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doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Jiamin Chen, HuaweiSlide 1
Dynamic Channel Transfer(DCT) Procedure for IEEE 802.11aj （ 60GHz New Technique Proposal）
Date: 2013-11-13
Presenter:
Name Company Address Phone email
Jiamin CHEN Huawei/HiSilicon No.156 Beiqing Rd.,Hai-
Dian District,Beijing, China
+86-10-6061-2138
Jiamin.chen@mai01.huawei.com
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Author List
Slide 2 Jiamin Chen, Huawei
Name Company Email CHEN, Jiamin Huawei /CWPAN Jiamin.chen@mail01.huawei.com
CHEN, Qian I2R / CWPAN qchen@i2r.a-star.edu.sg
CHIN, Francois I2R /CWPAN chinfrancois@i2r.a-star.edu.sg
DU, Guanglong BUPT/CWPAN guanglong108@sina.com
GAO, Bo Tsinghua /CWPAN bgao_cug@126.com
HAO, Peng JUST /CWPAN haopeng@just.edu.cn
HONG, Wei SEU /CWPAN weihong@seu.edu.cn
LI, Dejian Huawei/CWPAN lidejian@huawei.com
LI, Zhiqiang IMECAS /CWPAN lizhiqiang@ime.ac.cn
LIU, Jianhan Media Tek/CWPAN Jianhan.liu@mediatek.com
LIU, Zongru Hangzhou Millimeter Wave
/CWPAN jerry.liu@milliwave.cn
LIU, Pei Hisilicon /CWPAN liupei@hisilicon.com
LU, Su Huawei /CWPAN su.lu@huawei.com
PENG, Xiaoming I2R/CWPAN pengxm@i2r.a-star.edu.sg
PNG, Khiam Boon I2R /CWPAN kbpng@i2r.a-star.edu.sg
SUN, Bo ZTE/CWPAN sun.bo1@zte.com.cn
WANG, Haiming SEU /CWPAN hmwang@seu.edu.cn
YEE, James Media Tek/CWPAN james.yee@mediatek.com
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Author List
Slide 3 Jiamin Chen, Huawei
Name Company Email
YUE, Guangrong UESTC/CWPAN yuegr@uestc.edu.cn
ZHANG, Changming Tshinghua University/CWPAN zhangcm10@mails.tsinghua.edu.cn
ZHUO, Lan CESI/CWPAN this_zl7812@163.com
ZOU, Weixia BUPT/CWPAN zwx0218@bupt.edu.cn
XIAO, Zhenyu Tshinghua University/CWPAN xiaozy@mail.tsinghua.edu.cn
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Abstract
• This document is to propose a MAC protocol amendment to support dynamic channel transfer procedure for 802.11aj (60GHz)
Slide 4 Jiamin Chen, Huawei
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Background(1/2)
• Proposed Channelization for 60GHz bands for 802.11aj
– There are 6 logical channels: 2 bands with 2.16GHz bandwidth (Channel 2 & 3), 4 bands with 1.08GHz bandwidth (Channel 5, 6, 7, 8);
– Supporting more than 3 logical channels for 802.11aj and keeping the backward compatibility with 802.11ad device；
Channelization for 60GHz bands in China
Jiamin Chen, HuaweiSlide 5
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Background(2/2)
• Regulations that apply to the 60GHz band in China allow RLANs to operate in the Chinese 60 GHz band to use 1.08GHz or 2.16GHz bandwidth, which requires a mechanism to coordinate the allocation of operating channel.
• This document propose a mechanism referred to as Dynamic Channel Transfer (DCT). This mechanism can improve the flexibility and channel utilization efficiency when 802.11aj devices operate in Chinese 60Ghz frequency band, in case that the idle channel bandwidth cannot satisfy the operating requirement for 802.11aj devices.
Jiamin Chen, HuaweiSlide 6
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj
Some cases (Case 1 to Case 3): A new STA may request an existing BSS to move to another available channel to allow the new 802.11aj STAs to establish a new BSS.
