CN106717057A - Method for establishing voice bearer and access network device - Google Patents
Method for establishing voice bearer and access network device Download PDFInfo
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- CN106717057A CN106717057A CN201580033025.4A CN201580033025A CN106717057A CN 106717057 A CN106717057 A CN 106717057A CN 201580033025 A CN201580033025 A CN 201580033025A CN 106717057 A CN106717057 A CN 106717057A
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- 238000004891 communication Methods 0.000 description 17
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- 238000010586 diagram Methods 0.000 description 12
- 230000002085 persistent effect Effects 0.000 description 12
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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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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Abstract
Disclosed are a method for establishing a voice bearer and an access network device, used to establish a voice bearer for a terminal. The terminal camps on a cell provided by a first access network device, and the first access network device is not suitable for establishing a voice bearer. According to the method, the first access network device receives a bearer establishment request message sent by a core network device, wherein the bearer establishment request message is used for requesting the first access network device to establish a voice bearer; the first access network device sends a bearer establishment response message to the core network device, wherein the bearing establishment response message is used for notifying the core network device that the voice bearer is successfully established; the first access network device hands over the terminal to a target cell and triggers, during the handover, the establishment of a voice bearer in the target cell. The present invention can reduce the voice call delay for a terminal during cell handover.
Description
The present invention relates to the method for building up and access network equipment of communication technical field, more particularly to a kind of voice bearer.
With continuing to develop for the communication technology, data transfer is more and more faster.Most basic and very important audio call is also from initial pure Phonetic Speech Development to voice and video telephone.The existing audio call connection stand-by period is shorter, and can provide the user higher quality, more natural voice and video telephone, facilitates the communication between user.
Fig. 1 is refer to, it is the schematic diagram that a kind of existing voice bearer sets up process.As shown in figure 1, terminal sends service request (service request) to initiate speech business (S101) to equipment of the core network；Equipment of the core network is based on the service request, and sending carrying to the first access network equipment sets up request (S102), and voice bearer is set up to ask the first access network equipment as it.When the first access network equipment because when the reason such as covering or legal restriction can not set up voice bearer for the terminal, it sends response message (S103) to equipment of the core network, to inform that failure is set up in equipment of the core network carrying.Then, the first access network equipment switches the terminal into neighbor cell (S104), and notifies equipment of the core network (S105).So, equipment of the core network sends carrying to the second access network equipment where neighbor cell and sets up request (S106), and voice bearer (S107) is set up as the second access network equipment where the neighbor cell, and response message (S108) is sent to equipment of the core network, to inform that equipment of the core network carrying is successfully established.It can be seen that, when the cell that terminal is resident can not set up voice bearer, larger audio call time delay will be produced, Consumer's Experience is not good.
The content of the invention
Technical problem to be solved of the embodiment of the present invention is that there is provided a kind of method for building up of voice bearer and access network equipment.When can not set up voice bearer to solve the current persistent district of terminal, the problem of audio call time delay is larger.
First aspect, the embodiments of the invention provide a kind of method for building up of voice bearer, the foundation carried for terminal speech, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, methods described includes：
Request message is set up in the carrying that first access network equipment receives equipment of the core network transmission, wherein, institute
State carrying and set up request message for asking first access network equipment to set up voice bearer；
First access network equipment sends carrying to the equipment of the core network and sets up response message, and response message is set up in the carrying to be used to notify the equipment of the core network voice bearer to be successfully established；
The terminal is switched to Target cell, and foundation of the triggering voice bearer in the Target cell in handoff procedure by first access network equipment.
With reference in a first aspect, in first aspect in the first possible implementation, the terminal is switched to before Target cell by first access network equipment, in addition to：
First access network equipment obtains the status information of the neighbor cell for the cell that the terminal is resident；
According to acquired status information, the Target cell is selected from neighbor cell.
The first possible implementation with reference to first aspect, in second of possible implementation of first aspect, the status information includes speech business disposal ability.
With reference to second of possible implementation of first aspect, in first aspect in the third possible implementation, the status information also includes one of signal quality and load or whole.
With reference to first aspect or first aspect the first to the third any possible implementation, in the 4th kind of possible implementation of first aspect, the resident cell of the terminal is TDD cell, and the Target cell is FDD cell.
With reference to first aspect or first aspect the first to the 4th kind of any possible implementation, in the 5th kind of possible implementation of first aspect, when the Target cell belongs to the second access network equipment, first access network equipment triggers foundation of the voice bearer in the Target cell in handoff procedure, including：
First access network equipment sends voice bearer to second access network equipment and sets up configured information, and the voice bearer, which sets up configured information, to be used to indicate that second access network equipment sets up voice bearer.
With reference to the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation of first aspect, the voice bearer is set up configured information and carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message.
With reference to first aspect or first aspect the first to the 4th kind of any possible implementation, in the 7th kind of possible implementation of first aspect, when the Target cell belongs to first access network equipment, first access network equipment triggers foundation of the voice bearer in the Target cell in handoff procedure, in addition to：
It is that the terminal sets up voice bearer in the Target cell；
The voice bearer for carrying and being set up for the terminal in switching command message, the switching command message is sent to the terminal.
Second aspect, the embodiments of the invention provide a kind of method for building up of voice bearer, the foundation carried for terminal speech, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, methods described includes：
The voice bearer that second access network equipment receives the first access network equipment transmission sets up configured information, and the voice bearer sets up configured information and sets up what is sent after request to second access network equipment in the voice bearer for receiving equipment of the core network transmission from first access network equipment；
Second access network equipment sets up configured information according to the voice bearer, is that the terminal sets up voice bearer；
Second access network equipment sends voice bearer to first access network equipment and sets up response, to notify the first access network equipment voice bearer is set up to complete.
With reference to second aspect, in second aspect in the first possible implementation, the voice bearer is set up configured information and is carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message；It is switching request acknowledgement message that the voice bearer, which sets up response,.
