Text Proposals of HR-MS Forwarding in 16n Network

IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number:

IEEE S802.16n-11/0074Date Submitted:

2011-05-16Source:

Sungcheol Chang, Eunkyung Kim, Sungkyung Kim, Hyun Lee, Chulsik Yoon E-mail: scchang@etri.re.kr , ETRI ekkim@etri.re.kr

Venue:Call for Comments on the 802.16n Amendment Working Document < 80216n-10_0049r1.pdf >

Base Contribution:IEEE C802.16n-11/0074

Purpose:To be discussed and adopted by TG802.16n

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.

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Introduction

• A set of contributions for direct communication– C802.16n-11/0071: Frame Structure and PHY Structure

– C802.16n-11/0072: PHY Control Structure

– C802.16n-11/0073: MAC Control Operations

Forwarding Function of MS

• Forwarding traffic data between two interfaces– Infrastructure interface between BS and MS

– Direct communication interface between MS and MS• C802.16n-10/0051,52,53,54.

• New functionality at infrastructure interface is required to support forwarding function at forwarding MS.– New transmission and singing feature are added at the

infrastructure interface

Forwarding MSBS

MS2

Infrastructure interface

Direct Communicationinterface

Forwarding Procedure: MS List Update

• The BS maintains the list of MS out of coverage– The MS list is advertised from the BS to all the MSs within

the coverage.

– The forwarding MS detects an MS not listed in the MS list. The MS is out of service coverage and is allowed only direct communication between the forwarding MS and the MS.

– The forwarding MS updates the MS list using DM-List Update Request/Response (DM-LU-REQ/RSP).

4

2

3

DM-LU-REQDM-LU-RSP

5

1

DM-MS-LIST

Forwarding Procedure: Traffic Transmission

• To minimize the modification of MAC PDU transmission at infrastructure interface– A service flow to identify forwarding traffic

• A modification of service flow description is required to identify service flow used for forwarding traffic data at forwarding MS.

MS ABS

MS B

MS C

FID kFID n

MSID B

MSID C

Forwarding Procedure: Signaling

• FWD (Fwording) Prefix for management messages, which are defined at the infrastructure interface.

Forwarding MSBS

MS2

Infrastructure interface

Direct Communicationinterface

Link Establishment DM-RNG-REQ/RSPFlow Management DM-DSx-REQ/RSP/ACK

Link Release DM-DREG-REQ/RSP

1:1 Procedures

FWD-RNG-REQ/RSPFWD-DSx-REQ/RSP/ACKFWD-DREG-REQ/RSP

1:1 Procedures

DM-RNG-CMDDM-DSx-CMDDM-DREG-CMD

1:N ProceduresFWD-RNG-CMDFWD-DSx-CMDFWD-DREG-CMD

1:N ProceduresLink EstablishmentFlow Management

Link Release

DM-PAG-ADVPaging FWD-PAG-ADV

Forwarding Procedure: Signaling

• Examples of 1:1 and 1:N Signaling Procedures– Paging to notify MS

– Link establishment with RNG-REQ/RSP/CMD.

– Link release with DREG-REQ/RSP

– Service flow management with DSx-REQ/RSP/ACK

MS A MS BFWD-PAG-ADV DM-PAG-ADV

DM-RNG-REQFWD-RNG-REQ

FWD-DSA-REQ DM-DSA-REQDM-DSA-RSPFWD-DSA-RSPDM-DSA-ACKFWD-DSA-ACK

1:1

DM-RNG-RSPFWD-RNG-RSP

(Optional)

MS A forwards traffic data between BS and MS B

Additional service flow is activated

MS BFWD-RNG-CMD DM-RNG-CMD

FWD-DSA-CMD DM-DSA-CMD

1:N

MS A forwards traffic data between BS and MS B

Additional service flow is activated

Proposed text for 16n AWD

• See IEEE C802.16n-11/0074.doc to support HR-MS forwarding function – MS List Update

– Traffic Transmission

– New management messages at infrastructure interface• Paging

• Link management of establishment and release

• Service flow management