Access method, mobile station and base station for CDMA mobile c

Details Access method, mobile station and base station for CDMA mobile c Access method, mobile station and base station for CDMA mobile c

1996-09-17

2000-06-20

Patel, Ajit

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

H04B 7216

Patent

active

060785721

ABSTRACT:
In a CDMA mobile communication system, for realizing a multiple-access, a common reverse channel 10 is divided into an access channel 10A and a message channel 10B. When data (packet) to be transmitted occurs in any mobile station 1-4, mobile station having data to be transmitted transmits a transmission request signal including information, such as packet size or the like, by using the access channel 10A. In contrast, base station 30 transmits a transmission permission signal, which designates a transmission timing of data and a spreading code to be used as transmitting, on the basis of the state of utilization of message channel 10B and the state of occurrence of data. Mobile stations 1-4 transmits data in accordance with the spreading code and the transmission timing which are designated from base station 30.

REFERENCES:
patent: 5384777 (1995-01-01), Ahmadi et al.
patent: 5420851 (1995-05-01), Seshadri et al.
patent: 5521925 (1996-05-01), Merakos et al.
patent: 5625629 (1997-04-01), Wenk
patent: 5633875 (1997-05-01), Hershey et al.

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