draft-ietf-opsawg-capwap-extension-04.txt		draft-ietf-opsawg-capwap-extension-05.txt
	OPSAWG Y. Chen		OPSAWG Y. Chen
	Internet-Draft D. Liu		Internet-Draft D. Liu
	Updates: 5416 (if approved) H. Deng		Updates: 5416 (if approved) H. Deng
	Intended status: Standards Track China Mobile		Intended status: Standards Track China Mobile
	Expires: Nov 10, 2014 Lei. Zhu		Expires: April 26, 2015 Lei. Zhu
	Huawei		Huawei
	May 10, 2014		October 27, 2014
	CAPWAP Extension for 802.11n and Power/channel Autoconfiguration		CAPWAP Extension for 802.11n and Power/channel Autoconfiguration
	draft-ietf-opsawg-capwap-extension-04		draft-ietf-opsawg-capwap-extension-05
	Abstract		Abstract
	The CAPWAP binding for 802.11 is specified by RFC5416 and it was		The CAPWAP binding for 802.11 is specified by RFC5416 and it was
	based on IEEE 802-11.2007 standard. Several new amendments of 802.11		based on IEEE 802-11.2007 standard. Several new amendments of 802.11
	have been published since RFC5416 was published in 2009. 802.11n is		have been published since RFC5416 was published in 2009. 802.11n is
	one of those amendments and it has been widely used in real		one of those amendments and it has been widely used in real
	deployment. This document extends the CAPWAP binding for 802.11 to		deployment. This document extends the CAPWAP binding for 802.11 to
	support 802.11n and also defines a power and channel auto		support 802.11n and also defines a power and channel auto
	configuration extension.		configuration extension.
	skipping to change at page 1, line 38		skipping to change at page 1, line 39
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at http://datatracker.ietf.org/drafts/current/.		Drafts is at http://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on September 20, 2014.		This Internet-Draft will expire on April 26, 2015.
	Copyright Notice		Copyright Notice
	Copyright (c) 2014 IETF Trust and the persons identified as the		Copyright (c) 2014 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(http://trustee.ietf.org/license-info) in effect on the date of		(http://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 2, line 22		skipping to change at page 2, line 22
	1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2		1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
	2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3		2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
	3. CAPWAP 802.11n Support . . . . . . . . . . . . . . . . . . . 3		3. CAPWAP 802.11n Support . . . . . . . . . . . . . . . . . . . 3
	3.1. CAPWAP Extension for 802.11n Support . . . . . . . . . . 4		3.1. CAPWAP Extension for 802.11n Support . . . . . . . . . . 4
	3.1.1. 802.11n Radio Capability Information . . . . . . . . 4		3.1.1. 802.11n Radio Capability Information . . . . . . . . 4
	3.1.2. 802.11n Radio Configuration Message Element . . . . . 4		3.1.2. 802.11n Radio Configuration Message Element . . . . . 4
	3.1.3. 802.11n Station Information . . . . . . . . . . . . . 6		3.1.3. 802.11n Station Information . . . . . . . . . . . . . 6
	4. Power and Channel Autoconfiguration . . . . . . . . . . . . . 7		4. Power and Channel Autoconfiguration . . . . . . . . . . . . . 7
	4.1. Channel Autoconfiguration When WTP Power On . . . . . . . 7		4.1. Channel Autoconfiguration When WTP Power On . . . . . . . 7
	4.2. Power Configuration When WTP Power On . . . . . . . . . . 8		4.2. Power Configuration When WTP Power On . . . . . . . . . . 8
	4.3. Channel/Power Auto Adjusment . . . . . . . . . . . . . . 8		4.3. Channel/Power Auto Adjustment . . . . . . . . . . . . . . 8
	4.3.1. IEEE 802.11 Scan Parameters Message Element . . . . . 9		4.3.1. IEEE 802.11 Scan Parameters Message Element . . . . . 9
	4.3.2. IEEE 802.11 Channel Bind Message Element . . . . . . 11		4.3.2. IEEE 802.11 Scan Channel Bind Message Element . . . . 11
	4.3.3. IEEE 802.11 Channel Scan Report . . . . . . . . . . . 12		4.3.3. IEEE 802.11 Channel Scan Report . . . . . . . . . . . 12
	4.3.4. IEEE 802.11 Neighbor WTP Report . . . . . . . . . . . 14		4.3.4. IEEE 802.11 WTP Neighbor Report . . . . . . . . . . . 14
	5. Security Considerations . . . . . . . . . . . . . . . . . . . 15		5. Security Considerations . . . . . . . . . . . . . . . . . . . 15
