Text Proposal of PC-A-MAP IE Assignment in IEEE802. 16 D3 (16. 3. 6. 5 IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/2859 Date Submitted: 2009-12-30 Source: Jeongho Park, Hokyu Choi Voice: +82-31-279-7528 E-mail: jeongho.jh.park@samsung.com Samsung Electronics Co., Ltd. 416 Maetan-3, Suwon, 443-770, Korea Re: IEEE 802.16-09/0057, “IEEE 802.16 Working Group Letter Ballot Recirc #30a: Announcement” Base Contribution: None Purpose: Discussion and Approval 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: <http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and <http://standards.ieee.org/guides/opman/sect6.html#6.3>. Further information is located at <http://standards.ieee.org/board/pat/pat-material.html> and <http://standards.ieee.org/board/pat >.

UL Transmit Power Control (TPC) Current AWD defines PC-A-MAP IE This IE is TPC command for TX power correction PC-A-MAP IE has 2 bit-field -0.5dB, 0dB, 0.5dB, 1.0dB AMS should interpret this IE as relative value to current tone power

Closed Loop Power Control In FDD Systems Active AMS should keep track of short term channel at least For Control Channels Guarantee of Target SINR is important Guarantee of Target PER is important Periodic Tx power update by using PC-A-MAP would prevent abrupt huge Tx power change

How to Assign PC-A-MAP? Explicit Way Implicit Way FBCH Alloc IE can include a field which indicates the PC-A-MAP location to a MS The field size is dependent on total number of channels per subframes  overhead increase Implicit Way By coupling with assignment of UL reference signal, additional explicit assignment might not be necessary One good reference is FBCH allocation  No overhead increase Suggestion is “Implicit Assignment of PC-A-MAP”

FBCH is assigned to AMS in mandatory Implicit Assignment FBCH is assigned to AMS in mandatory We can exploit FBCH allocation order for PC-A-MAP allocation BS can estimate UL SINR based on FBCH PC-A-MAP field is set based on estimated UL SINR PC-A-MAP location can be coupled with FBCH allocation

Answers to Concerns on Implicit Way Period of PC-A-MAP Same period with FBCH period is not inappropriate? The more frequent PC-A-MAP than FBCH would be meaningless if there is no UL reference signal for UL SINR estimation Therefore, same period with FBCH is what PC-A-MAP can have at most if there is not any other UL reference signal The less frequent PC-A-MAP than FBCH would result in lack of information for power control on FBCH transmission Overhead PC-A-MAP IE of the proposal This proposal request all MSs who transmits FBCH to be assigned PC-A-MAP Considering 320 users per sector and FDD frame with 8 subframes, 40 users per subframe need to be assigned PC-A-MAP This results in total 160 tones per subframe ( 4 tones x 4 users ) which would occupy less than 1.5 LRU

Assignment Rule Example (FDD) ABS assigns FBCH to AMS#1 in UL subframe#3 with 5ms Then, PC-A-MAP is automatically assigned in DL #7 Exact location in DL#7 is determined by the order of AMS#1’s FBCH in UL subframe#3

Assignment Rule Suggestion FDD Systems TDD Systems TBD Frame index Subframe index Channel index Note FBCH Location i m q PC-A-MAP IE Location i + floor[ (m+P/2)/N ] (floor(m+P/2)) mod N P : period of FBCH (subframe) N : # of subframes in a frame

Proposed Text Insert the following text and Table XX in page 394, line 56 of IEEEP802.16m/D3 (under the Table 810- PC-A-MAP IE format) For FDD systems, when FBCH is assigned to AMS, the corresponding PC-A-MAP IE to the AMS automatically follows the assignment location defined in Table XX. In the table, P is allocation period of FBCH by Feedback Allocation A-MAP IE (refer to Table 818-Feedback Allocation A-MAP IE) in terms of subframe. And N is the available number of subframes in a frame. For TDD systems, when FBCH is assigned to AMS, the corresponding PC-A-MAP automatically follows the assignment location defined in TBD. Table XX- PC-A-MAP IE Location in FDD systems Frame index Subframe index Channel/IE index FBCH Location i m q PC-A-MAP IE Location i + floor[ (m+P/2)/N ] (floor(m+P/2)) mod N