CN103686906A - Method for switching network, terminal equipment and gateway equipment - Google Patents
Method for switching network, terminal equipment and gateway equipment Download PDFInfo
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Abstract
The invention provides a method for switching a network, terminal equipment and gateway equipment. The method comprises the steps that whether PS services and CS services exist in the current network at the same time or not is determined by the terminal equipment; if the PS services and the CS services exist in the current network at the same time, whether the PS services and the CS services meet a switching condition or not is determined; if the PS services and the CS services meet the switching condition, the identification information of a first network element is acquired, wherein an opposite terminal service communication party in the CS services belongs to the first network element; a PS service switching request is sent to second gateway equipment of a target network through the first gateway equipment in the current network, and the switching request comprises the contextual information of the PS services and the identification information so that the second gateway equipment can switch the PS services and the CS services into the target network according to the contextual information and the identification information. The switching request of the PS services and the switching request of the CS services can be sent to the second PS gateway equipment simultaneously through the one-time communication connection of the first gateway equipment and the second gateway equipment of the target network, the complex interaction process of related switching interfaces is simplified, and the switching success rate is improved.
Description
Technical field
The invention belongs to wireless communication technology field, specifically relate to a kind of method for switching network, terminal equipment and gateway device.
Background technology
Along with Long Term Evolution project (Long Term Evolution, hereinafter to be referred as LTE) development of network technology, LTE network has covered a lot of hot zones, make in current communication system, (3rd-generation, hereinafter to be referred as 3G) is network coexisted for LTE network and 3G (Third Generation) Moblie technology.As the packet switching system of a kind of packet domain (Packet Switch, hereinafter to be referred as PS) territory carrying, LTE network can be supported data service at a high speed, and voice class business can only transmission in its packet domain carrying.In order to make full use of the high-rate characteristics of LTE network, in a lot of situations, terminal need to be switched to LTE network from current 3G network by ongoing communication service.
Due in 3G network, data service is carried on PS territory, and speech business is carried on circuit domain (Circuit Switch, hereinafter to be referred as CS) on, therefore, when data service and speech business need to switch simultaneously, terminal need be set up respectively the transmission channel between the CS territory of 3G network and the PS territory of the PS territory of LTE network and 3G network and the PS territory of LTE network by different network elements.Particularly, in prior art, if terminal need switch to LTE network from 3G network by PS business and CS business, after related objective network element in determining LTE network, terminal need be by processing PS business in 3G network the network equipment set up transmission channel as GPRS serving GPRS support node and this target network element, to complete the switching of PS business; Simultaneously, the network equipment of terminal by processing CS business in 3G network connects with this target network element as base station, mobile switching centre etc., because this target network element is PS domain network element, the network equipment of processing CS business in 3G network had both needed terminal to process to the access of this target network element, had needed again CS territory to change between the territory in PS territory.
The above-mentioned mode of setting up respectively transmission channel by CS business network equipment and PS business network equipment and target network element, need terminal set up independently twice with being connected of target network element, and different due to the business of CS business network equipment and target network element carrying, also need to carry out to change between territory etc. mutual between the two, make network switching process relate to the mutual of a plurality of LA Management Rooms, reciprocal process is numerous and diverse.
Summary of the invention
For problems of the prior art, the invention provides a kind of method for switching network, terminal equipment and gateway device, the defect that while switching in order to overcome network in prior art, rete mirabile interactive interfacing is complicated, handover failure rate is high.
The invention provides a kind of method for switching network, comprising:
Terminal equipment determines in current network, whether have to be switched packet domain PS business and circuit domain CS business simultaneously;
If exist, described terminal equipment determines whether to meet switching condition;
If meet, described terminal equipment obtains the identification information of the first network element of service communication side, opposite end ownership in described CS business;
Described terminal equipment is the second gateway device transmission PS business handover request to objective network by the first gateway device in current network, described handover request comprises contextual information and the described identification information of described PS business, so that described the second gateway device is according to described contextual information and described identification information, described PS business and CS business are switched in objective network, and described the first gateway device and described the second gateway device are PS gateway device.
