CN104640165A

CN104640165A - Data transmission method, equipment and system

Info

Publication number: CN104640165A
Application number: CN201310552336.4A
Authority: CN
Inventors: 陆扬; 杨宁
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2013-11-07
Filing date: 2013-11-07
Publication date: 2015-05-20
Anticipated expiration: 2033-11-07
Also published as: CN104640165B

Abstract

The invention discloses a data transmission method, equipment and system. The method comprises the following steps that: when UE (User Equipment) needs to switch from a source SeNB (Secondary evolved Node B) to a target SeNB, a MeNB (Macro evolved Node B) receives a data reception status indicator from the UE, wherein the data reception status indicator carries indication information of data currently received by the UE; after the data reception status indicator is received, the MeNB determines data which is not successfully received by the UE currently, wherein the data which is not successfully received by the UE is data which needs to be transmitted from the source SeNB to the UE and is not transmitted to the UE yet; and the MeNB transmits the data which is not successfully received by the UE to the UE. In the embodiment of the invention, the UE can receive all data needing to be received in time; non-interrupt continuous decoding is realized; and reception interruption of the UE is avoided. On the aspect of a network side, the problem of reception interruption of the UE passing through two SeNB adjacent regions is solved.

Description

A kind of data transmission method, equipment and system

Technical field

The present invention relates to communication technical field, particularly relate to a kind of data transmission method, equipment and system.

Background technology

70% of 60% and data service of the mobile voice service of current mobile operator occurs in indoor, and the solution for indoor business development mainly comprises LTE(Long Term Evolution, Long Term Evolution) Small Cell(small-cell).In LTE Small Cell scheme, the Pico base station defined in standard and Home eNodeB are referred to as SeNB(Secondary eNB by industry, assistant base station or slave base stations), because interference management, node self-starting and share core net and network management system with Cellular Networks are supported in the deployment of SeNB, it is disposed and management relative ease, become the direction solving following indoor and hot spot data service coverage.

In the network environment deploying SeNB, in order to effectively utilize MeNB(macro base station) resource, improve user throughput, currently propose a kind of carrier aggregation scheme, as shown in Figure 1, be the transfer of data schematic diagram under carrier aggregation scheme, be UE(User Equipment by MeNB and SeNB simultaneously, subscriber equipment) transmit data, to promote the downlink peak rates of user.Under the above-mentioned network architecture, in order to make UE reach downlink peak rates, packets need is parallel distributes to MeNB and SeNB, and like this, UE can realize sequence reception when receiving data, realizes continuous print decoding, thus reaches the fastest receiving velocity.Such as, the PDCP(Packet Data Converge Protocol that MeNB sends to UE, PDCP) SDU(Service Data Unit, service data unit) sequence number is respectively 1,3,5,7 ..., the PDCP SDU sequence number that SeNB sends to UE is respectively 2,4,6,8, ..., the PDCPSDU sequence number that therefore UE receives is continuous print, and the PDCP SDU sequence number that namely can receive is respectively 1,2,3,4,5,6,7,8 ..., thus continuous print decoding can be realized, and then reach the fastest receiving velocity.

But, as shown in Figure 2, when UE switches from SeNB1 to SeNB2, suppose when UE and SeNB1 disconnects, PDCP SDU SN(Series Number, sequence number)=4 successfully to be received by UE, and the connection of UE and SeNB2 is not now also set up, then: the PDCP SDU SN that UE receives will be respectively 1, 2, 3, 4, 5, 7, ..., like this, because UE does not receive PDCP SDU SN=6, therefore the sequence number of PDCP SDU is discontinuous, even if PDCP SDU SN=7 can successfully receive, UE still cannot realize the continuous decoding without interrupting, therefore the receive interruption of UE can be caused.Further, from network side angle, can there is the problem of above-mentioned receive interruption in nearly all UE passing through two SeNB adjacent areas.

Summary of the invention

The embodiment of the present invention provides a kind of data transmission method, equipment and system, to avoid UE receive interruption.

In order to achieve the above object, the embodiment of the present invention provides a kind of data transmission method, said method comprising the steps of:

When user equipment (UE) needs to switch to target SeNB from source assistant base station SeNB, the data receiving state that macro base station MeNB receives from described UE indicates, and carries the indication information of the data of the current reception of described UE in the instruction of described data receiving state;

Described MeNB, after receiving the instruction of described data receiving state, determines the data of the current unsuccessful reception of described UE; Wherein, the data of the current unsuccessful reception of described UE send to described UE for needing by described source SeNB, but not yet send to the data of described UE;

The data of current for described UE unsuccessful reception are sent to described UE by described MeNB.

