China WPAN mmWave Liaison w/ 802.11 doc.: IEEE 802.11-11/1034r0 China WPAN mmWave Liaison w/ 802.11 Date: 2011-07-19 Authors: Peng Xiaoming, I2R

Outline CWPAN Structure CWPAN 60G update CWPAN Q-LINKPAN update Conclusion

Overview of China WPAN (CWPAN) doc.: IEEE 802.11-11/1034r0 Overview of China WPAN (CWPAN) Chinese Standards Organization China Wireless Personal Area Network (CWPAN) working group was launched on December 2005. The meeting is held quarterly. (www.nits.gov.cn/wpan) CWPAN 60GHz project group (PG4) on “Gigabit Wireless Network in 60GHz bands” was launched in March 2010. CWPAN Q-LINKPAN study group (SG5) on “Gigabit Wireless Network in 40-50GHz bands” was launched in Sept 2010. Peng Xiaoming, I2R

CWPAN Meeting update The past CWPAN meeting (21th) was held in Neimenggu, China in June 21-23, 2011 There were 22 participants from 14 organizations Received 12 technical proposals in PG4 (60GHz) Received 2 proposals in SG5 (Q-LINKPAN (40-50GHz)) The next CWPAN meeting (22th) will be held in Chengdu, China in Oct 24-25, 2011

Overview of CWPAN PG4 – 60GHz Objective The 60GHz Project Group for China Wireless Personal Area Networks (C-WPANs) is to define a project for a PHY, MAC operating in China’s unlicensed 60GHz spectrum Timeline Time Meeting Schedule Remarks 2010.3 16th PG work plan Completed 2010.6 17th Define Functional Requirement Document, Issue CFP 2010.9 – 2011.6 18th -21th Technical proposal presentation Received 34 technical proposals 2011.9-2011.12 22th-23th Deadline to accept new technical proposals 2012.12 …. Technical specification submit for approval

Introduction The released 60GHz spectrum in China only has 5GHz bandwidth, corresponding to channel 2 & 3 used in IEEE 802.11ad/WiGig. According to CWPAN 60GHz functional requirement document, it is required to support at least 3 logical channels for CWPAN network. USA, Canada, Korea Europe Japan China Australia

Proposed Channelization for CWPAN In view of the available bandwidth in China and the requirement of CWPAN networking, it has been proposed the following channelization for consideration in CWPAN Co-existence When CWPAN device operates in small bands, there is a potential co-existence problem between CWPAN device and IEEE 802.11ad / WiGig device.

Motivation CWPAN intends to provide design to support dynamic bandwidth Backward compatibility: to keep the backward compatibility to IEEE 802.11ad/WiGig device Coexistence: to ensure the coexistence between IEEE 802.11ad / WiGig device and CWPAN device PHY design: to reuse the PHY design for large bandwidth and reuse or change the PHY design for small bandwidth MAC design: There is a need to add in MAC protocols in CWPAN to split a large band into two small bands for operations of 2 networks and to expand a small band in network operation with an adjacent vacant small band into a large band.

CWPAN MAC Protocols – to support dynamic bandwidth When a new CWPAN device (to become AP/PCP2) requests an existing CWPAN network (AP/PCP 1) to be split to a smaller band from a large band L1, it first joins the existing CWPAN network and requests to split the band After splitting, AP/PCP 1 and AP/PCP 2 each creates a quiet period (QP) in their respective networks and sends out quasi-omni beacons during notification period (NP) respectively. AP/PCP 2 synchronizes with AP/PCP 1 by receiving the time stamp in AP/PCP 1’s quasi-omni beacons during NP1. Non-AP/non-PCP devices associated to AP/PCP 1 continue their packet transmissions in small band network in S5 after tuning in and receiving the quasi-omni beacon frames sent out by AP/PCP 1 in small band. Non-AP/non-PCP devices associated to AP/PCP 2 start their operation in small band S6. When one network operating in small band ceases its operation, another network can proceed to expand its bandwidth from its small band to the large band after detecting it. Channel Revised Frame Structure in Dynamic Bandwidth MAC protocol for CWPAN network

