CN108400847A

CN108400847A - Data transmission method and device

Info

Publication number: CN108400847A
Application number: CN201710064150.2A
Authority: CN
Inventors: 牛丽
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-02-04
Filing date: 2017-02-04
Publication date: 2018-08-14
Anticipated expiration: 2037-02-04
Also published as: CN108400847B; WO2018141181A1

Abstract

A kind of data transmission method is disclosed herein and device, the method may include：Target BS receives the first message of the UE from former base station, and the first message carries the contextual information of user equipment (UE)；Target BS receives the data that the UE is sent under default state, and the data are sent to core net；The default state refers to the state that the interface between UE and base station disconnects and the interface between base station and core net keeps connecting.The application makes UE in default state transmission packet, had not only conveniently adapted to UE in the mobility of non-default state, and but also can meet the delay requirement of business.

Description

Data transmission method and device

Technical field

The present invention relates to wireless communication technology field more particularly to a kind of data transmission methods and device.

Background technology

As shown in Figure 1, the relevant technologies Long Time Evolution system (LTE, Long Term Evolution) is mainly set by three Standby composition：User equipment (UE, User Equipment), core net (CN, Core Network) and base station (eNB, Evolved Node B), wherein the mobile management entity (MME, Mobility Management Entity) in core net is mainly responsible for letter The transmission of order, gateway (S-GW, Serving Gateway) are mainly responsible for the transmission of data.The interface of UE and eNB is Uu, ENB and the interface of core net are S1.

As shown in Fig. 2, for UE, protocol layer is related to the agreement framework of UE, eNB and MME：Wireless heterogeneous networks (RRC, Radio Resource Control), Packet Data Convergence Protocol (PDCP, Packet Data Convergence Protocol), wireless spread-spectrum technology (RLC, Radio Link Control), media access control (MAC, Medium Access Control) and physical layer (PHY, Physical Layer), belong to access layer (AS, Access Stratum), and AS layers of height Layer is Non-Access Stratum (NAS, Non Access Stratum).

Currently, ultrahigh reliability and ultralow time delay business (URLLC, Ultra Reliable＆Low Latency Communication it) can be widely applied in real life, such as：Medical treatment, traffic etc..Due to the application scenarios of this business It needs to ensure very high accuracy and renewal speed, so the characteristic of this business determines that its data packet needs to obtain in time It transmits.Now, it is 0.5ms that the demand to URLLC business, which is upstream and downstream user face time delay, wherein user plane time delay refer to by The data packet or message of one application layer are transferred to the time of opposite end radio protocol layer from radio protocol layer by wireless interface.

When UE is in connected state, base station can by timely dispatching, the user plane of smaller transmission interval or optimization It handles to reach requirement.

Invention content

In order to solve the above-mentioned technical problem, an embodiment of the present invention provides a kind of data transmission method and devices.

In order to reach the object of the invention, the present invention provides a kind of data transmission methods, including：

The first message from first base station is received, the first message carries the contextual information of user equipment；

Confirmation message is sent to the first base station.

Optionally, further include：

Configuration parameter of the confirmation message carrying user equipment in this base station transmission data.

Optionally, further include：

The data that the user equipment is sent under default state are received, and the data are sent to core net；It is described pre- If state refers to the state that the interface between user equipment and base station disconnects and the interface between base station and core net keeps connecting.

Optionally, further include：

Reception is used to indicate the first identifier information for transmitting the customer equipment context information.

Optionally, the contextual information of the user equipment includes at least following one：The mark of user equipment, Yong Hushe Standby ability information, user apparatus service information, the public land mobile network identity of user equipment selection and tracing area The service configuration information of code, the reference signal configuration information of user equipment, user equipment.

Optionally, further include：

According to the contextual information of the user equipment, the mobile management entity application selected to the user equipment is established For the connection of the user apparatus service.

Optionally, the contextual information according to the user equipment is established to mobile management entity application and is directed to institute The connection of user apparatus service is stated, including：

According to the contextual information of the user equipment, the mobile management entity selected before to the user equipment is sent Request message, the request message, which carries, is used to indicate the second identifier information for establishing the connection；

The confirmation message of the mobile management entity feedback is received, the confirmation message is at least carried to be set for the user Gateway side GPRS Tunnel Protocol, tunneling termination identifier and the transport Layer address of standby business.

Optionally, the request message is switching request or the message that path integration is asked or newly defined.

Optionally, the mobile management entity application selected to the user equipment is established for the user apparatus service After connection, further include：

The upstream data that the user equipment is sent using the connection is sent to core net, or from core net reception The downlink data of the user equipment.

Optionally, further include following one：

All connections of the user equipment in this base station are discharged to the mobile management entity application；

All connections of the user equipment are discharged to the mobile management entity application and establish the user equipment at this The connection of base station；

All connections of the user equipment other than this base station are discharged to the mobile management entity application.

It is optionally, described to discharge all connections of the user equipment in this base station to the mobile management entity application, Including：

Request message is sent to the mobile management entity, the request message, which at least carries, to be used to indicate described in release Third identification information of the user equipment in all connections in this base station.

Optionally, described to discharge all connections of the user equipment to the mobile management entity application and establish the use Family equipment this base station connection, including：

Request message is sent to the mobile management entity, the request message at least carries the 4th identification information, institute It states the 4th identification information and is used to indicate all connections established for the user equipment before the mobile management entity is deleted, and Re-establish connection of the user equipment in this base station.

Optionally, described to discharge all companies of the user equipment other than this base station to the mobile management entity application It connects, including：

Request message is sent to the mobile management entity, the request message at least carries the 5th identification information, institute It states the 5th identification information and is used to indicate the mobile management entity and delete all connections of the user equipment other than this base station.

The present invention also provides a kind of data transmission devices, including：

First receiving module, for receiving the first message from first base station, the first message carries user equipment Contextual information；

First sending module, for sending confirmation message to the first base station.

Optionally, further include：

First transmission module, the data sent under default state for receiving the user equipment, and the data are sent out It send to core net；The default state refers to the interface disconnection between user equipment and base station and the interface between base station and core net Keep the state of connection.

