EP3100513A1 - Transfert de terminal d'abonné de réseau de communication mobile - Google Patents

Transfert de terminal d'abonné de réseau de communication mobile

Info

Publication number
EP3100513A1
EP3100513A1 EP14704091.9A EP14704091A EP3100513A1 EP 3100513 A1 EP3100513 A1 EP 3100513A1 EP 14704091 A EP14704091 A EP 14704091A EP 3100513 A1 EP3100513 A1 EP 3100513A1
Authority
EP
European Patent Office
Prior art keywords
handover
subscriber terminal
switching center
mobile switching
subscriber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14704091.9A
Other languages
German (de)
English (en)
Inventor
Laszlo Tatrai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Solutions and Networks Oy
Original Assignee
Nokia Solutions and Networks Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Solutions and Networks Oy filed Critical Nokia Solutions and Networks Oy
Publication of EP3100513A1 publication Critical patent/EP3100513A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node

Definitions

  • the present invention relates to a handover in a mobile communications network and more particularly to a handover between mobile switching centers during a voice group call.
  • GSM-R Global System for Mobile Communications - Railway
  • GSM-R Global System for Mobile Communications - Railway
  • EIRENE European Integrated Railway Radio Enhanced Network
  • Radio for Railways Networks in Europe (MORANE) specifications are the binding standards, which describe the functional and system requirements for GSM-R networks including interoperability across borders.
  • GSM-R Global System for Mobile Communications
  • VCS voice group call service
  • VBS voice broadcast service
  • location-based connections e.g., location-based connections
  • call pre-emption e.g., call pre-emption in case of an emergency.
  • This will support applications such as cargo tracking, video sur- veillance in trains and at stations, and passenger information services.
  • GSM-R Global System for Mobile Communications
  • the distance between the base stations is 7-15 km. This creates a high degree of redundancy and higher availability and reliability.
  • VGCS allows a great number of users to participate in the same call. This feature imitates the analogue PMR (Private Mobile Radio) group call with the PTT key (Push- to-Talk).
  • VBS is a broadcast group call: this means that compared to VGCS, only the initiator of the call can speak. The others who join the call can only be listeners. This kind of call is mainly used to broadcast recorded messages or to make announcements.
  • participant in a voice group call e.g. the VGCS or VBS may be moving at a great speed when they are on board a train moving e.g. 200 km/h.
  • Communications of the moving participants in the voice group call is facilitated by handovers of the participants' subscriber terminals in the GSM-R network.
  • Typical handovers include handovers of the subscriber terminals from one base station to another and handovers of the subscriber terminals between mobile switching centers (MSC).
  • MSC mobile switching centers
  • the subscriber does not receive the paging notification due to a point-to-point call as the location of the subscriber is maintained in the source MSC. This causes that point-to-point calls to the subscriber are routed to the last know location of the subscriber, which is the old MSC.
  • the new location of the subscriber is updated in the GSM-R network only after the subscriber stops the talking in the voice group call and resources needed for the voice transmission are released.
  • the source MSC of the handover cannot transfer the paging message to the target MSC of the handover as connectionless messages are not transferred via the Mobile Application Part (MAP) E interface between MSCs.
  • the MAP is specified in 3GPP TS 29.002 Mobile Application Part (MAP) specification, version 10.6.0.
  • An object of the present invention is to provide methods and apparatuses and computer program products for implementing the methods so as to alleviate at least part of the above problems.
  • the objects of the invention are achieved by methods and apparatuses and computer program products which are characterized by what is stated in the independent claims.
  • the preferred embodiments of the invention are disclosed in the dependent claims.
  • a method comprising, determining a need to perform a handover of a subscriber terminal in a mobile communications network, said subscriber terminal participating in a voice group call as a talker, obtaining a subscriber identifier of the subscriber terminal, causing to transmit a message towards a target mobile switching center, said message including the obtained subscriber identifier, for performing the handover from a source mobile switching center to a target mobile switching center in the communications network.
  • a method comprising, obtaining a message indicating a request for a handover of a subscriber terminal in a mobile communications network, said subscriber terminal participating in a voice group call as a talker, from a source mobile switching center to a target mobile switching center in the mobile communications network, executing the handover, obtaining a message indicating a com- pletion of the handover, obtaining a subscriber identifier of the subscriber terminal from the message indicating the request for the handover or, requesting the subscriber identifier from the subscriber terminal in response to a completion of the handover.
