Alcatel Lucent

Lutz Ewe

Hajo Bakker

Oliver Blume

Siegfried Klein

Hajo-Erich Bakker

Rolf Sigle

Markus Gruber

Ulrich Barth

Bernd Gloss

Edgar Kühn

The present invention relates to a radio resource controller () for controlling radio resources of a serving radio access node (). The controller is configured to assign particular radio resources of the serving radio access node to a radio communication session established between the serving radio access node and a particular mobile station, and to push session information (UE_id; UE_ctx_ptr) of the radio communication session into a common data repository () accessible to a further radio resource controller () controlling radio resources of a further radio access node (). The session information comprise a mobile identifier (UE_id) that may be used by the particular mobile station for resumption of the radio communication session, and further allow retrieval of contextual communication parameters (UE_ctx) used by the serving radio access node for radio communication with the particular mobile station during the radio communication session. The radio resource controller and the further radio resource controller would run on a common computer platform as two respective process instances. The computer platform would further hold the common data repository.

Call drop avoidance during radio link failure

The invention relates to a method for performing a handover of a mobile device from a source cell to a target cell in a cellular wireless telecommunication network, the method comprising the following steps: configuring the mobile device to transmit a first handover trigger signal to the source cell, when a difference between a signal strength of the target cell and a signal strength of the source cell as measured by the mobile device is above a first threshold (; determining (S) if a cell traffic load in the source cell is above a cell traffic load threshold; if so, configuring the mobile device to transmit a second handover trigger signal to the source cell, when a difference between a signal strength of the target cell and a signal strength of the source cell as measured by the mobile device is above a second threshold (), wherein the first threshold is larger than the second threshold.

Method for performing a handover of a mobile device

A mobile terminal is attached to a first network of a first technology type RAT1. The mobile terminal transmits UE capability information to the first network by a plurality of containers. Each container relates to one type of technology which is supported by the mobile terminal. Each container includes an indicator tag identifying the RAT to which its contents relate. On receipt of the containers, the first network decodes the content of the container that is indicated to be of its own technology type. If there is a neighbouring network of another technology type with which the mobile terminal is compatible, the first network sends the relevant container to the second network, where its content is decoded. The second network may return generalized information derived from the container back to the first network. This mechanism provides a content-agnostic approach for transferring mobile capability information between networks of different technology types.

Apparatus and method for handling mobile terminal capability information

Growing community of inventors

Stuttgart, Germany

Lutz Ewe