Frame Structure Considerations for 802.16n IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16n-11/0005 Date Submitted:

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Frame Structure Considerations for n IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16n-11/0005 Date Submitted: Source: Eldad ZeiraVoice: InterDigital Venue: IEEE n Base Contribution: N/A Purpose: To be discussed and adopted by n 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. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and. Further information is located at and. 1

Frame Structure Considerations for n

IEEE C802.16n-11/0005 Frame - or sub-frame – based switching? Some criteria: –Network controllable operation Avoid need for “hard wired” configurations –Suitable for all new features 1.HR-MS Forwarding 2.MS-MS communications (w or without a BS) 3.Device collaboration (optional under p) –Low latency where needed –Re-use existing designs as much as possible –Backward compatibility

IEEE C802.16n-11/0005 Frame Structure Options for Sub-frame switchingFrame switching StandardizationReuse RS / ARS design New design LatencyLowerHigher Multi-UseDevice CollaborationOK HR-MS ForwardingNaturalUnsuitable (source cannot receive BS) MS-MS direct communication New elements required FlexibilityAccess-relay balanceFlexible1:1 only Backward compatibility Yes (e.g m ABS / ARS frames) No T/R gapsNeededNone

IEEE C802.16n-11/0005 Conclusion Sub-frame switching is better suited for all new features One example of sub-frame switching is the RS / ARS frame structure

IEEE C802.16n-11/0005 Insert the following text (1/2) Basic frame structure The AAI frame structure is also used for the HR- MS direct communication when infrastructure isn’t present. One of the HR-MS uses the ABS and the other (P2P) or others (P2MP) use the AMS frame structure.

IEEE C802.16n-11/0005 Insert the following text (2/2) Basic frame structure supporting ARS a)The AAI ARS frame structure is also used for the HR-MS Forwarding case where the forwarding MS uses the ARS frame structure. b)The AAI ARS frame structure is also used for the MS-MS direct communication in the presence of infrastructure. One of the HR-MS uses the ARS and the other (P2P) or others (P2MP) use the AMS frame structure.

IEEE C802.16n-11/0005 FS for HR-MS Forwarding and MS-MS Direct communications w infrastructure (Example, 5:3 ratio frame)