Transcript IEEE C802.16m-08/1412

Proposed Text on Relaying Model for IEEE 802.16m SDD
IEEE 802.16 Presentation Submission Template (Rev. 9)
Document Number:
IEEE C802.16m-08/1412
Date Submitted:
2008-10-31
Source:
Aeran Youn, Jong Young Han, Dongguk Lim
Voice: +82-31-450-7188
Jin Sam Kwak, Kiseon Ryu
e-mail : {aryoun; fanaticey, dongguk, samji; ksryu}@lge.com
LG Electronics
LG R&D Complex, 533 Hogye-1dong, Dongan-gu, Anyang, 431-749, Korea
Venue:
TGm SDD: Relay - IEEE 802.16m-08/040 “Call for Contributions and Comments on Project 802.16m System Description Document
(SDD)”, in response to the following topics: “Section 15 Support for multi-hop relay
Base Contribution:
IEEE C80216m-08/1412
Purpose:
Discuss and adopt by TGm for Relay SDD Text.
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
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contained herein.
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1
Proposed Text on Relaying Model
for IEEE 802.16m SDD
2
Contents
 Introduction
 Transparent Relay Frame structure
 Transparent Relay Frame Structure
 Coexistence with transparent and non-transparent Relay Frame Strucuture
 DL Control Structure
 R-SCH
 BCH
 USCCH
 UL Control Structure
 Ranging for Non-synchronized MS/RS
 Fast feedback channel for MS/RS
 Bandwidth Request channel for MS/RS
 Text proposal
 References
3
Introduction
 In this contribution, we propose overall procedure of relaying
model, especially transparent relay mode.
 Assumptions
 16m MS should support 16m RS-awareness as agreed in 16jm ad-hoc [3].
 Transparent and non-transparent mode can coexist in the 16m BS
 Definition of Transparent and non-transparent mode
 Transparent RS
- A transparent mode means that a transparent RS does not transmit DL superframe-start
preamble (P-SCH), BCH, USCCH but the RS can transmit R-SCH for RS identification.
- In this contribution, the transparent mode limits 2-hop (does not consider multi-hop for
transparent mode).
 Non-transparent RS
- A non-transparent means that a non-nontransparent RS transmits DL superframe-start
preamble (P-SCH), BCH, USCCH [2].
4
Frame Structure (1/3)
 Transparent mode(1/2)
 A 16m BS should support transparent RS for throughput enhancement
 To support for RS-awareness, the 16m BS provides transparent RS information
to the 16m MS trying to communicate with the BS indirectly via the 16m RS
 RS Cell ID, R-SCH offset, etc
DL subframe
UL subframe
16m UL
Access Zone
16m DL
Access Zone
16m DL Relay
Zone
BS MS
BS MS
16m UL Relay
Zone
BS MS
BSMS
BS RS
BS RS
16m DL Receive
Zone
16m DL
Transmit Zone
(Rx)
G
A
P
(Rx)
(Rx)
16m UL Receive
Zone
RS MS
RS MS
(Tx)
(Rx)
5
16m UL
Transmit Zone
G
A
P
Tx to BS
(Tx)
Rx from BS
(Tx)
(Tx)
Frame Structure (2/3)
 Transparent mode(2/2)
 Definitions corresponding to transparent relay frame structure
 16m DL Relay Zone: An integer multiple of subframes located in the 16m zone of the
DL of the BS frame, where a 16m BS can transmit to the 16m MSs and RSs.
 16m DL Access Zone: An integer multiple of subframes located in the 16m zone of
the DL of the BS frame, where a 16m BS can transmit to the 16m MSs.
 16m DL Receive Zone: An integer multiple of subframes located in the 16m zone of
the DL of the RS frame, where a 16m RS can receive from the 16m BS.
 16m DL Transmit Zone: An integer multiple of subframes located in the 16m zone of
the DL of the RS frame, where a 16m RS can transmit to the 16m MSs.
 16m UL Access Zone; An integer multiple of subframes located in the 16m zone of
the UL of the BS frame, where a 16m BS can receive from the 16m MSs.
 16m UL Relay Zone: An integer multiple of subframes located in the 16m zone of the
UL of the 16m BS frame, where a 16m BS can receive from the 16m RSs and 16m MSs.
 16m UL Receive Zone: An integer multiple of subframes located in the 16m zone of
the UL of the 16m RS frame, where a 16m RS can receive from the 16m MSs.
 16m UL Transmit Zone: An integer multiple of subframes located n the 16m zone of
the UL of the 16m RS frame, where a 16m RS can transmit to the 16m BS.
6
Frame Structure (3/3)
DL subframe
16m DL
Transmit Zone
G
A
P
(Rx)
16m DL
Transmit Zone
RS MS G
Odd-Hop RS A
P
Even-Hop RS
RS MS
Odd-Hop RS
Even-Hop RS
(Tx)
16m UL Receive
Zone
16m UL
Transmit Zone
RS MS
G
Odd-Hop RS A
P
Even-Hop RS
(Rx)
16m DL Receive
Zone
16m UL
Transmit Zone
(Rx)
(Rx)
(Tx)
(Tx)
16m UL Receive
Zone
G
A
P
RS MS
Odd-Hop RS

