CN107211336A - Method for controlling user equipment to access high-speed mobile tool communication network - Google Patents

Abstract

The embodiment of the invention provides a communication method, core network control plane node equipment, a base station and a communication system. The method comprises the following steps: after User Equipment (UE) accesses a second communication network, first core network control plane node equipment identifies the UE as a first type UE; the first core network control plane node equipment sends indication information to a base station serving the UE, wherein the indication information is used for indicating that the UE is a first type UE so that the base station can access the UE to a first communication network; wherein the first type of UE is a UE used by a user riding a high-speed moving tool, and the first communication network comprises a high-speed moving tool communication network. The embodiment of the invention improves the user experience of the first type UE.

Description

Method for controlling user equipment to access high-speed mobile tool communication network technical field

The present invention relates to the technical field of mobile communication, in particular to a method for controlling user equipment to access a high-speed mobile tool communication network, a core network control plane node device, a base station and a communication system.

Background technique

High-speed mobile tools are developing rapidly in our country and around the world. For example, high-speed mobile tools include high-speed railway trains (hereinafter referred to as "high-speed railways"), maglev trains, subways, etc. Taking high-speed rail as an example, the operating mileage of high-speed rail has reached more than 30,000 kilometers and is showing a trend of rapid growth. With the large-scale high-end crowd, the frequent flow of high-speed mobile tools for a long time, and the demand for information construction of high-speed mobile tools themselves, the communication needs of high-speed mobile tools are becoming increasingly strong.

However, high-speed mobile tool communication is different from conventional indoor and outdoor mobile communication scenarios. Due to factors such as fast train speed, large body penetration loss, and complex and changeable scene terrain, the existing public network is not suitable for high-speed transportation. Provide services to users of mobile tools. Therefore, the demand for building a network dedicated to providing services for high-speed mobile users has become increasingly prominent. The "public network" here refers to a general wireless cellular communication network that is different from the above-mentioned private network. The private network and the public network can be different public land mobile networks (English: public land mobile network, abbreviated as: PLMN); or, it can also be the division of two types of network areas under the same PLMN, and the two can be separated in space Overlap, but use different access frequency points. For example, some equipment vendors and operators have already begun to plan and deploy such a high-speed rail dedicated wireless network (hereinafter referred to as "high-speed rail private network"). The high-speed rail network covers the high-speed rail on the way and near the platform of the high-speed rail station. The cell deployment in the high-speed rail station area is shown in Figure 1A. The waiting room 102, the access channel 103, the platform 104, and the community 106 of the high-speed railway station are all planned as private communities under the coverage of the high-speed railway private network. The railway station square outside the railway station is planned to belong to the public network community 105. At present, the high-speed rail network planning will deploy private network cells and public network cells independently. In view of the characteristics of railway line coverage, the high-speed rail private network adopts the scheme of cascading and continuous coverage of cells, as shown in Figure 1B. In the example in FIG. 1B , the track area of the high-speed rail is continuously covered by cascaded private network cells 111 , and the public network cell 115 also covers the track area of the high-speed rail.

The public network and the high-speed rail private network adopt the following coordination principles:

(1) In most areas of the high-speed rail line (for example, on the way of the high-speed rail), the high-speed rail private network community and the surrounding public network community do not have a neighbor relationship. That is to say, the private network cell is only equipped with the cascaded cell under the private network as the adjacent cell, and does not configure the public network as the adjacent cell; the public network cell does not configure the private network cell as the adjacent cell;

(2) The public network cell and the private network cell are configured to be adjacent to each other near the platform of the railway station, so that the first type UE enters the private network cell (such as the public network cell 105 in Figure 1A) from the public network cell (such as The public network cell 101 in FIG. 1A) or enter the public network cell from the private network cell.

On the way of the high-speed rail, since there is no mutual neighbor relationship between the high-speed rail private network cells and the surrounding public network cells, in general, the user equipment (English: user equipment, referred to as: UE) will not easily change from one to the other in the idle state. A network cell (such as the public network cell 115 in Figure 1B) performs cell reselection to another network cell (such as the private network cell 111 in Figure 1A), and it will not easily perform a handover process to switch to another network cell in the connected state. network community. Therefore, when the high-speed mobile tool is traveling, when the UE leaves the high-speed mobile tool communication network due to abnormal reasons and accesses the public network, the existing technology cannot enable the UE to quickly return to the high-speed mobile tool communication network, which affects the high-speed mobile tool communication network. User experience for users of mobile tools.

Contents of the invention

Embodiments of the present invention provide a communication method, a core network control plane node device, a base station, and a communication system, so as to improve user experience of users riding high-speed mobile tools.

In a first aspect, an embodiment of the present invention provides a communication method, including:

After the user equipment UE accesses the second communication network, the first core network control plane node device identifies the UE as the first type UE; and

The first core network control plane node device sends indication information to the base station serving the UE, where the indication information is used to indicate that the UE is a first-type UE, so that the base station connects the UE to the first Communications network;

Wherein, the first type of UE is a UE used by a user riding a high-speed mobile tool, The first communication network includes a high speed mobility communication network.

In a first possible implementation manner of the first aspect, the first communication network and the second communication network are different public land mobile networks (PLMNs), or the first communication network and the second communication network The communication network is the same PLMN, but uses different access frequency points.

With reference to the first aspect, or the first possible implementation manner of the first aspect, in a second possible implementation manner, the first core network control plane node device sends the indication information to the base station, so that when After receiving the indication information, the base station redirects the UE to the first communication network.

With reference to the first aspect, or the first possible implementation manner of the first aspect, in a third possible implementation manner, the method further includes:

The first core network control plane node device allocates a first wireless access system/frequency point priority user profile identifier SPID value to the UE;

The indication information is the first SPID value, and the first core network control plane node device sends indication information to the base station serving the UE, including:

The first core network control plane node device sends the first SPID value to the base station, where the first SPID value is used to instruct the base station to send first frequency point priority information to the UE, where the The first frequency point priority information is used to instruct the UE to preferentially select a frequency point of the first communication network to camp on.

With reference to the first aspect, or any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner, the first core network control plane node device sends a Send instructions, including:

The first core network control plane node device sends a context release command message to the base station, where the context release command message carries the indication information.

With reference to the first aspect, or any one of the first to third possible implementation manners of the first aspect, in a fifth possible implementation manner, the first core network control plane node device sends a Send instructions, including:

The first core network control plane node device sends an initial context establishment request message to the base station, where the initial context establishment request message carries the indication information;

Alternatively, the first core network control plane node device sends a context modification request message to the base station, where the context modification request message carries the indication information.

With reference to the first aspect, or any one of the first to third possible implementation manners of the first aspect, in a sixth possible implementation manner, the first core network control plane node device sends a Send instructions, including:

The first core network control plane node device sends a downlink non-access stratum NAS direct transmission message to the base station, where the downlink NAS direct transmission message carries the indication information.

With reference to the first aspect, or any one of the first to third possible implementation manners of the first aspect, in a seventh possible implementation manner, the method further includes:

The first core network control plane node device receives the mobility management area update request message sent by the UE.

With reference to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner, the mobility management area update request message carries an original mobility management area code;

The first core network control plane node device identifying the UE as a first type UE includes:

When the original mobility management area code is the mobility management area code of the first communication network, the control plane node device of the first core network determines that the UE is the first Type UE.

With reference to the first aspect, or any one of the first to seventh possible implementation manners of the first aspect, in a ninth possible implementation manner, the first core network control plane node device identifies that the UE is the first A type of UE, including:

The first core network control plane node device sends a user context request message to the second core network control plane node device;

The first core network control plane node device receives a user context response message sent by the second core network control plane node device, where the user context response message includes the indication information;

The first core network control plane node device determines that the UE is a first type UE according to the indication information.

With reference to the first aspect, or any one of the first to seventh possible implementation manners of the first aspect, in a tenth possible implementation manner, the first core network control plane node device is the first communication network Sharing the deployed core network control plane node device with the second communication network, the method further includes:

Before the UE accesses the second communication network, the first core network control plane node device identifies the UE as a first-type UE, and records the identity of the UE and the first-type UE Mapping relations;

The first core network control plane node device identifying the UE as a first type UE includes:

The first core network control plane node device receives the ID reported by the UE, and determines that the UE is a first-type UE according to the ID and the mapping relationship.

With reference to the first aspect, or any one of the first to seventh possible implementation manners of the first aspect, in an eleventh possible implementation manner, the first core network control plane node device identifies that the UE is Type 1 UE, including:

The first core network control plane node device receives the dedicated identifier reported by the UE, and the dedicated identifier is sent to the UE by the second core network control plane node device before the UE accesses the second communication network issued, the dedicated identifier is used to indicate that the UE is a first-type UE;

The first core network control plane node device determines that the UE is a first type UE according to the dedicated identifier.

With reference to the first aspect, or any one of the first to seventh possible implementation manners of the first aspect, in a twelfth possible implementation manner, the first core network control plane node device identifies that the UE is Type 1 UE, including:

The first core network control plane node device receives a notification message from the base station, where the notification message is used to indicate that the UE is a first type UE;

The first core network control plane node device determines that the UE is the first type UE according to the notification message.

Combining the first aspect, or any one of the first to seventh possible implementations of the first aspect In a thirteenth possible implementation manner, the first core network control plane node device identifying the UE as a first type UE includes:

If the UE is in an idle state, when the first core network control plane node device recognizes that the number of times the UE triggers a mobility management area update procedure within a preset time period is greater than a preset value, determine that the UE is Type 1 UE; or,

If the UE is in an idle state, when the first core network control plane node device recognizes that the mobility management area update request message comes from a base station of a second communication network close to the first communication network, search in a setting mode calling the UE for a set number of times, if the first core network control plane node device recognizes that the set number of paging response messages sent by the UE come from different base stations and the different base stations are all close to the If the base station of the second communication network of the first communication network determines that the UE is a first type UE; or,

If the UE is in the connected state, when the first core network control plane node device recognizes that the base station serving the UE has changed times greater than a preset value within a preset time period, determine that the UE is of the first type UE; or

If the UE is in the connected state, when the first core network control plane node device recognizes that the set number of base stations serving the UE are different and the different base stations are all the second base stations close to the first communication network, The base station of the communication network determines that the UE is the first type UE.

In combination with any one of the eighth to the thirteenth possible implementation manners of the first aspect, in the fourteenth possible implementation manner, the method further includes:

After the first core network control plane node device determines that the UE is a first type UE, the first core network control plane node device stores the identity information that the UE is a first type UE in the UE in the corresponding user context.