The third aspect, the embodiments of the invention provide a kind of access network equipment, the foundation carried for terminal speech, the terminal resides in the cell that the access network equipment is provided, and the access network equipment is unsuitable for setting up voice bearer, and the access network equipment includes：
Request message is set up in receiving unit, the carrying for receiving equipment of the core network transmission, wherein, request message is set up in the carrying to be used to ask the access network equipment to set up voice bearer；
Transmitting element, sets up response message, response message is set up in the carrying to be used to notify the equipment of the core network voice bearer to be successfully established for sending carrying to the equipment of the core network；
Switch unit, for the terminal to be switched into Target cell, and foundation of the triggering voice bearer in the Target cell in handoff procedure.
With reference to the third aspect, in the third aspect in the first possible implementation, the access network equipment also includes：
Acquiring unit, the status information of the neighbor cell for obtaining the cell that the terminal is resident；
Selecting unit, for the status information according to acquired in the acquiring unit, is selected from neighbor cell
The Target cell.
The first possible implementation with reference to the third aspect, in second of possible implementation of the third aspect, the status information includes speech business disposal ability.
With reference to second of possible implementation of the third aspect, in the third aspect in the third possible implementation, the status information also includes one of signal quality and load or whole.
With reference to the third aspect or the third aspect the first to the third any possible implementation, in the 4th kind of possible implementation of the third aspect, the resident cell of the terminal is TDD cell, and the Target cell is FDD cell.
With reference to the third aspect or the third aspect the first to the 4th kind of any possible implementation, in the 5th kind of possible implementation of the third aspect, when the Target cell belongs to the second access network equipment, the switch unit specifically for：
Voice bearer is sent to second access network equipment and sets up configured information, and the voice bearer, which sets up configured information, to be used to indicate that second access network equipment sets up voice bearer.
With reference to the 5th kind of possible implementation of the third aspect, in the 6th kind of possible implementation of the third aspect, the voice bearer is set up configured information and carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message.
With reference to the third aspect or the third aspect the first to the 4th kind of any possible implementation, in the 7th kind of possible implementation of the third aspect, when the Target cell belongs to the access network equipment, the switch unit specifically for：
It is that the terminal sets up voice bearer in the Target cell；The voice bearer for carrying and being set up for the terminal in switching command message, the switching command message is sent to the terminal.
Fourth aspect, the embodiments of the invention provide a kind of access network equipment, the foundation carried for terminal speech, the terminal resides in the cell that the access network equipment is provided, and the access network equipment is unsuitable for setting up voice bearer, and the access network equipment includes：
Processor, first interface circuit, second interface circuit, memory, bus and transceiver, the processor, first interface circuit, second interface circuit, transceiver and memory are connected by the bus and complete mutual communication, wherein, batch processing code is stored in the memory, the processor is used to call the program code stored in the memory, performs following operate：
Request message is set up in the carrying for receiving equipment of the core network transmission by first interface circuit, wherein, it is described
Request message is set up in carrying to be used to ask the access network equipment to set up voice bearer；
Carrying is sent to the equipment of the core network by first interface circuit and sets up response message, response message is set up in the carrying to be used to notify the equipment of the core network voice bearer to be successfully established；
The terminal is switched to Target cell, and foundation of the triggering voice bearer in the Target cell in handoff procedure.
With reference to fourth aspect, in fourth aspect in the first possible implementation, the processor is additionally operable to：
The status information of the neighbor cell for the cell that the terminal is resident is obtained by transceiver or second interface circuit；
According to acquired status information, the Target cell is selected from neighbor cell.
The first possible implementation with reference to fourth aspect, in second of possible implementation of fourth aspect, the status information includes speech business disposal ability.
With reference to second of possible implementation of fourth aspect, in fourth aspect in the third possible implementation, the status information also includes one of signal quality and load or whole.
With reference to fourth aspect or fourth aspect the first to the third any possible implementation, in the 4th kind of possible implementation of fourth aspect, the resident cell of the terminal is TDD cell, and the Target cell is FDD cell.
With reference to fourth aspect or fourth aspect the first to the 4th kind of any possible implementation, in the 5th kind of possible implementation of fourth aspect, when the Target cell belongs to the second access network equipment, the processor specifically for：
Voice bearer is sent to second access network equipment by second interface circuit and sets up configured information, the voice bearer, which sets up configured information, to be used to indicate that second access network equipment sets up voice bearer.
With reference to the 5th kind of possible implementation of fourth aspect, in the 6th kind of possible implementation of fourth aspect, the voice bearer is set up configured information and carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message.
With reference to fourth aspect or fourth aspect the first to the 4th kind of any possible implementation, in the 7th kind of possible implementation of fourth aspect, when the Target cell belongs to first access network equipment, the processor specifically for：
It is that the terminal sets up voice bearer in the Target cell；Sent by transceiver to the terminal and the voice bearer set up for the terminal is carried in switching command message, the switching command message.
5th aspect, the embodiments of the invention provide a kind of access network equipment, the foundation carried for terminal speech, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, the access network equipment includes：
Receiving unit, configured information is set up for receiving the voice bearer that first access network equipment is sent, the voice bearer sets up configured information and sets up what is sent after request to the access network equipment in the voice bearer for receiving equipment of the core network transmission from first access network equipment；
Unit is set up, is that the terminal sets up voice bearer for setting up configured information according to the voice bearer；
Transmitting element, response is set up for sending voice bearer to first access network equipment, to notify the first access network equipment voice bearer is set up to complete.
With reference to the implementation of the 5th aspect, in the first possible implementation in terms of the 5th, the voice bearer is set up configured information and is carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message；It is switching request acknowledgement message that the voice bearer, which sets up response,.