16m DL Receive
Zone
(Rx)
Tx to
Even-Hop
Superordinate RS
or BS
(Tx)
(Tx)
7
BS RS
(Tx)

 BS: 16m Access Zone after 16m DL
Relay Zone (option 1, option 2)
 RS: 16m DL Transmit Zone after
16m DL Receive Zone (Option 1 odd-hop, Option 2- FFS)
RS Frame Structure –
non-transparent mode
 The order of DL subframe of 16m BS
and 16m RS should be changed for
coexistence.
BS MS
BSMS
BS RS

- BS  transparent RS  MS
- BS  non-transparent RS 
non-transparent RS… MS
BS MS

 A BS communicates with
transparent RS and nontransparent RS separately
RS Frame Structure –
transparent mode
- BS  transparent RS  nontransaparent RS …  MS
BS MS
16m UL Relay
Zone
16m UL
Access Zone
Tx to
Even-Hop
Superordinate RS
or BS
 A transparent RS is superordinate
RS of a non-transparent RS
16m DL
Access Zone
UL subframe
Rx from
Even-Hop
Superordinate RS
or BS
 Two types of Coexistence
16m DL Relay
Zone
Rx from
Even-Hop
Superordinate RS
or BS
BS Frame Structure
 Coexistence with transparent
and Non-transparent mode
Even-Hop RS
(Rx)
DL Control Structure(1/3)
 Downlink control channel are needed to convey information of 16m
RS
16m S-SCH
16m P-SCH
16m R-SCH
16m BS
Super-Frame: 20 ms
5 ms
16m RS
5 ms
 Relay Synchronization Channel (R-SCH)
 In transparent mode, a 16m RS should not transmit P-SCH but the 16m RS
should transmit R-SCH (s)
 The R-SCH provides a reference signal for RS awareness and RS identification
(ID)
 The location of the R-SCH symbol (s) is the fixed start of 16m DL Transmission
Zone within one frame
 The number of R-SCH within one superframe is TBD
8
DL Control Structure(2/3)
 Broadcast Channel (BCH)
 A BCH carries essential system parameters and system configuration information of 16m
BS and 16m RS
 In transparent mode, the BS can broadcast relay identification-related information such
as RS Cell IDs, the location of the R-SCH, and Relay-USCCH (R-USCCH) position or
relevance-time information, etc
 In non-transparent mode, the BS or RS can broadcast the relative position or relevancetime information of R-USCCH in centralized scheduling mode with one or more 16m
subordinate RSs
Super-Frame : 20 ms
SU0
SU1
SU2
SU3
Frame : 5 ms
F0
F1
Relative postion
F2
F3
Super-Frame Header
N-USCI
USCI
R_N-USCI
R-USCI
Broadcast Channel
Unicast Service Control Channel
- Non-User-Specific Control Information(N-USCI)
- User-Specific Control Information(USCI)
Relay Unicast Service Control Channel
- Relay Non-User-Specific Control Information(R_N-USCI)
- R9 User-Specific Control Information(USCI)
DL Control Structure(3/3)
 Unicast Service Control Channels (USCCH)
 USCCH is multiplexed Non-Relay USCCH and Relay-USCCH using FDM
 Non-Relay USCCH
- Non-user-specific control information (N-USCI)
- User-specific control information (USCI)
 Relay-USCCH
- Relay Non-user-specific control information (R_N-USCI)
- Relay User–specific control information (R-USCI)
 In transparent mode,
 R_N-USCI can indicate relevance time for the location of the resource allocation
 R_N-USCI can provide the location of the next R_N-USCI
 N-USCI provides control information of MSs which directly communicates with the
16m BS to decode the USCI
 The USCI contains allocation information for the MSs.
 The R_N-USCI provides control information of MSs which indirectly communicates
with the 16m BS via 16m RS to decode the R-USCI
 The R-USCCH contains allocation information for relayed MSs
- The R-USCCH can divide Downlink R-USCCH and UL R-USCCH
 In non-transparent mode
 The R-USCCH contains allocation information for the RSs to transmit in the Relay
zone to its subordinate RSs or MSs