With reference to the fourteenth possible implementation manner of the first aspect, in a fifteenth possible implementation manner, the method further includes:

If the first core network control plane node device determines that the UE is not the first type UE according to the original mobility management area code, the first core network control plane node device determines that the UE is not the first type UE The identity information of the UE is stored in the user context corresponding to the UE.

With reference to any possible implementation manner in the seventh possible implementation manner and the eighth possible implementation manner of the first aspect, in a sixteenth possible implementation manner, the mobility management area includes a tracking area TA , a routing area RA, a location area LA or a cell.

With reference to the first aspect, or any one of the first to sixteenth possible implementation manners of the first aspect, in a seventeenth possible implementation manner, the high-speed moving tool includes a high-speed railway train, a subway, or a light rail.

With reference to the first aspect, or any one of the first to seventeenth possible implementation manners of the first aspect, in an eighteenth possible implementation manner, the first core network control plane node device includes a mobility management entity MME, or general packet radio service GPRS service support node SGSN, or mobile switching center MSC.

In a second aspect, an embodiment of the present invention provides a communication method, the method including:

The base station of the second communication network serving the user equipment UE receives the indication information sent by the core network control plane node device, and the indication information is that the core network control plane node device determines that the UE is a first type UE and sends the indication information to the base station sent, the indication information is used to indicate that the UE is a first type UE;

The base station sends a first message to the UE according to the indication information, the first message carries redirection information, and the redirection information includes frequency point information corresponding to the first communication network, so that the the UE is redirected back to said first communication network;

Wherein, the first type of UE is a UE used by a user riding a high-speed mobile tool, and the first communication network includes a high-speed mobile tool communication network.

In a first possible implementation manner of the second aspect, the first communication network and the second communication network are different public land mobile networks (PLMNs), or the first communication network and the second communication network The communication network is the same PLMN, but uses different access frequency points.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner, the first message includes a radio resource control RRC connection release message.

With reference to the second aspect, or any one of the first to second possible implementation manners of the second aspect, in the third possible implementation manner, the second The base station of the communication network receives the indication information sent by the core network control plane node device, including:

The base station receives a downlink non-access stratum NAS direct transmission message sent by a core network control plane node device, where the downlink NAS direct transmission message carries the indication information.

With reference to the second aspect, or any one of the first to second possible implementation manners of the second aspect, in a fourth possible implementation manner, the base station of the second communication network serving the user equipment UE receives the core network The instruction information sent by the control plane node device includes:

The base station receives a context release command message sent by a core network control plane node device, where the context release command message carries the indication information.

With reference to the second aspect, or any one of the first to second possible implementation manners of the second aspect, in a fifth possible implementation manner, the base station of the second communication network serving the user equipment UE receives the core network The instruction information sent by the control plane node device includes:

The base station receives an initial context establishment request message sent by a core network control plane node device, where the initial context establishment request message carries the indication information;

Alternatively, the base station receives a context modification request message sent by a core network control plane node device, where the context modification request message carries the indication information.

In a third aspect, an embodiment of the present invention provides a communication method, the method including:

The base station of the second communication network serving the user equipment UE receives the first radio access system/frequency point priority user file identifier SPID value sent by the core network control plane node device, and the first SPID value is the core network control plane sent by the node device to the base station after determining that the UE is a first-type UE;

The base station sends first frequency point priority information to the UE according to the first SPID value, and the first frequency point priority information is used to instruct the UE to preferentially select a frequency point of the first communication network for stay

Wherein, the first type of UE is a UE used by a user riding a high-speed mobile tool, and the first communication network includes a high-speed mobile tool communication network.

In a first possible implementation manner of the third aspect, the first communication network and the second communication network are different public land mobile networks (PLMNs), or the first communication network and the second communication network The communication network is the same PLMN, but uses different access frequencies point.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in the second possible implementation manner, the base station of the second communication network serving the user equipment UE receives the information sent by the core network control plane node device The first SPID value, including:

The base station receives a downlink non-access stratum NAS direct transmission message sent by a core network control plane node device, where the downlink NAS direct transmission message carries the first SPID value.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in the third possible implementation manner, the base station of the second communication network serving the user equipment UE receives the information sent by the core network control plane node device The first SPID value, including:

The base station receives an initial context establishment request message sent by a core network control plane node device, where the initial context establishment request message carries the first SPID value;

Alternatively, the base station receives a context modification request message sent by a core network control plane node device, where the context modification request message carries the first SPID value.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a fourth possible implementation manner, the base station of the second communication network serving the user equipment UE receives the information sent by the core network control plane node device The first SPID value, including:

The base station receives a context release command message sent by a core network control plane node device, where the context release command message carries the first SPID value.

With reference to the third aspect, or any one of the first to fourth possible implementation manners of the third aspect, in a fifth possible implementation manner, the base station sends the first SPID value to the UE according to the first SPID value. Frequency priority information, including:

The base station sends a radio resource control RRC connection release message to the UE, and the RRC connection release message carries the first frequency point priority information.

With reference to the third aspect, or any one of the first to fifth possible implementation manners of the third aspect, in a sixth possible implementation manner, the first frequency point priority information further includes a timer value, and the The timer value is used to indicate the valid duration of the frequency point priority information.

In a fourth aspect, an embodiment of the present invention provides a first core network control plane node device, including:

a processor, configured to, when the user equipment UE accesses the second communication network, identify the UE as a first type UE; and

a transmitter, configured to send indication information to a base station serving the UE, where the indication information is used to indicate that the UE is a UE of the first type, so that the base station connects the UE to a first communication network;

Wherein, the first type of UE is a UE used by a user riding a high-speed mobile tool, and the first communication network includes a high-speed mobile tool communication network.

In a first possible implementation manner of the fourth aspect, the first communication network and the second communication network are different public land mobile networks (PLMNs), or the first communication network and the second communication network The communication network is the same PLMN, but uses different access frequency points.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the transmitter sends the indication information to the base station, so that when the base station receives the After receiving the indication information, redirect the UE to the first communication network.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a third possible implementation manner, the processor is further configured to assign a first wireless access system/frequency point priority to the UE The user file identifies a SPID value, and the indication information is the first SPID value;

The transmitter is configured to send the first SPID value to the base station, where the first SPID value is used to instruct the base station to send first frequency point priority information to the UE, where the first frequency point The priority information is used to instruct the UE to preferentially select a frequency point of the first communication network to camp on.

With reference to the fourth aspect, or any one of the first to third possible implementation manners of the fourth aspect, in a fourth possible implementation manner, the transmitter is configured to send a context release instruction message to the base station, the The context release command message carries the indication information.

With reference to the fourth aspect, or any one of the first to third possible implementation manners of the fourth aspect, in a fifth possible implementation manner, the transmitter is configured to send an initial context establishment request message to the base station, so The initial context establishment request message carries the instruction display information;

Or, the transmitter is configured to send a context modification request message to the base station, where the context modification request message carries the indication information.

With reference to the fourth aspect, or any one of the first to third possible implementation manners of the fourth aspect, in a sixth possible implementation manner, the transmitter is configured to send a downlink non-access stratum NAS direct message to the base station. A message is transmitted, and the downlink NAS direct transmission message carries the indication information.

In combination with the fourth aspect, or any one of the first to third possible implementations of the fourth aspect, the seventh possible implementation also includes:

The first receiver is configured to receive the mobility management area update request message sent by the UE.

With reference to the seventh possible implementation of the fourth aspect, in an eighth possible implementation, the mobility management area update request message carries the original mobility management area code;

When the original mobility management area code is the mobility management area code of the first communication network, the processor is configured to determine that the UE is a first type UE according to the original mobility management area code.

With reference to the fourth aspect, or any one of the first to seventh possible implementation manners of the fourth aspect, in a ninth possible implementation manner, the transmitter is further configured to send to the second core network control plane node device User context request message, the first core network control plane node device further includes:

The second receiver is configured to receive a user context response message sent by the second core network control plane node device, where the user context response message includes the indication information;

The processor is configured to determine, according to the indication information, that the UE is a first type UE.

With reference to the fourth aspect, or any one of the first to seventh possible implementation manners of the fourth aspect, in a tenth possible implementation manner, the first core network control plane node device is the first communication network share the deployed core network control plane node device with the second communication network,

The processor is further configured to identify the UE as a first-type UE before the UE accesses the second communication network, and record the relationship between the identity of the UE and the first-type UE mapping relationship;

The first core network control plane node device further includes:

a third receiver, configured to receive the identity reported by the UE;

The processor is configured to determine, according to the identity and the mapping relationship, that the UE is a first-type UE.

In combination with the fourth aspect, or any one of the first to seventh possible implementation manners of the fourth aspect, the eleventh possible implementation manner further includes:

A fourth receiver, configured to receive the dedicated identifier reported by the UE, where the dedicated identifier is delivered to the UE by the control plane node device of the second core network before the UE accesses the second communication network , the dedicated identifier is used to indicate that the UE is a first type UE;

The processor is configured to determine, according to the dedicated identifier, that the UE is a first type UE.

In combination with the fourth aspect, or any one of the first to seventh possible implementations of the fourth aspect, the twelfth possible implementation also includes:

A fifth receiver, configured to receive a notification message from the base station, where the notification message is used to indicate that the UE is a first type UE;

The processor is configured to determine, according to the notification message, that the UE is a first type UE.

In combination with the fourth aspect, or any one of the first to seventh possible implementations of the fourth aspect, in the thirteenth possible implementation,

If the UE is in the idle state, when the processor recognizes that the number of times the UE triggers a mobility management area update procedure within a preset time period is greater than a preset value, determine that the UE is a first type UE; or ,

If the UE is in an idle state, when the processor recognizes that a mobility management area update request message comes from a base station of a second communication network close to the first communication network, paging through the transmitter in a set manner The number of times set by the UE, if the processor recognizes that the set number of paging response messages sent by the UE come from different base stations and the different base stations are all the first stations close to the first communication network The base station of the second communication network determines that the UE is the first type UE; or,

If the UE is in a connected state, when the processor identifies a base station serving the UE If the number of conversions within a preset time period is greater than a preset value, then determine that the UE is a first type UE; or

If the UE is in a connected state, when the processor recognizes that a set number of base stations serving the UE are different and the different base stations are all base stations of a second communication network close to the first communication network, then Determine that the UE is a first type UE.

With reference to any one of the eighth to the thirteenth possible implementation manners of the fourth aspect, in the fourteenth possible implementation manner, after the processor determines that the UE is a first-type UE, the processing The device is further configured to save the identity information that the UE is the first type of UE in the user context corresponding to the UE.

