Method and apparatus for receiving ring alert and paging data in an interference environment
First Claim
1. In a mobile exchange unit (MXU) having a plurality of assignable co-located transceivers capable of operating in a communication system having a plurality of cells, a method for locating a broadcast channel having ring alert and paging data for said MXU, said method comprising the steps of:
- evaluating said plurality of assignable co-located transceivers to determine the quantity presently in-use;
when none of said plurality of assignable co-located transceivers are in-use, directly monitoring a ring alert/paging channel containing a location of said broadcast channel; and
when at least one of said plurality of assignable co-located transceivers is in-use and interferes with said ring alert/paging channel, receiving a candidate hand-off list for said at least one of said plurality of assignable co-located transceivers in-use in one of said plurality of cells, said candidate hand-off list comprising said location of said broadcast channel and a list of others of said plurality of cells for hand-off determination.
3 Assignments
0 Petitions
Accused Products
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.
9 Citations
15 Claims
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1. In a mobile exchange unit (MXU) having a plurality of assignable co-located transceivers capable of operating in a communication system having a plurality of cells, a method for locating a broadcast channel having ring alert and paging data for said MXU, said method comprising the steps of:
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evaluating said plurality of assignable co-located transceivers to determine the quantity presently in-use; when none of said plurality of assignable co-located transceivers are in-use, directly monitoring a ring alert/paging channel containing a location of said broadcast channel; and when at least one of said plurality of assignable co-located transceivers is in-use and interferes with said ring alert/paging channel, receiving a candidate hand-off list for said at least one of said plurality of assignable co-located transceivers in-use in one of said plurality of cells, said candidate hand-off list comprising said location of said broadcast channel and a list of others of said plurality of cells for hand-off determination. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a communication system having a plurality of cells, a mobile exchange unit (MXU) for locating a broadcast channel having ring alert data and paging data for said MXU, comprising:
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a plurality of assignable co-located transceivers for directly monitoring a ring alert/paging channel containing a location of said broadcast channel when none of said plurality of assignable co-located transceivers are in-use, and for receiving a candidate hand-off list for said at least one of said plurality of assignable co-located transceivers in-use in one of said plurality of cells, said candidate hand-off list comprising said location of said broadcast channel and a list of others of said plurality of cells for hand-off determination when at least one of said plurality of assignable co-located transceivers is in-use and interferes with said ring alert/paging channel; and a controller coupled to said plurality of assignable co-located transceivers for evaluating said plurality of assignable co-located transceivers to determine the quantity presently in-use. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification