Patent ID: 7633907
Filing Date: 2009-12-15
Classification: H04L,H04W,Y04S

Abstract:
1. A method of transmitting an information signal by radio between an access point and a station present in a short-range service area in a radio LAN system, comprising the steps of: setting up, as an access system between the access point and the station, a CDMA (Code Division Multiple Access) system using a plurality of spread codes for spreading the information signal; maintaining transmission power at a guaranteed level below spread semi-fixed level for the information signal; selecting, in accordance with a kind and an amount of the information signal, a frequency band and a frequency to be assigned to the information signal and a structure of a packet for transmitting the information signal; and transmitting the information signal in accordance with a transmission procedure; and storing a particular frequency band and a particular frequency to be used, and other information assigned to each kind of information in advance, in said step of selecting, the stored frequency band and the frequency matching with a kind and a quality of data as well as the processing procedure being read out, and each of voice and data being processed as the information signal based on readout information.