WO2016141789A1 - 通信方法、核心网控制面节点设备和基站 - Google Patents

通信方法、核心网控制面节点设备和基站 Download PDF

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Publication number
WO2016141789A1
WO2016141789A1 PCT/CN2016/073076 CN2016073076W WO2016141789A1 WO 2016141789 A1 WO2016141789 A1 WO 2016141789A1 CN 2016073076 W CN2016073076 W CN 2016073076W WO 2016141789 A1 WO2016141789 A1 WO 2016141789A1
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Prior art keywords
communication network
type
control plane
base station
node device
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PCT/CN2016/073076
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English (en)
French (fr)
Inventor
崇卫微
吴晓波
席国宝
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华为技术有限公司
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Priority to CN201680008153.8A priority Critical patent/CN107211337A/zh
Publication of WO2016141789A1 publication Critical patent/WO2016141789A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a communication method, a core network control plane node device, and a base station.
  • High-speed mobile tools are developing rapidly in China and around the world.
  • high-speed moving tools include high-speed railway trains (hereinafter referred to as "high-speed rail trains"), maglev trains, subways, and the like.
  • high-speed rail trains high-speed railway trains
  • maglev trains maglev trains
  • subways and the like.
  • high-speed rail trains the operating mileage of high-speed rail has reached more than 30,000 kilometers and is showing a rapid growth trend.
  • the communication requirements of high-speed mobile tools are increasingly strong.
  • 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.
  • high-speed rail private networks 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 as It belongs to the public network cell 105.
  • the high-speed rail network plans to deploy the private network community and the public network community independently.
  • the high-speed rail private network adopts a scheme of continuous coverage of cell cascades, as shown in Figure 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:
  • 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; to prevent the public network user or the private network user. Easily re-select or switch into the other party's cell.
  • This paper describes a communication method, a core network control plane node device and a base station to improve the resource utilization of the high-speed rail private network.
  • the first communication network is a dedicated communication network that provides communication services for users riding the high-speed mobile tool
  • the first type of UE is a UE used by users who are not riding the high-speed mobile tool in the first communication network.
  • the first communication network and the second communication network are different public land mobile network PLMNs respectively, or the first communication network and the second communication network are the same PLMN, but different access frequency points are used.
  • embodiments of the present application provide a method of communication.
  • the method includes: a core network control plane node device (such as an MME) determining a user equipment UE in the first communication network
  • the first type of UE sends the indication information to the base station device of the first communication network, where the indication information is used to indicate that the UE is the first type of UE, so that the base station device accesses the UE to the second communication network. Therefore, the resources of the first communication network are not occupied by the first type of UE (ie, the public network UE), and the resource utilization of the first communication network is improved.
  • the indication information is a first radio access system/frequency priority user file identifier SPID value, which is allocated by the core network control plane node device to the UE, and is used to indicate that the UE is the first type UE.
  • the base station After receiving the first SPID value, the base station triggers the UE to leave the first communication network. For example, the base station may send the frequency point priority information to the UE according to the first SPID value, where the frequency point priority information is used to indicate that the UE preferentially selects the frequency point of the second communication network to camp.
  • the base station device may also trigger a handover procedure of the UE to the second communication network according to the first SPID value, and connect the UE to the second communication network; or send a first message carrying the redirection information to the UE, where the redirection information is The frequency point information corresponding to the second communication network is included, and the UE is connected to the second communication network.
  • the core network control plane node device may reside in the first designated area (such as a private network cell within N km near the high-speed railway station or a private network area along the entire high-speed private network)
  • the time exceeds the first preset value, and it is determined that the UE is the first type UE.
  • the core network control plane node device determines that the UE accesses the first communication network through the specific area before determining that the UE in the first communication network is the first type of UE, the UE may be in the first designated area according to the UE.
  • the camp time exceeds a second preset value, and it is determined that the UE is the first type UE.
  • the second preset value is greater than the first preset value.
  • the core network control plane node device may determine that the UE is the first type UE.
  • the core network control plane node device may further add identification information indicating that the UE is the first type of UE in the user context of the UE. Further, if receiving an access request of the UE in the second designated area (eg, the second designated area includes the mobility management area of the first communication network), the core network control plane node device clears the identifier information.
  • an embodiment of the present application also provides a communication method.
  • the method includes: The core network control plane node device receives the request message that the UE sends the access to the second communication network, determines that the UE is not the first type of UE, and sends a message to the base station device of the second communication network to indicate that the UE is not the first type of UE. Instructions. After receiving the indication information, the base station device in the second communication network accesses the UE to the first communication network.
  • the UE can quickly return to the high-speed rail private network, thereby improving the user experience of the user who rides the high-speed mobile tool in the first communication network.
  • the request message includes a mobility management area update request message or an attach request message.
  • the indication information is a second SPID value, which is allocated by the core network control plane node device after determining that the UE is not the first type UE.
  • the request message contains the encoding of the mobility management area recently accessed by the UE.
  • the core network control plane node device determines that the UE is not the first type UE according to the code of the mobility management area that the UE recently accesses in the request message is the code of the mobility management area of the first communication network.
  • the core network control plane node device determines that the UE is not the first type UE according to the identifier information of the UE that is not included in the user context of the UE.
  • the core network control plane node device determines that the UE is not the first type UE according to the request message that is not received after the UE switches from the first communication network to the second communication network.
  • the base station device may access the first communication network according to the indication information by using any of the following methods:
  • the base station device triggers a handover procedure of the UE to the first communication network, and connects the UE to the first communication network; or sends a second message (eg, an RRC connection release message) carrying the redirection information to the UE, where the redirection information includes The frequency point information corresponding to the first communication network accesses the UE to the first communication network; or the base station device sends frequency priority information to the UE according to the second SPID value, where the frequency priority information is used to indicate that the UE is prioritized The frequency of the first communication network is selected for camping.
  • a second message eg, an RRC connection release message
  • an embodiment of the present invention provides a core network control plane node device.
  • the core network control plane node device may be a network entity in the core network, such as a mobility management entity MME.
  • the network entity is used to support cooperation with the base station to implement the solution in the above method design.
  • an embodiment of the present invention provides a base station, which has a function of realizing the behavior of a base station in the actual method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the base station includes a processor and a transmitter configured to support the base station to perform the corresponding functions in the above methods.
  • the transmitter is configured to support communication between the base station and the UE, and send information or instructions involved in the foregoing method to the UE.
  • the base station can also include a memory for coupling with the processor that stores the necessary program instructions and data for the base station.
  • the embodiment of the present invention provides a communication system, where the system includes the base station and the UE according to the foregoing aspect; or the system includes the base station and the network core network control plane node device in the foregoing aspect; or The system includes the base station, the UE and the core network control plane node device described in the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the base station, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the core network control plane node device, including a program designed to perform the above aspects.
  • the solution provided by the present invention can ensure that the resources of the high-speed private network are not occupied by the public network UE, thereby improving the resource utilization rate of the high-speed private network.
  • 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;
  • FIG. 2 is a flow chart showing a communication method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of signaling interaction for transmitting indication information to a base station device according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of another signaling interaction for transmitting indication information to a base station device according to another embodiment of the present invention.
  • FIG. 5 is a flow chart showing a communication method according to another embodiment of the present invention.
  • FIG. 6 is a block diagram of a core network control plane node device according to an embodiment of the present invention.
  • FIG. 7 is a block diagram of a base station apparatus according to an embodiment of the present invention.
  • Figure 8 shows a schematic diagram of a communication system in accordance with an embodiment of the present invention.
  • the invention is used for controlling a UE to access a high-speed mobile tool communication network, so that a UE of a user who is not riding a high-speed mobile tool can be accessed from a high-speed mobile tool communication network while accessing the high-speed mobile tool communication network due to an abnormal reason while traveling. Eliminate and return to the public network.
  • the high-speed mobile tool communication network refers to a dedicated network for providing communication services for users who take high-speed mobile tools (such as high-speed rail, light rail, subway), the private network and the public
  • the network may be a different PLMN; or it may be a division of two types of network areas under the same PLMN, and the two may overlap in space, but use different access frequency points (for example, China Mobile's 1900 MHz, 2100 MHz).
  • the high speed mobile tool communication network is also referred to as a first communication network, and the communication network other than the first communication network is referred to as a second communication network, for example, the second communication network is a public network.
  • the UE used by the user who is not riding the high-speed mobile tool is simply referred to as the first type UE.
  • the UE other than the first type is the second type UE.
  • the second type of UE includes a UE used by a user riding a high speed mobile tool.
  • 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), and Universal Mobile Communication System (English).
  • LTE Long Term Evolution
  • GSM Global System of Mobile communication
  • UMTS Universal Mobile Telecommunications System
  • the communication system includes at least a core network control plane node device, a UE, and a base station device.
  • the core network control plane node device includes, but is not limited to, a mobility management entity (English: Mobility Management Entity, MME for short)
  • the base station device includes but is not limited to an evolved network base station (English: E-UTRAN NodeB, abbreviated :eNodeB).
  • 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, abbreviation: RNC) ).
  • 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.
  • 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, a UMTS network, or a next-generation wireless communication system.
  • the scene covered by the high-speed rail network can be divided into high-speed rail train station and high-speed rail on the way. These two.
  • the high-speed railway station is covered by the private network, and the high-speed railway is also covered by the cascaded private network.
  • 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.
  • FIG. 2 is a flow chart showing a communication method according to a first embodiment of the present invention.
  • Figure 2 is performed by a core network control plane node device (e.g., MME).
  • 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.
  • the shared MME is configured to simultaneously provide control plane management services for the UEs in the first communication network and the UEs in the second communication network.
  • the first type of UE may access the first communication network, that is, a high-speed rail private network.
  • the reason why the first type of UE accesses the first communication network is that the coverage of the neighboring public network is weak.
  • the first type of UE selects a high-speed private network with relatively good signal for access during power-on attachment or cell reselection.
  • the method includes:
  • Step S200 The core network control plane node device determines that the UE in the first communication network is the first type UE. For example, the MME identifies that the UE residing in the high-speed rail LTE private network is actually a UE used by a user who does not take the high-speed rail, that is, belongs to the first type UE.
  • step S202 the core network control plane node device sends the indication information to the base station device serving the UE in the first communication network, where the indication information is used to indicate that the UE is a first type of UE, so that the base station device A UE accesses the second communication network.
  • the base station device that serves the UE is sent to indicate that the UE is the first type of UE.
  • the indication information causes the base station device to move the UE out of the first communication network. Therefore, the resources of the first communication network are not occupied by the first type of UE (ie, the public network UE), and the resource utilization of the first communication network is improved.
  • step S200 can include:
  • the core network control plane node device determines that the UE is a first type UE according to the UE camping time in the first designated area exceeds a first preset value.
  • the first designated area is a designated tracking area (English: Tracking Area, referred to as TA), and the base station is covered. Cover area or community.
  • the first designated area may be the above-mentioned type area of the high-speed rail LTE private network, or may be the above-mentioned type area in the surrounding public network.
  • the first designated area may be set according to an actual network environment. For example, one or more private network cells along the N-km private network cell near the high-speed railway station or the entire high-speed private network may be set as the first designated area.
  • the core network control plane node device may camp on one or more eNodeBs in the first designated area of the high-speed rail LTE private network for more than a preset value (such as 60 minutes) and the UE is not connected during the period.
  • the eNodeB outside the specified range is determined to be the UE of the first type.
  • the core network control plane node device may camp on the eNodeB in the first designated area of the high-speed rail LTE private network and the eNodeB in the neighboring public network exceeds a preset value, and the UE does not access the designated period.
  • the eNodeB outside the range determines that the UE is the first type of UE.
  • the core network control plane node device determines that the UE is a UE used by a high-speed railway or has a high-speed private network UE before determining that the UE is a first type UE
  • the core network control plane node determines that the UE is the first type UE according to the UE camping time in the first designated area exceeds a second preset value (such as 90 minutes).
  • the second preset value is greater than the first preset value.
  • the UE may be considered to have the characteristics of a high-speed private network UE.
  • the core network control plane node device determines that the UE is the first type UE according to the number of times that the mobility change area of the UE changes within a preset time period is less than a third preset value.
  • the mobility management area may be a tracking area TA or a base station coverage area or a cell or the like. This method is not limited to the designated area and can be applied to the entire high-speed rail LTE private network.
  • the core network control plane node device may determine that the UE is the first type UE according to the number of times that the mobility management area changes by the UE within a preset time period (eg, 90 minutes) is less than a third preset value (eg, three times).