With reference to the fourteenth possible implementation manner of the fourth aspect, in a fifteenth possible implementation manner, if the processor determines that the UE is not a UE of the first type according to the original mobility management area code, the The processor is further configured to save the identity information that the UE is not the first type of UE in the user context corresponding to the UE.

With reference to any possible implementation manner in the seventh possible implementation manner and the eighth possible implementation manner of the fourth aspect, in a sixteenth possible implementation manner, the mobility management area includes a tracking area TA , a routing area RA, a location area LA or a cell.

With reference to the fourth aspect, or any one of the first to sixteenth possible implementation manners of the fourth aspect, in a seventeenth possible implementation manner, the high-speed moving means include high-speed railway trains, subways, or light rails.

With reference to the fourth aspect, or any one of the first to seventeenth possible implementation manners of the fourth aspect, in an eighteenth possible implementation manner, the first core network control plane node device includes a mobility management entity MME, or general packet radio service GPRS service support node SGSN, or mobile switching center MSC.

In a fifth aspect, an embodiment of the present invention provides a base station of a second communication network serving a user equipment UE, including:

a receiver, configured to receive indication information sent by a core network control plane node device, where the indication information is sent to the base station after the core network control plane node device determines that the UE is a first type UE, and the indication The information is used to indicate that the UE is a first type UE; and

a sender, configured to send a first message to the UE according to the indication information, the The first message carries redirection information, where the redirection information includes frequency point information corresponding to the first communication network, so that the UE is redirected back to the first communication network;

Wherein, the first type of UE is a UE used by a user riding a high-speed mobile tool, and the first communication network includes a high-speed mobile tool communication network.

In a first possible implementation manner of the fifth aspect, the first communication network and the second communication network are different public land mobile networks (PLMNs), or the first communication network and the second communication network The communication network is the same PLMN, but uses different access frequency points.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the first message includes a radio resource control RRC connection release message.

In combination with the fifth aspect, or the first or second possible implementation of the fifth aspect, in the third possible implementation,

The receiver is configured to receive a downlink non-access layer NAS direct transmission message sent by a core network control plane node device, where the downlink NAS direct transmission message carries the indication information;

Alternatively, the receiver is configured to receive a context release instruction message sent by a core network control plane node device, where the context release instruction message carries the indication information;

Alternatively, the receiver is configured to receive an initial context establishment request message sent by a core network control plane node device, where the initial context establishment request message carries the indication information;

Alternatively, the receiver is configured to receive a context modification request message sent by a core network control plane node device, where the context modification request message carries the indication information.

In a sixth aspect, an embodiment of the present invention provides a base station of a second communication network serving a user equipment UE, including:

The receiver is configured to receive the first wireless access system/frequency point priority user file identifier SPID value sent by the core network control plane node device, where the first SPID value determines the UE by the core network control plane node device sent to the base station after being the UE of the first type; and

a transmitter, configured to send first frequency point priority information to the UE according to the first SPID value, where the first frequency point priority information is used to instruct the UE to preferentially select the first frequency point priority information; A frequency point of the communication network is camped on;

Wherein, the first type of UE is a UE used by a user riding a high-speed mobile tool, and the first communication network includes a high-speed mobile tool communication network.

In a first possible implementation manner of the sixth aspect, the first communication network and the second communication network are different public land mobile networks (PLMNs), or the first communication network and the second communication network The communication network is the same PLMN, but uses different access frequency points.

In combination with the sixth aspect, or the first possible implementation of the sixth aspect, in the second possible implementation,

The receiver is configured to receive a downlink NAS direct transmission message sent by a core network control plane node device, where the downlink NAS direct transmission message carries the first SPID value;

Alternatively, the receiver is configured to receive a context release command message sent by a core network control plane node device, where the context release command message carries the first SPID value;

Alternatively, the receiver is configured to receive an initial context establishment request message sent by a core network control plane node device, where the initial context establishment request message carries the first SPID value;

Alternatively, the receiver is configured to receive a context modification request message sent by a core network control plane node device, where the context modification request message carries the first SPID value.

With reference to the sixth aspect, or the first or second possible implementation manner of the sixth aspect, in a third possible implementation manner, the transmitter is configured to send a radio resource control RRC connection release message to the UE, the The RRC connection release message carries the first frequency point priority information.

With reference to the sixth aspect, or any one of the first to third possible implementation manners of the sixth aspect, in a fourth possible implementation manner, the first frequency point priority information further includes a timer value, and the The timer value is used to indicate the valid duration of the frequency point priority information.

In the seventh aspect, the embodiment of the present invention provides a communication system, including the first core network control plane node device of the fourth aspect or any one of the first to eighteenth possible implementations of the fourth aspect, and the fifth aspect Or the base station of the second communication network serving the user equipment UE in any one of the first to third possible implementation manners of the fifth aspect.

In an eighth aspect, an embodiment of the present invention provides a communication system, including the fourth aspect or the first core network control plane node device in any one of the first to eighteenth possible implementations of the fourth aspect, and the sixth aspect Or the base station of the second communication network serving the user equipment UE in any one possible implementation manners of the first to the fourth aspect of the sixth aspect.

In the ninth aspect, the embodiment of the present invention further provides a base station, configured to measure the speed of the UE when/after the UE accesses the second communication network; if the speed of the UE is higher than a preset value, The base station sends a notification message to the core network control plane node device, where the notification message is used to indicate that the UE is a first type UE, so that the core network control plane node device determines that the UE is a first type UE UE.

According to the communication method, core network control plane node device, base station, and communication system provided by the embodiments of the present invention, after the core network control plane node device determines that the UE is a first-type UE, it sends indication information to the base station serving the UE, so that The base station connects the UE to the private network of the first communication network. Therefore, even if the first type of UE (for example, on the way) accidentally accesses the public network due to abnormal reasons, it can quickly return to the high-speed rail private network, which improves the user experience of the first type of UE.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Figure 1A shows a schematic diagram of the deployment of the high-speed rail private network and the public network in the area of the high-speed rail station area;

Figure 1B shows a schematic diagram of the deployment of the high-speed rail private network and the public network in the high-speed rail train track area;

FIG. 2 is a flowchart of a communication method according to an embodiment of the present invention;

FIG. 3A is a schematic diagram of a communication method according to an embodiment of the present invention;

FIG. 3B is another schematic diagram of a communication method according to another embodiment of the present invention;

FIG. 4 is a block diagram of a core network control plane node device according to an embodiment of the present invention;

FIG. 5A is a block diagram of a base station according to an embodiment of the present invention;

FIG. 5B is a block diagram of a base station according to another embodiment of the present invention;

Figure 6A is a block diagram of a base station according to one embodiment of the present invention; and

FIG. 6B is a block diagram of a base station according to an embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention is used to control the UE to access the high-speed mobile tool communication network, so that the UE belonging to the user riding the high-speed mobile tool communication network can return to the public network even if it leaves the high-speed mobile tool communication network due to abnormal reasons and accesses the public network. to high-speed mobile tool communication networks. Among them, the high-speed mobile tool communication network refers to a dedicated network that provides communication services for users riding high-speed mobile tools. The private network and the public network can be different PLMNs; or, they can also be the division of two types of network areas under the same PLMN , the two can overlap in space, but use different access frequency points (such as 2500Hz and 2600Hz of China Mobile). For ease of description, the high-speed mobile tool communication network is also referred to as the first communication network, and the public network is also referred to as the second communication network. In addition, UEs used by users who take high-speed mobile tools (such as high-speed rail, light rail, and subway) are referred to as first-type UEs for short, and UEs used by users who do not take high-speed mobile tools are called non-first-type UEs.

The first communication network applicable to the present invention includes but is not limited to Long Term Evolution (English: Long Term Evolution, referred to as: LTE) network, Global System for Mobile Communication (English: Global System of Mobile communication, referred to as: GSM), or Universal Mobile Communication System (English: Universal Mobile Telecommunications System, referred to as: UMTS) network. In any of the above network scenarios, the communication system includes at least a core network control plane node device, a UE, and a base station. Under the LTE network, the core network control plane node equipment includes but not limited to Mobility Management Entity (English: Mobility Management Entity, referred to as: MME), and the base station includes but not limited to the evolved network base station (English: E-UTRAN NodeB, referred to as: eNodeB). Under the GSM network or UMTS network, the core network control plane node equipment includes but not limited to General Packet Radio Service (English: General Packet Radio Service, referred to as: GPRS) business support node (English: Serving GPRS Support Node, referred to as: SGSN) or Mobile Switching Center (English: Mobile Switching Center, referred to as: MSC), base station includes but not limited to base station controller (English: base station controller, referred to as: BSC) or radio network controller (English: radio network controller, referred to as: RNC) . In the present invention, the first communication network and the second communication network deploy different access network devices (for example, eNodeB).

In the following, a high-speed mobile vehicle is a high-speed rail, and the first communication network is an LTE high-speed rail private network as an example for description. However, the present invention is not limited thereto. High-speed mobile means include but not limited to high-speed rail, maglev, subway, and the present invention is also applicable to GSM network or UMTS network.

For example, the scenarios covered by the high-speed rail private network can be divided into two types: high-speed rail station and high-speed rail on the way. The high-speed railway station is covered by private network communities, and the high-speed rail is also covered by cascaded private network communities during its journey. In addition, the high-speed rail station and the traveling route are at least partially covered by public network communities near the high-speed rail private network.

Fig. 2 is a flowchart of a communication method according to a first embodiment of the present invention. Figure 2 is executed by a core network control plane node device (such as MME). The MME can be a private network MME independently deployed by the first communication network, or the MME can also be a shared MME deployed by the first communication network and the second communication network, that is, the high-speed mobile tool communication network and the public network use the same MME. When the MME is shared by the high-speed mobile tool communication network and the public network, the shared MME is used to simultaneously provide control plane management services for the first type UE and the non-first type UE.

In the embodiment of the present invention, the first type of UE can access the high-speed rail private network in different areas. For example, the UE can access the high-speed rail private network in the train station area, or the UE can access the high-speed rail private network in the track area. For example, when a user enters the area of a high-speed rail station, such as waiting in the waiting room or walking to the platform, most of the UEs will connect to the high-speed rail private network when they are powered on because they enter the coverage area of the high-speed rail private network signal.