Optionally, further include：

First establishes link block, for the contextual information according to the user equipment, is selected to the user equipment Mobile management entity application establish for the user apparatus service connection.

Optionally, described first link block is established, is additionally operable to execute one of following：

The present invention also provides a kind of equipment of work in wireless communications, including：Processor and memory,

The processor is used for：

The first message of the user equipment from first base station is received, the first message carries the context of user equipment Information；

Confirmation message is sent to first base station, the confirmation message carries configuration of the user equipment in this base station transmission data Parameter,

The data that the user equipment is sent under default state are received, and the data are sent to core net；It is described pre- If state refers to the state that the interface between user equipment and base station disconnects and the interface between base station and core net keeps connecting；

The memory is coupled with the processor.

The present invention also provides a kind of computer program products including computer-readable medium comprising：

Code is received, is used to receive the first message of the user equipment from first base station, the first message carries The contextual information of user equipment；

Code is sent, is used to send confirmation message.

Invention further provides a kind of data transmission methods, including：

Determine user equipment in the second base station of one or more of the possible transmission data of default state；

The contextual information of the user equipment is sent to one or more of second base stations.

Optionally, further include：

Receive the measurement report of the user equipment to report；

One or more second base stations are determined according to the measurement report.

Optionally, further include：

The confirmation message from second base station is received, the confirmation message carries the user equipment described second The configuration parameter of base station transmission data.

Optionally, further include：

The second base station information is sent to the user equipment, second base station information includes the user equipment default The mark of the available one or more of target BS of state transmission data and the configuration parameter of the transmission data.

The present invention provides a kind of data transmission method again, including：

Receive any one target BS transmission user equipment enter the instruction information of connected state after, discharge the use The context of family equipment and the customer equipment context message for notifying the release of other target BS described；Alternatively,

After receiving the instruction of the release customer equipment context information of any one target BS transmission, release The context of the user equipment and the customer equipment context message for notifying the release of other target BS described.

The present invention also provides a kind of wireless communication apparatus, including：

Determining module, for determining the user equipment in the second base of one or more for presetting the possible transmission data of state It stands；

Second sending module, the context for sending the user equipment to one or more of second base stations are believed Breath.

The present invention has been provided with a kind of equipment of work in wireless communications, including：

Processor is used for：

Determine the user equipment in the second base station of one or more of the possible transmission data of default state；

Memory is coupled with the processor.

It determines code, is used to determine the user equipment in the second base of one or more for presetting the possible transmission data of state It stands；

Code is sent, is used to send the contextual information of the user equipment to one or more of second base stations.

The present invention also provides a kind of data transmission methods, including：

User equipment receives the X message for the second base station of one or more that first base station is sent, and the X message carries The mark of second base station and the configuration parameter of transmission data；

The user equipment will need the data sent to be sent to one or more of target BS in default state；

Wherein, the default state refer to interface between the user equipment and the base station disconnect and the former base station with Interface between core net keeps the state of connection.

Optionally, further include that the user equipment receives downlink data from the target BS.

Invention further provides a kind of data transmission devices, including：

Configuration module, the X message of the second base station of one or more for receiving first base station transmission, the X disappear Breath carries the mark of second base station and the configuration parameter of transmission data；

Second transmission module, for the data sent will be needed to be sent to one or more of target bases in default state It stands；

The present invention provides a kind of user equipment again, including：Processor is used for：

Receive the mark for one or more target BS that base station is sent and the configuration parameter of transmission data；

The data sent will be needed to be sent to one or more of target BS in default state；

The default state refers to the interface disconnection between the user equipment and the base station and the former base station and core Interface between net keeps the state of connection,

Memory is coupled with the processor.

Code is received, is used to receive the mark of one or more target BS and the matching for transmission data of base station transmission Set parameter；

Code is sent, is used to the data sent will be needed to be sent to one or more of target BS in default state.

In another aspect, the embodiment of the present application also provides a kind of computer readable storage medium, it is executable to be stored with computer Instruction, the computer executable instructions, which are performed, realizes the data transmission method for being applied to target BS.

In another aspect, the embodiment of the present application also provides a kind of computer readable storage medium, it is executable to be stored with computer Instruction, the computer executable instructions, which are performed, realizes the data transmission method for being applied to former base station.

In another aspect, the embodiment of the present application also provides a kind of computer readable storage medium, it is executable to be stored with computer Instruction, the computer executable instructions, which are performed, realizes the data transmission method for being applied to UE.

In another aspect, the embodiment of the present application also provides a kind of computer readable storage medium, it is executable to be stored with computer Instruction, the computer executable instructions, which are performed, realizes the data transmission method for being applied to MME.

Data transmission method in the embodiment of the present invention and device, by former base station determine possible target BS and to this A little target BS transmit the contextual information of UE, then more to core net application foundation based on the contextual information of UE from target BS Then a S1 connections are utilized these S1 connections to transmit the data packet from UE, are sent data packet using the S1 connections having built up To core net, with improve UE under inactive state transmitted URLLC data packets core net transmission rate, it is suitable to both be convenient for It answers UE in the mobility of inactive state, and the delay requirement of URLLC business can be met.

Data transmission method in the embodiment of the present invention and device, after the data packet from UE is transmitted or UE is true It sets the goal after base station, the target BS that UE is not accessed can discharge corresponding S1 connections to core net application, to avoid occupancy Internet resources.

The application is applicable to current and Next-Generation Wireless Communication Systems.

Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages can be by specification, rights Specifically noted structure is realized and is obtained in claim and attached drawing.

Description of the drawings

Attached drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with this The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.

