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CN1656840A - Systems and methods for performing handover between circuit-switched and packet-switched environments - Google Patents

Systems and methods for performing handover between circuit-switched and packet-switched environments Download PDF

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Publication number
CN1656840A
CN1656840A CN01814713.5A CN01814713A CN1656840A CN 1656840 A CN1656840 A CN 1656840A CN 01814713 A CN01814713 A CN 01814713A CN 1656840 A CN1656840 A CN 1656840A
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China
Prior art keywords
switching
environment
packet
switched
mobile device
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CN01814713.5A
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R·巴蒂亚
J·克兰斯莫
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]

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

Abstract

本发明提供一种执行从电路交换环境到分组交换环境的切换的方法。所述方法包括在位于电路交换环境的移动交换中心接收一个切换请求；将一个切换命令从移动交换中心发送到移动设备；以及将一个切换选址猝发从移动设备发送到位于分组交换环境中的信令节点。

Figure 01814713

The present invention provides a method for performing a handover from a circuit-switched environment to a packet-switched environment. The method comprises receiving a handover request at a mobile switching center located in the circuit-switched environment; sending a handover command from the mobile switching center to a mobile device; and sending a handover addressing burst from the mobile device to a signaling node located in the packet-switched environment.

Figure 01814713

Description

Be used between circuit-switched context and packet switching environment, carrying out the system and method that switches
Technical field
The present invention relates generally to field of telecommunications, more specifically relate to be used between circuit-switched context and packet switching environment, carry out the system and method that switches.
Background technology
In current field of telecommunications, there are circuit-switched context and packet switching environment." circuit switching " method is meant a kind of like this switching method, and promptly wherein a direct transmission path between the terminal that relates to all is available for the duration of calling out, and no matter whether transmit information." packet switching " method is meant a kind of like this switching method, and promptly wherein message is divided into grouping and by network link route is carried out in described grouping by means of being included in the destination information in the packets headers.Till described grouping is stored path in the direction of hope and becomes the free time.
The typical phenomenon of cellular system is the change of base station, promptly switch, one of them given portable terminal moves to the transmitting boundary of second base station from the transmitting boundary of first base station, thereby the quilt of the transfer of data between terminal that is considered basically and the network is by new base station route.The accurate synchronization of the operation between transfer period is normally impossible, and this can cause packet loss, duplicate or out-of-sequence.
Switching between the Circuit Switching Network and the packet switching network has increased the difficulty that obtains simultaneous operation between transfer period.Therefore, ability that need be from circuit-switched context to packet switching environment successful switch traffic carrying capacity.
Summary of the invention
The invention provides a kind of method that is used to carry out switching from circuit-switched context to the packet switching environment.This method can be included in the mobile switching centre that is arranged in circuit-switched context and receive handoff request, sends switching command and switch addressing with one to mobile device from mobile switching centre and burst and send to the signaling node that is arranged in the packet switching environment from mobile device.
The present invention also provides a kind of system, is used for the switching between executive circuit switched environment and the packet switching environment.Described system can comprise the one or more mobile switching centres that reside in the circuit-switched context.Described system also comprises the one or more signaling nodes that reside in the packet switching environment.Described signaling node can be communicated by letter with mobile switching centre.Described system can also comprise one or more mobile devices.Described mobile device can be communicated by letter with signaling node with mobile switching centre.Described mobile device can also be configured to both also operate in the packet switching environment in circuit-switched context.
Description of drawings
Schematic diagram among Fig. 1 is represented an embodiment who is used for the system of the switching between executive circuit switched environment and the packet switching environment of the present invention;
Schematic diagram among Fig. 2 is represented another embodiment that is used for the system of the switching between executive circuit switched environment and the packet switching environment of the present invention;
Signaling sequence figure among Fig. 3 represents a method that is used for the switching between executive circuit switched environment and the packet switching environment of the present invention; And
Signaling sequence figure among Fig. 4 represents another embodiment that is used for a method of the switching between executive circuit switched environment and the packet switching environment of the present invention.
Embodiment
Referring to Fig. 1, wherein show telecommunication system 100.Telecommunication system 100 has circuit-switched context 106 and packet switching environment 108.Described circuit-switched context can be common service telephone network, plain old telephone service etc.Described packet switching environment can be Internet protocol net, time division multiple access Access Network etc.Described environment all resides on the global system for mobile communications (GSM).
Mobile device 105 is provided among Fig. 1.Mobile device 105 may operate in circuit-switched context and the packet switching environment.Mobile device 105 is communicated by letter with the base transceiver station 110 in residing in circuit-switched context.Base transceiver station 110 is communicated by letter with base station controller 120.In the operating period of mobile device 105, from the signal strength signal intensity of the emission of mobile device 105 and quality by continuous measurement.When mobile device 105 was in busy pattern, these measurements for signal strength signal intensity and quality were measured on down link.With the measurement while of being undertaken by mobile device, service base transceiver station 110 is measured the signal strength signal intensity and the quality of the emission of the mobile device 105 on up link.
After the measurement from base transceiver station 110 and mobile device 105 was collected, they were sent to base station controller 120.Base station controller is communicated by letter with base transceiver station.Therefore, at first be sent to base transceiver station 110, be forwarded to base station controller 120 from base transceiver station 110 then from the measurement of mobile device 105.According to the measurement result of being undertaken by base transceiver station 110 and mobile device 105, whether base station controller 120 can determine to switch needs.Switch the process that changes sub-district or channel during the calling only be meant in GSM.If base station controller 120 determines that a switching needs, then base station controller 120 determines which sub-district or channel should provide this switching then.Determine which sub-district or channel can carry out the process of switching and be known as the location.
Base station controller 120 is communicated by letter with mobile switching centre 130.A switching is the measurement that needs if base station controller 120 receives indication, and then base station controller 120 can send to mobile switching centre 130 with a message.Because telecommunication system 100 comprises circuit switching and packet switching environment, be the switching of packet switching so base station controller 120 can ask to switch.Base station controller 120 can send to mobile switching centre 130 with the switching message of a packet switching, causes mobile switching centre 130 to attempt to finish this switching.
Mobile switching centre 130 can be configured to be identified for the packet switching address of mobile device 105, and is configured to circuit-switched messages is converted into packet switched message.In case the corresponding signaling node 140 that mobile switching centre 130 has determined to be used for the packet switching address of mobile device 105 and determined to be used at the packet switching environment mobile device 105, then mobile switching centre just can send a switching command 135 to the base transceiver station 137 corresponding to described signaling node that is arranged in the packet switching environment.Then, base transceiver station 137 sends to mobile device 105 with a switching command.Then, mobile device 105 expectations receive the switching from circuit-switched context to the packet switching environment.
At this moment, mobile device 105 can switch to packet switched mode from circuit switched mode.In case mobile device 105 has entered packet switched mode, mobile device 105 just can be burst an addressing and be sent it back signaling node 140.Signaling node 140 receive burst from the addressing of mobile device 105 after, signaling node 140 sends a request to mobile switching centre 130, so that require mobile switching centre's transtation mission circuit to exchange messages or switch described message.Then, mobile switching centre 130 is suitable for described message is converted into packet switched message and described packet switched message is sent to signaling node 140 from telephone exchange.In case signaling node 140 receives described packet switched message, signaling node 140 just sends described message at the grouped channels of bursting indicated by the addressing that sends from mobile device 105.
Referring to Fig. 2, another embodiment of system of the present invention is expressed as 200 generally.Described system comprises the mobile device 205 of communicating by letter with packet switching environment 108 with circuit-switched context 106.Circuit-switched context comprises the base transceiver station 210 of communicating by letter with base station controller 215, described base station controller 215 and then communicate by letter with mobile switching centre 225 again.Mobile switching centre 225 can communicate by letter with database 230.Database 230 can be stored about the information such as the packet switching address of the mobile device of mobile device 205.Equally, mobile switching centre 225 can communicate by letter with gateway 250.Gateway 250 can be a media gateway.Gateway 250 can be configured to circuit-switched messages is converted into packet switched message.The packet switching environment comprises signaling node 245 and base transceiver station 240.Signaling node 245 and base transceiver station 240 can mutual communication.
In case base station controller 215 determines that mobile device 205 needs to switch, then base station controller just sends to mobile switching centre 225 with a handoff request.When mobile switching centre 225 received handoff request 220, mobile switching centre 225 sent to database 230 with an Address requests, so that be identified for the packet switching address of mobile device 205.Then, database 230 turns back to mobile switching centre 225 with a message, and this message indication is used for the correct packet switching address of mobile device 205 and the corresponding signaling node 245 that is used for equipment 205.The packet switching address can be Internet protocol address, address etc. X.25.
Then, mobile switching centre 225 can send a switching command to the base transceiver station 240 that is arranged in packet switching environment 208.Switching command can be forwarded to mobile device 205 by base transceiver station 240.Then, shown in line 260, mobile device 205 is burst an addressing and is sent to its corresponding signaling node 245.Then, signaling node 245 sends a request to mobile switching centre 225, requires message to be sent to signaling node 245.
Mobile switching centre 225 can send a message to gateway 250.Gateway can be converted into packet switched message from circuit-switched messages with message, then forwards is arrived signaling node 245.In case packet switched message is received by signaling node 245, signaling node 245 just sends to packet switched message mobile device 205.
Referring to Fig. 3, wherein show the signaling sequence of the method for the switching of execution from circuit-switched context to the packet switching environment.As shown in Figure 3, have execution from circuit-switched context to the switching of packet switching environment needed four major parts.Described part is base station controller 305, mobile switching centre 310, signaling node 315 and mobile device 320.These parts all are similar to above about Fig. 1 and the described feature of Fig. 2.
As shown in Figure 3, a packet switching handoff request 325 is sent to mobile switching centre 310 from base station controller 305.When base station controller determines that by measuring mobile device 320 no longer can send signal effectively in its current state, just send the packet switching handoff request.When mobile switching centre 310 received packet switching handoff request 325, mobile switching centre 310 just sent to mobile device 320 with a packet switching switching command 330.Packet switching switching command 330 is not by signaling node 315.But packet switching switching command 330 is the direct communications between mobile switching centre 310 and the mobile device 320.
After mobile device 320 received packet switching switching command 330, mobile device was just burst an addressing and 335 is sent to signaling node 315.Described addressing is burst and is indicated the grouped channels that can be used for from mobile switching centre's 310 switchings.Burst 335 in case signaling node 315 receives addressing, signaling node 315 just sends a route requests 340 to mobile switching centre 310, arrives signaling node 315 so that require mobile switching centre 310 to send described message or switch described message.After mobile switching centre 310 received described route requests, mobile switching centre 310 just arrived signaling node 315 with described message route 345.Can be according to the configuration of mobile switching centre 310 and signaling node 315 and message is converted into packet switched message from circuit-switched messages at described mobile switching centre 310 or signaling node 315.In case described message mobile device 320 receives 350, mobile device 320 just sends a handoff completion message 355 to base station controller 305.
Referring to Fig. 4, show the signaling sequence of another embodiment of a method of the present invention generally.Once more, base station controller 400, mobile switching centre 410, signaling node 420 and mobile device 430 are provided.In addition, table look-up (lookup) 415 and base transceiver station 425 of database also is provided.When base station controller 400 determined that mobile device 430 needs to switch, base station controller 405 just sent a grouping handoff request 435 to mobile switching centre 410.When mobile switching centre 410 received switching packet switching request 435, mobile switching centre 410 just sent a packet switching Address requests 440 and tables look-up 415 to database, so that request is corresponding to the packet switching address of mobile device 430.Database is tabled look-up and 415 a message 445 is turned back to mobile switching centre 410.Return messages 445 can contain the packet switching address of mobile device 430 and corresponding signaling node 420.
After mobile switching centre 410 received 415 the return messages 445 of tabling look-up from database, mobile switching centre 410 just sent a packet switching switching command 450 to the base transceiver station 425 that resides in the packet switching environment.Then, base transceiver station 425 sends to mobile device 430 with packet switching switching command 455.After mobile device 430 received packet switching switching command 455, mobile device 430 was burst an addressing and 460 is sent to signaling node 420.Burst 460 in case signaling node 420 receives addressing, signaling node 420 just can ask 465 message to be sent from mobile switching centre 410.Then, mobile switching centre 410 sends 470 to signaling node 420 with described message.Signaling node 420 and then again message is sent 4475 to mobile device 430 by base transceiver station 425.After mobile device 430 received message, mobile device 430 sent to initial base station controller 400 with a handoff completion message 480.