10
UL Control Structure
 In transparent mode, the UL control channels carry multiple types of
control information to support the procedures on the access and relay links
 UL Ranging Channel for non-synchronized MS/RS
 In transparent relay mode, the IEEE 802.16m UL ranging channel structure can be
reused for uplink synchronization of the non-synchronized MS and RS.
 MSs and RSs can use the same or separate ranging opportunities for UL synchronization
 UL Fast Feedback Channel
 For the transparent mode, IEEE 802.16m UL fast feedback channel can be reused to
transmit the channel quality feedback from MS to the 16m RS.
 For RS transmission of the channel measurement/quality report to BS, the additional
feedback channel can be defined in the UL relay zone
 Details of UL fast feedback channel for the RS is FFS
 Bandwidth Request Channel
 Contention based or non-contention based random access is used to transmit a
bandwidth request indicator on this control channel
 In the contention based random access, for transparent relay mode, BS and each RS do not
know which MS or RS transmit the bandwidth request indicator and which MS or RS connect
with them
 Bandwidth request channels for BS and each RS may be separated by code, time and frequency
or other resource to distinguish MS and/or RS.
11
Text proposal
15. 1 Frame structure
15.1.1 Transparent Relay Frame Structure(1/3)
The definitions in the transparent relay frame structure as shown in Figure x are as follows:
 16m DL Relay Zone: An integer multiple of subframes located in the 16m zone of the DL
of the BS frame, where a 16m BS can transmit to the 16m MSs and RSs.
 16m DL Access Zone: An integer multiple of subframes located in the 16m zone of the DL
of the BS frame, where a 16m BS can transmit to the 16m MSs.
 16m DL Receive Zone: An integer multiple of subframes located in the 16m zone of the
DL of the RS frame, where a 16m RS can receive from the 16m BS.
 16m DL Transmit Zone: An integer multiple of subframes located in the 16m zone of the
DL of the RS frame, where a 16m RS can transmit to the 16m MSs.
 16m UL Access Zone; An integer multiple of subframes located in the 16m zone of the UL
of the BS frame, where a 16m BS can receive from the 16m MSs.
 16m UL Relay Zone: An integer multiple of subframes located in the 16m zone of the UL
of the 16m BS frame, where a 16m BS can receive from the 16m RSs and 16m MSs.
 16m UL Receive Zone: An integer multiple of subframes located in the 16m zone of the
UL of the 16m RS frame, where a 16m RS can receive from the 16m MSs.
 16m UL Transmit Zone: An integer multiple of subframes located n the 16m zone of the
UL of the 16m RS frame, where a 16m RS can transmit to the 16m BS.
12
Text proposal
15. 1 Frame structure
15.1.1 Transparent Relay Frame Structure(2/3)
DL subframe
UL subframe
16m UL
Access Zone
16m DL
Access Zone
16m DL Relay
Zone
BS MS
BS MS
16m UL Relay
Zone
BS MS
BSMS
BS RS
BS RS
16m DL Receive
Zone
16m DL
Transmit Zone
G
A
P
(Rx)
(Rx)
(Rx)
16m UL Receive
Zone
RS MS
RS MS
(Tx)
(Rx)
16m UL
Transmit Zone
G
A
P
Tx to BS
(Tx)
Rx from BS
(Tx)
(Tx)
Figure x. Transparent relay frame structure
13
Text proposal
DL subframe
BS MS
BS MS
BS RS
16m DL
Transmit Zone
16m DL
Transmit Zone
RS MS G
Odd-Hop RS A
P
Even-Hop RS
(Tx)
RS MS
Odd-Hop RS
Even-Hop RS
(Tx)
16m UL Receive
Zone
G
Odd-Hop RS A
P
Even-Hop RS
(Rx)
16m DL Receive
Zone
16m UL
Transmit Zone
(Rx)
16m UL
Transmit Zone
RS MS
Tx to
Even-Hop
Superordinate RS
or BS
G
A
P
(Rx)
(Tx)
(Tx)
16m UL Receive
Zone
G
A
P
RS MS
Odd-Hop RS

