CN110475299A

CN110475299A - A kind of method and device of switching cell

Info

Publication number: CN110475299A
Application number: CN201810444773.7A
Authority: CN
Inventors: 黄晓舸; 张东宇; 张晨璐; 郑倩
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-05-10
Filing date: 2018-05-10
Publication date: 2019-11-19
Anticipated expiration: 2038-05-10
Also published as: CN110475299B

Abstract

The embodiment of the present invention provides a kind of method and device of switching cell, it is related to field of communication technology, user data forwarding needs to travel to and fro between core net during for solving switching cell, and forwarding process is more complicated, is unfavorable for the problem of improving the transmitting efficiency of user data.This method comprises: receiving the switch acknowledgment message that target BS is sent by equipment of the core network, UE is switched to Target cell from source cell for confirming by switch acknowledgment message；Switching command is sent to UE, and the first data are sent to target BS by MEC server, switching command is used to indicate UE and switches to Target cell from source cell, source cell is the cell of source base station service, Target cell is the cell of target base station service, and the first data are the user data that equipment of the core network is sent to source base station and source base station is not sent to UE.The embodiment of the present invention is used for switching cell.

Description

A kind of method and device of switching cell

Technical field

The present invention relates to field of communication technology more particularly to a kind of method and devices of switching cell.

Background technique

With continuing to bring out for the fast-developing and various new business of mobile Internet and Internet of Things, mobile data stream Explosive growth is presented in amount, and the radius of society for the data requirements for meeting superelevation, cellular mobile network constantly reduces.Due to honeycomb The diminution of the radius of society of mobile network, user equipment (User Equipment, UE) usually need in moving process from one The cell of a cellular mobile network switches to the cell of another cellular mobile network.

The process of traditional switching cell generally comprises: handover measurement processing, handover decisions, switching prepares, switching executes four A part.Wherein, when (communication system will serve UE's after switching for source base station (base station for being currently serviced in UE) and target BS Base station) between there is no an X2 interface, or that evolution block core net (Evolved Packet Core, EPC) node occurs is (mobile Property management body or gateway) using S1 interface to target BS initiate switching flow or source base station when changing and initiate X2 to connect When mouth switching is rejected, communication system switching will be carried out based on S1 interface.Need in cell switch process based on S1 interface It wants source base station to stop sending user data to UE, and is forwarded in core net having received and being not yet sent to the user data of UE The buffer area Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP) in, the buffer area PDCP In user data be forwarded to source gateway (Serving Gateway, S-GW) via data tunnel, then source S-GW passes through User data is forwarded to target S-GW by data tunnel, and subsequently user data is forwarded to mesh by data tunnel by target S-GW Mark base station.During the above-mentioned progress cell switching based on S1 interface, user data forwarding needs to travel to and fro between core net, forwarding flow Journey is more complicated, is unfavorable for improving data transmission efficiency.

Summary of the invention

The embodiment of the present invention provides a kind of method and device of switching cell, for solving switching cell during user Data forwarding needs to travel to and fro between core net, and forwarding process is more complicated, is unfavorable for the problem of improving the transmitting efficiency of user data.

In order to solve the above-mentioned technical problem, the present invention is implemented as follows:

In a first aspect, being used for source base station, the method packet the embodiment of the invention provides a kind of method of switching cell It includes:

The switch acknowledgment message that target BS is sent by equipment of the core network is received, the switch acknowledgment message is for confirming User equipment (UE) is switched into Target cell from source cell；

Switching command is sent to the UE, and sends the to the target BS by mobile edge calculations MEC server One data, the switching command are used to indicate the UE and switch to the Target cell from the source cell, and the source cell is The cell of the source base station service, the Target cell are the cell of the target base station service, and first data are described The user data that equipment of the core network is sent to the source base station and the source base station is not sent to the UE.

Second aspect, the embodiment of the invention provides a kind of methods of switching cell, are used for MEC server, the method Include:

Receive source base station send the first data, first data be equipment of the core network to the source base station send and The user data that the source base station is not sent to user equipment (UE)；

First data are sent to the target BS；

Wherein, the source base station is the base station served the UE and carry out the cell accessed before cell switching, the target Base station is the base station served the UE and carry out the cell accessed after cell switching.

The third aspect, the embodiment of the invention provides a kind of methods of switching cell, are applied to target BS, the method Include:

Switch acknowledgment message is sent to source base station by equipment of the core network；

It receives the source base station and passes through the first data that mobile edge calculations MEC server is sent；

Wherein, user equipment (UE) is switched to Target cell from source cell for confirming by the switch acknowledgment message, described Source cell is the cell of the source base station service, and the Target cell is the cell of the target base station service, first number According to the user data sent to the source base station for the equipment of the core network and the source base station is not sent to the UE.

Fourth aspect, the embodiment of the invention provides a kind of methods of switching cell, are applied to source AMF, the method packet It includes:

The switching request message that source base station is sent is received, the switching request message is for requesting user equipment (UE) from source Cell switches to Target cell；

The switching request message is sent to the target BS by target AMF；

Receive the switch acknowledgment message that the target BS is sent by the target AMF；The switch acknowledgment message is used The UE is switched into the Target cell from the source cell in confirmation；

The switch acknowledgment message is sent to the source base station；

Wherein, the source cell is the cell of the source base station service, and the Target cell is the target base station service Cell, the handoff request message includes: the first mapping relations；First mapping relations are as follows: Packet Data Convergence Protocol Sequence number PDCP SN and user face general packet radio service tunnel agreement sequence number GTP-U SN mapping relations.

5th aspect, the embodiment of the invention provides a kind of methods of switching cell, are applied to target AMF, the method Include:

The switching request message that source base station is sent by source AMF is received, the switching request message is for requesting user Equipment UE switches to Target cell from the source cell；

The switching request message is sent to the target BS；

Receive the switch acknowledgment message that the target BS is sent, the switch acknowledgment message for confirm by the UE from The source cell switches to the Target cell；

By the source AMF to switch acknowledgment message described in the source base station；

6th aspect, the embodiment of the invention provides a kind of base stations, comprising:

Receiving unit, the switch acknowledgment message sent for receiving target BS by equipment of the core network, the switching are true Recognize message and user equipment (UE) is switched into Target cell from the cell that the base station services for confirming；

Transmission unit for sending switching command to the UE, and passes through mobile edge calculations MEC server to the mesh It marks base station and sends the first data, the switching command is used to indicate the UE and switches to the mesh from the cell that the base station services Mark cell, the Target cell be the target base station service cell, first data be the equipment of the core network to The user data that the source base station is sent and the source base station is not sent to the UE.