The embodiment of the present invention provides a kind of data transmission method, said method comprising the steps of:

Source assistant base station SeNB is when knowing that user equipment (UE) needs to switch to target SeNB from described source SeNB, and described source SeNB sends handover request message to described target SeNB, by described target SeNB after receiving described handover request message, generates switching command;

Described source SeNB receives the described switching command from described target SeNB, and described switching command is sent to described UE, by described UE after receiving described switching command, data receiving state instruction is sent to macro base station MeNB, and in described data receiving state instruction, carry the indication information of the data of the current reception of described UE, and by described MeNB after receiving described data receiving state and indicating, determine the data of the current unsuccessful reception of described UE, and the data of current for described UE unsuccessful reception are sent to described UE; Wherein, the data of the current unsuccessful reception of described UE send to described UE for needing by described source SeNB, but not yet send to the data of described UE.

When source assistant base station SeNB knows that user equipment (UE) needs to switch to target SeNB from source SeNB, described target SeNB receives the handover request message from described source SeNB, and after receiving described handover request message, generates switching command;

Described switching command is sent to described UE by described source SeNB by described target SeNB, by described UE after receiving described switching command, data receiving state instruction is sent to macro base station MeNB, and in described data receiving state instruction, carry the indication information of the data of the current reception of UE, and by described MeNB after receiving data receiving state instruction, determine the data of the current unsuccessful reception of UE, and the data of current for described UE unsuccessful reception are sent to described UE; Wherein, the data of the current unsuccessful reception of described UE send to described UE for needing by source SeNB, but not yet send to the data of described UE.

The embodiment of the present invention provides a kind of macro base station MeNB, and described MeNB specifically comprises:

Receiver module, during for needing to switch to target SeNB from source assistant base station SeNB when user equipment (UE), the data receiving state received from described UE indicates, and carries the indication information of the data of the current reception of described UE in the instruction of described data receiving state;

Determination module, for after receiving the instruction of described data receiving state, determines the data of the current unsuccessful reception of described UE; Wherein, the data of the current unsuccessful reception of described UE are specially to be needed to send to described UE by described source SeNB, but not yet sends to the data of described UE;

Sending module, for sending to described UE by the data of current for described UE unsuccessful reception.

The embodiment of the present invention provides a provenance assistant base station SeNB, and described source SeNB specifically comprises:

First sending module, for when knowing that user equipment (UE) needs to switch to target SeNB from described source SeNB, sends handover request message to described target SeNB, by described target SeNB after receiving described handover request message, generates switching command;

Second sending module, for receiving the described switching command from described target SeNB, and described switching command is sent to described UE, by described UE after receiving described switching command, data receiving state instruction is sent to macro base station MeNB, and in described data receiving state instruction, carry the indication information of the data of the current reception of described UE, and by described MeNB after receiving described data receiving state and indicating, determine the data of the current unsuccessful reception of described UE, and the data of current for described UE unsuccessful reception are sent to described UE; Wherein, the data of the current unsuccessful reception of described UE send to described UE for needing by described source SeNB, but not yet send to the data of described UE.

The embodiment of the present invention provides a kind of target assistant base station SeNB, and described target SeNB specifically comprises:

Receiver module, during for knowing that at source SeNB user equipment (UE) needs to switch to target SeNB from source SeNB, receives the handover request message from described source SeNB, and after receiving described handover request message, generates switching command;

Sending module, for described switching command being sent to described UE by described source SeNB, by described UE after receiving described switching command, data receiving state instruction is sent to macro base station MeNB, and in described data receiving state instruction, carry the indication information of the data of the current reception of UE, and by described MeNB after receiving data receiving state instruction, determine the data of the current unsuccessful reception of UE, and the data of current for described UE unsuccessful reception are sent to described UE; Wherein, the data of the current unsuccessful reception of described UE send to described UE for needing by source SeNB, but not yet send to the data of described UE.

The embodiment of the present invention provides a kind of data transmission system, and described data transmission system specifically comprises:

User equipment (UE), during for needing to switch to target SeNB from source assistant base station SeNB as described UE, sends data receiving state instruction to macro base station MeNB, and carries the indication information of the data of the current reception of described UE in the instruction of described data receiving state;

MeNB, indicates for the data receiving state received from described UE, and after receiving the instruction of described data receiving state, determines the data of the current unsuccessful reception of described UE; Wherein, the data of the current unsuccessful reception of described UE send to described UE for needing by described source SeNB, but not yet send to the data of described UE; Afterwards the data of current for described UE unsuccessful reception are sent to described UE.

