Telefonaktiebolaget Lm Ericsson (publ)

Magnus Andersson

Carl Magnus Thornberg

Olle Erik Grimlund

Torbjörn Einarsson

Magnus Westerlund

Anders Nohlgren

A multimedia provider () generates, based on a request for a media channel from a user terminal (), a session set-up description that is returned to the user terminal (). The description defines, when processed in the terminal (), a session window () that is displayed on a screen () of the terminal and comprises a region () for displaying media data of a requested channel and a channel region () comprising information on alternative available media channels. The description also defines a binding between user inputs () of the terminal () and identifiers of the alternative channels. The set-up description allows for a user-friendly channel switch by automatically transmitting a channel switch request to the multimedia provider () upon a triggering of the user input () that is associated with the identifier of the requested media channel. The description, thus, provides a visually appealing graphical interface and simultaneously allows for a user-friendly media channel switch.

Multimedia session management

A method and system for controlling congestion on a packet switched radio channel (PRCH) is disclosed. A PRCH congestion control function determines if the average time delay for packet calls on the PRCH is within a delay alarm level. If the average time delay is not within the delay alarm level, it is then determined which packet calls to expel from the PRCH in order to decrease the average time delay. The determination of congestion may be made for each of the uplink and downlink of a PRCH separately, or, on the combined uplink and downlink of the PRCH.

Packet switched radio channel congestion control

A method and system for packet switched radio channel (PRCH) traffic supervision is disclosed. A PRCH supervision function receives a packet report for each data packet transmitted on the PRCH. The PRCH supervision function calculates an estimate of average data traffic for each packet call on the PRCH, an estimate of average data traffic on the PRCH and an estimate of the average packet delay on the PRCH. The calculations may be done for the uplink and downlink of the PRCH separately, or, as values for the combined uplink and downlink of the PRCH. The results of the calculations may then be used to determine if a packet call should be admitted to the PRCH or if a packet call should be expelled from the PRCH.

Packet switched radio channel traffic supervision

A method and system of packet switched traffic management in a cellular telecommunications system is provided. The invention comprises a packet switched radio channel (PRCH) manager for each cell of a cellular system and a PRCH controller for each PRCH in the cell. The PRCH manager interacts with and, controls one or more PRCH controllers. The PRCH manager performs the functions of evaluating service requests, handling a PRCH admission queue and managing the active PRCHs of the cell. The PRCH controllers perform the functions of supervising ongoing traffic, controlling admission and controlling traffic congestion for each individual PRCH. The invention allows a system operator to set a maximum tolerable delay for each PRCH and a priority for each packet call. By selectively choosing the maximum tolerable delays and priorities within the system, the system operator can reduce the probability that a PRCH user is subject to unacceptable packet transmission delay.

Packet switched traffic management in a cellular telecommunications

A method and system for controlling admission to a packet switched radio channel (PRCH) is provided. A PRCH admission control function evaluates admission requests for users requesting admission to a PRCH. The admission requests each contain a priority value and an estimated data traffic for the requesting user. If the estimated data traffic from one or more packet calls currently using the PRCH and having a priority equal to or higher than the priority of the requesting user, plus the estimated data traffic required by the requesting packet call are less than a maximum tolerable traffic level, the packet call is granted admission.

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Stockholm, Sweden

Magnus Andersson