6th aspect, the embodiments of the invention provide a kind of access network equipment, the foundation carried for terminal speech, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, the access network equipment includes：
Processor, interface circuit, memory and bus, the processor, interface circuit and memory are connected by the bus and complete mutual communication, wherein, batch processing code is stored in the memory, the processor is used to call the program code stored in the memory, performs following operate：
The voice bearer for receiving the first access network equipment transmission by interface circuit sets up configured information, and the voice bearer sets up configured information and sets up what is sent after request to the access network equipment in the voice bearer for receiving equipment of the core network transmission from first access network equipment；
Configured information is set up according to the voice bearer, is that the terminal sets up voice bearer；
Voice bearer is sent to first access network equipment by interface circuit and sets up response, to notify the first access network equipment voice bearer is set up to complete.
With reference to the implementation of the 6th aspect, in the first possible implementation in terms of the 6th, the voice bearer is set up configured information and is carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message；It is switching request acknowledgement message that the voice bearer, which sets up response,.
By such scheme, the first access network equipment sets up request in the carrying for receiving equipment of the core network transmission
During message, carrying, which is sent, to equipment of the core network sets up response message, equipment of the core network voice bearer is notified to set up layer, then when switching the terminal into Target cell, foundation of the voice bearer in the Target cell is triggered in handoff procedure, so, when the first access network equipment is unsuitable for setting up voice bearer, although it does not set up voice bearer, but still have sent the response message that carrying is successfully established to equipment of the core network, so that equipment of the core network would not think that failure is set up in carrying, and wait the cell newly cut to terminal again after handover success to send carrying and set up request message, guarantee has been carried out for the continuation communication in later handover processes after Target cell gets out voice resource, so that the resource prepared in advance can be used directly after cell switching is carried out and set up voice bearer for terminal, complete the processing to voice call service, reduce the time delay of audio call, reduce the time of user's wait.
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram that a kind of existing voice bearer sets up process；
Fig. 2 is a kind of schematic flow sheet of the method for building up of voice bearer provided in an embodiment of the present invention；
Fig. 3 is the schematic flow sheet of the method for building up of another voice bearer provided in an embodiment of the present invention；
Fig. 4 is the schematic flow sheet of voice bearer method for building up in a kind of X2 handoff procedures provided in an embodiment of the present invention；
Fig. 5 is the schematic flow sheet of voice bearer method for building up in a kind of S1 handoff procedures provided in an embodiment of the present invention；
Fig. 6 is the schematic flow sheet of voice bearer method for building up during switching in a kind of station provided in an embodiment of the present invention；
Fig. 7 is a kind of composition schematic diagram of access network equipment provided in an embodiment of the present invention；
Fig. 8 is the composition schematic diagram of another access network equipment provided in an embodiment of the present invention；
Fig. 9 is the composition schematic diagram of another access network equipment provided in an embodiment of the present invention；
Figure 10 is the composition schematic diagram of another access network equipment provided in an embodiment of the present invention；
Figure 11 is the composition schematic diagram of another access network equipment provided in an embodiment of the present invention.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
In this application, take into account terminal persistent district can not set up the problem of access delay brought during voice bearer is larger, when access network equipment can not set up voice bearer, although without the foundation of voice bearer, but still notify equipment of the core network carrying to be successfully established, and set up in handoff procedure voice bearer；So that target access network equipment prepares voice resource in advance, access delay is reduced, Consumer's Experience is improved.
First, the part term in the application is explained, in order to skilled artisan understands that.
1), access network is used to terminal being linked into wireless network, and access network equipment includes but is not limited to：Evolved node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (Base Station Controller, BSC), base transceiver station (Base Transceiver Station, BTS), Home eNodeB is (for example, Home evolved NodeB, or Home Node B, HNB), Base Band Unit (BaseBand Unit, BBU), Wifi access points (Access Point, AP) etc..
2), core net is used to provide management and the connection of external network for terminal.Equipment of the core network includes but is not limited to mobility management entity (Mobility Management Entity, MME), General Packet Radio System (General Packet Radio System, GPRS) business support node (serving GPRS support node, SGSN), mobile switching centre (Mobile Switching Center, MSC) etc..
3), terminal, also referred to as user equipment (User Equipment, UE), is a kind of equipment for providing a user voice and/or data connectivity, for example, the portable equipment with wireless connecting function, other processing equipments etc. for being connected to wireless modulation-demodulation decoder.
Above loading establishing process is illustrated below in conjunction with the accompanying drawings.
Fig. 2 is refer to, it is a kind of schematic flow sheet of the method for building up of voice bearer provided in an embodiment of the present invention.This method is used for the foundation that terminal speech is carried, and terminal resides in the cell (hereinafter referred to as persistent district) that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer.As shown in Fig. 2 this method comprises the following steps：
S201：First access network equipment receive equipment of the core network send carrying set up request message, wherein, the carrying set up request message be used for ask the first access network equipment set up voice bearer；
S202：First access network equipment sends carrying to equipment of the core network and sets up response message, and response message is set up in the carrying to be used to notify equipment of the core network voice bearer to be successfully established；
S203：First access network equipment switches the terminal into Target cell, and foundation of the triggering voice bearer in Target cell in handoff procedure.
It can be seen that, in above method, although first access network equipment is unsuitable for setting up voice bearer, but it still returns to the message that voice bearer is successfully established to equipment of the core network, and foundation of the voice bearer in neighbor cell is triggered in later handover processes, shift to an earlier date all set voice resource so in handoff procedure, it is not necessary to carry out the foundation of voice bearer again after the completion of switching, audio access time delay is reduced, Consumer's Experience is improved.
It should be noted that in this application：First access network equipment is unsuitable for setting up voice bearer including that can not set up one of voice bearer and the poor unsuitable scene for carrying out voice communication of voice service service quality or whole.QoS of voice is poor can be by setting speech service quality thresholding to judge, the application does not do any limitation.