  • a preset time period e.g. 90 minutes
  • a third preset value e.g, three times.
  • the serving core network control plane node of the UE changes from the first core network control plane node to the second core network control plane node
  • the first core network control plane node will use the identifier information And being transmitted to the second core network control plane node together with the user context, and the second core network control plane node may identify that the UE is the first type UE according to the identifier information.
  • the core network control plane node after the core network control plane node adds the identifier information for identifying that the UE is the first type of UE in the context of the UE, if the UE is from the second If the designated area accesses the high-speed rail LTE private network, the core network control plane node clears the identification information.
  • the second designated area is a TA or an area covered by the eNodeB of the high-speed railway LTE private network in the railway station area, and the clearing of the identification information is used to prevent the user from being mistakenly judged as a public network user due to the previous identification information when the high-speed railway is needed.
  • the second designated area may be a TA of the high-speed rail LTE private network outside the first designated area (such as the railway station N km), an area covered by the eNodeB, or a cell. If the UE is identified as the first type of UE and then accesses the second designated area, the UE is mobility, and the mobility reaches a certain level. At this time, the core network control plane node clears the identifier. The information can refresh the judgment result of the UE type.
  • the core network control plane node device may determine that the UE in the first communication network is the first type UE by using any one of the foregoing S200a to S200c or a combination of any of the foregoing manners.
  • the operation of adding the identifier information indicating that the UE is the first type of UE in the user context of the UE is not limited to the foregoing step S200c.
  • the identifier information for indicating that the UE is the first type of UE may be added to the user context of the UE.
  • the step S202 can be implemented by using an access profile/frequency priority user identifier (English Subscriber Profile ID for RAT/Frequency Priority, SPID) or switching or redirection.
  • an access profile/frequency priority user identifier English Subscriber Profile ID for RAT/Frequency Priority, SPID
  • switching or redirection can be implemented by using an access profile/frequency priority user identifier (English Subscriber Profile ID for RAT/Frequency Priority, SPID) or switching or redirection.
  • FIG. 3 is a schematic diagram of implementing step S202 by using an SPID, specifically including:
  • the core network control plane node device allocates a first SPID value to the first type of UE.
  • the first SPID value is used to indicate that the base station device 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 second communication
  • the frequency of the network is camped on.
  • the first frequency priority information is used to indicate that the frequency priority corresponding to the LTE public network is higher than the first communication network.
  • the base station device accesses the UE to the second communication network.
  • the core network control plane node device sends the first SPID value to a base station device serving the UE in the first communication network.
  • the base station device serving the UE in the first communication network receives the first SPID value sent by the core network control plane node device.
  • the MME sends a downlink non-access stratum (English: non-access stratum, NAS) direct transmission message to the private network eNodeB, and the downlink NAS direct transmission message carries the first SPID value.
  • the MME receives the mobility management area update request message (for example, the TAU request message) sent by the UE, the downlink NAS direct transmission message may further include any one of the following: a mobility management area update accept message or a mobility management area. Update rejection message.
  • the MME 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 the message to the serving A private network eNodeB of the first type of UE.
  • the private network eNodeB parses the received downlink NAS direct transmission message to obtain the first SPID value and the TAU accept message, and the private network eNodeB can forward the parsed TAU accept message to the UE or directly discard it.
  • the MME 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 the message to the private network eNodeB that is serving the UE.
  • 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 private network TA again.
  • the private network eNodeB parses the received downlink NAS direct transmission message to obtain the first SPID value and the TAU reject message, and the private network eNodeB can forward the parsed TAU reject message to the UE 310 or directly discard it.
  • S202a2 may include:
  • the MME sends an initial context setup request message to the private network eNodeB, where the initial context setup request message is used to instruct the eNodeB to establish a context of the user, where the initial context setup request message carries Carrying the first SPID value; or, the MME sends a UE context modification request message to the private network eNodeB, where the context modification request message is used to provide the eNodeB with change information of the user context, the context modification The request message carries the first SPID value.
  • S202a2 may include:
  • the MME sends a context release instruction message (eg, an S1 interface context release instruction message) to the private network eNodeB, where the context release instruction message carries the first SPID value.
  • a context release instruction message eg, an S1 interface context release instruction message
  • the MME may accept or reject the TAU request initiated by the UE.
  • the MME triggers the S1 interface release process. To release the signaling plane connection of the UE.
  • the MME sends an S1 interface Context Release Command message carrying the first SPID value to the private network eNodeB, where the first SPID value is used to notify the private network eNodeB that the UE is a first type UE.
  • the private network eNodeB determines the first frequency point priority information according to the first SPID value, and sends the first frequency point priority information to the UE according to the foregoing.
  • the UE 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 second communication network to camp, for example, preferentially accessing an LTE public network around the high-speed railway.
  • the mapping between different SPID values and various frequency point priority information may be pre-configured in the private network eNodeB. Therefore, after receiving the first SPID value, the private network eNodeB can obtain the corresponding first frequency point priority information by querying the configured mapping relationship. For example, in the mapping relationship, the public network frequency of the first type of UE to be returned may be set to the highest priority. For example, a mapping relationship table as shown in Table 1 can be maintained in the eNodeB 330.
  • the first frequency priority information corresponds to the priority group 2.
  • the frequency of the public network is 1900M
  • the priority level is 7, and the frequency of the private network is 2100M.
  • the priority level is 6. 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 4, the first frequency point priority information indicates that the priority of the public network frequency point is higher than the priority of the private network frequency point.
  • the first frequency point priority information After determining, by the private network base station, the first frequency point priority information according to the first SPID value, the first frequency point priority information is sent to the UE.
  • 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 private 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.
  • the private 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 is 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 private 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
  • S202a4 The UE preferentially selects a frequency point of the second communication network to perform camping according to the first frequency point priority information.
  • the UE After receiving the first frequency point priority information sent by the private network base station and entering the idle state, the UE preferentially selects the frequency point corresponding to the public network to perform the camping according to the first frequency point priority information. For example, if the UE searches for the frequency of a cell in the LTE public network to perform the reselection process, it reselects to the public network cell.
  • the first SPID dedicated to the public network UE is sent to the private network eNodeB that serves the UE, so that the private network eNodeB is configured according to the The first SPID sends the first frequency point priority information indicating that the frequency of the LTE public network is higher than that of the LTE public network, so that the UE preferentially accesses the LTE public network, and finally the public network UE is moved out.
  • the effect of the high-speed rail LTE private network ensures that the resources of the high-speed rail LTE private network are not occupied by the public network UE, and the resources of the high-speed rail LTE private network are improved. Utilization rate.
  • the first frequency priority information further includes a timer value.
  • 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.
  • step S202a4 the method further includes:
  • the UE determines whether the timer has timed out. When the timer of the UE does not time out, the UE performs the above step S202a4. After the timer expires, the network corresponding to the frequency with high priority is accessed according to other frequency priority information.
  • the UE can access the frequency point with high priority according to other frequency point priority information.
  • the corresponding network Therefore, the first frequency priority information does not affect the process and service of the UE in the next high-speed train in the high-speed rail private network.
  • the method specifically includes:
  • the core network control plane node device After determining that the UE is the first type of UE, the core network control plane node device sends the indication information to the base station device serving the UE in the first communication network. Correspondingly, the base station device serving the UE in the first communication network receives the indication information sent by the core network control plane node device.
  • the indication information includes, but is not limited to, the first SPID value described in FIG.
  • S202b1 may specifically include:
  • the core network control plane node device sends a downlink NAS direct transmission message to the private network base station, where the downlink NAS direct transmission message carries the indication information.
  • the core network control plane node device receives the mobility management area update request message (for example, the TAU request message) sent by the UE, the downlink NAS direct transmission message may further include any one of the following: a mobility management area update accept message or a mobile The sexual management area updates the rejection message.
  • the core network control plane node device provides the indication information to the private network base station through the downlink NAS direct transmission message, refer to the description in S202a3, and details are not described herein again.
  • S202b1 may include:
  • the core network control plane node device sends an initial context setup request message to the private network base station, where the initial context setup request message is used to indicate that the private network base station establishes the context of the user, the initial The context establishment request message carries the indication information; or the core network control plane node device sends a UE context modification request message to the private network base station, where the context modification request message is used to the private network base station A change information of a user context is provided, and the context modification request message carries the indication information.
  • S202b1 may specifically include:
  • the core network control plane node device sends a context release instruction message (eg, an S1 interface context release instruction message) to the private network base station, where the context release instruction message carries the indication information.
  • a context release instruction message eg, an S1 interface context release instruction message
  • the description of how the core network control plane node device provides the indication information to the private network base station by using the context release command message may refer to the description of how the MME provides the first SPID value to the private network base station eNodeB through the context release command message in S202a3, and details are not described herein again.
  • the private network base station After receiving the indication information sent by the control device of the core network control plane, the private network base station triggers a redirection process or a handover procedure for the UE to enable the UE to access the public network.
  • the base station device 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 second communication network, The UE is redirected back to the second communication network.
  • the first message may be a radio resource control RRC connection release message.
  • the private network base station after receiving the downlink NAS direct transmission message that carries the indication information (for example, the first SPID value) sent by the core network control plane node device, the private network base station sends the RRC connection release message to the first type UE. To trigger the redirect process.
  • the RRC connection release message carries redirection information, and the redirection information includes frequency point information corresponding to the second communication network.
  • the downlink non-NAS direct transmission message further carries a NAS message, and before the private network base station sends an RRC connection release message to the UE, the public network eNodeB 330 may forward the NAS message to the The UE either discards directly.
  • the RRC connection release message carries redirection information, and the redirection information includes frequency point information corresponding to the second communication network.
  • the private network base station device may trigger a handover procedure of the UE to the second communication network according to the indication information.
  • the handover request (Handover Required) message is sent to the core network control plane node.
  • the device is configured to trigger a handover preparation process of the UE to the second communication network.
  • the handover request message carries the target second communication network related information (such as the target eNodeB ID and/or the target TAI), and the handover preparation process user notifies the target second communication network to prepare corresponding resources for the access of the UE.
  • the private network base station sends a handover command (Handover Command) to the UE to trigger a handover execution process of the UE to the target second communication network.
  • 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 accordingly.
  • Private 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, and the redirection information includes corresponding to the second communication network.
  • the frequency point information is used to redirect the UE back to the second communication network; or the private network base station triggers a handover procedure of the UE to the second communication network according to the received indication information.
  • the core network control plane node device transmits, to the base station device serving the UE in the first communication network, indication information indicating that the UE is the first type of UE, so that the base station device The first UE accesses the second communication network. Therefore, even if the UE accesses the high-speed rail private network due to an abnormal reason, the UE preferentially accesses the LTE public network, and finally achieves the effect of moving the public network UE out of the high-speed rail LTE private network, which ensures that the resources of the high-speed rail LTE private network are not It is occupied by the public network UE and improves the resource utilization rate of the high-speed rail LTE private network.
  • Figure 5 is a flow chart showing a communication method in accordance with a first embodiment of the present invention.
  • Figure 5 is performed by a core network control plane node device, such as an MME.
  • the MME may be a private network MME independently deployed by the second communication network, or the MME may also be the first communication network and the second communication.
  • the shared MME deployed by the network share that is, the high speed mobile tool communication network and the public network use the same MME.
  • the shared MME is configured to simultaneously provide control plane management services for the UEs in the first communication network and the UEs in the second communication network.
  • a UE used by a user riding a high-speed rail can access a high-speed rail private network in different areas.
  • 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.
  • 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.
  • the UE may 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.
  • the train station area such as a waiting room, aisle, platform, etc.
  • 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.
  • abnormal reasons such as abnormal terminal, poor private network coverage, etc.
  • the communication method includes:
  • the core network control plane node device receives a request message sent by the user equipment to access the second communication network.
  • the UE from the high-speed rail LTE private network requests to access the neighboring LTE public network due to an abnormal reason, and sends a tracking area update TAU request message or an attach request message to the MME.
  • the TAU request message may be sent after the UE in the idle state accesses the public network in the cell reselection manner, or may be sent after the connected UE accesses the public network in the handover mode.
  • the core network control plane node device determines, according to the request message, that the UE is not a first type UE.
  • the MME identifies that the UE accessing the public network is not the first type of UE according to the TAU request or the attach request message.
  • the core network control plane node device sends the indication information to the base station device, where the indication information is used to indicate that the UE is not the first type of UE, so that the base station device accesses the UE to the first communications network. For example, after the base station device receives the indication information, the UE is redirected or switched to the first communication network.
  • the description of how the base station device redirects or switches the UE to the first communication network according to the indication information is similar to the description in which the base station device in FIG. 4 redirects or switches the UE to the second communication network according to the indication information, and details are not described herein again.
  • step S504 the method further includes:
  • step S504 specifically includes:
  • the core network control plane node device sends the second SPID value to the base station device, so that after the base station device receives the second SPID value, the UE is redirected or switched to the a communication network; or,
  • the core network control plane node device sends the second SPID value to the base station device, where the second SPID value is used to indicate that the base station device sends second frequency point priority information to the UE, where The second 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 base station may obtain the corresponding second frequency point priority information by querying the configured mapping relationship, and send the second frequency point priority information to the UE.
  • the second frequency priority information corresponds to the priority group 1.
  • the frequency of the public network is 1900M
  • the priority level is 6
  • the frequency of the private network is The point is 2100M and the priority is 7.
  • the second 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.
  • the core network control plane node device determines that the UE is not the first type of UE, it sends indication information to the base station device, so that the base station accesses the UE.
  • the first communication network private network. Therefore, even if the UE used by the user riding the high-speed mobile tool accidentally accesses the public network due to an abnormal reason, the UE can quickly return to the high-speed rail private network, thereby improving the user experience of the user who rides the high-speed mobile tool in the first communication network.
  • the core network control plane node device may determine that the UE is not the first type UE by combining any one or any of the following manners.
  • the following is merely an example, but the present invention is not limited thereto, and it is also within the scope of the present invention to determine that the UE is not the first type of UE by other means.
  • the core network control plane node device may be a core network control plane node MME that is independently deployed for the public network, or may be an MME shared with the existing high-speed rail private network.
  • the private network base station is set up in the private network cell independent of the public network base station, and in general, the private network TA different from the public network TA needs to be divided, for example, the private network TA has a 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.
  • TAC dedicated tracking area code
  • 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.
  • the TAU process is initiated. For example, the UE sends a TAU request message to the core network control plane node device, where the TAU request message carries the recently accessed TAI (Last visited TAI) cell, and the TAC corresponding to the Last visited TAI cell is dedicated. Network TAC.
  • step S502 can include:
  • the core network control plane node device receives a mobility management area update request message, such as a TAU request message, sent by the UE.
  • the mobility management area update request message carries an original mobility management area code.
  • the core network control plane node device determines that the UE is not the first type of UE.
  • the MME adds identification information to the user context of the UE.
  • the identifier information is used to indicate that the UE is a first type of UE.
  • step S502 can include:
  • the core network control plane node device After receiving the access request message sent by the UE, the core network control plane node device acquires the user context of the UE.
  • the core network control plane node device determines that the UE is not a first type UE.
  • the prior art may use the handover mode to move out of the high-speed rail LTE private network.
  • step S502 can include:
  • the core network control plane node device receives an access request message sent by the UE.
  • the core network control plane node device determines whether the access request message is received after the UE switches from the first communication network to the second communication network, and if the access request message is received after the handover, The UE is a first type of UE; if the access request message is not received after the handover, the UE is not the first type of UE.
  • the core network control plane node device may also determine whether the UE is a first type UE by combining the foregoing S502a, S502b, and S502c.
  • the core network control plane node device determines that the UE is not the first type of UE, and includes:
  • the core network control plane node device When the UE sends a request message to access the second communication network, the core network control plane node device is configured according to the code of the mobility management area recently accessed by the UE included in the request message. Encoding of a mobility management area of a communication network, and the user context of the UE does not include identification information indicating that the UE is a first type of UE, and determining that the UE is not a first type of UE. For example, in the scenario of the high-speed rail LTE private network, the MME may determine that the old TAC in the TAU request message sent by the UE is the high-speed rail LTE private network TAC, and the user context of the UE does not include the identifier information of the public network UE. Not the first type of UE.
  • the core network control plane node device determines that the UE is not the first type of UE, and includes:
  • the core network control plane node device When the UE sends a request message to access the second communication network, the core network control plane node device according to the UE recently accessed the mobile terminal included in the request message
  • the coding of the mobility management area is an encoding of the mobility management area of the first communication network and the request message is not received after the UE switches from the first communication network to the second communication network, It is determined that the UE is not a first type of UE.
  • the MME may be the high-speed rail LTE private network TAC according to the TAU request message sent by the UE, and the TAU request is not sent by the UE after the handover, and the UE is determined not to be the first type.
  • the MME may be the high-speed rail LTE private network TAC according to the TAU request message sent by the UE, and the TAU request is not sent by the UE after the handover, and the UE is determined not to be the first type.
  • UE the MME may be the high-speed rail LTE private network
  • the core network control plane node device determines that the UE is not the first type of UE, and includes:
  • the core network control plane node device When the UE sends a request message to access the second communication network, the core network control plane node device is configured according to the code of the mobility management area recently accessed by the UE included in the request message. Encoding of a mobility management area of a communication network, and the user context of the UE does not include identification information indicating that the UE is a first type of UE and the request message is not in the UE from the first communication After the network is switched to the second communication network, it is determined that the UE is not the first type of UE.
  • the MME may be the high-speed rail LTE private network TAC according to the TAU request message sent by the UE, and the user context of the UE does not include the identifier information that the UE is the public network UE, and the The TAU request is not sent by the UE after the handover, and it is determined that the UE is not the first type of UE.
  • the present invention may also use the foregoing S502a, S502b, S502c or a combination thereof to determine that the UE is not the first type UE.
  • the UE is not the first type of UE, it is also necessary to consider whether the request message for accessing the second communication network is sent from the first area.
  • the first area can be set to be within X kilometers of the train station. It is determined that the UE is not the first type UE when the request message accessing the second communication network is sent from the first area and the determination conditions of S502a and S502b are satisfied.
  • the second area can be set to be Y kilometers away from the train station. It is determined that the UE is not the first type of UE when the request message accessing the second communication network is a condition that is sent from the second area and satisfies S502a and S502c.
  • the UE in combination with S502a, S502b and S502c determining that the UE is not the first type of UE, it is also necessary to consider whether the request message for accessing the second communication network is sent from the third area.
  • the first area can be set to be outside the range of Z kilometers from the train station.
  • the private network/shared core network control plane node device When the UE camps on the private network (that is, before accessing the high-speed rail public network), the private network/shared core network control plane node device first identifies that the UE is the second type UE after the UE accesses the private network, and the Identity information is stored in the user context.
  • the public network/shared core network control plane node device may determine that the UE is not the first type UE by obtaining a user context from the private network/shared core network control plane node device.
  • step S502 can include:
  • the first core network control plane node device (for example, the public network/shared MME) 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 device.
  • the second core network control plane node device may be a core network control device of the private network.
  • the second core network control plane node device is the core network device shared by the private network and the public network;
  • the first core network control plane node device determines, according to the identity information, that the UE is not a first type UE.
  • the shared core network control plane node device has identified the UE when the UE resides in the private network (that is, before accessing the public network) It is a second type of UE, and records a mapping relationship between the UE identity and the second type of UE.
  • 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).
  • IMI international mobile subscriber identity
  • GUTI globally unique temporary identity
  • the core network control plane node device can search for the internal record through the identity identifier reported by the UE (for example, IMSI or GUTI). It is determined that the UE is not the first type of UE.
  • step S502 can include:
  • the first core network control plane node device receives the identity identifier reported by the UE, and determines that the UE is not the first type UE according to the identity identifier and the mapping relationship.
  • the UE When the UE resides in the private network (that is, before accessing the public network), the UE has been identified as the second type UE by the private network control plane node device or the shared core network control plane node device, and is specifically The network core network control plane node device or the shared core network control plane node device sends a special identifier.
  • the dedicated identifier may be a dedicated GUTI
  • the specific private network core network control plane node device or the shared core network control plane node device may send a dedicated GUTI to the UE 310 through the GUTI re-allocation message, where the dedicated GUTI includes dedicated mobility management.
  • Entity coding (English: mobility management entity code; referred to as: MMEC).
  • step S502 can include:
  • 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 sends the UE to the UE, and the dedicated identifier is used to indicate that the UE is a second type of UE.
  • the second core network control plane node device may be a core network control device of the private 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 not a first type UE.
  • the core network control plane node device can also know that the UE is not the first type UE by the notification of the public network base station eNodeB.
  • 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 The preset value, the public network base station determines that the UE is not the first type of UE, and sends notification information to the core network control plane node device to notify the core network control plane node device that the UE is not the first type UE.
  • step S502 can include:
  • 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 not a first type UE;
  • the first core network control plane node device determines, according to the notification message, that the UE is not a first type UE.
  • the public network base station determines that the UE is not the first type of UE, and may be used in other scenarios or uses according to the speed measurement of the UE, and is not limited to the description in this embodiment.
  • the core network control plane node device may also determine that the frequency of the TAU process or the frequency of the service ENB change in the connected state is higher than a preset value after the UE accesses the public network, and the UE is not the first type of UE. .
  • step S502 may include any of the following:
  • the core network control plane node device determines that the UE is not the first type UE.
  • the core network control plane node device determines The UE is not the first type of UE.
  • the information about the eNodeB is configured in the node device of the core network control plane, 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.
  • the core network control plane node device determines UE is not the first class Type UE.
  • the information about the eNodeB is configured in the node device of the core network control plane, and is used to determine whether an eNodeB is a public network eNodeB that is close to the high-speed rail private network.
  • the second SPID value is allocated to the UE.
  • FIG. 6 is a block diagram showing the design of a core network control plane node device 600 involved in the above embodiment.
  • the core network may be an EPC network, and the core network control plane node device may be an MME.
  • the core network control plane node device includes: a controller/processor 602 for controlling and managing actions of the core network control plane node device, and performing various functions to support the UE communication service.
  • the controller/processor 602 is configured to support the core network control plane node device to perform the processes 200-202 of FIG. 2, the processes S202a1-S202a2 of FIG. 3, the process S202b1 of FIG. 4, and the S502-S504 of FIG. And/or other processes for the techniques described herein.
  • the memory 601 is for storing program codes and data for the core network control plane node device.
  • Receiver/transmitter 603 is used to support communication with other network entities. For example, communication with the base station of Figure 3 or Figure 4.
  • FIG. 7 shows a possible structural diagram of the base station 700 involved in the foregoing embodiment.
  • the base station includes a transmitter/receiver 701, a controller/processor 702, a memory 703, and a communication unit 704.
  • the transmitter/receiver 701 is configured to support the base station to transmit and receive information with the UE in the foregoing embodiment, and to support radio communication between the UE and other UEs.
  • the controller/processor 702 performs various functions for communicating with the UE. On the uplink, the uplink signal from the UE is received via the antenna, coordinated by the receiver 701, and further processed by the controller/processor 702 to recover the service data and signaling information transmitted by the UE.
  • traffic data and signaling messages are processed by controller/processor 702 and mediate by transmitter 701 to generate downlink signals for transmission to the UE via the antenna.
  • the controller/processor 702 also performs the processes involved in the base station of Figures 3 through 4 and/or other processes for the techniques described herein.
  • the memory 703 is used to store program codes and data of the base station.
  • the communication unit 704 is configured to support the base station to communicate with other network entities. For example, it is used to support communication between the base station and the MME shown in FIG. 3/FIG.
  • Figure 7 only shows a simplified design of the base station.
  • the base station may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the present invention are within the scope of the present invention.
  • FIG. 8 shows a communication system according to an embodiment of the present invention, including the above-mentioned core network control plane node device 600 and base station 700, which are not described herein again.
  • 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).
  • 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.
  • RAU Routing Area Update
  • LAU Location Area Update

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Abstract

本发明实施例提供一种通信方法、核心网控制面节点设备、基站及通信系统。方法包括：核心网控制面节点设备确定在为乘坐高速移动工具的用户提供通信服务的专网中的UE为未乘坐高速移动工具的用户所使用的UE，则向该网络中的基站设备发送指示信息，以使该基站设备将所述UE接入其他通信网络。本发明实施例保证了高铁专网网络的资源不被公网UE占用，提升了高铁专网网络的资源利用率。

Description

通信方法、核心网控制面节点设备和基站
本申请要求于2015年03月09日提交中国专利局、申请号为PCT/CN2015/073882、发明名称为“控制用户设备接入高速移动工具通信网络的方法”的PCT专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通讯技术领域，具体涉及一种通信方法、核心网控制面节点设备和基站。
背景技术
高速移动工具在我国以及全球范围内发展迅速。例如，高速移动工具包括高速铁路火车(以下简称“高铁”)、磁悬浮列车、地铁等。以高铁为例，高铁运营里程已达到3万公里以上并且呈快速增长的趋势。伴随着高端人群大规模、长时间乘坐高速移动工具频繁流动的情况以及高速移动工具本身信息化建设的需求，高速移动工具的通信需求日益强烈。
然而，高速移动工具通信不同于常规的室内和室外移动通信场景，由于列车运行速度快，车体穿透损耗大，场景地形复杂多变等因数，使得现有的公网并不适于为乘坐高速移动工具的用户提供服务。因此，建设一个专门为高速移动用户提供服务的网络的需求日渐突出。此处的“公网”是指区别于上述专用网络的一般无线蜂窝通信网络。该专用网络与公网可以是不同的公用陆地移动网(英文：public land mobile network，简称：PLMN)；或者，也可以是同一个PLMN下两类网络区域的划分，两者在空间上可以有重叠，但使用不同的接入频点。例如，目前已经有设备商和运营商开始规划和部署这样的高铁专用无线网络(以下简称“高铁专网”)。高铁专网覆盖高铁行进途中以及高铁火车站的站台附近。高铁火车站区域的小区部署如图1A所示。高铁火车站的候车室102、进出站通道103以及站台104以及小区106都规划为属于高铁专网覆盖下的专网小区。火车站外的火车站广场规划为 属于公网小区105。目前高铁网络规划将专网小区和公网小区独立部署。针对铁路线型覆盖的特点，高铁专网采取小区级联连续覆盖的方案，如图1B所示。在图1B的例子中，高铁的轨道区域被级联的专网小区111连续覆盖，同时公网小区115也覆盖了该高铁的轨道区域。
公网和高铁专网采用如下协同原则：
(1)在高铁线路大部分区域(如，车站附近区域外的高铁行进途中)，高铁专网小区和周边公网小区间不互配邻区关系。也就是说，专网小区只配专网下的级联小区作为邻区，不配置公网作为邻区；公网小区也不配置专网小区作为邻区；以防止公网用户或专网用户轻易地重选或切换进入对方小区。
(2)在火车站的站台附近配置公网小区和专网小区为相互邻区关系，以让乘坐高铁的用户所使用的UE从公网小区(如图1A中的公网小区105)进入专网小区(如图1A中的公网小区101)或从专网小区进入公网小区。
当前，在高铁车站附近区域，可能会出现大量公网普通用户接入专网小区并长期侵占专网资源问题。另外，由于高铁专网小区和周边公网小区间无相互邻区关系在高速移动工具行进途中，当UE因异常原因脱离高速移动工具通信网络而接入公网后，现有技术无法使得该UE后续能快速地回到高速移动工具通信网络，影响了乘坐高速移动工具的用户的用户体验。
发明内容
本文描述了一种通信方法，核心网控制面节点设备及基站，以提高高铁专网的资源利用率。
在本发明中，第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络，第一类型UE为第一通信网络中未乘坐高速移动工具的用户所使用的UE。可选的，第一通信网络和第二通信网络分别是不同的公用陆地移动网PLMN，或，第一通信网络和第二通信网络是同一个PLMN，但使用不同的接入频点。
一方面，本申请的实施例提供了一种通信方法。该方法包括：核心网控制面节点设备(如MME)确定第一通信网络中的用户设备UE 是第一类型UE，则向第一通信网络的基站设备发送指示信息，该指示信息用于指示UE为第一类型UE，以使基站设备将UE接入第二通信网络。因此，保证了第一通信网络的资源不被第一类型UE(即公网UE)所占用，提升了第一通信网络的资源利用率。
在一种可能的设计中，指示信息为第一无线接入制式/频点优先级用户文件标识SPID值，由核心网控制面节点设备为UE分配，用于指示UE为第一类型UE。基站收到第一SPID值后，触发UE离开第一通信网络。例如，基站可通过根据第一SPID值向UE发送频点优先级信息，该频点优先级信息用于指示UE优先选择第二通信网络的频点进行驻留。或者，基站设备也可根据第一SPID值，触发UE至第二通信网络的切换流程，将UE接入第二通信网络；或，向UE发送携带重定向信息的第一消息，该重定向信息包括与第二通信网络对应的频点信息，将UE接入第二通信网络。
在一种可能的设计中，核心网控制面节点设备可根据UE在第一指定区域(如高铁火车站附近N公里内某专网小区或整个高铁专网沿线某专网小区)内的驻留时间超过第一预设值，确定UE是第一类型UE。可选的，若核心网控制面节点设备在确定第一通信网络中的UE是第一类型UE之前确定UE通过特定区域接入了第一通信网络，则可根据UE在第一指定区域内的驻留时间超过第二预设值，确定UE是第一类型UE。其中，第二预设值大于第一预设值。
在一种可能的设计中，若在预设时间段内UE所在的移动性管理区域(例如，跟踪区TA、路由区RA、位置区LA、基站覆盖区域或小区。)的变换次数小于第三预设值，则核心网控制面节点设备可确定UE是第一类型UE。
在一种可能的设计中，核心网控制面节点设备还可在UE的用户上下文中增加用于表示UE是第一类型UE的标识信息。进一步的，若接收到UE在第二指定区域(如，第二指定区域包括所述第一通信网络的移动性管理区域)的接入请求，则核心网控制面节点设备清除标识信息。
另一方面，本申请的实施例还提供了一种通信方法。该方法包括： 核心网控制面节点设备接收UE发送的接入第二通信网络的请求消息，根据请求消息确定UE不是第一类型UE，并向第二通信网络的基站设备发送用于指示UE不是第一类型UE的指示信息。第二通信网络中的基站设备接收到指示信息后，将UE接入第一通信网络。
因此，即使乘坐高速移动工具的用户所使用的UE因异常原因误接入公网，也能快速地重新回到高铁专网，提升了第一通信网络中乘坐高速移动工具的用户的用户体验。
可选的，请求消息包括移动性管理区域更新请求消息或附着请求消息。
在一种可能的设计中，指示信息为第二SPID值，是核心网控制面节点设备在确定UE为不是第一类型UE后为UE分配的。
在一种可能的设计中，请求消息中包含UE最近访问的移动性管理区域的编码。核心网控制面节点设备根据请求消息中包含的UE最近访问的移动性管理区域的编码是第一通信网络的移动性管理区域的编码，确定所述UE不是第一类型UE。
在一种可能的设计中，核心网控制面节点设备根据所述UE的用户上下文中未包含用于表示所述UE为第一类型UE的标识信息，确定所述UE不是第一类型UE。
在一种可能的设计中，核心网控制面节点设备根据请求消息不是在UE从第一通信网络切换至第二通信网络后收到的，确定UE不是第一类型UE。
在一种可能的设计中，基站设备可通过如下方式任一，根据指示信息UE接入所述第一通信网络：
基站设备触发UE至第一通信网络的切换流程，将UE接入第一通信网络；或，向UE发送携带重定向信息的第二消息(如，RRC连接释放消息)，该重定向信息包括与第一通信网络对应的频点信息，将UE接入所述第一通信网络；或，基站设备根据第二SPID值向UE发送频点优先级信息，该频点优先级信息用于指示UE优先选择第一通信网络的频点进行驻留。
又一方面，本发明实施例提供了一种核心网控制面节点设备。该 核心网控制面节点设备可以是核心网络中的网络实体，例如移动性管理实体MME。该网络实体用于支持和基站配合实现上述方法设计中的方案。
另一方面，本发明实施例提供了一种基站，该基站具有实现上述方法实际中基站行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，基站的结构中包括处理器和发射器，所述处理器被配置为支持基站执行上述方法中相应的功能。所述发射器用于支持基站与UE之间的通信，向UE发送上述方法中所涉及的信息或者指令。所述基站还可以包括存储器，所述存储器用于与处理器耦合，其保存基站必要的程序指令和数据。
又一方面，本发明实施例提供了一种通信系统，该系统包括上述方面所述的基站和UE；或者，该系统包括上述方面所述的基站和网核心网控制面节点设备；或者，该系统包括上述方面所述的基站，UE和核心网控制面节点设备。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述基站所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述核心网控制面节点设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
相较于现有技术，本发明提供的方案可以保证高铁专网的资源不被公网UE占用，从而提升了高铁专网的资源利用率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通 技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1A所示为高铁专网和公网在高铁火车站区域的小区部署的示意图；
图1B所示为高铁专网和公网在高铁列车轨道区域小区部署的示意图；
图2所示为根据本发明一个实施例的通信方法的流程图；
图3所示为根据本发明一个实施例的向基站设备发送指示信息的信令交互示意图；
图4所示为根据本发明另一个实施例的向基站设备发送指示信息的另一信令交互示意图；
图5所示为根据本发明另一个实施例的通信方法的流程图；
图6所示为根据本发明一个实施例的核心网控制面节点设备的方块图；
图7所示为根据本发明一个实施例的基站设备的方块图；及
图8示出了根据本发明实施例的通信系统的示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明用于控制UE接入高速移动工具通信网络，使得非乘坐高速移动工具的用户的UE在行进途中，即使因异常原因接入高速移动工具通信网络，也可被从高速移动工具通信网络中剔除而重新回到公网。其中，高速移动工具通信网络是指为乘坐高速移动工具(如，高铁、轻轨、地铁)的用户提供通信服务的专用网络，该专用网络和公 网可以是不同的PLMN；或者，也可以是同一个PLMN下两类网络区域的划分，两者在空间上可以有重叠，但使用不同的接入频点(例如中国移动的1900MHz、2100MHz)。为便于描述，将高速移动工具通信网络也称为第一通信网络，将除第一通信网络之外的通信网络称为第二通信网络，例如，第二通信网络为公网。此外，将非乘坐高速移动工具的用户(即公网用户)所使用的UE简称为第一类型UE。除第一类型外的UE即为第二类型UE。例如，第二类型UE包括乘坐高速移动工具的用户所使用的UE。
本发明适用的第一通信网络包括但不限于长期演进(英文：Long Term Evolution，简称：LTE)网络、全球移动通讯系统(英文：Global System of Mobile communication，简称：GSM)、通用移动通讯系统(英文：Universal Mobile Telecommunications System，简称：UMTS)网络或下一代无线通信网络。在以上任一网络的场景下，通信系统至少包括核心网控制面节点设备、UE以及基站设备。在LTE网络下，核心网控制面节点设备包括但不限于移动性管理实体(英文：Mobility Management Entity，简称：MME)，基站设备包括但不限于演进型网络基站(英文：E-UTRAN NodeB，简称：eNodeB)。在GSM网络或UMTS网络下，核心网控制面节点设备包括但不限于通用分组无线服务(英文：General Packet Radio Service，简称：GPRS)业务支撑节点(英文：Serving GPRS Support Node，简称：SGSN)或移动交换中心(英文：Mobile Switching Center，简称：MSC)，基站设备包括但不限于基站控制器(英文：base station controller，简称：BSC)或无线网络控制器(英文：radio network controller，简称：RNC)。在本发明中，第一通信网络和第二通信网络分别部署不同的接入网设备(如，eNodeB)。
