1. Integrated Relay Architecture for IEEE 802.16m Systems Document Number: S802.16m-07_299 Date Submitted: November 12, 2007 Source: Sassan Ahmadie-mail: sassan.ahmadi@intel.comIntel Corporationsassan.ahmadi@intel.com Jerry Sydire-mail: jerry.sydir@intel.comIntel Corporationjerry.sydir@intel.com Hujun Yin e-mail: hujun.yin@intel.comIntel Corporationhujun.yin@intel.com Venue: Atlanta, GA Base Contribution: Call for Contributions on IEEE 802.16m System Description Document 802.16m-07_040 Purpose: For discussion and approval by IEEE 802.16 Working Group (Consideration of integrated relay for IEEE 802.16m systems) Notice: This document does not represent the agreed views of the IEEE 802.16 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 802.16. Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and.http://standards.ieee.org/guides/bylaws/sect6-7.html#6http://standards.ieee.org/guides/opman/sect6.html#6.3 Further information is located at and.http://standards.ieee.org/board/pat/pat-material.htmlhttp://standards.ieee.org/board/pat S802.16m-07_299

2. 2 Outline Logical Nodes and Interfaces Multi-hop Network Topology Frequency Usage and Duplexing With Relay Relay Functional Architecture Classification of Data Plane Functions IEEE 802.16m Air-Interface Protocol Stack IEEE 802.16m Data Plane Protocol Stack by Station Type IEEE 802.16m Control Plane Protocol Stack by Station Type

3. 3 Logical Nodes and Interfaces 802.16e MS 802.16m MS 802.16m RS 802.16m BS 802.16m link legacy 802.16e link Scope of IEEE 802.16m legacy 802.16e link

4. 4 Multi-hop Relay Network Topology R8 R1 BSMS BSRS R1’ Access Service Network Gateway R6 Access Service Network Layer 1 and Layer 2 protocols to be specified by 802.16m standard MS R1’’ R1’’’

5. 5 Frequency Usage and Duplexing With Relay Support for shared channel (in-band) and dedicated channel (out-of- band relay) –Shared channel model – BS and RSs share a frequency channel and coordinate the allocation of radio resources –Dedicated channel model – BS and RSs are assigned independent instances of frequency channels and do not coordinate the allocation of radio resources on the channels Duplexing schemes –Support both TDD and FDD deployments –Assume that entire network is either TDD or FDD –In FDD, all DL transmissions assigned to the DL band and all UL transmissions assigned to the UL band.

6. 6 Relay Functional Architecture Integrated relay architecture –Extend 802.16j architecture by making MSs aware of the presence of RSs and the multi-hop nature of the path between them and the BS. –Some examples of how this is useful are Allows better network entry decisions Support for advanced relay techniques Avoid the overhead of the split relay/access link architecture of IEEE 802.16j Support single relay mode based on one of 802.16j modes

7. 7 Data Plane Functions Classified as End-to-End and Hop-by- Hop Hop-by-hop Functions –Performed to transmit/receive data over a single hop in a multi-hop relay network. –Performed independently at each hop (coordination across hops is not required) –Performed in the same manner at each hop in the network –Some examples of such functions are link adaptation and scheduling. End-to-end Functions –Performed to transmit data across a multi-hop path. –Performed in a coordinated manner from source to destination –Can be performed differently at different stations along the path. –Some examples of such functions are packet forwarding, which is performed at all of the stations along a path, but is different at the source, destination, and intermediate nodes and ARQ, which is performed only at the source and destination.

8. 8 IEEE 802.16m Air-Interface Protocol Stack Example Classification of Layer 2 Functions Across Data and Control Planes

9. 9 IEEE 802.16m Data Plane Protocol Stack by Station Type MS PHY HbH MAC Functions E2E MAC Functions CS RS PHY HbH MAC Functions E2E MAC Functions BS PHY HbH MAC Functions E2E MAC Functions CS IEEE 802.16m Air-Interface Security Security* * Security functions may be limited in certain nodes of the network that are outside of direct control of the operator (also known as security zone) MAC CPS

10. 10 IEEE 802.16m Control Plane Protocol Stack by Station Type MS PHY HbH MAC Functions E2E MAC Functions Resource Control & Management Functions RS PHY HbH MAC Functions E2E MAC Functions Resource Control & Management Functions BS PHY HbH MAC Functions E2E MAC Functions Resource Control & Management Functions IEEE 802.16m Air-Interface Security Security* Certain management messages may be ciphered MAC CPS