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Versions: 00

opsawg                                                      SZ. Sun, Ed.
Internet-Draft                                               HD. He, Ed.
Intended status: Informational                              LX. Luo, Ed.
Expires: December 16, 2019                                CJF. Chen, Ed.
                                                             XR. Xu, Ed.
                                                                 CETC 30
                                                          WJL. Wang, Ed.
                                                          MCC. Miao, Ed.
                                                     Tsinghua University
                                                           June 14, 2019


          Framework for Network Resource Property Description
           draft-jilongwang-opsawg-cyber-resource-property-00

Abstract

   This memo discusses and defines a framework for cyberspace resource
   property description, which is suitable for the unified
   classification organization and description of multi-source network
   resource measurement information.  Now, there is no unified
   description framework for network resource property.  The objective
   of this draft is to establish a general model based on cyberspace
   identification reference, and implement the reuse of survey data in
   different users and occasions.  Then discuss the basic methodology
   and propose a less mature framework for further complement and
   improvement

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on December 16, 2019.







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Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology and Definition  . . . . . . . . . . . . . . . . .   4
     2.1.  Terminology and Definition  . . . . . . . . . . . . . . .   4
     2.2.  Property  . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.3.  Cyberspace Feature  . . . . . . . . . . . . . . . . . . .   5
   3.  Symbol and Abbreviation . . . . . . . . . . . . . . . . . . .   5
   4.  Use cases . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Intelligent semantic search . . . . . . . . . . . . . . .   6
     4.2.  Network security situational awareness  . . . . . . . . .   6
     4.3.  Network Security  . . . . . . . . . . . . . . . . . . . .   7
   5.  Methodology for Network Resources Attribute Description . . .   7
     5.1.  Basic Principles  . . . . . . . . . . . . . . . . . . . .   7
       5.1.1.  Scientific principle  . . . . . . . . . . . . . . . .   7
       5.1.2.  Systematic principle  . . . . . . . . . . . . . . . .   7
       5.1.3.  Consistency  principle  . . . . . . . . . . . . . . .   7
       5.1.4.  Scalability  principle  . . . . . . . . . . . . . . .   8
     5.2.  Attribute description framework . . . . . . . . . . . . .   8
     5.3.  Description of association rules for attributes
           description . . . . . . . . . . . . . . . . . . . . . . .   9
       5.3.1.  Alias relationship  . . . . . . . . . . . . . . . . .   9
       5.3.2.  Synonym  relationship . . . . . . . . . . . . . . . .   9
       5.3.3.  Ownership relationship  . . . . . . . . . . . . . . .   9
       5.3.4.  Aggregation relationship  . . . . . . . . . . . . . .  10
     5.4.  Meta property . . . . . . . . . . . . . . . . . . . . . .  10
       5.4.1.  Property type . . . . . . . . . . . . . . . . . . . .  10
       5.4.2.  Property hierarchy  . . . . . . . . . . . . . . . . .  10
       5.4.3.  Property range  . . . . . . . . . . . . . . . . . . .  10
       5.4.4.  Hash of property value  . . . . . . . . . . . . . . .  11
       5.4.5.  Property keyword  . . . . . . . . . . . . . . . . . .  11
       5.4.6.  Rate of property change . . . . . . . . . . . . . . .  11
       5.4.7.  Property dependency . . . . . . . . . . . . . . . . .  12



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   6.  Framework for Network Resources Attribute Description . . . .  12
     6.1.  Physical domain attributes  . . . . . . . . . . . . . . .  12
       6.1.1.  Basic attributes of the entity  . . . . . . . . . . .  12
       6.1.2.  Electrical attributes of the entity . . . . . . . . .  15
       6.1.3.  Environmental adaptation attributes of the entity . .  18
     6.2.  logical domain attributes . . . . . . . . . . . . . . . .  19
       6.2.1.  Basic attributes of network devices . . . . . . . . .  20
       6.2.2.  Attributes of network services  . . . . . . . . . . .  22
       6.2.3.  Attributes of network performance . . . . . . . . . .  25
       6.2.4.  Attributes of network topology  . . . . . . . . . . .  28
       6.2.5.  Attributes of network security  . . . . . . . . . . .  33
     6.3.  Cognitive domain attributes . . . . . . . . . . . . . . .  38
       6.3.1.  Cognitive domain attributes . . . . . . . . . . . . .  39
       6.3.2.  Basic attributes of the projected entity  . . . . . .  42
       6.3.3.  Behavioral attributes of the virtual subject  . . . .  45
       6.3.4.  Emotional attributes of the projected entity  . . . .  48
       6.3.5.  Conceptual attributes of the projected entity . . . .  51
       6.3.6.  Attributes of the web service content . . . . . . . .  53
       6.3.7.  Attributes of the data resource content . . . . . . .  55
     6.4.  social domain attributes  . . . . . . . . . . . . . . . .  59
       6.4.1.  Attributes of virtual crowd . . . . . . . . . . . . .  59
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  62
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  62
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  62
   10. Normative References  . . . . . . . . . . . . . . . . . . . .  62
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  63

1.  Introduction

   Network space measurement is based on certain methods, techniques and
   standards.  It uses software or hardware tools to test the
   composition, behavior and development of cyberspace by testing
   multiple indicators that characterize the state, property and
   relationships of various layers of cyberspace.  The range of
   measurement can be local to the network space or global.  The objects
   to be measured include the composition, structure, property,
   behavior, characteristics, laws and trends of the network space.  The
   information obtained by measurement is a kind of typical big data.
   The content is diverse in format, complex in structure and rapid in
   change.  It is difficult to understand, interact with, and
   disseminate the information.

   Given that network measurement data may be used by many people other
   than producers.  It is usually produced by an individual or
   organization and used by others or organizations.  Building a unified
   entity encoding rule enables people or organizations that are less
   familiar with each other to better share data and use the data
   appropriately.  As web measurement data producers and users process



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   more and more data, appropriate textual data can provide them with
   rich information about the data, enabling them to better manage,
   store, share, update and reuse data products.

   This memo can support the integration and management of surveying and
   mapping information across departments, cross-domains, time space,
   multi-source and multi-scale networks through the unified description
   of network space property.  It can be used as cyberspace management
   in the future.  It adopts a markup language RDF for describing
   network resource property, and focuses on the classification and
   coding rules of network measurement elements and their expansion
   methods.

2.  Terminology and Definition

2.1.  Terminology and Definition

   In this memo, individuals represent the objects of interest in the
   field of network mapping space, and OWL does not use the Unique Name
   Assumption.  It must clearly indicate whether individuals are
   identical, otherwise their relationship is unclear.

   Note: Individuals are sometimes referred to as Instances.

2.2.  Property

   Properties are binary relationships between individuals.  In the
   description logic, the concept of a Role is represented.  Properties
   can be divided into the following categories:

   Functional property

   Functional property can only be connected to one individual.

   Inverse Functional Property

   The inverse functional property is that for a given individual, only
   at most one individual can be connected through this property.  That
   is, the inverse property of this property is a functional property.

   Inverse Property

   The inverse property uses only one property name as a parameter,
   indicating the inversion of the relationship.

   Transitive Property

   Transitive property means that the property can be passed.