以下将以高速移动工具为高铁，第一通信网络为LTE高铁专网为例进行描述。然而，本发明并不局限于此，高速移动工具包括但不限于高铁、磁悬浮、地铁，且本发明同样适用于GSM网络、UMTS网络或下一代无线通信系统。
例如，高铁专网覆盖的场景可分为高铁火车站以及高铁行进途中 这两种。高铁火车站被专网小区所覆盖，高铁行进途中也被级联的专网小区覆盖。此外，高铁火车站以及行进路线还都至少被高铁专网附近的公网小区部分覆盖。
图2所示为根据本发明第一个实施例的通信方法的流程示意图。图2由核心网控制面节点设备(如MME)来执行。该MME可为第一通信网络独立部署的专网MME，或者，该MME也可为第一通信网络和第二通信网络共享部署的共享MME，即，高速移动工具通信网络和公网使用同一个MME。当MME被高速移动工具通信网络和公网共享时，共享MME用于同时为第一通信网络中的UE和第二通信网络中的UE提供控制面管理服务。
在本发明的实施例中，第一类型UE可能会接入第一通信网络，即高铁专网。例如，第一类型UE接入第一通信网络的原因为周边公网的覆盖较弱，第一类型UE在开机附着或小区重选时选择了信号相对较好的高铁专网进行接入。
如图2所示，该方法包括：
步骤S200，核心网控制面节点设备确定第一通信网络中的UE是第一类型UE。例如，MME识别驻留于高铁LTE专网中某UE实际上是并未乘坐高铁的用户所使用的UE，即属于第一类型UE。
步骤S202，核心网控制面节点设备向第一通信网络中服务该UE的基站设备发送指示信息，该指示信息用于指示所述UE为第一类型UE，以使所述基站设备将所述第一UE接入第二通信网络。
通过本发明的方案，在核心网控制面节点设备确定接入第一通信网络的UE为第一类型UE后，向服务该UE的基站设备下发用于指示所述UE为第一类型UE的指示信息，使得基站设备将该UE迁出第一通信网络。因此，保证了第一通信网络的资源不被第一类型UE(即公网UE)所占用，提升了第一通信网络的资源利用率。
例如，步骤S200可包括：
S200a,核心网控制面节点设备根据所述UE在第一指定区域内驻留时间超过第一预设值，确定所述UE是第一类型UE。例如，第一指定区域是指定的跟踪区(英文：Tracking Area，简称TA)、基站覆 盖区或小区。所述第一指定区域可以是高铁LTE专网的上述类型区域，也可以是周边公网中的上述类型区域。所述第一指定区域可以根据实际网络环境进行设置，例如，可以将高铁火车站附近N公里专网小区或整个高铁专网沿线一个或多个专网小区设置成第一指定区域。
例如，核心网控制面节点设备可根据UE在高铁LTE专网中第一指定区域内的一个或多个eNodeB下驻留的时间超过预设值(如60分钟)且期间内该UE并未接入指定范围以外的eNodeB，确定UE是第一类型UE。
又如，核心网控制面节点设备可根据UE在高铁LTE专网中第一指定区域内的eNodeB和周边公网的eNodeB下驻留的时间超过预设值且期间内该UE并未接入指定范围以外的eNodeB，确定UE是第一类型UE。
进一步，在本发明的另一实施例中，若所述核心网控制面节点设备在确定该UE是第一类型UE之前已经确定该UE是乘坐高铁的用户所使用的UE或者具备高铁专网UE的某些特性，则核心网控制面节点根据UE在第一指定区域驻留时间超过第二预设值(如90分钟)，确定所述UE是第一类型UE。第二预设值大于第一预设值。举例来说，当该UE已经从特定区域(如火车站室分小区)接入高铁LTE专用网络，可认为该UE具备高铁专网UE的特性。
S200b，核心网控制面节点设备根据所述UE在预设时间段内移动性管理区域变化的次数小于第三预设值，确定UE是第一类型UE。
所述移动性管理区域可以是跟踪区TA或基站覆盖区或小区等。此种方式并未限定于指定区域，可以适用于整个高铁LTE专用网络。
例如，核心网控制面节点设备可根据UE在预设时间段内(如90分钟)移动性管理区域变化的次数小于第三预设值(如3次)，确定UE是第一类型UE。S200c,在第一核心网控制面节点确定UE是第一类型UE后，该第一核心网控制面节点在所述UE的用户上下文中增加用于指示所述UE是第一类型UE的标识信息。
当UE的服务核心网控制面节点从第一核心网控制面节点改变为第二核心网控制面节点时，第一核心网控制面节点会将所述标识信息 与所述用户上下文一起传递给第二核心网控制面节点，第二核心网控制面节点即可根据所述标识信息识别所述UE是第一类型UE。
可选的，在本发明的另一实施例中，在核心网控制面节点在所述UE的上下文中增加了所述用于标识UE是第一类型UE的标识信息之后，若UE从第二指定区域接入高铁LTE专用网络，则核心网控制面节点清除所述标识信息。例如，第二指定区域是火车站区域高铁LTE专网的TA、eNodeB覆盖的区域或小区，标识信息的清除用于避免用户在需要乘坐高铁时因先前的标识信息而被误判为公网用户。又如，第二指定区域可以是第一指定区域之外(如火车站N公里以外)的高铁LTE专网的TA、eNodeB覆盖的区域或小区。若UE在第一指定区域被识别为第一类型UE后又接入第二指定区域，则说明该UE具备移动性，且移动性达到某种程度，此时核心网控制面节点清除所述标识信息能够刷新对UE类型的判断结果。
通过上述S200a至S200c中任一方式或任几种方式的结合，核心网控制面节点设备即可确定第一通信网络中的UE是第一类型UE。
此外，在核心网控制面节点确定UE是第一类型UE后，在所述UE的用户上下文中增加用于指示所述UE是第一类型UE的标识信息的操作并不仅限于上述步骤S200c。通过其他方式确定UE为第一类型UE后，也可在所述UE的用户上下文中增加用于指示所述UE是第一类型UE的标识信息。
可选的，步骤S202可利用接入制式/频点优先级用户文件标识(英文Subscriber Profile ID for RAT/Frequency Priority，简称：SPID)或切换或重定向的方式来实现。
图3所示为利用SPID来实现步骤S202的示意图，具体包括：
S202a1，核心网控制面节点设备为所述第一类型UE分配第一SPID值。
所述第一SPID值用于指示所述基站设备向所述UE发送第一频点优先级信息，其中，所述第一频点优先级信息用于指示所述UE优先选择所述第二通信网络的频点进行驻留，例如，所述第一频点优先级信息用于指示LTE公网对应的频点优先级高高于上述第一通信网络， 从而使得所述基站设备将所述UE接入第二通信网络。例如，核心网控制面节点设备为该UE分配SPID＝4。
S202a2,核心网控制面节点设备将所述第一SPID值发送给在第一通信网络中服务该UE的基站设备。相应地，第一通信网络中服务该UE的基站设备接收该核心网控制面节点设备发送的所述第一SPID值。
例如，MME向专网eNodeB发送下行非接入层(英文：non-access stratum，简称：NAS)直传消息，所述下行NAS直传消息携带所述第一SPID值。若所述MME接收UE发送的移动性管理区域更新请求消息(如，TAU请求消息)，所述下行NAS直传消息中还可以包括以下任一：移动性管理区域更新接受消息或移动性管理区域更新拒绝消息。
以LTE网络为例，UE向MME发送TAU请求消息后，MME可先接受该TAU请求，将第一SPID值和TAU接受(accept)消息封装于下行NAS直传消息中发送给正在服务于所述第一类型UE的专网eNodeB。专网eNodeB解析接收到的下行NAS直传消息,以获取第一SPID值和TAU accept消息，专网eNodeB可以将解析得到的TAU accept消息转发给UE或直接丢弃。或者，MME可先拒绝该TAU请求，将第一SPID值和携带某原因值的TAU拒绝(reject)消息封装于下行NAS直传消息中发给正在服务于所述UE的专网eNodeB。例如，所述TAU reject消息中携带的原因值具体可以是跟踪区不允许(Tracking area not allowed)或者跟踪区内无合适小区(No suitable cells in tracking area)等。所述原因值用于指示所述第一类型UE发起的所述TAU流程不被允许，以避免所述UE再次向该专网TA发起TAU请求。专网eNodeB解析接收到的下行NAS直传消息，以获取第一SPID值和TAU reject消息，专网eNodeB可以将解析得到的TAU reject消息转发给UE310或直接丢弃。
或者，可选的，对于LTE网络，S202a2可包括：
MME向专网eNodeB发送初始上下文建立请求消息(initial context setup request)，所述初始上下文建立请求消息用于指示所述eNodeB建立所述用户的上下文，所述初始上下文建立请求消息携 带所述第一SPID值；或者，MME向专网eNodeB发送上下文修改请求消息(UE context modification request)，所述上下文修改请求消息用于向所述eNodeB提供用户上下文的改变信息，所述上下文修改请求消息携带所述第一SPID值。
或者，可选的，S202a2可包括：
MME向专网eNodeB发送上下文释放指令消息(如，S1接口上下文释放指令消息)，所述上下文释放指令消息携带所述第一SPID值。
例如，MME接收所述第一类型UE发起的TAU过程之后，可以接受或拒绝所述UE发起的TAU请求，待MME完成TAU处理并完成TAU accept/reject消息下发后，MME触发S1接口释放流程，以释放所述UE的信令面连接。MME向所述专网eNodeB发送携带第一SPID值的S1接口上下文释放指令(S1UE Context Release Command)消息，所述第一SPID值用于告知所述专网eNodeB所述UE是第一类型UE。
S202a3，专网eNodeB根据第一SPID值确定第一频点优先级信息，并据此向UE发送第一频点优先级信息。相应地，UE接收第一频点优先级信息。第一频点优先级信息用于指示所述UE优先选择所述第二通信网络的频点进行驻留，例如，优先接入高铁沿线周边的LTE公网。
其中，专网eNodeB中可预配置有不同的SPID值与各种频点优先级信息的映射关系。因此，当专网eNodeB收到所述第一SPID值后，可通过查询配置的映射关系得到相对应的第一频点优先级信息。例如，映射关系中可设置第一类型UE待返回的公网频点优先级最高。例如，eNodeB 330中可以维护一张如表1所示的映射关系表。
表1
Figure PCTCN2016073076-appb-000001
Figure PCTCN2016073076-appb-000002
如表1所示，当SPID等于4时，第一频点优先级信息对应优先组2，在优先组2中，公网的频点为1900M，优先级别为7，专网的频点为2100M，优先级别为6。这里假设优先级别的值越大，代表该对应网络的频点的优先级越高，即UE优先接入优先级别值大的网络的频点。因此，当SPID等于4时，第一频点优先级信息指示公网频点的优先级高于专网频点的优先级。
在专网基站根据第一SPID值确定第一频点优先级信息后，向UE发送第一频点优先级信息。
例如，所述基站向所述UE发送无线资源控制RRC连接释放(RRC connection release)消息，所述RRC连接释放消息中携带所述第一频点优先级信息。更具体地说，专网基站可以在收到核心网控制面节点发送的第一SPID值后，立即结束所述第一类型UE正在进行的业务(如TAU流程)，向所述UE发送携带第一频点优先级组信息的RRC连接释放消息，以释放所述UE与网络侧的信令连接。或者，专网基站在收到第一SPID值后，等待所述UE与网络侧完成当前正在进行的业务后，再释放UE与网络侧之间信令连接，如，向UE发送携带第一频点优先级组信息的RRC连接释放消息。
S202a4，UE根据第一频点优先级信息优先选择所述第二通信网络的频点进行驻留。
当UE接收到专网基站发送的第一频点优先级信息后且进入空闲态之后，根据所述第一频点优先级信息，优先选择公网对应的频点进行驻留。例如，若UE搜索到LTE公网中某小区的频点适合执行重选流程，则重选至该公网小区。
通过本发明的方案，在MME确定驻留于高铁LTE专网的UE为公网UE后，向服务该UE的专网eNodeB下发公网UE专用的第一SPID，以使专网eNodeB根据该第一SPID向该UE下发用于指示LTE公网对应的频点优先级较高的第一频点优先级信息，使得该UE优先接入LTE公网，最终达到将该公网UE迁出高铁LTE专网的效果，这保证了高铁LTE专网的资源不被公网UE所占用，提升了高铁LTE专网的资源 利用率。
可选的，第一频点优先级信息还包括定时器值。例如，该定时器值可以根据高铁路程、火车行驶的时间等因素设定。该定时器值用于指示第一频点优先级信息有效的持续时间。例如，定时器值设为一个小时，一个小时后，该第一频点优先级信息就失效。
因此，可选的，在步骤S202a4之前，该方法还包括：
UE判断定时器是否超时。当UE的定时器没有超时的情况下，UE执行上述步骤S202a4。在定时器超时后，则根据其他频点优先级信息接入优先级高的频点所对应的网络。
由于设置了第一频点优先级信息的定时器，在定时器超时后，该第一频点优先级信息失效，那么，UE就可根据其他频点优先级信息接入优先级高的频点所对应的网络。因此，第一频点优先级信息不会影响UE在下次乘坐高铁列车在高铁专网中的流程和业务。
