1. Updated China's 5GHz Spectrum Regulation
January 2010
doc.: IEEE /0084r3
Updated China's 5GHz Spectrum Regulation
Date:
Authors:
Brian Hart, Cisco Systems

2. Abstract
The latest update of China’s 5 GHz spectrum regulation is introduced, and the 11ac channelization scheme for China is analyzed.

3. Background
In China, the total bandwidth available for ac in 5 GHz was only 125 MHz (5,725 ~ 5,850 MHz).
How to efficiently use this band was a critical issue for ac implementation in China.
R3.1.E in the 11ac spec framework points out that the 11ac draft specification shall include support for an efficient channelization in China’s (5,725 ~ 5,850 MHz) spectrum.
Although there are intensive discussions on this issue (esp. during IEEE ac meetings), there is still no appropriate solution.

4. New progress of China’s 5GHz spectrum regulation
June 2010
doc.: IEEE /xxxxr0
New progress of China’s 5GHz spectrum regulation
Recently, China’s spectrum regulator, State Radio Regulatory Commission (SRRC), released a new spectrum (5,150 ~ 5,350 MHz) for wireless access systems, including Wireless LAN.
The major requirements for the new spectrum are as follows.
Frequency range: 5,150 ~ 5,350 MHz
Transmit power: 200 mW (EIRP)
Maximum PSD: 10 dBm/MHz (EIRP)
Out-of-band emission: -80 dBm/Hz (EIRP)
For devices working in 5,250 ~ 5,350 MHz
DFS shall be used.
If TPC is not used, the maximum TX power and PSD shall be reduced by 3 dB.
The above requirements are basically same as ITU-R recommendation and European regulation. For more details, please refer to SRRC’s Document [2012]620.
Now, the total spectrum of ac in China is up to 315 MHz.
5,150 ~ 5,350 MHz
5,725 ~ 5,850 MHz
Brian Hart, Cisco Systems

5. 802.11ac available spectrum in different regionsUS
MHz
5150
5350
5470
5725
5850
Europe Japan
MHz
5150
5350
5470
5725
China
MHz
5150
5350
5725
5850

6. 802.11ac channelization for China
June 2010
doc.: IEEE /xxxxr0
802.11ac channelization for China
To keep compatibility and coexistence, ac channels for China should be aligned with those in other regions.
China US
Europe Japan
Brian Hart, Cisco Systems

7. Summary
China opens up a new 5GHz frequency band (5,150 ~ 5,350 MHz ), so that the total ac available spectrum is up to 315 MHz.
An ac channelization for China is proposed to maintain compatibility and coexistence of ac devices throughout the world.

8. References
ac-proposed-text-for-tgac-draft-0-1-comment-cid-812-on-china-channelization
ac-channelization-for-china-s-spectrum
ac-120-mhz-phy-transmission
ac-rf-feasibility-120-mhz-channelization
ac-proposed-specification-framework-for-tgac