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   Object Property

   The Object property represents the relationship between instances of
   two classes.

   Datatype Property

   Connect individual and XML Schema data type values or RDF literals,
   Datatype property cannot be passed, symmetric, or inverse functional.

2.3.  Cyberspace Feature

   Cyberspace is a virtual and real space where human beings use
   information facilities to construct and realize the information
   interaction, and then influence human thoughts and behaviors.  It
   relies on the carrier of information and communication technology
   infrastructure carriers such as Internet, telecommunication networks,
   and various control systems and devices.

   In cyberspace, the use of cyberspace means to detect and perceive
   entities, including the Internet, telecommunications networks,
   industrial control networks and other types of network resources.
   Specifically, cyberspace resources include physical equipment such as
   network infrastructure and network access; information resources and
   network services such as audio, video, websites and text data;
   virtual characters, various IP-based telecommunication network
   equipment and industrial control systems, etc.

   The feature is an abstract representation of an entity.  Note:
   Features can appear as types or as instances.  When expressing only
   one meaning, you should use a feature type or a feature instance.A
   single cyberspace resource object existing in cyberspace is a
   specific unit of cyberspace resource feature, and it is also the
   smallest component of the corresponding feature types, and can be
   represented by specific symbols.

3.  Symbol and Abbreviation

   RDF: Resource Description Framework

   RDFS: Resource Description Framework Schema

   XML: Extensible Markup Language

   OWL: Ontology Web Language

   URI: Uniform Resource Identifier




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   DTD: Document Type Definition

   IDL: Interface Description Language

   OCL: Object Constraint Language

4.  Use cases

   The following sections highlight some of the most common framework
   for network resource property description use case scenarios and are
   in no way exhaustive.

4.1.  Intelligent semantic search

   The traditional search method mainly uses keyword matching to realize
   the retrieval of information.  Therefore, it is difficult for the
   user to simply use the keyword or keyword string to retrieve the
   content that he really needs, and the natural language changes with
   time, region or field.  The same concept can be expressed in
   different language expressions.  For the same concept retrieval,
   different users may use different keywords to query, resulting in a
   large amount of irrelevant information being returned to the user.

   Intelligent semantic search based on framework for network resource
   property description is an advanced form of information retrieval,
   which can provide users with search results in an accurate and
   concise natural language.  When the user initiates the query, the
   search engine will provides unique identities for each resource, map
   to parse and reason the keywords of the user query, and then map it
   to one or a set of concepts, and then according to the concept level
   in the framework.

4.2.  Network security situational awareness

   There are many elements involved in cyber security.  These elements
   often play a role in the attack threat.  According to the order of
   context, the layers are progressive, and finally reflect the macro
   network security situation.  The purpose of each element is
   different, and the network security situation process can be divided
   into several situational segments.  Various situational elements are
   extracted through network security events.

   Network security situational awareness based on framework for network
   resource property description can be regarded as a specific
   situational segment.  Through the structure of the security
   situational, the role of various situational elements is
   hierarchically displayed, enabling managers to grasp the current
   network security more deeply and accurately.



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4.3.  Network Security

   Network viruses and worms themselves are also a kind of network
   resources.  With the deepening of network opening and complexity,
   network viruses and worms are evolving constantly, and the
   characteristics of diversity and spatial discretization are
   increasing, resulting in a great hidden danger of network security.

   The framework for network resources categorization can locate the
   network resources more accurately and distinguish the benign or
   malignant network resources, study the process of virus evolution and
   the possible effects according to the attached attributes , and
   provide a clearer way to safeguard the operation of network space
   security, such as anti virus, antivirus and so on.

5.  Methodology for Network Resources Attribute Description

5.1.  Basic Principles

5.1.1.  Scientific principle

   The attribute description should conform to the basic organizational
   rules of cyberspace resource mapping information.  The selection of
   attribute classification perspective should meet the integration
   requirements of multi-source cyberspace resource mapping information,
   and fully take into account the traditional information
   classification system in various fields, thus covering network
   mapping information at various levels and fields.

5.1.2.  Systematic principle

   The methodology of Attribute description should be designed with good
   compatibility and can cover the requirements of the attribute
   representation of network measuring and mapping feature of different
   scales, different properties and different types.  The attribute
   categorization system should correctly reflect the measuring and
   mapping feature and the vertical and horizontal architecture
   attributes.  The level of information categorization and grading
   should be clear and reasonable.  The same perspective should be
   adopted for the categorization of objects at the same level.

5.1.3.  Consistency principle

   The design of attribute categorization and description should meet
   the uniqueness of the measuring and mapping feature attributes of
   cyberspace resources in the same mapping system, in which the values
   and units of the physical domain, logical domain and cognitive domain
   attributes of entities should be consistent with the national and



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   international standards in related fields.  When the scale of
   resources and attributes in cyberspace is modified and redirected,
   the description of resource attributes and the relationship between
   resources and attributes should be stable and semantically
   consistent.

5.1.4.  Scalability principle

   The attribute description, meta property description, resource-
   attribute relationship description and attribute-attribute
   relationship description of cyberspace resources are able to perfect
   and expand when facing the future development of cyberspace, multi-
   domain information integration and sharing, mapping of unknown
   resources and user requirements in different fields.

5.2.  Attribute description framework

   In this memo, the attributes of cyberspace resources are described by
   RDF resource description framework, and metadata is described as a
   data model through XML syntax and RDFS.  The basic RDF specification
   only defines the rules, and does not define the vocabularies for
   describing resources.  It should be refined for practical application
   in different fields.

   RDF uses Web identifiers (URI) to identify things, and attributes and
   attribute values to describe resources, allowing RDF to represent one
   or more simple statements about resources as a graph of nodes and
   arcs, where nodes represent resource and attribute values and arcs
   represent attributes.

   The RDF description for the cyberspace resource attribute consists of
   a file, resource description, and statement three-level structure,
   which is serialized by RDF/XML syntax.  A file can contain multiple
   resource descriptions, and a resource description can contain
   multiple statements, a statement can be expressed as a triplet
   composed of {subject, predicate, object} in natural language.  In the
   cyberspace resource and the attribute description, the cyberspace
   resource entity is corresponding to the subject in the triplet, the
   cyberspace attribute type is corresponding to the predicate in the
   triplet, and the attribute value is corresponding to the object in
   the triplet, which constitute the{cyberspace resource entity,
   cyberspace attribute type, attribute value} triplet can accurately
   and unambiguously record and describe all the information obtained
   during the measuring and mapping process.







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5.3.  Description of association rules for attributes description

   The association rules of attributes represent the internal relations
   between attributes, and the possible associations or relations
   between things can be found behind the data.  Unsupervised machine
   learning methods commonly found in data mining can be used for
   knowledge discovery and building knowledge maps.  In this memo,
   various attribute association operations are defined: alias
   relationship, synonym relationship, ownership relationship, and
   aggregation relationship.

