Commissariat a L'energie Atomique Et Aux Energies Alternatives

Motorola Solutions, Inc.

Mounir Kellil

Christophe Janneteau

Alexis Olivereau

Alexandru Petrescu

Nicolas Riou

Pierre Roux

A method for selecting a router node in a LLN (Low power and Lossy Network) type telecommunication network wherein, upon receipt by a router node of a data packet from a host node or an adherence request to a multicast group from a host node, the router node transmits to a root node a MER_Request request of configuration as a multicast router node to serve the host node, and upon receipt of the MER_Request request, the root node determines, from an association table, a configuration of the router node and transmits to the router node a MER_Reply reply message including the determined configuration.

Method, device and computer program for selecting a router node in an LLN network

A method equalizing sizes of data packets by blocks of a multimedia stream including a succession of data packets of variable sizes. The method includes: storing a group of N (a predefined integer) data packets in a buffer memory; computing average size Tm of a packet from the different sizes of the N packets; generating a base stream including N data packets to be transmitted, wherein each has a size equal either to the rounded-down integer part &#x2514;Tm&#x2518;, or to the rounded-up integer part &#x2514;Tm&#x2518; of the average size, and at least one additional stream including N redundant data packets computed from the base stream packets, having same size as the base stream packets, and intended to enable a receiver to restore any lost packets if the loss rate is greater than a predefined threshold; and transmitting the base stream and the additional stream(s) to the receivers.

Method for equalizing the size of data packets by blocks of a multimedia stream

A mobile communication network comprises a home agent supporting mobility of a mobile entity by generating bindings between a home address of the mobile entity and a care of address of the mobile entity. A mapping processor provides at least one set of mappings between a potential future care of address for a mobile entity and a real time characteristic criterion. The mappings may for example be determined in response to previous movements of the mobile entity in the communication network. A processor determines a real time characteristic and the home agent is arranged to change a binding between the home address and a current care of address in response to the at least one set of mappings and the real time characteristic, and without receiving binding updates from the mobile entity. The approach may allow support for mobility of a mobile entity while reducing signalling in support of mobility.

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Massy, France

Mounir Kellil