Discussion of Control Channel Power Control Design IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE S802.16m-09/2846 Date Submitted:

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Discussion of Control Channel Power Control Design IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE S802.16m-09/2846 Date Submitted: Source: Rongzhen Yang, Xinrong Wang, Hongmei Sun, Yuan Zhu, Yi Hsuan Alexei Davydov, Hujun Yin, Yang-seok Choi Intel Corporation Jeongho Park Samsung Electronics Wookbong Lee LG Electronics Wilson Tim Motorola Inc. Venue:. RE: Comments on P802.16m/D3 Purpose: To support power control of control channel design in contribution C802.16m-09/2846 Notice: This document does not represent the agreed views of the IEEE 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 Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and. Further information is located at and.

Fixed Rate and Variable Rate Control Channels Fixed Rate Control Channel: –HARQ Feedback –Synchronized Ranging –P-FBCH –Bandwidth Request Power Control for Fixed Rate Control Channel: The single SINR Target signaled by ABS Variable Rate Control Channel: S-FBCH –Special power control design for the balance between flexibility and signaling overhead;

HARQ Feedback SNR per Target PER of 1% for ACK->NCK SNR per Target PER of 0.1% for NCK->ACK PB3, 6 Users = = -0.7 VA60, 6 Users = = 0.4 VA120, 6 Users = = 0.5 VA350, 6 Users = = 0.8 (simulation results in C80216m-09_0169, Transmit power per tone is 4.7dB boosting, 1x2) Value Range for HARQ Feedback: -3.5 dB ~ 4 dB with 0.5 dB step Default value 2 dB can meet the requirement for 1x2 Minimum -3.5 dB for more receive antennas or better receiver algorithm 4 dB target value for the worse case So, the SINR_Target_HARQ is defined as: “SINR_Target_HARQ is the HARQ feedback channel target SINR value broadcasted by the ABS. It has 4 bits to represent the value among {-3.5, -3, -2.5, -2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4} dB”

Synchronized Ranging Value Range for Synchronized Ranging: -9 dB ~ -1.5 dB with 0.5 dB step –Default value -3 dB can meet the requirement for 1x2 –Minimum -9 dB for more receive antennas or better receiver algorithm –-1.5 dB target value for the worse case So, the SINR_Target_SyncRanging is defined as: “SINR_Target_SyncRanging is the synchronized channel target SINR value broadcasted by the ABS. It has 4 bits to represent the value among {-9, -8.5, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2, -1.5} dB” One UserTwo Users (0dB SIR) PB3-6.3 dB-3 dB VA350-6 dB-2 dB Table: SNR per Target Missed Detection 1%

P-FBCH SNR per Target PER 1% PB3-1.6 dB VA1200 dB VA3503 dB or 0 dB* (simulation results in C80216m-09_0729) * By the advanced non-coherent receiver (from Qinghua,Yuan) Value Range for P-FBCH: -4.5 dB ~ 3 dB with 0.5 dB step –Default value 0 dB can meet the requirement for 1x2 –Minimum -4.5 dB for more receive antennas or better receiver algorithm –3 dB target value for the worse case So, the SINR_Target_PFBCH is defined as: “SINR_Target_PFBCH is the P-FBCH target SINR value broadcasted by the ABS. It has 4 bits to represent the value among {-4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3} dB”

Bandwidth Request Simulation Result in C80216m-09_1316 is: –0.5 dB SNR per Target PER 1% –Simulation condition: 1x2, PB3 Value Range for P-FBCH: -4.5 dB ~ 3 dB with 0.5 dB step –Default value 0.5 dB can meet the requirement for 1x2 –Minimum -4.5 dB for more receive antennas or better receiver algorithm –3 dB target value for the worse case So, the SINR_Target_BWRequest is defined as: “SINR_Target_BWRequest is the bandwidth request channel target SINR value broadcasted by the ABS. It has 4 bits to represent the value among {- 4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3} dB”

Variable Rate Control Channel: S-FBCH 18 levels of coding rate: l=7~24 It is obviously un-reasonable to define 18 parameters with big signaling overhead; Reference (D3):

S-FBCH Power Control Draft Design Only 2 signaled parameters are required for S-FBCH uplink power control –SINR_Target_SFBCH_Base is used to signal –SINR_Target_SFBCH_Delta is used to signal The design provides the tradeoff between the flexibility and signaling overhead; Where is base SINR target value signaled by SINR_Target_SFBCH_BASE; is differential SINR target value signaled by SINR_Target_SFBCH_Delta; is S-FBCH payload information bits number as defined in ; is minimum S-FBCH payload information bits number ( = 7 ) as defined in ;

S-FBCH Simulation Results Study is defined as 4 bits to represent {-4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, - 0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3} dB, default value: 1.5 dB is defined as 3 bits to represent {0, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26}, default value: 0.24 dB 7 bits12 bits24 bitsSFBCH Delta PB31.5 dB2.7 dB5.7 dB0.247 dB VA dB4.1 dB7.1 dB0.235 dB VA dB4.4 dB7.4 dB0.230 dB (simulation results in C80216m-09_0875r1, Transmit power of pilot is 3dB boosting, 1x2) Table: SNR per Data Target PER of 1%

Linear Approaching of S-FBCH Target Value The SFBCH Delta are very close for different speeds The differences for SFBCH Base at different speeds can be compensated by offset value Offset Control or better receiver implementation;

Summary of Control Channel Power Control Fixed Rate Control Channel (4 bits each): SINR_Target_HARQ: {-3.5, -3, -2.5, -2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4} dB, default value 2 dB SINR_Target_SyncRanging: {-9, -8.5, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.5, - 3, -2.5, -2, -1.5} dB, default value: -3 dB SINR_Target_PFBCH: {-4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3} dB, default value 0 dB SINR_Target_BWRequest: {-4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3} dB, default value 0.5 dB S-FBCH (7 bits): SFBCH Base : 4 bits = {-4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3} dB, default value: 1.5 dB SFBCH Delta : 3 bits = {0, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26}, default value: 0.24 dB

Recommendation The related text in C80216m-09/2846 (or its latest version) is recommended to be adopt in to AWD D3.