Method and apparatus for receiving ring alert and paging data in

Details Method and apparatus for receiving ring alert and paging data in Method and apparatus for receiving ring alert and paging data in

1996-09-03

1998-08-04

Eisenzopf, Reinhard J.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455 132, 455434, 455515, 455567, H04B 7185

Patent

active

057909512

ABSTRACT:
A communication system (100) includes satellites (102,104) and a mobile exchange unit (MXU) (120) for exchanging communication information with users. A satellite (102) generates synchronous timing frames requiring users operating through an MXU (120) to anticipate timing and frequency requirements to participate in communications. An MXU (120) must advance transmissions to a satellite (102) to insure transmissions arrive at satellite (102) within the proper synchronous receive window. Such advanced transmissions by MXU (120) interfere with reception of a ring alert/page transmission (130) which contains the location of broadcast channels (86) designating an incoming call or page data transmissions. The MXU (120) alternatively extracts a broadcast channel location from a candidate hand-off list being transmitted by a satellite (102) to in-use transceivers (310). The MXU 120 then distributes the location of the broadcast channel to those transceivers (310) presently not in-use.

REFERENCES:
patent: 4850033 (1989-07-01), Eizenhofer et al.
patent: 5539921 (1996-07-01), Tayloe
patent: 5570467 (1996-10-01), Sawyer

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