	6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15		6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
	7. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 15		7. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 15
	8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 16		8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 16
	9. Normative References . . . . . . . . . . . . . . . . . . . . 16		9. Normative References . . . . . . . . . . . . . . . . . . . . 16
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 17		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 17
	1. Introduction		1. Introduction
	The 802.11-2009 [IEEE 802.11n.2009] standard was published in 2009 as		IEEE Std 802.11n[TM]-2009 [IEEE 802.11n.2009] was published in 2009
	an amendment to the IEEE 802.11-2007 standard to improve network		as an amendment to the IEEE 802.11-2007 standard to improve network
	throughput. The maximum data rate increases to 600Mbps. In the		throughput. The maximum data rate increases to 600Mbps. In the
	physical layer, 802.11n uses Orthogonal Frequency Division		physical layer, 802.11n uses Orthogonal Frequency Division
	Multiplexing (OFDM) and Multiple Input/Multiple Output (MIMO) to		Multiplexing (OFDM) and Multiple Input/Multiple Output (MIMO) to
	achieve the high throughput. 802.11n uses multiple antennas to form		achieve the high throughput. 802.11n uses multiple antennas to form
	an antenna array which can be dynamically adjusted to improve the		an antenna array which can be dynamically adjusted to improve the
	signal strength and extend the coverage.		signal strength and extend the coverage.
	Capabilities of 802.11n such as radio capability, radio configuration		Capabilities of 802.11n such as radio capability, radio configuration
	and station information need to be supported by CAPWAP control		and station information need to be supported by CAPWAP control
	messages. The necessary extensions for this purpose are introduced		messages. The necessary extensions for this purpose are introduced
	skipping to change at page 3, line 47		skipping to change at page 3, line 47
	scale deployment scenario, the operator needs to use 20MHz channel		scale deployment scenario, the operator needs to use 20MHz channel
	configuration in the 2.4GHz band to allow more non-overlapping		configuration in the 2.4GHz band to allow more non-overlapping
	channels.		channels.
	In the MAC layer, a new feature of 802.11n is Short Guard		In the MAC layer, a new feature of 802.11n is Short Guard
	Interval(GI). 802.11a/g uses an 800ns guard interval between the		Interval(GI). 802.11a/g uses an 800ns guard interval between the
	adjacent information symbols. In 802.11n, the GI can be configured		adjacent information symbols. In 802.11n, the GI can be configured
	to 400nm under good wireless conditions.		to 400nm under good wireless conditions.
	Another feature in the 802.11 MAC layer is Block ACK. 802.11n can use		Another feature in the 802.11 MAC layer is Block ACK. 802.11n can use
	one ACK frame to acknowledge several MAC Protocol Data Unit (MPDU)		one ACK frame to acknowledge receipt of several MAC Protocol Data
	receiving events.		Units (MPDUs).
	CAPWAP needs to be extended to support the above new 802.11n		CAPWAP needs to be extended to support the above new 802.11n
	features. CAPWAP should allow the access controller to know the		features. CAPWAP should allow the access controller to know the
	supported 802.11n features and the access controller should be able		supported 802.11n features and the access controller should be able
	to configure the different channel binding modes. This document		to configure the different channel binding modes. This document
	defines extensions of the CAPWAP 802.11 binding to support 802.11n		defines extensions of the CAPWAP 802.11 binding to support 802.11n
	features.		features.
	3.1. CAPWAP Extension for 802.11n Support		3.1. CAPWAP Extension for 802.11n Support
	skipping to change at page 5, line 15		skipping to change at page 5, line 15
	Radio ID: An 8-bit value representing the radio, whose value is		Radio ID: An 8-bit value representing the radio, whose value is
	between one (1) and 31.		between one (1) and 31.