In above step S201, the carrying is set up in request message and can carry voice bearer and set up configured information, the voice bearer set up configured information be used for indicate need to set up be carried as voice bearer.For example, above-mentioned voice bearer sets up configured information service quality rating can be used to identify (Quality of Service Class Identifier, abbreviation QCI).QCI is used for the characteristic for describing data transfer between terminal and strategy and charging execution function entity (Policy and Charging Enforcement Function, abbreviation PCEF), main to include 4 information：Resource type (Resource Type), resource prioritization (Priority), data delay (Packet Delay Budget), data packetloss rate (Packet Error Loss Rate).QCI is a scale value, and every kind of business needs different grades of QCI to ensure transmission quality.In QCI on Data Radio Bearer (Data Radio Bearer, DRB), QCI1, QCI2 are the related QCI of voice to QCI5.Wherein, QCI1 carry voice traffics, QCI2 carrying video traffics, the session initiation protocol (English of QCI5 carry voice traffics：Session Initiation Protocol, abbreviation：SIP) signaling, for example, setting up and discharging the SIP signalings used in speech business.When setting up speech business, by sending SIP signalings to equipment of the core network in QCI5, triggering core net sets up QCI1 carryings to complete, or, need to set up QCI1 and QCI2 carryings for videophone to complete.When terminating speech business, corresponding SIP signalings are transmitted on QCI5, are completed with triggering equipment of the core network release QCI1, or, for videophone industry
Business is, it is necessary to discharge QCI1 and QCI2 to complete, it is believed that end of conversation.Therefore, for speech business, QCI1, which can serve to indicate that, needs that sets up to be carried as voice bearer, you can to set up configured information by the use of QCI1 as voice bearer.For visual telephone service, it is possible to use QCI1 and QCI2 set up configured information as voice bearer.In addition it is also possible to define an information be used for indicate need foundation be carried as voice bearer, the application does not do any limitation to this.
In above step S202, because the first access network equipment is unsuitable for setting up voice bearer, therefore it does not set up voice bearer, but it still have sent the response message that carrying is successfully established to equipment of the core network.So equipment of the core network would not think that failure is set up in carrying, and wait the cell newly cut to terminal again after handover success to send carrying and set up request message.Guarantee is carried out for the continuation communication in later handover processes after Target cell gets out voice resource.
Before above step S203, the first access network equipment can select the Target cell of switching.Fig. 3 is refer to, it is the schematic flow sheet of the method for building up of another voice bearer provided in an embodiment of the present invention.Wherein, step S301-S302 is identical with step S201-S202, and here is omitted, and before the step S305 identical with step S203, this method also includes：
S303：First access network equipment obtains the status information of the neighbor cell of persistent district；
S304：According to acquired status information, the selection target cell from neighbor cell.
Above status information can include language service disposal ability, and the first access network equipment is according to the status information, and cell of the selection with speech business disposal ability is used as Target cell from the neighbor cell of persistent district.When neighbor cell only one of which, if the status information of neighbor cell shows that the neighbor cell is adapted to set up voice bearer, the neighbor cell is regard as Target cell.When neighbor cell has it is multiple when, if only one of which neighbor cell is adapted to set up voice bearer, the neighbor cell that this is adapted to set up voice bearer is used as Target cell；If more than one neighbor cell is adapted to set up voice bearer, therefrom optional one selects a best cell to be used as Target cell as Target cell, or according to other status informations.
For example, time division duplex (Time Division Duplex, TDD) cell is unsuitable for setting up voice bearer, and FDD (Frequency Division Duplex, FDD) cell is adapted to set up voice bearer, therefore, when persistent district is TDD cell, just it can select a FDD cell as Target cell from its neighbor cell, terminal is handed over, and foundation of the triggering voice bearer in Target cell in handoff procedure.
The foundation of selection target cell can include the signal quality of neighbor cell from the neighbor cell for being adapted to set up voice bearer above, can also include the load of neighbor cell.For example, selection signal is top-quality
Neighbor cell Target cell the most, or the minimum neighbor cell of selection load are used as Target cell.Herein, it is only for example and is not intended to limit the application.
Signal quality can be measured and reported by terminal and obtained, and the load of neighbor cell can be obtained by the interaction between base station.Certainly, if neighbor cell and persistent district belong to same access network equipment, interaction can both be obtained between not needing base station.
In above step S203, if persistent district and Target cell belong to different access network equipments, above handoff procedure refers to switch between station, including S1 switchings and X2 switchings.For example, in Long Term Evolution (Long Term Evolution, LTE) system, if being set up between access network equipment (eNB) has X2 mouthfuls, X2 switchings can be carried out, if without X2 mouthfuls, carrying out S1 switchings.For the network formats being directly connected to are not present between access network equipment, switching is usually S1 switchings between standing.In addition, the switching between different system, i.e., the switching that source access network equipment and target access network equipment belong under different network formats, switching is usually S1 switchings between standing.If persistent district and Target cell belong to identical access network equipment, above handoff procedure refers to interior switching of standing.Below with Long Term Evolution (Long Term Evolution, LTE) exemplified by, the foundation that carries in the foundation that is carried in the S1 handoff procedures between station and X2 handoff procedures is described respectively with reference to Fig. 4 and Fig. 5；And Fig. 6 is combined the foundation that is carried during the interior switching that describes to stand.
Fig. 4 is refer to, it is the schematic flow sheet of voice bearer method for building up in a kind of X2 handoff procedures provided in an embodiment of the present invention.In the present embodiment, using the first access network equipment as eNB1, the second access network equipment is eNB2, and equipment of the core network is illustrated for mobile management entity MME.The neighbor cell that wherein eNB1 chooses is located at eNB2, and terminal is switched into eNB2 from eNB1 by X2 switchings.
It the described method comprises the following steps：
S401：Terminal sends service request to MME, initiates audio call.
S402：MME sends carrying to eNB1 and sets up request message, and request message is set up in the carrying to be used to ask eNB1 to set up voice bearer.
S403：ENB1 returns to carrying and sets up response message, notifies MME voice bearers to be successfully established.
S404：ENB1 chooses the neighbor cell of current persistent district, initiates X2 switching flows, and wherein neighbor cell is located at eNB2.
S405：ENB1 sends handover request message to eNB2, carries voice bearer and sets up configured information, the voice bearer, which sets up configured information, to be used to indicate that eNB2 sets up voice bearer.
