Abstract: In one aspect, there is provided a method for the management of Short Message SM delivery in a mobile communication system comprising an Overlaying, e.g. IP-based or CS fallback in Evolved Packet System based, SM delivery network accessed via a mobile or fixed Access Network AN which is transparent to the Overlaying SM Delivery procedure, said method comprising, in an embodiment: informing an AN entity capable of detecting User Equipment UE activity over said AN, of unsuccessful SM delivery attempt due to not reachable UE, upon detection of UE activity over said AN for said UE, said AN entity informing an entity in charge of requesting new SM delivery attempt when said UE is again reachable.

Abstract: A method, user equipment and a network entity are disclosed. The method comprises the steps of: determining which of a plurality of packet bearers carry voice media components for handover between a packet-switched network and a circuit-switched network to ensure voice call continuity; and notifying an entity that will said enforce voice call continuity for which of said plurality of packet bearers carry said voice media components.

Abstract: A method is provided of registering a mobile terminal in an area of overlapping cell coverage by first and second networks for wireless mobile telecommunications. The networks are of different types. The method comprises: storing an identifier of the mobile terminal; storing in a controller a first record of in which cell or group of cells the mobile terminal is located in the first network and a second record of in which cell or group of cells the mobile terminal is located in the second network; and providing the mobile terminal with information of both records and said identifier.

Abstract: An example of the present invention is a method of transmitting encrypted user data to a mobile terminal in a wireless telecommunications network. The method comprises sending to the mobile terminal a data packet. The data packet comprises both an identifier of encryption information to used in recovering encrypted user data, and user data encrypted using said encryption information.

Abstract: A method is provided of transferring a call connection with a mobile terminal from a first network to a second network. The first network is capable of handling both circuit-switched and packet-switched modes of connection. The second network is capable of handling one of the packet-switched or circuit-switched modes of connection but not both. The terminal is capable of both packet-switched and circuit-switched call modes of connection. The method comprises the first network: identifying the location of the mobile terminal with respect to at least one of the networks, identifying the mobile terminal as being in a mode of connection not usable in the second network, instructing the mobile terminal to transfer the call connection to the other mode of connection, and transferring the call connection to the second network.

Abstract: In the GPRS when a MS moves from a former routing area to a new routing area, a method of supporting mobile Internet protocol characterized in that on receipt of a routing area update message from the MS, a mobile Internet protocol agent advertisement is sent only to that MS. The move may be inter-SGN or intra-SGN or may involve a change of RNC. The method allows efficient use of radio resources.

Abstract: The present invention provides methods involving at least one mobile unit configured to receive wireless connectivity using first and second wireless communication systems that operate according to first and second radio interface technologies, respectively. The first and second radio interface technologies are different. The method may include determining, in response to the mobile unit handing off from the first to the second wireless communication system, session establishment information for the second wireless communication system based on session establishment information associated with the first wireless communication system.

Abstract: The present invention provides a method of operating an idle mobile unit that is capable of communicating with first and second wireless communication systems. One embodiment of the method includes providing a location update message in response to the idle mobile unit transitioning from a first tracking area associated with the second wireless communication system to a second tracking area associated with the second wireless communication system. The first and second wireless communication systems are capable of paging the idle mobile unit following the location update message.

Abstract: In handover in a wireless telecommunications network, dummy packets, or data packets with a last used sequence number indicator are transmitted from a source node eNB 2 to a target node 3. When the target node eNB 3 detects the information, it knows the sequence of data packets being received from the source node eNB 2 and which is the last one and its sequence number. Thus, data packets may be suitable ordered for delivery to a mobile terminal UE 1.

Abstract: In handover in a wireless telecommunications network, dummy packets, or data packets with an indicator bit, are transmitted from a gateway node MME/SAE GW 4 to a source node eNB 2 when there is no more data being sent to the source node 2. The source node 2 forwards them to a target node eNB 3. When the target node eNB 3 detects the indictors, it knows that there is no more data awaiting to be received from the source node 2 and it can continue with data sent from the SAE GW to it instead.