	S bit: A-MSDU configuration: Enable/disable Aggregate MAC Service		S bit: A-MSDU configuration: Enable/disable Aggregate MAC Service
	Data Unit (A-MSDU). Set to 0 if disabled. Set to 1 if enabled.		Data Unit (A-MSDU). Set to 0 if disabled. Set to 1 if enabled.
	P bit: A-MPDU configuration: Enable/disable Aggregate MAC Protocol		P bit: A-MPDU configuration: Enable/disable Aggregate MAC Protocol
	Data Unit (A-MPDU). Set to 0 if disabled. Set to 1 if enabled.		Data Unit (A-MPDU). Set to 0 if disabled. Set to 1 if enabled.
	N bit: 11n Only configuration: Whether to allow only 11n user access.		N bit: 11n Only configuration: Whether to allow only 11n user access.
	Set to 0 if non-802.11n user access is allowed. Set to 1 if		Set to 0 if non-802.11n user access is allowed. Set to 1 if non-
	non-802.11n user access is not allowed.		802.11n user access is not allowed.
	G bit: Short GI configuration: Set to 0 if Short Guard Interval is		G bit: Short GI configuration: Set to 0 if Short Guard Interval is
	disabled. Set to 1 if enabled.		disabled. Set to 1 if enabled.
	B bit: Bandwidth binding mode configuration: Set to 0 if 40MHz		B bit: Bandwidth binding mode configuration: Set to 0 if 40MHz
	binding mode. Set to 1 if 20MHz binding mode.		binding mode. Set to 1 if 20MHz binding mode.
	Maximum supported MCS: Maximum Modulation and Coding Scheme (MCS)		Maximum supported MCS: Maximum Modulation and Coding Scheme (MCS)
	index. It indicates the maximum MCS index that the WTP or the STA		index. It indicates the maximum MCS index that the WTP or the STA
	can support.		can support.
	skipping to change at page 8, line 26		skipping to change at page 8, line 26
	The IEEE 802.11 Tx Power message element defined in section 6.18 of		The IEEE 802.11 Tx Power message element defined in section 6.18 of
	[RFC5416] is used by the AC to control the transmission power of the		[RFC5416] is used by the AC to control the transmission power of the
	WTP. The 802.11 Tx Power information element is carried in the		WTP. The 802.11 Tx Power information element is carried in the
	Configure Status Response message or in the Configure Update Request		Configure Status Response message or in the Configure Update Request
	message.		message.
	4.3. Channel/Power Auto Adjustment		4.3. Channel/Power Auto Adjustment
	The Channel Scan Procedure is illustrated by the figure 4.		The Channel Scan Procedure is illustrated by the figure 4.
	WTP Configure Status Req AC		WTP Configure Status Reqest AC
	------------------------------------------------------->		------------------------------------------------------->
	Configure Status Res(Scan Parameter Message Element, Channel Bind Message Element)		Configure Status Res(Scan Parameter Message Element, Channel Bind Message Element)
	<------------------------------------------------------		<------------------------------------------------------
	or		or
	WTP AC		WTP AC
	Configure Update Req(Scan Parameter Message Element, Channel Bind Message Element )		Configure Update Req(Scan Parameter Message Element, Channel Bind Message Element )
	<-----------------------------------------------------		<-----------------------------------------------------
	Configure Update Res		Configure Update Response
	----------------------------------------------------->		----------------------------------------------------->
	Figure 4: Channel Scan Procedure		Figure 4: Channel Scan Procedure
	The WTP has two work modes: normal mode and scan only mode. In		The WTP has two work modes: normal mode and scan only mode. In
	normal mode, the WTP can provide service for station access and scan		normal mode, the WTP can provide service for station access and scan
	channels at the same time. Whether the WTP will scan a given set of		channels at the same time. Whether the WTP will scan a given set of
	channels is determined by the Max Cycles field in the IEEE 802.11		channels is determined by the Max Cycles field in the IEEE 802.11
	Channel Bind message element defined in Section 5.2. When this field		Channel Bind message element defined in Section 4.3.2. When this
	is set to 0, the WTP will not scan the channel. If this field is set		field is set to 0, the WTP will not scan the channel. If this field
	to 255, the WTP will scan the channel continuously. The type of the		is set to 255, the WTP will scan the channel continuously. The type
	scan is determined by the Scan Type field. With the passive scan		of the scan is determined by the Scan Type field. With the passive
	type, the WTP monitors the air interface, using the received beacon		scan type, the WTP monitors the air interface, using the received
	frames to determine the nearby WTPs. With the active scan type, the		beacon frames to determine the nearby WTPs. With the active scan
	WTP will send a probe message and receive probe response messages.		type, the WTP will send a probe message and receive probe response
			messages. In this case, the WTP may need to operate in station mode
			which means it is not a WTP function only device, it also has part of
			station function.
