Title: Coordinated
approach for inter-cell interference management
Document Number: S802.16m-08/602r1
Date Submitted: July 16, 2008
Source:
Mariana Goldhamer
Voice:+972 3 645 6241
ALVARION
21a HaBarzel Street, Tel Aviv, Israel
mariana.goldhamer@alvarion.com
Venue:
Session #56, 15-18 July, 2008
Base Document: CS802.16m-08/602r1
Purpose:
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Interference mitigation principles
• Coordinated power rules
– Based on channel partition
• Reuse 1
• Reuse 3
• E-MBS
• Coordinated Advanced Antenna Techniques
(AAT)
– Interference nulling
– Inter-cell collaborative MIMO
• Etc.
Cellular deployment
• Reuse 1
– Center of the cell
– E-MBS single frequency network
• Reuse 3
– Cell edge for separating the interference in the
OFDMA domain
Resource allocation
• Shared SETs, used by all the sectors and intended for
Reuse 1 and E-MBS
• Dedicated SETs, used by a specific BS sector, in its
operation with mitigated interference (Master
operation).
– Intended for Reuse 3 operation.
– The Dedicated SET of a sector can be also used by another BS
Sector, if the Master operation is not affected. Such operation
of the other sector is named “Slave operation” and the SET
used in Slave operation is named “Slave SET”.
• Interference mitigation can be achieved by power rules or AAT-based
interference rejection.
• The ADAPTIVE FFR is covered by the SLAVE concept
Coordination on resource allocation
Super-Frame Header: System Configuration Information, Paging,
other Broadcast Information
Superframe
Preamble
CCHMBS
Frame (Frames are numbered F0 to F3)
E-MBS Shared SET
CCH0
Control/Data Shared SET
CCH1
Dedicated SET 1
Master operation of BS Sector 1
Dedicated SET 2
Slave operation of BS Sector 2
Dedicated SET 3
Slave operation of BS Sector 3
AAT for interference mitigation
• Each SET can use:
– Power rules for interference mitigation
• Defined for a specific Reuse case
– Advanced Antenna Techniques for interference
mitigation
- multi-cell (interference nulling, cooperative)
- Advanced Antenna Techniques in single cell
operation
Example of combined AAT in Reuse 1 SET
Super-Frame
Super-Frame Header: System Configuration Information, Paging,
other Broadcast Information
Frame (Frames are numbered F0 to F3)
Preamble
Preamble
CCHM
BS
E-MBS Shared SET
CCH0
DL SET 0
Control/Data Shared SET
CCH1
Dedicated SET 1
Master operation of BS Sector 1
rule SET 2
Dedicated
Slave operation of BS Sector 2
rule SET 3
Dedicated
Slave operation of BS Sector 3
CCH 0
AAT 1
CCH 0
AAT 2
DL SET 0 – AAT 1
DL SET 0 – AAT 2 12
Interference
separation by
AAT
techniques
Text for SDD
• In C802.16m/08-602r1