CN101031146B - Method, apparatus and system for switching network - Google Patents
Method, apparatus and system for switching network Download PDFInfo
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- CN101031146B CN101031146B CN2007100647505A CN200710064750A CN101031146B CN 101031146 B CN101031146 B CN 101031146B CN 2007100647505 A CN2007100647505 A CN 2007100647505A CN 200710064750 A CN200710064750 A CN 200710064750A CN 101031146 B CN101031146 B CN 101031146B
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Abstract
The method comprises: during a call process, if a terminal device needs to be switched from an area covered by a first network to an area covered by a second network, it can directly initiates a call to the opposite end in order to establish voice channel; the call of the terminal is switched to said voice terminal. By the invention, even the terminal device not supporting the function of reporting the measuring message, it can also realize the network switch function.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of network handoff technique.
Background technology
In wireless telecommunication system, terminal equipment need be connected by certain base station cell of wireless signal and wireless network, to converse accordingly.
When terminal equipment when certain cell range moves to another sub-district, do not interrupt for keeping conversation, then being connected between terminal equipment and base station cell need switch to the another one base station cell.
Along with development of Communication Technique, the terminal equipment of supporting the heterogeneous networks access function is in moving process, may need from a kind of base station cell of network switches to the base station cell of another kind of network, to communicate, promptly need in different networks, realize corresponding network handoff functionality.
At present, for realizing corresponding network handoff functionality, the concrete implementation that adopts is: in Access Network, according to terminal equipment detect and the information that the reports objective network after determining to switch in Target cell, afterwards, carry out corresponding handover operation according to the target cell information in the objective network of determining.
Switching to the 2G network with terminal equipment from 3G network is example, and the specific implementation process of above-mentioned implementation may further comprise the steps:
(1) in 3G network, RNC (radio network controller) detects this district wireless signals and the adjacent cell wireless signal that reports according to terminal equipment, definite Target cell that will switch, and to 3GMSC (mobile switching centre of 3G network) initiation handoff request;
(2) 3G MSC finds target 2G MSC (mobile switching centre of 2G network) according to the target cell information in the handoff request of receiving, initiates handoff request;
(3) BSC (base station controller) the request channel of 2G MSC in the 2G network, and distribute Handover Number, and the result is returned to 3G MSC;
(4) 3G MSC sets up by the session channel of 3G MSC to 2G MSC according to the Handover Number of receiving; And the BSC channel issued terminal equipment by switching command
(5) terminal equipment is gone into network at the BSC of 2G network side joint, and by 2G MSC notice 3G MSC handover success;
(6) after 3G MSC determines handover success, then discharge the channel resource that this terminal equipment took originally under RNC, finish handover operation.
As can be seen, in above-mentioned implementation, for triggering handoff procedure, network side need obtain the measurement message that it reports from terminal equipment, to analyze the target cell information after obtaining to switch accordingly.
Yet, under some scene in actual application, support the terminal equipment of many network insertions not support to report the function of the measurement message that comprises another network cell information, or network can not be resolved the cell information of another network, this just makes above-mentioned handoff procedure to realize, promptly under some scene, can't realize the network handoff functionality.
Summary of the invention
Implementation method and equipment and system that embodiments of the invention provide a kind of network to switch, thus can not support under the situation of reporting measurement message function at terminal equipment, still can realize corresponding network handover operation for the terminal equipment in the conversation.
The implementation method that the embodiment of the invention provides a kind of network to switch comprises:
If the terminal equipment in conversation or the calling procedure need switch to second network's coverage area from first network's coverage area, the core network entity in first network and being between the terminal equipment in second network coverage area then, directly make a call, to set up speech channel to the opposite end;
On the speech channel that the conversation or the calling of terminal equipment switched to foundation.
The embodiment of the invention provides a kind of terminal equipment, comprising:
First switching channel is set up the unit, the terminal equipment of determining conversation or calling procedure is used for after need switch to second network's coverage area from first network's coverage area, receive the Handover Number information that first network is sent, and according to described Handover Number information in second network to first network-originated call, and the speech channel after set up switching;
First switches performance element, is used for current conversation or calling are switched to the speech channel that first switching channel is set up unit foundation.
The embodiment of the invention provides a kind of terminal equipment, comprising:
The 3rd switching channel is set up the unit, is used to receive the calling that is used to switch that the first server network entity is sent by second network, and automatic-answering back device, to set up the speech channel between first network and second network;
The 4th switches performance element, is used for current conversation or calling are switched to the speech channel that the 3rd switching channel is set up unit foundation.
The embodiment of the invention provides a kind of core network device, is used for calling out control, comprises
Second switching channel is set up the unit, the terminal equipment of determining conversation or calling procedure is used for after need switch to second network's coverage area from first network's coverage area, handle the first server network entity and be in the calling of directly initiating between the terminal equipment in second network coverage area, set up the speech channel between two networks to the opposite end;
Second switches performance element, is used for the conversation or the calling of described terminal equipment are switched to the speech channel that described second switching channel is set up unit foundation.
