--- 1/draft-ietf-opsawg-capwap-extension-05.txt 2015-07-06 13:15:14.347186011 -0700 +++ 2/draft-ietf-opsawg-capwap-extension-06.txt 2015-07-06 13:15:14.383186896 -0700 @@ -1,21 +1,23 @@ OPSAWG Y. Chen -Internet-Draft D. Liu -Updates: 5416 (if approved) H. Deng -Intended status: Standards Track China Mobile -Expires: April 26, 2015 Lei. Zhu +Internet-Draft China Mobile +Updates: 5416 (if approved) D. Liu +Intended status: Standards Track +Expires: January 7, 2016 H. Deng + China Mobile + Lei. Zhu Huawei - October 27, 2014 + July 6, 2015 CAPWAP Extension for 802.11n and Power/channel Autoconfiguration - draft-ietf-opsawg-capwap-extension-05 + draft-ietf-opsawg-capwap-extension-06 Abstract 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 have been published since RFC5416 was published in 2009. 802.11n is one of those amendments and it has been widely used in real deployment. This document extends the CAPWAP binding for 802.11 to support 802.11n and also defines a power and channel auto configuration extension. @@ -28,25 +30,25 @@ 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 http://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 April 26, 2015. + This Internet-Draft will expire on January 7, 2016. Copyright Notice - Copyright (c) 2014 IETF Trust and the persons identified as the + Copyright (c) 2015 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 (http://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 @@ -377,21 +379,23 @@ In normal mode, the WTP behaviour is controlled by three parameters: PrimeChlSrvTime, OnChannelScanTIme, and OffChannelScnTIme. These are provided by the IEEE 802.11 Scan Parameters message element defined in Section 4.3.1. The WTP will provide access service for stations for the duration given by PrimeChlSrvTime. It then scans the working channel for the duration given by OnChannelScnTime. It returns to servicing station access requests on the working channel for another period of length PrimeChlSrvTime, then moves to a different channel and scans it for duration OffChannelScnTime. It repeats this cycle, scanning a new non-working channel each time, until all the channels - have been scanned. + have been scanned. This channel scan procedure can be used to + determine the interference of both the current working channel and + non-working channel to avoid potential interference. When the WTP works in scan only mode, it does not distinguish between the working channel and scan channel. Every channel's scan duration will be OffChannelScnTime and PrimeChlSrvTime and OnChannelScanTime MUST be set to 0. 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 Channel Bind message elements in a Configure Status Response or WTP Configure Update Request message. @@ -438,23 +442,23 @@ detection scan. Report Time: Channel quality report time (unit: second). PrimeChlSrvTime: Service time (unit: millisecond) on the working scan 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 of this segment is 5000, the default value is 5000. On Channel ScanTime: The scan time (unit: millisecond) of the working - channel. When the M bit is set to 1, this segment is invalid(set to - 0). The maximum value of this segment is 120, the minimum value of - this segment is 60, the default value is 60. + channel. When the M bit is set to 1 (active scan), this segment is + invalid(set to 0). The maximum value of this segment is 120, the + minimum value of this segment is 60, the default value is 60. Off Channel ScanTime: The scan time (unit: millisecond) of the 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, the minimum value of this segment is 60, the default value is 60. 4.3.2. IEEE 802.11 Scan Channel Bind Message Element The format of the IEEE 802.11 Scan Channel Bind Message Element is as follows: @@ -556,22 +560,21 @@ Mean RSSI: The average signal strength of the scanned channel (dBm(2's complement)). Screen Packet Count: Received packet number. Neighbor Count: The neighbor number of this channel. Mean Noise: the average noise on this channel (dBm(2's complement)). - Interference: The interference of the channel, including STA - interference and WTP interference. + Interference: The interference of the channel. WTP Tx Occp: (The WTP transmission time/Monitor time)*255. The WTP transmission time is the total sending time of the WTP during the period of channel scan. WTP Rx Occp: (The WTP receiving duration time/Monitor time)*255. THe WTP receiving duration time is the total receiving time of the WTP during the period of channel scan. Unknown Occp: (All other packet transmission time duration/Monitor @@ -658,22 +661,22 @@ TBD5: Channel Scan Report Message Element type value described in section 4.3.3. TBD6 entry for WTP Neighbor Report as descrbed in section 4.3.4 . 7. Contributors This draft is a joint effort from the following contributors: 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 Hao Wang: Huawei3Come hwang@h3c.com Yakun Liu: AUTELAN liuyk@autelan.com Xiaobo Zhang: GBCOM Xiaolong Yu: Ruijie Networks @@ -729,26 +732,24 @@ Yifan Chen China Mobile No.32 Xuanwumen West Street Beijing 100053 China Email: chenyifan@chinamobile.com Dapeng Liu - China Mobile - No.32 Xuanwumen West Street - Beijing 100053 + Beijing China - Email: liudapeng@chinamobile.com + Email: maxpassion@gmail.com Hui Deng China Mobile No.32 Xuanwumen West Street Beijing 100053 China Email: denghui@chinamobile.com Lei Zhu