5.3.1.  Alias relationship

   1) Relationship name: ch: Alias

   2) Relational meaning: representing different names of the same
   attribute

   3) Constraints: optional

   4) Range: no specific requirements

5.3.2.  Synonym relationship

   1) Relationship name: ch: Synonymy

   2) Relational meaning: representing the same meaning of multiple
   attributes

   3) Constraints: optional

   4) Range: no specific requirements

5.3.3.  Ownership relationship

   1) Relationship name: ch: Ownership

   2) Relational meaning: representing the inclusion relationship
   between attributes

   3) Constraints: optional

   4) Range: no specific requirements








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5.3.4.  Aggregation relationship

   1) Relationship name: ch: Aggregation

   2) Relational meaning: representing the clustering relationship of
   multiple attributes

   3) Constraints: optional

   4) Range: no specific requirements

5.4.  Meta property

   The meta property is defined as an attribute of a measuring and
   mapping data attribute, and is used to describe information such as a
   feature type, a domain, a range, a hierarchy, an aggregate, and a
   reference attribute.

5.4.1.  Property type

   1) Metaproperty name: meta_property: type

   2) Metaproperty meaning: Representing the category of an attribute

   3) Data type: STRING (XML Schema.  STRING)

   4) Constraints: mandatory

   5) Range: sub-classification results of attributes

5.4.2.  Property hierarchy

   1) Metaproperty name: meta_property: hierarchy

   2) Metaproperty meaning: Representing the hierarchy to which the
   attribute belongs

   3) Data type: STRING (XML Schema.  STRING)

   4) Constraints: mandatory

   5) Range: physics, logic, cognition and society

5.4.3.  Property range

   1) Metaproperty name: meta_property: range

   2) Metaproperty meaning: Representing the attribute value range



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   3) Data type: STRING (XML Schema.  STRING)

   4) Constraints: mandatory

   5) Range: depending on the value of the property

5.4.4.  Hash of property value

   1) Metaproperty name: meta_property: hash

   2) Metaproperty meaning: The hash of property

   3) Data type: INT (XMLSchema.INT)

   4) Constraints: mandatory

   5) Range: 8-bit hash

5.4.5.  Property keyword

   1) Metaproperty name: meta_property: keyword

   2) Metaproperty meaning: Keyword that represents the value of the
   property; if not, fill in null

   3) Data type: STRING (XML Schema.  STRING)

   4) Constraints: mandatory

   5) Range: no specific requirements

5.4.6.  Rate of property change

   1) Metaproperty name: meta_property: rate

   2) Metaproperty meaning: Representing the frequency of change of
   attributes

   3) Data type: STRING (XML Schema.  STRING)

   4) Constraints: mandatory

   5) Range: Static, slow change, fast change, change as needed








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5.4.7.  Property dependency

   1) Metaproperty name: meta_property: depend

   2) Metaproperty meaning: Representation attribute generation depends
   on additional attributes.

   3) Data type: STRING (XML Schema.  STRING)

   4) Constraints: optional

   5) Range: Other attribute name

6.  Framework for Network Resources Attribute Description

   According to the state, structure and behavior characteristics of
   resources at different levels in cyberspace, this memo divides the
   properties of resources in cyberspace into four categories, namely
   physical domain, logical domain, cognitive domain and social domain,
   which are respectively used to describe the explicit and partial
   implicit characteristics of resources at corresponding levels.  In
   addition to representing the properties of cyberspace resources, the
   memo also includes nine meta property, which represent the common
   features of attributes.  The attribute description specifies its
   meaning, data type, range of values, and so on as much as possible.

6.1.  Physical domain attributes

   The physical domain attribute represents a subset of features that
   can be observed, queried, recorded, and measured in the physical
   space and geospatial of each resource feature constituting the
   cyberspace.  Each attribute value is closely related to the objective
   existence of the corresponding resource feature in the physical
   world.  Resources are at a higher level, the material basis of
   services.  According to the attribute, the focus of the resource
   entity is reflected, and further subdivided into basic attributes,
   electrical attributes and security attributes..

6.1.1.  Basic attributes of the entity

   The basic attributes of the entity cover the general characteristics
   of the naming, identification, location, attribution, appearance,
   material, and price of the resource in the physical space.  Most of
   the basic attributes of resources of a single entity, once
   determined, change little during the run and can be considered a more
   stable base class feature.

   name



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   1) Attribute name: exns_property: phys_name

   2) Attribute meaning: the name of the entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Country

   1) Attribute name: exns_property: phys_country

   2) Attribute meaning: the country of the entity

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: meet the GB/T 2659-2000 standard specification

   Country Code

   1) Attribute name: exns_property: phys_countrycode

   2) Attribute meaning: country code of the entity

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: meet the GB/T 2659-2000 standard specification

   City

   1) Attribute name: exns_property: phys_city

   2) Attribute meaning: the city to which the entity belongs

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: meet the GB/T 2659-2000 standard specification

   Streets




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   1) Attribute name: exns_property: phys_street

   2) Attribute meaning: the street to which the entity belongs

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: meet the GB/T 2659-2000 standard specification

   Latitude

   1) Attribute name: exns_property: phys_latitude

   2) Attribute meaning: the geographic latitude of the entity

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: meet the GB/T 28589-2012 standard specification

   Longitude

   1) Attribute name: exns_property: phys_longitude

   2) Attribute meaning: the geographical longitude of the entity

   3) Data type: floating point number (XMLSchema.  FLOAT)

   4) Constraint: optional

   5) Range of values: meet the GB/T 28589-2012 standard specification

   Affiliation

   1) Attribute name: exns_property: phys_organization

   2) Attribute meaning: the Chinese name of the organization to which
   the entity belongs

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Manufacturer



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   1) Attribute name: exns_property: phys_manufacturer

   2) Attribute meaning: the manufacturer of the entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Model code

   1) Attribute name: exns_property: phys_entity_model

   2) Attribute meaning: the specific model code of the entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: required

   5) Range of values: no specific requirements

   Date of manufacture

   1) Attribute name: exns_property: phys_manufacturedata

   2) Attribute meaning: the date of production of the entity

   3) Data type: date type (XMLSchema.DATETIME)

   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification

6.1.2.  Electrical attributes of the entity

   The electrical attributes of the entity are used to describe the
   component characteristics, signal characteristics, electrical
   characteristics, connection characteristics, energy conversion
   characteristics, etc. necessary for the resource to support the
   operation of the network space.  These characteristics reflect and
   constrain the realization level of the function and performance of
   the resource entity at a higher level.

   Boot date

   1) Attribute name: exns_property: phys_startdate




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   2) Attribute meaning: the boot date of the entity

   3) Data type: date type (XMLSchema.DATETIME)

   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification

   Chip temperature

   1) Attribute name: exns_property: phys_chiptemperature

   2) Attribute meaning: physical sensor chip temperature

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Power consumption

   1) Attribute name: exns_property: phys_power

   2) Attribute meaning: average power consumption of physical work

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Input voltage

   1) Attribute name: exns_property: phys_inputvoltage

   2) Attribute meaning: physical input voltage

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   The output voltage

   1) Attribute name: exns_property: phys_outputvoltage




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   2) Attribute meaning: the output voltage of the entity

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Input Current

   1) Attribute name: exns_property: phys_inputcurrent

   2) Attribute meaning: physical input current

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Output current

   1) Attribute name: exns_property: phys_outputcurrent

   2) Attribute meaning: the output current of the entity

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Baud rate

   1) Attribute name: exns_property: phys_baudrate

   2) Attribute meaning: physical serial communication baud rate

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Firmware

   1) Attribute name: exns_property: phys_firmware




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   2) Attribute meaning: firmware version of the entity

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

6.1.3.  Environmental adaptation attributes of the entity

   The environmental adaptation attributes of the entity reflect the
   relevant characteristics of the entity itself to avoid the impact and
   destruction of the source from the physical world in anticipation and
   unanticipated circumstances, and to avoid the disruption of the
   integrity and availability of its functions within certain limits,
   and reflects the self-protection ability of the entity in the
   physical world.