Fig. 1 is LTE Organization Charts in the related technology；

Fig. 2 is the agreement configuration diagram of UE, eNB and MME in the related technology；

Fig. 3 is the data transmission method flow chart for being applied to target BS in the application；

Fig. 4 is the composed structure schematic diagram for the data transmission device for being applied to target BS in the application；

Fig. 5 is the data transmission method flow chart for being applied to former base station in the application；

Fig. 6 is the composed structure schematic diagram for the data transmission device for being applied to former base station in the application；

Fig. 7 is the data transmission method flow chart for being applied to UE in the application；

Fig. 8 is the composed structure schematic diagram of the data transmission device applied to UE in the application；

Fig. 9 is the data transmission method flow chart for being applied to MME in the application；

Figure 10 is the composed structure schematic diagram for the data transmission device for being applied to MME target BS in the application；

Figure 11 is the flow diagram that UE contextual informations are transmitted in the embodiment of the present application；

Figure 12 is the flow diagram that S1 connections are established in the embodiment of the present application；

Figure 13 is the flow diagram of data transmission procedure in the embodiment of the present application.

Specific implementation mode

To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application Feature mutually can arbitrarily combine.

Step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructions It executes.Also, although logical order is shown in flow charts, and it in some cases, can be with suitable different from herein Sequence executes shown or described step.

In the related technology, when UE is in inactive state, the Uu skies connection of UE is already off, and the connection of S1 is also kept, such as Fruit UE has the data packet of URLLC to send, and needs to re-establish Uu and eats dishes without rice or wine to connect, and especially UE is needed according to traditional flow： Initiating random access procedure then sets up RRC connections, is transferred to connected state, this just needs to spend longer time, cannot be satisfied The low time delay demand of URLLC.In summary, a kind of transmission side that UE can be made to send URLLC data packets in inactive state is needed Case had not only conveniently adapted to UE in the mobility of inactive state, and but also can meet the delay requirement of URLLC business.

With the maturation of non-orthogonal techniques, UE can send upstream data packet by unauthorized competitive way, then when When UE is in activated state, if UE has the data packet of URLLC to send, UE can be by directly by sending in a manner of unauthorized to base station Data packet.But since UE is mobile, under inactive state, UE can reselect cell, and be sent out to the cell newly selected Data are sent, at this moment, the cell newly selected does not have the information of UE, just can not be by the data delivery of UE to core net.On the other hand, such as The UE marks that the cell that fruit newly selects is carried by upstream data find the cell that UE was accessed originally, and the data of UE are submitted to Originally the cell accessed, then can be relatively time-consuming, cannot be satisfied the delay requirement of URLLC business.Alternatively, if the cell newly selected The UE marks carried by upstream data find UE contexts, and the connection of S1 is established for UE, this process also can be relatively time-consuming, It cannot be satisfied the delay requirement of URLLC business.As it can be seen that the relevant technologies all cannot make UE meet URLLC industry under inactive state The delay requirement of business.

The present embodiment provides a kind of data transmission method and devices, can at least solve the above problems.

As shown in figure 3, the present embodiment provides a kind of data transmission methods, including：

Step 301, target BS receives the first message of the UE from former base station, and the first message carries user equipment The contextual information of UE；

Step 302, target BS receives the data that the UE is sent under default state, and the data are sent to core Net；The default state refers to the shape that the interface between UE and base station disconnects and the interface between base station and core net keeps connecting State.

Wherein, the UE is under default state, the default state refer to the interface between the UE and the base station disconnect and Interface between the former base station and core net keeps the state of connection；The target BS refers to the UE in moving process The base station and the target BS that may be accessed are at least one.

In practical application, the contextual information of the UE may include：The mark of UE, ability information, business information, selection PLMN ID and TAC, reference signal configuration information, service configuration information.

In the present embodiment, the target BS preserves the UE contextual informations, and sends and confirm to the former base station Configuration parameters of the confirmation message carrying UE in the target BS transmission data described in message.The target BS is former base station root The one or more base stations that may be accessed in moving process determined according to the measurement report of the UE.

In some implementations, target BS, which receives, is used to indicate the first identifier for transmitting UE contextual informations letter Breath.In this way, target BS can identify UE context informations and be preserved according to first identifier information.

In some implementations, after the contextual information of target BS acquisition UE, can also include：The target base The contextual information stood according to the UE establishes the S1 connections for UE business to core net application.Specifically, the target base Standing can be according to the contextual information of the UE, and the MME selected before to the UE sends request message, and the request message is used The S1 connections of the UE business are established in application, the request message, which carries, is used to indicate the establish the S1 connections second mark Know information；Later, the target BS receives the confirmation message of the MME feedbacks, and the confirmation message, which at least carries, is directed to institute State the sides the S-GW GPRS Tunnel Protocol-tunneling termination identifier (GTP-TEID) and transport Layer address of UE business.

In practical application, the request message can be switching request or the message that path integration is asked or newly defined.

In some implementations, target BS application is established after the S1 connections for UE business, can also include：Institute It states target BS and is sent to institute to core net, or from core net reception using the upstream data of the S1 connections transmission UE State the downlink data of UE.

Specifically, the target BS is connected to transmission data between the UE and core net using the S1, including such as One or both of lower combination：1) target BS receives upstream data packet from the UE, for the UE business, According to the sides the S-GW GTP-TEID and transport Layer address of the UE business, the upstream data packet is sent to core net；2) described Target BS receives the downlink data packet from core net according to the sides the S-GW GTP-TEID and transport Layer address of the UE business And it is sent to the UE.

In some implementations, target BS application establish for UE business S1 connections after, further include it is following it One：

1) target BS discharges all S1 connections of the UE in this base station to MME applications；

2) target BS connects to MME application releases all S1 of UE and establishes S1 connections of the UE in this base station；

3) target BS discharges all S1 connections of the UE other than this base station to MME applications.

Specifically, described discharge the UE in all S1 connections of this base station to MME applications, may include：It is described Target BS sends request message to the MME, and the request message, which at least carries, is used to indicate release all S1 connections of UE Third identification information so that the MME deleted after receiving the request message on the target BS for UE establish All S1 connections.

Specifically, the target BS connects to MME application releases all S1 of UE and establishes the S1 of other business of UE It connects, may include：The target BS sends the request message for carrying the 4th identification information to MME so that the MME exists It receives and connects and re-establish the UE other business before deleting after the request message for all S1 that UE is established in institute State the S1 connections of target BS；Wherein, the 4th identification information is used to indicate all S1 connections that release is established before.