	In the normal scan mode, the WTP behaviour is controlled by three		In normal mode, the WTP behaviour is controlled by three parameters:
	parameters: PrimeChlSrvTime, OnChannelScanTIme, and		PrimeChlSrvTime, OnChannelScanTIme, and OffChannelScnTIme. These are
	OffChannelScnTIme. These are provided by the IEEE 802.11 Scan		provided by the IEEE 802.11 Scan Parameters message element defined
	Parameters message element defined in Section 5.1. The WTP will		in Section 4.3.1. The WTP will provide access service for stations
	provide access service for stations for the duration given by		for the duration given by PrimeChlSrvTime. It then scans the working
	PrimeChlSrvTime. It then scans the working channel for the duration		channel for the duration given by OnChannelScnTime. It returns to
	given by OnChannelScnTime. It returns to servicing station access		servicing station access requests on the working channel for another
	requests on the working channel for another period of length		period of length PrimeChlSrvTime, then moves to a different channel
	PrimeChlSrvTime, then moves to a different channel and scans it for		and scans it for duration OffChannelScnTime. It repeats this cycle,
	duration OffChannelScnTIme. It repeats this cycle, scanning a new		scanning a new non-working channel each time, until all the channels
	non-working channel each time, until all the channels have been		have been scanned.
	scanned.
	When the WTP works in scan only mode, it does not distinguish between		When the WTP works in scan only mode, it does not distinguish between
	the working channel and scan channel. Every channel's scan duration		the working channel and scan channel. Every channel's scan duration
	will be OffChannelScnTime and PrimeChlSrvTime and OnChannelScanTime		will be OffChannelScnTime and PrimeChlSrvTime and OnChannelScanTime
	MUST be set to 0.		MUST be set to 0.
	As shown in Figure 4, the AC can control the scan behaviour at the		As shown in Figure 4, the AC can control the scan behaviour at the
	WTP by including the IEEE 802.11 Scan Parameters and IEEE 802.11		WTP by including the IEEE 802.11 Scan Parameters and IEEE 802.11
	Channel Bind message elements in a Configure Status Response or WTP		Channel Bind message elements in a Configure Status Response or WTP
	Configure Update Request message.		Configure Update Request message.
	Scan Report. After completing its scan, the WTP MAY send the scan		Scan Report. After completing its scan, the WTP MAY send the scan
	report to the AC using a WTP Event Request message. The scan report		report to the AC using a WTP Event Request message. The scan report
	information is carried in the IEEE 802.11 Channel Scan Report message		information is carried in the IEEE 802.11 Channel Scan Report message
	element (Section 5.3) and an instance of the IEEE 802.11 Information		element (Section 4.3.3) and an instance of the IEEE 802.11
	Element message element carrying a copy of theIEEE 802.11 Neighbor		Information Element message element carrying a copy of theIEEE 802.11
	WTP Report information element (Section 5.4).		Neighbor WTP Report information element (Section 4.3.4).
