Abstract: When a subscriber record is moved from a first HLR to a second HLR that utilizes a different protocol, the wireless communication system sends two queries for location information for the mobile station, one to the first HLR and one to the second HLR, simultaneously. Two responses are received, one from each of the HLRs. The valid response is recorded in a separate table for future use. The invalid response is discarded. The next time a call comes in for the mobile station, the table is traversed to determine if the HLR has been updated for the mobile station. If so, the location request is sent only to the system in the table. If the table does not include information for the called mobile station, simultaneous queries are sent to the first and second HLRs.

Abstract: An apparatus, method and system are provided for hand-off of a communication session utilizing ISDN multiway capabilities, in which the communication session of a mobile unit on a first call path is transferred from a serving base station to a target base station. The preferred system includes a switch coupled to a serving base station and a target base station, wherein the serving base station includes instructions to request a second call path to the target base station and to request a multiway feature. The switch then establishes the second call path from the serving base station to the target base station via the switch, and combines the communication session of the first call path with the second call path to form a multiway communication session.

Abstract: When a subscriber record is moved from a first HLR to a second HLR that utilizes a different protocol, the wireless communication system sends two queries for location information for the mobile station, one to the first HLR and one to the second HLR, simultaneously. Two responses are received, one from each of the HLRs. The valid response is recorded in a separate table for future use. The invalid response is discarded. The next time a call comes in for the mobile station, the table is traversed to determine if the HLR has been updated for the mobile station. If so, the location request is sent only to the system in the table. If the table does not include information for the called mobile station, simultaneous queries are sent to the first and second HLRs.

Abstract: An apparatus, method and system are provided for hand-off of a communication session in a mobile wireless communication system, from the serving base station to a target base station, utilizing a shared directory number associated with a first terminal of the serving base station which is providing the communication session with the mobile unit through a first call path. The serving base station includes a second terminal having the shared directory number associated with the first terminal. A switch, coupled to the serving base station and to the target base station, is configured, upon reception of a message from the serving base station, to establish a second call path from the second terminal of the serving base station to the target base station, and to bridge the second call path with the communication session of the first call path to form a multiway communication session, with the multiway communication session including a bridged call path to the target base station.

Abstract: An apparatus, method and system are provided for hand-off of a communication session from a serving base station to a target base station. The preferred system includes a switch coupled to the serving base station and to the target base station. Respective first and second terminals at the serving and target base station share the same directory number, with the first terminal of the serving base station providing the communication session with the mobile unit. For a hand-off, the target base station transmits a request designating the shared directory number to the switch. Upon reception of the request, the switch bridges the target base station, through a bridged call path, into the communication session, through a second terminal of the target base station having the shared directory number, to form a three-way communication session.

Abstract: An apparatus, method and system are provided for hand-off of a communication session in a mobile wireless communication system, from the serving base station to a target base station, utilizing a shared directory number associated with a first terminal of the serving base station which is providing the communication session with the mobile unit through a first call path. The serving base station includes a second terminal having the shared directory number associated with the first terminal. A switch, coupled to the serving base station and to the target base station, is configured, upon reception of a message from the serving base station, to establish a second call path from the second terminal of the serving base station to the target base station, and to bridge the second call path with the communication session of the first call path to form a multiway communication session, with the multiway communication session including a bridged call path to the target base station.

Abstract: An apparatus, method and system are provided for hand-off of a communication session from a serving base station to a target base station. The preferred system includes a switch coupled to the serving base station and to the target base station. Respective first and second terminals at the serving and target base station share the same directory number, with the first terminal of the serving base station providing the communication session with the mobile unit. For a hand-off, the target base station transmits a request designating the shared directory number to the switch. Upon reception of the request, the switch bridges the target base station, through a bridged call path, into the communication session, through a second terminal of the target base station having the shared directory number, to form a three-way communication session.

Abstract: An apparatus, method and system are provided for hand-off of a communication session utilizing ISDN multiway capabilities, in which the communication session of a mobile unit on a first call path is transferred from a serving base station to a target base station. The preferred system includes a switch coupled to a serving base station and a target base station, wherein the serving base station includes instructions to request a second call path to the target base station and to request a multiway feature. The switch then establishes the second call path from the serving base station to the target base station via the switch, and combines the communication session of the first call path with the second call path to form a multiway communication session.

Abstract: An apparatus, method and system are provided for hand-off of a communication session utilizing directed call pick up with barge-in, in which the communication session of a mobile unit is transferred from a serving base station to a target base station. The preferred system includes a switch coupled to a serving base station and. a target base station, wherein the target base station includes instructions to generate a barge-in call path to a switch. The switch includes instructions to connect the barge-in call path to the communication session of the mobile unit to form a reverse three-way communication session. Following a provision for the mobile unit to communicate with the target base station for continuation of the communication session through the barge-in call path, the serving base station disconnects from the communication session. The barge-in call path.

Abstract: A method for handling interswitch handovers in a personal communication services (PCS) system where the original switching system that hosts the radio port control unit (RPCU) that first serves the call is designated as the anchor switch. The anchor switch maintains this status for the duration of the call and is always responsible for setting up the three-way connection to effectuate the interswitch handover regardless of how many additional new switching systems host RPCUs that serve the call as the mobile station moves through the system. The additional new switching systems hosting the new RPCUs always communicate with the anchor switch and the call is always routed from the anchor switch directly to the switching system hosting the RPCU serving the mobile station. Intermediate switches are dropped from the connection when the mobile station exits the areas they serve thereby eliminating the need to maintain connections through prior switching systems.