There may be multiple ways for a UE to access the private high-speed rail network. For example, for a UE in an idle state, because the UE enters a private high-speed rail network cell from a public network cell, a cell reselection process is triggered to access the private high-speed rail network. For a UE in the connected state, it can access the high-speed rail private network through the LTE handover process. For UEs that are turned on after entering the train station area (such as waiting room, aisle, platform, etc.), they can connect to the high-speed rail private network by initiating an attach process under the private network cell in the train station area.

After the UE accesses the high-speed rail private network in the station area, it may leave the high-speed rail private network due to abnormal reasons (such as terminal abnormality, poor private network coverage, etc.) and access the public network around the private network. For example, when a high-speed rail train runs into an area with poor signal quality or no private network coverage, the UE will search for surrounding public network frequency points and select a suitable public network cell to camp on.

As shown in Figure 2, the communication methods include:

S200. After the UE accesses the second communication network, the core network control plane node device identifies the UE as the first type UE.

For example, the MME identifies the UE accessing the public network as the first type UE. How the MME specifically determines whether the UE is the first-type UE will be further described with reference to FIG. 3A and FIG. 3B .

S202. The core network control plane node device sends indication information to the base station serving the UE, where the indication information is used to indicate that the UE is a first type UE, so that the base station connects the UE to a first communication network.

For example, the core network control plane node device sends the indication information to the base station, so that the base station redirects the UE to the first communication network after receiving the indication information. How the base station redirects the UE to the first communication network according to the indication information will be further described with reference to FIG. 3B .

Or, before step S202, the method further includes:

S201, after the core network control plane node device (for example, MME) determines that the UE is the first type UE, allocate the first radio access system/frequency priority subscriber profile identification (English Subscriber Profile ID for RAT/Frequency Priority) to the UE , referred to as: SPID) value. The above indication information is the first SPID value.

Correspondingly, step S202 specifically includes:

The core network control plane node device sends the first SPID value to the base station, and the first SPID value is used to instruct the base station to send a first frequency point priority information to the UE. information, wherein the first frequency point priority information is used to instruct the UE to preferentially select a frequency point of the first communication network to camp on. How the MME allocates the SPID value to the UE and how the base station sends the frequency point priority information according to the received SPID value will be further described with reference to FIG. 3A .

Through the solution of the present invention, after the core network control plane node device determines that the UE is the first type UE, it sends indication information to the base station serving the UE, so that the base station connects the UE to the private network of the first communication network. Therefore, even if the first type of UE (for example, on the way) accidentally accesses the public network due to abnormal reasons, it can quickly return to the high-speed rail private network, which improves the user experience of the first type of UE.

Fig. 3A is a signaling interaction diagram of a communication method according to an embodiment of the present invention. The method in the scenario of Fig. 3A is implemented by interaction between UE 310, MME 320 and public network eNodeB 330. Wherein, UE 310 is the first type UE.

S301, the UE 310 accesses the public network due to an abnormal reason.

S302, the MME 320 recognizes that the UE 310 is a first-type UE, and assigns a first SPID value to the UE 310 accordingly.

For example, the MME 320 may identify the UE 310 as the first type UE in any of the following manners.

(1) The MME 320 can be a core network control plane node MME independently deployed for the high-speed rail private network, or an MME shared with the existing public network. In addition, since private network base stations independent of public network base stations are set up in private network cells, and in general, it is necessary to divide private network TAs that are different from public network tracking areas (English: Tracking Area, TA for short), for example, private network TAs include A dedicated tracking area code (English: Tracking Area Code, referred to as: TAC). Therefore, the TAC can be used to distinguish whether the TA is a private network TA or a public network TA.

In addition, since private network TAs and public network TAs belong to different types of TAs, they are generally planned to belong to different TA lists (TA lists). When the UE 310 accesses the public network TA from the original private network TA, a TAU process will be initiated. For example, the UE 310 sends a TAU request message to the core network control plane node device MME320, wherein the TAU request message carries an original TAC (old TAC) cell, and the original TAC cell corresponds to the private network TAC.

Therefore, step S302 may include:

S302a. The core network control plane node device receives the mobility management area update sent by the UE. A new request message, such as a TAU request message. The mobility management area update request message carries the original mobility management area code.

When the original mobility management area code is the mobility management area code of the first communication network, the first core network control plane node device according to the original mobility management area code (for example, old TAC information element ), determining that the UE is a first type UE.

It should be noted that, for some non-first-type UEs (such as UEs used by users who do not take the high-speed rail) to access the high-speed rail private network, the existing technology may use handover to move such UEs out of the high-speed rail private network. network, so as to prevent a large number of ordinary users from occupying the resources of the high-speed rail private network for a long time. Although the old TAC information element of this type of UE also corresponds to the private network TAC, for the UE that initiates the TAU process during the handover process, even if the old TAC information element reported by the UE corresponds to the private network TAC, the MME may not judge it as the first A type of UE.

(2) When UE310 resides on the private network (i.e. before accessing the high-speed rail public network), the private network/shared second MME first recognizes that the UE is the first type UE after UE310 accesses the private network, and sends the identity information Stored in the user context. The public network/shared first MME may identify the UE as the first type UE through notification from the private network/shared second MME.

Therefore, step S302 may include:

S302b, the first core network control plane node device (for example, the public network/shared MME 320) sends a user context request message to the second core network control plane node device, for example, when the high-speed rail private network and the public network independently deploy the core network control In the case of the second core network control plane node device, the second core network control plane node device may be a core network control device of the public network. When the high-speed rail private network and the public network share the deployment of core network control equipment, the second core network control plane node device is the core network equipment shared by the private network and the public network;

The first core network control plane node device receives a user context response message sent by the second core network control plane node device, where the user context response message includes the indication information;

The first core network control plane node device determines that the UE is a first type UE according to the indication information.

(3) When the private network and the public network core network control plane node MME are shared and deployed, the shared MME has identified that the UE is the first type when the UE 310 resides in the private network (that is, before accessing the public network). UE, and record the mapping between the UE identity and the first type UE shooting relationship. The identity of the UE includes, but is not limited to, International Mobile Subscriber Identity (English: international mobile subscriber identity, abbreviated: IMSI) or a globally unique temporary identity (English: globally unique temporary identity; abbreviated: GUTI). When the UE 310 leaves the private network and accesses the public network, the MME may determine whether the UE is a first-type UE by searching for an internally recorded mapping relationship through the identity (eg, IMSI or GUTI) reported by the UE.

Therefore, step S302 may include:

S302c. The first core network control plane node device receives the identity identifier reported by the UE, and determines that the UE is a first-type UE according to the identity identifier and the mapping relationship.

(4) When the UE 310 resides in the private network (that is, before accessing the public network), the UE 310 has been identified as the first type of UE by the private network MME or the shared MME, and the private network MME or the shared MME issues a dedicated logo. For example, the dedicated identifier may be a dedicated GUTI, and a specific private network MME or shared MME may issue a dedicated GUTI to the UE 310 through a GUTI reallocation message, and the dedicated GUTI includes a dedicated mobility management entity code (English: mobility management entity code; Abbreviation: MMEC).

Therefore, step S302 may include:

S302d. The core network control plane node device receives the dedicated identifier (for example, GUTI including a dedicated MMEC) reported by the UE, where the dedicated identifier is provided by the second core before the UE accesses the second communication network Issued by the network control plane node device to the UE, the dedicated identifier is used to indicate that the UE is a first-type UE. For example, the second core network control plane node device may be a core network control device of the public network. When the high-speed rail private network and the public network share the deployment of core network control equipment, the second core network control plane node device is the first core network control plane node device;

The core network control plane node device determines that the UE is a first-type UE according to the dedicated identifier.

(5) The core network control plane node MME 320 can also learn that the UE 310 is a first-type UE through a notification from the public network base station 330. For example, the public network base station measures the speed of the UE when/after the UE accesses the public network (for example, the public network base station uses the Doppler frequency offset algorithm to measure the speed of the UE), if the speed of the UE is higher than preset value, the public network base station determines that the UE is a first-type UE, and sends notification information to the MME to notify the MME of the The UE is a first type UE.

Therefore, step S302 may include:

S302e. The core network control plane node device receives a notification message from the base station, where the notification message is used to indicate that the UE is a first type UE;

The first core network control plane node device determines that the UE is the first type UE according to the notification message.

It should be noted that the determination by the base station of the public network that the UE is the first-type UE according to the speed measurement of the UE can also be used in other scenarios or purposes, and is not limited to the description in this embodiment.

(6) The core network control plane node MME 320 can also identify that the UE is Type 1 UE.

Therefore, specifically, step S302 may include any of the following:

S302f1, for an idle state UE, if the MME 320 recognizes that the number of times the UE 310 triggers a mobility management area update procedure (for example, a TAU procedure) within a preset period of time is greater than a preset value (for example, the preset value is greater than 1), that is , the TA where the UE is located has changed multiple times, then the MME 320 determines that the UE is a first-type UE.

S302f2, for the UE in the idle state, when the UE initiates the mobility management area update procedure (for example, the TAU procedure), if the MME 320 recognizes that the mobility management area update request message (for example, the TAU request message) comes from a network close to the high-speed rail private network The public network eNodeB then pages the UE for a set number of times in a set manner. If the MME 320 recognizes that the set number of paging response messages sent by the UE come from different eNodeBs and these different eNodeBs are public network eNodeBs close to the private high-speed rail network, then the MME 320 determines that the UE is the first type UE. Wherein, the relevant eNodeB information is configured in the MME 320, which is used to determine whether an eNodeB is a public network eNodeB close to the high-speed rail private network. The way of paging the UE (such as setting the time interval) can refer to the distance between eNodeBs in the public network and the speed of the high-speed rail.

S302f3. For the UE in the connected state, if the MME 320 recognizes that the number of changes of the base station serving the UE within a preset time period is greater than a preset value, determine that the UE is a first type UE.

S302f4, for connected UEs, if the MME 320 recognizes that the set number of eNodeBs serving the UEs are different, and these different eNodeBs are all public network eNodeBs close to the high-speed rail private network, then the MME 320 determines that the UE is the first type UE. Among them, the configuration in MME 320 The related eNodeB information is used to determine whether an eNodeB is a public network eNodeB close to the high-speed rail private network. After the MME 320 recognizes that the UE 310 is a first-type UE by any of the above methods, it assigns the first SPID value to the UE. For example, MME 320 assigns SPID=5 to the UE.

S303. The MME 320 sends the first SPID value to the public network eNodeB 330. Correspondingly, eNodeB 330 receives the first SPID value sent by MME 320.

