MAC Addressing Scheme for IEEE 802.16m
Document Number:
IEEE C802.16m-08/575r1
Date Submitted:
2008-07-012
Source:
Yih-Shen Chen, Kelvin Chou, I-Kang Fu and Paul Cheng
MediaTek Inc.
E-mail: yihshen.chen@mediatek.com, IK.Fu@mediatek.com, Paul.Cheng@mediatek.com
Fang-Ching (Frank) Ren and Richard Li
ITRI,
E-mail: frank_ren@itri.org.tw, richard929@itri.org.tw
Venue:
Re:
Base Contribution:
Purpose:
Denver, Colorado
Call for Comments and Contributions on Project 802.16m System Description Document (SDD)”.
- Target topic: “Upper MAC concepts and methods - Addressing
N/A
To be discussed and adopted by TGm for the 802.16m SDD
Notice:
This document has been prepared to assist IEEE 802.16. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The
material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained
herein.
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Motivation
In 802.16e, the 16-bit CID value is used for
MS identifier (Basic CID)
Control connection identifier (Primary CID, Secondary CID)
Transport connection identifier (Transport CID)
Drawbacks:
Long ID length for transport connection identifier
Identifiers of transport connection are to be re-negotiated after HO
Inefficient multiplexing scheme for data transmission
2
Proposed MAC Addressing Scheme
An MS identifier (MSID) is assigned for a MS during registration
M-bit long
Uniquely identified within a 802.16m cell
Parts of MSID are reserved for multicast and broadcast transmissions
Connection identifiers (CID) is assigned for management and data
connections
N-bit long
During registration, a set of CIDs are pre-assigned for the MS
The pre-assigned CIDs are used to convey MAC management messages between MS
and BS
ARQ-enabled/non-ARQ-enabled
After the registration, a set of connection identifiers are assigned per connection
setup request
These CIDs are used to transport downlink and uplink communications
Locally assigned
Usually, M > N
3
Proposed MAC Addressing Scheme
Data multiplexing:
Only one generic MAC header (GMH) is required to be inserted into the head of
data packet
Subpackets from multiple transport connections are multiplexed onto the data
packet and identified by their corresponding CIDs
The format of GMH is FFS
Benefit
Low overhead packet format
Consistent with BR scheme
BS grants UL bandwidth is per-MS based
Since the transport CID is locally assigned and tied with the MS, it is not
necessary to re-negotiate the CIDs during the HO procedure
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Example of MAC Addressing
16-bit MSID
4-bit CID
CID 0: ARQ-enabled primary management connection
CID 1: non-ARQ-enabled primary management connection
CID 2: ARQ-enabled secondary management connection
CID 3: non-ARQ-enabled secondary management connection
CID 4~CID 15: data connection
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Text Proposal for 802.16m SDD
Section 10.x.1: Addressing
An MS identifier (MSID) is assigned for a MS after registration
M-bit long
Uniquely identified within a 802.16m cell
Parts of 16-bit MSIDs are reserved for multicast and broadcast connections
Connection identifiers (CID) is assigned for management and data connections
N-bit
A set of CIDs are pre-assigned for management connections upon registration
ARQ-enabled
non-ARQ-enabled
Other CIDs are reserved for data connections upon service setup
6