System and method for simplified handoff operation in a cellular

Details System and method for simplified handoff operation in a cellular System and method for simplified handoff operation in a cellular

1996-05-28

1999-05-11

Bost, Dwayne D.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455522, 455437, 455442, 455436, 375200, H04Q7/36;7/30

Patent

active

059038411

ABSTRACT:
The present invention provides a mobile communication cellular system using the CDMA transmission system which is capable of performing the handoff operation without control of a radio base station control apparatus. The first spread code specified for each sector cell is attended with the transmitted signal to a mobile station and the mobile station can receive all first spread codes from all sector cells at the time of call establishment, and the mobile station transmits the second spread code indicating the identification code of the mobile station. At the time of handoff operation, the radio base station selects the sector cell to be switched in accordance with a correlation value calculated based on received signal form the mobile station, and the mobile station selects the communication channel based on the information of the first spread codes having been received.

REFERENCES:
patent: 4704734 (1987-11-01), Menich et al.
patent: 5548616 (1996-08-01), Mucke et al.
patent: 5548813 (1996-08-01), Charas et al.
patent: 5559790 (1996-09-01), Yano et al.
patent: 5604766 (1997-02-01), Dohi et al.
patent: 5625876 (1997-04-01), Gilhousen et al.
patent: 5697057 (1997-12-01), Bursztejn et al.
An Overview of the Application of Code Division Multiple Access (CDMA) to Digital Cellular Systems and Personal Cellular Networks; May 21, 1992; Qualcomm Incorporated; pp. i-vi and 1-58.

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