Dedicated Channel and Supplementary Channel for Talk-around Direct Communications Document Number: IEEE S802.16n-11/0132 Date Submitted: 2011-07-19 Source:

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Dedicated Channel and Supplementary Channel for Talk-around Direct Communications Document Number: IEEE S802.16n-11/0132 Date Submitted: Source: Young-Ho Jung, Jihoon Choi Korea Aerospace University Sungcheol Chang, Eunkyung Kim, Sungkyung Kim, Won-Ik Kim, Miyoung Yun, Hyun Lee, Chulsik Yoon, Kwangjae Lim ETRI Re: Call for comments on the n AWD Base Contribution: IEEE C802.16n-11/0132r1 Purpose: To be discussed and adopted by TGn Notice: This document does not represent the agreed views of the IEEE Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. Copyright Policy: The contributor is familiar with the IEEE-SA Copyright Policy. Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and..html#6sect6.html#6.3 Further information is located at and.

Introduction Frame structure for talk-around direct communication (TDC) –Sync-Ch (synchronization channel)  IEEE C802.16n-11/0131 –Ded-Ch (dedicated channel) –Sup-Ch (supplementary channel) Ded-Ch –Channel for transmit data packets and control packets Sup-Ch –Channel for transmit associated messages (MAC message, PHY signaling, feedback message) for Ded-Ch –1:1 correspondence between a dedicated sub-channel and a supplementary sub-channel 2 This contribution

Frame structure for TDC Example. 3 uplink subframes/ 5msec frame –Synchronization Channel (Sync-CH): 1 st subframe of each superframe –Dedicated Channel(Ded-CH): 1 st subframe of the 2 nd and 4 th frame –Supplementary Channel(Sup-CH): the other subframes 3 A B A Sup-Ch for slot 2 Ded-Ch B Sup-Ch for slot 1 Ded-Ch

Resource segmentation for Ded-Ch and Sup-Ch mRB (mini-resource block) –6 subcarriers x 6 OFDM symbols –Each subframe for CDMZ is composed of 12 mRBs half-mRB –An mRB for Sup-Ch is divided into two half- mRB –One half-mRB is composed of 3 subcarriers x 5 OFDM symbols (6 th OFDM symbol is empty symbol) 4 mRBs for Ded-Ch mRBs for Sup-Ch

Dedicated Channel Dedicated sub-channel –Minimum allocation size of dedicated channel –One dedicated sub-channel is a set of 9 mRBs mRBs distributed across the entire frequency region in the same slot Number of dedicated sub-channels according to the number of uplink subframes in a frame Dedicated channel is used for transmitting data packets and control packets 5 The number of uplink subframes in a 5msec frame The number of dedicated sub- channel in the slot 1 The number of dedicated sub- channel in the slot 2 Total number of dedicated sub-channels

Supplementary Channel Supplementary sub-channel –Each dedicated sub-channel has 1:1 correspondence with a supplementary sub-channel composed of two half-mRBs in the different slot Information transmitted by using the Sup-Ch –MAC messages: RTS, CTS, MCS information, ranging response et. al. –PHY signalings: periodic ranging sequence, sounding signal et. al. –Short feedback messages: ACK, NACK, CQI, CSI, RI (rank information) et. al. 6

Ded-Ch and Sup-Ch structure 2 UL subframes/ 5msec frame 7 subframe index mRB index - Ded-subchannel 3 and 6 cannot be assigned to the same TDC pair -Ded-subchannel 1 is composed of nine mRBs in the slot 1 (blue color) -Sup-subchannel 1 is composed of two half-mRBs (C1) in the subframe 7 (slot 2)

Ded-Ch and Sup-Ch structure 3 UL subframes/ 5msec frame 8 subframe index mRB index

Ded-Ch and Sup-Ch structure 4 UL subframes/ 5msec frame 9 subframe index mRB index

Ded-Ch and Sup-Ch structure 5 UL subframes/ 5msec frame 10 subframe index mRB index

Proposed Text See IEEE C802.16n-11/0132r1 11