It, can be with specifically, the target BS discharges all S1 connections of the UE other than target BS to MME applications Including：Target BS sends the request message for carrying the 5th identification information to MME so that the MME is receiving the request All S1 connections established in addition to current base station S1 connections, before for the UE are deleted after message；Wherein, the 5th mark Know all S1 connections that information is used to indicate the UE of the release in addition to current base station S1 connections.

Correspondingly, as shown in figure 4, the present embodiment also provides a kind of data transmission device, it is applied to target BS, including：

First receiving module 40, for receiving the first message from former base station, the first message carrying UE or more Literary information and/or current message is used to indicate for transmitting the first identifier information of context；

First transmission module 41, the data sent under default state for receiving the UE, and the data are sent to Core net；The default state refers to that the interface between UE and base station disconnects and the interface between base station and core net keeps connection State.

In addition, above-mentioned data transmission device can also include：

Preserving module 42, for the contextual information of the UE to be preserved,

First sending module 43 carries UE in the mesh for sending confirmation message described in confirmation message to the former base station Mark the configuration parameter of base station transmission data.

In some implementations, the data transmission device can also include：First establishes link block 44, is used for root According to the contextual information of the UE, the S1 connections for UE business are established to core net application.

In some implementations, described first link block 44 is established, can be also used for executing one of following：1) to institute The MME applications selected before stating UE discharge all S1 connections of the UE in current base station；2) to described in MME application releases All S1 of UE are connected and are established the S1 connections of other business of UE；3) UE is discharged other than target BS to MME applications All S1 connections.

It should be noted that data transmission device shown in Fig. 4 can realize data transmission method shown in Fig. 3 in the present embodiment All details, repeat no more.

As shown in figure 5, the method that the present embodiment also provides another data transmission, including：

Step 501, the measurement report that former base station is reported according to UE determines that the UE may access one or more target bases It stands；

Step 502, former base station sends the contextual information of the UE to one or more of target BS.

Wherein, for the UE in default state transmission data, the default state refers to one or more of target BS Interface between the UE and the base station disconnects and the interface between the former base station and core net keeps the state connected.

In some implementations, the former base station receives the confirmation message from the target BS, and the confirmation disappears Configuration parameters of the breath carrying UE in the target BS transmission data；The former base station by the mark of the target BS with And the configuration parameter of the transmission data is sent to the UE.

In practical application, former base station can send the first message by X2 interface to the target BS.

In some implementations, when the target BS is multiple, the former base station is getting any one target After the UE that base station is sent enters the instruction information of connected state, discharges the context of the UE and other target BS is notified to release Put the UE context messages；Alternatively, the former base station is in the release UE for receiving the transmission of any one target BS After the instruction of contextual information, discharges the context of the UE and the UE contexts for notifying the release of other target BS described disappear Breath.

Correspondingly, the present embodiment also provides another data transmission device, it is applied to former base station, as shown in fig. 6, can wrap It includes：

Determining module 61, the measurement report for being reported according to UE determine that the UE may access one or more targets Base station；

Second sending module 62, the contextual information for sending the UE to one or more of target BS.

It should be noted that data transmission device shown in Fig. 6 can realize data transmission method shown in Fig. 5 in the present embodiment All details, repeat no more.

As shown in fig. 7, the method that the present embodiment also provides another data transmission, including：

Step 701, UE receives the mark for one or more target BS that base station is sent and the configuration ginseng of transmission data Number；

Step 702, the UE will need the data packet sent to be sent to the target BS in default state；

Wherein, the default state refers to that interface between the UE and the base station disconnects and the former base station and core net Between interface keep connection state.

As shown in figure 8, the present embodiment also provides another data transmission device, it is applied to UE, including：

Configuration module 81, be used for configuration module, for receive base station transmission one or more target BS mark with And the configuration parameter of transmission data；

Second transmission module 82, for the data packet sent will be needed to be sent to the target BS in default state；

It should be noted that data transmission device shown in Fig. 8 can realize data transmission method shown in Fig. 7 in the present embodiment All details, repeat no more.

As shown in figure 9, the method that the present embodiment also provides another data transmission, including：

Step 901, MME receives the request message from least one target BS, and the request message is built for applying The S1 connections of the UE business are stood, the request message carries the second identifier information for being used to indicate and establishing S1 connections；

Step 902, for MME according to the request message, respectively described at least one target BS, which is established, is directed to the UE The S1 connections of business, and notify S-GW connects and binds the S1 of at least one target BS to the UE business to correspond to Packet data network PDN connections；

Step 903, MME receives the confirmation message that the S-GW is returned, and the confirmation message carries the S- of the UE business The sides GW GTP-TEID and transport Layer address；

Step 904, MME sends confirmation message at least one target BS respectively, and the confirmation message carries institute State the sides the S-GW GTP-TEID and transport Layer address of UE business；

Wherein, the UE is under default state, the default state refer to the interface between the UE and the base station disconnect and Interface between the former base station and core net keeps the state of connection；The target BS refers to the UE in moving process The base station that may be accessed.

In some implementations, after establishing S1 connections, the above method can also include one of following：

1) MME receives the request message from the target BS, and the request message is at least carried for referring to Show the third identification information for discharging all S1 connections of UE；It deletes and connects for all S1 that UE is established on the target BS It connects, and the S-GW is notified to update the binding of corresponding S1 connections PDN corresponding with the UE business；

2) MME receives the request message from the target BS, and the request message at least carries the 4th mark Information, all S1 before deleting for UE foundation are connected and re-established other business of the UE to be connected in the S1 of the target BS It connects, and the S-GW is notified to update the binding of corresponding S1 connections PDN corresponding with the UE business；Wherein, the 4th mark letter Breath is used to indicate all S1 connections that release is established before；

3) MME receives the request message from the target BS, and the request message at least carries the 5th mark Information deletes all S1 connections established in addition to current base station S1 connections, before for the UE, and the S-GW is notified to update The binding of corresponding S1 connections PDN corresponding with the UE business, wherein the 5th identification information is used to indicate release and removes current base All S1 connections of the UE to stand except S1 connections.

