IEEE 802.16m System shall Support Single-BS Transmission Mode for E-MBS Services
IEEE 802.16 Presentation Submission Template (Rev. 9)
Document Number: IEEE C802.16m-08/1009r1
Date Submitted: 2008-09-16
Source:
Chun-Yen Wang, ITRI
Chun-Yuan Chiu, ITRI
Chie-Ming Chou, ITRI
Fang-Ching (Frank) Ren, ITRI
Yung-Han Chen, ITRI
Richard Li, ITRI
Wern-Ho sheen, NCTU/ITRI
E-mail: ChunYen@itri.org.tw
richard929@itri.org.tw
*<http://standards.ieee.org/faqs/affiliationFAQ.html>
Re: MAC aspects of enhanced MBS - Call for Contributions on Project 802.16m System Description Document (SDD).
Venue: IEEE 802.16m Session#57, Kobe, Japan
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1
What is Single-BS Transmission
Superframe
SCH
SFH
……
……
frame
MBS data
USCCH
unicast
subframe
When single-BS transmission is applied to a E-MBS service, BS
may allocate a station ID to all MSs who participate in the
connection. E-MBS users can receive the E-MBS data burst by
monitoring USCCH with the shared station ID.
2
Why do we need Single-BS transmission mode?
In 16e, Single-BS access mode is seen as a special case of multi-BS
access mode with only one BS involved.
Single-BS transmission
MBSFN with only one cell
Adaptive MCS
Short response time
(Resource is allocated by
BS)
Longer response time (resource
is allocated by network)
HARQ retransmission
Easy
Inefficient
CP length
Short
Longer
End-to-end delay
Short
Longer (maximum backhaul
delay may be considered)
ASN gateway overhead
Light
Heavy (content synchronization
overhead)
3
Resource Efficiency
If we use 1-cell MBSFN
center
border
For the target cell: border -1 center -2
For each neighbor cell: border -1 center -0
If we use Single-BS Transmission Mode
center
border
For the target cell: border -3 center -0
For each neighbor cell : border -0 center -0
4
Proposed Text
The following text is proposed to be captured in the IEEE 802.16m system
description document (SDD).
------------------------------------------------------- Start of the proposed text -----------------------------------------------[Insert the following text into this section]
15
Support for Enhanced Multicast Broadcast Service
15.1 General Concepts
15.1.1 E-MBS Transmission Mode
15.1.1.1 Single-BS transmission mode
E-MBS services can be provided in single-BS transmission mode. In this case, BS may allocate a
station ID to all MSs who participate in the E-MBS connection. And E-MBS users receive the EMBS data burst by monitoring USCCH with the shared station ID.
15.1.1.2 Multi-BS transmission mode (MBSFN)
-------------------------------------------------------- End of the text -----------------------------------------------------5