  • an apparatus comprising an interfacing unit for communications of messages related to a handover of subscriber terminal from a source mobile switching center to a target mobile switching center in a communications network, and a handover unit operatively connected to the interfacing unit and configured to cause the apparatus to determine a need to perform a handover of a subscriber terminal in a mobile communications network, said subscriber terminal participating in a voice group call as a talker, to obtain a subscriber identifier of the subscriber terminal, to cause to transmit a message towards the target mobile switching center, said message including the obtained subscriber identifier, for performing the handover from the source mobile switching center to the target mobile switching center in the communications network.
  • an apparatus comprising an interfacing unit for communications of messages related to a handover subscriber terminal from a source mobile switching center to a target mobile switching center in a communications network, and a handover unit operatively connected to the interfacing unit and configured to cause the apparatus to obtain a message indicating a request for a handover of a subscriber terminal in the mobile communications network, said subscriber terminal participating in a voice group call as a talker, from the source mobile switching center to the target mobile switching center in the mobile communications network, to execute the handover, to obtain a message indicating a completion of the handover, to obtain a subscriber identifier of the subscriber terminal from the message indicating the request for the handover or, requesting the subscriber identifier from the subscriber terminal in response to a completion of the handover.
  • a computer program embodied on a non-transitory computer readable storage medium, the computer program being config- ured to control a processor to perform a method according to an aspect.
  • an apparatus including means to perform a method according to an aspect.
  • a computer program product comprising executable code that when executed, cause execution of functions of a method according to an aspect.
  • Some embodiments provide an improvement to updating the location of the subscriber terminal participating in a voice group call as a talker in case of handover of the subscriber terminal between mobile switching centers.
  • Figure 1 illustrates architecture of a mobile communications network including mobile switching centers according to an embodiment
  • Figure 2 illustrates radio network nodes connected to different mobile switching centers and a subscriber terminal participating in a group call as a talker moving between service areas of the radio network nodes;
  • FIGS 3a and 3b illustrate message flows during handovers according to embodiments
  • Figures 4a illustrates process for causing to transmit a message towards a target mobile switching center for performing a handover from a source mobile switching center to the target mobile switching center;
  • Figure 4b illustrates a process for obtaining a subscriber identifier of the subscriber terminal in connection with a handover of the subscriber terminal from a source mobile switching center to the target mobile switching center
  • Figure 5 illustrates an apparatus for carrying out an embodiment.
  • a subscriber terminal participating in a voice group call as a talker refers to a subscriber terminal that is allocated resources for communi- eating voice from the subscriber terminal to a mobile communications network.
  • the sub- scriber terminal may be the initiator of the voice group call or any subscriber terminal that is in turn to talk in the voice group call. Typically, only one subscriber terminal is in turn to talk at a time.
  • the allocated resources may comprise a traffic channel on a radio link between the subscriber terminal and a radio network node, e.g. a base station.
  • the radio link is used to transmit voice from the subscriber terminal to the radio network node and the radio link may be referred to as an uplink connection.
  • FIG. 1 illustrates an architecture of a mobile communications network 100 including Mobile Switching Centers (MSCs) 102, 104 according to an embodiment.
  • the mobile communications network offers services to subscribers holding a subscription to the network.
  • the services offered may include voice calls, voice group calls, data transmission and/or message transmission.
  • a subscriber may obtain access to the mobile communications network via terminal 108 that is capable to communicate in the mobile communications network.
  • This terminal may be referred to as a subscriber terminal.
  • the subscriber terminal includes a Subscriber Identity Module (SIM) that is used to authenticate the subscriber to the mobile communications network.
  • SIM Subscriber Identity Module