   Stability

   1) Attribute name: exns_property: phys_safe_stability

   2) Attribute meaning: characterize the stability of the entity in the
   physical domain

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Heat resistance

   1) Attribute name: exns_property: phys_ safe_heatresistance

   2) Attribute meaning: characterize the heat resistance of the entity
   in the physical domain, the highest temperature at which the entity
   works normally.

   3) Data type: floating point number (XMLSchema.  FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   High frequency oscillation

   1) Attribute name: exns_property: phys_ safe_oscillationresistance



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   2) Attribute meaning: characterize the highest oscillation frequency
   that the entity can withstand

   3) Data type: floating point number (XMLSchema.  FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Resistance to surge

   1) Attribute name: exns_property: phys_ safe_surgeresistance

   2) Attribute meaning: characterizing the immunity of the entity in
   the physical domain

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Corrosion resistance

   1) Attribute name: exns_property: phys_ safe_corrosionistance

   2) Attribute meaning: characterize the corrosion resistance of the
   entity in the physical domain

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

6.2.  logical domain attributes

   The logical attributes describe the characteristics inherent,
   endowed, maintained or changed in the process of the generation,
   transmission, storage, exchange, use and clearing of the data and
   information of the various resource features constituting the
   cyberspace.  Including the basic attributes of network equipment,
   network service attributes, network performance attributes, network
   topology attributes and network security attributes.







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6.2.1.  Basic attributes of network devices

   The basic attributes of network devices are the basic characteristics
   of the naming, address, structure and composition of resource
   entities in cyberspace, which are used to realize the ability of
   identification, query and communication, etc., and are generally
   shared by all network devices.

   MAC address

   1) Attribute name: exns_property: logi_mac

   2) Attribute meaning: MAC address of the network device

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: required

   5) Range of values: conforms to the unified mac address format
   provided by TCP/IP protocol

   IP address

   1) Attribute name: exns_property: logi_ip

   2) Attribute meaning: IP address of the network device

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: required

   5) Range of values: in accordance with IP address notation

   Subnet mask

   1) Attribute name: exns_property: logi_mask

   2) Attribute meaning: subnet mask of the network device

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: required

   5) Range of values: conforms to the subnet mask representation
   specification

   Gateway address




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   1) Attribute name: exns_property: logi_gateway

   2) Attribute meaning: gateway address of the network device

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: required

   5) Range of values: in accordance with IP address notation

   DNS address

   1) Attribute name: exns_property: logi_dns

   2) Attribute meaning: domain name server address of the network
   device

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: required

   5) Range of values: in accordance with IP address notation

   DHCP address

   1) Attribute name: exns_property: logi_dhcp

   2) Attribute meaning: Dynamic allocation of IP server address of
   network device

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: in accordance with IP address notation

   host name

   1) Attribute name: exns_property: logi_hostname

   2) Attribute meaning: host name of the network device

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements




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   domain name

   1) Attribute name: exns_property: logi_domain

   2) Attribute meaning: the name of the domain to which the network
   device belongs

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

6.2.2.  Attributes of network services

   The attributes of network services are used to describe the
   mechanism, mode, scope, condition and other characteristics of the
   interaction between entity resources and other entities in the
   network, including but not limited to the processes of establishing
   connections, providing data, obtaining data, and transferring data.

   Data Format

   1) Attribute name: exns_property: logi_datatype

   2) Attribute meaning: end-to-end data format

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Projection entity

   1) Attribute name: exns_property: logi_projectiveentity

   2) Attribute meaning: network equipment providing network services

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Service type

   1) Attribute name: exns_property: logi_servicetype



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   2) Attribute meaning: the protocol type of the network service, for
   example: ftp, http, https, etc.

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Known port

   1) Attribute name: exns_property: logi_port _wellknow

   2) Attribute meaning: a recognized port open to the network device

   3) Data type: integer array (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: range from 0 to 1023

   Registered port

   1) Attribute name: exns_property: logi_port_registered

   2) Attribute meaning: the registered port of the network device is
   open to the outside world.

   3) Data type: integer array (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: range from 1024 to 49151

   Dynamic port

   1) Attribute name: exns_property: logi_port _dynamic

   2) Attribute meaning: dynamic port open to network devices

   3) Data type: integer array (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: ranging from 49152 to 65535

   Port banner information




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   1) Attribute name: exns_property: logi_port_banner

   2) Attribute meaning: banner information that the network device is
   open to the outside world

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Port rate

   1) Attribute name: exns_property: logi_port_rate

   2) Attribute meaning: real-time rate of network device open port

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: rate statistics should be greater than zero,
   generally in MB/S units

   Port throughput

   1) Attribute name: exns_property: logi_port_ flux

   2) Attribute meaning: traffic statistics of network device open ports

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: Traffic statistics should be greater than zero,
   generally in MB units

   Port transfer protocol

   1) Attribute name: exns_property: logi_port_transportprotocol

   2) Attribute meaning: the transmission protocol of the open port of
   the network device, for example: udp, tcp, etc.

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional




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   5) Range of values: no specific requirements

   Service address

   1) Attribute name: exns_property: logi_url

   2) Attribute meaning: the access address provided by the network
   service

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

6.2.3.  Attributes of network performance

   The attributes of network performance are used to describe the
   different characteristics of capacity, efficiency and ability of
   resource entities to perform various logical domain network
   operations and activities, which can indirectly reflect the value and
   importance of resources in cyberspace.

   Backplane bandwidth

   1) Attribute name: exns_property: logi_backplane_bandwidth

   2) Attribute meaning: backplane bandwidth of the network device

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Packet forwarding rate

   1) Attribute name: exns_property: logi_forwarding_rate

   2) Attribute meaning: packet forwarding rate of network devices

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Forwarding delay



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   1) Attribute name: exns_property: logi_forwarding_delay

   2) Attribute meaning: forwarding delay of network equipment

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero

   QoS packet forwarding rate

   1) Attribute name: exns_property: logi_qosforwarding_rate

   2) Attribute meaning: qos packet forwarding rate of network devices

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Packet loss rate

   1) Attribute name: exns_property: logi_packet_ loss

   2) Attribute meaning: packet loss rate of network devices

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: percentage

   Throughput

   1) Attribute name: exns_property: logi_throughput

   2) Attribute meaning: throughput of network equipment

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Maximum bandwidth




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   1) Attribute name: exns_property: logi_max_bandwidth

   2) Attribute meaning: the maximum bandwidth of the network device

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Maximum number of connections

   1) Attribute name: exns_property: logi_max_link

   2) Attribute meaning: the maximum number of connections of the
   network device

   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Link rate

   1) Attribute name: exns_property: logi_link_rate

   2) Attribute meaning: the amount of information transmitted on the
   link per unit time

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Transmission delay

   1) Attribute name: exns_property: logi_transmission_delay

   2) Attribute meaning: transmission delay of network equipment

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: greater than zero




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   Operating mode

   1) Attribute name: exns_property: logi_working_mode

   2) Attribute meaning: working mode of network equipment

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: full or half duplex

6.2.4.  Attributes of network topology

   The attributes of network topology are used to describe self-formed,
   human-made or on-demand configured topology features consisting of
   multiple resource entities and links containing a certain structure.
   Such attributes usually reflect the state, development and law of the
   static and dynamic structure of corresponding cyberspace resources.