可选的，当利用切换或重定向的方式来实现步骤S202时，如图4所示，具体包括：
S202b1，核心网控制面节点设备在确定UE为第一类型UE后，将指示信息发送给在第一通信网络中服务该UE的基站设备。相应地，第一通信网络中服务该UE的基站设备接收该核心网控制面节点设备发送的所述指示信息。指示信息包括但不限于图3中描述的第一SPID值。
可选的，S202b1可具体包括：
核心网控制面节点设备向所述专网基站发送下行NAS直传消息，所述下行NAS直传消息携带所述指示信息。若核心网控制面节点设备接收UE发送的移动性管理区域更新请求消息(如，TAU请求消息)，所述下行NAS直传消息中还可以包括以下任一：移动性管理区域更新接受消息或移动性管理区域更新拒绝消息。核心网控制面节点设备如何通过下行NAS直传消息向专网基站提供指示信息可参考S202a3中的描述，在此不再赘述。
或者，可选的，对于LTE网络，S202b1可包括：
核心网控制面节点设备向所述专网基站发送初始上下文建立请求消息(initial context setup request)，所述初始上下文建立请求消息用于指示所述专网基站建立所述用户的上下文，所述初始上下文建立请求消息携带所述指示信息；或者，核心网控制面节点设备向所述专网基站发送上下文修改请求消息(UE context modification request)，所述上下文修改请求消息用于向所述专网基站提供用户上下文的改变信息，所述上下文修改请求消息携带所述指示信息。
或者，S202b1可具体包括：
核心网控制面节点设备向所述专网基站发送上下文释放指令消息(如，S1接口上下文释放指令消息)，所述上下文释放指令消息携带所述指示信息。核心网控制面节点设备如何通过上下文释放指令消息向专网基站提供指示信息可参考S202a3中MME如何通过上下文释放指令消息向专网基站eNodeB提供第一SPID值的描述，在此不再赘述。
S202b2,专网基站接收核心网控制面节点设备发送的指示信息后，针对UE触发重定向流程或切换流程,以使UE接入公网。
可选的，基站设备根据所述指示信息向所述UE发送第一消息，所述第一消息携带重定向信息，所述重定向信息包括与所述第二通信网络对应的频点信息，以使所述UE重定向回所述第二通信网络。第一消息可以是无线资源控制RRC连接释放(RRC connection release)消息。
举例来说，当专网基站接收核心网控制面节点设备发送的携带指示信息(如，第一SPID值)的下行NAS直传消息后，发送所述RRC连接释放消息至所述第一类型UE，以触发重定向流程。其中，RRC连接释放消息携带重定向信息，所述重定向信息包括与所述第二通信网络对应的频点信息。可选的，所述下行非NAS直传消息还携带NAS消息，在所述专网基站向所述UE发送RRC连接释放消息前，所述公网eNodeB 330可将所述NAS消息转发至所述UE或者直接丢弃。
或者，当专网基站接收核心网控制面节点设备发送的携带指示信息的S1接口上下文释放指令消息后，发送所述RRC连接释放消息至 所述第一类型UE，以触发重定向流程。其中，RRC连接释放消息携带重定向信息，所述重定向信息包括与所述第二通信网络对应的频点信息。
或者,专网基站设备可根据所述指示信息触发所述UE至所述第二通信网络的切换流程。
举例来说，当专网基站接收核心网控制面节点设备发送的携带指示信息(如，第一SPID值)的下行NAS直传消息后，发送切换请求(Handover Required)消息至核心网控制面节点设备，以触发UE至第二通信网络的切换准备流程。其中，切换请求消息携带目标第二通信网络相关信息(如target eNodeB ID和/或target TAI)，所述切换准备流程用户通知目标第二通信网络为UE的接入准备相应的资源。待切换准备流程结束后，专网基站向UE发送切换命令(Handover Command),以触发UE至目标第二通信网络的切换执行流程。
根据本发明的方案，当第一类型UE因异常原因接入高铁专网后，核心网控制面节点设备MME可通过多种方式识别该UE为第一类型UE，并据此将指示信息发送至专网基站。专网基站根据接收到的指示信息向所述UE发送第一消息(如，RRC连接释放消息)，所述第一消息携带重定向信息，所述重定向信息包括与所述第二通信网络对应的频点信息，以使所述UE重定向回所述第二通信网络；或者专网基站根据接收到的指示信息触发所述UE至第二通信网络的切换流程。
通过以上任一方式，核心网控制面节点设备即向第一通信网络中服务该UE的基站设备传递了用于指示所述UE为第一类型UE的指示信息，以使所述基站设备将所述第一UE接入第二通信网络。因此，即使UE因异常原因误接入高铁专网，使得该UE优先接入LTE公网，最终达到将该公网UE迁出高铁LTE专网的效果，这保证了高铁LTE专网的资源不被公网UE所占用，提升了高铁LTE专网的资源利用率。
图5所示为根据本发明第一个实施例的通信方法流程图。图5由核心网控制面节点设备(如MME)来执行。该MME可为第二通信网络独立部署的专网MME，或者，该MME也可为第一通信网络和第二通信 网络共享部署的共享MME，即，高速移动工具通信网络和公网使用同一个MME。当MME被高速移动工具通信网络和公网共享时，共享MME用于同时为第一通信网络中的UE和第二通信网络中的UE提供控制面管理服务。
在本发明的实施例中，乘坐高铁的用户使用的UE可在不同区域接入高铁专网。举例来说，该UE可在火车站区域接入高铁专网，或者，UE可在轨道区域接入高铁专网。例如，当用户进入高铁火车站区域，如进入候车室候车或者经过道走上站台，因其进入高铁专网信号的覆盖区域，绝大多数开机UE会接入高铁专网。
UE接入高铁专网的方式可能有多种，例如：对于处于空闲态的UE，因UE从公网小区进入高铁专网小区，从而触发小区重选流程接入高铁专网。对于处于连接态的UE，可经LTE切换流程而接入高铁专网。而对于进入火车站区域(如候车室，过道，站台等)才开机的UE，可通过在火车站区域专网小区下发起附着(attach)流程接入高铁专网。
在该UE在车站区域接入高铁专网后，可能因异常原因(如终端异常、专网覆盖差等)脱离高铁专网而接入该专网周边的公网。例如，当高铁列车运行到专网覆盖信号质量很差或无专网覆盖区域时，该UE会搜索到周边公网频点并选择一个合适的公网小区进行驻留。
如图5所示，通信方法包括：
S500,核心网控制面节点设备接收用户设备发送的接入第二通信网络的请求消息。
例如，来自高铁LTE专网的UE因异常原因请求接入周边LTE公网，而向MME发送跟踪区更新TAU请求消息或附着请求消息等。其中TAU请求消息可能是空闲态UE以小区重选方式接入公网后发送的，也可能是连接态UE以切换方式接入公网后发送的。
S502，核心网控制面节点设备根据所述请求消息确定所述UE不是第一类型UE。
例如，MME根据TAU请求或附着请求消息识别接入公网的UE不是第一类型UE。
S504，核心网控制面节点设备向基站设备发送指示信息，该指示信息用于指示所述UE不是第一类型UE，以使所述基站设备将所述UE接入所述第一通信网络。例如，当所述基站设备收到所述指示信息后，将所述UE重定向或者切换至所述第一通信网络。
基站设备如何根据指示信息将UE重定向或切换至第一通信网络类似于图4中基站设备根据指示信息将UE重定向或切换至第二通信网络的描述，此处不再赘述。
可选的，在步骤S504前，该方法进一步包括：
S503，在核心网控制面节点设备(如，MME)确定UE不是第一类型UE后，为该UE分配第二SPID值。例如，MME为UE分配SPID＝5。
相应的，则步骤S504具体包括：
所述核心网控制面节点设备向所述基站设备发送所述第二SPID值，以使当所述基站设备收到所述第二SPID值后，将所述UE重定向或者切换至所述第一通信网络；或，
所述核心网控制面节点设备向所述基站设备发送所述第二SPID值，所述第二SPID值用于指示所述基站设备向所述UE发送第二频点优先级信息，其中，所述第二频点优先级信息用于指示所述UE优先选择所述第一通信网络的频点进行驻留，即，优先接入高铁专网。
核心网控制面节点设备如何向所述基站设备发送所述第二SPID值可采用类似于图3中核心网控制面节点设备向所述基站设备发送所述第一SPID值的方式S202a3，此处不再赘述。
基站收到第二SPID值后，可通过查询配置的映射关系得到相对应的第二频点优先级信息，向所述UE发送第二频点优先级信息。举例来说，根据上述表1，当SPID等于5时，第二频点优先级信息对应优先组1，在优先组1中，公网的频点为1900M，优先级别为6，专网的频点为2100M，优先级别为7。第二频点优先级信息指示专网频点的优先级高于公网频点的优先级。之后的操作可参考图3中S202a3和S202a4的描述，此处不再赘述。
通过本发明的方案，在核心网控制面节点设备确定UE不是第一类型UE后，向基站设备发送指示信息，以使所述基站将所述UE接入 第一通信网络专网。因此，即使乘坐高速移动工具的用户所使用的UE因异常原因误接入公网，也能快速地重新回到高铁专网，提升了第一通信网络中乘坐高速移动工具的用户的用户体验。
可选的，核心网控制面节点设备可通过以下方式任一或任意几种方式的结合来确定UE不是第一类型UE。以下仅为举例说明，然而本发明并不限于此，通过其他方式确定UE不是第一类型UE也在本发明的保护范围内。
(1)核心网控制面节点设备可以是为公网独立部署的核心网控制面节点MME，也可以是与现有的高铁专网共享部署的MME。另外，由于专网小区中架设独立于公网基站的专网基站，并且一般情况下，需要划分区别于公网TA的专网TA，例如专网TA含有专用的跟踪区编码(英文：Tracking Area Code，简称：TAC)。因此，通过TAC即可区分TA为专网TA还是公网TA。
此外，因专网TA和公网TA属于不同种类的TA，一般会被规划属于不同的TA列表(TA list)。当UE从原专网TA接入公网TA时，会发起TAU流程。例如，UE向核心网控制面节点设备发送TAU request消息，其中TAU request消息携带最近访问的TAI(最近访问的跟踪区标识，Last visited TAI)信元，该Last visited TAI信元的TAC对应为专网TAC。
因此，步骤S502可包括：
S502a，核心网控制面节点设备接收UE发送的移动性管理区域更新请求消息，如TAU请求消息。所述移动性管理区域更新请求消息携带原移动性管理区域编码。
当所述原移动性管理区域编码(如old TAC)为所述第一通信网络的移动性管理区域编码时，所述核心网控制面节点设备确定所述UE不是第一类型UE。
(2)根据图2的描述，驻留于高铁LTE专网的UE若被识别出是第一类型UE(即对应公网用户)，则MME在所述UE的用户上下文中增加标识信息，所述标识信息用于表示所述UE是第一类型UE。
因此，步骤S502可包括：
S502b，核心网控制面节点设备接收UE发送的接入请求消息后，获取所述UE的用户上下文。
若所述UE的用户上下文中未包含用于标识所述UE是第一类型UE的信息，则所述核心网控制面节点设备确定所述UE不是第一类型UE。
(3)对于驻留于高铁LTE专网且被识别出是第一类型UE(即公网用户)的连接态UE，现有技术中可能采用切换的方式将其迁出高铁LTE专网。
因此，步骤S502可包括：
S502c,核心网控制面节点设备接收UE发送的接入请求消息。所述核心网控制面节点设备判断上述接入请求消息是否是在所述UE从第一通信网络切换至第二通信网络后接收到的，若上述接入请求消息是在切换后接收到的，则所述UE为第一类型UE；若上述接入请求消息不是在切换后接收到的，则所述UE不是第一类型UE。
(4)核心网控制面节点设备也可结合上述S502a、S502b、S502c来确定所述UE是否为第一类型UE。
例如，在本发明的一个实施例中，结合S502a和S502b,核心网控制面节点设备确定UE不是第一类型UE，包括：
当所述UE发送接入所述第二通信网络时请求消息时，所述核心网控制面节点设备根据所述请求消息中包含的所述UE最近访问的移动性管理区域的编码是所述第一通信网络的移动性管理区域的编码且所述UE的用户上下文中未包含用于表示所述UE为第一类型UE的标识信息，确定所述UE不是第一类型UE。例如，具体到高铁LTE专网场景，MME可根据UE发送的TAU request消息中的old TAC是高铁LTE专网TAC且UE的用户上下文中不包含所述UE是公网UE的标识信息，确定UE不是第一类型UE。
又如，在本发明的另一个实施例中，结合S502a和S502c,核心网控制面节点设备确定UE不是第一类型UE，包括：
当所述UE发送接入所述第二通信网络时请求消息时，所述核心网控制面节点设备根据所述请求消息中包含的所述UE最近访问的移 动性管理区域的编码是所述第一通信网络的移动性管理区域的编码且所述请求消息不是在所述UE从所述第一通信网络切换至所述第二通信网络后接收到的，确定所述UE不是第一类型UE。例如，具体到高铁LTE专网场景，MME可以根据UE发送的TAU request消息中的old TAC是高铁LTE专网TAC,且所述TAU request并不是切换后由UE发送的，确定UE不是第一类型UE。