16m DL Receive
Zone
(Rx)
Tx to
Even-Hop
Superordinate RS
or BS
(Tx)

(Tx)

RS Frame Structure –
non-transparent mode
BS MS
BSMS
BS RS
(Rx)
15.1.2 Non-transparent Relay Frame
Structure
[The frame structure to support nontransparent multi-hop relay can be
found in 11.4.4.]
16m UL Relay
Zone
16m UL
Access Zone
Rx from
Even-Hop
Superordinate RS
or BS
RS Frame Structure –
transparent mode
16m DL
Access Zone

15.1.1 Transparent Relay Frame Structure
(3/3)
There are two coexistence types with
transparent and non-transparent
modes. One is a transparent RS is
superordinate RS of non-transparent
RS (s) and another is an IEEE 802.16m
BS communicates with transparent
RS and non-transparent RS
separately. Figure y shows the
transparent relay frame structure
supporting the transparent and nontransparent coexistence.
Rx from
Even-Hop
Superordinate RS
or BS
BS Frame Structure
15. 1 Frame structure
16m DL Relay
Zone
UL subframe
Even-Hop RS
(Rx)
Figure y. Frame structure supporting coexistence modes
14
Text proposal
15. 2 DL Control Channel(1/2)
Downlink control channel are needed to convey information related to IEEE 802.16m RS
15.2.1 Relay Synchronization Channel (R-SCH)
In transparent mode, the BS can broadcast relay identification-related information such
as RS Cell IDs, the location of the R-SCH, and Relay-USCCH (R-USCCH) position or
relevance-time information, etc
15.2.2 Broadcast Channel
In non-transparent mode, the BS or RS can broadcast the relative position or relevancetime information of R-USCCH in centralized scheduling mode with one or more 16m
subordinate RSs
15.2.3 Unicast Service Control Channels (USCCH)
In transparent mode, USCCH is multiplexed Non-Relay USCCH and Relay-USCCH using
FDM. Relay-USCCH consists of Relay Non-User-specific information and Relay Userspecific information. Relay Non-User-specific information provides the control
information to decode the Relay User-specific information. Relay Non-User-specific
information can indicate relevance time for the location of the resource allocation to
relayed MSs and provide the location of the next Relay Non-User-specific information.
In non-transparent mode, the R-USCCH contains allocation information for the IEEE
802.16m RSs transmitting in the Relay Zone for its subordinate RSs and 16m MSs.
15
Text proposal
15. 3 UL Control Channel
15.3.1 UL Ranging Channel for non-synchronized MS/RS
In transparent relay mode, the IEEE 802.16m UL ranging channel structure can
be reused for uplink synchronization of the non-synchronized MS and RS.
15.3.2 Fast Feedback Channel
For the transparent mode, IEEE 802.16m UL fast feedback channel can be
reused to transmit the channel quality feedback from MS to the 16m RS. For
RS transmission of the channel measurement/quality report to BS, the
additional feedback channel can be defined in the UL relay zone. The details
of UL fast feedback channel for the RS is FFS.
15.3.3 Bandwidth Request
Bandwidth Request Channels for IEEE 802.16m BS and IEEE 802.16m RS can
be separated by code, time and frequency or other resource to distinguish the
BR channels from 16m MS or RS.
16
References
[1] IEEE 802.16m-08/003r5, “The Draft IEEE 802.16m System Description
Document”
[2] IEEE P802.16j/D7, “Draft Amendment to IEEE Standard for Local
and Metropolitan Area Networks: Air Interface for Broadband
Wireless Access Systems Multihop Relay Specification,” Oct. 2008
[3] IEEE C80216m-08_242, “16jm Ad Hoc Group Report”
17