So eNB2 just can prepare the resource of voice bearer in advance according to the handover request message.
It should be noted that the resource for preparing to refer to carry out voice bearer before terminal switching cell in advance herein prepares.
Below continuing on the process of switching, but procedure below is only a kind of citing of existing handoff procedure, is not intended to limit the application.
S406：ENB2 carries out resource access, is the access distribution interface-free resources of terminal and the bearing resource of voice.
S407：After the success of eNB2 resources access, Handover Request Acknowledge (handover request acknowledge) message is sent to eNB1, indicates that switching preparation is completed.
S408：ENB1 instruction terminals are switched over, for example, can send RRC connection reconfiguration message instruction terminals to terminal performs switching.
S409：After terminal is successfully accessed Target cell, terminal informs that eNB2 handoff procedures are completed, for example, terminal sends RRC connections to the second base station reconfigures completion message, confirms that handoff procedure is completed to the second base station.
S410：ENB2 sends request message to MME, and request updates the node address of business datum passage.
S411：MME is updated the data after passage node address, and confirmation message is sent to eNB2, and expression can carry out service communication in new carrying.
S412：Terminal has accessed Target cell, and can carry out service communication in Target cell, now, and eNB2 indicates the resource and context of eNB1 release terminals；
S413：The context and resource of eNB1 release terminals.
After eNB2 is that X2 switchings get out the resource of voice bearer in advance, cell switching just can be carried out according to the switching flow of TS36.300 protocol definitions, it is quick to set up voice bearer using the resource being ready for and handle voice call service, reduce the time delay of audio call.
Fig. 5 is refer to, it is the schematic flow sheet of voice bearer method for building up in a kind of S1 handoff procedures provided in an embodiment of the present invention.In the present embodiment, using the first access network equipment as eNB1, the second access network equipment is eNB2, and equipment of the core network is illustrated for MME.The neighbor cell that wherein eNB1 chooses is located at eNB2, and terminal is switched into eNB2 from eNB1 by S1 switchings.
It the described method comprises the following steps：
Step S501-S503 is identical with step S401-S403, can refer to S401-S403, and here is omitted.
S504：ENB1 chooses the neighbor cell of current persistent district, initiates S1 switching flows.
S505：ENB1 sends handover request message to MME, carries voice bearer and sets up instruction message, the voice bearer, which sets up configured information, to be used to indicate that eNB2 sets up voice bearer.
So, mobile management entity just can notify eNB2 to prepare the resource of voice bearer in advance.
S506：MME sends handover request message to eNB2.
Below continuing on the process of switching, but procedure below is only a kind of citing of existing handoff procedure, is not intended to limit the application.
S507：ENB2 carries out resource access, is the access distribution interface-free resources of terminal and the bearing resource of voice.
S508：After the success of eNB2 resources access, switching request acknowledgement message is sent to MME, indicates that switching preparation is completed.
S509：MME sends switching and indicated to eNB1, informs the information such as its eNB2 address.
S510：ENB1 instruction terminals are switched over, for example, can send RRC connection reconfiguration message instruction terminals to terminal performs switching.
S511：After terminal is successfully accessed Target cell, terminal informs that eNB2 handoff procedures are completed, for example, terminal sends RRC connections to eNB2 reconfigures completion message, confirms that handoff procedure is completed to eNB2.
S512：Terminal has accessed Target cell, and can carry out service communication in Target cell, now, and eNB2 indicates the resource and context of eNB1 release terminals；
S513：The context and resource of eNB1 release terminals.
, just can be quick to set up voice bearer using the resource being ready for and handle voice call service after cell switching after it is that S1 switchings get out the resource of voice bearer in advance that MME, which notifies eNB2, reduce the time delay of audio call.
Fig. 6 is refer to, it is the schematic flow sheet of voice bearer method for building up during switching in a kind of station provided in an embodiment of the present invention.In the present embodiment, using the first access network equipment as eNB1, equipment of the core network is illustrated for MME.The neighbor cell that wherein eNB1 chooses is located in station.Therefore the switching between base station need not be carried out.
It the described method comprises the following steps：
Step S601-S603 is identical with step S401-S403, can refer to S401-S403, and here is omitted.
S604：ENB1 chooses switching flow in the neighbor cell of current persistent district, initiator, is the resource that terminal prepares voice bearer in advance.
If inscribe of standing change owner reconfigures realization by RRC, i.e., RRC reconfiguration messages are sent to terminal, be that its serving cell is used as in the neighbor cell that terminal configuration is chosen by the reconfiguration message.The RRC reconfiguration messages are properly termed as standing the switching command message of interior switching.Comprise the following steps：
S605：ENB1 sends switching command message to terminal, carries the voice bearer set up for terminal.
S606：After eNB1 is that cell switching gets out the resource of voice bearer in advance, just resource of the terminal for the voice bearer of its foundation can be informed, then it is quick to set up voice bearer using the resource being ready for and handle voice call service after the completion of cell switching, reduce the time delay of audio call.
It refer to Fig. 7, for a kind of composition schematic diagram of access network equipment provided in an embodiment of the present invention, the access network equipment is used for the foundation that terminal speech is carried, the terminal resides in the cell that the access network equipment is provided, and the access network equipment is unsuitable for setting up voice bearer, in the present embodiment, the access network equipment includes：
Request message is set up in receiving unit 100, the carrying for receiving equipment of the core network transmission, wherein, request message is set up in the carrying to be used to ask the access network equipment to set up voice bearer；
Transmitting element 200, sets up response message, response message is set up in the carrying to be used to notify the equipment of the core network voice bearer to be successfully established for sending carrying to the equipment of the core network；
Switch unit 300, for the terminal to be switched into Target cell, and foundation of the triggering voice bearer in the Target cell in handoff procedure.
Alternatively, the resident cell of the terminal is TDD cell, and the Target cell is FDD cell.
Alternatively, when the Target cell belongs to the second access network equipment, the switch unit 300 specifically for：
Voice bearer is sent to second access network equipment and sets up configured information, and the voice bearer, which sets up configured information, to be used to indicate that second access network equipment sets up voice bearer.
Alternatively, the voice bearer is set up configured information and carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message.
Alternatively, when the Target cell belongs to the access network equipment, the switch unit 300 specifically for：
It is that the terminal sets up voice bearer in the Target cell；The voice bearer for carrying and being set up for the terminal in switching command message, the switching command message is sent to the terminal.
It should be noted that access network equipment includes but is not limited to：Evolved node B, radio network controller, node B, base station controller, base transceiver station, Home eNodeB, Base Band Unit, Wifi access points etc..Receiving unit and transmitting element in the present embodiment can be access network equipment interface circuit, and the interface circuit is used to realize the communication with equipment of the core network, for example, can be S1 interface circuits, for realizing S1 interface protocols.And the interface circuit can be connected to the processor of access network equipment, processor sets up request message according to the carrying received, and response message is set up in generation carrying, and is sent to equipment of the core network by interface circuit.Switch unit can be the processor individually set up, it can also be integrated in some processor of access network equipment and realize, in addition, it can also be called by some processor of access network equipment to be stored in the form of program code in the memory of access network equipment and perform the function of above switch unit.Processor described here can be a central processing unit (Central Processing Unit, CPU), either specific integrated circuit (Application Specific Integrated Circuit, ASIC), or be arranged to implement the embodiment of the present invention one or more integrated circuits.
Fig. 8 is refer to, is the composition schematic diagram of another access network equipment provided in an embodiment of the present invention, compared with the access network equipment shown in Fig. 7, the access network equipment in the embodiment of the present invention also includes：
Acquiring unit 400, the status information of the neighbor cell for obtaining the cell that the terminal is resident；
Selecting unit 500, for the status information according to acquired in the acquiring unit 400, selects the Target cell from neighbor cell.
Alternatively, the status information includes speech business disposal ability.
Alternatively, the status information also includes one of signal quality and load or whole.
With embodiment illustrated in fig. 7 similarly, in the present embodiment receiving unit, transmitting element, switch unit realization with above example description.Acquiring unit and selecting unit realize same switch unit, and can be integrated with switch unit, can also independently realize.And acquiring unit can obtain status information by the transceiver and terminal interaction of access network equipment；It can also be interacted by the interface circuit with other access network equipments with other access network equipments, obtain status information.Processor described here can be a central processing unit (Central Processing Unit, CPU), either specific integrated circuit (Application Specific Integrated Circuit, ASIC), or be arranged to implement the embodiment of the present invention one or more collection
Into circuit.
It refer to Fig. 9, for the composition schematic diagram of another access network equipment provided in an embodiment of the present invention, the access network equipment is used for the foundation that terminal speech is carried, the terminal resides in the cell that the access network equipment is provided, and the access network equipment is unsuitable for setting up voice bearer, in the present embodiment, the access network equipment includes：
Processor 1101, first interface circuit 1102, second interface circuit 1103, memory 1104, bus 1105 and transceiver 1106, the processor 1101, first interface circuit 1102, second interface circuit 1103, transceiver 1106 and memory 1104 are connected by the bus 1105 and complete mutual communication, wherein, batch processing code is stored in the memory 1104, the processor 1101 is used to call the program code stored in the memory 1104, performs following operate：
Request message is set up in the carrying for receiving equipment of the core network transmission by first interface circuit 1102, wherein, request message is set up in the carrying to be used to ask the access network equipment to set up voice bearer；
Carrying is sent to the equipment of the core network by first interface circuit 1102 and sets up response message, response message is set up in the carrying to be used to notify the equipment of the core network voice bearer to be successfully established；
The terminal is switched to Target cell, and foundation of the triggering voice bearer in the Target cell in handoff procedure.
Alternatively, the processor 1101 is additionally operable to：
Obtain the status information of the neighbor cell for the cell that the terminal is resident；
According to acquired status information, the Target cell is selected from neighbor cell.
Specifically, processor 1101 from terminal can obtain status information by transceiver 1106, can also obtain status information by the second interface circuit 1103 of the access network equipment and other access network equipments.
Wherein, the status information includes speech business disposal ability.
Alternatively, the status information also includes one of signal quality and load or whole.
The resident cell of the terminal is TDD cell, and the Target cell is FDD cell.
When the Target cell belongs to the second access network equipment, the processor 1101 specifically for：
Voice bearer is sent to second access network equipment by second interface circuit 1103 and sets up configured information, the voice bearer, which sets up configured information, to be used to indicate that second access network equipment sets up voice bearer.
Wherein, the voice bearer is set up configured information and carried in handover request message, and the switching please
It is S1 handover requests message or X2 handover request message to seek message.
Alternatively, when the Target cell belongs to first access network equipment, the processor 1101 specifically for：
It is that the terminal sets up voice bearer in the Target cell；Sent by transceiver 1106 to the terminal and the voice bearer set up for the terminal is carried in switching command message, the switching command message.
It should be noted that processor 1101 here can be the general designation of a processor or multiple treatment elements.For example, the processor can be central processing unit (Central Processing Unit, CPU), can also be specific integrated circuit (Application Specific Integrated Circuit, ASIC), or it is arranged to implement one or more integrated circuits of the embodiment of the present invention, for example：One or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array, FPGA).
Memory 1103 can be the general designation of a storage device or multiple memory elements, and parameter, data etc. required for for storing executable program code or access network equipment operation.And memory 1103 can include random access memory (RAM), nonvolatile memory (non-volatile memory), such as magnetic disk storage, flash memory (Flash) etc. can also be included.
Bus 1104 can be industry standard architecture (Industry Standard Architecture, ISA) bus, external equipment interconnection (Peripheral Component, PCI) bus or extended industry-standard architecture (Extended Industry Standard Architecture, EISA) bus etc..The bus 1104 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Fig. 9 with a thick line, it is not intended that only one bus or a type of bus.