For example, the MME 320 sends a downlink non-access stratum (English: non-access stratum, NAS for short) direct transmission message to the public network eNodeB 330, and the downlink NAS direct transmission message carries the first SPID value. If the MME 320 receives the mobility management area update request message (such as a TAU request message) sent by the UE 310, the downlink NAS direct transmission message may also include any of the following: a mobility management area update acceptance message or a mobility Management zone update rejection message.

Taking the LTE network as an example, after the UE 310 sends a TAU request message to the MME 320, the MME 320 can first accept the TAU request, encapsulate the first SPID value and the TAU accept (accept) message in a downlink NAS direct transmission message and send it to the serving The public network eNodeB 330 for the UE of the first type. The public network eNodeB 330 parses the received downlink NAS direct transmission message to obtain the first SPID value and the TAU accept message, and the public network eNodeB 330 can forward the parsed TAU accept message to the UE 310 or directly discard it. Alternatively, the MME 320 may reject the TAU request first, and encapsulate the first SPID value and a TAU rejection (reject) message carrying a certain cause value in a downlink NAS direct transmission message and send it to the public network eNodeB 330 serving the UE. For example, the reason value carried in the TAU reject message may specifically be Tracking area not allowed (Tracking area not allowed) or No suitable cells in tracking area (No suitable cells in tracking area), etc. The cause value is used to indicate that the TAU procedure initiated by the UE of the first type is not allowed, so as to prevent the UE from initiating a TAU request to the public network TA again. The public network eNodeB 330 parses the received downlink NAS direct transmission message to obtain the first SPID value and the TAU reject message, and the public network eNodeB 330 can forward the parsed TAU reject message to the UE 310 or directly discard it.

Or, optionally, for an LTE network, S303 may include:

The MME 320 sends an initial context setup request message (initial context setup request) to the public network eNodeB 330, and the initial context setup request message The message is used to instruct the eNodeB 330 to establish the context of the user, and the initial context establishment request message carries the first SPID value; or, the MME 320 sends a context modification request message (UE context modification request) to the public network eNodeB 330 , the context modification request message is used to provide the eNodeB 330 with change information of the user context, where the context modification request message carries the first SPID value.

Or, optionally, S303 may include:

The core network control plane node device MME 320 sends a context release command message (for example, an S1 interface context release command message) to the public network base station eNodeB 330, and the context release command message carries the indication information.

For example, after receiving the TAU process initiated by the UE of the first type, the MME 320 may accept or reject the TAU request initiated by the UE, and after the MME 320 completes the TAU processing and sends the TAU accept/reject message, the MME 320 triggers S1 The interface release procedure is used to release the signaling plane connection of the UE. MME 320 sends an S1 interface context release command (S1UE Context Release Command) message carrying a first SPID value to the public network base station eNodeB 330, and the first SPID value is used to inform the public network base station eNodeB 330 that the UE is Type 1 UE.

S304, the public network base station 330 determines the first frequency point priority information according to the first SPID value, and sends the first frequency point priority information to the UE 310 accordingly. Correspondingly, UE 310 receives the first frequency point priority information. The first frequency point priority information is used to instruct the UE to preferentially select the frequency point of the first communication network to camp on, that is, to preferentially access the high-speed rail private network.

Wherein, eNodeB 330 may be pre-configured with mapping relationships between different SPID values and various frequency point priority information. Therefore, after eNodeB 330 receives the first SPID value, it can obtain the corresponding first frequency point priority information by querying the configured mapping relationship. In the mapping relationship, the private network frequency point to be returned by the first type of UE has the highest priority. For example, a mapping relationship table shown in Table 1 may be maintained in eNodeB 330 .

Table 1

As shown in Table 1, when the SPID is equal to 5, the first frequency point priority information corresponds to priority group 1. In priority group 1, the frequency point of the public network is 800M, the priority level is 6, and the frequency point of the private network is 2600M , the priority level is 7. It is assumed here that the larger the value of the priority level, the higher the priority of the frequency point of the corresponding network, that is, the UE preferentially accesses the frequency point of the network with a large priority level value. Therefore, when the SPID is equal to 5, the first frequency point priority information indicates that the priority of the private network frequency point is higher than that of the public network frequency point.

After the public network base station 330 determines the first frequency point priority information according to the first SPID value, the public network base station 330 sends the first frequency point priority information to the UE 310.

For example, the base station sends a radio resource control RRC connection release (RRC connection release) message to the UE, and the RRC connection release message carries the first frequency point priority information. More specifically, after receiving the first SPID value sent by the core network control plane node, the base station of the public network may immediately end the ongoing service of the first type UE (such as the TAU process), and send a message carrying the first SPID value to the UE. An RRC connection release message of frequency point priority group information, so as to release the signaling connection between the UE and the network side. Or, after receiving the first SPID value, the base station of the public network waits for the UE and the network side to complete the ongoing service before releasing the signaling connection between the UE and the network side, for example, sending a message carrying the first SPID value to the UE. The RRC connection release message of point priority group information.

S306. The UE 310 preferentially selects a frequency point of the first communication network to camp on according to the first frequency point priority information.

When the UE 310 accesses the public network, the user experience declines significantly. Once the user finishes using the service, the UE 310 quickly enters the idle state. When the UE 310 receives the first frequency point priority information sent by the public network base station 330 and enters the idle state, according to the first frequency point priority information, it preferentially selects the frequency point corresponding to the high-speed rail private network to camp on. For example, if UE 310 finds that the frequency point of a certain cell in the high-speed rail private network is suitable for performing the reselection process, it will reselect to this cell.

Taking the LTE high-speed rail private network as an example, under normal circumstances, TAs on the high-speed rail private network and surrounding public network TAs are deployed as different types of TAs, and generally do not belong to the same TA list, so the UE The TAU process will be triggered after reselecting to a high-speed rail private network cell. The UE sends a TAU request message to the high-speed rail private network/shared core network control plane node MME, and the old TAC carried in the TAU request message corresponds to the public network TAC. The high-speed rail private network/shared core network control plane node (MME) accepts the TAU request initiated by the UE and allows the UE to access.

According to the solution of the present invention, when a UE of the first type accesses the public network due to abnormal reasons, the core network control plane node device MME can identify the UE as the UE of the first type in various ways, and assign the first UE to the UE accordingly. SPID value, sending the first SPID value to the public network base station. The public network base station sends the first frequency point priority information to the UE according to the received first SPID value, so that after the UE 310 enters the idle state on the public network, it will immediately select the frequency point of the high-speed mobile tool communication network with high priority for connection. enter. That is to say, even if UE 310 mistakenly connects to the public network due to abnormal reasons, it can quickly reconnect to the high-speed mobile tool communication network according to the priority information of the first frequency point, which improves the user experience of the first type of UE.

Optionally, the first frequency point priority information further includes a timer value. For example, the timer value can be set according to factors such as the distance of the high-speed rail, the time the train travels, and the like. The timer value is used to indicate the valid duration of the first frequency point priority information. For example, the timer value is set to one hour, and after one hour, the priority information of the first frequency point becomes invalid.

Therefore, optionally, before step S306, the method further includes:

S305, the UE 310 judges whether the timer expires. When the timer of the UE 310 does not expire, the UE 310 executes the above step S306. After the timer expires, step S307 is executed. In S307, the UE 310 accesses the network corresponding to the frequency point with higher priority according to other frequency point priority information.

Since the timer for the priority information of the first frequency point is set, after the timer expires, the priority information of the first frequency point becomes invalid. Then, the UE 310 can access the frequency with high priority according to the priority information of other frequency points. point corresponding to the network. Therefore, the priority information of the first frequency point will not affect the procedures and services of the UE 310 on the public network after leaving the train station and entering the urban area.

Optionally, the communication method further includes step S308, and S308 may be performed after S302 or after S303.

S308. After the core network control plane node device determines that the UE is a first-type UE, the core network control plane node device saves the identity information that the UE is a first-type UE in the UE corresponding in the user context. For example, MME 320 may be at the UE The first indication information element is added in the context of . The first indication information element is used to indicate that the UE is a first type UE.

Correspondingly, in step S306, when the high-speed rail private network/shared core network control plane node MME receives the TAU request message sent by the UE, the high-speed rail private network/shared core network control plane node MME also sends The network/shared core network control plane node (MME) acquires the user context of the UE. When the user context includes the above-mentioned first indication information element, the high-speed rail private network/shared core network control plane node MME accepts the TAU request initiated by the UE and allows the UE to access. When the user context does not include the above-mentioned first indication information element, the high-speed rail private network/shared core network control plane node MME rejects the access request of this type of UE, and sends a TAU reject message to this type of UE.

Therefore, the public network/shared MME saves the identity information for the first type UE, for example, adds a corresponding indication information element in the user context. For non-first-type UEs that mistakenly access the high-speed rail private network, because there is no corresponding first indication information element in the user context, the high-speed rail private network/shared core network control plane node MME rejects the access of such UEs. Therefore, it is also avoided that non-first-type UEs access the high-speed rail private network in a non-train station area (track area) and occupy private network resources, thereby further improving the user experience of the first-type UE.

Optionally, the communication method further includes step S309, and the order of performing S308 and S309 is not limited here.

S309. If the core network control plane node device determines that the UE is not a first-type UE according to the original mobility management area code, the core network control plane node device identifies that the UE is not a first-type UE The information is saved in the user context corresponding to the UE. For example, MME 320 may add a second indication information element in the context of the UE. The second indication information element is used to indicate that the UE is not the first type UE.

Correspondingly, in step S306, when the high-speed rail private network/shared core network control plane node MME receives the TAU request message sent by the UE, the high-speed rail private network/shared core network control plane node MME also sends The network/shared core network control plane node (MME) acquires the user context of the UE. When the user context contains the first indication information element used to indicate that the UE is a first-type UE, the high-speed rail private network/shared core network control plane node MME accepts the TAU request initiated by the UE and allows the UE access. When the user context contains a second indication information element used to indicate that the UE is not a first type UE, The high-speed rail private network/shared core network control plane node MME rejects the access request of such UEs and sends a TAU reject message to such UEs.

Similarly, since the public network/shared MME also saves identity information for non-first-type UEs that mistakenly access the high-speed rail private network, the high-speed rail private network/shared core network control plane node MME can reject the access of such UEs accordingly. Therefore, it is also avoided that non-first-type UEs access the high-speed rail private network and occupy private network resources, thereby further improving the user experience of the first-type UEs.

Fig. 3B is a signaling interaction diagram of a communication method according to an embodiment of the present invention. The method in the scenario in Fig. 3B is also realized interactively by UE 310, MME 320 and public network eNodeB 330.

