WO2016141528A1

WO2016141528A1 - Method for controlling user equipment accessing communication network of high-speed moving vehicle

Info

Publication number: WO2016141528A1
Application number: PCT/CN2015/073882
Authority: WO
Inventors: 崇卫微; 吴晓波; 席国宝
Original assignee: 华为技术有限公司
Priority date: 2015-03-09
Filing date: 2015-03-09
Publication date: 2016-09-15
Also published as: WO2016141789A1; CN107211336A; CN107211337A

Abstract

Provided in embodiments of the present invention are a communication method, a node device of a core network control surface, a base station, and a communication system. The method comprises: when a user equipment UE accesses a second communication network, identifying, by the node device of a first core network control surface, the UE as a first type of UE; transmitting, by the node device of the first core network control surface, an indication information to a base station serving the UE, the indication information being used to indicate that the UE is a first type of UE so as to enable the base station to allow access by the UE to the first communication network. The first type of UE is a UE used by a user riding in a high-speed moving vehicle, and the first communication network comprises a high-speed moving vehicle communication network. The embodiment of the present invention improves user experience for the first type of UE.

Description

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

Technical field

The present invention relates to the field of mobile communications technologies, and in particular, to a method for controlling a 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 China and around the world. For example, high-speed moving tools include high-speed railway trains (hereinafter referred to as "high-speed rail trains"), maglev trains, subways, and the like. 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 rapid growth trend. With the large-scale, high-speed mobile equipment moving frequently for a long time and the demand for information construction of high-speed mobile tools, the communication requirements of high-speed mobile tools are increasingly strong.

However, high-speed mobile tool communication is different from conventional indoor and outdoor mobile communication scenarios. Due to the fast running speed of the train, the large penetration loss of the car body, and the complex and variable terrain of the scene, the existing public network is not suitable for riding high speed. The user of the mobile tool provides the service. As a result, the need to build a network dedicated to serving high-speed mobile users is growing. The "public network" herein refers to a general wireless cellular communication network that is different from the above-mentioned private network. The private network and the public network may be different public land mobile networks (English: public land mobile network, PLMN for short); or may be divided into two types of network areas under the same PLMN, both of which may have space Overlap, but use different access frequencies. For example, equipment vendors and operators have begun to plan and deploy such high-speed rail-specific wireless networks (hereinafter referred to as "high-speed rail private networks"). The high-speed rail network covers the high-speed rail on the way and near the platform of the high-speed railway station. The cell deployment in the high-speed rail station area is shown in Figure 1A. The waiting room 102, the inbound and outbound channel 103, the station 104 and the cell 106 of the high-speed railway station are all planned to belong to a private network cell covered by the high-speed rail private network. The train station square outside the train station is planned to belong to the public network district 105. At present, the high-speed rail network plans to deploy the private network community and the public network community independently. In view of the characteristics of railway line coverage, the high-speed rail private network adopts a scheme of continuous coverage of cell cascades, as shown in Figure 1B. In the example of FIG. 1B, the track area of the high-speed rail is continuously covered by the cascaded private network cell 111, and the public network cell 115 also covers the track area of the high-speed rail.

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

(1) In most areas of the high-speed rail line (for example, during the high-speed rail travel), the high-speed rail private network and the surrounding public network do not match the neighbor relationship. That is to say, the private network cell is only configured with the cascading cell under the private network as the neighboring cell, and the public network is not configured as the neighboring cell; the public network cell is not configured with the private network cell as the neighboring cell;

(2) Configuring a public network cell and a private network cell as a mutual neighbor relationship in the vicinity of the station of the railway station, so that the first type of UE enters the private network cell from the public network cell (such as the public network cell 105 in FIG. 1A). The public network cell 101 in FIG. 1A enters the public network cell from the private network cell.

In the course of the high-speed rail, because there is no mutual neighbor relationship between the high-speed rail private network and the surrounding public network, in general, the user equipment (English: user equipment, referred to as UE) will not easily come from an idle state. The network cell (such as the public network cell 115 in FIG. 1B) performs cell reselection to another network cell (such as the private network cell 111 in FIG. 1A), and does not easily perform handover process switching to another in the connected state. Kind of network cell. Therefore, in the middle of the high-speed mobile tool, when the UE is disconnected from the high-speed mobile tool communication network and accesses the public network due to abnormal reasons, the prior art cannot make the UE quickly return to the high-speed mobile tool communication network, which affects the riding speed. The user experience of the user of the mobile tool.

Summary 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 to improve a user experience of a user riding a high-speed mobile tool.

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;

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

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

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 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 radio access system/frequency point priority user file identifier SPID value to the UE;

The indication information is the first SPID value, and the first core network control plane node device sends the indication information to the base station that serves 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 indicate that the base station sends the first frequency point priority information to the UE, where The first frequency point priority information is used to indicate that the UE preferentially selects a frequency point of the first communication network to camp.

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, the first core network control plane node device to a base station serving the UE Send instructions, including:

The first core network control plane node device sends a context release instruction message to the base station, where the context release instruction 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 to a base station serving the UE Send instructions, including:

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

Or 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, the first core network control plane node device to a base station serving the UE 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 the third possible implementation manners of the first aspect, in a seventh possible implementation, 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 identifies the UE as a first type of UE, including:

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

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

Transmitting, by the first core network control plane node device, a user context request message to the second core network control plane node device;

Receiving, by the first core network control plane node device, 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, according to the indication information, that the UE is a first type UE.

With reference to the first aspect, or any one of the foregoing first to seventh possible implementation manners, in the tenth possible implementation manner, the first core network control plane node device is the first communications 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 of UE, and records an identifier between the UE and a first type of UE. Mapping relations;

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.

With reference to the first aspect, or any one of the foregoing first to seventh possible implementation manners, in the eleventh possible implementation manner, the first core network control plane node device identifies the UE as The first type of UE includes:

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

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

With reference to the first aspect, or any one of the foregoing first to seventh possible implementation manners, in the twelfth possible implementation manner, the first core network control plane node device identifies the UE as The first type of UE includes:

The first core network control plane node device receives the notification message of 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, according to the notification message, that the UE is a first type UE.

