A MAC Addressing in IEEE 802.16m IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-08/754r1 Date Submitted: 2008-07-15 Source: Sungcheol Chang, Sunggeun Jin, Seokheon Cho, JungIm Kim, Voice: +82-42-860-5456 SooJung Jung, Hyun Lee, Kwangjae Lim, Chulsik Yoon. E-mail: {scchang, kjlim, csyoon}@etri.re.kr ETRI 161 Gajeong-dong Yusong-gu Daejeon, Korea Venue: Re : IEEE 80216m-08/024 : Call for Comments and Contributions on Project 802.16m SDD – Upper MAC concepts and methods (limited to addressing, mobility and power management) - Addressing Base Contribution: Purpose: To discuss and adopt the proposed text in the next revision of the 802.16m SDD 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: <http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and <http://standards.ieee.org/guides/opman/sect6.html#6.3>. Further information is located at <http://standards.ieee.org/board/pat/pat-material.html> and <http://standards.ieee.org/board/pat >.

Scope and Keys MAC connection identifier Reduction of duplicate information Hierarchical architecture: Two step Separation of user-related and service-related parts Small MAC PDU header for VoIP service Minimize MAC PDU overhead with service-related connection identifier within a user.

Motivations Flat connection identifier in legacy system CID with user-related and service-related information User-related information is duplicated if a MAP indicates the user information 2-byte CID in 6-byte Fixed MAC header PDU header overhead for small-size SDU 23-byte SDU with ROHC for G.729A voice source 6-byte PDU header + 4-byte CRC (optional)

MAP and CID Modulation-based resource allocation CID in MAC PDU has the information of user and service User-based resource allocation DL/UL resource allocation with basic CID CID in MAC PDU has the duplicate information of user. HARQ is applicable.

Hierarchical Identification Separation of user-related and service related parts. User identification for resource allocation User MAC ID is unique within a cell Service identification with a user for PDU User SID (Service ID) is unique within a user

MAC PDU with Small Overhead New MAC PDU header with User SID Use User SID ≤ 1 byte instead of 2-byte CID Remove HCS Reduce and rearrange redundant fields Small MAC overhead for VoIP SDU MAC PDU header ≤ 3 bytes 10% overhead reduction for VoIP SDU

SDD Texts 11.X Upper MAC Concepts 11.x.1 MAC Addressing MAC identification has an hierarchical structure which consists of user-related and service-related parts. For the user-related part, User MAC Identifier (ID)s identify users in a cell uniquely. The User MAC ID is utilized at resource allocation in control channel or MAP. User Service Identifier (SID)s discriminates connections within user as the service-related part. The User SID is in new MAC PDU header to identify a connection within user. The MAC PDU results in low overhead. The set of ID sizes is FFS. The ID size is configurable by cell broadcast information.