Telefonaktiebolaget Lm Ericsson (publ)

Christian Herrero-Verón

Regina Johannesson

A user equipment (UE) includes a resettable timer that clocks a period after a successful packet-switched handover in a communication system. If a command message for setting packet-data transmission parameters is not received from the network before the period elapses, the UE starts a transmission-parameter negotiation if the UE wishes to do so. In this way, a UE can negotiate optimal parameters for packet-data transmission.

Transmission parameter negotiation after packet-switched handover

A system and method for using Mobility Management (MM) and Session Management (SM) procedures in an SAE/LTE system. The present invention modifies several MM and SM procedures that have been defined for other 3GPP access systems (such as GERAN, UTRAN) so that they meet the requirements of LTE/SAE. While the present invention re-uses some existing procedures, it further defines new protocols for MM and SM procedures when accessing 3GPP systems by Evolved UTRAN (EUTRAN). With respect to the new protocols, the encoding rules are re-used from the existing MM and SM procedures and a very similar general message format is created. With respect to the signaling messages, the present invention re-uses the existing information element definitions for each parameter included in a message.

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Lund, Sweden

Christian Herrero-Verón