It refer to Figure 10, for the composition schematic diagram of another access network equipment provided in an embodiment of the present invention, the access network equipment is used for the foundation that terminal speech is carried, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, the access network equipment includes：
Receiving unit 600, configured information is set up for receiving the voice bearer that first access network equipment is sent, the voice bearer sets up configured information and sets up what is sent after request to the access network equipment in the voice bearer for receiving equipment of the core network transmission from first access network equipment；
Unit 700 is set up, is that the terminal sets up voice bearer for setting up configured information according to the voice bearer；
Transmitting element 800, response is set up for sending voice bearer to first access network equipment, to notify the first access network equipment voice bearer is set up to complete.
Alternatively, the voice bearer is set up configured information and is carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message；It is switching request acknowledgement message that the voice bearer, which sets up response,.
It should be noted that access network equipment includes but is not limited to：Evolved node B, radio network controller, node B, base station controller, base transceiver station, Home eNodeB, Base Band Unit, Wifi access points etc..Receiving unit and transmitting element in the present embodiment can be the interface circuit of access network equipment, such as X2 interface circuit or S1 interface circuits, the interface circuit is used to realize the communication with other access network equipments, configured information is set up to receive voice bearer from other access network equipments, and voice bearer is set up into response and is sent to other access network equipments；Or the interface circuit is for realizing the communication with equipment of the core network, configured information is set up to receive the voice bearer of other access network equipments of equipment of the core network forwarding, and forward voice bearer foundation to respond to other access network equipments by equipment of the core network.It can be the processor individually set up to set up unit, it can also be integrated in some processor of access network equipment and realize, in addition, it can also be called by some processor of access network equipment to be stored in the form of program code in the memory of access network equipment and perform the function of unit established above.Processor described here can be a central processing unit (Central Processing Unit, CPU), either specific integrated circuit (Application Specific Integrated Circuit, ASIC), or be arranged to implement the embodiment of the present invention one or more integrated circuits.
It refer to Figure 11, for the composition schematic diagram of another access network equipment provided in an embodiment of the present invention, the access network equipment is used for the foundation that terminal speech is carried, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, the access network equipment includes：
Processor 2101, interface circuit 2102, memory 2103 and bus 2104, the processor 2101, interface circuit 2102 and memory 2103 are connected by the bus 2104 and complete mutual communication, wherein, batch processing code is stored in the memory 2103, the processor 2101 is used to call the program code stored in the memory 2103, performs following operate：
The voice bearer for receiving the first access network equipment transmission by interface circuit 2102 sets up configured information, and the voice bearer sets up configured information and sets up what is sent after request to the access network equipment in the voice bearer for receiving equipment of the core network transmission from first access network equipment；
Configured information is set up according to the voice bearer, is that the terminal sets up voice bearer；
Voice bearer is sent to first access network equipment by interface circuit 2102 and sets up response, to notify the first access network equipment voice bearer is set up to complete.
Above interface circuit 2102 can be the interface circuit interacted with other access network equipments, for example X2 interface circuit, and other access network equipments are sent to set up configured information from other access network equipments reception voice bearer, and voice bearer is set up into response；It can also be the interface circuit interacted with equipment of the core network, such as S1 interface circuits, configured information is set up with the voice bearer for the other access network equipments for receiving equipment of the core network forwarding, and forwards voice bearer to set up by equipment of the core network and responds to other access network equipments.
Alternatively, the voice bearer is set up configured information and is carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message；It is switching request acknowledgement message that the voice bearer, which sets up response,.
It should be noted that processor 2101 here can be the general designation of a processor or multiple treatment elements.For example, the processor can be central processing unit (Central Processing Unit, CPU), can also be specific integrated circuit (Application Specific Integrated Circuit, ASIC), or it is arranged to implement one or more integrated circuits of the embodiment of the present invention, for example：One or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array, FPGA).
Memory 2103 can be the general designation of a storage device or multiple memory elements, and parameter, data etc. required for for storing executable program code or the operation of access network management equipment.And memory 2103 can include random access memory (RAM), nonvolatile memory (non-volatile memory), such as magnetic disk storage, flash memory (Flash) etc. can also be included.
Bus 2104 can be industry standard architecture (Industry Standard Architecture, ISA) bus, external equipment interconnection (Peripheral Component, PCI) bus or extended industry-standard architecture (Extended Industry Standard Architecture, EISA) bus etc..The bus 1104 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 11 with a thick line, it is not intended that only one bus or a type of bus.
It should be noted that each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be between the difference with other embodiments, each embodiment identical similar part mutually referring to.For device embodiment, because it is substantially similar to embodiment of the method, so
What is described is fairly simple, and the relevent part can refer to the partial explaination of embodiments of method.
By the description of above-described embodiment, the present invention has advantages below：
First access network equipment is when request message is set up in the carrying for receiving equipment of the core network transmission, carrying, which is sent, to equipment of the core network sets up response message, equipment of the core network voice bearer is notified to set up layer, then when switching the terminal into Target cell, foundation of the voice bearer in the Target cell is triggered in handoff procedure, so, when the first access network equipment is unsuitable for setting up voice bearer, although it does not set up voice bearer, but still have sent the response message that carrying is successfully established to equipment of the core network, so that equipment of the core network would not think that failure is set up in carrying, and wait the cell newly cut to terminal again after handover success to send carrying and set up request message, guarantee has been carried out for the continuation communication in later handover processes after Target cell gets out voice resource, so that the resource prepared in advance can be used directly after cell switching is carried out and set up voice bearer for terminal, complete the processing to voice call service, reduce the time delay of audio call, reduce the time of user's wait.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can be completed by the related hardware of programmed instruction, and foregoing program can be stored in a computer read/write memory medium, and the program upon execution, performs the step of including above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
The method for building up and access network equipment of a kind of voice bearer provided above the embodiment of the present invention are described in detail, specific case used herein is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help to understand method and its core concept of the invention；Simultaneously for those of ordinary skill in the art, according to the thought of the present invention, it will change in specific embodiments and applications, in summary, this specification content should not be construed as limiting the invention.