The invention provides another method for switching network, comprising:
The second gateway device receiving terminal apparatus of objective network is by the PS business handover request of the first gateway device transmission of current network, to be described terminal equipment send determining after having to be switched PS business and CS business and meeting switching condition simultaneously described handover request, described handover request comprises the identification information of the first network element of service communication side, opposite end ownership in the contextual information of described PS business and described CS business, and described the first gateway device and described the second gateway device are PS gateway device;
Described the second gateway device, according to described contextual information and described identification information, switches to described PS business and CS business in objective network.
The invention provides a kind of terminal equipment, comprising:
The first determination module, for determine whether current network exists to be switched packet domain PS business and circuit domain CS business simultaneously;
The second determination module, for determining whether to meet switching condition;
Acquisition module, for obtaining the identification information of the first network element of service communication side, described CS business opposite end ownership;
Sending module, the second gateway device transmission PS business handover request for the first gateway device by current network to objective network, described handover request comprises contextual information and the described identification information of described PS business, so that described the second gateway device is according to described contextual information and described identification information, described PS business and CS business are switched in objective network, and described the first gateway device and described the second gateway device are PS gateway device.
The invention provides a kind of gateway device, comprising:
Receiver module, for receiving terminal apparatus, pass through the PS business handover request of the first gateway device transmission of current network, to be described terminal equipment send determining after having to be switched PS business and CS business and meeting switching condition simultaneously described handover request, described handover request comprises the identification information of the first network element of service communication side, opposite end ownership in the contextual information of described PS business and described CS business, and described gateway device and described the first gateway device are PS gateway device;
Processing module, for according to described contextual information and described identification information, switches to described PS business and CS business in objective network.
Method for switching network provided by the invention, terminal equipment and gateway device, definite, there is PS business and CS business simultaneously and meet after switching condition in terminal equipment, by obtaining the identification information of the first network element of service communication side, opposite end ownership in CS business, and this identification information is added in the PS business handover request of a PS gateway device that sends to current network, the one PS gateway device is being received on the basis of the PS business handover request corresponding with the type of service of its processing, also receive the identification information of the first network element of service communication side, CS business opposite end ownership, thereby the once communication connection of the 2nd PS gateway device only by a PS gateway device and objective network can send to the 2nd PS gateway device by the handover request of PS business and CS business simultaneously, so that the 2nd PS gateway device can be PS business and CS traffic assignments Internet resources simultaneously, greatly simplified the complex interaction process of relevant interface in current network and objective network.
Accompanying drawing explanation
Fig. 1 is the flow chart of method for switching network embodiment mono-of the present invention;
Fig. 2 is the flow chart of another method for switching network embodiment mono-of the present invention;
Fig. 3 is the schematic diagram of terminal equipment embodiment mono-of the present invention;
Fig. 4 is the schematic diagram of gateway device embodiment mono-of the present invention.
Embodiment
Fig. 1 is the flow chart of method for switching network embodiment mono-of the present invention, as shown in Figure 1, the method for switching network that the present embodiment provides is applicable to the scene that different system is switched, be particularly useful for from supporting the system of the service of PS territory and the service of CS territory to be switched to the situation of supporting PS domain system, for example 3G network simultaneously support terminal equipment carry out PS business and CS business, and LTE network is only supported the service of PS territory, can use the method that the present embodiment provides the ongoing PS business of 3G network terminal equipment and CS business to be switched in LTE network simultaneously.The executive agent of the present embodiment is terminal equipment, for example smart phone.The method comprises:
In the present embodiment, only, when terminal equipment determines that it exists PS business and CS business simultaneously, just trigger the deterministic process of switching condition.And if only have PS business or CS business carrying out, can use existing changing method that PS business or CS business are switched to target LTE network from current 3G network.Wherein, PS business refers to that employing grouping exchange method carries out the business of transfer of data, and such as being web page browsing etc., CS business refers to and adopts circuit switching method to carry out the business of transfer of data, is typically voice calling service.
Particularly, terminal equipment can be determined current PS business and the CS business of whether simultaneously existing by the service identification detecting in the packet of its ongoing applied business.When determine while existing simultaneously, trigger determining that whether switching condition meet.Specifically, if terminal equipment detects the signal strength signal intensity of target LTE network, be greater than the first preset value, and the service quality of the PS business of simultaneously carrying out and the PS business in CS business is less than the second preset value, this terminal equipment is determined and is met switching condition.In the present embodiment, the service quality of PS business can be for example the transmission rate of PS business, when transmission rate illustrates that the service quality of PS business in current network is poor during lower than preset value.And the deterministic process of target LTE network is prior art, repeat no more.
