Abstract:
A method and apparatus are provided for regulating sending implemented by a station during a tournament for access to a wireless communication network. The method includes, in the course of a round of the tournament: a step of reception of a first signal, sent by another station and indicating that this other station has obtained during the round of the tournament an authorization to send a data packet, a step of sending of a second signal indicating that the station has received the first signal.
Abstract:
A method and apparatus are provided for managing authentication of a user of a telecommunications network of an operator. The method includes the following steps: on receipt of a request for access to a service provided by the operator of this network by the user, issuing a request for identification of an authentication server destined for an authentication location server, the request including at least one identifier of the user; and on receipt of a response comprising an identifier of an authentication server associated with the identifier of the user, issuing a request for authentication of the user at the server identified for the requested service.
Abstract:
A method is provided for encoding an image sequence, including the step of dividing a reference image into blocks and a prediction step that includes the following steps: determining monitoring vectors associated with a common image and dividing the same into sub-blocks defining a first partition; determining monitoring vectors associated with an image to be compensated and dividing the same into sub-blocks defining a first partition obtaining a common partitioning into basic sub-blocks; determining first and second sets of monitoring vectors for the basic sub-blocks; movement-compensating a sub-block of the image to be compensated towards a sub-block of the common image.
Abstract:
A method is provided for encoding at least one image, divided into macroblocks, one macroblock including a set of blocks de pixels. The method includes, for at least one current macroblock of a current image, at least two iterations of the following steps: allocation of a priority level for encoding to at least one pixel of the current macroblock, selection of a pixel with the highest priority level called the priority pixel, prediction of a set of pixels including the priority pixel and a step of encoding a remainder from prediction for a region made up of predicted pixels of the macroblock, called the predicted region, the encoding step being used as and when the predicted region meets a predetermined encoding criterion.
Abstract:
A method and apparatus are provided for changing a location area allocated to a current terminal attached to equipment belonging to a first location area of a communication network. The equipment furthermore belongs to at least one second location area of the communication network. The first area and the at least one second area are able to overlap one another. The method includes: broadcasting, via a broadcast channel, an identifier of the first location area and an additional location datum including at least one identifier of the at least one second location area; and selecting, for the current terminal, from the first and the at least one second location area, a current location area, according to the additional location datum and at least one predetermined selection parameter.
Abstract:
A system, method, device and interface for selecting data for a wireless device. The system, method, device and interface provide for categorizing selected data based on two or more categories, determining an action based on the categorization, and transferring the selected data and the determined action to the wireless device. In one embodiment, the categorization of the selected data may also be transferred to the wireless device. The categorizing of the selected data may include receiving input related to the categorizing, and altering a categorizing algorithm utilized in performing the categorization in response to the received input. The input may include a new category and/or a change in an existing category.
Abstract:
A method is provided of obtaining information representative of an availability of a communications network, which includes a plurality of equipment exchanging routing data in accordance with a routing protocol. The method includes a stage of storing in chronological order at least some of the routing data exchanged between at least one first equipment and at least one second equipment; a stage of totaling unavailability times as a function of the routing data stored in chronological order for a predetermined time period; a stage of obtaining the information representative of an availability for the time period as a function of the totaled unavailability times.
Abstract:
A method and apparatus are provided for coding an image or a sequence of images, generating a data stream including data representative of pixel groups, referred to as blocks, in one of the images. The method includes: grouping blocks in a cluster of blocks according to the proximity of their respective values corresponding to at least one block parameter to be coded; determining a value of the parameter, the value being characteristic of said group of blocks; coding blocks of the cluster, where the values of the blocks for the parameter are coded implicitly by inheritance of the characteristic value or are coded as refinements relative to the characteristic value, and coding a data structure associated with the cluster of blocks, the data structure including data associated with the characteristic value.
Abstract:
Telecommunications system including a network selection manager and a mobile node. The network selection manager is operable to determine a list of preferred mobile access networks to which the mobile node may be attached during an inactive state and to communicate the list of preferred mobile access networks to the mobile node. The list of preferred mobile access networks for selection is determined in accordance with operator determined conditions (e.g. load, congestion in the access networks, subscription info, location of the mobile, changes in the list since last communication to the Mobile Station, etc.). The mobile node is operable in the inactive state to select one of the plurality of mobile access networks which is available for attachment in dependence on the list of preferred mobile access networks communicated to the mobile node from the network selection manager.
Abstract:
A method for secure communications in a telecommunications network is disclosed. The network comprises a group of servers Si, referred to as Authorization Servers. For a transaction between an entity A and an entity B of this method comprises: a) entity A sends to one of the Authorization Servers Si an authorization request; b) the entity A declares to the Authorization Server Si its intention to communicate with entity B and the Authorization Server Si determines an individual secret key KSiB which it shares with entity B; c) the Authorization Server Si generates a session key KN,SiAB and sends the session key KN,SiAB to entity A; d) the Authorization Server Si generates a transaction identifier IDTRN,Si; e) the authorization server Si supplies entity B the transaction identifier IDTRN,Si; f) using this transaction identifier IDTRN,Si, entity B checks the validity of the transaction, and g) entity B generates the session key KN,SiAB.