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doc.: IEEE 802.11-13/0285r0March 2013
Submission
Resource Allocation Frame Format for RAW-based Medium Access
Date: 2013-03-18
Authors:
Chittabrata Ghosh, NokiaSlide 1
Name Affiliations Address Phone email Chittabrata Ghosh Nokia 2075 Allston Way,
Suite 200, Berkeley, CA - 94704
6502007566 [email protected]
Sayantan Choudhury Nokia
Esa Tuomaala Nokia
Klaus Doppler Nokia
Simone Merlin Qualcomm 5775 Morehouse Dr, San Diego, CA
8588451243 [email protected]
Alfred Asterjadhi Qualcomm
Amin Jafarian Qualcomm
Santosh Abraham Qualcomm
Menzo Wentink Qualcomm
Hemanth Sampath Qualcomm
VK Jones Qualcomm
Sun, Bo ZTE [email protected]
Lv, Kaiying ZTE [email protected]
Huai-Rong Shao Samsung [email protected]
Chiu Ngo Samsung [email protected]
Minho Cheong ETRI 138 Gajeongno, Yuseong-gu, Dajeon, Korea
+82 42 860 5635
Jae Seung Lee ETRI [email protected]
Hyoungjin Kwon ETRI [email protected]
Heejung Yu ETRI [email protected]
Jaewoo Park ETRI [email protected]
Sok-kyu Lee ETRI [email protected]
doc.: IEEE 802.11-13/0285r0March 2013
Submission Slide 2
Name Affiliations Address Phone email Minyoung Park Intel Corp. [email protected]
Tom Tetzlaff Intel Corp. [email protected]
Emily Qi Intel Corp. [email protected]
Su Khiong Yong Marvell [email protected]
Hongyuan Zhang Marvell [email protected]
Sudhir Srinivasa Marvell [email protected]
Yongho Seok LG Electronics LG R&D Complex Anyang-Shi, Kyungki-Do, Korea
+82-31-450-1947 [email protected]
Jinsoo Choi LG Electronics
Jeongki Kim LG Electronics
Jin Sam Kwak LG Electronics
Matthew Fischer Broadcom 190 Mathilda Place, Sunnyvale, CA
+1 408 543 3370 [email protected]
Eric Wong Broadcom [email protected]
Yong Liu Broadcom [email protected]
Rojan Chitrakar Panasonic [email protected]
Ken Mori Panasonic [email protected]
Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission Slide 3
Name Affiliations Address Phone email Shoukang Zheng I2R 1 Fusionopolis Way, #21-01
Connexis Tower, Singapore 138632
+65-6408 2000 [email protected]
Haiguang Wang I2R [email protected] Wai Leong Yeow I2R [email protected] Zander Lei I2R [email protected] Jaya Shankar I2R [email protected] Anh Tuan Hoang I2R [email protected] Joseph Teo Chee Ming I2R [email protected] George Calcev Huawei Rolling Meadows,
IL USA [email protected]
Osama Aboul Magd Huawei [email protected]
Young Hoon Huawei [email protected]
Betty Zhao Huawei [email protected]
David Yangxun Huawei [email protected]
Bin Zhen Huawei [email protected]
ChaoChun Wang MediaTek [email protected]
James Wang MediaTek [email protected]
Jianhan Liu MediaTek [email protected]
Vish Ponnampalam MediaTek [email protected]
James Yee MediaTek [email protected]
Thomas Pare MediaTek [email protected]
Kiran Uln MediaTek [email protected]
Anna Pantelidou Renesas Mobile
Juho Pirskanen Renesas Mobile
Timo Koskela Renesas Mobile
Liwen Chu STMicroelectronics
George Vlantis STMicroelectronics
Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission
Motivation• Motion passed in July 2012 IEEE meeting on RPS IE with Resource Allocation (RA)
frame indication as one of the Options field [1]– STAs wake up for delivery information of downlink traffic
• Motion passed on “Uplink Channel Access General Procedure” [2] – Indication of the downlink BU delivery slot should not overload the beacon
• New management frame indicates the downlink BU delivery slot per each STA after all PS-Poll/Trigger frame transmission completed.
• Single/multi-user medium access signaling to STAs prior to medium access• STAs with different MCS and amount of buffered data, result in variable slot
durations• Propose to define a RA frame format with above essential information
Slide 4 Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission
Illustration of RA Frame with DL/UL Traffic
Slide 5
AP
STA 4
STA 3
STA 1
RPS IEData 1
x0 x1 x2 x3 x4 x5 x6
Data 4
Data 3
RAW
RA
Fra
me
• Operation example in RAW after PS-Poll and UDI frame transmissions – STA 1: SU DL transmission– STA 2: SU UL transmission – STAs 3 and 4: MU DL transmissions
Data 2STA 2
PS
-Poll
PS
-Poll
PS
-Poll
AC
K
UD
IA
CK
AC
K
AC
K
AC
K
AC
K
AC
K
AC
K
Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission
Power Save Operation using RA Frame
• STAs wake up at beginning of RAW to receive RA frame• AP may indicate scheduling information in RA frame with following
information:• RAW Group assigned current RAW for medium access• Revised RAW duration • STA address or Modified TIM bitmap to determine assigned slots • Slot assignments with variable slot durations
• After receiving scheduling information in RA frame, each STA goes to sleep state till the indicated slot for medium access
Slide 6 Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission
Unified UL and DL Resource Allocation Frame Format
Slide 7
• RAW Group (TBD octets) is identical to the group in RPS IE • RAW Duration (TBD octets) is revised from RAW Duration in RPS IE based on PS-Polls and UDIs • Slot assignment (2 octets/MU Group and TBD octets/STA) defines access slot allocations for STAs
• Independent of TIM bitmap• 1 bit indication for SU-STAs within RAW for UL (bit set to 0) or DL traffic, bit reserved for MU-MIMO group• Multi-user MIMO supported when multiple STAs are assigned identical slot within RAW
• STA Address may be either a partial AID (TBD bits) or a Group ID (6 bits) for a MU group• 1 bit indicator prior to the address for indication of either partial AID (bit set to 0) or Group ID (bit set to 1)
• Slot Start Offset (1 octet) is start time of STA’s medium access, relative to the end of the RA frame, in TBD units
• Offset determined by AP based on buffered DL data for STAs from whom PS-Polls were received • Offset from UDIs indicating amount of buffered traffic
Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission
Summary
• We proposed an approach of indicating individual STA AIDs and their corresponding delivery intervals for both uplink and downlink transmission – TIM Bitmap independent approach– Supports MU-MIMO using common Slot Start Offsets for multiple STAs
Slide 8 Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission
Straw Poll 1
• Do you agree to define the resource allocation frame based on the approach illustrated in Slide 5?
Slide 9 Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission
Motion 1
• Move to define the resource allocation frame format based on the approach illustrated in Slide 5?
Slide 10 Chittabrata Ghosh, Nokia
doc.: IEEE 802.11-13/0285r0March 2013
Submission
References
[1] doc.: IEEE 802.11-12/0843r0: “Restricted Access Window Signaling for Uplink Channel Access”[2] doc.: IEEE 802.11-12/0831r0: “Uplink Channel Access General Procedure”
Slide 11 Chittabrata Ghosh, Nokia