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 identifies that the UE is a first type of UE, including:

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 the mobility management region update process within a preset time period is greater than a preset value, determining that the UE is The first type of UE; or,

If the UE is in an idle state, when the first core network control plane node device recognizes that the mobility management region update request message is from a base station of the second communication network that is close to the first communication network, And calling the UE to set the number of times, if the first core network control plane node device identifies that the set number of messages in the paging response message sent by the UE are from different base stations, and the different base stations are close to each other. Determining, by the base station of the second communication network of the first communication network, that the UE is a UE of the first type; or

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

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

With the possible implementation of any one of the eighth to the thirteenth aspects of the first aspect, in a fourteenth possible implementation manner, the method further includes:

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

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

In combination with the first aspect, or any one of the first to sixteenth possible implementations of the first aspect, in the seventeenth possible implementation, the high speed moving tool comprises a high speed railway train, a subway, or a light rail.

With reference to the first aspect, or any one of the first to the seventeenth possible implementation manners of the first aspect, in the eighteenth possible implementation, 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, where the method includes:

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

Sending, by the base station, the first message to the UE according to the indication information, where the first message carries redirection information, where the redirection information includes frequency point information corresponding to the first communication network, so that the Redirecting the UE back to the first communication network;

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 communications network and the second communications network are respectively different public land mobile network PLMNs, or the first communications network and the second The communication network is the same PLMN, but uses different access frequencies.

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

The base station receives a downlink non-access stratum NAS direct transmission message sent by the 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 the 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 indication information sent by the control plane node device includes:

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

With reference to the second aspect, or any one of the first to the 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 indication information sent by the control plane node device includes:

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

Or the base station receives a context modification request message sent by the 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, where the method includes:

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. The node device determines that the UE is sent to the base station after being the first type of UE;

The base station sends the first frequency point priority information to the UE according to the first SPID value, where the first frequency point priority information is used to indicate that the UE preferentially selects a frequency point of the first communication network. Resident

In a first possible implementation manner of the third aspect, the first communications network and the second communications network are respectively different public land mobile network PLMNs, or the first communications network and the second 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 a second possible implementation manner, the base station of the second communication network that serves 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 the 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 a third possible implementation manner, the base station of the second communication network that serves the user equipment UE receives the information sent by the core network control plane node device. The first SPID value, including:

Receiving, by the base station, an initial context setup request message sent by the core network control plane node device, where the initial context setup request message carries the first SPID value;

Or the base station receives a context modification request message sent by the 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 that serves 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 instruction message sent by the core network control plane node device, where the context release instruction 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 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, where 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 the fifth possible implementation manners of the third aspect, in the sixth possible implementation, the first frequency point priority information further includes a timer value, The timer value is used to indicate the duration during which the frequency priority information is valid.

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

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

a transmitter, configured to send, to the base station that serves the UE, the indication information, where the indication information is used to indicate that the UE is a first type of UE, so that the base station accesses the UE to a first communications network;

In a first possible implementation manner of the fourth aspect, the first communications network and the second communications network are respectively different public land mobile network PLMNs, or the first communications network and the second The communication network is the same PLMN, but uses different access frequencies.

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 the indication information is described, the UE is redirected 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, the processor is further configured to allocate the first radio access system/frequency 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 indicate that the base station sends first frequency point priority information to the UE, where the first frequency point The priority information is used to indicate that the UE preferentially selects a frequency point of the first communication network to camp.

With reference to the fourth aspect, or any one of the first to the third possible implementation manners of the fourth aspect, in a fourth possible implementation, the transmitter is configured to send a context release instruction message to the base station, where The context release instruction 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, the transmitter is configured to send an initial context setup request message to the base station, where The initial context setup request message carries the finger 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 the third possible implementation manners of the fourth aspect, in a sixth possible implementation, the transmitter is configured to send a downlink non-access stratum NAS to the base station And transmitting the message, the downlink NAS direct transmission message carries the indication information.

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

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

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

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

With reference to the fourth aspect, or any one of the first to the 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 The user context request message, the first core network control plane node device further includes:

a second receiver, 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 of UE.

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

The processor is further configured to: after the UE accesses the second communications network, identify the UE as a first type of UE, and record an identifier between the UE and a first type of UE. Mapping relationship;

The first core network control plane node device further includes:

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

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

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

a fourth receiver, configured to receive a dedicated identifier that is sent by the UE, where the dedicated identifier is sent by the second core network control plane node device to the UE before the UE accesses the second communications 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 specific identifier, that the UE is a first type of UE.

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

a fifth receiver, configured to receive a notification message of 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 of UE.

With reference to the fourth aspect, or any one of the first to seventh possible implementation manners of the fourth aspect, in the thirteenth possible implementation manner,

If the UE is in an idle state, when the processor identifies that the number of times that the UE triggers the mobility management area update process in a preset time period is greater than a preset value, determining that the UE is a first type UE; or ,

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

If the UE is in a connected state, when the processor identifies a base station serving the UE Determining, by the preset time period, that the number of times of transformation is greater than a preset value, determining that the UE is a first type of UE; or

If the UE is in a connected state, when the processor identifies that a set number of base stations serving the UE are 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 of UE.

With the possible implementation of any one of the eighth to thirteenth aspects of the fourth aspect, in the fourteenth possible implementation manner, when the processor determines that the UE is a first type of UE, the processing The device is further configured to save identity information of the UE that is the first type of UE in a 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, according to the original mobility management area code, that the UE is not a first type UE, The processor is further configured to save identity information of the UE that is not the first type of UE in a user context corresponding to the UE.

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

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

With reference to the fourth aspect, or any one of the first to the seventeenth possible implementation manners of the fourth aspect, in the 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 that serves a user equipment UE, including:

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

a transmitter, configured to send, according to the indication information, a first message to the UE, where 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;

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

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.

With reference to the fifth aspect, or the first or second possible implementation manner of the fifth aspect, in a third possible implementation manner,

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

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

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

Or the receiver is configured to receive a context modification request message sent by the 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 that serves a user equipment UE, including:

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

a transmitter, configured to send first frequency point priority information to the UE according to the first SPID value, where the first frequency priority information is used to indicate that the UE preferentially selects the first The frequency of a communication network is camped on;

In a first possible implementation manner of the sixth aspect, the first communications network and the second communications network are respectively different public land mobile network PLMNs, or the first communications network and the second The communication network is the same PLMN, but uses different access frequencies.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation manner,

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

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

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

Alternatively, the receiver is configured to receive a context modification request message sent by the 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, the transmitter is configured to send a radio resource control RRC connection release message to the UE, The first frequency point priority information is carried in the RRC connection release message.

