British Telecommunications Public Limited Company

Choong M Chin

Sverrir Olafsson

Andy Ly Low

Su Fong Chien

A method of triggering a network handover controlled by a communications device in a communications system comprising a plurality of networks with which the communications device can perform a handover operation to, the method comprising the steps of: determining a signal characteristic of each available candidate network in said communications system; forecasting a future value of said signal characteristic; determining a future handover margin for said signal characteristic of the network connection established by said communications device; determining if another available candidate network signal characteristic exceeds said handover margin at a future time, and if so, performing a handover operation to said other available candidate network, wherein said future handover margin for said signal characteristic is varied dynamically in dependence on said forecasted signal characteristic.

Handover technique for wireless communications enabled devices

A method allocates transmission channels to transmit nodes in a wireless network, the network comprising receive nodes and respective transmit nodes. Each receive node receives a data signal from its respective transmit node and is subject to interference from other transmission from other transmit nodes. The method includes: (i) determining the communication link gain of a data signal transmitted via each of communication paths; (ii) for each of the receive nodes, forming a set of the transmit nodes from which the receive node can tolerate interfering transmissions, (iii) collecting the formed set of transmit nodes from step (ii) for each receive node, and using the formed sets to generate a preferred set of transmit node and receive node pairs; and (iv) allocating a communication channel to the transmit nodes contained in the preferred set.

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Kuala Lumpur, Malaysia

Choong M Chin