US 2005/0237976 A1 · Data preservation

Abstract

A method ensures that a reduction in data throughput is minimized in the event of a cell change in a GPRS network. When it is determined that cell change is appropriate for a mobile station, the BSS ensures that no further data for the mobile station is transmitted form the SGSN, and then continues to transmit all buffered data to the mobile station. The throughput may be deliberately reduced for a part of this time, so that the system timers become adapted to the reduction in throughput which will occur at the cell change. When the buffer has been emptied, the cell change is effected and, thereafter, that mobile station is prioritised in the BSS, in order to allow any buffered data on the uplink or downlink to be cleared.

Claims20

Dependent claims

A method of controlling a cell change in a mobile communications network, in which data is transmitted from a core network node to a radio access node for transmission to a mobile station, and in which data is buffered in the radio access node before transmission to the mobile station, the method comprising:

determining in a radio access node that a cell change is required;
sending a message from the radio access node to the core network node, instructing the core network node not to send further data intended for the mobile station;
continuing to transmit buffered data from the radio access node to the mobile station;
and
when the buffered data has been transmitted to the mobile station, sending a message from the radio access node to the mobile station instructing the cell change.

2 more elements

Dependencies are inferred from the claim text.

Data preservation

Life of this patent

Data preservation

Life of this patent

Abstract

Claims20