	4.3.1. IEEE 802.11 Scan Parameters Message Element		4.3.1. IEEE 802.11 Scan Parameters Message Element
	The format of the IEEE 802.11 Scan Parameters Message Element is as		The format of the IEEE 802.11 Scan Parameters Message Element is as
	shown in Figure 5:		shown in Figure 5:
	0 1 2 3		0 1 2 3
	0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1		0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Radio ID |M|S|L|D| | Report Time |		| Radio ID |M|S|L|D| | Report Time |
	skipping to change at page 10, line 24		skipping to change at page 10, line 24
	Figure 5: IEEE 802.11 Scan Parameters Message Element		Figure 5: IEEE 802.11 Scan Parameters Message Element
	Type: TBD3 for IEEE 802.11 Scan Parameters Message Element.		Type: TBD3 for IEEE 802.11 Scan Parameters Message Element.
	Length: 10.		Length: 10.
	Radio ID: An 8-bit value representing the radio, whose value is		Radio ID: An 8-bit value representing the radio, whose value is
	between one (1) and 31.		between one (1) and 31.
	M bit: Work mode of the WTP. 0:normal mode. 1: monitor only mode, no		M bit: Work mode of the WTP. 0:normal mode. 1: scan only mode, no
	service is provided in this mode.		service is provided in this mode.
	S bit: Scan Type: 0: active scan; 1: passive scan.		S bit: Scan Type: 0: active scan; 1: passive scan.
	L bit: L=1: Open Load Balance Scan. L=0: Disable Load Balance Scan.		L bit: L=1: Open Load Balance Scan. L=0: Disable Load Balance Scan.
	D bit: D=1: Open Rogue WTP detection scan. D=0: Disable Rouge WTP		D bit: D=1: Open Rogue WTP detection scan. D=0: Disable Rouge WTP
	detection scan.		detection scan.
	Report Time: Channel quality report time (unit: second).		Report Time: Channel quality report time (unit: second).
	PrimeChlSrvTime: Service time (unit: millisecond) on the working scan		PrimeChlSrvTime: Service time (unit: millisecond) on the working scan
	channel. This segment is invalid(set to 0) when WTP oper mode is set		channel. This segment is invalid(set to 0) when WTP oper mode is set
	to 1. The maximum value of this segment is 10000, the minimum value		to 1. The maximum value of this segment is 10000, the minimum value
	of this segment is 5000, the default value is 5000.		of this segment is 5000, the default value is 5000.
	On Channel ScanTime: The scan time (unit: millisecond) of the working		On Channel ScanTime: The scan time (unit: millisecond) of the working
	channel. When the WTP oper mode is set to 2, this segment is		channel. When the M bit is set to 1, this segment is invalid(set to
	invalid(set to 0). The maximum value of this segment is 120, the		0). The maximum value of this segment is 120, the minimum value of
	minimum value of this segment is 60, the default value is 60.		this segment is 60, the default value is 60.
	Off Channel ScanTime: The scan time (unit: millisecond) of the		Off Channel ScanTime: The scan time (unit: millisecond) of the
	working channel. When the WTP operating mode is set to 2, this		working channel. When the WTP operating mode is set to 2, this
	segment MUST be set to 0. The maximum value of this segment is 120,		segment MUST be set to 0. The maximum value of this segment is 120,
	the minimum value of this segment is 60, the default value is 60.		the minimum value of this segment is 60, the default value is 60.
	4.3.2. IEEE 802.11 Channel Bind Message Element		4.3.2. IEEE 802.11 Scan Channel Bind Message Element
	The format of the IEEE 802.11 Channel Bind Message Element is as		The format of the IEEE 802.11 Scan Channel Bind Message Element is as
	follows:		follows:
	0 1 2 3		0 1 2 3
	0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1		0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Flag | Max Cycles |Channel Count |ScanChannelSet.|		| Radio ID | Flag | Max Cycles |Channel Count |ScanChannelSet.|
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+---------------+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	Figure 6: IEEE 802.11 Channel Bind Message Element		Figure 6: IEEE 802.11 Scan Channel Bind Message Element
	Type: TBD4 for IEEE 802.11 Channel Bind Message Element.		Type: TBD4 for IEEE 802.11 Scan Channel Bind Message Element.
	Length: 4.		Length: variable.
	Radio ID: An 8-bit value representing the radio, whose value is		Radio ID: An 8-bit value representing the radio, whose value is
	between one (1) and 31.		between one (1) and 31.