7th aspect, the embodiment of the invention provides a kind of MEC servers, comprising: receiving unit, for receiving source base station The first data sent, first data are that equipment of the core network is sent to the source base station and the source base station is not to user The user data that equipment UE is sent；

Transmission unit, for sending first data to the target BS；

Eighth aspect, the embodiment of the invention provides a kind of base stations, comprising:

Transmission unit, for sending switch acknowledgment message to source base station by equipment of the core network；

Receiving unit passes through the first data that mobile edge calculations MEC server is sent for receiving the source base station；

Wherein, the switch acknowledgment message, which is used to confirm, switches to what the base station serviced from source cell for user equipment (UE) Cell, the source cell are the cell of the source base station service, and first data are the equipment of the core network to the source The user data that base station is sent and the source base station is not sent to the UE.

9th aspect, the embodiment of the invention provides a kind of AMF, comprising:

Receiving unit, for receiving the switching request message of source base station transmission, the switching request message will for request User equipment (UE) switches to Target cell from source cell；

Transmission unit, for sending the switching request message to the target BS by target AMF；

The receiving unit is also used to receive the switch acknowledgment message that the target BS is sent by the target AMF； The UE is switched to the Target cell from the source cell for confirming by the switch acknowledgment message；

The transmission unit is also used to the switch acknowledgment message being sent to the source base station；

Tenth aspect, the embodiment of the invention provides a kind of AMF, comprising:

Tenth on the one hand, and the embodiment of the invention provides a kind of base stations, comprising: processor, memory and is stored in described It is real when the computer program is executed by the processor on memory and the computer program that can run on the processor Now the step of method of the switching cell as described in first aspect or the third aspect.

12nd aspect, the embodiment of the invention provides a kind of MEC servers, comprising: processor, memory and is stored in On the memory and the computer program that can run on the processor, the computer program are executed by the processor The step of method of switching cell of the Shi Shixian as described in second aspect.

13rd aspect, the embodiment of the invention provides a kind of AMF, comprising: processor, memory and is stored in described deposit On reservoir and the computer program that can run on the processor, the computer program are realized when being executed by the processor The step of method of switching cell as described in terms of fourth aspect or the 5th.

Fourteenth aspect, the embodiment of the invention provides computer readable storage mediums, which is characterized in that the computer Computer program is stored on readable storage medium storing program for executing, and such as first aspect, second are realized when the computer program is executed by processor The step of method of switching cell described in any one of aspect, the third aspect, fourth aspect and the 5th aspect.

The method of switching cell provided in an embodiment of the present invention is cut in reception target BS by what equipment of the core network was sent After changing confirmation message, Xiang Suoshu UE sends switching command, and sends the first data to the target BS by MEC server, Wherein, switching command is used to indicate the UE and switches to the Target cell from the source cell, and first data are described Equipment of the core network to the source base station send and the source base station not to the UE send user data, i.e., instruction UE from After the source cell switches to the Target cell, by the equipment of the core network to source base station transmission and the source base station The user data not sent to the UE, by MEC server to target BS is sent to, middle cell is cut compared with the prior art During changing, user data forwarding needs to travel to and fro between core net, and the method for switching cell provided in an embodiment of the present invention passes through MEC server is forwarded user data, therefore can be to avoid travelling to and fro between core net, Jin Erke in user data repeating process To improve the transmitting efficiency of user data.

Detailed description of the invention

Fig. 1 is a kind of possible structural schematic diagram of communication system involved in the embodiment of the present invention；

Fig. 2 is one of the flow diagram of method of switching cell provided in an embodiment of the present invention；

Fig. 3 is the two of the flow diagram of the method for switching cell provided in an embodiment of the present invention；

Fig. 4 is the schematic diagram of base station provided in an embodiment of the present invention；

Fig. 5 is the schematic diagram of MEC server provided in an embodiment of the present invention；

Fig. 6 is the schematic diagram of another base station provided in an embodiment of the present invention；

Fig. 7 is the schematic diagram of AMF provided in an embodiment of the present invention；

Fig. 8 is the schematic diagram of another AMF provided in an embodiment of the present invention；

Fig. 9 is the hardware structure diagram schematic diagram of base station provided in an embodiment of the present invention；

Figure 10 is the hardware structure diagram schematic diagram of MEC provided in an embodiment of the present invention；

Figure 11 is the hardware structure diagram schematic diagram of AMF provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall within the protection scope of the present invention.

The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"；In formula, character "/" indicates forward-backward correlation Object is the relationship of a kind of " being divided by ".If explanation is not added, " multiple " herein refer to two or more.

For the ease of clearly describing the technical solution of the embodiment of the present invention, in an embodiment of the present invention, use " the One ", the printed words such as " second " distinguish function or the essentially identical identical entry of effect or similar item, and those skilled in the art can To understand that the printed words such as " first ", " second " are not defined quantity and execution order.

In the embodiment of the present invention, " illustrative " or " such as " etc. words for indicate make example, illustration or explanation.This hair Be described as in bright embodiment " illustrative " or " such as " any embodiment or design scheme be not necessarily to be construed as than it Its embodiment or design scheme more preferably or more advantage.Specifically, use " illustrative " or " such as " etc. words be intended to Related notion is presented in specific ways.In embodiments of the present invention, unless otherwise indicated, the meaning of " plurality " is refer to two or It is more than two.

It is carrying out that source base station is needed to stop sending user data to UE in cell switch process based on S1 interface, and having connect In the buffer area PDCP that receipts and the user data for being not yet sent to UE are forwarded in core net, the user data in the buffer area PDCP It is forwarded to source S-GW via data tunnel, then user data is forwarded to target S-GW by data tunnel by source S-GW, then so User data is forwarded to target BS by data tunnel by target S-GW afterwards, and user data forwarding needs to travel to and fro between core net, Forwarding process is more complicated, is unfavorable for improving data transmission efficiency.

To solve the above-mentioned problems, the embodiment of the invention provides a kind of method and device of switching cell, the switching is small For the method in area after receiving the switch acknowledgment message that target BS is sent by equipment of the core network, Xiang Suoshu UE sends switching life It enables, and the first data is sent to the target BS by MEC server, wherein switching command is used to indicate the UE from institute It states source cell and switches to the Target cell, first data have been sent to the source base station for the equipment of the core network and institute State the user data that source base station is not sent to the UE, i.e., after instruction UE switches to the Target cell from the source cell, The equipment of the core network is sent to the source base station and the source base station is not to the user data of UE transmission, is passed through MEC server is to target BS is sent to, and compared with the prior art in middle cell switch process, user data forwarding needs round-trip In core net, the method for switching cell provided in an embodiment of the present invention is forwarded user data by MEC server, because This can be to avoid travelling to and fro between core net in user data repeating process, and then the transmitting efficiency of user data can be improved.

Technical solution provided by the invention can be applied to various communication systems, for example, 5G communication system, the following evolution system System or a variety of communication emerging systems etc..It may include plurality of application scenes, for example, Machine To Machine (Machine to Machine, M2M), it is D2M, macro micro- communication, enhanced mobile Internet (enhance Mobile Broadband, eMBB), super High reliability communicates (ultra Reliable&Low Latency Communication, uRLLC) and sea with ultralow time delay Measure scenes such as Internet of Things Network Communication (Massive Machine Type Communication, mMTC).These scenes include but not It is limited to: between the communication between communication or network side equipment and network side equipment or network side equipment and UE between UE and UE In the scenes such as communication.The embodiment of the present invention can be applied to the communication between the network side equipment and UE in 5G communication system, Or the communication between UE and UE or the communication between network side equipment and network side equipment.