Correspondingly, the present embodiment additionally provides another data transmission device, it is applied to MME, as shown in Figure 10, including：

Second establishes link block 1001, for receiving the request message from least one target BS, the request Message is used to apply establishing the S1 connections of the UE business, and the request message, which carries to be used to indicate, establishes the second of S1 connections Identification information；And for according to the request message, respectively described at least one target BS, which is established, to be directed to the UE industry The S1 connections of business；

Notification module 1002, for notifying S-GW to connect and bind the S1 of at least one target BS to described The corresponding packet data network PDN connections of UE business；

Third receiving module 1003, the confirmation message returned for receiving the S-GW, described in the confirmation message carries The sides the S-GW GTP-TEID and transport Layer address of UE business；

Third sending module 1004, for sending confirmation message, the confirmation at least one target BS respectively Message carries the sides the S-GW GTP-TEID and transport Layer address of the UE business；

It should be noted that data transmission device shown in Figure 10 can realize data transmission method shown in Fig. 9 in the present embodiment All details, repeat no more.

In practical application, since UE needs constantly to access new base station on the move, the target BS in the present embodiment is Refer to the one or more base stations that may be accessed due to movement UE, which can be by the former base station of UE according to the measurement of UE Report determines.

In the present embodiment, the contextual information of UE is transmitted to target BS by former base station, then UE is based on by target BS Contextual information establish multiple S1 connections to core net application, then utilize these S1 connections transmission the data packet from UE, Data packet is sent to core net using the S1 connections having built up, to improve UE transmitted URLLC data packets under inactive state In the transmission rate of core net, to not only conveniently adapt to UE in the mobility of inactive state, but also the time delay of URLLC business can be met It is required that.

The application is described in detail below by specific example.Assuming that UE is in a kind of default state, and under default state, the Uu of UE Mouth disconnects and S1 mouthfuls keep connection.

Embodiment 1

In order to reduce the time delay that target BS obtains UE contexts, UE contexts can be stored on multiple base stations.

The measurement report that former base station can be reported according to UE judges the base station i.e. target BS that UE can move into.Example Such as, the measurement report that former base station is reported according to UE, when the signal strength for measuring target BS is higher than some threshold value, it is believed that UE may be moved to these target BS.At this point it is possible to which the contextual information of UE is passed to these target bases by former base station It stands.

As shown in figure 11, the process that the contextual information of UE is passed to target BS by former base station may include：

Step 1101, former base station is sent out to these target BS (passing through the interactive interface between base station, such as X2 interface) of UE Send first message, the first message that can carry the first identifier information and UE that instruction current message is used to transmit context Context information；

In practical application, the first message can be switching request (HANDOVER REQUEST) or what is newly defined disappear Breath etc..Wherein, if message itself includes the contextual information of UE, can only carry above-mentioned instruction current message for transmit First identifier information hereafter can carry above-mentioned first identifier information if message itself does not include the contextual information of UE With the contextual information of UE.In this way, the contextual information of UE can be transmitted to these target bases by former base station by first message It stands.

Wherein, the contextual information of UE may include one of following or its arbitrary combination：UE mark (such as：resume ID and Temporary Mobile Subscriber Identity (S-TMSI, Serving Temporary Mobile Subscriber Identity)), energy Force information, business information (such as：Service quality (Qos, Quality of Service), ERAB ID etc.), UE selection it is public Land mobile network (PLMN, Public Land Mobile Network) identity (ID) and Tracking Area Code (TAC, Tracking area code), the reference signal of UE and service configuration information (such as business Data Radio Bearer (DRB, Data Radio Bearer) configuration parameter) etc..

Step 1102, these target BS of UE receive the first message from former base station, therefrom get the upper and lower of UE Literary information simultaneously preserves, and establishes corresponding context for UE, and feeding back confirmation message gives the former base station.

In practical application, above-mentioned confirmation message can be Handover Request Acknowledge (HANDOVER REQUEST ACKNOWLEDGE the message) or newly defined.

Embodiment 2

To ensure that the data packet of business is transferred to core net in time, multiple S1 connections can be established for a business.

Possible multiple target BS can establish S1 connections for the business of UE.

As shown in figure 12, the process for establishing S1 connections may include：

Step 1201, multiple S1 connections are established in MME request of multiple target BS respectively to selection before UE；

Specifically, multiple target BS find the MME selected before UE according to UE PLMN ID, the TAC selected respectively, so The S1 connections of business are established in backward MME requests.

Wherein, target BS can apply for establishing S1 connections by sending request message to MME, and the request message is taken Band is used to indicate the second identifier information for establishing S1 connections.In practical application, the request message can be between base station and MME HANDOVER REQUIRE, message path transfer request (PATH SWITCH REQUEST) or newly define.

In addition, can also be carried in above-mentioned request message the evolution for business radio access bearer (ERAB, Evolved Radio Access Bearer) information (such as ERAB ID), target BS GPRS Tunnel Protocol-tunneling termination mark Will is with according with (GTP-TEID, GPRS Tunnelling Protocol-Tunnel Endpoint Identifier) and transport layer Location.

Step 1202, MME asks to bind to S-GW；

It is established after the request message of S1 connections specifically, MME receives above-mentioned multiple target BS applications, according to therein UE is identified and ERAB information, confirms that the S1 connections of the business have been established in the UE, then receives request, respectively in above-mentioned multiple targets The S1 connections of a business are established on base station, and S-GW is notified there are multiple S1 connections to correspond to a business, in the notice Carry ERAB ID of the business, the GTP-TEID of target BS and transport Layer address.

Step 1203, S-GW confirms to MME and binds；

Specifically, after S-GW receives the above-mentioned notice from MME, by the corresponding PDN connections of the business and the industry All S1 of business are connected and bound, and return to the sides S-GW that confirmation message carries the business to the MME, in the confirmation message GTP-TEID and transport Layer address.

Step 1204, MME returns to confirmation message to multiple target BS respectively.