又如，在本发明的另一个实施例中，结合S502a、S502b和S502c,核心网控制面节点设备确定UE不是第一类型UE，包括：
当所述UE发送接入所述第二通信网络时请求消息时，所述核心网控制面节点设备根据所述请求消息中包含的所述UE最近访问的移动性管理区域的编码是所述第一通信网络的移动性管理区域的编码且所述UE的用户上下文中未包含用于表示所述UE为第一类型UE的标识信息且所述请求消息不是在所述UE从所述第一通信网络切换至所述第二通信网络后接收到的，确定所述UE不是第一类型UE。例如，具体到高铁LTE专网场景，MME可根据UE发送的TAU request消息中的old TAC是高铁LTE专网TAC,且UE的用户上下文中不包含UE是公网UE的标识信息，且所述TAU request并不是切换后由UE发送的，确定UE不是第一类型UE。
除此之外，本发明还可以分不同区域采用上述S502a、S502b、S502c或它们的结合方式来确定UE不是第一类型UE。
例如，在结合S502a和S502b确定UE不是第一类型UE的情况下，还需要考虑接入所述第二通信网络的请求消息是否是从第一区域发出的。例如，第一区域可设置为距离火车站X公里范围内。当接入所述第二通信网络的请求消息是从第一区域发出的且满足S502a和S502b的判定条件，才确定UE不是第一类型UE。
又如，在结合S502a和S502c确定UE不是第一类型UE的情况下，还需要考虑接入所述第二通信网络的请求消息是否是从第二区域发出的。例如，第二区域可设置为距离火车站Y公里范围外。当接入所述第二通信网络的请求消息是从第二区域发出的且满足S502a和S502c的判定条件，才确定UE不是第一类型UE。
又如，在结合S502a,S502b和S502c确定UE不是第一类型UE的情况下，还需要考虑接入所述第二通信网络的请求消息是否是从第三区域发出的。例如，第一区域可设置为距离火车站Z公里范围外。当接入所述第二通信网络的请求消息是从第三区域发出的且满足S502a，S502b和S502c的判定条件，才确定UE不是第一类型UE。
(5)在UE驻留专网时(即接入高铁公网之前)，专网/共享核心网控制面节点设备在UE接入专网后先识别该UE是第二类型UE，并将该身份信息保存于用户上下文中。公网/共享的核心网控制面节点设备可通过从专网/共享核心网控制面节点设备获取用户上下文的方式而确定所述UE不是第一类型UE。
因此，步骤S502可包括：
S502d,第一核心网控制面节点设备(如，公网/共享的MME)向第二核心网控制面节点设备发送用户上下文请求消息,例如，当高铁专网和公网独立部署核心网控制设备时，第二核心网控制面节点设备可以是专网的核心网控制设备。当高铁专网和公网共享部署核心网控制设备时，第二核心网控制面节点设备即为专网和公网共享的核心网设备；
所述第一核心网控制面节点设备接收所述第二核心网控制面节点设备发送的用户上下文响应消息，所述用户上下文响应消息包括所述身份信息；
所述第一核心网控制面节点设备根据所述身份信息确定所述UE不是第一类型UE。
(6)当专网和公网核心网控制面节点设备共享部署时，所述共享核心网控制面节点设备在UE驻留于专网时(也就是接入公网之前)，已经识别该UE是第二类型UE，并记录该UE身份标识和第二类型UE之间的映射关系。UE的身份标识包括但不限于国际移动用户识别码(英文：international mobile subscriber identity，简称：IMSI)或全局唯一的临时标识(英文：globally unique temporary identity；简称：GUTI)。当UE脱离专网而接入公网时，核心网控制面节点设备可以通过UE上报的身份标识(如，IMSI或GUTI)查找内部记录的映 射关系而确定所述UE不是第一类型UE。
因此，步骤S502可包括：
S502e，所述第一核心网控制面节点设备接收所述UE上报的身份标识，根据所述身份标识和所述映射关系确定所述UE不是第一类型UE。
(7)当UE驻留于专网时(也就是接入公网之前)，UE已经被专网核心网控制面节点设备或共享核心网控制面节点设备识别为第二类型UE，并被专网核心网控制面节点设备或共享核心网控制面节点设备下发专用标识。例如，专用标识可以是专用GUTI，具体专网核心网控制面节点设备或共享核心网控制面节点设备可以通过GUTI重分配消息下发专用GUTI给UE 310，所述专用GUTI中包含专用移动性管理实体编码(英文：mobility management entity code；简称：MMEC)。
因此，步骤S502可包括：
S502f，核心网控制面节点设备接收所述UE上报的专用标识(如，含专用MMEC的GUTI)，所述专用标识是在所述UE接入所述第二通信网络前由所述第二核心网控制面节点设备向所述UE下发的，所述专用标识用于指示所述UE为第二类型UE，例如，第二核心网控制面节点设备可以是专网的核心网控制设备。当高铁专网和公网共享部署核心网控制设备时，第二核心网控制面节点设备即为第一核心网控制面节点设备；
所述核心网控制面节点设备根据所述专用标识确定所述UE不是第一类型UE。
(8)核心网控制面节点设备还可以通过公网基站eNodeB的告知而得知UE不是第一类型UE。例如，公网基站在所述UE接入公网时/后，测量所述UE的速度(如，公网基站利用多普勒频偏算法测量UE的速度)，若所述UE的速度高于预设值，所述公网基站确定所述UE不是第一类型UE，并发送通知信息至所述核心网控制面节点设备，以通知核心网控制面节点设备所述UE不是第一类型UE。
因此，步骤S502可包括：
S502g，所述核心网控制面节点设备接收所述基站的通知消息，所述通知消息用于指示所述UE不是第一类型UE；
所述第一核心网控制面节点设备根据所述通知消息确定所述UE不是第一类型UE。
需要说明的是，公网基站根据对UE的测速而确定UE不是第一类型UE还可用于其它场景或用途，并不限于本实施例中的描述。
(9)核心网控制面节点设备还可以通过判断所述UE接入公网后，发生TAU流程的频率或连接态下服务ENB改变的频率高于预设值，而识别UE不是第一类型UE。
因此，具体来说，步骤S502可包括以下任一：
S502h1，若核心网控制面节点设备识别出UE在预设时间段内触发移动性管理区域更新流程(如，TAU流程)的次数大于预设值(如，预设值大于1)，即，所述UE所在的TA/TA list发生了多次变换，则核心网控制面节点设备确定所述UE不是第一类型UE。
S502h2，对于空闲态UE，当UE发起移动性管理区域更新流程(如，TAU流程)时，若核心网控制面节点设备识别出移动性管理区域更新请求消息(如，TAU请求消息)来自于靠近高铁专网的公网eNodeB，则以设定方式寻呼所述UE设定次数。如果核心网控制面节点设备识别出UE发送的寻呼响应消息中设定数目的消息来自不同的eNodeB且这些不同的eNodeB都为靠近高铁专网的公网eNodeB，则核心网控制面节点设备确定UE不是第一类型UE。其中，核心网控制面节点设备中配置了相关eNodeB信息，用于确定一个eNodeB是否为靠近高铁专网的公网eNodeB。寻呼UE的方式(如时间间隔的设定)可参考公网中eNodeB之间的距离和高铁的速度。
S502h3，对于连接态UE，若核心网控制面节点设备识别出服务于所述UE的基站在预设时间段内变换的次数大于预设值，则确定所述UE不是第一类型UE。
S502h4，对于连接态UE，若核心网控制面节点设备识别出设定数目的服务UE的eNodeB不同，并且这些不同的eNodeB都是靠近高铁专网的公网eNodeB，则核心网控制面节点设备确定UE不是第一类 型UE。其中，核心网控制面节点设备中配置了相关eNodeB信息，用于确定一个eNodeB是否为靠近高铁专网的公网eNodeB。
核心网控制面节点设备通过以上任一方法识别UE不是第一类型UE后，为该UE分配第二SPID值。
图6示出了上述实施例中涉及到的一种核心网控制面节点设备600的设计方框图。所述核心网络可以是EPC网络，所述核心网控制面节点设备可以为MME。
所述核心网控制面节点设备包括：控制器/处理器602用于对核心网控制面节点设备的动作进行控制管理，执行各种功能来支持UE的通信服务。例如，控制器/处理器602用于支持核心网控制面节点设备执行图2中的过程200-202，图3中的过程S202a1-S202a2，图4中的过程S202b1，图5中的S502-S504，和/或用于本文所描述的技术的其他过程。存储器601用于存储用于所述和核心网控制面节点设备的程序代码和数据。接收器/发送器603用于支持与其他网络实体的通信。例如与图3或图4中基站的通信的通信。
图7示出了上述实施例中所涉及的基站700的一种可能的结构示意图。
基站包括发射器/接收器701,控制器/处理器702，存储器703以及通信单元704。所述发射器/接收器701用于支持基站与上述实施例中的所述的UE之间收发信息，以及支持所述UE与其他UE之间进行无线电通信。所述控制器/处理器702执行各种用于与UE通信的功能。在上行链路，来自所述UE的上行链路信号经由天线接收，由接收器701进行调解，并进一步由控制器/处理器702进行处理来恢复UE所发送到业务数据和信令信息。在下行链路上，业务数据和信令消息由控制器/处理器702进行处理，并由发射器701进行调解来产生下行链路信号，并经由天线发射给UE。控制器/处理器702还执行图3至图4中涉及基站的处理过程和/或用于本申请所描述的技术的其他过程。存储器703用于存储基站的程序代码和数据。通信单元704用于支持基站与其他网络实体进行通信。例如,用于支持基站与图3/图4中的示出的MME之间的通信。
可以理解的是，图7仅仅示出了基站的简化设计。在实际应用中，基站可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等，而所有可以实现本发明的基站都在本发明的保护范围之内。
此外，图8示出了根据本发明实施例的通信系统，包括上述核心网控制面节点设备600和基站700，此处不再赘述。
以上描述均以LTE网络为例进行描述。然而，本发明并不局限于此，本发明同样适用于GSM网络、UMTS网络或下一代通信网络。当本发明应用于GSM网络或UMTS网络时，核心网控制设备为SGSN和MSC。LTE网络中移动性管理区域为TA，2G/3G网络中移动性管理区域对应为路由区(英文：Routing Area，简称：RA)和位置区(英文：Location Area,简称：LA)。同时，LTE网络因移动产生TAU流程，而2G/3G网络对应为路由区更新(英文：Routing Area Update，简称：RAU)流程和位置区更新(英文：Location Area Update，简称LAU)流程。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (42)

  1. 一种通信方法，其特征在于，包括：
    核心网控制面节点设备确定第一通信网络中的用户设备UE是第一类型UE，所述第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络，所述第一类型UE为所述第一通信网络中未乘坐高速移动工具的用户所使用的UE；
    所述核心网控制面节点设备向所述第一通信网络的基站设备发送指示信息，所述指示信息用于指示所述UE为第一类型UE，以使所述基站设备将所述UE接入第二通信网络。
  2. 根据权利要求1所述的方法，其特征在于，所述第一通信网络和所述第二通信网络分别是不同的公用陆地移动网PLMN，或，所述第一通信网络和所述第二通信网络是同一个PLMN，但使用不同的接入频点。
  3. 根据权利要求1或2所述的方法，其特征在于，所述指示信息为第一无线接入制式/频点优先级用户文件标识SPID值，在所述核心网控制面节点设备确定所述UE为第一类型UE后，所述方法还包括：
    所述核心网控制面节点设备为所述UE分配用于指示所述UE为第一类型UE的所述第一SPID值。
  4. 根据权利要求1至3任一所述的方法，其特征在于，还包括：
    所述核心网控制面节点设备在所述UE的用户上下文中增加标识信息，所述标识信息用于表示所述UE是第一类型UE。
  5. 根据权利要求1至4任一所述的方法，其特征在于，所述核心网控制面节点设备确定第一通信网络中的UE是第一类型UE，包括：
    所述核心网控制面节点设备根据所述UE在第一指定区域内的驻留时间超过第一预设值，确定所述UE是第一类型UE。
  6. 根据权利要求5所述的方法，其特征在于，若所述核心网控制面节点设备在确定第一通信网络中的UE是第一类型UE之前确定所述UE通过特定区域接入了所述第一通信网络，则确定所述UE是第一类型UE包括：
    所述核心网控制面节点设备根据所述UE在第一指定区域内的驻 留时间超过第二预设值，确定所述UE是第一类型UE，其中，所述第二预设值大于所述第一预设值。