Fig. 1 shows a kind of possible structural schematic diagram of communication system involved in the embodiment of the present invention.Such as Fig. 1 institute Show, which specifically includes that source base station 11, target BS 12, source mobile management function to ps domain body (Access and Mobility Management Function, AMF) 13, target AMF 14, source user face functive (User Plane Function, UPF) 15, target UPF 16, mobile edge calculations (Mobile Edge Computing, MEC) server 17, net Network exposes functive (Network Exposure Function, NEF) 18, policy control functions body (Policy Control Function, PCF) 19 and user equipment (User Equipment, UE) 100 etc., wherein wireless access network (Radio Access Network, RAN) specifically include that source base station 11, target BS 12 and UE100, core net specifically includes that source AMF 13, target AMF 14, source UPF15, target UPF 16, NEF18 and PCF19.Source base station 11 and target BS 12 and core net Between connected by NG interface, specifically, source base station 11 and target BS 12 are connect with UPF by NG-U interface, source base station 11 And target BS 12 is connect with AMF by NG-C interface, source AMF 11 is connect with source UPF 15 by N4 interface, target AMF 14 It is connect with target UPF 16 by N4 interface, MEC server 17 is deployed in close to base station 11,12 side of target BS, core net choosing The UPF close to UE 100 is selected, the data forwarding of UPF to MEC is executed, information exchange is carried out by NEF and MEC.Between core net And the data transmission between core net and base station is transmitted by GTP-U data tunnel agreement.Source base station 11 and mesh Mark base station 12 belongs to the same MEC cluster, and does not have Xn interface between source base station 11 and target BS 12.

Above-mentioned source base station 11 and target BS 12 can be transmitting receiving node (Transmission and Reception Point, TRP), relay station or access point etc..Source base station 11 and target BS 12 can be global mobile communication System (Global System for Mobile communication, GSM) or CDMA (Code Division Multiple Access, CDMA) base transceiver station (Base Transceiver Station, BTS) in network, it can also To be the NB (NodeB) in wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), It can also be the eNB or eNodeB (evolutional NodeB) in LTE.Source base station 11 and target BS 12 can also be cloud Wireless controller under Radio Access Network (Cloud Radio Access Network, CRAN) scene.Source base station 11 and mesh Mark base station 12 can also be that the network side equipment in 5G communication system or the network side equipment in future evolution network, such as 5G lead to Base station gNG in letter system.

Equipment of the core network equipment of the core network may include control plane equipment and user face equipment.Wherein, control plane equipment can To include mobility management entity (Mobility Management Entity, MME), user face equipment may include service network Close (Serving Gateway, S-GW) and grouped data network gateway (Packet Data Network Gateway, PDN- GW) etc..Wherein, MME can be used for mobile management, session management, network element selection and progress user's carrying information storage etc..S-GW Have the function of session management, Route Selection and data forwarding, service quality control, charging and storage information etc. etc..PDN-GW Can be used for Internet protocol (Internet Protocol, IP) address distribution, session management, Route Selection, data forwarding, Service quality control, charging, strategy and charging execution etc..

UE 100 can may be wired UE for wireless UE, the wireless UE can be directed to user provide voice and/or The equipment of other business datum connectivity has the handheld device of wireless communication function, calculates equipment or be connected to wireless-modulated Other processing equipments, mobile unit, wearable device, the UE in future 5G network or the PLMN net of the following evolution of demodulator UE etc. in network.Wireless UE can be through wireless access network (Radio Access Network, RAN) and one or more core nets It is communicated, wireless UE can be mobile terminal, such as mobile phone (or be " honeycomb " phone) and the meter with mobile terminal Calculation machine, for example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they and nothing Line access exchange language and/or data and personal communication service (Personal Communication Service, PCS) phone, wireless phone, Session initiation Protocol (Session Initiation Protocol, SIP) phone, wireless local Loop (Wireless Local Loop, WLL) stands, personal digital assistant (Personal Digital Assistant, PDA) Etc. equipment, wireless terminal may be mobile device, UE terminal, access terminal, wireless telecom equipment, terminal unit, terminal station, Movement station (Mobile Station), mobile station (Mobile), distant station (Remote Station), remote station, remote terminal (Remote Terminal), subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), Yong Hudai Manage (User Agent), terminal installation etc..As a kind of example, in embodiments of the present invention, Fig. 1 is mobile phone for illustration with UE Out.

Embodiment one,

The embodiment of the present invention provides a kind of method of switching cell, specifically, this method includes such as referring to shown in Fig. 2 Lower step:

S201, source base station send switching request message to source AMF.

Corresponding, source AMF receives the switching request message that source base station is sent.

Wherein, UE is switched to Target cell from source cell for requesting by the switching request message, and the source cell is The cell of the source base station service.The handoff request message includes: the first mapping relations；First mapping relations are as follows: point Sequence number (Packet Data Convergence Protocol the Serial Number, PDCP of group data convergence protocol SN) with the sequence number of user face general packet radio service tunnel agreement (General Packet Radio Service Tunnelling Protocol User Plane Serial Number, GTP-U SN) mapping relations.

Optionally, the mapping relations of PDCP SN and GTP-U SN can have source base station to obtain by calculating, and be closed with mapping It is that the mode of formula carries in switching request message.Such as: source base station receives the GTP-U of the carrying of the data packet from core net SN is 11, and PDCP SN when which is sent to UE after source base station PDCP number is 7, then PDCP SN and GTP-U The mapping relations formula of SN are as follows: PDCP SN=GTP-U SN -4.

Further, source base station is sent switching request message to source AMF and can be triggered with a-d as follows:

A, source base station sends configuration information to UE, and the configuration information includes: the title of at least one measurement parameter.

Corresponding, UE receives the configuration information that the source base station is sent.

B, UE obtains the value of at least one measurement parameter according to configuration information measurement.

C, UE sends measurement report information to the source base station, and the measurement report information includes at least one described measurement The value of parameter.

D, source base station is based on the measurement report and wireless resource management (Radio Resource Management, RRM) Information determines whether UE switched to target BS from source base station.

If source base station, which is determined, switches to target BS from source base station for UE, switching request message is sent to source AMF.

The switching request message is sent to target AMF by S202, source AMF.

Corresponding, target AMF receives the switching request message that source AMF is sent.

The switching request message is sent to target BS by S203, target AMF.

Corresponding, target BS receives the switching request message that target AMF is sent.

Wherein, the target BS is the base station for serving Target cell, that is, the Target cell is the target BS The cell of service.