In the present embodiment, because target LTE network is PS territory network, in order to realize terminal equipment in current network, the PS business of simultaneously carrying out and CS business are switched to target LTE network simultaneously, therefore the PS gateway device in current network the PS gateway device in the first gateway device and target LTE network the second gateway device carry out PS business and CS business to the handoff process of target LTE network.Wherein, PS gateway device in current network, the first gateway device can be for example GPRS serving GPRS support node (Serving GPRS Support Node, hereinafter to be referred as SGSN), PS gateway device in target LTE network can be for example Mobility Management Entity (Mobile Management Entity, hereinafter to be referred as MME), gateway (Serving Gateway, hereinafter to be referred as SGW).
Because the first gateway device is PS gateway device, the first gateway device is for processing such as the access of PS business, transmission, and CS business should be processed by corresponding processing net element, such as mobile switching centre (Mobile Switching Center, hereinafter to be referred as MSC).Now in order to make the first gateway device can process the switching of PS business and CS business simultaneously, first terminal equipment need to obtain the identification information of the first network element of service communication side, opposite end ownership in CS business, and this identification information is added in PS business handover request, so that the contextual information that had not only contained PS business in the PS business handover request that the first gateway device receives but also the object communication network element that contains CS business, it is the identification information of described the first network element, thereby while making the first gateway device that this handover request is sent to the second gateway device of target LTE network, the second gateway device can be known the handover request that simultaneously has PS business and CS business, be respectively this two kinds of traffic assignments Internet resources, finally make these two business switch in target LTE network.Wherein, the network element of service communication side, opposite end that described the first network element is CS business ownership, this network element be such as being MSC, base station etc., correspondingly, the identification information of the first network element is such as the identification information, Base transceiver Station Identity Code etc. that are MSC; Described PS business contexts information is the control information of PS business, such as comprising source address, destination address, quality of service requirement etc.
Concrete, terminal equipment can obtain the identification information of this first network element in the following manner: terminal equipment sends the request of obtaining of the identification information that obtains described the first network element to the second network element of ownership, so that described the second network element by and described the first network element between communication link and described the first network element set up mutual, obtain described identification information and send to described terminal equipment; Terminal equipment receives the described identification information that described the second network element sends.The second network element of terminal equipment in the present embodiment ownership be terminal equipment ownership, for the treatment of the network element of its ongoing CS business, such as being MSC.What deserves to be explained is, in the present embodiment, if the service communication side, opposite end of terminal equipment and CS business in the compass of competency of same MSC, the first network element and the second network element are same network element, i.e. this MSC; If the service communication side, opposite end of terminal equipment and CS business is not in the compass of competency of same MSC, the first network element and the second network element are different network elements, the first network element is the MSC1 of terminal equipment ownership, and the second network element is the MSC2 of service communication side, opposite end ownership.With the first network element and the second network element, be not all example, because terminal equipment is current, carrying out CS business, therefore, between the first network element and the second network element, there is communication link, and generally speaking, the second network element is after the communication link of foundation and the first network element, do not preserve the identification information of the first network element, therefore, terminal equipment sends obtaining after request of the first network element ID information of obtaining at the second network element to ownership, the second network element forwards this by the communication link of having set up to the first network element and obtains request, and the self identification information that the first network element receiving is sent sends to terminal equipment, thereby terminal equipment receives the described identification information that the second network element sends.
In the present embodiment, definite, there is PS business and CS business simultaneously and meet after switching condition in terminal equipment, by obtaining the identification information of the first network element of service communication side, opposite end ownership in CS business, and this identification information is added in the PS business handover request of a PS gateway device that sends to current network, the one PS gateway device is being received on the basis of the PS business handover request corresponding with the type of service of its processing, also receive the identification information of the first network element of service communication side, opposite end ownership in CS business, thereby the once communication connection of the 2nd PS gateway device only by a PS gateway device and objective network can send to the 2nd PS gateway device by the handover request of PS business and CS business simultaneously, so that the 2nd PS gateway device can be PS business and CS traffic assignments Internet resources simultaneously, greatly simplified the complex interaction process of relevant interface in current network and objective network.