	Flag: bitmap, reserved.		Flag: reserved.
	Max Cycles: Number of times the scanning cycle is repeated for the		Max Cycles: Number of times the scanning cycle is repeated for the
	set of channels identified by this message element. 255 means		set of channels identified by this message element. 255 means
	continuous scan.		continuous scan.
	Channel Count: The number of channels will be scanned.		Channel Count: The number of channels will be scanned.
	Scan Channel Set: identifies the members of the set of channels to		Scan Channel Set: identifies the members of the set of channels to
	which this message element instance applies. The format for each		which this message element instance applies. The format for each
	channel is as follows:		channel is as follows:
	skipping to change at page 12, line 7		skipping to change at page 12, line 7
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	Figure 7: Channel Information Format		Figure 7: Channel Information Format
	Channel ID: the channel ID of the channel which will be scanned.		Channel ID: the channel ID of the channel which will be scanned.
	Flag: Bitmap, reserved for future use.		Flag: Bitmap, reserved for future use.
	4.3.3. IEEE 802.11 Channel Scan Report		4.3.3. IEEE 802.11 Channel Scan Report
	There are two types of scan report: Channel Scan Report and Neighbor		There are two types of scan report: Channel Scan Report and WTP
	STA Report. Channel Scan Report is used to channel autoconfiguration		Neighbor Report. Channel Scan Report is used to channel
	while Neighbor WTP Report is used to power autoconfiguration. The		autoconfiguration while WTP Neighbor Report is used to power
	WTP send the scan report to the AC through WTP Event Request message.		autoconfiguration. The WTP send the scan report to the AC through
	The information element that used to carry the scan report is Channel		WTP Event Request message. The information element that used to
	Scan Report Message Element and Neighbor WTP Report Message Element.		carry the scan report is Channel Scan Report Message Element and WTP
			Neighbor Report Message Element.
	The format of the IEEE 802.11 Channel Scan Report message element is		The format of the IEEE 802.11 Channel Scan Report message element is
	in Figure 8.		in Figure 8.
	0 1 2 3		0 1
	0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1		0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Radio ID | Report Count | Channel Scan Report |		| Radio ID | Report Count | Channel Scan Report ... |
	+---------------------------------------------------------------+		+---------------------------------------------------------------+
	Figure 8: IEEE 802.11 Channel Scan Report Message Element		Figure 8: IEEE 802.11 Channel Scan Report Message Element
	Type: TBD5 for IEEE 802.11 Channel Scan Report message element.		Type: TBD5 for IEEE 802.11 Channel Scan Report message element.
	Length: >=29.		Length: >=29.
	Radio ID: An 8-bit value representing the radio, whose value is		Radio ID: An 8-bit value representing the radio, whose value is
	between one (1) and 31.		between one (1) and 31.
	skipping to change at page 13, line 28		skipping to change at page 13, line 28
	Figure 9: Channel Scan Report		Figure 9: Channel Scan Report
	Channel Number: The channel number.		Channel Number: The channel number.
	Radar Statistics: Whether detect radar signal in this channel. 0x00:		Radar Statistics: Whether detect radar signal in this channel. 0x00:
	detect radar signal. 0x01: no radar signal is detected.		detect radar signal. 0x01: no radar signal is detected.
	Mean Time: Channel measurement duration (ms).		Mean Time: Channel measurement duration (ms).
	Mean RSSI: The average signal strength of the scanned channel (dbm).		Mean RSSI: The average signal strength of the scanned channel
			(dBm(2's complement)).
	Screen Packet Count: Received packet number.		Screen Packet Count: Received packet number.
	Neighbor Count: The neighbor number of this channel.		Neighbor Count: The neighbor number of this channel.
	Mean Noise: the average noise on this channel.		Mean Noise: the average noise on this channel (dBm(2's complement)).
	Interference: The interference of the channel, including STA		Interference: The interference of the channel, including STA
	interference and WTP interference.		interference and WTP interference.