Illustratively, as shown in Figure 1, target AMF is connected with target BS by NG-C interface, therefore target AMF can be with Switching request message is sent to target BS by NG-C interface.

So far, source base station has sent target BS, target BS for the switching request message by equipment of the core network The switching request message of source base station transmission is had received by equipment of the core network.

S204, target BS send switch acknowledgment message to target AMF.

Corresponding, target AMF receives the switch acknowledgment message that target BS is sent.

Wherein, user equipment (UE) is switched to Target cell from source cell for confirming by the switch acknowledgment message.

It should also be noted that, target BS is in the switching request message for receiving source base station and being sent by equipment of the core network When, it is also possible to determine that UE is switched to target BS from source base station by refusal, at this point, target BS will not by equipment of the core network to Source base station sends switch acknowledgment message, i.e., will not send switch acknowledgment message to target AMF, and cell switching flow terminates, but this In inventive embodiments to this scene without explanation, only consider target BS receive source base station by equipment of the core network hair When the switching request message sent, the scene that UE is switched to target BS from source base station is determined.

S205, target AMF send the switch acknowledgment message to source AMF.

Corresponding, source AMF receives the switch acknowledgment message that the target AMF is sent.

S206, source AMF send the switch acknowledgment message to the source base station.

Corresponding, source base station receives the switch acknowledgment message that source AMF is sent.

Equally, as shown in Figure 1, being connected between source AMF and source base station by NG-C interface, therefore source AMF can pass through NG- Switch acknowledgment message is sent to source base station by C interface.

So far, target BS has sent source base station for the switch acknowledgment message by equipment of the core network, and source base station is logical Cross the switch acknowledgment message that equipment of the core network has received target BS transmission.

S207, source base station send switching command to the UE.

Corresponding, the UE receives the switching command that the source base station is sent.

Wherein, the switching command is used to indicate the UE and switches to the Target cell from the source cell.

S208, the UE are separated from source cell and are accessed Target cell.

Further, after separating as UE from source cell and be synchronized to Target cell, it is separated that source base station can perceive UE, and And target BS can also perceive UE and access, therefore source base station and target BS execute respectively following steps S209 and S213。

It is executed under following step S209 and target BS execution it should be noted that not limiting source base station in the embodiment of the present invention State the sequencing of step S213, that is, step S209 can be first carried out with source base station, execute S213 after target BS, it can also be with mesh Mark base station first carries out S213, executes S209 after source base station, can be performed simultaneously with source base station and target BS step S209 and S213。

S209, source base station send the first data to MEC server.

Corresponding, MEC receives the first data that source base station is sent.

Wherein, first data are sent to the source base station for the equipment of the core network and the source base station is not to institute State the user data of UE transmission.

Specifically, the first data specifically may include at least one of following three types data:

A class: source base station has received and has carried out PDCP number, but the user data not sent to UE also.

B class: source base station has received, not yet progress PDCP number, the user data also not sent to UE.

C class: core net is sent to source base station, the user data of source base station just in the reception.

S210, the MEC server send first data to the target BS.

Corresponding, the target BS receives first data that the MEC server is sent.

That is, MEC server, which receives, serves the base station that the UE progress cell switches the preceding cell accessed is sent first Data, and by first data forwarding to the base station for serving the UE and carrying out the cell accessed after cell switching.

That is, instruction UE switch to the Target cell from the source cell after, source base station by the equipment of the core network It is sent to the source base station and the source base station is not to the user data of UE transmission, mesh is sent to by MEC server Base station is marked, compared with the prior art in middle cell switch process, user data forwarding needs to travel to and fro between core net, and the present invention is implemented The method for the switching cell that example provides, is forwarded user data by MEC server, therefore can turn to avoid user data Core net is travelled to and fro between during hair, and then the transmitting efficiency of user data can be improved.

S211, target BS carry out the data packet for not carrying out PDCP number in the first data according to the first mapping relations PDCP number.

As above, the B class data packet in the first data and C class data packet are not carry out the data packet of PDCP number, therefore mesh Base station is marked according to the first mapping relations to the B class data packet and C class data packet progress PDCP number in the first data.

Illustratively, the mapping relations formula of PDCP SN and GTP-U SN are as follows: SN -4 PDCP SN=GTP-U, and the first number The GTP-U SN that B class data packet and C class data packet in carry is 20,21,22 ..., then to the B class data in the first data Packet and C class data packet carry out the PDCP SN=16 after PDCP number, and 17,18 ....

S212, target BS send the first data after carrying out PDCP number to the UE.

Corresponding, the UE receives first data that the target BS is sent.

S213, target BS are to target AMF transmitting path switching request message.

Corresponding, target AMF receives the path switching request message that the target BS is sent.

User equipment (UE) is switched to Target cell, the source cell from source cell for confirming by the switch acknowledgment message For the cell of the source base station service.

S214, target AMF control target UPF to described in target BS transmission according to the path switching request message Second data.

Corresponding, the target BS receives the second data that the target UPF is sent.

S215, target BS target BS carry out PDCP number to the second data according to the first mapping relations.

S216, target BS send the second data after carrying out PDCP number to the UE.

Corresponding, the UE receives second data that the target BS is sent.

Carry PDCP SN's and GTP-U SN in the switching request message sent due to source base station by equipment of the core network Mapping relations, therefore target BS can directly count second received after the second data for receiving target UPF transmission According to PDCP number is carried out, without waiting the first data to complete transmission, therefore the embodiment of the present invention passes through in switching request message The middle mapping relations for carrying PDCP SN and GTP-U SN can be further improved the transmitting efficiency of user data.

Further, after steps flow chart shown in figure 2 above, the method for switching cell provided in an embodiment of the present invention is also It may include steps of 1-4.

1, the target BS sends switching completion notice to target AMF.

Corresponding, target AMF receives the switching completion notice that the target BS is sent.

Wherein, the switching completion notice is used to indicate cell switching and is completed.

2, the target AMF sends the switching completion notice to the source AMF.

Corresponding, source AMF receives the switching completion notice that the target AMF is sent.

3, the source AMF is received to the source base station and is sent the switching completion notice.

Corresponding, the source base station receives the switching completion notice that the source AMF is sent.

4, the source base station discharges the context of the UE.

Further, the data distributing process at traditional network are as follows: data are sent to core net, core via mobile Internet Heart net forwards the data to base station, and then base station sends data to user again.It is quick due to mobile Internet and Internet of Things Development and various new business continue to bring out, and explosive growth will be presented in mobile data flow, if data traffic all by Core net and the processing of distal end cloud data center, it is excessive necessarily to will cause core network service bearing capacity, causes time delay to be increased sharply, business is gathered around The problems such as plug, will substantially influence network performance and user experience.To solve the above-mentioned problems, referring to shown in Fig. 3, reality of the invention The method for applying the switching cell of example offer still further comprises following steps:

S301, the MEC server judge whether to have cached the second data.

