Method and apparatus for providing control handoff in a cellular telecommunications system
First Claim
Patent Images
1. A control method in a cellular telecommunications system, comprising the steps of:
- a user mobile station relays ongoing user communications signals via at least one of a plurality of base station relays ongoing user communications signals via at least one of a plurality of base stations;
said base stations further relay said user communications signals via at least one of a plurality of mobile exchanges to and from another system user;
executing an inter-exchange soft handoff between a first and a second mobile exchange;
having user communications control and signal diversity combining functions involved with the handoff at the first mobile exchange;
executing a control handoff of said user communications control and signal diversity combining functions from said first mobile exchange to said second mobile exchange; and
maintaining said first mobile exchange as a switching point for digital transmission connections between said other system user and said second mobile exchange.
2 Assignments
0 Petitions
Accused Products
Abstract
In a cellular telecommunications system having mobile exchanges, base stations and user mobile stations roaming in the system, the mobile exchanges are arranged to provide inter-exchange soft handoff with diversity combining. The mobile exchanges further are arranged to provide for control handoff, wherein user communications control handoff, wherein user communications control and signal diversity combining functions involved with the user communications are handed off from a first mobile exchange to a second mobile exchange.
-
Citations
8 Claims
-
1. A control method in a cellular telecommunications system, comprising the steps of:
-
a user mobile station relays ongoing user communications signals via at least one of a plurality of base station relays ongoing user communications signals via at least one of a plurality of base stations; said base stations further relay said user communications signals via at least one of a plurality of mobile exchanges to and from another system user;
executing an inter-exchange soft handoff between a first and a second mobile exchange;having user communications control and signal diversity combining functions involved with the handoff at the first mobile exchange; executing a control handoff of said user communications control and signal diversity combining functions from said first mobile exchange to said second mobile exchange; and maintaining said first mobile exchange as a switching point for digital transmission connections between said other system user and said second mobile exchange. - View Dependent Claims (2, 3, 4)
-
-
5. A cellular telecommunications system, comprising:
-
a plurality of mobile exchanges, a plurality of bases stations, and a plurality of user mobile stations roaming in the system, each of the mobile exchanges comprising means for inter-exchange soft handoff of ongoing user communications with diversity combining, said mobile exchanges each further comprising means for control handoff, wherein user communications control and signal diversity combining functions involved with said ongoing user communications are arranged to be handed off in a control handoff from a first mobile exchange to a second mobile exchange, the first exchange being maintained as a switching point for digital transmission connections between a system user and said second mobile exchange. - View Dependent Claims (6, 7, 8)
-
Specification