The realization system that the embodiment of the invention provides a kind of network to switch comprises:
The first handover operation unit, be arranged in first network, the terminal equipment of determining conversation or calling procedure is used for after need switch to second network's coverage area from first network's coverage area, handle the first server network entity and be in the calling of directly initiating between the terminal equipment in second network coverage area to the opposite end, set up speech channel, and described terminal equipment switched to second network's coverage area from the first network overlay area by described speech channel:
The second handover operation unit, be arranged in second network, be used for and the described first handover operation unit between mutual call information, set up the speech channel between first network and second network, and the conversation or the calling of described terminal equipment switched on the described speech channel.
The technical scheme that is provided by the embodiment of the invention described above as can be seen, owing to adopted between second network after first network and the switching before switching by method of calling at first network and be between the terminal equipment in second network and set up speech channel, like this, first network need not the information according to the network (being objective network) behind definite corresponding switching of the metrical information of terminal equipment in handoff procedure, therefore, the embodiment of the invention can solve the problem that prior art exists, even make terminal equipment not support to measure the reporting functions of message, can realize corresponding network handoff functionality equally, guarantee the uninterrupted of terminal equipment conversation.
Description of drawings
Fig. 1 is terminal equipment UE communication process schematic diagram in the TD overlay area;
Fig. 2 is the process schematic diagram one that the terminal in conversation or the calling procedure is carried out handover operation in the embodiment of the invention;
The handover operation flow chart one that Fig. 3 provides for the embodiment of the invention;
The terminal communication process schematic diagram of Fig. 4 after for the handover operation of carrying out the embodiment of the invention and providing;
Fig. 5 is the process schematic diagram two that the terminal in conversation or the calling procedure is carried out handover operation in the embodiment of the invention;
The handover operation flowchart 2 that Fig. 6 provides for the embodiment of the invention;
The structural representation one of the terminal equipment that Fig. 7 a provides for the embodiment of the invention;
The structural representation two of the terminal equipment that Fig. 7 b provides for the embodiment of the invention;
The network equipment that Fig. 8 provides for the embodiment of the invention and the structural representation one of system;
The network equipment that Fig. 9 provides for the embodiment of the invention and the structural representation two of system.
Embodiment
For realize conversing or calling procedure in terminal equipment switch to the base station cell of another kind of network from a kind of base station cell of network, at first set up switching channel (being speech channel) between the terminal equipment in the network after having adopted the network before switching in the embodiment of the invention and being in switching, carry out corresponding conversation so that the conversation of terminal equipment is switched to by the switching channel of setting up under the base station cell of new network by method of calling.
In embodiments of the present invention, described terminal equipment can be UE (subscriber equipment), MS (travelling carriage), mobile phone, WiFi (WLAN standard) terminal, or the like.
Described terminal equipment is specifically as follows dual-card dual-standby terminal equipment, with the terminal equipment of supporting TD (Time Division-Synchronous Code Division Multiple Access) network and GSM (global system for mobile communications) network simultaneously is example, it promptly is registered among the TD-MSC (mobile switching centre of TD network), and a TD number is arranged in TD-MSC; Simultaneously, also be registered among the GSM-MSC (mobile switching centre of GSM network), a GSM number is arranged in GSM-MSC.This dual-card dual-standby terminal equipment externally only embodies a number, as TD number or GSM number.Is example to adopt the TD number as external one number, and then the corresponding communication processing procedure comprises:
If terminal equipment when TD network receipt of call, then can carry out according to normal called flow;
If terminal equipment is not at the TD network, then can be by TD number Call Forwarding on mobile subscriber Not Reachable being set to the GSM number, suppose it is to take place then to make amendment (the modification connected number is TD-MSC), so that caller is only embodied a called number for the signaling that GSM-MSC returns not as good as preceding commentaries on classics at TD-MSC;
If terminal equipment, carries out according to normal flow during as caller at the TD network;
If terminal equipment during as caller, then by the intelligence number of changing, is revised as caller the TD number of corresponding TD network at the GSM network.
The implementation of other dual-card dual-standby terminal equipment is similar with it, so do not describe in detail one by one.
In embodiments of the present invention, also can adopt the terminal equipment of the support multi-network communication of otherwise in heterogeneous networks, carrying out communication service.
In handoff process, according to the difference of the mode of setting up switching channel, the embodiment of the invention specifically can adopt following two kinds of implementations.
