1. China WPAN mmWave Liaison w/ 802.11
doc.: IEEE /1034r0
China WPAN mmWave Liaison w/
Date:
Authors:
Peng Xiaoming, I2R

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

3. Overview of China WPAN (CWPAN)
doc.: IEEE /1034r0
Overview of China WPAN (CWPAN)
Chinese Standards Organization
China Wireless Personal Area Network (CWPAN) working group was launched on December The meeting is held quarterly. (
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

4. 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

5. 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 –
18th -21th
Technical proposal presentation
Received 34 technical proposals
22th-23th
Deadline to accept new technical proposals ….
Technical specification submit for approval

6. Introduction
The released 60GHz spectrum in China only has 5GHz bandwidth, corresponding to channel 2 & 3 used in IEEE ad/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

7. 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 ad / WiGig device.

8. Motivation
CWPAN intends to provide design to support dynamic bandwidth
Backward compatibility: to keep the backward compatibility to IEEE ad/WiGig device
Coexistence: to ensure the coexistence between IEEE ad / 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.

9. 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

10. 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

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

12. 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.

13. Background
Around
60 GHz
45 GHz

14. 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.

15. + 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:

16. 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 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 GHz
A Q-band ( GHz) will be used for Q-LINK PAN
Licensed 2 X GHz band pair for Q-LINKPAN-L and unlicensed 2.24 GHz band for Q-LINKPAN-S

17. doc.: IEEE /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 ad networks
Minimal change in IEEE ad
CWPAN has officially submitted the request of the spectrum allocation in GHz in China for Q-LINKPAN
Peng Xiaoming, I2R

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

19. THANK YOU!!!