Relay to Relay Communication - A SDD Proposal for 802.16m IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE S802.16m-08/047 Date.

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Relay to Relay Communication - A SDD Proposal for m IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE S802.16m-08/047 Date Submitted: Source: D. J. Shyy MITRE McLean, VA, USA Venue: Levi, Finland Base Contribution: IEEE C802.16m-08/047 Purpose: Request consideration of concept for System Architecture contained herein for the m SDD 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.

Outline Requirements to meet in m SRD Proposed functionalities for relay to relay communication Conclusion

Objective Present main functionalities for relay to relay communications in response to m SDD call for proposal

Requirements to Meet in IEEE m SRD

Requirements of Interest Requirements on advanced antenna techniques –Section 5.7 “IEEE m shall further support single-user and multi-user MIMO techniques” Requirements on interference management –Section “IEEE m shall support interference mitigation schemes.” “IEEE m shall support flexible frequency re-use schemes.” Requirements on multi-hop Relay –Section 8.1 “IEEE m should provide mechanisms to enable multi-hop relays including those that may involve advanced antenna technique transmission”

Relay to Relay Communication

A relay is allowed to communicate with another relay directly or a group of relays are allowed to communicate with another group of relays directly under the supervision of BSs. –Intra-cell relay to relay communication –inter-cell relay to relay communication

Benefits of Proposed Architecture The benefit is the ability to allow ad-hoc extension to infrastructure networks via –Intra-cell and inter-cell direct communication between relays –Intra-cell and inter-cell virtual MIMO between groups of relays Require cluster formation –Frequency reuse

Local Cluster Formation The network entry procedure* for j relay is mostly the same as that for e mobile except the following: –There are no establish IP connectivity, establish time of day, transfer operational parameters, and set up connections. –802.16j adds neighbor station measurement report, path selection, and relay operation parameters configuration The neighbor station measurement report is to report the signal strength and preamble index of neighbor relays to the BS. This report can be used to facilitate local cluster formation. *P802.16j_D1

Intra-Cell and Inter-Cell Virtual MIMO Intra-Cell MIMO Inter-Cell MIMO Two relays communicate with another two relays using virtual MIMO in a cell. Four relays in one cell communicate with another four relays in another cell using virtual MIMO.

Virtual MIMO Support in e and j UL MIMO with 2 or 4 mobiles (802.16e) UL MIMO with 2 or 4 relays (802.16j) DL MIMO with 2 or 4 relays (802.16j) However, j does not support inter-cell virtual MIMO between relays. Also, all the communication between relays needs to go through the BS.

Frame Structure Intra-cell –We propose to have a dedicated zone* for relay to relay communication in frequency, time or both. Inter-cell –To minimize interference, we propose to have dedicated zones in frequency Reference: “Views on IEEE m Frame Structure”, IEEE C802.16m-07/354

Conclusion We have presented our main functionalities for relay to relay communication. We would like these functionalities to be considered by m SDD.