Fig. 2 is the flow chart of another method for switching network embodiment mono-of the present invention, and the method comprises:
The second gateway device receiving terminal apparatus of step 201, objective network is by the PS business handover request of the first gateway device transmission of current network, to be described terminal equipment send determining after having to be switched PS business and CS business and meeting switching condition simultaneously described handover request, described handover request comprises the identification information of the first network element of service communication side, opposite end ownership in the contextual information of described PS business and described CS business, and described the first gateway device and described the second gateway device are PS gateway device;
Step 202, described the second gateway device, according to described contextual information and described identification information, switch to described PS business and CS business in objective network.
In the present embodiment, after the identification information of first network element of service communication side, opposite end ownership in receiving the PS business contexts information that carries that first gateway device of terminal equipment by current network send and CS business of the second gateway device in target LTE network, according to described contextual information and described identification information, described PS business and CS business are switched in objective network.
Particularly, the second gateway device, according to described contextual information and described identification information, switches to described PS business and CS business in objective network, comprising:
The second gateway device is described PS traffic assignments first network resource according to described contextual information, to use PS business described in described first network resource transmission, and the communication connection with described the first network element according to described identification information foundation, and be described CS traffic assignments second network resource, to use CS business described in described second network resource transmission.
In the present embodiment, the second gateway device is PS traffic assignments Internet resources according to PS business contexts information, such as transmission bandwidth, frequency spectrum resource etc., and utilize the Internet resources that distribute to carry out PS business to its object communication party's transmission; Simultaneously, because CS business is circuit domain business, at both call sides, converse, can be understood as and carry out before transfer of data, need to first set up the communication connection with object communication party, therefore, the second gateway device is according to the identification information of described the first network element, sets up the communication connection with the first network element, and then is CS traffic assignments Internet resources, such as transmission rate etc., and utilize the network resource transmission CS business distributing.
In the present embodiment, after the PS business handover request of the second gateway device identification information of the first network element of service communication side, opposite end ownership in receiving the contextual information that contains PS business and described CS business, according to described contextual information and described identification information, described PS business and CS business are switched in objective network.Because this handover request is only to send by the PS gateway device in terminal equipment current network, guaranteed that the switching of CS business and the switching of PS business all ask same the second gateway device, simplified in prior art and need between a plurality of network element interfaces, carry out mutual complexity.
Fig. 3 is the schematic diagram of terminal equipment embodiment mono-of the present invention, and as shown in Figure 3, this equipment comprises:
The first determination module 11, for determine whether current network exists to be switched packet domain PS business and circuit domain CS business simultaneously;
The second determination module 12, for determining whether to meet switching condition;
Sending module 14, the second gateway device transmission PS business handover request for the first gateway device by current network to objective network, described handover request comprises contextual information and the described identification information of described PS business, so that described the second gateway device is according to described contextual information and described identification information, described PS business and CS business are switched in objective network, and described the first gateway device and described the second gateway device are PS gateway device.
Further, described acquisition module 13, comprising:
Transmitting element 131, for send the request of obtaining of the identification information that obtains described the first network element to the second network element of ownership, so that described the second network element by and described the first network element between communication link and described the first network element set up mutual, obtain described identification information and send to described terminal equipment;
Receiving element 132, the described identification information sending for receiving described the second network element.
Further, described the second determination module 12, specifically for:
If described terminal equipment detects the signal strength signal intensity of described objective network and is greater than the first preset value, and the service quality of described PS business is less than the second preset value, and described terminal equipment is determined and met switching condition.
The equipment of the present embodiment can be for the technical scheme of embodiment of the method shown in execution graph 1, and it realizes principle and technique effect is similar, repeats no more herein.
Fig. 4 is the schematic diagram of gateway device embodiment mono-of the present invention, and as shown in Figure 4, this equipment comprises:
Further, described processing module 22, specifically for:
According to described contextual information, it is described PS traffic assignments first network resource, to use PS business described in described first network resource transmission, and the communication connection with described the first network element according to described identification information foundation, and be described CS traffic assignments second network resource, to use CS business described in described second network resource transmission.