	WTP Tx Occp: (The WTP sending duration time/Monitor time)*255.		WTP Tx Occp: (The WTP transmission time/Monitor time)*255. The WTP
	The WTP sending duration time is the total sending time of		transmission time is the total sending time of the WTP during the
	the WTP during the period of channel scan.		period of channel scan.
	WTP Rx Occp: (The WTP receiving duration time/Monitor time)*255.		WTP Rx Occp: (The WTP receiving duration time/Monitor time)*255. THe
	THe WTP receiving duration time is the total receiving time of		WTP receiving duration time is the total receiving time of the WTP
	the WTP during the period of channel scan.		during the period of channel scan.
	Unknown Occp: (All other packet transmission time duration/Monitor		Unknown Occp: (All other packet transmission time duration/Monitor
	time)*255.		time)*255.
	CRC Err Cnt: CRC err packet number.		CRC Err Cnt: CRC err packet number.
	Decrypt Err Cnt: Decryption err packet number.		Decrypt Err Cnt: Decryption err packet number.
	Phy Err Cnt: Physical err packet number.		Phy Err Cnt: Physical err packet number.
	Retrans Cnt: Retransmission packet number.		Retrans Cnt: Retransmission packet number.
			Note:The values of the above four count fields for a non-operational
			channel can be ignored
	4.3.4. IEEE 802.11 WTP Neighbor Report		4.3.4. IEEE 802.11 WTP Neighbor Report
	0 1 2 3		0 1 2 3
	0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1		0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Element ID | Length |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Radio ID | Reserved | Number of Neighbor Report |		| Radio ID | Reserved | Number of Neighbor Report |
	+---------------------------------------------------------------+		+---------------------------------------------------------------+
	| Neighbor Infor... |		| Neighbor Infor... |
	+---------------------------------------------------------------+		+---------------------------------------------------------------+
	Figure 10: WTP Neighbor Report TLV		Figure 10: WTP Neighbor Report TLV
	The definition of Neighbor info is as follows:		The definition of Neighbor info is as follows:
	0 1 2 3		0 1 2 3
	0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1		0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| BSSID |		| BSSID |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| BSSID | Channel Number |		| BSSID | Channel Number |
	+---------------------------------------------------------------+		+---------------------------------------------------------------+
	| 2nd Offset | Mean RSSI | Sta Intf | AP Intf |		| 2nd Offset | Mean RSSI | Sta Occp | WTP Occp |
	+---------------------------------------------------------------+		+---------------------------------------------------------------+
	Figure 11: Neighbor info		Figure 11: Neighbor info
	BSSID: The BSSID of this neighbor WTP.		BSSID: The BSSID of this neighbor WTP.
	Channel Number: The channel number of this WTP neighbor.		Channel Number: The channel number of this WTP neighbor.
	2nd channel offset: The auxiliary channel offset of this WTP.		2nd channel offset: The auxiliary channel offset of this WTP.
	Mean RSSI: The average signal strength of this WTP (dbm).		Mean RSSI: The average signal strength of this WTP (dbm).
	Sta Intf: (The station air interface occupation time/Monitor		Sta Occp: (The station air interface occupation time/Monitor
	time)*255. The station air interface occupation time is the		time)*255.The station air interface occupation time is the air
	air interface occupation time caused by the stations which are connected		interface occupation time caused by the stations which are connected
	to this WTP.		to this WTP.
	AP Intf: (The WTP air interface occupation time/Monitor time)*255.		WTP Occp: (The WTP air interface occupation time/Monitor time)*255.
	The WTP air interface occupation time is the air interface occupation		The WTP air interface occupation time is the air interface occupation
	time caused by the WTP.		time caused by the WTP.
	5. Security Considerations		5. Security Considerations
	This document is based on RFC5415/RFC5416 and adds no new security		This document is based on RFC5415/RFC5416 and adds no new security
	considerations.		considerations.
	6. IANA Considerations		6. IANA Considerations
	skipping to change at page 15, line 33		skipping to change at page 15, line 37
	[RFC5416]. The following IEEE 802.11 specific message element type		[RFC5416]. The following IEEE 802.11 specific message element type
	need to be defined by IANA.		need to be defined by IANA.