   Autonomous domain name

   1) Attribute name: exns_property: logi_as_name

   2) Attribute meaning: the naming of the autonomous domain of the
   entity

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: global autonomous domain

   Autonomous domain number

   1) Attribute name: exns_property: logi_asn

   2) Attribute meaning: the autonomous system asn number of the entity

   3) Data type: number (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: Global Autonomous System ASN numbering table

   Autonomous domain type

   1) Attribute name: exns_property: logi_asn_type



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   2) Attribute meaning: the AS type of the autonomous system to which
   the entity belongs

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: type of autonomous domain

   ISP

   1) Attribute name: exns_property: isp

   2) Attribute meaning: entity's Internet service provider

   3) Data type: string (XMLSchema.STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Route prefix

   1) Attribute name: exns_property: logi_routedprefix

   2) Attribute meaning: the route prefix of the entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: Specification format conforming to IP plus mask

   Router level

   1) Attribute name: exns_property: logi_router_level

   2) Attribute meaning: The level of the router in the network, for
   example: access level, aggregation level, backbone level, and so on.

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Number of network nodes




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   1) Attribute name: exns_property: logi_nodenumber

   2) Attribute meaning: the number of nodes in the entity's network

   3) Data type: integer (XMLSchema.  INT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Number of network sides

   1) Attribute name: exns_property: logi_edgenumber

   2) Attribute meaning: the number of connected sides in the entity's
   network

   3) Data type: integer (XMLSchema.  INT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Center degree

   1) Attribute name: exns_property: logi_ centerdegree

   2) Attribute meaning: the central degree of the network segment

   3) Data type: integer (XMLSchema.  INT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Node degree

   1) Attribute name: exns_property: logi_nodedegree

   2) Attribute meaning: the node degree of the network segment

   3) Data type: integer (XMLSchema.  INT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   AS boundary



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   1) Attribute name: exns_property: logi_as_edge

   2) Attribute meaning: whether the router is an as border router

   3) Data type: Boolean (XMLSchema.BOOLEAN)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Country gateway

   1) Attribute name: exns_property: logi_ nationalgateway

   2) Attribute meaning: whether the network device is a country gateway

   3) Data type: Boolean (XMLSchema.BOOLEAN)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Segment address

   1) Attribute name: exns_property: logi_ segment_address

   2) Attribute meaning: address information of the network segment

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Segment mask

   1) Attribute name: exns_property: logi_ segment _mask

   2) Attribute meaning: mask information of the network segment

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Network segment router number




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   1) Attribute name: exns_property: logi_ segment_router

   2) Attribute meaning: router number information of the network
   segment

   3) Data type: integer (XMLSchema.  INT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Network segment IP number

   1) Attribute name: exns_property: logi_ segment _num

   2) Attribute meaning: the number of IP addresses contained in the
   network segment

   3) Data type: integer (XMLSchema.  INT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Neighbor network segment

   1) Attribute name: exns_property: logi_ segment _ neighbor

   2) Attribute meaning: whether the router is an anonymous router

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Topology

   1) Attribute name: exns_property: logi_ topological

   2) Attribute meaning: network topology

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: bus type, ring, star type




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6.2.5.  Attributes of network security

   The attributes of network security reflect the ability of entity
   itself to the expected and unexpected response to information from
   the data under the condition of operation, the influence of the
   exchange and transfer the source and damage, in a certain limits to
   avoid its function of integrity, and availability is damaged, or
   their own responsible for generation and transmission or processing
   the confidentiality, integrity and availability of information
   related to the characteristics of the damage.  These attributes
   represent the self-protection and information protection capabilities
   of entities in the logical domain of cyberspace.

   Encryption Algorithm

   1) Attribute name: exns_property: logi_ safe_ encryptionalgorithm

   2) Attribute meaning: encryption algorithm for data transmission

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: AES, DES, RSA

   Key length

   1) Attribute name: exns_property: logi_ safe_ keylength

   2) Attribute meaning: key length of the encryption algorithm

   3) Data type: integer (XMLSchema.  INT)

   4) Constraint: optional

   5) Range of values: 64, 128, 256

   Key replacement time

   1) Attribute name: exns_property: logi_ safe_ keychangetime

   2) Attribute meaning: key replacement time

   3) Data type: date type (XMLSchema.DATETIME)

   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification



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   Key distribution mechanism

   1) Attribute name: exns_property: logi_ safe_ keydistribution

   2) Attribute meaning: key replacement time

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Authentication method

   1) Attribute name: exns_property: logi_ safe_ authenticationmethod

   2) Attribute meaning: the identity authentication method adopted by
   the security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: one-way, two-way

   Authentication mechanism

   1) Attribute name: exns_property: logi_ safe_ authenticationmechanism

   2) Attribute meaning: the identity authentication mechanism adopted
   by the security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: password, certificate, bio, hybrid

   Authentication requirements

   1) Attribute name: exns_property: logi_ safe_ authenticationrequire

   2) Attribute meaning: identity authentication requirements adopted by
   the security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional



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   5) Range of values: USBKey, digital certificate, trusted module

   Certificate type

   1) Attribute name: exns_property: logi_ safe_certificatetype

   2) Attribute meaning: the type of identity authentication certificate
   adopted by the security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: X.509, LDAP

   Access control type

   1) Attribute name: exns_property: logi_ safe_ accesscontroltype

   2) Attribute meaning: the type of access control adopted by the
   security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: MAC, DAC, RBAC, ABAC, IBAC

   Security policy level

   1) Attribute name: exns_property: logi_ safe_ policylevel

   2) Attribute meaning: the policy level adopted by the security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: high, medium and low

   Patch update time

   1) Attribute name: exns_property: logi_ safe_ patchupdatetime

   2) Attribute meaning: system patch update time

   3) Data type: date type (XMLSchema.DATETIME)




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   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification

   Patch installation

   1) Attribute name: exns_property: logi_ safe_ patchinfo

   2) Attribute meaning: system patch installation patch, including
   installed patches and no patches installed

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Patch source address

   1) Attribute name: exns_property: logi_ safe_ patchaddr

   2) Attribute meaning: the address of the system patch download

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Patch update mechanism

   1) Attribute name: exns_property: logi_ safe_ patchmethod

   2) Attribute meaning: the way the system patch is updated

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: subscription, push, offline

   Firewall type

   1) Attribute name: exns_property: logi_ safe_ firewalltype

   2) Attribute meaning: the way the system patch is updated

   3) Data type: string (XMLSchema.  STRING)



