Method of transfer of a call connection connecting a telecommunications base station and a mobile user terminal between dedicated and shared channels, and a corresponding telecommunications system

摘要

A method is provided of transfer of a call connection connecting a telecommunications base station and a mobile user terminal between dedicated channels in both directions therebetween and shared channels in both directions therebetween. The transfer is made dependent upon the amount of data buffered at the base station and the user terminal for transmission therebetween and/or the rate that data arrives at the base station and user terminal for transmission therebetween. The transfer is also dependent upon the value of a measured parameter of the signals between the base station and the user terminal, the parameter being signal attenuation or propagation delay.

主权项

1. A method of transfer of a call connection connecting a telecommunications base station and a mobile user terminal between dedicated channels in both directions therebetween and shared channels in both directions therebetween, comprising:
determining amount of data buffered at the base station and the user terminal for transmission therebetween and/or rate that data arrives at the base station and the user terminal for transmission therebetween; determining a value of a measured parameter of signals between the base station and the user terminal, the parameter being signal attenuation or propagation delay; and determining whether or not the shared channels are in a mode in which an acknowledgement of receipt is required to be received back before data is assumed to have been correctly received; deciding to make the transfer, dependent upon said value and upon said amount or rate, and upon said mode determined.