  • the mobile communications network includes one or more radio network nodes connected to the MSC.
  • the radio network nodes serve subscriber terminals 108 by providing radio access to the mobile communications network.
  • the radio access may be provided by transmission of radio frequency signals between the radio network nodes and the subscriber terminal over an air interface Urn.
  • the range of radio frequency transmissions is limited to the coverage area of each radio network node, whereby the coverage area may be used to define the service area of the radio network node 106.
  • One radio network node may have one or more cells, where the radio frequency transmission is provided.
  • a cell may be identified by a cell identifier.
  • the interface between the radio network node and the mobile switching center may be defined by an interface A and the MSCs may be interconnected by an interface E.
  • the air interface may be provided a wireless radio connection according to a communica- tions standard, including the 3GPP GSM, GSM-R, 3G, LTE, LTE-A or IEEE 802.1 1 based wireless local area network connection.
  • the A and E interfaces may be provided by wired or wireless connections according to any of the above defined communications standards.
  • the radio network nodes are a part of a Base Station Subsystem (BSS), where the radio network nodes are base stations controlled by a base sta- tion controller (BSC) that performs the radio resource management functionality.
  • BSS Base Station Subsystem
  • BSC base sta- tion controller
  • This embodiment may be according to the GSM or GSM-R specifications.
  • the radio network nodes may be referred to as NodeBs or evolved NodeBs or access points, and the base station controller may be referred to as a Radio Network Controller (RNC).
  • RNC Radio Network Controller
  • the mobile communications network provides its subscrib- ers a voice group call as a service.
  • the voice group call may be a voice call, where voice of at least one person is communicated from one subscriber terminal to a plurality of other subscriber terminals, as a service by the mobile communications network. It is possible that only one person can be talking during a voice group call. Also, more than one person can be talking in a voice group call, but in such a case the talkers should take turns.
  • the mobile communications network may implement a service logic of the voice group call in a mobile switching center or a service control node, whereby the number of persons talking in a voice group call may be controlled.
  • the subscriber terminal used by the person may receive the utterances of the person and transmits the received voice to the mobile communications network.
  • the voice of the user is processed for transmission in the subscriber terminal and transmitted to the mobile communications network for delivery to the voice group call participants, and therefore it does not need to be discussed herein any further.
  • Transmission of voice data in the group call from the subscriber terminal may be provide by a traffic channel allocated to the subscriber terminal in an uplink connection to the radio network node, e.g. a base station.
  • the voice group call may be refer to VBS or VGCS.
  • a mobile communications network may conform to some other technology than the GSM or GSM-R, whereby the specific terminology used or the parts of the mobile communications network and/or the services it provides may vary.
  • Figure 2 illustrates radio network nodes connected to different mobile switching centers 202, 204 and a subscriber terminal 210 participating in a group call as a talker moving between service areas of the radio network nodes 206a, 206b.
  • the MSCs and the radio network nodes may be as described with Figure 1 .
  • the moving subscriber terminal may a passenger or railway personnel on board a train, or a transceiver module including a subscription or a transceiver module connected to a device including the subscription.
  • the subscription may be implemented by a SIM card for example.
  • the MSCs provide the group call service to the subscriber terminal.
  • the tasks of the MSC include connection management for group call e.g. connection establishment and tear down of connections.
  • the group call service may be defined by a service logic that is executed by the MSC for providing the service.
  • the MSC may include a combination of software and/or hardware elements to facilitate execution of the service logic.
  • a subscriber terminal may have various modes in a group call provided by the service logic.
  • a Receive Mode the subscriber terminal is only receiving communications, i.e. listening to the other participant in the group call.
  • the subscriber terminal listens to the downlink communication of a VBS channel or a VGCS channel.
  • the channel may be allocated specific to each cell of the radio network nodes.
  • the subscriber terminal In a Transmit Mode, the subscriber terminal is both receiving and transmitting communications. In this mode, the subscriber terminal is allocated two dedicated control channels, one of them being a Slow Associated Control Channel (SACCH). Preferably, only one subscriber terminal is in TM at a time
