PACKET EXCHANGE REMOTE MOBILE RADIO COMMUNICATION SYSTEM USING MORE EFFICIENT HARD HANDOVER

    公开(公告)号:JP2001211471A

    公开(公告)日:2001-08-03

    申请号:JP2000373660

    申请日:2000-12-08

    Abstract: PROBLEM TO BE SOLVED: To improve communication quality by providing a hard succession configuration in which the interruption of connection to a mobile object is small/short regarding a general mobile telephone system (UMTS) operating on the basis of a packet exchange theory, an overall system (GSM) for mobile communication or the other remote mobile radio communication system. SOLUTION: In this packet exchange remote mobile radio communication system such as the UMTS or the GSM, a target RNC 24 requests a direct link 36 to an operating controller 22 for in hard handover about a mobile object 18, the controller 22 transmits an uplink frame from the mobile object 18 to both a TRNC 24 and a core network 10, the network 10 transmits a downlink frame to the TRNC 24. The TRNC decides the time when the handover is completed and reconstructs a frame when necessary.

    MOBILE WIRELESS REMOTE COMMUNICATION SYSTEM USING SYNCHRONOUS HAND-OVER

    公开(公告)号:JP2001197542A

    公开(公告)日:2001-07-19

    申请号:JP2000373661

    申请日:2000-12-08

    Abstract: PROBLEM TO BE SOLVED: To provide a mobile wireless remote communication system such as a generic mobile phone system or a generic system for mobile communication and, specifically, a system that provides a real time service. SOLUTION: In the mobile wireless network such as a generic mobile phone system, when an object RNC 24 takes over control of a mobile object from an RNC 22 handling the control or in the case of relocation, a TRNC 24 transmits a request to an SRNC 22 via an Iur link 27 and the SRNC 22 returns frame timing information. The TRNC 24 synchronizes a user as to an uplink thereby allowing two controllers to transmits the same packet ion a synchronous state. A core network (10) can suppress duplication in a packet.

    MOBILE WIRELESS REMOTE COMMUNICATION SYSTEM USING ENHANCED HARD HAND-OVER

    公开(公告)号:JP2001197543A

    公开(公告)日:2001-07-19

    申请号:JP2000373662

    申请日:2000-12-08

    Abstract: PROBLEM TO BE SOLVED: To provide a mobile wireless remote communication system such as a generic mobile phone system or a blanket mobile communication. SOLUTION: A TRNC 54 in a UMTS directly transmits a takeover instruction signal to an SRNC 52 via an Iur link 50 to realize takeover of control of a mobile body from the RNC 52 handling the mobile body to an object RNC 54. Even when a link is present in advance or not present, the TRNC may transmit a request and a protocol to set the link stated above. A core network no longer takes participation in the takeover and a considerable time can be saved.

    USER EQUIPMENT DEVICE FOR UMTS MOBILE TELEPHONE COMMUNICATIONS SYSTEM

    公开(公告)号:JP2002271867A

    公开(公告)日:2002-09-20

    申请号:JP2002037537

    申请日:2002-02-15

    Abstract: PROBLEM TO BE SOLVED: To provide a user equipment device of a UMTS(Universal Mobile Telephone System) mobile radio telecommunications system. SOLUTION: The user equipment device(UE) works selectively in two modes of operation, a connected mode in which resources of the system are allocated to setting up a connection with the user equipment device and an idle mode. The user equipment device is identified in idle mode by a first identity (IMSI; TMSI; PTMSI) and in connected mode by a second identity. The user equipment device in connected mode is capable of processing messages in which it is identified by its first identity (IMSI; TMSI; PTMSI).

    ENHANCEMENT OF CONFIGURATION FOR CALL FROM ONE MOBILE BODY TO ANOTHER

    公开(公告)号:JP2001197544A

    公开(公告)日:2001-07-19

    申请号:JP2000373663

    申请日:2000-12-08

    Abstract: PROBLEM TO BE SOLVED: To provide enhancement of a configuration for a call from one mobile body to another in a mobile wireless remote communication system such as a generic mobile phone system (UMTS) or a blanket system (GSM) for mobile communication. SOLUTION: An RNC 22 transmits information with respect to a 1st mobile body such as an IMSI of the 1st mobile body from the 1st mobile body 18 to a CN 10 through an uplink with respect to two mobile bodies 18, 19, the both of which are placed in the same UTRAN 24 and at least either of which has the IMSI, stores at least part of the information, and when the RCN 22 receives the same information from the CN 10 toward the 2nd mobile body through a downlink, the RNC 22 recognizes that the two mobile bodies are present in the same UTRAN 14 and starts local switching operation in this method. A delay can be reduced and switching of the call is attained on a local reference. The RNC 22 may store a data frame from the 1st mobile body 18 for the comparison in place of storing the IMSI.

    METHOD FOR CONTROLLING ROUTING AREA UPDATE IN PACKET RADIO ACCESS NETWORK ARCHITECTURE

    公开(公告)号:JP2001094580A

    公开(公告)日:2001-04-06

    申请号:JP2000243621

    申请日:2000-08-11

    Abstract: PROBLEM TO BE SOLVED: To provide an improved technique for reducing unnecessary routing area update while guaranteeing that the location of a moving body terminal is known when the moving body terminal begins to communicate data after standby. SOLUTION: This technique optimizes routing area update in an inter-system hand-over between GSM/GPRS and UMTS in an URA connection state of UMTS. At least in a 1st radio access system, an operation mode wherein a radio link is maintained between the moving body terminal and the 1st radio access system after data transmission is completed is provided and when next data transmission is started, routing update is performed only when the moving body is in a 2nd radio access system routing area; when packet transmission is started by a network, the 1st radio access system receives a paging request and pages a core network common routing area in response to the reception of the paging request.

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