  7. 根据权利要求1至6任一所述的方法，其特征在于，所述核心网控制面节点设备确定第一通信网络中的UE是第一类型UE，包括：
    若在预设时间段内所述UE所在的移动性管理区域的变换次数小于第三预设值，则所述核心网控制面节点设备确定所述UE是第一类型UE。
  8. 根据权利要求4所述的任一方法，其特征在于，所述方法还包括：
    若接收到所述UE在第二指定区域的接入请求，则所述核心网控制面节点设备清除所述标识信息，所述第二指定区域包括所述第一通信网络的移动性管理区域。
  9. 根据权利要求7或8所述的任一方法，其特征在于，所述移动性管理区域包括跟踪区TA、路由区RA、位置区LA、基站覆盖区域或小区。
  10. 一种通信方法，其特征在于，包括：
    第一通信网络中的基站设备接收核心网控制面节点设备发送的第一无线接入制式/频点优先级用户文件标识SPID值，所述第一SPID值为所述核心网控制面节点设备确定所述第一通信网络中的用户设备UE是第一类型UE后向所述基站设备发送的；
    所述基站设备根据所述第一SPID值，触发所述UE离开所述第一通信网络；
    其中，所述第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络，所述第一类型UE为所述第一通信网络中未乘坐高速移动工具的用户所使用的UE。
  11. 根据权利要求10所述的方法，其特征在于，所述基站设备根据所述第一SPID值，触发所述UE离开所述第一通信网络，包括：
    所述基站设备根据所述第一SPID值向所述UE发送频点优先级信息，所述频点优先级信息用于指示所述UE优先选择第二通信网络的频点进行驻留。
  12. 根据权利要求10所述的方法，其特征在于，所述基站设备根据所述第一SPID值，触发所述UE离开所述第一通信网络，包括：
    所述基站设备根据所述第一SPID值，触发所述UE至第二通信网络的切换流程，将所述UE接入所述第二通信网络；或，
    所述基站设备根据所述第一SPID值，向所述UE发送第一消息，所述第一消息携带重定向信息，所述重定向信息包括与第二通信网络对应的频点信息，将所述UE接入所述第二通信网络。
  13. 一种通信方法，其特征在于，包括：
    核心网控制面节点设备接收用户设备UE发送的接入第二通信网络的请求消息；
    所述核心网控制面节点设备根据所述请求消息确定所述UE不是第一类型UE，所述第一类型UE为未乘坐高速移动工具的用户所使用的UE；
    所述核心网控制面节点设备向所述第二通信网络的基站设备发送指示信息，所述指示信息用于指示所述UE不是第一类型UE，以使所述基站设备将所述UE接入第一通信网络，所述第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络。
  14. 根据权利要求13所述的方法，其特征在于，所述第一通信网络和所述第二通信网络分别是不同的公用陆地移动网PLMN，或，所述第一通信网络和所述第二通信网络是同一个PLMN，但使用不同的接入频点。
  15. 根据权利要求13或14所述的方法，其特征在于，所述指示信息为第二无线接入制式/频点优先级用户文件标识SPID值，在所述核心网控制面节点设备确定所述UE为不是第一类型UE后，所述方法还包括：
    所述核心网控制面节点设备为所述UE分配所述第二SPID值。
  16. 根据权利要求13至15任一所述的方法，其特征在于，所述请求消息包括移动性管理区域更新请求消息或附着请求消息。
  17. 根据权利要求13至16任一所述的方法，其特征在于，所述请求消息中包含所述UE最近访问的移动性管理区域的编码；
    所述核心网控制面节点设备根据所述请求消息确定所述UE不是第一类型UE，包括：
    所述核心网控制面节点设备根据所述请求消息中包含的所述UE最近访问的移动性管理区域的编码是所述第一通信网络的移动性管理区域的编码，确定所述UE不是第一类型UE。
  18. 根据权利要求13至17任一所述的方法，其特征在于，所述核心网控制面节点设备根据所述请求消息确定所述UE不是第一类型UE，包括：
    所述核心网控制面节点设备根据所述UE的用户上下文中未包含用于表示所述UE为第一类型UE的标识信息，确定所述UE不是第一类型UE。
  19. 根据权利要求13至18任一所述的方法，其特征在于，所述核心网控制面节点设备根据所述请求消息确定所述UE不是第一类型UE，还包括：
    所述核心网控制面节点设备根据所述请求消息不是在所述UE从所述第一通信网络切换至所述第二通信网络后收到的，确定所述UE不是第一类型UE。
  20. 一种通信方法，其特征在于，包括：
    第二通信网络中的基站设备接收核心网控制面节点设备发送的指示信息，所述指示信息用于告知所述基站设备接入所述第二通信网络的用户设备UE不是第一类型UE，所述第一类型UE未乘坐高速移动工具的用户所使用的UE；
    所述基站设备根据所述指示信息将所述UE接入第一通信网络，所述第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络。
  21. 根据权利要求20所述的方法，其特征在于，所述基站设备根据所述指示信息将所述UE接入所述第一通信网络,包括：
    所述基站设备触发所述UE至所述第一通信网络的切换流程，将所述UE接入所述第一通信网络；或，
    所述基站设备向所述UE发送第二消息，所述第二消息携带重定 向信息，所述重定向信息包括与所述第一通信网络对应的频点信息，将所述UE接入所述第一通信网络。
  22. 根据权利要求21所述的方法，其特征在于，所述第二消息包括无线资源控制RRC连接释放消息。
  23. 根据权利要求20至22任一所述的方法，其特征在于，所述指示信息为第二无线接入制式/频点优先级用户文件标识SPID值，所述第二SPID值为所述核心网控制面节点设备确定所述UE不是第一类型UE后向所述基站设备发送的。
  24. 根据权利要求23所述的方法，其特征在于，
    所述基站设备根据所述指示信息将所述UE接入所述第一通信网络,包括：
    所述基站设备根据所述第二SPID值向所述UE发送频点优先级信息，所述频点优先级信息用于指示所述UE优先选择所述第一通信网络的频点进行驻留。
  25. 一种核心网控制面节点设备，其特征在于，包括：
    至少一个处理器，用于确定第一通信网络中的用户设备UE是第一类型UE，所述第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络，所述第一类型UE为所述第一通信网络中未乘坐高速移动工具的用户所使用的UE；
    发送器，用于向所述第一通信网络的基站设备发送指示信息，所述指示信息用于指示所述UE为第一类型UE，以使所述基站设备将所述UE接入第二通信网络。
  26. 根据权利要求25所述的核心网控制面节点设备，其特征在于，所述指示信息为第一无线接入制式/频点优先级用户文件标识SPID值，在确定所述UE为第一类型UE后，所述至少一个处理器还用于为所述UE分配用于指示所述UE为第一类型UE的所述第一SPID值。
  27. 根据权利要求25或26所述的核心网控制面节点设备，其特征在于，所述至少一个处理器还用于在所述UE的用户上下文中增加标识信息，所述标识信息用于表示所述UE是第一类型UE。
  28. 根据权利要求25至27任一所述的核心网控制面节点设备，其特征在于，所述至少一个处理器还用于根据所述UE在第一指定区域内的驻留时间超过第一预设值，确定所述UE是第一类型UE。
  29. 根据权利要求28所述的核心网控制面节点设备，其特征在于，若在确定第一通信网络中的UE是第一类型UE之前确定所述UE通过特定区域接入了所述第一通信网络，则所述至少一个处理器还用于根据所述UE在第一指定区域内的驻留时间超过第二预设值，确定所述UE是第一类型UE，其中，所述第二预设值大于所述第一预设值。
  30. 根据权利要求25至29任一所述的核心网控制面节点设备，其特征在于，若在预设时间段内所述UE所在的移动性管理区域的变换次数小于第三预设值，则所述至少一个处理器用于确定所述UE是第一类型UE。
  31. 根据权利要求27所述的任一核心网控制面节点设备，其特征在于，若接收到所述UE在第二指定区域的接入请求，则所述至少一个处理器还用于清除所述标识信息，所述第二指定区域包括所述第一通信网络的移动性管理区域。
  32. 一种基站设备，位于第一通信网络，其特征在于，包括：
    接收器，用于接收核心网控制面节点设备发送的第一无线接入制式/频点优先级用户文件标识SPID值，所述第一SPID值为所述核心网控制面节点设备确定所述第一通信网络中的用户设备UE是第一类型UE后向所述基站设备发送的；
    至少一个处理器，用于根据所述第一SPID值，触发所述UE离开所述第一通信网络；
    其中，所述第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络，所述第一类型UE为所述第一通信网络中未乘坐高速移动工具的用户所使用的UE。
  33. 根据权利要求32所述的基站设备，其特征在于，所述基站设备根据所述第一SPID值，触发所述UE离开所述第一通信网络，包括：
    所述基站设备根据所述第一SPID值向所述UE发送频点优先级信 息，所述频点优先级信息用于指示所述UE优先选择第二通信网络的频点进行驻留；或
    所述基站设备根据所述第一SPID值，触发所述UE至第二通信网络的切换流程，将所述UE接入所述第二通信网络；或，
    所述基站设备根据所述第一SPID值，向所述UE发送第一消息，所述第一消息携带重定向信息，所述重定向信息包括与第二通信网络对应的频点信息，将所述UE接入所述第二通信网络。
  34. 一种核心网控制面节点设备，其特征在于，包括：
    接收器，用于接收用户设备UE发送的接入第二通信网络的请求消息；
    至少一个处理器，用于根据所述请求消息确定所述UE不是第一类型UE，所述第一类型UE为未乘坐高速移动工具的用户所使用的UE；
    发送器，用于向所述第二通信网络的基站设备发送指示信息，所述指示信息用于指示所述UE不是第一类型UE，以使所述基站设备将所述UE接入第一通信网络，所述第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络。
  35. 根据权利要求34所述的核心网控制面节点设备，其特征在于，所述指示信息为第二无线接入制式/频点优先级用户文件标识SPID值，在确定所述UE为不是第一类型UE后，所述至少一个处理器还用于为所述UE分配所述第二SPID值。
  36. 根据权利要求34或35所述的核心网控制面节点设备，其特征在于，所述请求消息中包含所述UE最近访问的移动性管理区域的编码；所述至少一个处理器用于根据所述请求消息中包含的所述UE最近访问的移动性管理区域的编码是所述第一通信网络的移动性管理区域的编码，确定所述UE不是第一类型UE。
  37. 根据权利要求34至36任一所述的核心网控制面节点设备，其特征在于，所述至少一个处理器用于根据所述UE的用户上下文中未包含用于表示所述UE为第一类型UE的标识信息，确定所述UE不是第一类型UE。
  38. 根据权利要求34至37任一所述的核心网控制面节点设备， 其特征在于，所述至少一个处理器用于根据所述请求消息不是在所述UE从所述第一通信网络切换至所述第二通信网络后收到的，确定所述UE不是第一类型UE。
  39. 一种基站设备，位于第二通信网络，其特征在于，包括：
    接收器，接收核心网控制面节点设备发送的指示信息，所述指示信息用于告知所述基站设备接入所述第二通信网络的用户设备UE不是第一类型UE，所述第一类型UE未乘坐高速移动工具的用户所使用的UE；
    至少一个处理器，用于根据所述指示信息将所述UE接入第一通信网络，所述第一通信网络是为乘坐高速移动工具的用户提供通信服务的专用通信网络。
  40. 根据权利要求39所述的基站设备，其特征在于，所述至少一个处理器用于触发所述UE至所述第一通信网络的切换流程，将所述UE接入所述第一通信网络；或，
    所述基站还包括发送器，用于向所述UE发送第二消息，所述第二消息携带重定向信息，所述重定向信息包括与所述第一通信网络对应的频点信息，将所述UE接入所述第一通信网络。
  41. 根据权利要求39或40所述的基站设备，其特征在于，所述指示信息为第二无线接入制式/频点优先级用户文件标识SPID值，所述第二SPID值为所述核心网控制面节点设备确定所述UE不是第一类型UE后向所述基站设备发送的。
  42. 根据权利要求41所述的基站设备，其特征在于，
    所述至少一个处理器用于根据所述第二SPID值向所述UE发送频点优先级信息，所述频点优先级信息用于指示所述UE优先选择所述第一通信网络的频点进行驻留。
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