Claims (24)

1. method that is used to carry out switching from circuit-switched context to the packet switching environment, described method comprises step:
Receive a handoff request in the mobile switching centre that is positioned at circuit-switched context;
A switching command is sent to a mobile device from described mobile switching centre; And
Switching addressing with one bursts and sends to a signaling node that is arranged in the packet switching environment from described mobile device.
2. the method for claim 1 also comprises step: a message is routed to the packet switching environment from circuit-switched context.
3. method as claimed in claim 2, wherein the route step comprises that indication mobile switching centre sends to signaling node with described message.
4. method as claimed in claim 2, wherein the route step comprises described message is converted into packet switched message from circuit-switched messages.
5. method as claimed in claim 4, wherein switch process is carried out by a gateway.
6. method as claimed in claim 5, wherein said gateway is a media gateway.
7. the method for claim 1, wherein said signaling node is a service universal packet wireless business affair signaling node.
8. the method for claim 1, wherein mobile device uses General Packet Radio Service System to operate.
9. the method for claim 1, wherein the packet switching environment is that time division multiple access inserts environment.
10. the method for claim 1, wherein the packet switching environment is the Internet protocol environment.
11. the method for claim 1, wherein the packet switching environment is an environment X.25.
12. the method for claim 1 also comprises step: identification is for the mobile device of a switching of its needs.
13. method as claimed in claim 12, wherein identification step also comprises the packet switching address of determining mobile device.
14. method as claimed in claim 13, wherein the packet switching address is an Internet protocol address.
15. method as claimed in claim 13, wherein the packet switching address is address X.25.
16. method as claimed in claim 13, wherein determining step is used a database and carries out.
17. a system that is used for the switching between executive circuit switched environment and the packet switching environment comprises:
At least one resides in the mobile switching centre in the circuit-switched context;
At least one resides in the signaling node in the packet switching environment, and this signaling node is communicated by letter with described mobile switching centre; And
At least one mobile device, this mobile device are communicated by letter with signaling node and are configured to both operate in the circuit-switched context with described mobile switching centre and also operate in the packet switching environment.
18. system as claimed in claim 17, wherein mobile switching centre is configured to circuit-switched messages is converted into packet switched message.
19. system as claimed in claim 17, wherein signaling node is configured to circuit-switched messages is converted into packet switched message.
20. system as claimed in claim 17, wherein signaling node is the service GPRS signaling node.
21. system as claimed in claim 17, wherein mobile device operation is in General Packet Radio Service System.
22. system as claimed in claim 17, wherein the packet switching environment is the Internet protocol environment.
23. system as claimed in claim 17, wherein the packet switching environment is an environment X.25.
24. system as claimed in claim 17, wherein the packet switching environment is that time division multiple access inserts environment.
CN01814713.5A 2000-07-03 2001-07-02 Systems and methods for performing handover between circuit-switched and packet-switched environments Pending CN1656840A (en)

