July 2008 doc IEEE 802 19 080021 r

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 IEEE 802 Air-Interface Support for Co. Located Coexistence Date: 2008 -07 -07 Authors: Notice: This document has been prepared to assist IEEE 802. 19. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Submission 1 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 Abstract This presentation reviews the existing mechanisms in the latest IEEE 802. 16 / 802. 11 standard drafts, particularly “PSC-based co-located coexistence enhancement” in IEEE 802. 16 Rev 2 and “Co-located Interference Reporting” in IEEE 802. 11 v, and includes material that have been previously submitted. Submission 2 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 Outline • • Motivation 802. 16 Rev 2: PSC-based Co-located Coexistence 802. 11 v: co-located interference reporting Comparison Submission 3 Jing Zhu, Intel Corporation

July 2008 • Motivation: Multi-Radio User Terminal Problem: Interference between co-located radios – – • • doc. : IEEE 802. 19 -08/0021 r 2 small separation, e. g. <20 MHz between Wi. Fi/BT and Wi. MAX • • Bluetooth, Wi-Fi: 2. 4 Ghz Wi. MAX: 2. 3 -2. 4 Ghz, 2. 5 -2. 7 Ghz wideband interference, e. g. receiver blocking and OOB emission little isolation, e. g. 10~30 d. B isolation on a small form-factor device with no solution, co-located Tx or Rx of different technos is generally ok (as long as difference between Tx or Rx s Solution 1: RF domain (filtering, isolation, etc. ) – – costly, large in size, highly platform dependent not effective to wideband interference with small separation Solution 2: Time domain (TDM / MAC coordination) – – – universal, effective, and media independent enabled by packet switching and spectrum efficient PHY (MIMO-OFDM) but need air-interface support Air-Interface Design Considerations: • Data Rate • Coverage • Qo. S • Security • Power • Mobility • Multi-Radio Coexistence • … Submission 4 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 Typical Co-Located Coexistence (CLC) Activities 625 us Bluetooth SCO/e. SCO Tx Rx 1 2 3 4 5 6 3. 75 ms 15 ms (3 frames) varied Wi-Fi Beacon Rx Rx Rx 102. 4 ms Wi-Fi Data Tx 102. 4 ms Data ACK varied Problem Description: Co-located Coexistence (CLC) Activities are the Tx or/and Rx activities of one or multiple co-located radios that are not detectable over the air, but will impact the communications to / from another co-located radio. Submission 5 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 802. 16 Rev 2: PSC-based Co-Located Coexistence (CLC) • High level principles • PSC-based Mode 1 TDM-based CLC with Wi-Fi • PSC-based Mode 2 TDM-base CLC with Bluetooth e. SCO • UL Band AMC Reduce Interferences to Other Radios – Extends usage of power save class (PSC) to manage TDM between Wi. MAX and other technologies [PSC-based Mode 1, 2 + MAP Relevance] – Makes use of AMC permutation to increase spectrum separation – BS shall honor the configurations for the PSC in the MS MOB_SLP-REQ message, and does not gratuitously reject or modify the configuration. – MAP Relevance: defines that the listen and sleep interval follow the MAP relevance. For example, the UL subframe of each listening and sleep interval is shifted to the next frame compared to the DL subframe of that interval according to the MAP relevance. – BS shall not provide any MS UL allocation in the first frame of the listening interval – BS should provide any DL allocation as much as possible in the first frame of listening interval – BS shall, to all extent possible, populate the DL subframe such that DL allocations for all MS with Co-located-Coexistence-Enabled active PSC and with allocations in the current DL subframe, precede in time the allocations for other MS that do not need colocated coexistence support and are allocated in the same DL subframe. – either lowermost or uppermost frequencies will be used for UL band AMC subchannel allocations to achieve the maximum spectrum separation between 802. 16 radio and the colocated radio in the adjacent bands. Submission 6 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 PSC-based Mode 1 (w/ MAP Relevance) UL MAP Relevance Submission 7 “MAP Relevance” provides balanced DL/UL throughput with shorter duty cycle, which benefits the QOS. Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 PSC-based Mode 2 Submission 8 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 Co-Located-Coexistence-Enabled TLV • • • Bit #2 can set to 1 only if bit #0 is set to 1 and bit #1 is set to 0 Bit #4 shall be interpreted by the BS only if bit #3 is set to 1 Only one instance of this Co-located Coexistence-Enabled TLV should be added to MOB_SLP-REQ and MOB_SLP-RSP messages Submission 9 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 PSC Parameters and Sleeping / Absence Pattern Parameters Length (bits) Initial-sleep window 8 Listening-window 8 Final-sleep window base 10 Final-sleep window exponent 3 Initialsleep window (A) Listening Window (B) Final-sleep window base (C) Final-sleep window exponent (D) Sleeping Window (frames) Listening Window (frames) Type I min(Ax 2 i-1, Cx 2 D) B Type II A B Type III Cx 2 D 0 Maximum Initial Listening Window = Maximum Initial Sleep Window = 255 frames (1. 275 second) Submission 10 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 IEEE 802. 16 Other Relevant Activities • IEEE 802. 16 m – Multi-Radio Coexistence block performs functions to support concurrent operations of IEEE 802. 16 m and non-IEEE 802. 16 m radios collocated on the same mobile station. Call for contributions for system description document in September ‘ 08 Submission 11 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 802. 11 v – Co-located Interference Reporting • • STA AP Simple protocol enables terminal to indicate it is using several radios simultaneousl Co-located Interference Request Report allows terminal to indicate interference time characteristics, level, and othe Automatic reporting is supported, i. e. , whenever STA realize co-located interferenc AP can use reported information several ways, 1) it can schedule DL transmissions Other radio operation is started causing performance degradation Co-located Interference Report Other radio operation is stopped Co-located Interference Report Submission 12 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 802. 11 v: Co-located Interference Report Information Element Fields Submission Length (bytes) Element ID 1 Length 1 Report Period 1 Interference Level Accuracy / Interference Index 1 Interference Interval 4 Interference Burst Length 4 Interference Start Time 4 Interference Center Frequency 2 Interference Bandwidth 2 13 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 Comparison Pattern 802. 16 Rev 2 802. 11 v Periodic, Static 1 second 1 hour 5 ms 1 microsecond 1 16 12 bytes 21 bytes Yes No Maximum Duration Granularity Number of Activities Message Length CLC-Aware Transmission Behavior Submission 14 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 Further steps • Complementarities of proposed options: typical behavior/setting of device integrating 802. 11 v+802. 16 -Rev 2 add-ons for CLC Discussions • Interaction with other functionalities: – 802. 11 power save modes (U/S-APSD in 802. 11 e + U/S-PSMP in 802. 11 n) – …? Design use cases and scenarios • Synchronize timetables for availabilities of different standards and related certification / IOT in forums (WMF, BT SIG, WFA) • Other open issues Submission 15 Jing Zhu, Intel Corporation

July 2008 doc. : IEEE 802. 19 -08/0021 r 2 References • • • IEEE P 802. 16 Rev 2 D 5. 0 IEEE P 802. 11 v-D 2. 01 IEEE 802. 11 -08/0508 r 1 IEEE 802. 16 m-08/003 r 3 IEEE 802 Plenary Tutorial on “WPAN/WLAN/WWAN Multi-Radio Coexistence”, Nov. 13, 2007 Submission 16 Jing Zhu, Intel Corporation