Integrated Relay Architecture for IEEE 802.16m Systems
Document Number: S802.16m-07_299r1
Date Submitted: November 9, 2007
Source:
Sassan Ahmadi
Jerry Sydir
Hujun Yin
e-mail: sassan.ahmadi@intel.com
e-mail: jerry.sydir@intel.com
e-mail: hujun.yin@intel.com
Intel Corporation
Intel Corporation
Intel Corporation
Venue:
Atlanta, GA
Base Contribution:
IEEE C802.16m-07_299r1
Purpose:
For discussion and approval by IEEE 802.16 Working Group (Consideration of integrated relay for IEEE 802.16m systems)
Notice:
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add, amend or withdraw material contained herein.
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Outline
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•
•
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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
2
Logical Nodes and Interfaces
legacy 802.16e link
802.16e MS
legacy 802.16e link
802.16m BS
802.16m RS
802.16m link
802.16m link
802.16m MS
802.16m link
Scope of IEEE 802.16m
3
Multi-hop Relay Network Topology
R1
BS
R6
R8
MS
R1’
R1’’
RS
BS
R6
Access Service Network
Gateway
MS
R1’’’
MS
R1’
RS
Access Service Network
Layer 1 and Layer 2 protocols to be
specified by 802.16m standard
4
Frequency Usage and Duplexing With Relay
• Support for shared channel (in-band) and dedicated channel (out-ofband 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.
5
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
6
Data Plane Functions Classified as End-to-End and Hop-byHop
• 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.
7
IEEE 802.16m Air-Interface Protocol Stack
Example Classification of Layer 2 Functions Across Data and Control
Planes
Network Layer
Routing
Radio Resource
Management
Location
management
System
configuration
management
Multi-Carrier
Support
Mobility
Management
Idle Mode
Management
MBS
Self-Organization
Network-entry
Management
Security
management
Connection
Management
Convergence Sublayer
MAC Common Part Sub-layer (Resource Control and Management Functions)
QoS
ARQ
Data Forwarding
MAC Common Part Sub-layer (End-to-End Functions)
MAC Common Part Sub-layer (Hop-by-Hop Functions)
Fragmentation/Packing
Sleep Mode
Management
Scheduling and
Resource
Multiplexing
MAC PDU formation
PHY control
Multi-Radio
Coexistence
Interference
management
Ranging
Link Adaptation
(CQI, HARQ, power
control)
Control
Signaling
Encryption
Data Plane
Control Plane
Physical Layer
8
IEEE 802.16m Data Plane Protocol Stack by Station Type
BS
MAC CPS
MS
CS
CS
RS
E2E MAC
Functions
E2E MAC Functions
E2E MAC
Functions
HbH MAC
Functions
HbH MAC
Functions
HbH MAC
Functions
Security
Security*
Security
PHY
PHY
PHY
IEEE 802.16m Air-Interface
IEEE 802.16m Air-Interface
* 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)
9
IEEE 802.16m Control Plane Protocol Stack by Station Type
MAC CPS
MS
BS
RS
Resource Control &
Management
Functions
Resource Control &
Management
Functions
Resource Control &
Management
Functions
E2E MAC Functions
E2E MAC Functions
E2E MAC Functions
HbH MAC
Functions
HbH MAC
Functions
HbH MAC
Functions
Security
Security*
Security
PHY
PHY
PHY
IEEE 802.16m Air-Interface
IEEE 802.16m Air-Interface
Certain management messages may be ciphered
10