  • the subscriber terminal has to listen to the Broadcast Control Channel (BCCH) of the serving cell, for example as defined in 3GPP TS 43.022 and 3GPP TS 45.008.
  • BCCH Broadcast Control Channel
  • a plurality of users may be participating in the group call.
  • Users participating in the group call are connected to the call by the service logic of the voice group call.
  • the service logic may be executed by the MSC that is serving the subscriber terminal and/or the MSC under which the subscriber terminal is located.
  • the group call Preferably, in the group call, only one participant is talking at a time. This participant may be the initiator of the voice group call or the subsequent talker in the group call, who has obtained his turn to talk after the initiator or after a previous talker in the group call.
  • the subscriber terminal 210 is moving from the service area of the radio network node 206 to the service are of the radio network node 206b.
  • the service areas of the radio network nodes are limited and the movement of the subscriber terminal causes a handover to take place from the radio network node 206a to the radio network node 206b.
  • the handover between the radio network nodes causes a handover from one MSC to another, i.e. an inter-MSC handover.
  • the inter-MSC handover the voice group call the subscriber terminal is participating is switched from the source MSC, MSC 102, to the target MSC, MSC 104. In this way the subscriber terminal may continue participating in the voice group call as a talker.
  • Figures 3a and 3b illustrate message flows during handovers according to embodiments.
  • the message flows of Figures 3a and 3b are explained with reference to Figure 4a illustrating a process for causing to transmit a message towards a target mobile switching center for performing a handover from a source mobile switching center to the target mobile switching center, and to Figure 4b illustrating a process for ob- taining a subscriber identifier of the subscriber terminal in connection with a handover of the subscriber terminal from a source mobile switching center to the target mobile switching center.
  • the process of Figure 4a may be performed by a radio network node or a subscriber terminal or the source MSC in the inter-MSC handover.
  • the process of Figure 4b may be performed by the target MSC in the inter-MSC handover.
  • the subscriber terminal may be moving from the service area of one radio network node to the service area of another as illustrated in Figure 2.
  • the service areas maybe provided by corresponding cells.
  • the subscriber terminal is moved from the service area of source radio network node to the service area of the target radio network node.
  • the processes may start 402, 412, when the device performing the method is connected to the mobile communications network according to Figure 1 and capable of communicating handover related messages for executing the inter-MSC handover.
  • a location of the subscriber terminal participating in a voice group call as a talker is updated to the target mobile switching center in the handover.
  • the mobile switching center may be provided in the mobile communications network according to Figure 1.
  • the location is updated by a message 304 transmitted 408 from the source MSC to the target MSC and including the subscriber iden- tifier of the subscriber terminal.
  • the message is transmitted in response to a determined 404 need to perform the handover.
  • the location is updated in response to a completion 418 of the handover.
  • the location is updated by a message that includes the subscriber identifier of the subscriber terminal and the message 324 is transmitted 420 from the subscriber terminal to the target mobile switching center of the handover.
  • the message transmitted 420 immediately after competition of the handover.
  • a paging notification of an incoming point-to-point call to the subscriber terminal may be routed to the target MSC of the inter-MSC handover immediately after the handover is completed.
  • the message flow involves a subscriber terminal (MS), one or more radio network nodes (BSS-A, BSS-B) and MSCs (MSC-A, MSC-B), which may a part of the mobile communications network illustrated in Figure 1 .
  • MS subscriber terminal
  • BSS-A, BSS-B radio network nodes
  • MSC-A, MSC-B MSCs
  • a message 302 is received from the radio network nodes, said message indicating that a handover of the subscriber terminal is required.
  • the message may be received for example after the subscriber terminal and/or one or more of the radio net- work nodes have performed measurements of signal quality performed.
  • the MSC-A may determine 404 on the basis of the received message that a handover of the subscriber terminal is needed.
  • the MSC-A is serving the subscriber terminal in the group voice call and knows the subscriber identifier of the subscriber terminal.
  • the subscriber identifier of the subscriber terminal may have been obtained 406 by the MSC-A from a database storing subscriber identifiers served by the MSC-A. Examples of the databases comprise e.g. a Visitor Location Register (VLR) or a Home Location Register (HLR).
  • VLR Visitor Location Register
  • HLR Home Location Register
