1. September 2002
doc.: IEEE /xxxr0
September 2002
Preparation of PAR and 5 Criterion addressing Japan’s 4.9-5GHz bands in September, 2002 Peter Ecclesine, Cisco Systems and Yasuhiko Inoue, NTT with much assistance from Kazuhiro Okanoue, NEC
Peter Ecclesine, Cisco Systems et al
Peter Ecclesine, Cisco Systems et al

2. September 2002
Background to date
11-02/480r3 Preparation of PAR and 5 Criterion addressing Japan’s 4.9-5GHz bands described situation in July, 2002
The Japanese Ministry published rules for the use of the bands on August 6th and 7th, 2002 and slides 4-13 of this presentation summarize the requirements
Discussion points and actions are presented in slides A draft PAR and Five Criterion accompany this presentation.
Peter Ecclesine, Cisco Systems et al

3. IEEE 802.11 paragraphs .11a 17.3.2.8.2 Regulatory Requirements
September 2002
IEEE paragraphs
.11a
Regulatory Requirements
Operating Channel Frequencies – minimum rate by channel
Transmit and receive in-band and out-of-band spurious emissions
Transmit power levels
Transmit spectrum mask – and EIRP limits for adjacent and co-adjacent channels
CCA Sensitivity
.11d
Country Information Element – Maximum Transmit Power Level – or EIRP in Japan’s 4.9GHz and 5.0GHz
9.9 Operation across Regulatory Domains – IBSS prohibition may need new attribute
Peter Ecclesine, Cisco Systems et al

4. September 2002
doc.: IEEE /xxxr0
September 2002
Channelization
4.90
4.92
4.94
4.96
4.98
5.00
[GHz]
5.03
5.04
5.06
5.08
5.091
[GHz]
Peter Ecclesine, Cisco Systems et al
Peter Ecclesine, Cisco Systems et al

5. Transmission equipment (1)
September 2002
Transmission equipment (1)
Frequency tolerance: +/- 20*10-6 or less
Maximum Transmission Power
250mW or less AND 50mW/MHz or less
Total transmission power is 250mW or less
Transmission power tolerance
Upper limit: +20%, Lower limit: -80%
fc+/-10MHz
Total power shall be 250mW or less fc
(=4.92, 4.94, 4.96, 4.98, 5.04, 5.06, 5.08 GHz)
Technical committee report,
Peter Ecclesine, Cisco Systems et al

6. Transmission equipment (2)
September 2002
Transmission equipment (2)
Adjacent channel emission
Maximum value of absolute radiated power at antenna is regulated.
-3dBm or less for fc+20-9 < f < fc+20+9 and fc-20-9 < f < fc-20+9 [MHz]
-18dBm or less for fc+40-9 < f < fc+40+9 and fc-40-9 < f < fc-40+9 [MHz]
fc+20MHz
fc-20MHz fc
fc+40MHz
fc-40MHz
9MHz
-3dBm or less
-18dBm or less
Technical committee report
Peter Ecclesine, Cisco Systems et al

7. Outband emission For 4.9GHz band system, EIRP should be
September 2002
Outband emission
For 4.9GHz band system, EIRP should be
15mW/MHz or less for 4880  frequency(f) < 4900MHz
15mW/MHz or less for 5000 < f  5020MHz
For 5.0GHz band system, EIRP should be
15mW/MHz or less for 5000  frequency(f) < 5020MHz
0.5mW/MHz or less for 5020  f < 5030MHz
0.5mW/MHz or less for 5091 < f  5100MHz
15mW/MHz or less for 5100 < f  5120MHz
Technical committee report
Peter Ecclesine, Cisco Systems et al