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

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 the first to the eighteenth possible implementation manners of the fourth aspect, and the fifth aspect Or the base station of the second communication network serving the user equipment UE of any one of the first to third aspects of the fifth aspect.

The eighth 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 the first to the eighteenth possible implementation manners of the fourth aspect, and the sixth aspect Or the base station of the second communication network serving the user equipment UE of any one of the first to fourth aspects of the sixth aspect.

The ninth aspect, the embodiment of the present invention further provides a base station, configured to measure a speed of the UE when the UE accesses the second communication network, and 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 of UE, so that the core network control plane node device determines that the UE is the first type. UE.

The communication method, the core network control plane node device, the base station, and the communication system provided by the embodiment of the present invention, after the core network control plane node device determines that the UE is the first type UE, sends the indication information to the base station serving the UE, so that The base station accesses the UE to a first communication network private network. Therefore, even if the first type of UE (such as on the way) is mistakenly connected to the public network due to an abnormal reason, it can quickly return to the high-speed rail private network, improving the user experience of the first type of UE.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are Some embodiments of the present invention may also be used to obtain other drawings based on these drawings without departing from the prior art.

FIG. 1A is a schematic diagram showing the deployment of a high-speed rail private network and a public network in a high-speed railway station area;

FIG. 1B is a schematic diagram showing the deployment of a high-speed rail private network and a public network in a high-speed rail train track area;

2 is a flow chart showing a communication method according to an embodiment of the present invention;

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

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 in accordance with one embodiment of the present invention;

Figure 5A is a block diagram of a base station in accordance with one embodiment of the present invention;

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

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

Figure 6B is a block diagram of a base station in accordance with one embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The invention is used for controlling 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 is disconnected from the high-speed mobile tool communication network due to abnormal reasons. To the high-speed mobile tool communication network. The high-speed mobile tool communication network refers to a dedicated network for providing communication services to users who take high-speed mobile tools, and the private network and the public network may be different PLMNs; or, may 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 China Mobile's 2500Hz, 2600Hz). For convenience of description, the high speed mobile tool communication network is also referred to as a first communication network, and the public network is also referred to as a second communication network. Further, a UE used by a user who rides a high-speed mobile tool (eg, high-speed rail, light rail, subway) is simply referred to as a first type of UE, and a UE used by a user who is not a fast-moving mobile tool is referred to as a non-first type UE.

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

The high-speed mobile tool will be used as the high-speed rail, and the first communication network will be described as an example of the LTE high-speed rail private network. However, the present invention is not limited thereto, and high-speed moving tools include, but are not limited to, high-speed rail, magnetic levitation, subway, and the present invention is equally applicable to a GSM network or a UMTS network.

For example, the scene covered by the high-speed rail network can be divided into two types: the high-speed railway station and the high-speed rail. The high-speed railway station is covered by the private network, and the high-speed railway is also covered by the cascaded private network. In addition, the high-speed railway station and the route of travel are at least partially covered by the public network community near the high-speed rail network.

2 is a flow chart showing a communication method in accordance with a first embodiment of the present invention. Figure 2 is performed by a core network control plane node device (e.g., MME). The MME may be a private network MME that is independently deployed by the first communication network, or the MME may also be a shared MME shared 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 configured to simultaneously provide control plane management services for the first type of UE and the non-first type of UE.

In an embodiment of the present invention, the first type of UE may access the high-speed private network in different areas. For example, the UE may access the high-speed rail private network in the railway station area, or the UE may access the high-speed rail private network in the track area. For example, when the user enters the high-speed railway station area, such as entering the waiting room waiting for the bus or going to the platform through the road, most of the booting UEs will access the high-speed rail private network because they enter the coverage area of the high-speed rail private network signal.

There may be multiple ways for the UE to access the high-speed rail private network. For example, for a UE in an idle state, the UE enters the high-speed private network from the public network, thereby triggering the cell re-selection process to access the high-speed private network. For the UE in the connected state, the high-speed rail private network can be accessed through the LTE handover procedure. For a UE that enters the train station area (such as a waiting room, aisle, platform, etc.), it can access the high-speed rail private network by initiating an attach process under the private network area of the railway station area.

After the UE accesses the high-speed rail private network in the station area, the public network around the private network may be accessed due to abnormal reasons (such as abnormal terminal, poor private network coverage, etc.). For example, when the high-speed train runs until the private network coverage signal quality is poor or there is no private network coverage area, the UE searches for the surrounding public network frequency and selects a suitable public network cell to camp.

As shown in FIG. 2, the communication method includes:

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

For example, the MME identifies that the UE accessing the public network is the first type of UE. How the MME specifically determines whether the UE is a first type of UE will be further described in conjunction with FIG. 3A and FIG. 3B.

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

For example, the core network control plane node device sends the indication information to the base station, so that when the base station receives the indication information, the UE is redirected to the first communication network. How the base station redirects the UE to the first communication network in accordance with the indication information will be further described in conjunction with FIG. 3B.

Alternatively, before step S202, the method further includes:

S201. After the core network control plane node device (for example, the MME) determines that the UE is the first type of UE, assign the first radio access system/frequency priority user file identifier to the UE (English Subscriber Profile ID for RAT/Frequency Priority). , 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, where the first SPID value is used to indicate that the base station sends a first frequency point priority letter to the UE And the first frequency point priority information is used to indicate that the UE preferentially selects a frequency point of the first communication network to camp. How the MME allocates the SPID value to the UE and how the base station transmits the frequency point priority information based on the received SPID value will be further described in conjunction with FIG. 3A.

With the solution of the present invention, after the core network control plane node device determines that the UE is the first type of UE, it sends indication information to the base station serving the UE, so that the base station accesses the UE to the first communication network private network. Therefore, even if the first type of UE (such as on the way) is mistakenly connected to the public network due to an abnormal reason, it can quickly return to the high-speed rail private network, improving the user experience of the first type of UE.

3A is a signaling interaction diagram of a communication method in accordance with one embodiment of the present invention. The method in the scenario of FIG. 3A is implemented by the UE 310, the MME 320, and the public network eNodeB 330. The UE 310 is a first type of UE.

S301: The UE 310 accesses the public network due to an abnormality.

S302. The MME 320 identifies that the UE 310 is a first type of UE, and accordingly allocates a first SPID value to the UE 310.

For example, MME 320 can identify UE 310 as a first type of UE by any of the following means.

(1) The MME 320 may be a core network control plane node MME that is independently deployed for the high-speed rail private network, or may be an MME shared with the existing public network. In addition, since the private network base station is independent of the public network base station in the private network, and in general, it is necessary to divide the private network TA different from the public tracking area (English: Tracking Area, referred to as TA), for example, the private network TA contains Dedicated tracking area code (English: Tracking Area Code, referred to as TAC). Therefore, it is possible to distinguish whether the TA is a private network TA or a public network TA by TAC.

In addition, since the private network TA and the public network TA belong to different types of TAs, they are generally planned to belong to different TA lists. When the UE 310 accesses the public network TA from the original private network TA, the TAU process is initiated. For example, the UE 310 sends a TAU Request message to the core network control plane node device MME 320, where the TAU request message carries the original TAC (old TAC) cell, and the original TAC cell corresponds to the private network TAC.

Therefore, step S302 can include:

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

When the original mobility management area code is encoded as the mobility management area of the first communication network, the first core network control plane node device encodes according to the original mobility management area (eg, old TAC cell) And determining that the UE is a first type of UE.

It should be noted that, for some non-first type UEs (for example, UEs used by users who are not on the high-speed rail) to access the high-speed rail private network, the prior art may adopt a handover manner to move such UEs out of the high-speed rail. Network, thus avoiding a large number of ordinary users occupying the resources of the high-speed rail network for a long time. Although the old TAC cell of such a UE also corresponds to the private network TAC, the MME may not judge the old TAC cell that is in the process of initiating the TAU, even if the old TAC cell reported by the UE corresponds to the private network TAC. One type of UE.

(2) When the UE 310 camps on the private network (that is, before accessing the high-speed rail public network), the private network/shared second MME first identifies that the UE is the first type UE after the UE 310 accesses the private network, and the identity information is obtained. Saved in the user context. The public network/shared first MME may identify the UE as a first type of UE by means of a private network/shared notification by the second MME.

Therefore, step S302 can 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 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 and deploy the core network control device, the second core network control plane node device is the core network device shared by the private network and the public network;

(3) When the private network and the public network control plane node MME share the deployment, 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 records the mapping between the UE identity and the first type of UE Shooting relationship. The identity of the UE includes, but is not limited to, an international mobile subscriber identity (IMI) or a globally unique temporary identity (English: globally unique temporary identity; GUTI). When the UE 310 is disconnected from the private network and accesses the public network, the MME may determine whether the UE is the first type UE by using the identity identifier (eg, IMSI or GUTI) reported by the UE to search for the mapping relationship of the internal record.

Therefore, step S302 can include:

S302, the first core network control plane node device receives the identity identifier reported by the UE, and determines, according to the identity identifier and the mapping relationship, that the UE is a first type UE.

(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 is delivered by the private network MME or the shared MME. Logo. For example, the dedicated identifier may be a dedicated GUTI, and the specific private network MME or the shared MME may send a dedicated GUTI to the UE 310 by using a GUTI re-allocation message, where the dedicated GUTI includes a dedicated mobility management entity code (English: mobility management entity code; Abbreviation: MMEC).

Therefore, step S302 can include:

S302, the core network control plane node device receives the dedicated identifier reported by the UE (for example, a GUTI including a dedicated MMEC), where the dedicated identifier is used by the second core before the UE accesses the second communication network. The network control plane node device is sent to the UE, and the dedicated identifier is used to indicate that the UE is a first type of UE. For example, the second core network control plane node device may be a core network control device of a public network. When the high-speed rail private network and the public network share and deploy the core network control device, 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, according to the specific identifier, that the UE is a first type UE.

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

Therefore, step S302 can include:

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

It should be noted that the public network base station determines that the UE is the first type of UE according to the speed measurement of the UE, and can be used in other scenarios or uses, 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 the frequency of the TAU process in the idle state or the frequency of the service ENB change in the connected state is higher than the preset value after the UE accesses the public network. The first type of UE.

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

S302f1, for the idle state UE, if the MME 320 recognizes that the number of times the UE 310 triggers the mobility management area update process (for example, the TAU process) in a preset time period is greater than a preset value (for example, the preset value is greater than 1), that is, If the TA where the UE is located has undergone multiple transformations, the MME 320 determines that the UE is the first type of UE.

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

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

S302f4, for the connected state UE, if the MME 320 identifies that the eNodeBs of the set number of serving UEs are different, and the different eNodeBs are all public network eNodeBs close to the high-speed rail private network, the MME 320 determines that the UE is the first type of UE. Where MME 320 is configured The relevant 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 identifies the UE 310 as the first type of UE by any of the above methods, the MME 320 allocates a 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. Accordingly, the eNodeB 330 receives the first SPID value sent by the MME 320.

For example, the MME 320 sends a downlink non-access stratum (NAS) 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 (eg, the TAU request message) sent by the UE 310, the downlink NAS direct transmission message may further include any one of the following: a mobility management area update accept message or mobility. Manage zone update rejection messages.

Taking the LTE network as an example, after the UE 310 sends the TAU request message to the MME 320, the MME 320 may first accept the TAU request, and encapsulate the first SPID value and the TAU accept message in the downlink NAS direct transmission message and send it to the serving service. The public network eNodeB 330 of the first type of UE. 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 first reject the TAU request, and encapsulate the first SPID value and the TAU reject message carrying the cause value in a downlink NAS direct transmission message and send it to the public network eNodeB 330 that is serving the UE. For example, the cause value carried in the TAU reject message may be specifically a tracking area not allowed or a suitable cell in the tracking area. The cause value is used to indicate that the TAU process initiated by the first type of UE is not allowed 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 may forward the parsed TAU reject message to the UE 310 or directly discard.

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

The MME 320 sends an initial context setup request to the public network eNodeB 330, the initial context setup request And the MME 320 sends a context modification request message to the public network eNodeB 330. The context modification request message is used to provide the eNodeB 330 with change information of a user context, and the context modification request message carries the first SPID value.

Alternatively, optionally, S303 can include:

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

For example, after receiving the TAU procedure initiated by the first type of UE, the MME 320 may accept or reject the TAU request initiated by the UE. After the MME 320 completes the TAU process and completes the TAU accept/reject message delivery, the MME 320 triggers the S1. The interface releases the procedure to release the signaling plane connection of the UE. The MME 320 sends an S1 interface Context Release Command message carrying the first SPID value to the public network base station eNodeB 330, where the first SPID value is used to notify the public network base station eNodeB 330 that the UE is The first type of 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 according to the data. Accordingly, the UE 310 receives the first frequency point priority information. The first frequency point priority information is used to indicate that the UE preferentially selects a frequency point of the first communication network to camp, that is, preferentially accesses the high-speed rail private network.

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

Table 1

As shown in Table 1, when the SPID is equal to 5, the first frequency priority information corresponds to the priority group 1. In the priority group 1, the frequency of the public network is 800M, the priority level is 6, and the frequency 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 representing the corresponding network, that is, the frequency at which the UE preferentially accesses the network having the higher priority 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 the priority 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 transmits the first frequency point priority information to the UE 310.

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

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

When the UE 310 accesses the public network, the user experience drops significantly. Once the user ends the service usage, the UE 310 quickly enters the idle state. After the UE 310 receives the first frequency point priority information sent by the public network base station 330 and enters the idle state, the UE selects the frequency point corresponding to the high-speed rail private network to perform the camping according to the first frequency point priority information. For example, if the UE 310 searches for the frequency of a cell in the high-speed private network to perform the re-selection process, it reselects to the cell.

Taking the LTE high-speed rail private network as an example, in general, the high-speed rail private network TA and the neighboring public network TA 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 re-election to the high-speed rail private network. The UE sends a TAU request message to the high-speed rail private network/shared core network control plane node MME, where the old TAC carried by the TAU request message corresponds to the public network TAC. The high-speed private network/shared core network control plane node (MME) accepts the TAU request initiated by the UE to allow access by the UE.

According to the solution of the present invention, after the first type of UE accesses the public network due to the abnormality, the core network control plane node device MME can identify the UE as the first type UE in multiple manners, and allocate the first to the UE according to the solution. The SPID value sends 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 the UE 310 immediately selects the frequency of the high-speed mobile tool communication network with high priority after the public network enters the idle state. In. That is to say, even if the UE 310 accesses the public network by mistake due to an abnormal reason, the high-speed mobile tool communication network can be quickly re-accessed according to the first frequency point priority information, thereby improving the user experience of the first type UE.

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

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

S305. The UE 310 determines whether the timer expires. When the timer of the UE 310 does not time out, the UE 310 performs the above-described step S306. After the timer expires, step S307 is performed. In S307, the UE 310 accesses the network corresponding to the frequency point with high priority according to other frequency point priority information.

Because the timer of the first frequency priority information is set, after the timer expires, the first frequency priority information is invalid, then the UE 310 can access the high priority frequency according to other frequency priority information. The network corresponding to the point. Therefore, the first frequency priority information does not affect the process and service of the UE 310 on the public network after leaving the railway station to enter the urban area.

Optionally, the communication method further includes step S308, and the 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 of UE, the core network control plane node device saves the identity information of the UE that is the first type of UE to the UE. In the user context. For example, MME 320 may be at the UE The first indicator cell is added in the context of the context. The first indicator cell is used to indicate that the UE is a first type of UE.

Correspondingly, in step S306, after the high-speed rail/shared core network control plane node MME receives the TAU request message sent by the UE, the high-speed rail/shared core network control plane node MME also sends the UE to the original public The network/shared core network control plane node (MME) acquires the user context of the UE. When the first indication cell is included in the user context, the high-speed rail private network/shared core network control plane node MME accepts the TAU request initiated by the UE to allow access by the UE. When the first indication cell is not included in the user context, the high-speed rail private network/shared core network control plane node MME rejects the access request of such a UE, and sends a TAU reject message to such UE.

Therefore, the public network/shared MME stores identity information for the first type of UE, for example, adding a corresponding indication cell in the context of the user. For a non-first type of UE that is incorrectly connected to the high-speed rail private network, the high-speed rail private network/shared core network control plane node MME rejects access of such UEs because there is no corresponding first indication cell in the user context. Therefore, it is also avoided that the non-first type UE accesses the high-speed rail network in the non-railway area (track area) and occupies the private network resource, thereby further improving the user experience of the first type UE.

Optionally, the communication method further includes step S309, and the sequence of executing S308 and S309 is not limited herein.

S309, if the core network control plane node device determines, according to the original mobility management area code, that the UE is not a first type of UE, the core network control plane node device uses the UE to be not the identity of the first type of UE. The information is stored in a user context corresponding to the UE. For example, MME 320 may add a second indicator cell in the context of the UE. The second indicator cell is used to indicate that the UE is not the first type of UE.

Correspondingly, in step S306, after the high-speed rail/shared core network control plane node MME receives the TAU request message sent by the UE, the high-speed rail/shared core network control plane node MME also sends the UE to the original public The network/shared core network control plane node (MME) acquires the user context of the UE. When the user context includes a first indication cell indicating that the UE is a first type of UE, the high-speed rail/shared core network control plane node MME accepts the UE-initiated TAU request and allows the UE Access. When the user context includes a second indication cell indicating that the UE is not the first type of UE, The high-speed rail private network/shared core network control plane node MME rejects the access request of such a UE and sends a TAU reject message to such UE.

Similarly, since the public network/shared MME also stores identity information for non-first type UEs that are erroneously accessing the high-speed rail private network, the high-speed rail private network/shared core network control plane node MME can reject access of such UEs accordingly. Therefore, the non-first type UE is also prevented from accessing the high-speed private network and occupying the private network resources, thereby further improving the user experience of the first type of UE.

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

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

S402. The MME 320 identifies that the UE 310 is a first type of UE. For details on how the MME 320 identifies the UE 310 as the first type of UE, refer to the description of step S302, and details are not described herein again.

