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Restricted Access Window Signaling for Uplink Channel Access

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Presentation on theme: "Restricted Access Window Signaling for Uplink Channel Access"— Presentation transcript:

1 Restricted Access Window Signaling for Uplink Channel Access
Month Year doc.: IEEE yy/xxxxr0 July 2012 Restricted Access Window Signaling for Uplink Channel Access Date: Authors: Name Affiliations Address Phone Chittabrata Ghosh Nokia Berkeley, CA Klaus Doppler Taejoon Kim Sayantan Choudhury Matthew Fischer Broadcom 190 Mathilda Place, Sunnyvale, CA Eric Wong Minyoung Park Intel Hillsboro, OR Tom Tetzlaff Emily Qi Yongho Seok LG Electronics Jinsoo Choi Jeongki Kim Jin Sam Kwak ChaoChun Wang MediaTek James Wang Jianhan Liu Vish Poonampalam James Yee Thomas Pare Kiran Uln Chittabrata Ghosh, Nokia John Doe, Some Company

2 5775 Morehouse Dr., San Diego, CA
Month Year doc.: IEEE yy/xxxxr0 July 2012 Authors: Name Affiliations Address Phone Huai-Rong Shao   Samsung Electronics Chiu Ngo Yong Liu Marvell Hongyuan Zhang Sudhir Srinivasa Simone Merlin Qualcomm 5775 Morehouse Dr., San Diego, CA Alfred Asterjadhi Amin Jafarian Santosh Abraham Menzo Wentink Hemanth Sampath VK Jones George Calcev Huawei Rolling Meadows,IL, USA Osama Aboul-Magd Young Hoon Kwon Betty Zhao David Yangxun Bin Zhen Minho Cheong ETRI 138 Gajiongno, Yuseong-gu, Dajeon, Korea Jae Seung Lee Hyoungjin Kwon Heejung Yu Jaewoo Park Sok-kyu Lee Sun, Bo         ZTE Lv, Kaiying Chittabrata Ghosh, Nokia John Doe, Some Company

3 Authors: July 2012 doc.: IEEE 802.11-yy/xxxxr0 Month Year Name
Affiliations Address Phone Rojan Chitrakar Panasonic Ken Mori Shoukang Zheng I2R Haiguang Wang Yeow Wai Leong Zander Lei Jaya Shankar Anh Tuan Hoang Joseph Teo Chee Ming Chittabrata Ghosh, Nokia John Doe, Some Company

4 Prior Medium Access Proposals
Month Year doc.: IEEE yy/xxxxr0 July 2012 Prior Medium Access Proposals Synchronized DCF (S-DCF) among STAs introducing the grouping concept, with group information included in the beacon frame [1] DTIM Announcement includes restricted access window (RAW) information and STAs covered by the AID segment are allowed to access channel within RAW [2] depicted below Uplink medium access by STAs within the AID segment in TIM controlled using contention based on TIM information [3] DTIM-1 TIM-1.1 TIM-1.2 TIM-1.3 RAW Chittabrata Ghosh, Nokia John Doe, Some Company

5 RAW Information Element in (Short) Beacon
July 2012 RAW Information Element in (Short) Beacon FH Parameter Set DS Parameter Set CF Parameter Set Time Stamp Beacon Interval Supported Rates RAW Parameter Set Capability Information SSID Proposed IE Propose [1] to add an Information Element termed as Restricted Access Window Parameter Set (RAW) element in (short) Beacon frame for indication of restricted access window (RAW) RAW parameter set (RPS) for group ‘n’ shall comprise of: (i) RAW Group: AID range of STA allowed to access channel in RAW (ii) RAW Start Time: Medium access start time for group ‘n’ (iii) RAW Duration: Duration of medium access (iv) Options (v) Slot Definition Chittabrata Ghosh, Nokia

6 RPS Information Element
July 2012 RPS Information Element Element ID Length RAW RAW RAW N Octets RAW Group RAW Start Time RAW Duration Options Slot Definition Element ID : Grouping element may be issued an Element ID of 222 (at present reserved) Length: Number of octets in the Information Element (TBD) RAW 1 to RAW N: Details about initiation, duration and configuration of medium access for N groups Chittabrata Ghosh, Nokia

7 RAW Group July 2012 Feature Value Interpretation Page ID 2 bits
Month Year doc.: IEEE yy/xxxxr0 July 2012 RAW Group Feature Value Interpretation Page ID 2 bits Indicates the page index for hierarchical AID (based on hierarchical AID) of the allocated group Block Offset 5 bits Assuming 32 blocks per page, these bits indicate the starting block index of the allocated group Block Range Indicates the number of blocks (starting from the block offset) for the allocated group Chittabrata Ghosh, Nokia John Doe, Some Company

8 RAW Start Time and RAW Duration
Month Year doc.: IEEE yy/xxxxr0 July 2012 RAW Start Time and RAW Duration RAW Start Time 8 bits Duration in TU from end of beacon transmission to RAW Start time RAW Duration TBD Duration of RAW in TU Chittabrata Ghosh, Nokia John Doe, Some Company

9 Options Field and Slot definition
Month Year doc.: IEEE yy/xxxxr0 July 2012 Options Field and Slot definition Access restricted to paged STA only 2 bits Bit 1: Set to 1 if only STA with their TIM bit set to 1 are allowed to perform UL transmissions Bit 2: Set to 1 if RAW is reserved for frames with duration smaller than slot duration, such as PS-Polls / trigger frames (ignored if Bit 1 is not set) Group/Resource allocation frame indication 1 bit Set to 1 to indicate if STAs need to wake up at the beginning of the RAW to receive group addressed frames such as resource allocation (format of the resource allocation frame TBD) Slot defintion TBD bits Include Slot duration signalling Slot assignment to STA Cross boundary transmissions allowed/not allowed Format is TBD Resource allocation frame Chittabrata Ghosh, Nokia John Doe, Some Company

10 July 2012 Summary We proposed to add a RAW Parameter Set information element in (short) Beacon frame for restricted access window (RAW) Definition of the RAW information element Chittabrata Ghosh, Nokia

11 July 2012 Straw Poll 1 Do you support to include, in TGah Spec Framework document, the concept of an optionally present RAW Parameter Set IE in the (short) beacon? Chittabrata Ghosh, Nokia

12 July 2012 Straw Poll 2 Do you support to include, in TGah Spec Framework document, the concept of the following sub-fields as specified in slides 7-9 in the RAW IE within the (short) beacon ? - RAW Group with TBD bit allocations - RAW Start Time - RAW Duration - Options Fields and - Slot definition Chittabrata Ghosh, Nokia

13 July 2012 References [1] Group Synchronized DCF, IEEE /0329r1 [2] Uplink Channel Access General Procedure, IEEE /0831r0 [3] Uplink Channel Access, IEEE /0606r1 Chittabrata Ghosh, Nokia

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