(1) first kind of implementation
In this implementation, the terminal equipment in conversation or the calling procedure need switch to the overlay area of second network from the overlay area of first network, and the concrete implementation that adopts comprises:
The first step, after the access network entity in the terminal equipment or first network determined that described terminal equipment need be carried out handover operation, then the core network entity in first network sent handoff request;
Described access network entity can but be not limited to: RNC and/or NodeB (base station), BSC and/or BTS (base station system), or the like;
Second step, the entity that core network entity in first network (as the switch of MSC, MSCe (mobile switching center emulation), MSC Server (MSC server) or soft-exchange construction etc.) switches as control is after receiving handoff request, send Handover Number information to terminal equipment, described Handover Number is used for identifying the first network core network entity and corresponding terminal equipment;
The 3rd step, after terminal equipment obtains described Handover Number information, in second network, make a call by the core network entity of the core network entity in second network (as switch of MSC, MSCe, MSC SerVer or soft-exchange construction etc.) in first network, set up the speech channel between first network and second network, so that carry out follow-up handover operation;
The 4th step switched to the ongoing conversation of described terminal equipment on first network and the speech channel between second network of foundation, realized described handover operation.
After finishing above-mentioned switching,, then specifically can adopt any realization in following two kinds of schemes if terminal equipment continues to move and need once more to switch:
(1) a kind of scheme is: still adopt the processing procedure in above-mentioned four steps of the first step to the to carry out corresponding handover operation, at this moment, the MSC that links to each other with terminal equipment is responsible for the distribution of Handover Number as the MSC of the current switching of control, and the operation of handoff procedure; In this scheme, the Handover Number at each handoff procedure specific assigned just can discharge after each handover operation is finished accordingly.
(2) another kind of scheme is: terminal equipment is remembered the Handover Number of distribution when switch the first time all the time during whole calling, and the MSC that control is switched is always same MSC (controlling the MSC of switching when promptly switching for the first time); Concrete handoff procedure comprises:
When terminal equipment judge need switch after, then use this Handover Number as called number make a call at switching target small area (this Handover Number specifically can be kept in the terminal equipment) automatically; Described calling will be routed to the MSC that described control is switched; The MSC that this control is switched is after receiving that a called number is the calling of Handover Number, can be associated with corresponding terminal equipment by described Handover Number, after the secret number of this terminal equipment of checking is correct, the MSC that this control is switched is in call signaling response message last time, so that former speech path channel is switched on the new speech path channel, and discharge former speech path channel (for example, can notify this to switch by the MSC that control is switched before MSC of terminal equipment place network carry out corresponding resource release operations); Terminal equipment is after obtaining replying on new the calling, and switching channel and discharges former wireless channel carrying to new calling.
Under this scheme (2), the MSC that control is switched distributes a Handover Number when switching for the first time, could discharge this Handover Number behind end of calling, comes so need increase the length of Handover Number, to guarantee having enough Handover Number resources to use.
In this scheme (2), set up call path because the MSC of current terminal equipment place network directly switches MSC with same control all the time, thereby can effectively avoid speech channel too much circuitous.
(2) second kinds of implementations
In this implementation, the terminal equipment in conversation or the calling procedure need switch to the overlay area of second network from the overlay area of first network, and the concrete implementation that adopts comprises:
The first step, after access network entity in the terminal equipment or first network determined that described terminal equipment need be carried out handover operation, then the core network entity in first network (as the switch of MSC, MSCe, MSCServer or soft-exchange construction etc.) sent handoff request;
Second step, after core network entity in first network (as switch of MSC, MSCe, MSC Server or soft-exchange construction etc.) receives handoff request, make a call to terminal equipment by the core network entity in second network, thereby set up speech channel between first network and second network;
In this step, after described terminal equipment is received the calling of the core network entity initiation in first network, if determine this calling for after the calling that is used to switch according to the handoff parameter sign in calling out, then No ringing and echo reply message automatically;
The 3rd step switched to ongoing conversation of described terminal equipment or calling on first network and the speech channel between second network of foundation, realized described handover operation.
The concrete adaptable network environment of the embodiment of the invention includes but not limited to: GSM (global system for mobile communications) network, UMTS (universal mobile telecommunications system) network, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) network, CDMA (sign indicating number branch multiaddress) network, CDMA2000, WiFi (WLAN standard) network, WiMax (micro-wave access to global intercommunication) network etc.Be described first network and second network can but be not limited to wherein any two kinds of networks.
In embodiments of the present invention, described core network entity can be the switch of MSC, MSCe, MSCServer or soft-exchange construction, and, at the core network entity that switches source (i.e. first network) and the core network entity of target side (i.e. second network) can be same entity device, it also can be different entity devices, for example, can be same switch, also can be different switches.
In the processing scheme that the invention described above embodiment provides, owing to adopted the implementation of setting up speech channel between terminal equipment and the source network (switching preceding network) in being in objective network (network after the switching), make to need not the network information that decides specific aims in the handoff procedure, thereby overcome problems of the prior art.
For ease of understanding to the embodiment of the invention, below will be with terminal equipment by TD-SCDMA (TimeDivision-Synchronous Code Division Multiple Access, Time Division-Synchronous Code Division Multiple Access) to switch to GSM (global system for mobile communications) network be example to network, and the concrete application of the embodiment of the invention is described.
In this Application Example, terminal equipment is supported in the access of TD-SCDMA network and GSM network simultaneously; And terminal equipment moves to the GSM network from the TD-SCDMA network in moving process gradually.In this process, corresponding network hand-off process mode mainly comprises following two kinds of specific implementations, will describe these two kinds of specific implementations respectively below.
Specific embodiment one
In this implementation, mainly be to realize corresponding handover operation by the mode that terminal equipment makes a call in objective network.
As shown in Figure 1, described terminal is at first carried out communication in the TD network, afterwards, moves to the marginal zone of TD network and GSM network, triggers corresponding handover operation process.
As shown in Figures 2 and 3, the specific implementation process of this implementation may further comprise the steps:
Step 11: after terminal equipment moved to the marginal zone of overlay area of current network, then the TD-MSC to the network at current place initiated handoff request;
Be specially: terminal equipment is by detecting TD-SCDMA network (being called for short the TD network) signal strength signal intensity of sub-district and the signal strength signal intensity of the neighbor cell in the GSM network, know that it will leave the area of coverage of TD network and enter the GSM network coverage area, perhaps, terminal equipment detects and need enter the sub-district of more preferably inserting (being the neighbor cell in the GSM network), then initiate handoff request to TD-MSC by RNC, in Fig. 3, corresponding RNS comprises RNC and base station;
In this step, described handoff request message can be a redetermination message, also can be specific USSD (unstructured supplementary data traffic) message;
Need to prove, in this step, described handoff request also can be directly initiated by RNC, specifically is to obtain the edge that terminal equipment is in the TD network coverage area by the wireless signal that sends of RNC by the analyzing and testing terminal equipment, then initiates handoff request to TD-MSC.
After step 12:TD-MSC receives described handoff request, distribute a Handover Number for this switches, and this Handover Number is sent to terminal equipment by switching command;
Described Handover Number can be used to route the call to a number of controlling on the TD-MSC that switches, by the interim distribution of TD-MSC and related with the current terminal equipment that switches;
In this step, described switching command message can be a redetermination message, also can be specific USSD message.
Step 13: terminal equipment promptly in the GSM network, makes a call automatically at objective network, and the called number of this calling is described Handover Number;
In order to prevent the malice eavesdropping, called number can be the combination of the secret number of Handover Number and terminal equipment, for example, described secret number can adopt back 4 bit digital of IMSI (permanent user ID), perhaps also can only know not the number that can be known by the third party for the network of Handover Number correspondence and terminal equipment arbitrarily for other;
In this step, after the GSM network is received the calling that is used to switch of terminal equipment initiation, also send the message of allocated channel to terminal equipment, think that terminal equipment carries out channel assignment, is convenient to the handover operation of terminal equipment.
Step 14: the calling that terminal equipment is initiated is at first handled by GSM-MSC, and routes the call to TD-MSC;
On GSM-MSC, this calling of initiating for terminal equipment will be used as an ordinary call and handle, because corresponding called number is the described Handover Number that TD-MSC distributes, so GSM-MSC will be routed to TD-MSC with this calling by the junction call signaling;
In this step, do not have at GSM-MSC under the situation of user's registration information, this GSM-MSC specifically can determine the legitimacy of this calling by the legitimacy of verifying described Handover Number, and no longer the user who initiates this calling is carried out validation verification.
After step 15:TD-MSC receives that called number is the calling of described Handover Number, then be associated with the corresponding terminal equipment that is switching, carry out corresponding handover operation with conversation to corresponding terminal device by this Handover Number;
Be specifically as follows: after TD-MSC receives described calling, verify at first whether the secret number is correct, and after determining correctly, in call signaling response message last time, former speech path channel is switched on the new speech path channel, discharge former speech path channel by TD-MSC; Afterwards, GSM-MSC call establishment passage and in call signaling response message last time; Terminal equipment then switches voice channel to new calling after obtaining replying on new the calling; In addition, this TD-MSC also sends the message that discharges channel to terminal equipment, to discharge the former wireless channel carrying that takies of this terminal equipment.
Through after the above-mentioned processing, as shown in Figure 4, terminal equipment enters the GSM network and continues its ongoing conversation or calling procedure.
As can be seen, in the above-described embodiments, need not to support to measure under the situation of information reporting function at terminal equipment, still can realize wireless terminal comparatively easily in conversation or calling procedure, switching from the base station cell of a network to the base station cell of another network; Promptly support dual-card dual-standby terminal equipment (as mobile phone etc.) two internetwork switchings, thereby the handover operation process of being convenient between the multiple wireless standard network can reliably realize.
Specific embodiment two
In this implementation, specifically be by the objective network of RNC after the switching process that makes a call, to realize the handover operation between two networks.
The concrete processing procedure of this implementation may further comprise the steps as shown in Figure 5 and Figure 6:
Step 21:RNC or terminal equipment are initiated handoff request to TD-MSC;
After terminal equipment moves to the marginal zone of TD network's coverage area, detect the area of coverage that this terminal equipment will leave the TD network, and enter the GSM network coverage area, then initiate handoff request to TD-MSC by RNC or terminal equipment by RNC or terminal equipment;
Step 22:TD-MSC makes a call to GSM-MSC after receiving described handoff request, and called number is the number of terminal equipment in the GSM network;
Step 23:GSM network is initiated paging to described terminal equipment after receiving the calling of described TD-MSC initiation, and sets up calling for this terminal equipment, is carrying the handoff parameter identification information in the described calling, serves as to switch the calling that causes to show this calling;
In this step, after the calling between foundation and the terminal equipment, also send the message of allocated channel to terminal equipment, think that terminal equipment carries out channel assignment, is convenient to the handover operation of terminal equipment;
Step 24: after terminal equipment is received the calling of GSM network to its initiation, session is switched on the new passage;
In this step, terminal equipment need not ring after receiving the calling of GSM network to its initiation, only needs new calling of automatic-answering back device to get final product, and will converse accordingly or calling procedure switches on the newly-established speech channel, to return call answering message to TD-MSC;
After step 25:TD-MSC receives described call answering, on the speech channel that the conversation or the calling procedure of described terminal equipment switched to new call setup;
In this step, the message of the release channel that TD-MSC also sends to terminal equipment is to discharge the former wireless channel carrying that takies of this terminal equipment.
Equally, in this embodiment, terminal equipment in conversation or the calling procedure still can be realized by a kind of network to another kind of internetwork handover operation, thereby satisfy the demand that terminal equipment is communicated by letter well under the situation of the function that need not to possess reporting measurement message.
The embodiment of the invention also provides a kind of subscriber equipment, promptly described terminal equipment, and its specific implementation structure is shown in Fig. 7 a, can comprise that specifically first switching channel sets up unit, first and switch performance element, and comprise the Handover Number information memory cell alternatively, wherein
First switching channel is set up the unit, the terminal equipment of determining conversation or calling procedure is used for after need switch to second network's coverage area from first network's coverage area, receive the Handover Number information that first network is sent, and according to described Handover Number information in second network to first network-originated call, and the speech channel after set up switching;
First switches performance element, is used for current conversation or calling are switched to the speech channel that first switching channel is set up unit foundation;
The Handover Number information memory cell is used for preserving the Handover Number information that handoff procedure for the first time distributes, and all the Handover Number information of distributing in the handoff procedure the described first time is offered described switching channel at follow-up handoff procedure and set up the unit.
The embodiment of the invention also provides another kind of subscriber equipment, promptly described terminal equipment, and its specific implementation structure is shown in Fig. 7 b, can comprise that specifically the 3rd switching channel sets up unit, the 4th and switch performance element, and comprise the switch call recognition unit alternatively, wherein
The 3rd switching channel is set up the unit, is used to receive the calling that is used to switch that the first server network entity is sent by second network, and automatic-answering back device, to set up the speech channel between first network and second network;
The 4th switches performance element, is used for current conversation or calling are switched to the speech channel that the 3rd switching channel is set up unit foundation;
The switch call recognition unit is used for receipt of call, and identifies the calling that is used to switch according to the handoff parameter of carrying in calling out, and passes to the 3rd switching channel and set up the unit.
The realization system that the embodiment of the invention also provides a kind of network to switch, its specific implementation structure such as Fig. 8 and shown in Figure 9, need switch to second network from first network with the terminal equipment in conversation or the calling procedure is example, this system specifically can comprise the first handover operation unit that is arranged in first network, and be arranged at the second handover operation unit in second network, describe below in conjunction with the specific implementation structure of accompanying drawing the described first handover operation unit and the second handover operation unit.
(1) first handover operation unit
This unit is used for after the terminal equipment of determining conversation or calling procedure need switch to second network's coverage area from first network's coverage area, at first network and be between the terminal equipment in second network and set up speech channel by the mode that makes a call, and described terminal equipment is switched to second network's coverage area from the first network overlay area by described speech channel, be about on the conversation of described terminal equipment or the speech channel that calling switches to foundation;
Say that more specifically this first handover operation unit specifically can comprise:
(1) second switching channel is set up the unit, be used for after the terminal equipment of determining conversation or calling procedure need switch to second network's coverage area from first network's coverage area, by first network and be in calling procedure between the terminal equipment in second network and set up speech channel between two networks;
This second switching channel set up the unit specifically can but be not limited to adopt any realization in following two kinds of schemes:
As shown in Figure 8, in first kind of implementation, described second switching channel is set up the unit and specifically can be comprised with lower unit:
The handoff request processing unit, be used for the handoff request that the access network entity of the receiving terminal apparatus or first network is sent, and to terminal equipment transmission Handover Number information, described Handover Number is used for identifying the first network core network entity and corresponding terminal equipment;
First passage is set up determining unit, be used for the calling that receiving terminal apparatus adopts described Handover Number also to initiate by the core network entity of second network as called number, set up the speech channel between first network and second network, and notify described handover operation unit.
As shown in Figure 9, in second kind of implementation, described switching channel is set up the unit and specifically can be comprised with lower unit:
The unit is initiated in switch call, is used for the handoff request that the access network entity of the receiving terminal apparatus or first network is sent, and makes a call to terminal equipment by the core network entity in second network;
Second channel is set up determining unit, is used for after receiving the call answering message of returning by the second server network entity, determines that the speech channel between first network and second network is set up, and notifies described handover operation unit.
(2) second switch performance element, be used for setting up the speech channel of setting up the unit by described second switching channel described terminal equipment is switched to second network's coverage area from the first network overlay area.
(2) second handover operation unit
This unit be used for and the described first handover operation unit between mutual call information, set up the speech channel between first network and second network, afterwards, just ongoing conversation of described terminal equipment or calling can be switched on the described speech channel, to realize corresponding handover operation;
Specifically can adopt two kinds of schemes to realize because second switching channel in the first handover operation unit is set up the unit, this corresponding second handover operation unit also can but be not limited to adopt any realization in corresponding following two kinds of schemes:
As shown in Figure 8, in first kind of implementation, the described second handover operation unit specifically can comprise with lower unit:
First calls out the reception processing unit, be used for the calling that receiving terminal apparatus utilizes described Handover Number to initiate, and the first passage that routes the call in first network is set up determining unit;
The 3rd switches performance element, is used for determining the speech channel foundation between first network and second network, and the conversation or the calling of described terminal equipment being switched on this speech channel after receiving the call answering that first network returns.
As shown in Figure 9, in second kind of implementation, the described second handover operation unit specifically can comprise with lower unit:
Second calls out the reception processing unit, is used for receiving the calling of the switch call initiation unit of first network to the terminal equipment initiation, and described calling is sent to terminal equipment;
The 3rd switches performance element, be used for after receiving the call answering that terminal equipment returns, to the first network echo reply message, determine that the speech channel between first network and second network is set up, and the conversation or the calling of described terminal equipment switched on this speech channel.
Alternatively, the described second calling reception processing unit specifically can comprise:
Switch sign the unit is set, be used for initiating the unit handoff parameter sign is set in the calling that terminal equipment is initiated in the switch call of first network that receives, to show that this calling is the calling that handover operation causes, thereby after being convenient to terminal equipment and receiving the calling that carries this handoff parameter sign, can accurately identify this callings is the calling that is used for handover operation;
The message related to calls transfer unit is used for the calling that described switching sign is provided with after the cell processing is sent to terminal equipment.
In this system, the described first handover operation unit and the second handover operation unit specifically can be arranged in the communication network in the existing network equipment, also can be arranged in the network equipment of special setting, the described existing network equipment can be switch of MSC, MSCe or soft-exchange construction etc.
In this subscriber equipment and system embodiment, the specific implementation function of each unit is identical with realization function among the previously described method embodiment, so no longer be repeated in this description a bit again.
In sum, the realization of the embodiment of the invention makes terminal equipment to be moved under the another kind of network's coverage area from a kind of network's coverage area comparatively easily, and can keep ongoing conversation uninterrupted, thereby has improved the communication performance of network.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (13)
1. the implementation method that network switches is characterized in that, comprising:
If the terminal equipment in conversation or the calling procedure need switch to second network's coverage area from first network's coverage area, the core network entity in first network and being between the terminal equipment in second network coverage area then, directly make a call, to set up speech channel to the opposite end;
On the speech channel that the conversation or the calling of terminal equipment switched to foundation;
Describedly directly make a call to the opposite end, comprise with the step of setting up speech channel: after the access network entity in the terminal equipment or first network determined that described terminal equipment need be carried out handover operation, then the core network entity in first network sent handoff request; After core network entity in first network receives handoff request, send Handover Number information to terminal equipment, described Handover Number information is used for identifying the first network core network entity and corresponding terminal equipment; After terminal equipment obtains described Handover Number information, in second network, make a call, set up the speech channel between first network and second network according to the core network entity of described Handover Number information in first network; Perhaps,
Describedly directly make a call to the opposite end, comprise with the step of setting up speech channel: after the access network entity in the terminal equipment or first network determined that described terminal equipment need be carried out handover operation, then the core network entity in first network sent handoff request; After core network entity in first network receives handoff request, make a call to terminal equipment, set up the speech channel between first network and second network by the core network entity in second network.
2. method according to claim 1 is characterized in that, the described terminal equipment process that the core network entity in first network makes a call in second network also comprises:
Core network entity in second network carries out legitimate verification according to described Handover Number information to this calling after receiving the calling of terminal equipment initiation.
3. method according to claim 1, it is characterized in that, the secret number information that also comprises terminal equipment in the described Handover Number information, and the core network entity in described first network carries out legitimate verification according to described secret number information to this calling receive the calling that terminal equipment initiates in second network after.
4. method according to claim 1 is characterized in that, if described terminal equipment need carry out repeatedly handover operation, then follow-up handoff procedure all carries out follow-up handover operation according to the Handover Number information of distributing in the handoff procedure first time.
5. method according to claim 1, it is characterized in that, described terminal equipment is received the calling that the core network entity in first network is initiated, and determines this calling for after the calling that is used to switch according to the handoff parameter sign in calling out, No ringing and automatic-answering back device.
6. according to each described method of claim 1 to 5, it is characterized in that described terminal equipment comprises the dual-card dual-standby terminal equipment of supporting single numbers, the mode of described support single numbers comprises:
Be not in the network of described single numbers correspondence if the terminal equipment of receipt of call is current, then by single numbers Call Forwarding on mobile subscriber Not Reachable function being set with the number of Call Forwarding in the current network, for the signaling of returning, then need the number in the current network wherein is revised as described single numbers;
Be not in the network of described single numbers correspondence if the terminal equipment that makes a call is current, then calling number be revised as corresponding described single numbers.
7. one kind is used for the terminal equipment that network switches, and it is characterized in that, comprising:
First switching channel is set up the unit, after the access network entity of the described terminal equipment or first network determines that described terminal equipment need switch to second network's coverage area from first network's coverage area, core network entity in first network sends handoff request, core network entity in first network sends Handover Number information to described terminal equipment after receiving handoff request, described first switching channel is set up the unit and is used to receive the Handover Number information that the first server network entity is sent, and in second network, make a call to the first server network entity according to described Handover Number information, and the speech channel after the foundation switching, described Handover Number information is used for identifying the first network core network entity and corresponding terminal equipment;
First switches performance element, is used for current conversation or calling are switched to the speech channel that first switching channel is set up unit foundation.
8. terminal equipment according to claim 7, it is characterized in that, also comprise the Handover Number information memory cell, be used for preserving the Handover Number information that handoff procedure for the first time distributes, and all the Handover Number information of distributing in the handoff procedure the described first time offered described first switching channel at follow-up handoff procedure and set up the unit.
9. one kind is used for the terminal equipment that network switches, and it is characterized in that, comprising:
The 3rd switching channel is set up the unit, after access network entity in the described terminal equipment or first network determines that described terminal equipment need be carried out handover operation, core network entity in first network sends handoff request, after core network entity in first network receives handoff request, make a call to described terminal equipment by the core network entity in second network, described the 3rd switching channel is set up the unit and is used to receive the calling that is used to switch that the first server network entity is sent by the second server network entity, and automatic-answering back device, to set up the speech channel between first network and second network;
The 4th switches performance element, is used for current conversation or calling are switched to the speech channel that the 3rd switching channel is set up unit foundation.
10. terminal equipment according to claim 9, it is characterized in that described terminal equipment also comprises the switch call recognition unit, is used for receipt of call, and identify the calling that is used to switch, and pass to the 3rd switching channel and set up the unit according to the handoff parameter of carrying in calling out.
11. a core network device is used for calling out control, it is characterized in that, comprises
Second switching channel is set up the unit, the terminal equipment of determining conversation or calling procedure is used for after need switch to second network's coverage area from first network's coverage area, handle the first server network entity and be in the calling of directly initiating between the terminal equipment in second network coverage area, set up the speech channel between two networks to the opposite end;
Second switches performance element, is used for the conversation or the calling of described terminal equipment are switched to the speech channel that described second switching channel is set up unit foundation;
Described second switching channel is set up the unit and is specifically comprised:
The handoff request processing unit, be used for the handoff request that the access network entity of the receiving terminal apparatus or first network is sent, and to terminal equipment transmission Handover Number information, described Handover Number information is used for identifying the core network entity and the corresponding terminal equipment of first network;
First passage is set up determining unit, be used for the calling that receiving terminal apparatus adopts described Handover Number information also to initiate by the core network entity of second network as called number, set up the speech channel between first network and second network, and notify described second to switch performance element;
Perhaps,
Described second switching channel is set up the unit and is specifically comprised:
The unit is initiated in switch call, is used for the handoff request that the access network entity of the receiving terminal apparatus or first network is sent, and makes a call to terminal equipment by the core network entity in second network;
Second channel is set up determining unit, is used for after receiving the call answering message of returning by the second server network entity, determines that the speech channel between first network and second network is set up, and notifies described second to switch performance element.
