US 6,549,787 B1 · System and method for use in an MSC-BS interface for supporting an access state handoff

Abstract

There is disclosed, for use in a wireless network comprising a plurality of base stations communicating with mobile devices, an apparatus for establishing a call connection between a mobile device and one of the base stations (BS). The apparatus comprises a message control processor that receives from one or more base stations cell information messages transmitted by the mobile station. Each cell information message contains cell ID data identifying the base station(s) from which the mobile station is receiving wireless messages. If the message control processor receives a first cell information message from a first BS and subsequently receives a second cell information message from a second BS, the message control processor continues to process only the first cell information message if the cell ID data in the second cell information message is the same as the cell ID data in the first cell information message. However, if the cell ID data in the second cell information message is different than the cell ID data in the first cell information message, the message control processor aborts processing of the first cell information message and begins processing the second cell information message.

Claims20

Dependent claims

For use in a wireless network comprising a plurality of base stations capable of communicating with a plurality of mobile devices, an apparatus for establishing a call connection between a first one of said plurality of mobile devices and one of said plurality of base stations, said apparatus comprising:

a message control processor for establishing said call connection, said message control processor capable of receiving from said plurality of base stations cell information messages generated by said first mobile station, each of said cell information messages comprising cell identification (ID) data identifying ones of said plurality of base stations from which said first mobile station is receiving wireless messages, wherein said message control processor, in response to receipt of a first cell information message from a first base station and receipt of a subsequent second cell information message from a second base station, compares the cell ID data within said first and second cell information messages, selectively processes only one of said first and second cell information messages based on the comparison of the cell ID data within said first and second cell information messages and transmits to only one of said first and second base stations a resource allocation message capable of establishing said call connection with said first mobile station.

A wireless network comprising:

a plurality of base stations capable of communicating with a plurality of mobile devices;
and
a message control processor for establishing a call connection between a first one of said plurality of mobile devices and one of said plurality of base stations, said message control processor capable of receiving from said plurality of base stations cell information messages generated by said first mobile station, each of said cell information messages comprising cell identification (ID) data identifying ones of said plurality of base stations from which said first mobile station is receiving wireless messages, wherein said message control processor, in response to receipt of a first cell information message from a first base station and receipt of a subsequent second cell information message from a second base station, compares the cell ID data within said first and second cell information messages, selectively processes only one of said first and second cell information messages based on the comparison of the cell ID data within said first and second cell information messages and transmits to only one of said first and second base stations a resource allocation message capable of establishing said call connection with said first mobile station.

For use in a wireless network comprising a plurality of base stations capable of communicating with a plurality of mobile devices, a method of establishing a call connection between a first one of the plurality of mobile devices and one of the plurality of base stations, the method comprising the steps of:

receiving from a first base station a first cell information message generated by the first mobile station, the cell information message comprising first cell identification (ID) data identifying ones of the plurality of base stations from which the first mobile station is receiving wireless messages;
after receipt of the first cell information message, receiving from a second base station a second cell information message generated by the first mobile station, the second cell information message comprising second cell identification (ID) data identifying ones of the plurality of base stations from which the first mobile station is receiving wireless messages;
comparing the first cell ID data and the second cell ID data;
and
processing only one of the first and second cell information messages based on the comparison of the first and second cell ID data and transmitting to only one of the first and second base stations a resource allocation message capable of establishing the call connection with the first mobile station.

2 more elements

Dependencies are inferred from the claim text.

System and method for use in an MSC-BS interface for supporting an access state handoff

Life of this patent

System and method for use in an MSC-BS interface for supporting an access state handoff

Life of this patent

Abstract

Claims20