S403. After the MME 320 identifies that the UE 310 is the first type of UE, the MME 320 sends the indication information to the public network base station eNodeB 330, so that when the public network base station eNodeB 330 receives the indication information, the UE 310 is redirected 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, where the downlink NAS direct transmission message carries the indication information. If the MME 320 receives the mobility management area update request message (eg, the TAU request message) sent by the UE 310, the downlink NAS direct transmission message may further include any one of the following: a mobility management area update accept message or mobility. Manage zone update rejection messages. For the MME 320 to provide the indication information to the public network base station eNodeB 330 by using the downlink NAS direct transmission message, reference may be made to the description in S303, and details are not described herein again.

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

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

Alternatively, S403 may specifically include:

The core network control plane node device MME 320 sends a context release instruction message (eg, an S1 interface context release instruction message) to the public network base station eNodeB 330, where the context release instruction message carries the indication information. The description of how the MME 320 provides the indication information to the public network base station eNodeB 330 by using the context release command message may refer to the description of how the MME 320 in S303 provides the first SPID value to the public network base station eNodeB 330 through the context release instruction message, and details are not described herein again.

S404. The base station sends a first message to the UE according to the indication information, where the first message carries redirection information, where the redirection information includes frequency point information corresponding to the first communication network, so that the The UE redirects back to the first communication network. The first message may be a radio resource control 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. 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 further 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 The UE is either directly discarded.

Alternatively, when the public network eNodeB 330 receives the S1 interface context release command message that carries the indication information sent by the MME 320, the RRC connection release message is sent to the first type of UE to trigger the redirection process. 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, after the first type of UE accesses the public network due to the abnormal reason, the core network control plane node device MME can identify the UE as the first type UE in multiple manners, and send the indication information to the public according to the solution. Network base station. The public network base station sends a first message (for example, an RRC connection release message) to the UE according to the received indication information, where the first message carries redirection information, where the redirection information includes corresponding to the first communication network. Frequency point information to redirect the UE back to the first communication network. That is, even The UE 310 can access the public network by mistake due to an abnormality, and can quickly re-access the high-speed mobile tool communication network through redirection, thereby improving the user experience of the first type of UE.

4 is a block diagram of a core network control plane node device 400 (e.g., MME 320) in accordance with one embodiment of the present invention. The core network control plane node device of FIG. 4 can be used to perform the method steps of the core network control plane node device of 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 a first type of UE after the UE accesses the second communication network. The transmitter 322 is configured to send indication information to the base station that serves the UE, where the indication information is used to indicate that the UE is a first type of UE, so that the base station accesses the UE to the first communication network.

Optionally, the sender 322 sends the indication information to the base station, so that when the base station receives the indication information, the UE is redirected to the first communication network.

Alternatively, the processor 324 is further configured to allocate, by the processor, a first SPID value, where the indication information is the first SPID value, and the transmitter 322 is configured to send the a first SPID value, where the first SPID value is used to indicate that the base station sends the first frequency point priority information to the UE, where the first frequency point priority information is used to indicate that the UE preferentially selects The frequency of the first communication network is camped on.

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.

Alternatively, the transmitter 322 is configured to send an initial context setup request message to the base station, where the initial context setup request message carries the indication information; or the transmitter 322 is configured to send to the base station And sending a context modification request message, where the context modification request message carries the indication information.

Alternatively, 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 a mobility management area update request message sent by the UE.

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

Alternatively, the transmitter 322 is further configured to send a user context request message to the second core network control plane node device, where the first core network control plane node device further includes: a second receiver, 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, and the processor 324 is configured to determine, according to the indication information, that the UE is a first type UE .

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

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 before the UE accesses the second communication network The second core network control plane node device sends the information to the UE, where 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 specific identifier, that the UE is a first type of UE.

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

Alternatively, optionally, if the UE is in an idle state, when the processor 324 identifies that the UE triggers the mobility management region update process within a preset time period, the number of times is greater than a preset value, determining the UE. For the first type of UE; or,

If the UE is in an idle state, when the processor 324 recognizes that the mobility management region update request message is from a base station of the second communication network close to the first communication network, the transmitter is configured in a set manner. Calling the UE to set the number of times, if the processor 324 identifies that the number of messages in the paging response message sent by the UE is different from Determining, by the base station, that the different base stations are base stations of the second communication network that are close to the first communication network, determining that the UE is a first type of UE; or

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

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

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

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

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

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

The transmitter 334 is configured to send, according to the indication information, a first message to the UE, where the first message carries redirection information, where the redirection information includes frequency point information corresponding to the first communications 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 non-access stratum NAS direct transmission message sent by the core network control plane node device, where the downlink NAS direct transmission message carries the indication information;

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

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

Alternatively, the receiver 332 is configured to receive a context modification request message sent by the 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 in accordance with another embodiment of the present invention. For example, the base station in Figure 5B can be used to perform the method steps of base station 330 in Figure 3B. Base station 330 includes a receiver 336 and a transmitter 338.

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

The transmitter 338 is configured to send the first frequency point priority information to the UE according to the first SPID value, where the first frequency priority information is used to indicate that the UE preferentially selects the frequency of the first communication network. Point to reside.

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

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

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

Alternatively, the receiver 336 is configured to receive a context modification request message sent by the 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, where the timer value is used to indicate a duration in which the frequency priority information is valid.

6A and 6B are block diagrams respectively showing a communication system according to an embodiment of the present invention. The communication system 600 in FIG. 6A includes the core network control plane node device in FIG. 400 and base station 500 in Figure 5A. Communication system 620 in Figure 6B includes core network control plane node device 400 of Figure 4 and base station 520 of Figure 5B. I will not repeat them here.

