Efficient connection identification for overhead reduction
IEEE 802.16 Presentation Submission Template (Rev. 9)
Document Number:
IEEE C802.16m-08/758
Date Submitted:
2008-07-07
Source:
Dongyao Wang, Gang Shen, Jimin Liu, Kaibin Zhang, Shan Jin
Voice: 86-21-58541240-7167
Email: Gang.A.Shen@alcatel-sbell.com.cn
Alcatel Shanghai Bell
388#, Ningqiao Road, Pudong Jinqiao
Shanghai, 201206, P.R. China
Venue:
[802.16m] [16jm] Session #56, 13-18 July, 2008
Base Contribution:
IEEE C802.16m-08/758
Purpose:
For discussion in TGm to provide a tuple <MS ID, SCID> scheme to identify a connection for overhead reduction
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Objectives
• Meet the requirements of 16m
– Reduction of system overhead
• Connection-oriented MAC is preferred in 16m
– Backward compatibility
– QoS guarantee
• Propose an efficient scheme to identify one
connection
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Proposed scheme to identify connection
• Tuple structure <MS ID, SCID*>
– m-bit MS ID is assigned to identify one MS
– n-bit SCID is used to identify an MS-specific connection
<m-bit MS ID
,
n-bit SCID>
• The length of SCID may be variable to support different
applications
• Several control mechanisms could be optimized, and thus
system overhead is reduced.
*ABBREVIATION
SCID
-
Short Connection ID
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Examples
• Uplink Resource Allocations and
Transmission
– One burst pertain to one MS in uplink
– Burst allocation is based on MS ID
– Transmitted MAC PDUs are described
by MS-specific SCID
– Decrease overhead of MAC PDU due to
short MAC header
– Also applicable for downlink
UL_MAP_IE
SCID
MAC PDU
MS ID =1
Burst 1
MS ID =2
MS ID =3
Burst 2
MAC PDU
SCID
Burst 3
MAC PDU
SCID
UL_MAP
Burst 4
Uplink Subframe
• Optimize the procedure of network entry
– Only MS ID is assigned to MS
– SCIDs for control channels are predetermined and reserved, such as Basic
Connection and Primary Management Connection
• Simplify handover procedure
– MS-specific SCIDs is not necessary to be updated in handover
– Only MS ID is required to be updated
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Text proposal
Insert the following text into SDD section 10 - Medium Access Control Sub-Layer
10 Medium Access Control Sub-Layer
10.x.x Data/Control plane
Connections can be identified by a tuple <MS ID, SCID>. MS ID is assigned to identify one MS,
while SCID is to define one MS-specific connection.
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