Quasi-Omni Beacon Format used in NP It uses the standard Beacon format except the following Body of the DBand Beacon frame Beacon Interval Control Use two reserved bits to indicate CWPAN Channel Bandwidth Beacon Format Beacon Interval Control Field

Minimal Change in IEEE 802.11ad For co-existence between IEEE 802.11ad and CWPAN, there is a minimal change in IEEE 802.11ad Request to use two reserved bits in Beacon Interval Control Field to communicate for CWPAN Channel Bandwidth Beacon Interval Control Field

Overview of CWPAN SG5 – 40~50GHz In 2009, a big fundamental research project supported by the MOST of China on CMOS Millimeter Wave and THz ICs was approved, the key application of the ICs is aimed for millimeter wave wireless communications. Southeast University (SEU) delivered the proposals to CWPAN working group and the State Radio Regulatory Commission to develop the China mmW standard Q-LINKPAN which can be used both in short range and point-to-point (Q-Band + LINK +PAN). A study group (SG5) was then set up under CWPAN in Sept 2010 to start the technical investigation on Q-LINKPAN. The State Radio Regulatory Commission is now considering the application of frequency band for Q-LINKPAN.

Background Around 60 GHz 45 GHz

The Advantages of Q－LINKPAN For short range wireless communications, the cost of Q-LINKPAN products will be only around 70% of the cost of 60GHz products. Actually, for the same performance, 90nm CMOS process is necessary for 60GHz but 130nm CMOS process for Q-LINKPAN. 60GHz systems couldn’t be used for long distance point-to-point high data rate communication due to the atomspheric absorption peak at 60GHz band (~20dB/km). The low atomspheric absorption loss (~1dB/km) makes the Q- LINKPAN be easily used for point-to-point high data rate communication by high gain antennas. For the same performance, the power consumption of Q-LINKPAN systems will be around 80% of 60GHz systems. Actually, for same coverage, the power required for Q-LINKPAN will be deceased around 20% compared with 60GHz systems. For long distance point-to-point high data rate communication, the cost of Q- LINKPAN products will be only around 50% of the cost of E-band products.

+ Roadmap of Q-LINKPAN Q-LINKPAN Demo System Study Group Standard Q-LINKPAN Rx Q-LINKPAN Tx PLL + RF Module Baseband Demo System Tape out Prototype & Production: Draft Study Group 2009 2010 2011 2012 2013 2014 Transmitter Receiver PLL Transceiver BB ASIC/BB SoC Standard Q-LINKPAN Products Standardization:

Request of Spectrum Allocation in 40-50GHz In April 2011, Prof. Hong Wei and the team reported to State Radio Regulatory Commission on the progress of CWPAN SG5 Q-LINKPAN and suggested the following options of spectrum allocation in 40-50 GHz Option 1: 40GHz – 45GHz Option 2: 40GHz – 47GHz Option 3: 45GHz – 50GHz In July 2011, CWPAN plans to submit the official request to State Radio Regulatory Commission for spectrum allocation in 40-50 GHz A Q-band (40-45.5 GHz) will be used for Q-LINK PAN Licensed 2 X 1.568 GHz band pair for Q-LINKPAN-L and unlicensed 2.24 GHz band for Q-LINKPAN-S

doc.: IEEE 802.11-11/1034r0 Conclusions CWPAN has made significant progress in PG 4 (60GHz) and SG 5 (40~50GHz) in the last Quarter CWPAN Co-existence proposal ensures the co-existence between CWPAN and IEEE 802.11ad networks Minimal change in IEEE 802.11ad CWPAN has officially submitted the request of the spectrum allocation in 40-50 GHz in China for Q-LINKPAN Peng Xiaoming, I2R

Reference NITS-10-45-02-WPAN(60G) – Channelization for CWPAN 60GHz NITS-10-46-00-WPAN(60G) – Evaluation of PLL design for Dynamic Bandwidth NITS-10-47-00-WPAN(60G) – Evaluation of ADC/DAC design for Dynamic Bandwidth NITS-11-018-00-WPAN(60G) - A Design Consideration for Dynamic Bandwidth for CWPAN NITS-11-027-00-WPAN(60G) - Dynamic Bandwidth Control MAC Protocols for Co-existence of Networks NITS-11-014-00-WPAN(SG5) – Overview of Q-LINKPAN

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