8. Upper limit of spurious
September 2002
Upper limit of spurious
For 4.9GHz band system, EIRP should be
2mW/MHz or less for frequency(f) < 4870MHz
2.5mW/MHz or less for 4870  f < 4880MHz and 5020 < f  5270MHz
0.2mW/MHz or less for 5270 < f  5342MHz
1mW/MHz or less for 5342MHz < f
For 5.0GHz band system, EIRP should be
2mW/MHz or less for frequency(f) < 4990MHz
2.5mW/MHz or less for 4990  f < 5000MHz and 5120 < f  5270MHz
Peter Ecclesine, Cisco Systems et al

9. Outband emission and spurious (graphical)
September 2002
Outband emission and spurious (graphical)
4.9GHz system
5.0GHz system
in-band
in-band
Peter Ecclesine, Cisco Systems et al

10. Transmission rate Transmission systems using 4.92, 4.94 and 5.04GHz
September 2002
Transmission rate
Transmission systems using 4.92, 4.94 and 5.04GHz
shall communicate at the rates of 5Mbps or more and have capability that can communicate at the rate of 10Mbps or more.
Transmission systems using 4.96, 4.98, 5.06 and 5.08GHz
shall communicate at the rates of 10Mbps or more and have capability that can communicate at the rate of 20Mbps or more.
Peter Ecclesine, Cisco Systems et al

11. September 2002
Carrier sense
Radio equipment shall have carrier sense mechanism for band sharing
Radio equipment shall quit its transmissions, when the equipment detects electrical filed intensity, E, transmitted from other equipment than its correspondent larger than
G: antenna gain (linear value)
Pt: transmission power [W]
n: 20 for 20MHz system
Radio equipment shall start its transmissions after carrier sense, except the following conditions:
equipment of which transmission and reception are controlled by other equipment and
transmissions within 4msec after the carrier sense.
Peter Ecclesine, Cisco Systems et al

12. Transmission antenna gain
September 2002
Transmission antenna gain
10dBi or less
When EIRP is less than power of 250mW transmission power plus 10dBi antenna gain, EIRP can be compensated by additional antenna gain.
Peter Ecclesine, Cisco Systems et al

13. September 2002
Other requirements
Subscriber shall communicate with only base stations (access points) and select frequency channel based on the base station control. (This means that ad-hoc mode (IBSS) is prohibited)
Following requirements are assumed;
base stations shall be licensed and
subscriber can be un-licensed. (802.11a compliant subscribers are categorized into un-licensed subscriber)
Peter Ecclesine, Cisco Systems et al

14. September 2002
Discussion Points
To confirm OFDM PHY can satisfy the new Japanese regulation
It could be OK, because technical committee considered the proposal based on IEEE a spec. However, it is important for IEEE to confirm the spec.
To decide channel IDs for GHz band
Current a defines channel ID for band GHz. It is important to define standardized channel ID for GHz band for interoperations.
To handle 4msec carrier sense rule
The Japanese regulation requires for all equipment to sense carrier every 4msec. The rule could make several impacts for IEEE spec such as
maximum PCF duration may be limited to 4msec
fragmentation length may be limited to 4msec
any other?
It is discussion point to be standardized or not.
To handle IBSS prohibit rule
It is discussion point to define new standardized mechanism or not.
(I think no new mechanisms will be required. The country and frequency information available in the MAC should be sufficient to prevent people from starting IBSS.)
Peter Ecclesine, Cisco Systems et al

15. September 2002
The WNG Motion
Move to have WNG move that the Working Group forward to the 802 exec for approval /564r0 PAR and /565r0 Five Criteria to extend , a and d to the Japanese 4.9GHz-5GHz bands
Peter Ecclesine, Cisco Systems et al

16. The WNG motion: to bring the following motion to the WG
September 2002
The WNG motion: to bring the following motion to the WG
Move to have the Working Group confirm /564r0 PAR and /565r0 Five Criteria to extend , a and d, as necessary, to the Japanese 4.9GHz-5GHz bands,
And to forward them for approval at the November 2002 IEEE 802 Plenary
Peter Ecclesine, Cisco Systems et al