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   4) Constraint: optional

   5) Range of values: operating system comes with, host firewall, no
   firewall

   Intrusion detection type

   1) Attribute name: exns_property: logi_ safe_idstype

   2) Attribute meaning: type of intrusion detection adopted by the
   security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: None, HIDS, NIDS, IPS

   Host monitoring type

   1) Attribute name: exns_property: logi_ safe_ monitortype

   2) Attribute meaning: Host monitoring type adopted by the security
   system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: None, Behavior, Network, All

   Security audit mechanism

   1) Attribute name: exns_property: logi_ safe_ audittype

   2) Attribute meaning: the type of security audit adopted by the
   security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: None, traffic, protocol, behavior

   Security management port

   1) Attribute name: exns_property: logi_ safe_ adminport




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   2) Attribute meaning: the management interface provided by the
   security system

   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: 0-65535

   Security management method

   1) Attribute name: exns_property: logi_ safe_ admintype

   2) Attribute meaning: the security management organization or company
   adopted by the security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Security management mechanism

   1) Attribute name: exns_property: logi_ safe_ adminmethod

   2) Attribute meaning: the security management mechanism adopted by
   the security system

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: peer, cascade, autonomous

6.3.  Cognitive domain attributes

   The subject attributes in the cognitive domain are quite different
   from the physical domain and the logical domain, mainly reflecting
   the knowledge, thoughts, emotions and beliefs acquired, exchanged and
   formed by the projected entities in cyberspace in the form of virtual
   subjects in the cognitive domain.  Due to the use of the diversity of
   the subject and the object information semantic complexity greatly
   deepened, and the related attributes with more categories, mainly
   includes the basic attributes of the virtual subject, the basic
   attributes of the projected entity, the behavioral attributes of the
   virtual subject, and the projection.  The emotional attributes of the
   projected entity, the conceptual attributes of the projected entity,



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   the attributes of the web service content, and the attributes of the
   data resource content, etc.

6.3.1.  Cognitive domain attributes

   The basic attributes of the virtual subject are used to describe the
   effective and meaningful assets, status and activity information of
   the virtual subject only in the cyberspace category.  This
   information is stored and maintained by various network services, and
   thus has the characteristics of volatility and variability.

   Virtual principal account

   1) Attribute name: exns_property: cogi_virtualsubject_id

   2) Attribute meaning: virtual subject account

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: required

   5) Range of values: no specific requirements

   Virtual principal password

   1) Attribute name: exns_property: cogi_virtualsubject_password

   2) Attribute meaning: the password of the virtual subject's account

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual subject location

   1) Attribute name: exns_property: cogi_virtualsubject_place

   2) Attribute meaning: the login location of the virtual subject

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: meet the GB/T 2659-2000 standard specification

   Virtual body login time



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   1) Attribute name: exns_property: cogi_virtualsubject_date

   2) Attribute meaning: login time of virtual subject

   3) Data type: date type (XMLSchema.DATETIME)

   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification

   Virtual subject online time

   1) Attribute name: exns_property: cogi_virtualsubject_onelinetime

   2) Attribute meaning: online time of virtual subject

   3) Data type: date type (XMLSchema.DATETIME)

   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification

   Virtual subject registration time

   1) Attribute name: exns_property: cogi_virtualsubject_registeddate

   2) Attribute meaning: registration time of virtual subject

   3) Data type: date type (XMLSchema.DATETIME)

   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification

   Virtual principal name

   1) Attribute name: exns_property: cogi_virtualsubject_name

   2) Attribute meaning: the name of the virtual subject

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual body type




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   1) Attribute name: exns_property: cogi_virtualsubject_type

   2) Attribute meaning: type of virtual subject

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual subject role

   1) Attribute name: exns_property: virtualsubject_function

   2) Attribute meaning: virtual subject works in virtual group

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual subject activity

   1) Attribute name: exns_property: cogi_virtualsubject_activity

   2) Attribute meaning: the activity of the virtual subject in the
   virtual group

   3) Data type: floating point type (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual principal platform

   1) Attribute name: exns_property: cogi_virtualsubject_platform

   2) Attribute meaning: the platform where the virtual subject is
   located

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements




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6.3.2.  Basic attributes of the projected entity

   The basic attributes of the projected entity are used to characterize
   the various characteristics of natural persons that exist in the
   physical world that participate in the activities of cyberspace, use
   the services of cyberspace, and manage the states of cyberspace.  The
   basic attributes of the projected entity can guide and regulate the
   basic attributes of related virtual subjects.

   The name of the projection entity

   1) Attribute name: exns_property: cogi_mappingentity_name

   2) Attribute meaning: the name of the projection entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Projecting entity gender

   1) Attribute name: exns_property: cogi_mappingentity_sex

   2) Attribute meaning: the gender of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: male/female

   Projection entity's ID number

   1) Attribute name: exns_property: cogi_mappingentity_id

   2) Attribute meaning: the document number of the projection entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: Code number specification for nationality

   Projection entity occupation

   1) Attribute name: exns_property: cogi_mappingentity_profession



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   2) Attribute meaning: the occupation of the projection entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   The social level of the projected entity

   1) Attribute name: exns_property: cogi_mappingentity_sociallevel

   2) Attribute meaning: the social level of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: medium, low, high level

   The age of the projected entity

   1) Attribute name: exns_property: cogi_mappingentity_age

   2) Attribute meaning: age of the projection entity

   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Nationality of the projected entity

   1) Attribute name: exns_property: cogi_mappingentity_nationality

   2) Attribute meaning: nationality of the projection entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: meet the GB/T 2659-2000 standard specification

   The language of the projected entity

   1) Attribute name: exns_property: cogi_mappingentity_language




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   2) Attribute meaning: common language of the projection entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Projecting entity accent

   1) Attribute name: exns_property: mappingentity_accent

   2) Attribute meaning: accent of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Projecting the skin's skin tone

   1) Attribute name: exns_property: cogi_mappingentity_ colour

   2) Attribute meaning: the skin color of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Projected entity

   1) Attribute name: exns_property: cogi_mappingentity_ posture

   2) Attribute meaning: the body state of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   The health of the projected entity

   1) Attribute name: exns_property: cogi_mappingentity_ health




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   2) Attribute meaning: the health of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: excellent / good / poor

   Projecting entity intelligence

   1) Attribute name: exns_property: cogi_mappingentity_ intelligence

   2) Attribute meaning: the intelligence level of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: excellent / good / poor

6.3.3.  Behavioral attributes of the virtual subject

   The behavioral attributes of the virtual subject are used to describe
   the behavioral choices, behavioral rules, behavioral effects and
   other characteristics of the virtual subject when it participates in
   various activities in the cyberspace, and represent the trajectory
   and influence of the virtual subject in the cyberspace.

