IEEE 802.11
Wireless Access Method and Physical Specification

Title:	Proposal for France and Spain Frequency Hopping Patterns

Date:	March 11, 1996

Author:	Dean Kawaguchi

	Symbol Technologies, Inc.
	2145 Hamilton Ave
	San Jose, CA.  95125
	Telephone:  (408)369-2629
	FAX:  (408)369-2740
	email:  DeanK@psd.symbol.com

Introduction

This submission proposes frequency hopping patterns for France and Spain which uses the same algorithm adopted for the USA and ETSI as defined in submission 95/xxx.  The bandwidth allocations in these two countries are different from the general ETSI allocation and the basic pseudo-random hop sequence must be different from that defined for USA and ETSI.  The proposed hop patterns have the same minimum hop distance of 6 Mhz between consecutive hops as the USA and ETSI hop patterns.

France

The bandwidth allocation in France is 2446 - 2483.5 Mhz.  This allows for the use of 35 channels with centers from 2448 to 2482 Mhz with 1 Mhz between each channel. The equation for France would be as given below.

fx(i) = [b(i)+x] mod(35) + 48.

i	b(i)	i	b(i)	i	b(i)	
 1	17	13	31	25	15	
 2	 5	14	20	26	 3	
 3	18	15	29	27	11	
 4	32	16	22	28	30	
 5	23	17	12	29	24	
 6	 7	18	 6	30	 9	
 7	16	19	28	31	27	
 8	 4	20	14	32	19	
 9	13	21	25	33	 2	
10	33	22	 0	34	21	
11	26	23	 8	35	34	
12	10	24	 1			

Table 1.  Base Hopping Sequence b(i) for France

Spain

The bandwidth allocation in Spain is 2445 - 2475 Mhz.  This allows for the use of 27 channels with centers from 2447 to 2473 Mhz with 1 Mhz between each channel.  The equation for Spain would be as given below.

fx(i) = [b(i)+x] mod(27) + 47.

i	b(i)	i	b(i)	i	b(i)	
 1	13	10	19	19	14	
 2	 4	11	 8	20	 1	
 3	24	12	23	21	20	
 4	18	13	15	22	 7	
 5	 5	14	22	23	16	
 6	12	15	 9	24	 2	
 7	 3	16	21	25	11	
 8	10	17	 0	26	17	
 9	25	18	 6	27	26	

Table 2.  Base Hopping Sequence b(i) for Spain