	TBD1: 802.11n Radio Configuration Message Element type value		TBD1: 802.11n Radio Configuration Message Element type value
	described in section 4.1.2.		described in section 4.1.2.
	TBD2: 802.11n Station Message Element type value described in section		TBD2: 802.11n Station Message Element type value described in section
	4.1.3.		4.1.3.
	TBD3: 802.11 Scan Parameter Message Element type value described in		TBD3: 802.11 Scan Parameter Message Element type value described in
	section 5.3.1.		section 4.3.1.
	TBD4: 802.11 Channel Bind Message Element type value described in		TBD4: 802.11 Channel Bind Message Element type value described in
	section 5.3.2.		section 4.3.2.
	TBD5: Channel Scan Report Message Element type value described in		TBD5: Channel Scan Report Message Element type value described in
	section 5.3.3.		section 4.3.3.
			TBD6 entry for WTP Neighbor Report as descrbed in section 4.3.4 .
	7. Contributors		7. Contributors
	This draft is a joint effort from the following contributors:		This draft is a joint effort from the following contributors:
	Gang Chen: China Mobile chengang@chinamobile.com		Gang Chen: China Mobile chengang@chinamobile.com
	Naibao Zhou: China Mobile zhounaibao@chinamobile.com		Naibao Zhou: China Mobile zhounaibao@chinamobile.com
	Chunju Shao: China Mobile shaochunju@chinamobile.com		Chunju Shao: China Mobile shaochunju@chinamobile.com
	Hao Wang: Huawei3Come hwang@h3c.com		Hao Wang: Huawei3Come hwang@h3c.com
	Yakun Liu: AUTELAN liuyk@autelan.com		Yakun Liu: AUTELAN liuyk@autelan.com
	Xiaobo Zhang: GBCOM		Xiaobo Zhang: GBCOM
	Xiaolong Yu: Ruijie Networks		Xiaolong Yu: Ruijie Networks
	Song zhao: ZhiDaKang Communications		Song zhao: ZhiDaKang Communications
	Yiwen Mo: ZhongTai Networks		Yiwen Mo: ZhongTai Networks
	Dorothy Stanley: dstanley1389@gmail.com		Dorothy Stanley: dstanley1389@gmail.com
	Tom Taylor: tom.taylor.stds@gmail.com		Tom Taylor: tom.taylor.stds@gmail.com
	skipping to change at page 16, line 28		skipping to change at page 16, line 38
	suggestions. The authors also thanks Dorothy Stanley and Tom Taylor		suggestions. The authors also thanks Dorothy Stanley and Tom Taylor
	for their review and useful comments.		for their review and useful comments.
	9. Normative References		9. Normative References
	[IEEE-802.11.2009]		[IEEE-802.11.2009]
	"IEEE Standard for Information technology -		"IEEE Standard for Information technology -
	Telecommunications and information exchange between		Telecommunications and information exchange between
	systems Local and metropolitan area networks - Specific		systems Local and metropolitan area networks - Specific
	requirements Part 11: Wireless LAN Medium Access Control		requirements Part 11: Wireless LAN Medium Access Control
	(MAC) and Physical Layer (PHY) Specifications", 2009.		(MAC) and Physical Layer (PHY) Specifications,
			Enhancements for Higher Throughput (Amendment 5)", 2009.
	[IEEE-802.11.2012]		[IEEE-802.11.2012]
	"IEEE Standard for Information technology -		"IEEE Standard for Information technology -
	Telecommunications and information exchange between		Telecommunications and information exchange between
	systems Local and metropolitan area networks - Specific		systems Local and metropolitan area networks - Specific
	requirements Part 11: Wireless LAN Medium Access Control		requirements Part 11: Wireless LAN Medium Access Control
	(MAC) and Physical Layer (PHY) Specifications", March		(MAC) and Physical Layer (PHY) Specifications", March
	2012.		2012.
	[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate		[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
End of changes. 43 change blocks.
	81 lines changed or deleted		90 lines changed or added
This html diff was produced by rfcdiff 1.41. The latest version is available from http://tools.ietf.org/tools/rfcdiff/