Submission doc.: IEEE 11-13/0288r0 TXOP Sharing Operation for Relay Date: 2013-03-25 Slide 1Eric...

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

TXOP Sharing Operation for Relay

Date: 2013-03-25

Slide 1

Authors:Name Affiliations Address Phone E-mail

Eric Wong Broadcom Sunnyvale, CA +1-408-922-6672 [email protected]

Matthew Fischer Broadcom Sunnyvale, CA [email protected]

Yong Liu Broadcom Sunnyvale, CA [email protected]

Young Hoon Kwon Huawei San Diego, CA +1-858-882-0329 [email protected]

ChaoChun Wang MediaTek USA [email protected]

Jinsoo Choi LG Electronics [email protected]

Rojan Chitrakar Panasonic R&D center Singapore

Singapore +65-65505347 [email protected]

Huai-Rong Shao Samsung Electronics San Jose, CA +1-408-544-2754 [email protected]

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, BroadcomSlide 2

March 2013

Name Affiliations Address Phone E-mail

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 [email protected]

Jeongki Kim LG Electronics

HanGyu Cho LG Electronics

Ken Mori Panasonic [email protected]

Sayantan Choudhury Nokia [email protected]

Klaus Doppler Nokia

Chittabrata Ghosh Nokia

Esa Tuomaala Nokia

Anna Pantelidou Renesas Mobile

Juho Pirskanen Renesas Mobile

Timo Koskela Renesas Mobile

Submission

doc.: IEEE 11-13/0288r0


March 2013


Simone Merlin Qualcomm [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]

Chiu Ngo Samsung [email protected]

Minho Cheong ETRI [email protected]

Jae Seung Lee ETRI [email protected]

Hyoungjin Kwon ETRI [email protected]

Jaewoo Park ETRI [email protected]

Sok-kyu Lee ETRI [email protected]

Liwen Chu STMicroelectronics

George Vlantis STMicroelectronics

Submission

doc.: IEEE 11-13/0288r0


March 2013


Shoukang Zheng I2R [email protected]

Haiguang Wang I2R [email protected]

Wai Leong Yeow I2R [email protected]

Zander Lei I2R [email protected]

Yuan Zhou I2R [email protected]

George Calcev Huawei [email protected]

Osama Aboul Magd Huawei [email protected]

Betty Zhao Huawei [email protected]

David Yangxun Huawei [email protected]

Bin Zhen Huawei [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]

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Outline

• The concept of TXOP sharing for relay to minimize power consumption and number of channel contentions has been presented in [1]

• Two ACK procedures are accepted for TXOP sharing• Explicit ACK [1]

• Implicit ACK [2]

• This proposal elaborates on the rules for TXOP operation

• Proposed to use a new bit for the purpose of operating within a relay shared TXOP

Slide 5

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Signaling for Relay TXOP

• Relayed Frame field• 1-bit to indicate if a frame is relayed within a TXOP

• For ACK and CTS frame, a similar bit is also needed in the Frame Control field and NDP SIG

• If this bit is set in an initiating frame (e.g. DATA), then it is a capability indication for implicit ACK

• If this bit is set in a responding frame (e.g. ACK, CTS), then it indicates relay shall share the TXOP and continue to transmit the frame over the next hop after SIFS

• The choice of which ACK procedure is decided by the Relay

Slide 6

Protocol Version Type From

DSMore

FragmentsPower Mgmt

More Data

Protected Frame EOSP Relayed

Frame

2 4 1 1 1 1 1 13

TID

1Bits:

Frame Control field in short MAC header

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Downlink with Explicit ACK

Slide 7

RelayedFrame=1AckInd=11

Relay sends ACK, and set response frame bits to 11 for next outgoing frame

DATA

SIFS

DATA

ACK

AP

STA

RELAY

SIFS

RelayedFrame=XAckInd=00



AP sends downlink DATA frame with response frame bits set to 00 to relay

After receipt of ACK, AP removes frame from buffer, and defers MAX_PPDU + ACK + 2*SIFS before next event

ACK

SIFS

In SIFS time, relay sends DATA with a different MCS and response frame bits set to 00. Relay buffers frame until successful delivery or reaching of retry limit

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Downlink with Implicit ACK

Slide 8

Relay sends DATA with a different MCS, and sets response frame bits to 00

DATA

SIFS

DATA

ACK

AP

STA

RELAY

SIFS



RelayedFrame=0 AckInd=10

AP sends downlink DATA frame with response frame bits set to 11, so that other STAs can expect another DATA frame will follow

Within SIFS time, AP receives a PHY SIG field with response frame bits set to 00, and checks next-hop PAID in PHY SIG field

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Uplink with Explicit ACK

Slide 9


Relay sends ACK, and set response frame bits to 11 for next outgoing frame

DATA

SIFS

DATA

ACKAP

STA

RELAY

SIFS

RelayedFrame=X AckInd=00



STA sends uplink DATA frame with response frame bits set to 00 to relay

After receipt of ACK, STA removes frame from buffer, and defers MAX_PPDU + ACK + 2*SIFS before next event

ACK

SIFS

In SIFS time, relay sends DATA with a different MCS and response frame bits set to 00. Relay buffers frame until successful delivery or reaching of retry limit

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Uplink with Implicit ACK

Slide 10

Within SIFS time, STA receives a PHY SIG field with response frame bits set to 00, and checks next-hop PAID in PHY SIG field

Relay sends DATA with a different MCS, and sets response frame bits to 00

DATA

SIFS

DATA

ACKAP

STA

RELAY

SIFS




STA sends uplink DATA frame with response frame bits set to 11, so that other STAs can expect another DATA frame will follow

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

TXOP Sharing Operation

• When a Relay receives a valid frame, the Relay may response with • An Implicit ACK in next-hop transmission after SIFS, if Relay has received Relayed Frame bit

set to 1

• An ACK after SIFS with Relayed Frame bit set to 1, and continue with next-hop DATA transmission after SIFS

• An ACK after SIFS with Relayed Frame bit set to 0, and does not continue to use the remaining TXOP

• A relay may set Relayed Frame bit to 1 only if it has received a More Data bit set to 0.

Slide 11

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Conclusion

• Proposed to define a new Relayed Frame bit for operation within a relay shared TXOP.

Slide 12

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Straw Poll 1

• Do you support a Relayed Frame bit in the Frame Control field for TXOP operation in slide 11?

Yes

No

Abstain

Slide 13

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

Straw Poll 2

• Do you support a Relayed Frame bit in the NDP ACK SIG field for TXOP operation in slide 11?

Yes

No

Abstain

Slide 14

March 2013

Submission

doc.: IEEE 11-13/0288r0

Eric Wong, Broadcom

References

[1] E. Wong et al., “Two-Hop Relay Function,” IEEE 11-12/1330r0

[2] Y. Kwon et al., “Implicit ACK for Relay,” IEEE 11-13/0075r0

Slide 15

March 2013

Submission doc.: IEEE 11-13/0288r0 TXOP Sharing Operation for Relay Date: 2013-03-25 Slide 1Eric...

Documents

Transcript of Submission doc.: IEEE 11-13/0288r0 TXOP Sharing Operation for Relay Date: 2013-03-25 Slide 1Eric...