S401, the UE 310 accesses the public network due to an abnormal reason.

S402, the MME 320 identifies the UE 310 as the first type UE. How the MME 320 identifies the UE 310 as the first type of UE can refer to the description of step S302, which will not be repeated here.

S403, after the MME 320 recognizes that the UE 310 is a first-type UE, it sends indication information to the public network base station eNodeB 330, so that when the public network base station eNodeB 330 receives the indication information, it redirects the UE 310 to the first communication network .

Optionally, S403 may specifically include:

The core network control plane node device MME 320 sends a downlink NAS direct transmission message to the public network base station eNodeB 330, and the downlink NAS direct transmission message carries the indication information. If the MME 320 receives the mobility management area update request message (such as a TAU request message) sent by the UE 310, the downlink NAS direct transmission message may also include any of the following: a mobility management area update acceptance message or a mobility Management zone update rejection message. How the MME 320 provides indication information to the public network base station eNodeB 330 through the downlink NAS direct transmission message can refer to the description in S303, and will not be repeated here.

Or, optionally, for an LTE network, S303 may include:

The MME 320 sends an initial context setup request message (initial context setup request) to the public network eNodeB 330, the initial context setup request message is used to instruct the eNodeB 330 to set up the context of the user, and the initial context setup request message carries the the first SPID value; or, the MME 320 sends a context modification request message (UE context modification request) to the public network eNodeB 330, The context modification request message is used to provide the eNodeB 330 with change information of the user context, and the context modification request message carries the first SPID value.

Alternatively, S403 may specifically include:

The core network control plane node device MME 320 sends a context release command message (for example, an S1 interface context release command message) to the public network base station eNodeB 330, and the context release command message carries the indication information. How the MME 320 provides indication information to the public network base station eNodeB 330 through the context release instruction message can refer to the description of how the MME 320 provides the first SPID value to the public network base station eNodeB 330 through the context release instruction message in S303, and will not be repeated here.

S404, the base station sends a first message to the UE according to the indication information, the first message carries redirection information, and the redirection information includes frequency point information corresponding to the first communication network, so that the UE The UE is redirected back to the first communication network. The first message may be a radio resource control RRC connection release (RRC connection release) message.

For example, after receiving the downlink NAS direct transmission message carrying the indication information sent by the MME 320, the public network eNodeB 330 sends the RRC connection release message to the first type UE to trigger a redirection process. Wherein, the RRC connection release message carries redirection information, and the redirection information includes frequency point information corresponding to the first communication network. Optionally, the downlink non-NAS direct transmission message also carries a NAS message, and before the public network eNodeB 330 sends an RRC connection release message to the UE, the public network eNodeB 330 may forward the NAS message to the UE the above UE or discard it directly.

Or, after the public network eNodeB 330 receives the S1 interface context release instruction message carrying the indication information sent by the MME 320, it sends the RRC connection release message to the first type UE to trigger a redirection process. Wherein, the RRC connection release message carries redirection information, and the redirection information includes frequency point information corresponding to the first communication network.

According to the solution of the present invention, when the first type of UE accesses the public network due to abnormal reasons, the core network control plane node device MME can identify the UE as the first type of UE in various ways, and accordingly send the indication information to the public network. Network base station. The base station of the public network sends a first message (for example, an RRC connection release message) to the UE according to the received indication information, the first message carries redirection information, and the redirection information includes information corresponding to the first communication network. frequency point information, so that the UE is redirected back to the first communication network. That is, even if If UE 310 mistakenly connects to the public network due to abnormal reasons, it can also quickly reconnect to the high-speed mobile tool communication network through redirection, which improves the user experience of the first type of UE.

FIG. 4 is a block diagram of a core network control plane node device 400 (eg, MME 320) according to an embodiment of the present invention. The core network control plane node device in FIG. 4 can be used to execute the method steps of the core network control plane node device in FIG. 2 , FIG. 3A or FIG. 3B . The core network control plane node device includes a processor 324 and a transmitter 322 .

The processor 324 is configured to identify the UE as the first type UE after the UE accesses the second communication network. The transmitter 322 is configured to send indication information to a base station serving the UE, where the indication information is used to indicate that the UE is a UE of the first type, so that the base station allows the UE to access the first communication network.

Optionally, the transmitter 322 sends the indication information to the base station, so that the base station redirects the UE to the first communication network after receiving the indication information.

Or, optionally, the processor 324 is further configured to assign a first SPID value to the UE, and the indication information is the first SPID value; the transmitter 322 is configured to send the A first SPID value, where the first SPID value is used to instruct the base station to send first frequency point priority information to the UE, where the first frequency point priority information is used to instruct the UE to preferentially select the camp on the frequency point of the first communication network.

Optionally, the sender 322 is configured to send a context release instruction message to the base station, where the context release instruction message carries the indication information.

Or, optionally, the transmitter 322 is configured to send an initial context establishment request message to the base station, where the initial context establishment request message carries the indication information; or, the transmitter 322 is configured to send an initial context establishment request message to the base station Sending a context modification request message, where the context modification request message carries the indication information.

Or, optionally, the transmitter 322 is configured to send a downlink non-access stratum NAS direct transmission message to the base station, where the downlink NAS direct transmission message carries the indication information.

Optionally, the core network control plane node device further includes: a first receiver, configured to receive the mobility management area update request message sent by the UE.

Optionally, the mobility management area update request message carries the original mobility management area code. When the original mobility management area code is the mobility of the first communication network When the management area is coded, the processor 324 is configured to determine that the UE is a first-type UE according to the original mobility management area code.

Or, optionally, the transmitter 322 is further configured to send a user context request message to the second core network control plane node device, and the first core network control plane node device further includes: a second receiver configured to receive A user context response message sent by the control plane node device of the second core network, where the user context response message includes the indication information; the processor 324 is configured to determine that the UE is a first type UE according to the indication information .

Or, optionally, the core network control plane node device is a core network control plane node device shared and deployed by the first communication network and the second communication network. The processor 324 is further configured to identify the UE as a first-type UE before the UE accesses the second communication network, and record a mapping relationship between the UE's identity and the first-type UE . The core network control plane node device further includes: a third receiver, configured to receive the identity reported by the UE. The processor 324 is configured to determine that the UE is a first-type UE according to the identity and the mapping relationship.

Or, optionally, the core network control plane node device further includes: a fourth receiver, configured to receive the dedicated identifier reported by the UE, where the dedicated identifier is determined by the UE before the UE accesses the second communication network Issued by the second core network control plane node device to the UE, the dedicated identifier is used to indicate that the UE is a first-type UE. The processor 324 is configured to determine, according to the dedicated identifier, that the UE is a first-type UE.

Or, optionally, the core network control plane node device further includes: a fifth receiver, configured to receive a notification message from the base station, where the notification message is used to indicate that the UE is a first-type UE. The processor 324 is configured to determine, according to the notification message, that the UE is a first type UE.

Or, optionally, if the UE is in an idle state, when the processor 324 recognizes that the number of times the UE triggers a mobility management area update procedure within a preset time period is greater than a preset value, determine that the UE is a Type 1 UE; or,

If the UE is in an idle state, when the processor 324 recognizes that the mobility management area update request message comes from a base station of a second communication network close to the first communication network, search for calling the UE for a set number of times, if the processor 324 recognizes that the set number of paging response messages sent by the UE are from different and the different base stations are base stations of a second communication network close to the first communication network, then determining that the UE is a first type UE; or,

If the UE is in the connected state, when the processor 324 recognizes that the number of changes of the base station serving the UE within a preset time period is greater than a preset value, determine that the UE is a first type UE; or

If the UE is in the connected state, when the processor 324 recognizes that the set number of base stations serving the UE are different and the different base stations are all base stations of a second communication network close to the first communication network, Then it is determined that the UE is the first type UE.

Further optionally, after the processor 324 determines that the UE is a first-type UE, the processor is further configured to save the identity information that the UE is a first-type UE in a user corresponding to the UE. in context.

Further optionally, if the processor determines that the UE is not the first-type UE according to the original mobility management area code, the processor 324 is further configured to include the identity information of the UE not being the first-type UE It is saved in the user context corresponding to the UE.

FIG. 5A is a block diagram of a base station 500 according to an embodiment of the present invention. For example, the base station in FIG. 5A can be used to perform the method steps of the base station 330 in FIG. 3A. Base station 330 includes a receiver 332 and a transmitter 334 .

The receiver 332 is configured to receive indication information sent by the core network control plane node device, the indication information is sent to the base station after the core network control plane node device determines that the UE is a first type UE, the indication The information is used to indicate that the UE is a first type UE.

The transmitter 334 is configured to send a first message to the UE according to the indication information, where the first message carries redirection information, and the redirection information includes frequency point information corresponding to the first communication network, so that The UE is redirected back to the first communication network.

Optionally, the first message includes a radio resource control RRC connection release message.

Optionally, the receiver 332 is configured to receive a downlink NAS direct transmission message sent by a core network control plane node device, where the downlink NAS direct transmission message carries the indication information;

Alternatively, the receiver 332 is configured to receive a context release command message sent by a core network control plane node device, where the context release command message carries the indication information;

Alternatively, the receiver 332 is used to receive the initial An initial context establishment request message, where the initial context establishment request message carries the indication information;

Alternatively, the receiver 332 is configured to receive a context modification request message sent by a core network control plane node device, where the context modification request message carries the indication information.

FIG. 5B is a block diagram of a base station 520 according to another embodiment of the present invention. For example, the base station in FIG. 5B may be used to perform the method steps of the base station 330 in FIG. 3B. Base station 330 includes a receiver 336 and a transmitter 338 .

The receiver 336 is configured to receive the first SPID value sent by the core network control plane node device, where the first SPID value is sent to the base station after the core network control plane node device determines that the UE is a first type UE .

The transmitter 338 is configured to send first frequency point priority information to the UE according to the first SPID value, where the first frequency point priority information is used to instruct the UE to preferentially select the frequency point of the first communication network. Click to stay.

Optionally, the receiver 336 is configured to receive a downlink NAS direct transmission message sent by a core network control plane node device, where the downlink NAS direct transmission message carries the first SPID value;

Alternatively, the receiver 336 is configured to receive a context release command message sent by a core network control plane node device, where the context release command message carries the first SPID value;

Alternatively, the receiver 336 is configured to receive an initial context establishment request message sent by a core network control plane node device, where the initial context establishment request message carries the first SPID value;

Alternatively, the receiver 336 is configured to receive a context modification request message sent by a core network control plane node device, where the context modification request message carries the first SPID value.