Abstract: According to an aspect of the invention, a method for handover of a mobile terminal from a source node to a target node in a wireless telecommunications network includes the steps of making data forwarding of fresh data optional irrespective of the RLC mode, which may involve RLC-UM or RLC-AM bearers. The method may include providing an explicit instruction to the mobile terminal for each bearer on whether a bearer is subject to data forwarding or not. This may then be used by the mobile terminal to handle the buffered packets and PDCP SNs.

Abstract: The present invention relates to a method for a handover of a UE (User Equipment) currently engaged in a voice call. More particularly, the invention relates to a handover from 1) a packet based radio where Voice Service is provided via VoIP over the radio and is controlled via Session Initiation Protocol (SIP) based signalling (e.g. LTE, E-UTRAN or WIMAX radio) to 2) a radio access network where Voice Service can be only provided via circuit switched (CS) domain (a visited mobile switching centre (VMSC) is needed) such as legacy 3GPP UMTS Terrestrial Radio Access Network (UTRAN)/GSM/Edge Radio Access Network (GERAN) coverage.

Abstract: In a method of detecting whether a given node supports a given protocol version, a source node sends a request message to the destination mode based on a first protocol version. The source node receives an indication message in reply to the request, and may detect that the destination node does not support the first protocol version based on the indication message. Accordingly communications may be established between a user of the wireless network and an external network via the source and destination nodes.

Abstract: The present invention provides a method applicable to a mobile unit operating using Long Term Evolution (LTE) technology and having a single radio interface. The method controls a handover from a Voice over Internet Protocol (VoIP) call to a Circuit Switched (CS) call. The method comprises providing a CS call control message in a packet switched message, and routing the CS call control messages to a Mobile Switching Centre (MSC). Thereafter, a handover of the VoIP call to the CS call is initiated in response to receiving the call control message.

Abstract: In a telecommunications system, such as E-UTRAN, a User Equipment 6 is connected to a base station eNB 8 by an early radio bearer, which is established using preset values stored at the UE 6 and at the eNB 8. This enables data to be transferred over the radio link prior to formal establishment of a radio bearer between the UE 6 and the eNB 8.

Abstract: A multicast status availability indication from an anchor (24) is provided to a plurality of base nodes (22) that are part of a multicast group serviced by the anchor (24). The availability status indication in one example is sent autonomously by the anchor (24) independent of any inquiry or attempted setup of a new session with that anchor by a base mode (22). The base modes (22) maintain a candidate anchor set that includes information regarding currently available anchors for establishing new sessions, for example.

Abstract: A communication system includes a decentralized, flat architecture where a plurality of base nodes each include controller capabilities so that a centralized base node such as a radio network controller is not required. At least one of the base nodes acts as an anchor node. The anchor node associates a time stamp with at least one packet and provides that to the plurality of base nodes. In one example, a multicast approach is used by a router device for distributing the packet and the associated time stamp to the plurality of base nodes. Each base node controls a timing of a transmission of the at least one packet over a wireless interface responsive to the associated time stamp.

Abstract: A telecommunication system including a mobile station, and means for a mobile station to receive voice-over Internet Protocol (VoIP) calls when it is roaming away from a home network, comprising: means for informing a serving GGSN of the International Mobile subscriber Identity (IMSI) of the called mobile station, and means for enabling a local VoIP control server to map a called MSISDN number to the IMSI number.

Abstract: The present invention provides a method for determining a tracking area associated with a mobile unit based on a location update frequency. The method includes determining, at a mobile unit, a tracking area associated with the mobile unit based on a location update frequency.

Abstract: The present invention provides a method for assigning a tracking area to a mobile unit based upon a plurality of location update frequencies. The method may include determining, at the mobile unit, a tracking area associated with the mobile unit based on a plurality of location update frequencies.