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US09/609,517 2000-07-03

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WO2011035740A1 (en) * 2009-09-28 2011-03-31 华为终端有限公司 Method and device for establishing or modifying local ip access bearer
CN101483896B (en) * 2008-01-08 2011-06-08 华为技术有限公司 Method and equipment for switching to CS network, measuring CS network, and realizing CS service
CN101305637B (en) * 2005-11-10 2011-09-21 法国电信公司 Telecommunications apparatus and method
CN101459570B (en) * 2007-12-14 2012-01-04 株式会社Ntt都科摩 Mobile communication terminal, mobile switching center, message storage device, and message storing method
CN101690361B (en) * 2006-01-05 2012-07-04 Lg电子株式会社 Method for handover in mobile communication system
US8570956B2 (en) 2006-06-21 2013-10-29 Lg Electronics Inc. Method of communicating data in a wireless mobile communications system using message separation and mobile terminal for use with the same
US8638707B2 (en) 2006-06-21 2014-01-28 Lg Electronics Inc. Method for supporting quality of multimedia broadcast multicast service (MBMS) in mobile communications system and terminal thereof
US8644250B2 (en) 2006-01-05 2014-02-04 Lg Electronics Inc. Maintaining communication between mobile terminal and network in mobile communication system
US8750217B2 (en) 2006-01-05 2014-06-10 Lg Electronics Inc. Method for scheduling radio resources in mobile communication system
US8971288B2 (en) 2006-03-22 2015-03-03 Lg Electronics Inc. Method of supporting handover in a wireless communication system
US9456455B2 (en) 2006-01-05 2016-09-27 Lg Electronics Inc. Method of transmitting feedback information in a wireless communication system
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US9456455B2 (en) 2006-01-05 2016-09-27 Lg Electronics Inc. Method of transmitting feedback information in a wireless communication system
CN101690361B (en) * 2006-01-05 2012-07-04 Lg电子株式会社 Method for handover in mobile communication system
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US8638707B2 (en) 2006-06-21 2014-01-28 Lg Electronics Inc. Method for supporting quality of multimedia broadcast multicast service (MBMS) in mobile communications system and terminal thereof
US8570956B2 (en) 2006-06-21 2013-10-29 Lg Electronics Inc. Method of communicating data in a wireless mobile communications system using message separation and mobile terminal for use with the same
WO2009026835A1 (en) * 2007-08-23 2009-03-05 Huawei Technologies Co., Ltd. A system, apparatus and method for user service handover
CN101459570B (en) * 2007-12-14 2012-01-04 株式会社Ntt都科摩 Mobile communication terminal, mobile switching center, message storage device, and message storing method
CN101483896B (en) * 2008-01-08 2011-06-08 华为技术有限公司 Method and equipment for switching to CS network, measuring CS network, and realizing CS service
US8743829B2 (en) 2009-09-28 2014-06-03 Huawei Device Co., Ltd. Method and device for establishing or modifying local IP access bearer
WO2011035740A1 (en) * 2009-09-28 2011-03-31 华为终端有限公司 Method and device for establishing or modifying local ip access bearer
CN108429849A (en) * 2017-02-15 2018-08-21 北京小米移动软件有限公司 Data service processing method, device and equipment

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JP2004502388A (en) 2004-01-22
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WO2002003720A2 (en) 2002-01-10
AU2001271777A1 (en) 2002-01-14

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