Telefonaktiebolaget Lm Ericsson (publ)

Jens Knutsson

Lars Westberg

Hans Oskar Eriksson

Paul Stjernholm

Fredrik Persson

Magnus Persson

Magnus C Frodigh

Paul Peter Butovitsch

Carl Magnus Thornberg

Magnus E Madfors

Magnus Sundelin

A method of performing a compression operation on data in a mobile communication network. An intermediate node located between a mobile terminal and a mobility anchor point node, receives a data payload. If the intermediate node has access to compression information required to perform the compression operation, it performs the compression operation to generate a modified data payload and sends the modified data payload to a next node. If the intermediate node does not have access to compression information required to perform the compression operation, it sends the data payload to the next node. The compression operation may be data compression or de-compression.

Data compression operations in a communications network

A method and apparatus for handling data compression in a mobile communication network. A node located between a mobile terminal and a mobility anchor point determines compression information relating to data transferred between the node and the mobile terminal. The node then sends the compression information to a network repository node for storage and retrieval by a further node in an event that subsequent mobility of the mobile terminal leads to transferring data between the mobile terminal and the further node.

Data compression in a communications network

A method of updating data compression software. The method comprises using real-time data to train upgraded compression/decompression software. A compressor and/or decompressor function processes and delivers the real-time data using an existing compression/decompression software. Following completion of the training process, the compressor and/or decompressor deactivates the existing compression/decompression software and activates the upgraded compression/decompression software to process and deliver the real-time data.

Software upgrading in a network

A radiocommunication system balances interference reduced by soft handoff with access network loading increased by soft handoff. When the access network loading exceeds some threshold for a particular transmission source, then the system limits or reduces that source's soft handoff connections with remote stations.

Method and system for soft handoff control based on access network capacity

The transmit power of a base station transmission to a mobile station is advantageously controlled. The base station receives a signal from the mobile station and determines a signal-to-interference ratio (SIR) associated with the received signal. The base station controls its transmit power to the mobile station using the determined SIR value in conjunction with a transmit power control command received from the mobile station. When the mobile station is in the process of a soft handover involving two or more base stations, each of those base stations determines an SIR value associated with a signal received from the mobile station. Moreover, each of the base stations controls its respective power using both the power control command received from the mobile station and the SIR determined by that base station. Similarly, when the mobile station is in the process of softer handover involving two or more sectors of a single base station, the SIR associated with a signal received from the mobile station in each of those base station sectors is determined and used to control the respective power of each base station sector in conjunction with a power control command received from the mobile station.

Downlink power control in a cellular mobile radio communications system

A method of stabilizing a communication system having base stations and mobile stations using integrated control of both signal transmission power levels and signal congestion levels. In particular, the method includes measuring a quality such as a signal to interference ratio of a signal transmitted from a mobile station to a base station and measuring a total received signal power at the base station. The signal transmission power of the mobile station is changed based on comparisons of the measured signals with predetermined threshold values. When the measured total received signal power at the base station exceeds the corresponding predetermined threshold value, a congestion control algorithm is executed to reduce the signal congestion level.

Integrated power control and congestion control in a communication system

The power levels of signals transmitted by base stations in a communication are controlled. Power level control commands are transmitted from a remote station to base stations from which the remote station receives signals to control the power levels of the signals transmitted by the base stations. A determination is made whether the remote station simultaneously receives a first signal from a first base station and at least one second signal from at least one second base station that include substantially identical message information. The first and second base stations transmit first and second reports of power levels of the first and second signals, respectively, to the controller. The controller compares the first and second reports and transmits first and second commands for adjusting the power levels of the first and second signals to the first and second base stations, respectively. The power level control commands are transmitted from the remote station to the base stations less frequently during macrodiversity to reduce the signalling requirements between the controller and the base stations. Also, the step size of the adjustment of the power levels of the first and second signals by the controller is reduced during macrodiversity to reduce the signalling requirements. This power control method is particularly beneficial for a CDMA system.

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Enebyberg, Sweden

Jens Knutsson