Claims (20)
- A kind of method for building up of voice bearer, the foundation carried for terminal speech, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, it is characterised in that methods described includes：Request message is set up in the carrying that first access network equipment receives equipment of the core network transmission, wherein, request message is set up in the carrying to be used to ask first access network equipment to set up voice bearer；First access network equipment sends carrying to the equipment of the core network and sets up response message, and response message is set up in the carrying to be used to notify the equipment of the core network voice bearer to be successfully established；The terminal is switched to Target cell, and foundation of the triggering voice bearer in the Target cell in handoff procedure by first access network equipment.
- The method as described in claim 1, it is characterised in that the terminal is switched to before Target cell by first access network equipment, in addition to：First access network equipment obtains the status information of the neighbor cell for the cell that the terminal is resident；According to acquired status information, the Target cell is selected from neighbor cell.
- Method as claimed in claim 2, it is characterised in that the status information includes speech business disposal ability.
- Method as claimed in claim 3, it is characterised in that the status information also includes one of signal quality and load or whole.
- Method as described in any one of Claims 1-4, it is characterised in that the resident cell of the terminal is TDD cell, the Target cell is FDD cell.
- Method as described in any one of claim 1 to 5, it is characterised in that when the Target cell belongs to the second access network equipment, first access network equipment triggers voice bearer in institute in handoff procedure The foundation of Target cell is stated, including：First access network equipment sends voice bearer to second access network equipment and sets up configured information, and the voice bearer, which sets up configured information, to be used to indicate that second access network equipment sets up voice bearer.
- Method as claimed in claim 6, it is characterised in that the voice bearer is set up configured information and carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message.
- Method as described in any one of claim 1 to 5, it is characterised in that when the Target cell belongs to first access network equipment, first access network equipment triggers foundation of the voice bearer in the Target cell in handoff procedure, in addition to：It is that the terminal sets up voice bearer in the Target cell；The voice bearer for carrying and being set up for the terminal in switching command message, the switching command message is sent to the terminal.
- A kind of method for building up of voice bearer, the foundation carried for terminal speech, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, and methods described includes：The voice bearer that second access network equipment receives the first access network equipment transmission sets up configured information, and the voice bearer sets up configured information and sets up what is sent after request to second access network equipment in the voice bearer for receiving equipment of the core network transmission from first access network equipment；Second access network equipment sets up configured information according to the voice bearer, is that the terminal sets up voice bearer；Second access network equipment sends voice bearer to first access network equipment and sets up response, to notify the first access network equipment voice bearer is set up to complete.
- Method according to claim 9, it is characterised in that the voice bearer is set up configured information and is carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message；It is switching request acknowledgement message that the voice bearer, which sets up response,.
- A kind of access network equipment, the foundation carried for terminal speech, the terminal resides in the cell that the access network equipment is provided, and the access network equipment is unsuitable for setting up voice bearer, it is characterised in that the access network equipment includes：Request message is set up in receiving unit, the carrying for receiving equipment of the core network transmission, wherein, request message is set up in the carrying to be used to ask the access network equipment to set up voice bearer；Transmitting element, sets up response message, response message is set up in the carrying to be used to notify the equipment of the core network voice bearer to be successfully established for sending carrying to the equipment of the core network；Switch unit, for the terminal to be switched into Target cell, and foundation of the triggering voice bearer in the Target cell in handoff procedure.
- Access network equipment as claimed in claim 11, it is characterised in that the access network equipment also includes：Acquiring unit, the status information of the neighbor cell for obtaining the cell that the terminal is resident；Selecting unit, for the status information according to acquired in the acquiring unit, selects the Target cell from neighbor cell.
- Access network equipment as claimed in claim 12, it is characterised in that the status information includes speech business disposal ability.
- Access network equipment as claimed in claim 13, it is characterised in that the status information also includes one of signal quality and load or whole.
- Access network equipment as described in claim any one of 11-14, it is characterised in that the resident cell of the terminal is TDD cell, the Target cell is FDD cell.
- Access network equipment as described in claim any one of 11-15, it is characterised in that when the Target cell belongs to the second access network equipment, the switch unit specifically for：Voice bearer is sent to second access network equipment and sets up configured information, and the voice bearer, which sets up configured information, to be used to indicate that second access network equipment sets up voice bearer.
- Access network equipment as claimed in claim 16, it is characterised in that the voice bearer is set up configured information and carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message.
- Access network equipment as described in claim any one of 11-15, it is characterised in that when the Target cell belongs to the access network equipment, the switch unit specifically for：It is that the terminal sets up voice bearer in the Target cell；The voice bearer for carrying and being set up for the terminal in switching command message, the switching command message is sent to the terminal.
- A kind of access network equipment, the foundation carried for terminal speech, the terminal resides in the cell that the first access network equipment is provided, and first access network equipment is unsuitable for setting up voice bearer, it is characterised in that the access network equipment includes：Receiving unit, configured information is set up for receiving the voice bearer that first access network equipment is sent, the voice bearer sets up configured information and sets up what is sent after request to the access network equipment in the voice bearer for receiving equipment of the core network transmission from first access network equipment；Unit is set up, is that the terminal sets up voice bearer for setting up configured information according to the voice bearer；Transmitting element, response is set up for sending voice bearer to first access network equipment, to notify the first access network equipment voice bearer is set up to complete.
- Access network equipment as claimed in claim 19, it is characterised in thatThe voice bearer is set up configured information and is carried in handover request message, and the handover request message is S1 handover requests message or X2 handover request message；It is switching request acknowledgement message that the voice bearer, which sets up response,.
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| CN111356248A (en) * | 2018-12-20 | 2020-06-30 | 大唐移动通信设备有限公司 | Method and device for establishing connection between access network devices |
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Also Published As
| Publication number | Publication date |
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| WO2017035697A1 (en) | 2017-03-09 |
| JP2018529291A (en) | 2018-10-04 |
| CN106717057B (en) | 2020-07-10 |
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