Optionally, the mode that MEC server caches data can be with are as follows: MEC server and multiple base stations are established and connected After connecing, MEC server and multiple base stations form a network cluster, and MEC server is the cluster head of the network cluster, and is connected to The base station of the same MEC server belongs to the same cluster, shares a MEC ID.Before carrying out cell switching, in network cluster For the UE of base station access periodically to serving base stations report oneself state information, oneself state information and UE state are believed in base station Breath is transmitted to MEC server, and such MEC server has just grasped the global information in cluster.MEC server can be by network boom in cluster Door content is cached from internet, and classification and ordination simultaneously sets hot value, updates cache contents according to hot value dynamic.

Specifically, source base station can inform MEC server UE currently just simultaneously by what the first data were sent to MEC server In the status information of the data service of progress.After MEC server receives the status information of UE current data service, to the first data Interior data packet is analyzed, and can learn the business data packet that be next sent to UE, it can next learning will send out Give the second data of UE.

In above-mentioned steps S301, if the second data of the MEC server buffer, then follow the steps S302, if described Uncached second data of MEC server, then follow the steps S303.

S302, the MEC server send the first request message to the target BS.

Corresponding, target BS receives first notification message that the MEC server is sent.

Wherein, first request message sends second data to the target BS for requesting.

S303, the MEC server judge whether second data are stored in local network.

Specifically, MEC services implement body local network protocol (Internet Protocol, IP) address lookup function.Example Such as, UE passes through uniform resource locator (Uniform Resource Locator, URL) " www.LocalInternet.com " When accessing local network, MEC server can be triggered and inquired, inquiry www.LocalInternet.com corresponding server Whether IP address belongs to local network.

In above-mentioned steps S303, if MEC server determines that second data are stored in local network, then follow the steps S302 thens follow the steps S304 if MEC server determines that second data are not stored in local network.

S304, the MEC server judge whether and first server connection.

Wherein, the first server is the server for storing second data.

It should be noted that the first server is specifically as follows the service for storing the business datum of the UE request Device, that is, first server had not only stored first data, but also stored second data.

Specifically, in European Telecommunication Standardization Association (European Telecommunications Standards Institute, ETSI) MEC specification in, MEC server can be opened to third party developer, provide third-party application collection At.For example, enterprise can need not move through core net, Ke Yitong with the MEC server of deployment-specific, corporate authentication user data service Cross the direct access enterprise networks network of MEC server, thus MEC server may directly with some server connection.

In above-mentioned steps S304, if the MEC server and first server connection, then follow the steps S302, if institute MEC server is stated not with first server connection, then program steps flow chart terminates.

When target BS receives the first request message of MEC server transmission, can be judged based on current network environment No the second data for receiving the MEC server and sending, if confirmation does not receive the second data that the MEC server is sent, Program process terminates, if confirmation receives the second data that the MEC server is sent, executes following steps S305-S307.

S305, the target BS send the first response message to the MEC server.

Corresponding, the MEC server receives the first response message that the target BS is sent.

Wherein, first response message, which is used to confirm, receives second data that the MEC server is sent.

S306, the target BS send the first notification message to the equipment of the core network.

Corresponding, the equipment of the core network receives the first notification message that the target BS is sent.

Wherein, first notification message is used to indicate the equipment of the core network and stops to described in target BS transmission Second data.

S307, the target BS abandon the number that data convergence protocol PDCP number has been grouped in second data According to packet.

After the MEC server receives the first response message that the target BS is sent, following step S308 is executed.

S308, the MEC server send second data to the target BS.

Corresponding, the target BS receives second data that the MEC server is sent.

When the target AMF in the equipment of the core network receives the first notification message that the target BS is sent, hold Row following steps S309.

S309, the target AMF, which control the target UPF according to first notification message, to be stopped to the target BS Send second data.

S310, target BS carry out PDCP number to second data that the MEC server is sent.

S311, target BS send second data after carrying out PDCP number to the UE.

Corresponding, the UE receives the second data that the target BS is sent.

Above-described embodiment is stored in local network in the second data of MEC server buffer or second data, or In the case where MEC server and first server connection, second number is directly sent to target BS by MEC server According to, therefore avoid data traffic and all handled by core net and distal end cloud data center, therefore can solve core network service and hold The problems such as carrying capacity is excessive, and then caused time delay is increased sharply, traffic congestion.

Embodiment two,

The embodiment of the present invention provides a kind of base station, and referring to shown in Fig. 4, which includes:

Receiving unit 41, the switch acknowledgment message sent for receiving target BS by equipment of the core network, the switching User equipment (UE) is switched to Target cell from the cell that the base station services for confirming by confirmation message；

Transmission unit 42, for sending switching command to the UE, and by mobile edge calculations MEC server to described Target BS sends the first data, and the switching command is used to indicate described in the UE switches to from the cell that the base station service Target cell, the Target cell be the target base station service cell, first data be the equipment of the core network It is sent to the source base station and the source base station is not to the user data of UE transmission.

Optionally, the transmission unit 42 is also used to send switching to the target BS by the equipment of the core network Request message, the switching request message are small for requesting the UE switching to the target from the cell that the base station services Area, the handoff request message include: the first mapping relations, first mapping relations are as follows: the sequence of Packet Data Convergence Protocol The mapping relations of row number PDCP SN and the sequence number GTP-U SN of user face general packet radio service tunnel agreement.

The switch acknowledgment message that base station provided in an embodiment of the present invention is sent in reception target BS by equipment of the core network Afterwards, Xiang Suoshu UE sends switching command, and sends the first data to the target BS by MEC server, wherein switching life Order is used to indicate the UE and switches to the Target cell from the source cell, first data be the equipment of the core network It is sent to the source base station and the source base station is not to the user data of UE transmission, i.e., cut in instruction UE from the source cell After shifting to the Target cell, the equipment of the core network is sent to the base station and the base station is not to UE transmission User data, by MEC server to target BS is sent to, compared with the prior art in middle cell switch process, number of users Need to travel to and fro between core net according to forwarding, base station provided in an embodiment of the present invention turns user data by MEC server Hair, therefore can be to avoid travelling to and fro between core net in user data repeating process, and then the transmitting efficiency of user data can be improved.

Embodiment three,

The embodiment of the present invention provides a kind of MEC server, specifically, referring to Figure 5, which includes:

Receiving unit 51, for receive source base station transmission the first data, first data be equipment of the core network to The user data that the source base station is sent and the source base station is not sent to user equipment (UE)；

Transmission unit 52, for sending first data to the target BS；

Wherein, the source base station is the base station served the UE and carry out the cell accessed before cell switching, the target Base station is the base station served the UE and carry out the cell accessed after cell switching, and first data are the equipment of the core network It is sent to the source base station and the source base station is not to the user data of UE transmission.

Optionally, the transmission unit 52 is also used in the case where confirmation has cached the second data, Xiang Suoshu target base It stands and sends the first request message；First request message sends second data, institute to the target BS for requesting Stating the second data is the user data that equipment of the core network is not sent to the source base station.

