Cell & Sat

Societe Anonyme Dite: Compagnie Industrielle Des Telecommunications

Bogéna De Jaeger

Michel Mouly

Didier Verhulst

A method is provided for optimizing allocation of transmission resources in a mobile radio communication cellular network. The network has at least one base station controlled by a base station controller, and a connecting network connecting the base stations(s) with the base station controller, wherein setting up, maintaining and terminating a communications channel between a mobile station located in the cellular network are implemented by exchanges of signalling messages. The connecting network includes at least one radio link with shared resources between the base station(s) and the base station controller. Such a method includes: analysing content of all or a portion of the signalling messages, including searching for and detecting in the content of the signalling messages data indicating a traffic activity; and allocating or not allocating a resource channel in the radio link with shared resources according to data indicating a traffic activity.

Method for optimizing the allocation of resources in a cellular network using a shared radio transmission link, network and network adapters thereof

A method for transmitting data in a mobile radio communication cellular network, wherein setting up, maintaining and terminating a data communication channel between a caller and a called party located in the cellular network are implemented by the exchanges of signaling messages. A caller and/or a called party each is located in a local zone of the cellular network. The method includes: a first detecting phase if the caller and the called party of the communication are located in the same local zone of the cellular network, according to a detection strategy including a step of analyzing all or a portion of the signaling messages; and then triggering a local loopback operation of all or a portion of the data exchanged between the caller and the called party, in the case where the detecting phase confirms the local nature of the communication between the caller and the called party.

Method for optimizing the transmission resources by local loopback in a mobile radio communication cellular network, network and local adapters thereof

The method relates to the detection of the training sequence of a self-adapting equalizer at the receiver end of a synchronous data-transmission system, the training sequence being preceded a synchronizing transmission of data transformed on coding into a succession of multivalent symbols such that the transmitted signal has a frequency spectrum which is substantially a single large-amplitude spectrum line. The training sequence begins with the transmission of data transformed on coding and at least one null symbol. The method consists in detecting the presence of the large-amplitude spectrum line in the signal formed by the received but not yet equalized symbols by means of a digital filter 40 and in thereafter detecting the first following major drop in absolute amplitude of the signal that lasts throughout the duration of one symbol period. This is done by means of a low amplitude level detector 50. The invention applies to the detection of the training sequence for an equalizer in a system operating according to CCITT recommendation V 37.

Growing community of inventors

Paris, France

Bogéna De Jaeger