12. the realization system that network switches is characterized in that, comprising:
The first handover operation unit, be arranged in first network, the terminal equipment of determining conversation or calling procedure is used for after need switch to second network's coverage area from first network's coverage area, handle the first server network entity and be in the calling of directly initiating between the terminal equipment in second network coverage area to the opposite end, set up speech channel, and described terminal equipment is switched to second network's coverage area from first network's coverage area by described speech channel;
The second handover operation unit, be arranged in second network, be used for and the described first handover operation unit between mutual call information, set up the speech channel between first network and second network, and the conversation or the calling of described terminal equipment switched on the described speech channel;
The described first handover operation unit specifically comprises:
The handoff request processing unit, be used for the handoff request that the access network entity of the receiving terminal apparatus or first network is sent, and to terminal equipment transmission Handover Number information, described Handover Number information is used for identifying the first network core network entity and corresponding terminal equipment;
First passage is set up determining unit, is used for the calling that receiving terminal apparatus is initiated by the core network entity of second network, sets up the speech channel between first network and second network;
Second switches performance element, is used for setting up the speech channel that determining unit sets up by described first passage described terminal equipment is switched to second network's coverage area from first network's coverage area;
The described second handover operation unit specifically comprises:
First calls out the reception processing unit, be used for the calling that receiving terminal apparatus utilizes described Handover Number information to initiate, and the first passage that routes the call in first network is set up determining unit;
The 3rd switches performance element, is used for determining the speech channel foundation between first network and second network, and the conversation or the calling of described terminal equipment being switched on this speech channel after receiving the call answering that first network returns;
Perhaps,
The described first handover operation unit specifically comprises:
The unit is initiated in switch call, is used for the handoff request that the access network entity of the receiving terminal apparatus or first network is sent, and makes a call to terminal equipment by the core network entity in second network;
Second channel is set up determining unit, is used for after the call answering message that reception is returned, and determines that the speech channel between first network and second network is set up, and notifies second to switch performance element;
Second switches performance element, is used for setting up the speech channel that determining unit sets up by described second channel described terminal equipment is switched to second network's coverage area from first network's coverage area;
The described second handover operation unit specifically comprises:
Second calls out the reception processing unit, is used for receiving the calling of the switch call initiation unit of first network to the terminal equipment initiation, and described calling is sent to terminal equipment;
The 3rd switches performance element, be used for after receiving the call answering that terminal equipment returns, to the first network echo reply message, determine that the speech channel between first network and second network is set up, and the conversation or the calling of described terminal equipment switched on this speech channel.
13. system according to claim 12 is characterized in that, described second calls out the reception processing unit specifically comprises:
Switching sign the unit is set, be used for initiating the unit in the switch call of first network that receives the handoff parameter sign is set in the calling that terminal equipment is initiated, is the calling that handover operation causes to show this calling;
The message related to calls transfer unit is used for the calling that described switching sign is provided with after the cell processing is sent to terminal equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100647505A CN101031146B (en) | 2007-03-23 | 2007-03-23 | Method, apparatus and system for switching network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100647505A CN101031146B (en) | 2007-03-23 | 2007-03-23 | Method, apparatus and system for switching network |
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| Publication Number | Publication Date |
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| CN101031146A CN101031146A (en) | 2007-09-05 |
| CN101031146B true CN101031146B (en) | 2010-10-27 |
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| CN2007100647505A Expired - Fee Related CN101031146B (en) | 2007-03-23 | 2007-03-23 | Method, apparatus and system for switching network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103781129A (en) * | 2012-10-18 | 2014-05-07 | 华为技术有限公司 | Voice call switching method and voice call switching apparatus |
| CN108696881B (en) * | 2017-03-16 | 2021-06-29 | 中国移动通信有限公司研究院 | Connection management method, first network equipment, terminal equipment and system |
| CN109195198B (en) * | 2018-10-08 | 2021-03-12 | Oppo广东移动通信有限公司 | Network selection method and device for dual-card dual-standby terminal, terminal equipment and storage medium |
| CN111818593A (en) * | 2019-07-31 | 2020-10-23 | 维沃移动通信有限公司 | Network switching method and terminal |
| CN111818592A (en) * | 2019-07-31 | 2020-10-23 | 维沃移动通信有限公司 | Network switching method, network equipment and terminal |
| CN113225440B (en) * | 2021-04-22 | 2022-09-02 | 广西东信易通科技有限公司 | Management method of cloud communication network slices, computer equipment and storage medium |
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| CN1146270A (en) * | 1994-04-15 | 1997-03-26 | 诺基亚电信公司 | Handover method and arrangement |
| US5828661A (en) * | 1996-05-22 | 1998-10-27 | Qualcomm Incorporated | Method and apparatus for providing a cone of silence in a cellular communication system |
| CN1225786A (en) * | 1996-05-23 | 1999-08-11 | 夸尔柯姆股份有限公司 | Method and apparatus for hard handoff in a CDMA system |
| CN1802002A (en) * | 2004-12-31 | 2006-07-12 | 华为技术有限公司 | Multi-cell fast switching method |
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- 2007-03-23 CN CN2007100647505A patent/CN101031146B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1146270A (en) * | 1994-04-15 | 1997-03-26 | 诺基亚电信公司 | Handover method and arrangement |
| US5828661A (en) * | 1996-05-22 | 1998-10-27 | Qualcomm Incorporated | Method and apparatus for providing a cone of silence in a cellular communication system |
| CN1225786A (en) * | 1996-05-23 | 1999-08-11 | 夸尔柯姆股份有限公司 | Method and apparatus for hard handoff in a CDMA system |
| CN1802002A (en) * | 2004-12-31 | 2006-07-12 | 华为技术有限公司 | Multi-cell fast switching method |
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