Optionally, in the case where confirming uncached second data, the transmission unit 52 is also used in confirmation institute It states in the case that the second data are stored in local network, Xiang Suoshu target BS sends first request message.

Optionally, in the case where confirming that second data are not stored in local network, the transmission unit 52, also For in the case where confirmation is with first server connection, Xiang Suoshu target BS to send first request message；

The first server is the server for storing second data.

Optionally, the receiving unit 51, is also used to receive the first response message that the target BS is sent, and described the One response message, which is used to confirm, receives second data that the MEC server is sent；

The transmission unit 52 is also used to send second data to the target BS.

MEC server provided in an embodiment of the present invention is sent out after receiving the first data that source base station is sent to target BS It send and sends first data, that is, in the embodiment of the present invention in cell switch process, by MEC server by the core Net equipment has been sent to the source base station and the source base station is not sent to target BS, phase to the user data that the UE is sent Than in cell switch process in the prior art, user data forwarding needs to travel to and fro between core net, provided in an embodiment of the present invention MEC server can be forwarded user data, thus can to avoid travelling to and fro between core net in user data repeating process, into And the transmitting efficiency of user data can be improved.

Example IV,

The embodiment of the present invention provides a kind of base station, specifically, referring to shown in Fig. 6, which includes:

Transmission unit 61, for sending switch acknowledgment message to source base station by equipment of the core network；

Receiving unit 62 passes through the first data that mobile edge calculations MEC server is sent for receiving the source base station；

Wherein, the switch acknowledgment message, which is used to confirm, switches to what the base station serviced from source cell for user equipment (UE) Cell, the source cell are that the first data described in the cell of the source base station service are the equipment of the core network to the source base Stand transmission and the source base station not to the UE send user data.

Optionally, the transmission unit 61 is also used to the equipment of the core network transmitting path switching request message；

The receiving unit 62 is also used to receive the second data that the equipment of the core network is sent；

Wherein, the path switching request message is for requesting the equipment of the core network that the second data are sent to the base It stands, second data are the user data that equipment of the core network is not sent to the source base station.

Optionally, the receiving unit 62 is also used to receive the source base station and is cut by what the equipment of the core network was sent Request message is changed, user equipment (UE) is switched to the target BS for requesting by the switching request message, and the switching is asked Seeking message includes: the first mapping relations, first mapping relations are as follows: the sequence number PDCP SN of Packet Data Convergence Protocol with The mapping relations of the sequence number GTP-U SN of user face general packet radio service tunnel agreement.

Optional, the base station 600 further include: numbered cell 63；

The numbered cell 63, for according to first mapping relations to not being grouped data in first data The data packet and second data of convergence protocol PDCP number carry out PDCP number.

Optionally, the receiving unit 62 is also used to receive the first request message that the MEC server is sent, described First request message sends second data to the target BS for requesting；

The transmission unit 61 is also used to receive the first request message that the MEC server is sent, first request Message sends second data to the target BS for requesting；First notification message is used to indicate the core net Equipment stops sending second data to the target BS；

The numbered cell 63, be also used to abandon be grouped in second data data convergence protocol PDCP number Data packet；

The receiving unit 62 is also used to receive second data that the MEC server is sent.

Base station provided in an embodiment of the present invention receives after sending switch acknowledgment message to source base station by equipment of the core network The source base station passes through the first data that mobile edge calculations MEC server is sent, that is, switches in the embodiment of the present invention in cell In the process, the equipment of the core network is received to source base station transmission and the non-Xiang Suoshu of the source base station by MEC server The user data that UE is sent, compared with the prior art in middle cell switch process, user data forwarding needs to travel to and fro between core net, Base station provided in an embodiment of the present invention receives the user data that source base station is sent by MEC server, therefore can be to avoid user Core net is travelled to and fro between in data forwarding process, and then the transmitting efficiency of user data can be improved.

Embodiment five,

The embodiment of the present invention provides a kind of AMF, specifically, referring to shown in Fig. 7, which includes:

Receiving unit 71, for receiving the switching request message of source base station transmission, the switching request message is for requesting User equipment (UE) is switched into Target cell from source cell；

Transmission unit 72, for sending the switching request message to the target BS by target AMF；

The receiving unit 71 is also used to receive the switching confirmation that the target BS is sent by the target AMF and disappears Breath；The UE is switched to the Target cell from the source cell for confirming by the switch acknowledgment message；

The transmission unit 72 is also used to the switch acknowledgment message being sent to the source base station；

Since source base station carries PDCP SN and GTP-U into the switching request message that target BS is sent by AMF The mapping relations of SN, therefore target BS is after the second data for receiving target UPF transmission, it can be directly to the received Two data carry out PDCP number, and without waiting the first data to complete transmission, therefore the embodiment of the present invention passes through in switching request The transmitting efficiency of user data can be improved in the mapping relations that PDCP SN and GTP-U SN is carried in message.

Embodiment six,

The embodiment of the present invention provides a kind of AMF, specifically, referring to shown in Fig. 8, which includes:

Receiving unit 81, the switching request message sent for receiving source base station by source AMF, the switching request message For requesting user equipment (UE) switching to Target cell from the source cell；

Transmission unit 82, for sending the switching request message to the target BS；

The receiving unit, is also used to receive the switch acknowledgment message that the target BS is sent, and the switching confirmation disappears The UE is switched to the Target cell from the source cell for confirming by breath；

The transmission unit 82 is also used to through the source AMF to switch acknowledgment message described in the source base station；

Optionally, referring to shown in Fig. 8, the AMF further include: processing unit 83；

The reception is 81 yuan single, is also used to receive the path switching request message that the target BS is sent；

The processing unit 83, for according to the path switching request message control target user face functive UPF to The target BS sends second data；

Wherein, the path switching request message is for requesting the equipment of the core network that the second data are sent to the mesh Base station is marked, second data are the user data that equipment of the core network is not sent to the source base station.

Optionally, the receiving unit 81 is also used to the first notification message that the target BS is sent, and described first is logical Know that message is used to indicate the equipment of the core network and stops sending second data to the target BS；

The processing unit 83 is also used to be stopped according to first notification message control target UPF to the mesh It marks base station and sends second data.

Embodiment seven,

The embodiment of the present invention also provides a kind of base station, and referring to shown in Fig. 9, which includes: processor 91, memory 92, It is stored in the computer program that can be run on memory 92 and on processor 91, when which is executed by processor 91 It realizes the step of source base station and/or target BS execute in the method for the switching cell in above-described embodiment one, and phase can be reached Same technical effect, to avoid repeating, which is not described herein again.

The embodiment of the present invention also provides a kind of MEC server, and referring to Fig.1 shown in 0, which includes: processor 101, memory 102 is stored in the computer program that can be run on memory 102 and on processor 101, the computer program The step of MEC server executes in the method for the switching cell in above-described embodiment one, and energy are realized when being executed by processor 101 Reach identical technical effect, to avoid repeating, which is not described herein again.