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

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A communication method, comprising:

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;

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

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.
The method of claim 1 wherein said first communication network and said second communication network are respectively different public land mobile network PLMNs, or said first communication network and said second communication The network is the same PLMN, but uses different access frequencies.
The method according to claim 1 or 2, wherein the first core network control plane node device sends the indication information to the base station, so that when the base station receives the indication information, The UE is redirected to the first communication network.
The method according to claim 1 or 2, wherein the method further comprises:

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

The indication information is the first SPID value, and the first core network control plane node device sends the indication information to the base station that serves 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 indicate that the base station sends the first frequency point priority information to the UE, where The first frequency point priority information is used to indicate that the UE preferentially selects a frequency point of the first communication network to camp.
The method according to any one of claims 1 to 4, wherein the first core network control plane node device sends the indication information to the base station serving the UE, including:

The first core network control plane node device sends a context release instruction message to the base station, where the context release instruction message carries the indication information.
The method according to any one of claims 1 to 4, wherein the first core network control plane node device sends the indication information to the base station serving the UE, including:

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

Or 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.
The method according to any one of claims 1 to 4, wherein the first core network control plane node device sends the indication information to the base station serving the UE, 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.
The method according to any one of claims 1 to 4, wherein the method further comprises:

The first core network control plane node device receives the mobility management area update request message sent by the UE.
The method according to claim 8, wherein the mobility management area update request message carries an original mobility management area code;

The first core network control plane node device identifies the UE as a first type of UE, including:

When the original mobility management area is encoded as the mobility management area of the first communication network, the first core network control plane node device determines that the UE is the first according to the original mobility management area code. Type UE.
The method according to any one of claims 1 to 8, wherein the first core network control plane node device identifies the UE as a first type of UE, including:

Transmitting, by the first core network control plane node device, a user context request message to the second core network control plane node device;

Receiving, by the first core network control plane node device, 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, according to the indication information, that the UE is a first type UE.
The method according to any one of claims 1 to 8, wherein the first core network control plane node device shares a deployed core network control plane node device for the first communication network and 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 of UE, and records an identifier between the UE and a first type of UE. Mapping relations;

The first core network control plane node device identifies the UE as a first type of UE, including:

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.
The method according to any one of claims 1 to 8, wherein the first core network control plane node device identifies the UE as a first type of UE, including:

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

The first core network control plane node device determines, according to the specific identifier, that the UE is a first type UE.
The method according to any one of claims 1 to 8, wherein the first core network control plane node device identifies the UE as a first type of UE, including:

The first core network control plane node device receives the notification message of 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, according to the notification message, that the UE is a first type UE.
The method according to any one of claims 1 to 8, wherein the first core network control plane node device identifies the UE as a first type of UE, including:

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 the mobility management region update process within a preset time period is greater than a preset value, determining that the UE is The first type of UE; or,

If the UE is in an idle state, when the first core network control plane node device identifies And the mobility management area update request message is sent from the base station of the second communication network of the first communication network, and the number of times set by the UE is set in a setting manner, if the first core network control plane node device identifies And determining, by the UE, that the set number of messages in the paging response message sent by the UE are from different base stations, and the different base stations are base stations of the second communication network that are close to the first communication network, determining that the UE is the first One type of UE; or,

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

If the UE is in a connected state, when the first core network control plane node device identifies that a set number of base stations serving the UE are different and the different base stations are close to the second of the first communication network The base station of the communication network determines that the UE is a first type of UE.
The method according to any one of claims 9 to 14, wherein the method further comprises:

After the first core network control plane node device determines that the UE is the first type of UE, the first core network control plane node device saves the identity information of the UE that is the first type of UE to the UE. In the corresponding user context.
The method of claim 15 wherein the method further comprises:

If the first core network control plane node device determines that the UE is not the first type of UE according to the original mobility management area code, the first core network control plane node device is not the first type of UE The identity information is stored in a user context corresponding to the UE.
The method according to any one of claims 8 or 9, wherein the mobility management area comprises a tracking area TA, a routing area RA, a location area LA or a cell.
The method according to any one of claims 1 to 17, wherein the high speed moving tool comprises a high speed railway train, a subway, or a light rail.
The method according to any one of claims 1 to 18, wherein the first core network control plane node device comprises a mobility management entity MME, or a general packet radio service GPRS service support node SGSN, or a mobile switching center MSC .
A communication method, characterized in that the method comprises:

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

Sending, by the base station, the first message to the UE according to the indication information, where the first message carries redirection information, where the redirection information includes frequency point information corresponding to the first communication network, so that the Redirecting the UE back to the first communication network;

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.
The method according to claim 20, wherein said first communication network and said second communication network are respectively different public land mobile network PLMNs, or said first communication network and said second communication The network is the same PLMN, but uses different access frequencies.
The method according to claim 20 or 21, wherein the first message comprises a radio resource control RRC Connection Release message.
The method according to any one of claims 20 to 22, wherein 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, including:

The base station receives a downlink non-access stratum NAS direct transmission message sent by the core network control plane node device, where the downlink NAS direct transmission message carries the indication information.
The method according to any one of claims 20 to 22, wherein 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, including:

The base station receives a context release instruction message sent by the core network control plane node device, where the context release instruction message carries the indication information.
The method according to any one of claims 20 to 22, wherein 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, including:

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

Or the base station receives a context modification request message sent by the core network control plane node device, where the context modification request message carries the indication information.
A communication method, characterized in that the method comprises:

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. The node device determines that the UE is sent to the base station after being the first type of UE;

The base station sends the first frequency point priority information to the UE according to the first SPID value, where the first frequency point priority information is used to indicate that the UE preferentially selects a frequency point of the first communication network. Resident

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.
The method of claim 26, wherein said first communication network and said second communication network are respectively different public land mobile network PLMNs, or said first communication network and said second communication The network is the same PLMN, but uses different access frequencies.
The method according to claim 26 or 27, wherein the base station of the second communication network serving the user equipment UE receives the first SPID value 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 the core network control plane node device, where the downlink NAS direct transmission message carries the first SPID value.
The method according to claim 26 or 27, wherein the base station of the second communication network serving the user equipment UE receives the first SPID value sent by the core network control plane node device, including:

Receiving, by the base station, an initial context setup request message sent by the core network control plane node device, where the initial context setup request message carries the first SPID value;

Or the base station receives a context modification request message sent by the core network control plane node device, where the context modification request message carries the first SPID value.
The method according to claim 26 or 27, wherein the base station of the second communication network serving the user equipment UE receives the core network control plane node device The first SPID value sent, including:

The base station receives a context release instruction message sent by the core network control plane node device, where the context release instruction message carries the first SPID value.
The method according to any one of claims 26 to 30, wherein the sending, by the base station, the first frequency point priority information to the UE according to the first SPID value, includes:

The base station sends a radio resource control RRC connection release message to the UE, where the RRC connection release message carries the first frequency point priority information.
The method according to any one of claims 26 to 31, wherein the first frequency point priority information further comprises a timer value, wherein the timer value is used to indicate that the frequency priority information is valid. time.
A first core network control plane node device, comprising:

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

a transmitter, configured to send, to the base station that serves the UE, the indication information, where the indication information is used to indicate that the UE is a first type of UE, so that the base station accesses the UE to a first communications network;

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.
The first core network control plane node device according to claim 33, wherein the first communication network and the second communication network are different public land mobile network PLMNs, respectively, or the first communication The network and the second communication network are the same PLMN but use different access frequencies.
The first core network control plane node device according to claim 33 or 34, wherein the transmitter sends the indication information to the base station, so that when the base station receives the indication information, Redirecting the UE to the first communication network.
The first core network control plane node device according to claim 33 or 34, wherein the processor is further configured to allocate a first radio access system/frequency priority user file identifier SPID value to the UE. 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 indicate that the base station sends the first frequency point priority information to the UE, where The first frequency point priority information is used to indicate that the UE preferentially selects a frequency point of the first communication network to camp.
The first core network control plane node device according to any one of claims 33 to 36, wherein the transmitter is configured to send a context release instruction message to the base station, where the context release instruction message carries the indication information .
The first core network control plane node device according to any one of claims 33 to 36, wherein the transmitter is configured to send an initial context setup request message to the base station, where the initial context setup request message carries the Indication 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.
The first core network control plane node device according to any one of claims 33 to 36, wherein the transmitter is configured to send a downlink non-access stratum NAS direct transmission message to the base station, and the downlink NAS direct transmission The message carries the indication information.
The first core network control plane node device according to any one of claims 33 to 36, further comprising:

The first receiver is configured to receive a mobility management area update request message sent by the UE.
The first core network control plane node device according to claim 40, wherein the mobility management area update request message carries an original mobility management area code;

And when the original mobility management area is encoded as the mobility management area of the first communication network, the processor is configured to determine, according to the original mobility management area code, that the UE is a first type of UE.
The first core network control plane node device according to any one of claims 33 to 40, wherein the transmitter is further configured to send a user context request message to the second core network control plane node device, the first The core network control plane node device further includes:

a second receiver, 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 of UE.
The first core network control plane node device according to any one of claims 33 to 40, wherein 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 processor is further configured to: before the UE accesses the second communications network, identify the UE as a first type of UE, and record a mapping relationship between the identity identifier of the UE and the first type of UE;

The first core network control plane node device further includes:

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

The processor is configured to determine, according to the identity identifier and the mapping relationship, that the UE is a first type of UE.
The first core network control plane node device according to any one of claims 33 to 40, further comprising:

a fourth receiver, configured to receive a dedicated identifier that is sent by the UE, where the dedicated identifier is sent by the second core network control plane node device to the UE before the UE accesses the second communications 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 specific identifier, that the UE is a first type of UE.
The first core network control plane node device according to any one of claims 33 to 40, further comprising:

a fifth receiver, configured to receive a notification message of 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 of UE.
The first core network control plane node device according to any one of claims 33 to 40, characterized in that

If the UE is in an idle state, when the processor identifies that the number of times that the UE triggers the mobility management area update process in a preset time period is greater than a preset value, determining that the UE is a first type UE; or ,

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

Determining, if the UE is in a connected state, determining that the UE is a first type of UE when the number of times that the base station serving the UE is changed within a preset time period is greater than a preset value; or

If the UE is in a connected state, when the processor identifies that a set number of base stations serving the UE are 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 of UE.
The first core network control plane node device according to any one of claims 41 to 46, wherein when the processor determines that the UE is a first type UE, the processor is further configured to: The identity information of the UE that is the UE of the first type is stored in the user context corresponding to the UE.
The first core network control plane node device according to claim 47, wherein if the processor determines that the UE is not a first type UE according to the original mobility management area code, the processor further uses The identity information of the UE that is not the first type of UE is saved in a user context corresponding to the UE.
The first core network control plane node device according to any one of claims 40 or 41, wherein the mobility management area comprises a tracking area TA, a routing area RA, a location area LA or a cell.
The first core network control plane node device according to any one of claims 33 to 49, wherein the high speed moving tool comprises a high speed railway train, a subway, or a light rail.
The first core network control plane node device according to any one of claims 33 to 50, wherein the first core network control plane node device comprises a mobility management entity MME or a general packet radio service GPRS service support node SGSN, or Mobile Switching Center MSC.
A base station for serving a second communication network of a user equipment UE, characterized in that it comprises:

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

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

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.
The base station according to claim 52, wherein said first communication network and said second communication network are respectively different public land mobile network PLMNs, or said first communication network and said second communication The network is the same PLMN, but uses different access frequencies.
The base station according to claim 52 or 53, wherein the first message comprises a radio resource control RRC Connection Release message.
A base station according to any one of claims 52 to 54, wherein

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

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

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

Or the receiver is configured to receive a context modification request message sent by the core network control plane node device, where the context modification request message carries the indication information.
A base station for serving a second communication network of a user equipment UE, characterized in that it comprises:

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

a transmitter, configured to send first frequency point priority information to the UE according to the first SPID value, where the first frequency priority information is used to indicate that the UE preferentially selects a frequency of the first communication network Point to reside;

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.
The base station according to claim 56, wherein said first communication network and said second communication network are respectively different public land mobile network PLMNs, or said first communication network and said second communication The network is the same PLMN, but uses different access frequencies.
A base station according to claim 56 or 57, characterized in that

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

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

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

Alternatively, the receiver is configured to receive a context modification request message sent by the core network control plane node device, where the context modification request message carries the first SPID value.
The base station according to any one of claims 56 to 58, wherein the transmitter 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 Level information.
The base station according to any one of claims 56 to 59, wherein the first frequency point priority information further includes a timer value, where the timer value is used to indicate that the frequency priority information is valid. time.
A communication system, comprising: a first core network control plane node device according to any one of claims 33 to 51, and a second communication of a serving user equipment UE according to any one of claims 52 to 55 The base station of the network.
A communication system, comprising: a first core network control plane node device according to any one of claims 33 to 51, and a second communication of a serving user equipment UE according to any one of claims 56 to 60 The base station of the network.