36 results about "Dual Transfer Mode" patented technology

A method for the handover of dedicated as well as shared resources for a communication device. The communication device simultaneously uses circuit switched and packet switched bearer services of a communication network according to a certain connection mode. The method comprises performing a handover procedure, wherein a change from old resources used by the communication device to new resources to be used by the communication device is effected simultaneously for dedicated as well as shared resources.

A method and terminal are disclosed for use in a wireless communication system, in order for the terminal to transition from a dual mode, in which a packet switched connection and circuit switched connection are used, to a single mode in which packets are transferred. The mobile terminal is for receiving minimum system information necessary to perform this transition in an uninterrupted manner. This system information is sent to the mobile terminal automatically or on a regular basis, and is additionally sent to the mobile terminal partly upon request of the mobile terminal. A release indication is sent to the terminal separately from the system information, notifying the terminal that the circuit switched connection will be released, at which point a timer is started. The system information is employed by the mobile terminal to transition from the dual mode in the uninterrupted manner, if the timer has not expired.

A method, system, and mobile station are presented for informing a packet control unit (PCU) whether the dual transfer mode (DTM) capable mobile station has an ongoing circuit switched connection and is in dedicated mode. The packet control unit will typically be located at a base station. Upon entering the dedicated mode, the mobile station alerts the PCU of entry into the dedicated mode, using a mobility management (MM) procedure. This mobility management procedure is utilized for alerting the PCU about the dedicated mode, regardless of physical movement of the mobile station such as movement from one cell to another.

The invention discloses a method for suspending a packet data service, which comprises the following steps of: receiving a user equipment context release request message sent by an evolution base station, wherein the user equipment context release request message comprises a redirection circuit domain service backspacing indication; according to the redirection circuit domain service backspacing indication, starting a timer; and if a context request message which is sent by a Serving GPRS (General Packet Radio Service) Support Node SGSN of a target network according to the triggering of user equipment is still not received after the timer is timed out, suspending the packet data service on a source network. According to the method disclosed by the invention, under the condition that a target cell does not support a DTM (Dual Transfer Mode), the UE triggers a Mobility Management Entity (MME) of the source network to suspend the packet data service on the source network or the target network and the UE can accurately know whether the target cell supports the DTM, and thus, the packet data service is avoided being wrongly suspended or not being suspended.

The invention discloses a method for switching dual transfer modes between a universal access network and other universal access networks. A universal access network controller establishes a user data link for a circuit domain and a packet domain for a terminal simultaneously and processes a switching process of the circuit domain and the packet domain related to the same terminal. The invention provides the universal access network controller applicable to the method. By the method, the mobile terminal capable of performing circuit domain and packet domain services simultaneously can freely roam on a wireless core network through different access technologies, and the mobility and service experience of a user are improved.

A method for operating a Mobile Station (MS) for maintaining a Dual Transfer Mode (DTM) and apparatus for supporting the DTM for a handover process in a Global System for Mobile Communications (GSM) system are provided. The method includes receiving a broadcast control message from at least one neighbor cell, determining whether the at least one neighbor cell supports the DTM by using the broadcast control message, and reporting the determination result on whether the DTM is supported and a received signal measurement result. Accordingly, a DTM service can be seamlessly maintained.

A method of indicating the content of a message element comprises providing an indicator outside that message element. This is particularly applicable to indication of a dual transfer mode handover command.

The invention discloses a method and device for entering a dual transfer mode to request radio resources, which are applied to a mobile terminal with a radio resource control (RRC) entity. According to the invention, an RRC entity of an MES (Mobile Earth Station) is deleted so as to initiate a management protocol of requesting radio resources through entering a DTM (Dual Transfer Mode), definitions of signalling GSS (Gateway Station Subsystem) Iu mode DTM REQUEST and GSS Iu mode DTM REJECT of t RRC are deflected at the same time, and a first MAC (Media Access Control) entity of the MES is responsible for management control for entering the DTM to request radio resources, thereby realizing conversion from double-layer entity control management to single-layer entity control management, simplifying the process of entering the DTM to request radio resources, and improving the transmission efficiency of data in a satellite mobile communication system.