The embodiment of the present invention also provides a kind of AMF, and referring to Fig.1 shown in 1, which includes: processor 111, memory 112, It is stored in the computer program that can be run on memory 112 and on processor 111, which is held by processor 111 The step of source AMF and/or target AMF is executed in the method for the switching cell in above-described embodiment one is realized when row, and can be reached Identical technical effect, to avoid repeating, which is not described herein again.

The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium Calculation machine program, the computer program realize multiple mistakes of the method for the switching cell in above-described embodiment when being executed by processor Journey, and identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, computer readable storage medium, Such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, letter Claim RAM), magnetic or disk etc..

The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium Calculation machine program, the computer program realize multiple processes of the embodiment of the method for above-mentioned switching cell when being executed by processor, and Identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, computer readable storage medium, as ROM, RAM, magnetic or disk etc..

It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do There is also other identical elements in the process, method of element, article or device.

Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art The part contributed out can be embodied in the form of software products, which is stored in a storage medium In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service Device, air conditioner or network side equipment etc.) execute various embodiments of the present invention described in switching cell method.

The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much Form belongs within protection of the invention.

Claims

1. a kind of method of switching cell, which is characterized in that be used for source base station, which comprises

The switch acknowledgment message that target BS is sent by equipment of the core network is received, the switch acknowledgment message will be used for confirming Family equipment UE switches to Target cell from source cell；

Switching command is sent to the UE, and the first number is sent to the target BS by mobile edge calculations MEC server According to the switching command is used to indicate the UE and switches to the Target cell from the source cell, and the source cell is described The cell of source base station service, the Target cell are the cell of the target base station service, and first data are the core The user data that net equipment is sent to the source base station and the source base station is not sent to the UE.

2. the method according to claim 1, wherein receiving what target BS was sent by equipment of the core network Before switch acknowledgment message, the method also includes:

Switching request message is sent to the target BS by the equipment of the core network, the switching request message is for requesting The UE is switched into the Target cell from the source cell, the handoff request message includes: the first mapping relations, described First mapping relations are as follows: the sequence number PDCP SN and user face general packet radio service tunnel of Packet Data Convergence Protocol are assisted The mapping relations of the sequence number GTP-U SN of view.

3. a kind of method of switching cell, which is characterized in that be applied to mobile edge calculations MEC server, which comprises

Receive source base station send the first data, first data be equipment of the core network to the source base station send and it is described The user data that source base station is not sent to user equipment (UE)；

First data are sent to the target BS；

Wherein, the source base station is the base station served the UE and carry out the cell accessed before cell switching, the target BS To serve the base station that the UE carries out the cell accessed after cell switching, first data be the equipment of the core network to The user data that the source base station is sent and the source base station is not sent to the UE.

4. according to the method described in claim 3, it is characterized in that, the method also includes:

In the case where confirmation has cached the second data, Xiang Suoshu target BS sends the first request message；First request Message sends second data to the target BS for requesting, and second data are equipment of the core network not to the source The user data that base station is sent.

5. according to the method described in claim 4, it is characterized in that, in the case where confirming uncached second data, institute State method further include:

In the case where confirming that second data are stored in local network, Xiang Suoshu target BS sends first request and disappears Breath.

6. according to the method described in claim 5, it is characterized in that, being not stored in local network in confirmation second data In the case where, the method also includes:

In the case where confirmation is with first server connection, Xiang Suoshu target BS sends the first request message；

The first server is the server for storing second data.

7. according to the described in any item methods of claim 4-6, which is characterized in that sending the first request to the target BS After message, the method also includes:

The first response message that the target BS is sent is received, first response message receives the MEC clothes for confirming Second data that business device is sent；

Second data are sent to the target BS.

8. a kind of method of switching cell, which is characterized in that be applied to target BS, which comprises

Wherein, user equipment (UE) is switched to Target cell from source cell for confirming by the switch acknowledgment message, and the source is small Area is the cell of the source base station service, and the Target cell is the cell of the target base station service, and first data are The user data that the equipment of the core network is sent to the source base station and the source base station is not sent to the UE.

9. according to the method described in claim 8, it is characterized in that, the method also includes:

To the equipment of the core network transmitting path switching request message；

Receive the second data that the equipment of the core network is sent；

Wherein, the path switching request message is for requesting the equipment of the core network that the second data are sent to the target base It stands, second data are the user data that equipment of the core network is not sent to the source base station.

10. according to the method described in claim 8, it is characterized in that, true sending switching to source base station by equipment of the core network Recognize before message, the method also includes:

The switching request message that the source base station is sent by the equipment of the core network is received, the switching request message is for asking Ask user equipment (UE) switching to the target BS, the handoff request message includes: the first mapping relations, described first reflects Penetrate relationship are as follows: the sequence number PDCP SN of Packet Data Convergence Protocol and the sequence of user face general packet radio service tunnel agreement The mapping relations of row number GTP-U SN.

11. according to the method described in claim 10, it is characterized in that, the method also includes:

According to first mapping relations to the data for not being grouped data convergence protocol PDCP number in first data Packet and second data carry out PDCP number.

12. according to the method for claim 11, which is characterized in that the method also includes:

The first request message that the MEC server is sent is received, first request message is for requesting to the target base It stands and sends second data；

The first response message is sent to the MEC server, and sends the first notification message to the equipment of the core network, and lose The data packet that data convergence protocol PDCP number has been grouped in second data is abandoned, first response message is for true Recognize and receive second data that the MEC server is sent, first notification message is used to indicate the equipment of the core network Stop sending second data to the target BS；

Receive second data that the MEC server is sent.

13. a kind of method of switching cell, which is characterized in that be applied to source mobile management function to ps domain body AMF, the method packet It includes:

The switching request message that source base station is sent is received, the switching request message is for requesting user equipment (UE) from source cell Switch to Target cell；

The switching request message is sent to the target BS by target AMF；

Receive the switch acknowledgment message that the target BS is sent by the target AMF；The switch acknowledgment message is for true Recognize and the UE is switched into the Target cell from the source cell；

The switch acknowledgment message is sent to the source base station；

Wherein, the source cell is the cell of the source base station service, and the Target cell is the small of the target base station service Area, the handoff request message include: the first mapping relations；First mapping relations are as follows: the sequence of Packet Data Convergence Protocol The mapping relations of row number PDCP SN and the sequence number GTP-U SN of user face general packet radio service tunnel agreement.

14. a kind of method of switching cell, which is characterized in that be applied to target mobile management function to ps domain body AMF, the method packet It includes:

The switching request message is sent to the target BS；

Receive the switch acknowledgment message that the target BS is sent, the switch acknowledgment message is for confirming the UE from described Source cell switches to the Target cell；

15. according to the method for claim 14, which is characterized in that the method also includes:

Receive the path switching request message that the target BS is sent；

Target user face functive UPF, which is controlled, according to the path switching request message sends the second number to the target BS According to；

The path switching request message is for requesting the equipment of the core network that second data are sent to the target base It stands, second data are the user data that equipment of the core network is not sent to the source base station.

