摘要:
In a method of providing a backward and forward compatible speech codec payload format, the following steps are included: providing S10 an RTP package; including S20 payload according to a first codec into the provided RTP package, and appending S50 payload according to a second codec into the provided RTP package. In addition, at least one unused bit is located S30 in the included first codec payload, and the located at least one unused bit is designated S40 as a codec compatibility bit. Finally, the designated at least one codec compatibility bit is utilized S60 to provide an indication of the presence of the appended second codec payload.
摘要:
In a method of improved media frame transmission in a communication network. Initially a plurality of 'original' or regular media frames are provided for transmission. According to the invention, robust representations of the provided regular media frames are generated and stored locally. Subsequently, one or more of the regular media frames is/ are transmitted. The invention detects an indication of a loss of a transmitted media frame, and the idea is to transmit, in response to a detected frame loss, a stored robust representation of the lost media frame and/ or a stored robust representation of a subsequent, not yet transmitted, media frame to increase the media quality.
摘要:
In order to efficiently handle the switch between user media and announcement media, a basic step (Sl) is to first determine a configuration of the user media. Next, a configuration of the announcement media to be presented is determined (S2) based on the determined user media configuration. Subsequently, the announcement media is configured (S3) according to the announcement media configuration, and the configured announcement media is finally sent (S4) to the intended user. In this way, the overall appearance or sound of the announcement will be virtually the same as or at least similar to the overall appearance or sound of the user media, preferably without distortions. This allows the user to perceive the announcement as clearly as possible.
摘要:
A method of controlling an adaptable jitter buffer in accordance with the present invention detects (Sl) a context description of data handled by the adaptable jitter buffer. Thereafter it is determined (S2) whether the detected context description is equal to a predetermined context description. If not, jitter buffer adaptation proceeds as normal (S3). Otherwise it is determined (S4) whether the current target buffer depth is too low for the detected context description. If not, the target buffer depth is frozen (S5) to the current value. Otherwise (S6) it is increased and frozen at a higher value that is compatible with the detected context description.
摘要:
A signalling gateway is arranged to allow a first client using hypertext transfer protocol, HTTP, to initiate a real-time connection to a SIP, session initiation protocol, client using SIP. The signalling gateway is arranged to use a distributed shared memory to support communication between the first client and the signalling gateway regarding session information of the real-time connection. Corresponding methods, computer programs, and computer program products are also presented.
摘要:
A method and arrangement for controlling a balance between Packet Switched(PS) data, and Circuit Switched (CS) data in a cellular communication network. A network node is arranged in a cellular communication network to control communication of PS data between a first UE and a base station, and to control communication of CS data between a second UE and the base station. Both the first UE, the second UE and the base station are associated to the cellular communication network and are located in the cell. The network node comprises a controller 402 which is adapted to identify a risk of congested communication of data, and a transceiver 406 which is adapted to communicate PS data with the first base station, and to communicate CS data with the second base station. The controller is further adapted to request the second UE to change communication settings, and the controller is further adapted to reallocate transmission resources from the second UE, to the first UE.