  • the MSC-A causes a message transmission 304, 414 towards the tar- get mobile switching center MSC-B, said message including the obtained subscriber identifier, for performing the handover from the source mobile switching center MSC-A to the target mobile switching center MSC-B in the communications network.
  • the message is a handover request.
  • the MSC-B may obtain 420 the subscriber identifier.
  • the handover is executed in 316, 416, after which a message 318 indicating a completion of the handover is obtained from the radio network nodes. This message may follow a successful radio connection establishment of the subscriber terminal to the radio network node of the MSC-B.
  • the subscriber identifier included in the message to the target MSC-B allows implicit updating 320 of the location of the subscriber terminal to the MSC-B, whereby the subscriber terminal may be paged for point-to-point calls after the completion of the handover.
  • the MSC-A maintains information of subscriber terminals that are served by the MSC-A and information of services it provides to the subscriber terminals.
  • the maintaining may comprise obtaining from incoming service requests information that identifies the subscriber terminal served by the MSC-A and the associated service. This information may be used in executing the service logic of the voice group call.
  • the subscriber terminal when it initiates a voice group call, it causes to transmit a request for the voice group call to the MSC-A.
  • the MSC-A then stores the subscriber identifier and an identifier of the requested service, i.e. voice group call.
  • the MSC-A also stores also information regarding, whether the subscriber terminal is in turn to talk in the group call. The stored information may be used to determine whether or not to include the subscriber identifier to the message 304.
  • the subscriber identifier may be in- eluded to the message only, when the subscriber terminal has the turn to talk, i.e. is the current talker in the voice group call. And, if the subscriber terminal is not in turn to talk, the transmission of the subscriber identifier may be omitted. In this way sending unneces- sary information may be avoided in the inter-MSC handover.
  • the subscriber identifier has been transmitted to the MSC-B and the location of the subscriber terminal may be updated to the MSC-B, and the process may end.
  • the MSC-B and MSC-B are executing the handover that is initiated by the message 302 to the MSC-A.
  • the execution 317, 416 of the handover may comprise the MSC-A sending 414 a handover request to the MSC-B.
  • the handover execution may include reserving resources in the radio network nodes BSS-B connected to the MSC-B and informing the MSC-B about the voice group call service to be provided to the subscriber termi- nal, for example.
  • a message 318 is obtained indicating a completion of the handover.
  • the subscriber identifier of the subscriber terminal is determined.
  • the subscriber identifier may be determined on the basis of an identity request procedure 324 between the MSC-B and the subscriber terminal.
  • the identity request procedure allows implicit location update of the subscriber terminal to the MSC-B.
  • the identity request is preferably initiated in response to the completion of the handover, e.g. in response to receiving the message 318.
  • the subscriber terminal is served by the radio network node, e.g. the target cell, connected to the MSC-B. In this way the identity request procedure may be started immediately after the handover has been completed to obtain the subscriber identifier of the subscriber terminal.
  • the identity request procedure may comprise a request from the MSC-B to the subscriber terminal for the subscriber identifier.
  • the subscriber terminal responds to the request by a message including the requested subscriber identifier.
  • the subscriber identifier may be IMSI or TMSI.
  • the TMSI serves as an identi- bomb of the subscriber terminal only to one MSC that is preferably the MSC that has assigned the TMSI to the subscriber terminal.
  • the MSC-B may obtain the IMSI of the subscriber terminal from the MSC-A, where the IMSI is stored to a subscriber database, e.g. VLR or HLR, connected to the MSC-A.
  • the obtaining may comprise sending a request for the IMSI.
  • the request includes the TMSI and the MSC-A responds to the request by a message including the IMSI corresponding to the TMSI in the request.
  • the MSC-B may obtain the IMSI for uniquely identifying the subscriber terminal.
  • the IMSI may be obtained from the MSC-A by employing a procedure, e.g. the MAP Send Identification service in the TS 29.002 Section 8.1.4.
  • the subscriber identifier may be transmitted to the MSC-B by the subscriber terminal after the subscriber terminal determines 404 a need to perform the handover the on the basis of the signal quality measurements for example.
  • the subscriber terminal may be participating in the voice group call as a talker, whereby the subscriber terminal is allocated an uplink traffic channel for communications of voice in the voice group call.