Slide 7
• Case 1 (Channel 6, 8 are occupied by existing BSS-1 and BSS-2 at 1.08GHz)
– New STA (to become PCP/AP-3) wants to start a new BSS-3 at 2.16GHz.
– PCP/AP-3 request BSS-1 on channel 6 to move to channel 7, or request BSS-2 on channel 8 to move to channel 5.
– PCP/AP-1 or PCP/AP-2 shall assess the request against its capabilities and the impact on its BSS’s performance.
– PCP/AP-1 or PCP/AP-2 may refuse the request for some reasons such as their BSS are busy and so on.
– If the request is confirmed, PCP/AP-3 may have a chance to use channel 2 or channel 3(2.16GHz) to start a new BSS.
• Case 2 / 3 are similar to Case 1Jiamin Chen, Huawei
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj
Slide 8
• Case 4 （ Channel 2, 8 are occupied by BSS-1 at 2.16 GHz and BSS-2 at 1.08 GHz respectively）
– New STA (to become PCP/AP-3) wants to start a new BSS-3 at 2.16 GHz.
– PCP/AP-3 requests BSS-1(PCP/AP-1) on channel 2 to move to channel 7.
– The PCP/AP-1 shall assess the request against its capabilities and the impact on its BSS’s performance .
– PCP/AP-1 may refuse the request for some reasons.
– If the request is confirmed, PCP/AP-3 may have a chance to use channel 2 (2.16GHz) for networking.
Jiamin Chen, Huawei
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj(60GHz)
• Public action frame in 802.11spec– Inter-BSS and AP to unassociated-STA communications
– Intra-BSS communication and so on
• Proposed new public action frame for the DCT procedure:
– DCT Measurement Request frame Request one or more STAs in the DCT responder PCP/AP’s BSS （ PBSS or
Infrastructure BSS ） to measure a specified channel or all other channels within supported operating class.
– DCT Measurement Report frame Be transmitted from the DCT responder PCP/AP to the DCT requester PCP/AP to
report the result of channel measurement or refuse the DCT request.
– DCT Request frame Request DCT responder PCP/AP’s BSS to move to an new available channel reported
in the DCT Measurement Report frame.
– DCT Response frame Be transmitted from the DCT responder PCP/AP to the DCT requester PCP/AP to
confirm or refuse the DCT request.Slide 9 Jiamin Chen, Huawei
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj
Dynamic Channel Transfer (DCT) procedure assessing idle channel for networking Requesting of measurements for new channel for the DCT responder BSS Reporting of the result of measurements Requesting existing BSS to move to a new channel Networking on target channel
Slide 10
DCT Requester PCP/AP DCT Responder PCP/AP STA in Responder PCP/AP’s BSS
SME MLME MLME SME MLME SME
Process DCT Request action
MLME-DCT Measurement
.request
DCT Measurement Request frame
MLME-DCT Measurement
.indication
Process Measurement/Radio
Measurement Request action
Measurement/Radio Measurement Request
Process DCT Measurement Request action Measurement/Radio
Measurement Report
MLME-DCT Measurement
.report
DCT Measurement Report frame
MLME-DCT Measurement
.confirm
MLME-DCT .request
DCT Request frame MLME-DCT .indication
MLME-DCT Measurement
.response
DCT Response frameMLME-DCT .confirm
Channel Switch Request
Decision to follow switch
Networking on the target channel
Loop 1,n
Operating on the new channel
listening on the target channel Channel switch
via PLMEChannel switch
via PLME
Jiamin Chen, Huawei
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
Conclusion
• This proposal is to provide a mechanism referred to as Dynamic Channel Transfer (DCT) procedure. This mechanism can improve the flexibility and channel utilization efficiency when 802.11aj devices operate in the Chinese 60Ghz frequency band, in case that the idle channel bandwidth cannot satisfy the operating requirement for 802.11aj devices.
Slide 11 Jiamin Chen, Huawei
doc.: IEEE 802.11-13/1345r0
Submission
November 2013
• Reference[1] IEEE 802.11-12/1197r0 - Physical Channel Consideration for Chinese 60GHz Band
Thank YOU!
Slide 12 Jiamin Chen, Huawei
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