Specifically, the MME to target BS return confirmation message, and carry the business the sides S-GW GTP-TEID and Transport Layer address, so far, multiple S1 connections of corresponding multiple target BS, which are established, to be completed, and each target BS can be directly sharp With corresponding S1 connections transmission data, in this way, can ensure that each business data packet of UE is transferred to core net in time.

When some business of UE has the arrival of upstream data packet, any one mesh in above-mentioned multiple target BS may be selected Base station is marked, sends upstream data packet to the target BS, which receives the upstream data packet, connected by above-mentioned S1 It is sent to S-GW, S-GW receives the upstream data packet and is committed to corresponding packet data network (Public Data Network, PDN).

When some business of UE has downlink data packet arrival, S-GW can be more parts by downlink data packet replication, send respectively It gives the business corresponding multiple S1 connections, the UE is sent to by the corresponding target BS of multiple S1 connections.

The present embodiment can be carried out at the same time for multiple business of UE, be equally applicable to the different kinds of business of UE.

Embodiment 3

To ensure that the data packet of UE can be transmitted to core net by base station in time under default state, can establish UE in multiple cells S1 connections.

As shown in figure 13, it is that the process that UE establishes S1 connections may include in multiple cells：

Step 1301：UE reporting measurement reports give former base station.

Step 1302：UE context transfers are carried out between former base station and target BS；

Wherein, former base station transmits the contextual information of UE to possible target BS according to the measurement report；

Specifically, the measurement report that former base station can be reported according to UE, measures the signal strength of each target BS, when certain When the signal strength of a little target BS is higher than some threshold value, then it is assumed that UE may be moved to these target BS.Former base It stands and first message is sent by X2 interface to these target BS, the context transfer of UE to target BS, described first is disappeared Breath can carry the first identifier information and UE contextual informations that instruction current message is used to transmit context；

Wherein, the contextual information of UE may include one of following or its arbitrary combination：UE mark (such as：resume ID and Temporary Mobile Subscriber Identity (S-TMSI, Serving Temporary Mobile Subscriber Identity)), energy Force information, business information (such as：Service quality (Qos, Quality of Service), ERAB ID etc.), UE selection it is public Land mobile network (PLMN, Public Land Mobile Network) ID and Tracking Area Code (TAC, Tracking area Code), the reference signal of UE and service configuration information (Data Radio Bearer (DRB, the Data Radio of such as business Bearer parameter) is configured) etc..

Step 1303：Each target BS establishes S1 connections to MME applications；

Specifically, multiple target BS find the MME selected before UE according to UE PLMN ID, the TAC selected respectively, so The S1 connections of transmission services under the default state are supported in backward MME applications, and carry ERAB ID of the business, target base The GTP-TEID and transport Layer address to stand.

Step 1304：MME applies binding to S-GW；

Specifically, MME according to UE marks and ERAB information, confirms that the S1 connections of the business have been established in UE, then to S-GW Application connects and binds the multiple S1 to a PDN connection, and carries the GTP- of ERAB ID of the business, target BS TEID and transport Layer address.

Step 1305：S-GW confirms to MME to be bound；

Specifically, S-GW the corresponding PDN connections of the business and new S1 are connected and bound and return confirmation message to MME, and carry the sides the S-GW GTP-TEID and transport Layer address of business.

Step 1306：MME returns to confirmation message to target BS, and carries the sides the S-GW GTP-TEID and biography of the business Defeated layer address.

Step 1307：S-GW side GTP-TEID and transmission of each target BS according to business described in the confirmation message Layer address generates configuration parameters of the UE by target BS transmission data, and to former base station feeding back confirmation message, described true Recognize message carry UE target BS transmission data configuration parameter.

Step 1308：Complete the configuration of UE in former base station.

Specifically, former base station sends message to UE, the message carries UE in each target for presetting state transmission data The configuration parameter of the mark of base station and UE in each target BS transmission data.In practical application, the message can be with It is：RRC connection reconstructions message (RRCConnectionReconfiguration), RRC connection release message (RRCConnectionRelease) or newly the message defined.

After the configuration that UE is completed at former base station, UE can carry out the transmission of data packet using multiple target BS.Specifically , when some business of UE has the arrival of upstream data packet, may be selected any one or more in above-mentioned multiple target BS Target BS sends upstream data packet to selected target BS, and receives the upstream data packet by these target BS S-GW is sent to by above-mentioned S1 connections later, S-GW receives the upstream data packet and is committed to corresponding packet data network (Public Data Network, PDN).When some business of UE has downlink data packet arrival, S-GW can be by downlink data packet More parts are replicated, the corresponding multiple S1 connections of the business is sent respectively to, is sent to by the corresponding target BS of multiple S1 connections The UE.

In the present embodiment, the realization details of step 1303 to step 1306 please refers to related record in embodiment 2.

Embodiment 4

After each target BS establishes S1 connections, when confirming that UE need not use these S1 connections (for example, UE is full Foot is when entering the condition of connected state from default state) or after no longer accessing these target BS (for example, the UE access target When base station except base station) it can be by corresponding S1 Connection Releases, to avoid Internet resources are occupied.

Specifically, when UE is in default state, a target BS has been accessed again, if UE, which meets from default state, enters company The condition of state is connect, target BS needs to enter connected state in target BS to former base station instruction UE.

Wherein, since target BS preserves the contextual information of UE, target BS can restore the connected state of UE.Institute With target BS can discharge flow by UE contexts, and instruction former base station UE enters connected state in target BS, in this way, can To initiate the process of release UE contexts by former base station, the mistake of release UE contexts is initiated at former base station to other target BS again Journey.

Since other target BS may have the S1 connections of certain business of UE, other target BS are receiving former base It stands after the UE context release messages sent, needs to apply for the corresponding S1 connections of itself of release to MME.Specifically, other targets Base station can send request message by the interface (such as S1 interfaces) between base station and core net, and the request message carries useful The third identification information of all S1 connections of the UE is discharged in instruction.In practical application, which can be specifically E- RAB release instructions (E-RAB RELEASE INDICATION) or the message newly defined.It can also be taken in the request message With UE marks and ERAB information.

