Method and apparatus for handing-over a radio connection from on

Details Method and apparatus for handing-over a radio connection from on Method and apparatus for handing-over a radio connection from on

1987-03-03

1988-08-23

Lev, Robert

Telephonic communications

Audio message storage, retrieval, or synthesis

455 33, 370 18, H04Q 701

Patent

active

047657537

ABSTRACT:
Base radio stations are spatially arranged in a radio transmission system in accordance with a cellular system, separating the message transmission channels from adjacent base stations being effected either by using the frequency-division multiplex method or by using the code-division multiplex method or by using a combination of these multiplex methods. In appropriately large spatial distances the same set of channels can be repeated in a further radio cell. If a mobile radio station moves during the conversation from one radio cell into another, then it is necessary to hand-over the then existing radio connection. To avoid the necessity of using additional receivers in each base station and to prevent a repeated hand-over in the event of high co-channel interferences, the measurements used for hand-over decision are effected in the mobile radio station. As part of the method the reception quality of the co-channel message transmission channels of remote base stations are additionally measured in the mobile station during the existence of a radio connection to a near base station.

REFERENCES:
patent: 4472815 (1984-09-01), Gutleber
patent: 4475186 (1984-10-01), Gutleber
patent: 4475214 (1984-10-01), Gutleber
patent: 4514853 (1985-04-01), Gutleber
patent: 4528656 (1985-07-01), Morais
patent: 4542515 (1985-09-01), Gutleber
patent: 4670906 (1987-06-01), Thro
patent: 4697260 (1987-09-01), Gravel et al.
patent: 4723266 (1988-02-01), Perry

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