  • the subscriber terminal knows 406 its subscriber identifier from its SIM card and any identifier, e.g. a Temporary Mobile Subscriber Identity (TMSI), assigned to the subscriber terminal by the mobile communications network.
  • TMSI Temporary Mobile Subscriber Identity
  • the subscriber terminal After completion of the handover, preferably immediately after the completion, the subscriber terminal is caused to transmit a message towards the target mobile switching center, said message including the subscriber identifier, for performing the handover from the source mobile switching center to the target mobile switching center in the communications network.
  • the MSC-B may determine the unique identifier of the subscriber terminal by sending a request for the unique identifier of the subscriber terminal to the MSC-A, wherein the request includes the subscriber identifier obtained from the subscriber terminal, similar to explained above.
  • the MAP Send Identification service may be employed, similar to explained above.
  • a reception of the message 318 indicating a completion of the handover causes the MSC-B to determine whether the subscriber identifier of the subscriber terminal is needed and thus whether the identity request procedure should be executed.
  • the determining may comprise determining whether the handover involves a voice group call and a subscriber terminal who is participating in the group call as a talker. This information may be determined from information obtained from the MSC-A during the handover execution 316.
  • the MSC-A may identify the MSC-B the one or more services of the moving subscriber terminal. The identifying may be provided by a service identifier that indicates the services, e.g. the voice group call.
  • the MSC-A may further provide the MSC-B information regarding the resources needed in the radio net- work nodes for the subscriber terminal that is handed over from the MSC-A to the MSC-B.
  • the resources needed for the subscriber terminal may be used to determine that the subscriber terminal is participating in the voice group call as a talker.
  • the resources needed for the subscriber terminal include a downlink dedicated control channel in the uplink direction and a dedicated control channel in the downlink direction.
  • the resource information may be used to determine that the subscriber terminal is participating the voice group call as a talker, e.g. in the TM of the voice group call, the identity request procedure is executed.
  • the subscriber identifier has been obtained and the location of the subscriber terminal may be updated to the MSC-B, and the process may end.
  • Figure 5 illustrates an apparatus 500 for carrying out an embodiment.
  • the apparatus may be used to implement the functionalities described in the embodiments described herein.
  • Figure 5 is a block diagram of the apparatus 500. Although the apparatus has been depicted as one entity, different modules and memory may be implemented in one or more physical or logical entities.
  • the apparatus may be a subscriber terminal or a mobile switching center in a mobile communications network illustrated in Figure 1 , for example. Different functions may be performed by different blocks of the apparatus and/or execution of the functions may be shared between parts or between all of the blocks.
  • the apparatus 500 comprises an interfacing unit 502, a handover unit (HO) 508, and a memory (M) 510, that are all being electrically interconnected.
  • the HO may comprise a single-core or a multi-core processor.
  • the interfacing unit comprises an input 504 and an output unit 506 that provide, respectively, the input and output interfaces to the apparatus.
  • the input and output units may be configured or arranged to send and receive data packets and/or transmissions according to one or more protocols according to communications standards and/or proprietary communications systems including but not limited to: ISA, PCI, Ethernet, SDH, SONET and IEEE 802.1 1 based Wireless Local Area Network and various cellular communications technologies mentioned above and any oth- er suitable standard/non-standard communication means.
  • the interfacing unit provides for communications of messages related to a handover from a source mobile switching center to a target mobile switching center in a communications network.
  • the HO may receive and transmit messages for execution of the handover.
  • the memory may comprise one or more applications that are executable by the handover unit.
  • the handover unit is capable of performing tasks for executing a handover according to an embodiment.
  • the tasks for executing the handover may comprise processing messages related to a handover procedure, preferably the inter-MSC handover procedure.
  • the handover unit may be implemented by a central processing unit (CPU) capable of performing further tasks in addition to the tasks for executing the handover.
  • the CPU may comprise a set of registers, an arithmetic logic unit, and a control unit.
  • the handover unit may have dedicated parts of the CPU for performing the handover tasks.
  • the control unit is controlled by a sequence of program instructions transferred to the CPU from the memory.