16. according to the method for claim 15, which is characterized in that the method also includes:

The first notification message that the target BS is sent is received, first notification message is used to indicate the equipment of the core network Stop sending second data to the target BS；

The target UPF is controlled according to first notification message to stop sending second data to the target BS.

17. a kind of base station characterized by comprising

Receiving unit, the switch acknowledgment message sent for receiving target BS by equipment of the core network, the switching confirmation disappear User equipment (UE) is switched to Target cell from the cell that the base station services for confirming by breath；

Transmission unit for sending switching command to the UE, and passes through mobile edge calculations MEC server to the target base It stands and sends the first data, the switching command is used to indicate the UE, and from the cell that the base station services to switch to the target small Area, the Target cell are the cell of the target base station service, and first data are equipment of the core network Xiang Suoshu The user data that source base station is sent and the source base station is not sent to the UE.

18. base station according to claim 17, which is characterized in that the transmission unit is also used to through the core net Equipment sends switching request message to the target BS, and the switching request message is for requesting the UE from the base station The cell of service switches to the Target cell, and the handoff request message includes: the first mapping relations, and first mapping is closed System are as follows: the sequence number PDCP SN of Packet Data Convergence Protocol and the sequence number of user face general packet radio service tunnel agreement The mapping relations of GTP-U SN.

19. a kind of mobile edge calculations MEC server characterized by comprising

Receiving unit, for receiving the first data of source base station transmission, first data are equipment of the core network to the source The user data that base station is sent and the source base station is not sent to user equipment (UE)；

Transmission unit, for sending first data to target BS；

20. MEC server according to claim 19, which is characterized in that the transmission unit is also used to cache in confirmation In the case where second data, Xiang Suoshu target BS sends the first request message, first request message for request to The target BS sends second data, and second data are the user that equipment of the core network is not sent to the source base station Data.

21. MEC server according to claim 20, which is characterized in that in the feelings for confirming uncached second data Under condition, the transmission unit is also used in the case where confirming that second data are stored in local network, Xiang Suoshu target base It stands and sends first request message.

22. MEC server according to claim 21, which is characterized in that be not stored in confirmation second data In the case where local network, the transmission unit is also used in the case where confirmation is with first server connection, Xiang Suoshu target Base station sends first request message；

The first server is the server for storing second data.

23. according to the described in any item MEC servers of claim 20-22, which is characterized in that

The receiving unit, is also used to receive the first response message that the target BS is sent, and first response message is used Second data that the MEC server is sent are received in confirmation；

The transmission unit is also used to send second data to the target BS.

24. a kind of base station characterized by comprising

Wherein, the switch acknowledgment message, which is used to confirm, switches to the small of the base station service from source cell for user equipment (UE) Area, the source cell are the cell of the source base station service, and first data are the equipment of the core network to the source base Stand transmission and the source base station not to the UE send user data.

25. base station according to claim 24, which is characterized in that

The transmission unit is also used to the equipment of the core network transmitting path switching request message；

The receiving unit is also used to receive the second data that the equipment of the core network is sent；

Wherein, the path switching request message is used to request the equipment of the core network that the second data are sent to the base station, Second data are the user data that equipment of the core network is not sent to the source base station.

26. base station according to claim 24, which is characterized in that the receiving unit is also used to receive the source base station The switching request message sent by the equipment of the core network, the switching request message switch user equipment (UE) for requesting To the target BS, the handoff request message is included: the first mapping relations, first mapping relations are as follows: packet data The mapping of the sequence number GTP-U SN of the sequence number PDCP SN and user face general packet radio service tunnel agreement of convergence protocol Relationship.

27. base station according to claim 26, which is characterized in that the base station further include: numbered cell；

The numbered cell, for being assisted according to first mapping relations to data convergence is not grouped in first data The data packet and second data for discussing PDCP number carry out PDCP number.

28. base station according to claim 27, which is characterized in that

The receiving unit, is also used to receive the first request message that the MEC server is sent, and first request message is used Second data are sent to the target BS in request；

The transmission unit, is also used to receive the first request message that the MEC server is sent, and first request message is used Second data are sent to the target BS in request；First notification message is used to indicate the equipment of the core network and stops Only second data are sent to the target BS；

The numbered cell is also used to abandon the data that data convergence protocol PDCP number has been grouped in second data Packet；

The receiving unit is also used to receive second data that the MEC server is sent.

29. a kind of mobile management function to ps domain body AMF characterized by comprising

Receiving unit, for receiving the switching request message of source base station transmission, the switching request message is for requesting user Equipment UE switches to Target cell from source cell；

The receiving unit is also used to receive the switch acknowledgment message that the target BS is sent by the target AMF；It is described The UE is switched to the Target cell from the source cell for confirming by switch acknowledgment message；

30. a kind of mobile management function to ps domain body AMF characterized by comprising

Receiving unit, the switching request message sent for receiving source base station by source AMF, the switching request message is for asking It asks and user equipment (UE) is switched into Target cell from the source cell；

Transmission unit, for sending the switching request message to the target BS；

The receiving unit, is also used to receive the switch acknowledgment message that the target BS is sent, and the switch acknowledgment message is used The UE is switched into the Target cell from the source cell in confirmation；

The transmission unit is also used to through the source AMF to switch acknowledgment message described in the source base station；

31. AMF according to claim 30, which is characterized in that the AMF further include: processing unit；

The receiving unit is also used to receive the path switching request message that the target BS is sent；

The processing unit, for controlling target user face functive UPF to the mesh according to the path switching request message It marks base station and sends second data；

32. AMF according to claim 31, which is characterized in that

The receiving unit, is also used to receive the first notification message that the target BS is sent, and first notification message is used Stop sending second data to the target BS in the instruction equipment of the core network；

The processing unit is also used to be stopped according to first notification message control target UPF to the target BS Send second data.

33. a kind of base station characterized by comprising processor, memory and be stored on the memory and can be at the place The computer program run on reason device, realizes such as claim 1,2,8-12 when the computer program is executed by the processor Any one of described in switching cell method the step of.

34. a kind of mobile edge calculations MEC server characterized by comprising processor, memory and be stored in described deposit On reservoir and the computer program that can run on the processor, the computer program are realized when being executed by the processor The step of method of switching cell as described in any one of claim 3-7.

35. a kind of mobile management function to ps domain body AMF characterized by comprising processor, memory and be stored in the storage On device and the computer program that can run on the processor, realized such as when the computer program is executed by the processor The step of method of switching cell described in any one of claim 13-16.

36. a kind of computer readable storage medium, which is characterized in that store computer journey on the computer readable storage medium Sequence realizes the method for the switching cell as described in any one of claim 1-16 when the computer program is executed by processor The step of.