MME receives the above-mentioned request message from target BS, according to UE marks and ERAB information, whether confirms corresponding UE Multiple S1 connections of the business have been established, if it is, the S1 for deleting the business established on the target BS connects It connects, and S-GW is notified to delete the S1 connections of the business on target BS, by S-GW by S1 connections PDN corresponding with the business It is unbinding.So far, the release of S1 connections on each target BS is completed.

In practical application, the condition that UE satisfactions enter connected state from default state can be judged by the following two kinds mode：1) Target BS monitors that UE meets condition；2) UE to target BS report application enter connected state (such as： RRCConnectionResumeRequest)。

Embodiment 5

Specifically, when UE is in default state, a target BS has been accessed again, if UE, which meets from default state, enters company The condition for connecing state, since target BS may only establish the S1 connections of UE partial services, target BS needs to establish other industry The S1 connections of business.

At this point, in the S1 connections for establishing other business, all S1 connections established before the UE can all be deleted, then It re-establishes UE and enters connected state, S1 connections in the target BS.Specifically, the target BS is carried by sending There is the request message of the 4th identification information to be what UE was established before notifying MME, MME to be deleted after receiving the request message All S1 are connected and are re-established S1 connections of the UE in target BS, while notifying S-GW, will be before UE foundation by S-GW All S1 connections PDN corresponding with the business is unbinding, and newly-established S1 connections PDN corresponding with the business is tied up It is fixed.Wherein, the 4th identification information is used to indicate all S1 connections that release is established before.The request message specifically can be with The message for being PATH SWITCH REQUEST or newly defining.

Alternatively, in the S1 connections for establishing other business, it can be by all S1 connections of the UE except target BS all It deletes.Specifically, the target BS carries the request message of the 5th identification information to notify MME, MME connecing by transmission All S1 deleted in addition to current base station S1 connections, before for UE foundation after the request message are received to connect and notify S-GW, it is by S-GW that all S1 connections in addition to current base station S1 connections, before for UE foundation are corresponding with the business PDN is unbinding.Wherein, the 5th identification information is used to indicate the institute of the UE of the release in addition to current base station S1 connections There are S1 connections.The request message can be specifically PATH SWITCH REQUEST or the message that newly defines.

In addition, the present embodiment also provides another data transmission device, including：Processor and memory, the transmission dress It sets and is applied to target BS, the memory is stored with computer executable instructions, and the computer executable instructions are described Processor realizes following method when executing：

The first message of the UE from former base station is received, the first message carries the contextual information of user equipment (UE)；

The data that the UE is sent under default state are received, and the data are sent to core net；The default state is Refer to the state that the interface between UE and base station disconnects and the interface holding between base station and core net connects.

In addition, the present embodiment also provides another data transmission device, including：Processor and memory, the transmission dress It sets and is applied to former base station, the memory is stored with computer executable instructions, and the computer executable instructions are by the place Reason device realizes following method when executing：

The measurement report reported according to UE determines that the UE may access one or more target BS；

The contextual information of the UE is sent to one or more of target BS.

In addition, the present embodiment also provides another data transmission device, including：Processor and memory, the transmission dress It sets and is applied to UE, the memory is stored with computer executable instructions, and the computer executable instructions are by the processor Following method is realized when execution：

The data packet sent will be needed to be sent to the target BS in default state；

In addition, the embodiment of the present application also provides a kind of computer readable storage medium, computer executable instructions are stored with, The computer executable instructions, which are performed, realizes the data transmission method for being applied to target BS.

In addition, the embodiment of the present application also provides a kind of computer readable storage medium, computer executable instructions are stored with, The computer executable instructions, which are performed, realizes the data transmission method for being applied to former base station.

In addition, the embodiment of the present application also provides a kind of computer readable storage medium, computer executable instructions are stored with, The computer executable instructions, which are performed, realizes the data transmission method for being applied to UE.

In addition, the embodiment of the present application also provides a kind of computer readable storage medium, computer executable instructions are stored with, The computer executable instructions, which are performed, realizes the data transmission method for being applied to MME.

Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or The various media that can store program code such as CD.

Optionally, in the present embodiment, processor executes above-mentioned implementation according to stored program code in storage medium The method and step of example.

Optionally, the specific example in the present embodiment can refer to described in above-described embodiment and optional embodiment Example, details are not described herein for the present embodiment.

One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program Related hardware (such as processor) is completed, and described program can be stored in computer readable storage medium, as read-only memory, Disk or CD etc..Optionally, all or part of step of above-described embodiment can also be come using one or more integrated circuits It realizes.Correspondingly, the form realization of hardware may be used in each module/unit in above-described embodiment, such as passes through integrated circuit It realizes its corresponding function, can also be realized in the form of software function module, such as be stored in and deposited by processor execution Program/instruction in reservoir realizes its corresponding function.The application is not limited to the knot of the hardware and software of any particular form It closes.

The advantages of basic principles and main features and the application of the application have been shown and described above.The application is not by upper The limitation for stating embodiment, the above embodiments and description only describe the principles of the application, are not departing from the application Under the premise of spirit and scope, the application will also have various changes and improvements, these changes and improvements both fall within claimed Within the scope of the application.

Claims

1. a kind of data transmission method, which is characterized in that including：

Confirmation message is sent to the first base station.

2. data transmission method according to claim 1, which is characterized in that further include：

3. data transmission method according to claim 1, which is characterized in that further include：

The data that the user equipment is sent under default state are received, and the data are sent to core net；The default state It refer to the state that the interface disconnection between user equipment and base station and the interface between base station and core net keep connection.

4. data transmission method according to claim 1, which is characterized in that further include：

5. data transmission method according to claim 1, which is characterized in that the contextual information of the user equipment is at least Including following one：The mark of user equipment, capability information of user facility, user apparatus service information, user equipment select Public land mobile network identity and Tracking Area Code, the reference signal configuration information of user equipment, the industry of user equipment Business configuration information.