   Virtual subject access preferences

   1) Attribute name: exns_property: cogi_mappingentity_preference

   2) Attribute meaning: a frequently visited URL that characterizes a
   virtual subject

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: URL

   Total number of tweets for virtual subjects

   1) Attribute name: exns_property: cogi_mappingentity_blog_num

   2) Attribute meaning: total number of tweets that represent virtual
   subjects




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   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Original tweet proportion of virtual subject

   1) Attribute name: exns_property: cogi_mappingentity_blog_original

   2) Attribute meaning: the proportion of original tweets that
   characterize the virtual subject

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: percentage

   Number of concerns of the virtual subject

   1) Attribute name: exns_property: cogi_mappingentity_blog_concerns

   2) Attribute meaning: the number of concerns that characterize the
   essay of the virtual subject

   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Number of fans of virtual subjects

   1) Attribute name: exns_property: cogi_mappingentity_blog_fans

   2) Attribute meaning: the number of fans who represent the virtual
   subject

   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Topic engagement of virtual subjects





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   1) Attribute name: exns_property:
   cogi_mappingentity_blog_participation

   2) Attribute meaning: characterizing the topic participation of the
   virtual subject

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: strong, general, indifferent

   Text usage preferences of virtual subjects

   1) Attribute name: exns_property: cogi_mappingentity_text_preference

   2) Attribute meaning: characterizing the text usage preferences of
   the virtual subject

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: URL

   Average dynamic number of virtual subjects

   1) Attribute name: exns_property: cogi_mappingentity_dynamic_num

   2) Attribute meaning: the average dynamic number of the virtual
   subject

   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: greater than zero

   Number of comments by virtual subject

   1) Attribute name: exns_property: cogi_mappingentity_blog_comment

   2) Attribute meaning: the number of Weibo comments that represent the
   virtual subject

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional



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   5) Range of values: URL

   The tweet of the virtual subject

   1) Attribute name: exns_property: cogi_mappingentity_blog_ praisenum

   2) Attribute meaning: the microblogging point number that represents
   the virtual subject

   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: greater than zero

   The number of tweets forwarded by the virtual principal

   1) Attribute name: exns_property: cogi_mappingentity_blog_forwardnum

   2) Attribute meaning: the number of tweets forwarded to the virtual
   subject

   3) Data type: integer (XMLSchema.INT)

   4) Constraint: optional

   5) Range of values: greater than zero

6.3.4.  Emotional attributes of the projected entity

   The emotional attributes of the projected entity are used to
   characterize the long-term, relatively stable inner emotional
   tendency and temperament characteristics of the projected entity
   formed in the growth and living environment, which can directly and
   indirectly affect the concept, view, thought and behavior of the
   projected entity in the cyberspace.  The difference between emotional
   attributes and conceptual attributes is that emotional attributes are
   often contained by themselves, from the outside to the inside, while
   conceptual attributes are summarized from the inside to the outside
   for the characteristics of objects and objects.

   Reflexive spirit of the projection entity

   1) Attribute name: exns_property: cogi_mappingentity_spirit

   2) Attribute meaning: the degree of rebellious spirit of the
   projected entity




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   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: strong, general, weak

   Projection entity happiness

   1) Attribute name: exns_property: cogi_mappingentity_ happiness

   2) Attribute meaning: the degree of characterization of the happiness
   of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: strong, general, unhappy

   Projection entity pride

   1) Attribute name: exns_property: cogi_mappingentity_ride

   2) Attribute meaning: the degree of characterization of the happiness
   of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: strong, general, inferior

   Projection entity security

   1) Attribute name: exns_property: cogi_mappingentity_ safty

   2) Attribute meaning: the degree of security of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: strong, general, insecure

   Projection entity

   1) Attribute name: exns_property: cogi_mappingentity_ belonging




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   2) Attribute meaning: the degree of attribution of the sense of
   belonging of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: strong, general, no sense of belonging

   Projection entity's sense of humor

   1) Attribute name: exns_property: cogi_mappingentity_ humor

   2) Attribute meaning: the degree of humor that characterizes the
   projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: humor, general, old-fashioned

   Projection entity's internal and external directions

   1) Attribute name: exns_property: cogi_mappingentity_ internal

   2) Attribute meaning: the degree of internal and external
   characterization of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: introverted, general, outgoing

   Projection entity's self-esteem

   1) Attribute name: exns_property: cogi_mappingentity_ selfrespect

   2) Attribute meaning: the degree of self-esteem of the projected
   entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: strong, general, no self-esteem




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   Projection entity self-confidence

   1) Attribute name: exns_property: cogi_mappingentity_ selfconfidence

   2) Attribute meaning: the degree of self-confidence that
   characterizes the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: strong, general, no confidence

6.3.5.  Conceptual attributes of the projected entity

   The conceptual attribute of the projected entity is used to describe
   the tensional views, opinions and choices of the projected entity for
   various objects, relationships, phenomena and laws in the real world,
   the virtual world and the spiritual world, which are the
   psychological basis for virtual subjects to carry out various
   activities in cyberspace.  The difference between the conceptual
   attribute and the affective attribute is that the conceptual
   attribute must contain one or more object objects, which are
   concluded from the inner to the outer features, while the affective
   attribute is usually independent of the object objects, while the
   projected entity itself contains the mental state from the outer to
   the inner.

   Projection entity patriotism

   1) Attribute name: exns_property: cogi_mappingentity_patriotism

   2) Attribute meaning: the degree of love of the motherland that
   represents the projection entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: fanaticism, affection, generality, indifference,
   disgust

   The political claim of the projection entity

   1) Attribute name: exns_property: cogi_mappingentity_ political

   2) Attribute meaning: the political claim of the projection entity




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   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   The ideology orientation of the projection entity

   1) Attribute name: exns_property: cogi_mappingentity_ ideology

   2) Attribute meaning: the ideology of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Party orientation of the projection entity

   1) Attribute name: exns_property: cogi_mappingentity_ party

   2) Attribute meaning: the party in which the projection entity
   participates

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Social group orientation of projection entities

   1) Attribute name: exns_property: cogi_mappingentity_ group

   2) Attribute meaning: social groups in which the projection entity
   participates

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Projection entity belief

   1) Attribute name: exns_property: cogi_mappingentity_ belief




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   2) Attribute meaning: the belief of the projection entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Projection entity values

   1) Attribute name: exns_property: cogi_mappingentity_ values

   2) Attribute meaning: the belief of the projection entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Projection entity's outlook on life

   1) Attribute name: exns_property: cogi_mappingentity_ life

   2) Attribute meaning: the outlook of life of the projected entity

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

6.3.6.  Attributes of the web service content

   The attributes of the web service content are used to characterize
   the types, scopes, capabilities, mechanisms of resource entities to
   generate, receive, accommodate, transmit and provide information
   content at the cognitive level.  As the carrier of the data resource,
   the attributes of the network service content determine the basic
   information of relevant forms, structures, uses and virtual subjects
   of the data resources on it.

   The name of the service content

   1) Attribute name: exns_property: cogi_networkservice_ name

   2) Attribute meaning: the name of the external service provided by
   the network service



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   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Service content function

   1) Attribute name: exns_property: cogi_networkservice_function

   2) Attribute meaning: external service function of network service

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Audience of service content

   1) Attribute name: exns_property: cogi_networkservice_ audience

   2) Attribute meaning: the audience of the external service provided
   by the network service

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Publisher of service content

   1) Attribute name: exns_property: cogi_networkservice_ publisher

   2) Attribute meaning: the publisher of the external service of the
   network service

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Editor of the service content

   1) Attribute name: exns_property: cogi_networkservice_ editor




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   2) Attribute meaning: the editor of the external service of the
   network service

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Form of service content

   1) Attribute name: exns_property: cogi_networkservice_ type

   2) Attribute meaning: the form of external service provided by
   network service

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Service content release time

   1) Attribute name: exns_property: cogi_networkservice_ date

   2) Attribute meaning: the release time of the content of the network
   service

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification

6.3.7.  Attributes of the data resource content

   The attributes of the data resource content are used to characterize
   the various characteristics that the data resource can be recognized
   by other projected entities at the content level.  It can be used to
   establish a wide range of correlations between content and content,
   between content and resources, and between content and projected
   entities/virtual subjects.