Optionally, the transmitter 338 is configured to send a radio resource control RRC connection release message to the UE, where the RRC connection release message carries the first frequency point priority information.

Further optionally, the first frequency point priority information further includes a timer value, and the timer value is used to indicate a valid duration of the frequency point priority information.

6A and 6B are block diagrams of communication systems according to embodiments of the present invention, respectively. Wherein, the communication system 600 in FIG. 6A includes the core network control plane node device in FIG. 4 400 and the base station 500 in FIG. 5A. The communication system 620 in FIG. 6B includes the core network control plane node device 400 in FIG. 4 and the base station 520 in FIG. 5B . I won't repeat them here.

The above descriptions are all described by taking the LTE network as an example. However, the present invention is not limited thereto, and the present invention is equally applicable to GSM networks or UMTS networks. When the present invention is applied to GSM network or UMTS network, the core network control devices are SGSN and MSC. The mobility management area in the LTE network is TA, and the mobility management area in the 2G/3G network corresponds to the Routing Area (English: Routing Area, RA for short) and the Location Area (English: Location Area, LA for short). At the same time, the LTE network generates a TAU process due to movement, while the 2G/3G network corresponds to the routing area update (English: Routing Area Update, abbreviated: RAU) process and location area update (English: Location Area Update, abbreviated as LAU) process.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (62)

1. A kind of communication means characterized by comprising

   After user equipment the second communication network of UE access, the first core network control surface node device identifies that the UE is first kind UE；And

   First core network control surface node device sends instruction information to the base station for servicing the UE, and the instruction information is used to indicate the UE as first kind UE, so that the base station is by first communication network of UE access；

   Wherein, the first kind UE is the UE used by a user for taking high-speed mobile tool, and first communication network includes high-speed mobile instrument communications network.
2. According to the method for claim 1, it is characterized in that, first communication network and second communication network are different public land mobile network PLMN respectively, or, first communication network and second communication network are the same PLMN, but use different access frequency points.
3. Method according to claim 1 or 2, which is characterized in that first core network control surface node device sends the instruction information to the base station, so as to which the UE is redirected to first communication network after base station receives the instruction information.
4. Method according to claim 1 or 2, which is characterized in that the method also includes:

   First core network control surface node device is that the UE distributes the first wireless access standard/frequency point priority users file identification SPID value；

   The instruction information is the first SPID value, and first core network control surface node device sends instruction information to the base station for servicing the UE, comprising:

   First core network control surface node device sends the first SPID value to the base station, the first SPID value is used to indicate the base station and sends the first frequency point precedence information to the UE, wherein, the first frequency point precedence information is used to indicate the UE frequency point of first communication network is preferentially selected to be resident.
5. Method according to any one of claims 1 to 4, which is characterized in that first core network control surface node device sends instruction information to the base station for servicing the UE, comprising:

   First core network control surface node device sends context release order message to the base station, and the context release order message carries the instruction information.
6. Method according to any one of claims 1 to 4, which is characterized in that first core network control surface node device sends instruction information to the base station for servicing the UE, comprising:

   First core network control surface node device sends initial context to the base station and establishes request message, and the initial context establishes request message and carries the instruction information；

   Alternatively, first core network control surface node device sends context modification request message to the base station, the context modification request message carries the instruction information.
7. Method according to any one of claims 1 to 4, which is characterized in that first core network control surface node device sends instruction information to the base station for servicing the UE, comprising:

   First core network control surface node device sends downlink Non-Access Stratum NAS direct-sending message to the base station, and the downlink NAS direct-sending message carries the instruction information.
8. Method according to any one of claims 1 to 4, which is characterized in that the method also includes:

   First core network control surface node device receives the mobile management area update request message that the UE is sent.
9. According to the method described in claim 8, it is characterized in that, the mobile management area update request message carries former mobile management regional code；

   Described, the first core network control surface node device identifies that the UE is first kind UE, comprising:

   When the former mobile management regional code is the mobile management regional code of first communication network, first core network control surface node device determines that the UE is first kind UE according to the former mobile management regional code.
10. Method according to any one of claims 1 to 8, which is characterized in that described, the first core network control surface node device identifies that the UE is first kind UE, comprising:

    First core network control surface node device sends user's context request message to the second core network control surface node device；

    First core network control surface node device receives the user's context response message that second core network control surface node device is sent, and the user's context response message includes the instruction information；

    First core network control surface node device determines that the UE is first kind UE according to the instruction information.
11. Method according to any one of claims 1 to 8, which is characterized in that first core network control surface node device is the core network control surface node device of first communication network and the shared deployment of second communication network, the method also includes:

    Before the second communication network described in the UE access, first core network control surface node device identifies that the UE is first kind UE, and records the mapping relations between the identity of the UE and first kind UE；

    Described, the first core network control surface node device identifies that the UE is first kind UE, comprising:

    First core network control surface node device receives the identity that the UE is reported, and determines that the UE is first kind UE according to the identity and the mapping relations.
12. Method according to any one of claims 1 to 8, which is characterized in that described, the first core network control surface node device identifies that the UE is first kind UE, comprising:

    First core network control surface node device receives the specific identity that the UE is reported, the specific identity is to be issued before the second communication network described in the UE access from the second core network control surface node device to the UE, and it is first kind UE that the specific identity, which is used to indicate the UE,；

    First core network control surface node device determines that the UE is first kind UE according to the specific identity.
13. Method according to any one of claims 1 to 8, which is characterized in that described, the first core network control surface node device identifies that the UE is first kind UE, comprising:

    First core network control surface node device receives the notification message of the base station, and it is first kind UE that the notification message, which is used to indicate the UE,；

    First core network control surface node device determines that the UE is first kind UE according to the notification message.
14. Method according to any one of claims 1 to 8, which is characterized in that described, the first core network control surface node device identifies that the UE is first kind UE, comprising:

    If the UE is in Idle state, when first core network control surface node device identifies that the UE triggers the number of mobile management area update process greater than preset value within a preset period of time, it is determined that the UE is first kind UE；Or,

    If the UE is in Idle state, when first core network control surface node device identifies Base station of the mobile management area update request message from the second communication network close to first communication network out, the UE is then paged with setting means and sets number, if first core network control surface node device identifies the message of setting number in the page-response message of the UE transmission from different base stations and the different base station is all the base station of the second communication network close to first communication network, it is determined that the UE is first kind UE；Or,

    If the UE is in connected state, when first core network control surface node device identifies that the number that the base station for servicing the UE converts within a preset period of time is greater than preset value, it is determined that the UE is first kind UE；Or

    If the UE is in connected state, when first core network control surface node device identifies the base station difference for servicing the UE of setting number and the base station that the different base station is all the second communication network close to first communication network, it is determined that the UE is first kind UE.
15. According to any method of claim 9 to 14, which is characterized in that the method also includes:

    After first core network control surface node device determines that the UE is first kind UE, the identity information of UE that the UE is the first kind is stored in the corresponding user's context of the UE by first core network control surface node device.
16. According to the method for claim 15, which is characterized in that the method also includes:

    If it is first kind UE that first core network control surface node device, which according to the former mobile management regional code determines the UE not, the identity information of UE that the UE is not the first kind is stored in the corresponding user's context of the UE by first core network control surface node device.
17. According to any method of claim 8 or 9, which is characterized in that the mobile management region includes tracking area TA, Route Area RA, position area LA or cell.
18. Method according to any one of claims 1 to 17, which is characterized in that the high-speed mobile tool includes high-speed railway train, subway or light rail.
19. Method according to any one of claims 1 to 18, which is characterized in that first core network control surface node device includes mobility management entity MME or general packet radio service Serving GPRS Support Node SGSN or moving exchanging center MSC.
20. A kind of communication means, which is characterized in that the described method includes:

    The base station of the second communication network of served user equipment UE receives the instruction information that core network control surface node device is sent, the instruction information is that the core network control surface node device is determined and sent after the UE is first kind UE to the base station, and it is first kind UE that the instruction information, which is used to indicate the UE,；

    The base station sends first message to the UE according to the instruction information, and the first message carries redirection information, and the redirection information includes frequency point information corresponding with first communication network, so that the UE is redirected back to first communication network；

    Wherein, the first kind UE is the UE used by a user for taking high-speed mobile tool, and first communication network includes high-speed mobile instrument communications network.
21. According to the method for claim 20, it is characterized in that, first communication network and second communication network are different public land mobile network PLMN respectively, or, first communication network and second communication network are the same PLMN, but use different access frequency points.
22. The method according to claim 20 or 21, which is characterized in that the first message includes radio resource control RRC connection release message.
23. According to any method of claim 20 to 22, which is characterized in that described, the base station of the second communication network of served user equipment UE receives the instruction information that core network control surface node device is sent, comprising:

    The base station receives the downlink Non-Access Stratum NAS direct-sending message that core network control surface node device is sent, and the downlink NAS direct-sending message carries the instruction information.
24. According to any method of claim 20 to 22, which is characterized in that described, the base station of the second communication network of served user equipment UE receives the instruction information that core network control surface node device is sent, comprising:

    The base station receives the context release order message that core network control surface node device is sent, and the context release order message carries the instruction information.
25. According to any method of claim 20 to 22, which is characterized in that described, the base station of the second communication network of served user equipment UE receives the instruction information that core network control surface node device is sent, comprising:

    The base station receives the initial context that core network control surface node device is sent and establishes request message, and the initial context establishes request message and carries the instruction information；

    Alternatively, the base station receives the context modification request message that core network control surface node device is sent, the context modification request message carries the instruction information.
26. A kind of communication means, which is characterized in that the described method includes:

    The base station of the second communication network of served user equipment UE receives the first wireless access standard/frequency point priority users file identification SPID value that core network control surface node device is sent, and the first SPID value is that the core network control surface node device is determined and sent after the UE is first kind UE to the base station；

    The base station sends the first frequency point precedence information to the UE according to the first SPID value, and the first frequency point precedence information is used to indicate the UE and the frequency point of first communication network is preferentially selected to be resident；

    Wherein, the first kind UE is the UE used by a user for taking high-speed mobile tool, and first communication network includes high-speed mobile instrument communications network.
27. According to the method for claim 26, it is characterized in that, first communication network and second communication network are different public land mobile network PLMN respectively, or, first communication network and second communication network are the same PLMN, but use different access frequency points.
28. The method according to claim 26 or 27, which is characterized in that described, the base station of the second communication network of served user equipment UE receives the first SPID value that core network control surface node device is sent, comprising:

    The base station receives the downlink Non-Access Stratum NAS direct-sending message that core network control surface node device is sent, and the downlink NAS direct-sending message carries the first SPID value.
29. The method according to claim 26 or 27, which is characterized in that described, the base station of the second communication network of served user equipment UE receives the first SPID value that core network control surface node device is sent, comprising:

    The base station receives the initial context that core network control surface node device is sent and establishes request message, and the initial context establishes request message and carries the first SPID value；

    Alternatively, the base station receives the context modification request message that core network control surface node device is sent, the context modification request message carries the first SPID value.
30. The method according to claim 26 or 27, which is characterized in that described, the base station of the second communication network of served user equipment UE receives core network control surface node device hair The first SPID value sent, comprising:

    The base station receives the context release order message that core network control surface node device is sent, and the context release order message carries the first SPID value.
31. According to any method of claim 26 to 30, which is characterized in that the base station sends the first frequency point precedence information to the UE according to the first SPID value, comprising:

    The base station sends radio resource control RRC connection release message to the UE, carries the first frequency point precedence information in the RRC connection release message.
32. According to any method of claim 26 to 31, which is characterized in that the first frequency point precedence information further includes timer value, and the timer value is used to indicate the frequency point precedence information effective duration.
33. A kind of first core network control surface node device characterized by comprising

    Processor, for after user equipment the second communication network of UE access, identifying that the UE is first kind UE；And

    Transmitter, for sending instruction information to the base station for servicing the UE, the instruction information is used to indicate the UE as first kind UE, so that the base station is by first communication network of UE access；

    Wherein, the first kind UE is the UE used by a user for taking high-speed mobile tool, and first communication network includes high-speed mobile instrument communications network.
34. First core network control surface node device according to claim 33, it is characterized in that, first communication network and second communication network are different public land mobile network PLMN respectively, or, first communication network and second communication network are the same PLMN, but use different access frequency points.
35. First core network control surface node device according to claim 33 or 34, it is characterized in that, the transmitter sends the instruction information to the base station, so as to which the UE is redirected to first communication network after base station receives the instruction information.
36. First core network control surface node device according to claim 33 or 34, it is characterized in that, the processor is also used to distribute the first wireless access standard/frequency point priority users file identification SPID value for the UE, and the instruction information is the first SPID value；

    The transmitter is used to send the first SPID value to the base station, and the first SPID value is used to indicate the base station and sends the first frequency point precedence information to the UE, wherein The first frequency point precedence information is used to indicate the UE and the frequency point of first communication network is preferentially selected to be resident.
37. According to any first core network control surface node device of claim 33 to 36, which is characterized in that the transmitter is used to send context release order message to the base station, and the context release order message carries the instruction information.
38. According to any first core network control surface node device of claim 33 to 36, which is characterized in that the transmitter, which is used to send initial context to the base station, establishes request message, and the initial context establishes request message and carries the instruction information；

    Alternatively, the transmitter is used to send context modification request message to the base station, the context modification request message carries the instruction information.
39. According to any first core network control surface node device of claim 33 to 36, which is characterized in that the transmitter is used to send downlink Non-Access Stratum NAS direct-sending message to the base station, and the downlink NAS direct-sending message carries the instruction information.
40. According to any first core network control surface node device of claim 33 to 36, which is characterized in that further include:

    First receiver, the mobile management area update request message sent for receiving the UE.
41. First core network control surface node device according to claim 40, which is characterized in that the mobile management area update request message carries former mobile management regional code；

    When the former mobile management regional code is the mobile management regional code of first communication network, the processor is used to determine that the UE is first kind UE according to the former mobile management regional code.
42. According to any first core network control surface node device of claim 33 to 40, it is characterized in that, the transmitter is also used to send user's context request message, first core network control surface node device to the second core network control surface node device further include:

    Second receiver, the user's context response message sent for receiving second core network control surface node device, the user's context response message includes the instruction information；

    The processor is used to determine that the UE is first kind UE according to the instruction information.
43. According to any first core network control surface node device of claim 33 to 40, which is characterized in that first core network control surface node device is first communication network The core network control surface node device of network and the shared deployment of second communication network,

    The processor is also used to before the second communication network described in the UE access, identifies that the UE is first kind UE, and record the mapping relations between the identity of the UE and first kind UE；

    First core network control surface node device further include:

    Third receiver, the identity reported for receiving the UE；

    The processor is used to determine that the UE is first kind UE according to the identity and the mapping relations.
44. According to any first core network control surface node device of claim 33 to 40, which is characterized in that further include:

    4th receiver, the specific identity reported for receiving the UE, the specific identity is to be issued before the second communication network described in the UE access from the second core network control surface node device to the UE, and it is first kind UE that the specific identity, which is used to indicate the UE,；

    The processor is used to determine that the UE is first kind UE according to the specific identity.
45. According to any first core network control surface node device of claim 33 to 40, which is characterized in that further include:

    5th receiver, for receiving the notification message of the base station, it is first kind UE that the notification message, which is used to indicate the UE,；

    The processor is used to determine that the UE is first kind UE according to the notification message.
46. According to any first core network control surface node device of claim 33 to 40, which is characterized in that

    If the UE is in Idle state, when the processor identifies that the UE triggers the number of mobile management area update process greater than preset value within a preset period of time, it is determined that the UE is first kind UE；Or,

    If the UE is in Idle state, when the processor identifies base station of the mobile management area update request message from the second communication network close to first communication network, the UE is then paged by the transmitter with setting means and sets number, if the processor identifies the message of setting number in the page-response message of the UE transmission from different base stations and the different base station is all the base station of the second communication network close to first communication network, it is determined that the UE is first kind UE；Or,

    If the UE is in connected state, when the processor identifies that the number that the base station for servicing the UE converts within a preset period of time is greater than preset value, it is determined that the UE is first kind UE；Or

    If the UE is in connected state, when the processor identifies the base station difference for servicing the UE of setting number and the base station that the different base station is all the second communication network close to first communication network, it is determined that the UE is first kind UE.
47. According to any first core network control surface node device of claim 41 to 46, it is characterized in that, after the processor determines that the UE is first kind UE, the processor is also used to be that the identity information of the UE of the first kind is stored in the corresponding user's context of the UE by the UE.
48. First core network control surface node device according to claim 47, it is characterized in that, if it is first kind UE that the processor, which according to the former mobile management regional code determines the UE not, the processor is also used to not be that the identity information of the UE of the first kind is stored in the corresponding user's context of the UE by the UE.
49. According to any first core network control surface node device of claim 40 or 41, which is characterized in that the mobile management region includes tracking area TA, Route Area RA, position area LA or cell.
50. According to any first core network control surface node device of claim 33 to 49, which is characterized in that the high-speed mobile tool includes high-speed railway train, subway or light rail.
51. According to any first core network control surface node device of claim 33 to 50, it is characterized in that, first core network control surface node device includes mobility management entity MME or general packet radio service Serving GPRS Support Node SGSN or moving exchanging center MSC.
52. A kind of base station of the second communication network of served user equipment UE characterized by comprising

    Receiver, for receiving the instruction information of core network control surface node device transmission, the instruction information is that the core network control surface node device is determined and sent after the UE is first kind UE to the base station, and it is first kind UE that the instruction information, which is used to indicate the UE,；And

    Transmitter, for sending first message to the UE according to the instruction information, the first message carries redirection information, and the redirection information includes frequency point information corresponding with first communication network, so that the UE is redirected back to first communication network；

    Wherein, the first kind UE is the UE used by a user for taking high-speed mobile tool, and first communication network includes high-speed mobile instrument communications network.
53. Base station according to claim 52, it is characterized in that, first communication network and second communication network are different public land mobile network PLMN respectively, or, first communication network and second communication network are the same PLMN, but use different access frequency points.
54. The base station according to claim 52 or 53, which is characterized in that the first message includes radio resource control RRC connection release message.
55. According to any base station of claim 52 to 54, which is characterized in that

    The receiver is used to receive the downlink Non-Access Stratum NAS direct-sending message of core network control surface node device transmission, and the downlink NAS direct-sending message carries the instruction information；

    Alternatively, the receiver is used to receive the context release order message of core network control surface node device transmission, the context release order message carries the instruction information；

    Alternatively, the initial context that the receiver is used to receive core network control surface node device transmission establishes request message, the initial context establishes request message and carries the instruction information；

    Alternatively, the receiver is used to receive the context modification request message of core network control surface node device transmission, the context modification request message carries the instruction information.
56. A kind of base station of the second communication network of served user equipment UE characterized by comprising

    Receiver, for receiving the first wireless access standard/frequency point priority users file identification SPID value of core network control surface node device transmission, the first SPID value is that the core network control surface node device is determined and sent after the UE is first kind UE to the base station；And

    Transmitter, for sending the first frequency point precedence information to the UE according to the first SPID value, the first frequency point precedence information is used to indicate the UE and the frequency point of first communication network is preferentially selected to be resident；

    Wherein, the first kind UE is the UE used by a user for taking high-speed mobile tool, and first communication network includes high-speed mobile instrument communications network.
57. Base station according to claim 56, it is characterized in that, first communication network and second communication network are different public land mobile network PLMN respectively, or, first communication network and second communication network are the same PLMN, but use different access frequency points.
58. The base station according to claim 56 or 57, which is characterized in that

    The receiver is used to receive the downlink Non-Access Stratum NAS direct-sending message of core network control surface node device transmission, and the downlink NAS direct-sending message carries the first SPID value；

    Alternatively, the receiver is used to receive the context release order message of core network control surface node device transmission, the context release order message carries the first SPID value；

    Alternatively, the initial context that the receiver is used to receive core network control surface node device transmission establishes request message, the initial context establishes request message and carries the first SPID value；

    Alternatively, the receiver is used to receive the context modification request message of core network control surface node device transmission, the context modification request message carries the first SPID value.
59. According to any base station of claim 56 to 58, which is characterized in that the transmitter is used to send radio resource control RRC connection release message to the UE, carries the first frequency point precedence information in the RRC connection release message.
60. According to any base station of claim 56 to 59, which is characterized in that the first frequency point precedence information further includes timer value, and the timer value is used to indicate the frequency point precedence information effective duration.
61. A kind of communication system, which is characterized in that the base station of the second communication network of the served user equipment UE including the first core network control surface node device as described in claim 33 to 51 is any, and as described in claim 52 to 55 is any.
62. A kind of communication system, which is characterized in that the base station of the second communication network of the served user equipment UE including the first core network control surface node device as described in claim 33 to 51 is any, and as described in claim 56 to 60 is any.