The equipment of the present embodiment can be for the technical scheme of embodiment of the method shown in execution graph 2, and it realizes principle and technique effect is similar, repeats no more herein.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a method for switching network, is characterized in that, comprising:
Terminal equipment determines in current network, whether have to be switched packet domain PS business and circuit domain CS business simultaneously;
If exist, described terminal equipment determines whether to meet switching condition;
If meet, described terminal equipment obtains the identification information of the first network element of service communication side, opposite end ownership in described CS business;
Described terminal equipment is the second gateway device transmission PS business handover request to objective network by the first gateway device in current network, described handover request comprises contextual information and the described identification information of described PS business, so that described the second gateway device is according to described contextual information and described identification information, described PS business and CS business are switched in objective network, and described the first gateway device and described the second gateway device are PS gateway device.
2. method according to claim 1, is characterized in that, described terminal equipment obtains the identification information of the first network element of service communication side, opposite end ownership in described CS business, comprising:
Described terminal equipment sends the request of obtaining of the identification information that obtains described the first network element to the second network element of ownership, so that described the second network element by and described the first network element between communication link and described the first network element set up mutual, obtain described identification information and send to described terminal equipment;
Described terminal equipment receives the described identification information that described the second network element sends.
3. method according to claim 1 and 2, is characterized in that, described terminal equipment determines whether to meet switching condition, comprising:
If described terminal equipment detects the signal strength signal intensity of described objective network and is greater than the first preset value, and the service quality of described PS business is less than the second preset value, and described terminal equipment is determined and met switching condition.
4. a method for switching network, is characterized in that, comprising:
The second gateway device receiving terminal apparatus of objective network is by the PS business handover request of the first gateway device transmission of current network, to be described terminal equipment send determining after having to be switched PS business and CS business and meeting switching condition simultaneously described handover request, described handover request comprises the identification information of the first network element of service communication side, opposite end ownership in the contextual information of described PS business and described CS business, and described the first gateway device and described the second gateway device are PS gateway device;
Described the second gateway device, according to described contextual information and described identification information, switches to described PS business and CS business in objective network.
5. method according to claim 4, is characterized in that, described the second gateway device, according to described contextual information and described identification information, switches to described PS business and CS business in objective network, comprising:
Described the second gateway device is described PS traffic assignments first network resource according to described contextual information, to use PS business described in described first network resource transmission, and the communication connection with described the first network element according to described identification information foundation, and be described CS traffic assignments second network resource, to use CS business described in described second network resource transmission.
6. a terminal equipment, is characterized in that, comprising:
The first determination module, for determine whether current network exists to be switched packet domain PS business and circuit domain CS business simultaneously;
The second determination module, for determining whether to meet switching condition;
Acquisition module, for obtaining the identification information of the first network element of service communication side, described CS business opposite end ownership;
Sending module, the second gateway device transmission PS business handover request for the first gateway device by current network to objective network, described handover request comprises contextual information and the described identification information of described PS business, so that described the second gateway device is according to described contextual information and described identification information, described PS business and CS business are switched in objective network, and described the first gateway device and described the second gateway device are PS gateway device.
7. equipment according to claim 6, is characterized in that, described acquisition module, comprising:
Transmitting element, for send the request of obtaining of the identification information that obtains described the first network element to the second network element of ownership, so that described the second network element by and described the first network element between communication link and described the first network element set up mutual, obtain described identification information and send to described terminal equipment;
Receiving element, the described identification information sending for receiving described the second network element.
8. according to the equipment described in claim 6 or 7, it is characterized in that, described the second determination module, specifically for:
If described terminal equipment detects the signal strength signal intensity of described objective network and is greater than the first preset value, and the service quality of described PS business is less than the second preset value, and described terminal equipment is determined and met switching condition.
9. a gateway device, is characterized in that, comprising:
Receiver module, for receiving terminal apparatus, pass through the PS business handover request of the first gateway device transmission of current network, to be described terminal equipment send determining after having to be switched PS business and CS business and meeting switching condition simultaneously described handover request, described handover request comprises the identification information of the first network element of service communication side, opposite end ownership in the contextual information of described PS business and described CS business, and described gateway device and described the first gateway device are PS gateway device;
Processing module, for according to described contextual information and described identification information, switches to described PS business and CS business in objective network.
10. equipment according to claim 9, is characterized in that, described processing module, specifically for:
According to described contextual information, it is described PS traffic assignments first network resource, to use PS business described in described first network resource transmission, and the communication connection with described the first network element according to described identification information foundation, and be described CS traffic assignments second network resource, to use CS business described in described second network resource transmission.
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