  • the control unit may contain a number of microinstructions for basic operations. The implementation of micro-instructions may vary, depending on the CPU design.
  • the program instructions may be coded by a programming language, which may be a high-level programming language, such as C, Java, etc., or a low-level programming language, such as a machine language, or an assembler.
  • the electronic digital computer may also have an operating system, which may provide system services to a computer program written with the program instructions.
  • the memory may be a volatile or a non-volatile memory, for example EEPROM, ROM, PROM, RAM, DRAM, SRAM, firmware, programmable logic, etc.
  • An embodiment provides a computer program embodied on a distribution me- dium, for example a non-transitory computer readable storage medium, comprising program instructions which, when loaded into an electronic apparatus, cause the CPU to perform according to an embodiment of the present invention.
  • the computer program may be in source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, which may be any entity or device capable of carrying the program.
  • carrier include a record medium, computer memory, read-only memory, electrical carrier signal, telecommunications signal, and software distribution package, for example.
  • the computer program may be executed in a single electronic digital computer or it may be distributed amongst a number of computers.
  • the computer program may be in source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, which may be any entity or device capable of carrying the program.
  • carrier include a record medium, computer memory, read-only memory, electrical carrier signal, telecommunications signal, and software distribution package, for example.
  • the computer program may be executed in a single electronic digital computer or processor or it may be distributed amongst a number of computers or processors.
  • an apparatus implementing one or more functions described with an embodiment comprises not only prior art means, but also means for determining a need to perform a handover of a subscriber terminal in a mobile communications network, said subscriber terminal participating in a voice group call as a talker, obtaining a subscriber identifier of the subscriber terminal, causing to transmit a message towards a target mobile switching center, said message including the obtained subscriber identifier, for performing the hand- over from a source mobile switching center to a target mobile switching center in the communications network.
  • an apparatus implementing one or more functions described with an embodiment comprises not only prior art means, but also means for obtaining a message indicating a request for a handover of a subscriber terminal in a mobile communications network, said subscriber terminal participating in a voice group call as a talker, from a source mobile switching center to a target mobile switching center in the mobile communications network, executing the handover, obtaining a message indicating a completion of the handover, obtaining a subscriber identifier of the subscriber terminal from the message indicating the request for the handover or, requesting the sub- scriber identifier from the subscriber terminal in response to a completion of the handover.
  • the various means comprise means for implementing functionality of a corresponding apparatus described with an embodiment and it may comprise separate means for each separate function, or means may be configured to perform two or more functions.
  • these techniques may be implemented in hardware (one or more apparatuses), firmware (one or more apparatuses), software (one or more modules), or combinations thereof.
  • firmware or software implementation can be through modules (e.g., procedures, functions, and so on) that perform the functions described herein.
  • the software codes may be stored in any suitable, processor/computer-readable data storage medium(s) or memory unit(s) or article(s) of manufacture and executed by one or more processors/computers.
  • the data storage medium or the memory unit may be implemented within the processor/computer or external to the processor/computer, in which case it can be communicatively coupled to the processor/computer via various means as is known in the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé consistant à déterminer un besoin de mettre en œuvre un transfert d'un terminal d'abonné dans un réseau de communication mobile, ledit terminal d'abonné participant à un appel de groupe vocal en tant qu'interlocuteur, à obtenir un identifiant d'abonné du terminal d'abonné, à produire une transmission d'un message vers un centre de commutation mobile cible, ledit message comprenant l'identifiant d'abonné obtenu, en vue de mettre en œuvre le transfert à partir d'un centre de commutation mobile source vers un centre de commutation mobile cible dans le réseau de communication.
EP14704091.9A 2014-01-28 2014-01-28 Transfert de terminal d'abonné de réseau de communication mobile Withdrawn EP3100513A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/051560 WO2015113586A1 (fr) 2014-01-28 2014-01-28 Transfert de terminal d'abonné de réseau de communication mobile