   Content publisher

   1) Attribute name: exns_property: cogi_content_ publisher




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   2) Attribute meaning: the content of the cloth

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Speed of content

   1) Attribute name: exns_property: cogi_content_ speed

   2) Attribute meaning: the speed of content propagation

   3) Data type: floating point number (XMLSchema.FLOAT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Emotional color of content

   1) Attribute name: exns_property: cogi_content_ emotion

   2) Attribute meaning: the emotional color conveyed by the content

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Content impact

   1) Attribute name: exns_property: cogi_content_ effect

   2) Attribute meaning: the social influence brought by the content

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Content evaluation

   1) Attribute name: exns_property: cogi_content_ evaluate




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   2) Attribute meaning: evaluation of content

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Content operation form

   1) Attribute name: exns_property: cogi_content_ form

   2) Attribute meaning: the operating form of the content

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Legality of content

   1) Attribute name: exns_property: cogi_content_ legality

   2) Attribute meaning: whether the content complies with relevant laws
   and regulations

   3) Data type: Boolean (XMLSchema.  BOOLEN)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Value orientation of content

   1) Attribute name: exns_property: cogi_content_ value

   2) Attribute meaning: content value orientation

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Content ethics

   1) Attribute name: exns_property: cogi_content_ ethics



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   2) Attribute meaning: the ethical influence of content

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Field of content

   1) Attribute name: exns_property: cogi_content_ domain

   2) Attribute meaning: the domain of the content

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Political color of content

   1) Attribute name: exns_property: cogi_content_ political

   2) Attribute meaning: the political color of content

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Ideology of content

   1) Attribute name: exns_property: cogi_content_ ideology

   2) Attribute meaning: the ideology of content reaction

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Authenticity of content

   1) Attribute name: exns_property: cogi_content_ truth




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   2) Attribute meaning: the authenticity of the content

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

6.4.  social domain attributes

   The social domain attribute is used to describe various social groups
   (especially virtual crowd) with strong sociality in the cyberspace,
   and to describe the new features that emerge after multiple virtual
   subjects gather into groups due to internal factors such as emotions
   and concepts, or external factors such as events and pressures.

6.4.1.  Attributes of virtual crowd

   The virtual crowd refers to a new type of organization with the same
   interest and similar ideas formed by the virtual network as the
   medium and relying on the network social media.  It consists of two
   layers: one is the networking of the realistic group, which is the
   extension of the realistic group in the cyberspace; the second is the
   group born based on the network, that is, the group bound by and
   because of the network.

   Organization name of the virtual crowd

   1) Attribute name: exns_property: soci_virtualcrowd_ name

   2) Attribute meaning: the organization name of the virtual crowd

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Common interest of the virtual crowd

   1) Attribute name: exns_property: soci_virtualcrowd _ support

   2) Attribute meaning: the common interest of the virtual crowd, the
   source of formation

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional



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   5) Range of values: no specific requirements

   Virtual crowd ID

   1) Attribute name: exns_property: soci_virtualcrowd _ id

   2) Attribute meaning: the unique ID of the virtual crowd in
   cyberspace

   3) Data type: integer (XMLSchema.  INT)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual crowd gathering place

   1) Attribute name: exns_property: soci_virtualcrowd _ place

   2) Attribute meaning: virtual crowd in the network gathering place,
   WeChat group / Weibo / forum / chat room / live room

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual population connection strength

   1) Attribute name: exns_property: soci_virtualcrowd _ link

   2) Attribute meaning: the strength of the connection of the virtual
   crowd

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: compact, general, loose

   Opinion leader of the virtual crowd

   1) Attribute name: exns_property: soci_virtualcrowd _ leader

   2) Attribute meaning: the leader of group thinking, behavior or
   speech




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   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Secondary leader of the virtual crowd

   1) Attribute name: exns_property: soci_virtualcrowd _ subleader

   2) Attribute meaning: the second-level leader of group thinking,
   behavior or speech

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Active time of the virtual crowd

   1) Attribute name: exns_property: soci_virtualcrowd _ activetime

   2) Attribute meaning: the usual time for group status update

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: meet the GB/T 7408-1994 standard specification

   Offline activities of virtual people

   1) Attribute name: exns_property: soci_virtualcrowd _ Offline

   2) Attribute meaning: whether offline activities

   3) Data type: Boolean (XMLSchema.  BOOLEN)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual population mobility

   1) Attribute name: exns_property: soci_virtualcrowd _ mobility





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   2) Attribute meaning: stability of group members, strong, medium and
   weak

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

   Virtual population vulnerability

   1) Attribute name: exns_property: soci_ virtualcrowd _ vulnerability

   2) Attribute meaning: the group members' thoughts are shaken, strong,
   medium and weak

   3) Data type: string (XMLSchema.  STRING)

   4) Constraint: optional

   5) Range of values: no specific requirements

7.  Acknowledgements

   With gratitude, the authors would like to thank the support,
   encouragement, and help of China Electronic Technology Group
   Corporation thirtieth Research institute and Tsinghua.University.
   And we thanks to the following persons: Jilong Wang, Congcong Miao,
   Yujin Zhou,Jiang Zhang, Hui Yang, devoted their hardworking and
   effort.

8.  IANA Considerations

   This memo includes no request to IANA.

9.  Security Considerations

   This document only defines a framework for network resource property
   description.  This document itself does not directly introduce
   security issues.

10.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", RFC 2119, March 1997.

   [RFC3275]  Eastlake 3rd, D., "Extensible Markup Language) XML-
              Signature Syntax and Processing", RFC 3275, March 2002.



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   [RFC3688]  Mealling, M., "The IETF XML Registry", RFC 3688, January
              2004.

   [RFC3870]  Swartz, A., "Application/rdf+xml Media Type Registration",
              RFC 3870, September 2004.

Authors' Addresses

   Zhi Sun (editor)
   CETC 30
   Chengdu  610000
   China

   Email: sunzhi1019@163.com


   Da He (editor)
   CETC 30
   Chengdu  610000
   China

   Email: edawrdheda@outlook.com


   Xian Luo (editor)
   CETC 30
   Chengdu  610000
   China

   Email: luoxian@cetcsc.com


   Jianfeng Chen (editor)
   CETC 30
   Chengdu  610000
   China

   Email: atrix@163.com


   Rui Xu (editor)
   CETC 30
   Chengdu  610000
   China

   Email: jasmine_x@163.com





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   Jilong Wang (editor)
   Tsinghua University
   Beijing  100084
   China

   Email: wjl@tsinghua.edu.cn


   Congcong Miao (editor)
   Tsinghua University
   Beijing  100084
   China

   Email: 1010988944@qq.com





































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