1. Title: 802.16m Frame structure for intra-system interference management Document Number: S802.16m-08/238 Date Submitted: March 12, 2008 Source: Mariana GoldhamerVoice:+972 3 645 6241 mariana.goldhamer@alvarion.commariana.goldhamer@alvarion.com ALVARION 21a HaBarzel Street, Tel Aviv, Israel Venue: Session #54, 17-20 March, 2008 Base Document: C802.16m-08/238 Purpose: Support the comments to the Frame Rapporteur Group output document Notice This document does not represent the agreed views of the IEEE 802.16 Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.16. Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and.http://standards.ieee.org/guides/bylaws/sect6- 7.html#6http://standards.ieee.org/guides/opman/sect6.html#6.3 Further information is located at and.http://standards.ieee.org/board/pat/pat-material.htmlhttp://standards.ieee.org/board/pat

2. 802.16m Frame structure for intra-system interference management Mariana Goldhamer Alvarion

3. Sub-frame implications - 1 Frame Structure in C802.16m/08-118r1 –Latency problem is resolved by introducing sub-frames New limitation: everything goes in time domain –Reuse 1 –Reuse 3 –Relays –Legacy support –Coexistence with Bluetooth –Coexistence with 802.11 –Coexistence with UMTS/LTE

4. Sub-frame implications - 2 Not enough sub-frames in TDD –5 DL –3 UL Limitation of the max. allocation size –1/8 or 12.5% in TDD –2/8 or 25% in FDD Granularity of allocation –20% in TDD –12.5% in FDD

5. Target of this contribution Flexible Frame structure in both sub-channel and time domains –Increasing the resolution of allocation to 1/Nsubchann 30 subchann – > 3% –More flexibility allowed Separate Reuse 1 and Master/Slave (Reuse 3 or Reuse 4) sub-channel SETs Major group is a SET example Flexible sub-channel allocation per SET Power rules per SETs Broadcast (E-MBS) support as single frequency channel –Harmonization with the multi-frame concept The sub-channel allocation per SET is done at the multi-frame start

6. SETs and power density SETs consists of a number of sub-channels: –Reuse 1 SETs Broadcast (E-MBS) SET Control/Data SET (C/D SET) Send MAPs for every one of these SETs Send MCH (MAP Control Header) for every sub-channel SET –Master / Slave SETs (Master in Reuse 3 or Reuse 4) Introduce the rule of Master/Slave power control in the sub-channel domain –Each sector has assigned sub-channels to be used at Tx max. power and Rx minimum interference (MASTER SET) –Each sector may use the other sub-channels (SLAVE SET) at lower power, such to not create interference to the Rx MASTER sub-channels

7. Example of power rules for SETs Sector 3 Sector 2 Sector 1 Sub-channels Max. power density Time Legacy interval Slave SET Master SET Reuse 1 C/D SET Legacy interval Slave SET Master SET Legacy interval Master SET Slave SET Reuse 1 C/D SET Slave SET Reuse 1 C/D SET E-MBS SET

8. Highlights of the power rules Master/Slave – Control/Data –The max. power is allocated in a Reuse 3 Master/Slave mode Only one sector in a BS can use a SET for Tx at max. power density Only one SET per Sector is guaranteed the min. Rx interference Slave SETs are not allowed to create interference to Master SETs Reuse 1 – E-MBS –Special allocation of a “single frequency” channel, which can use the max. power density Reuse 1 – Control/Data

9. OFDMA High Level Frame Structure Super-Frame Frame (Frames are numbered F0 to F3) Reuse N Configuration Example: SET 1: Master SET 2: Slave SET 3: Slave Super-Frame Header: System Configuration Information, Paging, other Broadcast Information Broadcast Control SET0 Configuration DL SET 1 Master power rule DL SET 2 Slave rules DL SET 3 Slave rules Preamble DL SETB – Broadcast (E-MBS) MCH0 DL SET 0: Control/Data Reuse 1 MCHB MCH1

10. Highlights of the Frame structure Separate sub-channel SETs for: –Reuse 1 E-MBS –Reuse 1 Control/Data can span over the un-used E-MBS Set in time-domain –Control/Data in Master/Slave power approach Multi-frame preamble adapted to SET/Zone concepts MCH and MAP are transmitted per each Reuse 1 and Master SET on well known OFDMA coordinates –MCH (Map Control Header), indicating: Used sub-channels for the SET STC used for MAP transmission Modulation/coding for the MAP of the SET Type of the SET: Reuse 1 control/data, Reuse 1 E-MBS, Master –MAP of the SET, containing the control information SET flexibility in the sub-channel domain –The number of sub-channels allocated to a SET can be changed every multi- frame

11. DL SETs and Multi-Frame - FDD Highlight: Full and flexible channel usage in both freq and time domains Example: SET1 is Master Multi-frame Preamble MCH0 MCHB MCH1 DL SET 1 Master power rule DL SET 2 Slave power rule DL SET 3 Slave power rule DL SETB – E-MBS DL SET 1 Master power rule DL SET 2 Slave power rule DL SET 3 Slave power rule DL SETB – E-MBS DL SET 0: Control/Data Reuse 1 DL SET 0: Control/Data Reuse 1 C/DC/D DL SET 1 Master power rule DL SET 2 Slave power rule DL SET 3 Slave power rule DL SETB – E-MBS DL SET 0: Control/Data Reuse 1 C/DC/D DL SET 1 Master power rule DL SET 2 Slave power rule DL SET 3 Slave power rule DL SETB – E-MBS DL SET 0: Control/Data Reuse 1 Control/ Data Frame Preamble Frame Preamble Frame Preamble Multi-frame Preamble DL SET 1 Master power rule DL SET 2 Slave power rule DL SET 3 Slave power rule DL SETB – E- MBS DL SET 0: Control/Data Reuse 1 Frame Control C/DC/D Broadcast Control SET0 Configuration Reuse N Configuration

12. Conclusion This proposal –Resolves the sub-frame availability problem –Resolves the allocation granularity problem –Resolves the max. allocation problem – Enhances the 802.16m Frame Structure capabilities for increased spectral efficiency, reduced intra-system interference and support for E-MBS Services Text for SSD – in the base contribution