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Duplicate Bandwidth and Operation

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Presentation on theme: "Duplicate Bandwidth and Operation"— Presentation transcript:

1 Duplicate Bandwidth and Operation
Month Year doc.: IEEE yy/XXXXr0 March 2013 Duplicate Bandwidth and Operation Date: Authors: Name Affiliation Address Phone Liwen Chu STMicroelectronics Hongyuan Zhang Marvell George Vlantis Yuan Zhou I2R Zander Lei Shoukang Zheng Haiguang Wang Yeow Wai Leong ChaoChun Wang MediaTek James Yee Simone Merlin Qualcomm Minyoung Park Intel Corp. Jianhan Liu Vish Ponnampalam James Wang Liwen Chu, ST Shoukang ZHENG et. al, I2R, Singapore

2 Name Affiliation Address Phone Email
March 2013 Name Affiliation Address Phone Huairong Shao Samsung Chiu Ngo Su Khiong Yong Marvell Sudhir Srinivasa Sayantan Choudhury Nokia 2075 Allston Way, Suite 200, Berkeley, CA 94704 Klaus Doppler Chittabrata Ghosh Esa Tuomaala Sun, Bo         ZTE Lv, Kaiying         Tom Tetzlaff Intel Corp. Emily Qi Yongho Seok LG Electronics LG R&D Complex Anyang-Shi, Kyungki-Do, Korea Jinsoo Choi Jeongki Kim Jin Sam Kwak Liwen Chu, ST

3 Name Affiliation Address Phone Email
March 2013 Name Affiliation Address Phone Matthew Fischer Broadcom 190 Mathilda Place, Sunnyvale, CA Eric Wong Yong Liu Rojan Chitrakar Panasonic Ken Mori Alfred Asterjadhi Qualcomm Amin Jafarian Santosh Abraham Menzo Wentink Hemanth Sampath VK Jones Minho Cheong ETRI 138 Gajeongno, Yuseong-gu, Dajeon, Korea Jae Seung Lee Hyoungjin Kwon Jaewoo Park Sok-kyu Lee Liwen Chu, ST

4 Name Affiliation Address Phone Email
March 2013 Name Affiliation Address Phone George Calcev Huawei Rolling Meadows, IL USA Osama Aboul Magd Young Hoon Kwon Betty Zhao David Yangxun Bin Zhen Anna Pantelidou Renesas Mobile Juho Pirskanen Timo Koskela Liwen Chu, ST

5 Duplicate Bandwidth Indication Requirement in 11ac/ah
Bandwidth and dynamic indication are carried in PHY scrambler seed field. 3 bits are used: 2 bits for bandwidth indication (20MHz. 40MHz, 80MHz, 160/80+80MHz), 1bit for dynamic indication. Signalling TA is used to indicates that scrambler seed includes bandwidth. In ah, 1MHz duplicate and 2MHz duplicate are required. 4 bits is required for bandwidth and dynamic indication in a 1MHz duplicate mode. 3 bits for bandwidth indication (1MHz, 2MHz, 4MHz, 8MHz, 16MHz), 1bit for dynamic indication. There are issues in 11ah to carry bandwidth and dynamic indication in scrambler seed field. There is no legacy STAs in 11ah band. Changing control frames to carry Bandwidth and dynamic indication is ok. 7 reserved bits in Frame Control field can be used to carry such information. B0 B1 B2 B3 B4 B7 B8 B9 B10 B11 B12 B13 B14 B15 Protocol Version Type (Control) Subtype To DS (0) From DS (0) More Frag (0) Retry (0) Power Management More Data (0) Protected Frame (0) Order (0) Liwen Chu, ST 5

6 PHY Concerns Assume that we carry over the 11ac scrambler seed mechanism for delivering the BW and Dyn BW indications. In the case of 1MHz dup mode, 3 bits required for BW indication, and 1 bit required for DynBW indication, this leaves only 3 random bits for scrambling seed. Only 7~8 combinations. May affect the averaged data field PAPR. An alternative design is to use the reserved bit in the SERVICE field, but typically we don’t want to use up all the bits in SERVICE field. It is then easier to move this indication to MAC header reserved bits. Parsing the additional MAC subfield is much easier and of lower risks. Liwen Chu, ST

7 Proposed Duplicate Bandwidth Indication in 11ah
In a 1MHz duplicate control frame, Bandwidth Indication 0, 1, 2, 3, 4 indicate 1MHz, 2MHz, 4MHz, 8MHz, 16 MHz respectively. Other values of Bandwidth Indication are reserved. In a 2MHz duplicate control frame, Bandwidth Indication 1, 2, 3, 4 indicate 2MHz, 4MHz, 8MHz, 16 MHz respectively. Other values of Bandwidth Indication are reserved. Dynamic Indication in RTS indicates whether duplicate RTS/CTS are used for dynamic bandwidth negotiation. Dynamic Indication is reserved (set to 0) in other control frames. B0 B1 B2 B3 B4 B7 B8 B10 B11 B12 B13 B14 B15 Protocol Version Type (Control) Subtype Bandwidth Indication Dynamic Indication Power Management More Data (0) Protected Frame (0) Order (0) Liwen Chu, ST 7

8 Pre Motion 1 Do you agree to include in ah SFD bandwidth and dynamic bandwidth indication to be defined in the frame control fields of control frames with details TBD, whether this is to be applied to non-duplicate control frames except 1 or 2 MHz is TBD? Yes No Abstain Liwen Chu, ST 8

9 Reference [1] 11-11/1137r13 Proposed Specification Framework for TGah.
Liwen Chu, ST 9

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