Publications (1)

Publication Number Publication Date
EP3100513A1 true EP3100513A1 (fr) 2016-12-07

Family

ID=50097654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14704091.9A Withdrawn EP3100513A1 (fr) 2014-01-28 2014-01-28 Transfert de terminal d'abonné de réseau de communication mobile

Country Status (3)

Country Link
EP (1) EP3100513A1 (fr)
CN (1) CN106465213A (fr)
WO (1) WO2015113586A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018195858A1 (fr) * 2017-04-27 2018-11-01 海能达通信股份有限公司 Procédé de commutation de cellule d'appel de groupe, et station de base
JP7019534B2 (ja) * 2018-08-22 2022-02-15 三菱製紙株式会社 炭素繊維不織布複合体
CN114143840B (zh) * 2020-09-04 2023-11-17 华为技术有限公司 通信方法及装置
CN114554428B (zh) * 2020-11-25 2023-03-21 成都鼎桥通信技术有限公司 功能号码的处理方法、装置和设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100040020A1 (en) * 2008-08-18 2010-02-18 Motorola, Inc. Method and apparatus for inter-technology handoff of a user equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPQ743500A0 (en) * 2000-05-11 2000-06-01 Telefonaktiebolaget Lm Ericsson (Publ) Handover method and apparatus for voice group calls in a mobile communications system
US6917810B2 (en) * 2001-12-05 2005-07-12 Telefonaktiebolaget Lm Ericsson (Publ) Optimization or circuit call setup and delivery associated with inter-MSC packet data handoff
CN100349483C (zh) * 2004-10-26 2007-11-14 华为技术有限公司 基于gsm的集群数字***建立私密呼叫业务的方法
CN101370266B (zh) * 2007-08-19 2013-03-20 华为技术有限公司 切换方法、终端重新附着方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100040020A1 (en) * 2008-08-18 2010-02-18 Motorola, Inc. Method and apparatus for inter-technology handoff of a user equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2015113586A1 *

Also Published As

Publication number Publication date
CN106465213A (zh) 2017-02-22
WO2015113586A1 (fr) 2015-08-06

Similar Documents

Publication Publication Date Title
US11751106B2 (en) Preemptive handover preparation and tracking/paging area handling and intelligent route selection in a cellular network
JP7218835B2 (ja) 無線端末及びその方法
US11825404B2 (en) Radio access network node, radio terminal, and methods and non transitory computer-readable media therefor
US11483065B2 (en) Wireless communications apparatus and methods
US9055518B2 (en) Resource sharing in communications systems
EP2391166B1 (fr) Procédés, système et appareil d'interconnexion de différents réseaux de communication sans fil
US7065062B2 (en) Mobile IP mobility management at dormant hand-over in CDMA IP-based cellular packet-data network
EP3554139B1 (fr) Procédé de traitement d'accès, station de base et terminal de communication mobile
WO2009024094A1 (fr) Système de communication, procédé et appareil de processus de transfert de réseau
WO2016095530A1 (fr) Procédé d'appel et système d'évolution à long terme adaptés aux chemins de fer
WO2015113586A1 (fr) Transfert de terminal d'abonné de réseau de communication mobile
CN113692063A (zh) 一种终端接入网络的方法及装置
WO2016062217A1 (fr) Dispositif, système et procédé de mise à jour de zone de suivi
US8599717B2 (en) Method for stopping a tracing flow
US9426696B2 (en) Methods, apparatuses, system, related computer program product for handover procedures
RU2569497C1 (ru) Способ мобильной связи
WO2023120174A1 (fr) Station de base, nœud de réseau, premier nœud de réseau central, second nœud de réseau central et procédés réalisés par ceux-ci
EP4297481A1 (fr) Procédé de communication pour mbs
US9332482B2 (en) Method for communication of base station, terminal and relay station
CN117135776A (zh) 一种通信方法及装置
CN117202109A (zh) 宽带集群***中基于位置的呼叫方法及装置
JP2021535657A (ja) 非地上系ネットワーク通信
KR20130015963A (ko) 지능적 서비스를 제공하는 통합 기지국 장치 및 그 방법
JPWO2020166078A5 (ja) 端末、無線通信方法、基地局及びシステム

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20160829

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20170802

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180213