6. data transmission method according to claim 1, which is characterized in that further include：

According to the contextual information of the user equipment, the mobile management entity application foundation selected to the user equipment is directed to The connection of the user apparatus service.

7. data transmission method according to claim 6, which is characterized in that the context according to the user equipment Information establishes the connection for the user apparatus service to mobile management entity application, including：

According to the contextual information of the user equipment, the mobile management entity selected before to the user equipment sends request Message, the request message, which carries, is used to indicate the second identifier information for establishing the connection；

The confirmation message of the mobile management entity feedback is received, the confirmation message, which at least carries, is directed to the user equipment industry Gateway side GPRS Tunnel Protocol, tunneling termination identifier and the transport Layer address of business.

8. data transmission method according to claim 7, which is characterized in that the request message is switching request or path Convert requests or the message newly defined.

9. data transmission method according to claim 6, the mobile management entity application selected to the user equipment is built After the vertical connection for the user apparatus service, further include：

The upstream data of the user equipment is sent using the connection to core net, or described in being sent to from core net reception The downlink data of user equipment.

10. data transmission method according to claim 6, which is characterized in that further include following one：

All connections of the user equipment are discharged to the mobile management entity application and establish the user equipment in this base station Connection；

11. data transmission method according to claim 10, which is characterized in that described to the mobile management entity application All connections of the user equipment in this base station are discharged, including：

Request message is sent to the mobile management entity, the request message, which at least carries, is used to indicate the release user Third identification information of the equipment in all connections in this base station.

12. data transmission method according to claim 10, which is characterized in that described to the mobile management entity application It discharges all connections of the user equipment and establishes connection of the user equipment in this base station, including：

Request message is sent to the mobile management entity, the request message at least carries the 4th identification information, and described the Four identification informations are used to indicate all connections established for the user equipment before the mobile management entity is deleted, and again Establish connection of the user equipment in this base station.

13. data transmission method according to claim 10, which is characterized in that described to the mobile management entity application All connections of the user equipment other than this base station are discharged, including：

Request message is sent to the mobile management entity, the request message at least carries the 5th identification information, and described the Five identification informations are used to indicate the mobile management entity and delete all connections of the user equipment other than this base station.

14. a kind of data transmission device, which is characterized in that including：

First receiving module, for receiving the first message from first base station, the first message carries the upper of user equipment Context information；

15. data transmission device according to claim 14, which is characterized in that further include：

First transmission module, the data sent under default state for receiving the user equipment, and the data are sent to Core net；The default state refers to that the interface between user equipment and base station disconnects and the interface between base station and core net is kept The state of connection.

16. data transmission device according to claim 14, which is characterized in that further include：

First establishes link block, for the contextual information according to the user equipment, to the shifting of user equipment selection The connection for the user apparatus service is established in dynamic management entity application.

17. data transmission device according to claim 16, which is characterized in that

Described first establishes link block, is additionally operable to execute one of following：

18. a kind of equipment of work in wireless communications, including：Processor and memory,

The processor is used for：

The first message of the user equipment from first base station is received, the first message carries the context letter of user equipment Breath；

Confirmation message is sent to first base station, the confirmation message carries user equipment and joins in the configuration of this base station transmission data Number,

The data that the user equipment is sent under default state are received, and the data are sent to core net；The default state It refer to the state that the interface disconnection between user equipment and base station and the interface between base station and core net keep connection；

The memory is coupled with the processor.

19. a kind of computer program product including computer-readable medium comprising：

Code is received, is used to receive the first message of the user equipment from first base station, the first message carries user The contextual information of equipment；

Code is sent, is used to send confirmation message.

20. a kind of data transmission method, which is characterized in that including：

21. data transmission method according to claim 20, which is characterized in that further include：

Receive the measurement report of the user equipment to report；

22. data transmission method according to claim 20, which is characterized in that further include：

The confirmation message from second base station is received, the confirmation message carries the user equipment in second base station The configuration parameter of transmission data.

23. data transmission method according to claim 20, which is characterized in that further include：

The second base station information is sent to the user equipment, second base station information includes that the user equipment is passed in default state The mark of the available one or more of target BS of transmission of data and the configuration parameter of the transmission data.

24. a kind of data transmission method, which is characterized in that including：

Receive any one target BS transmission user equipment enter the instruction information of connected state after, discharge the user and set Standby context and the customer equipment context message for notifying the release of other target BS described；Alternatively,

After receiving the instruction of the release customer equipment context information of any one target BS transmission, described in release The context of user equipment and the customer equipment context message for notifying the release of other target BS described.

25. a kind of wireless communication apparatus, which is characterized in that including：

Determining module, for determining the user equipment in the second base station of one or more of the possible transmission data of default state；

Second sending module, the contextual information for sending the user equipment to one or more of second base stations.

26. a kind of equipment of work in wireless communications, including：

Processor is used for：

The contextual information of the user equipment is sent to one or more of second base stations；

Memory is coupled with the processor.

27. a kind of computer program product including computer-readable medium comprising：

It determines code, is used to determine the user equipment in the second base station of one or more of the possible transmission data of default state；

28. a kind of data transmission method, which is characterized in that including：

User equipment receives the X message for second base station of one or more that first base station is sent, described in X message carrying The mark of second base station and the configuration parameter of transmission data；

Wherein, the default state refers to that interface between the user equipment and the base station disconnects and the former base station and core Interface between net keeps the state of connection.

29. data transmission method according to claim 28, which is characterized in that further include that the user equipment is from described Target BS receives downlink data.

30. a kind of data transmission device, which is characterized in that including：

Configuration module, the X message of the second base station of one or more for receiving first base station transmission, the X message are taken The configuration parameter of mark and transmission data with second base station；

Second transmission module, for the data sent will be needed to be sent to one or more of target BS in default state；

31. a kind of user equipment, including：Processor is used for：

The default state refer to interface between the user equipment and the base station disconnect and the former base station and core net it Between interface keep connection state,

Memory is coupled with the processor.

32. a kind of computer program product including computer-readable medium comprising：

Code is received, is used to receive the mark of one or more target BS of base station transmission and the configuration ginseng of transmission data Number；