Source assistant base station SeNB is knowing that needing to delete described source SeNB is the auxiliary community SCell that user equipment (UE) configures, and after by the cell configuration of target SeNB being the SCell of described UE, send to the data of described UE to send to described UE by described source SeNB all needs;

Described source SeNB is after sending to the transfer of data of described UE to complete by described source SeNB all needs, deleting described source SeNB is the SCell that described UE configures, and will delete the message notice of SCell to macro base station MeNB/ equipment of the core network, by described MeNB/ equipment of the core network after receiving the information of deleting SCell, be the SCell of described UE by the cell configuration of described target SeNB.

Macro base station MeNB/ equipment of the core network receives the information of deleting auxiliary community SCell from source assistant base station SeNB; Wherein, the information of having deleted SCell is that source SeNB is knowing that needing to delete described source SeNB is the SCell that user equipment (UE) configures, and after by the cell configuration of target SeNB being the SCell of described UE, after sending to the transfer of data of described UE to complete by described source SeNB all needs, delete after described source SeNB is the SCell of described UE configuration and notify;

The cell configuration of described target SeNB, after receiving the information of deleting SCell, is the SCell of described UE by described MeNB/ equipment of the core network.

Sending module, for knowing that needing to delete described source SeNB is the auxiliary community SCell that user equipment (UE) configures, and after by the cell configuration of target SeNB being the SCell of described UE, send to the data of described UE to send to described UE by described source SeNB all needs;

Removing module, for being sent to by all needs after the transfer of data of described UE completes by described source SeNB, deleting described source SeNB is the SCell that described UE configures;

Notification module, for after deleting the SCell for described UE configuration, to delete the message notice of SCell to macro base station MeNB/ equipment of the core network, by described MeNB/ equipment of the core network after receiving the information of deleting SCell, be the SCell of described UE by the cell configuration of described target SeNB.

The embodiment of the present invention provides a kind of macro base station MeNB/ equipment of the core network, and described MeNB/ equipment of the core network specifically comprises:

Receiver module, for receiving the information of deleting auxiliary community SCell from source assistant base station SeNB; Wherein, the information of having deleted SCell is that source SeNB is knowing that needing to delete described source SeNB is the SCell that user equipment (UE) configures, and after by the cell configuration of target SeNB being the SCell of described UE, after sending to the transfer of data of described UE to complete by described source SeNB all needs, delete after described source SeNB is the SCell of described UE configuration and notify;

The cell configuration of described target SeNB, for after receiving the information of deleting SCell, is the SCell of described UE by processing module.

Source assistant base station SeNB, for know need deletion source SeNB be user equipment (UE) configuration auxiliary community SCell, and be after the SCell of described UE by the cell configuration of target SeNB, send to the data of described UE to send to described UE by described source SeNB all needs; After sending to the transfer of data of described UE to complete by described source SeNB all needs, deleting described source SeNB is the SCell that described UE configures, and will delete the message notice of SCell to macro base station MeNB/ equipment of the core network;

MeNB/ equipment of the core network, for receive from described source SeNB delete the information of SCell after, be the SCell of described UE by the cell configuration of described target SeNB.

Macro base station MeNB know need deletion source assistant base station SeNB be user equipment (UE) configuration auxiliary community SCell, and after by the cell configuration of target SeNB being the SCell of described UE, deleting described source SeNB is the auxiliary community SCell that described UE configures, and is the SCell of described UE by the cell configuration of described target SeNB; And described MeNB stops needing for described source SeNB distributes the data sending to described UE, estimates and needs to send to described UE by described source SeNB, but not yet send to the data of described UE, and the data estimated are sent to described UE.

Processing module, for know need deletion source assistant base station SeNB be user equipment (UE) configuration auxiliary community SCell, and be after the SCell of described UE by the cell configuration of target SeNB, deleting described source SeNB is the auxiliary community SCell that described UE configures, by the SCell that the cell configuration of described target SeNB is described UE, and stop needing for described source SeNB distributes the data sending to described UE;

Sending module, needs to send to described UE by described source SeNB for estimating, but not yet sends to the data of described UE, and the data estimated are sent to described UE.

Compared with prior art, the embodiment of the present invention at least has the following advantages: in the embodiment of the present invention, in the network environment deploying SeNB, when needs transmit data for UE by MeNB and SeNB simultaneously, if UE switches to target SeNB from source SeNB, then needs can be realized to send to the data of UE to send to UE by source SeNB, thus make UE can receive all data of self needs reception in time, then realize without the continuous decoding interrupted, avoid the receive interruption causing UE.From the angle of network side, make the problem that receive interruption can not be occurred by the UE of two SeNB adjacent areas.

Accompanying drawing explanation

In order to be illustrated more clearly in technical scheme of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 and Fig. 2 is the transfer of data schematic diagram in prior art under carrier aggregation scheme;

Fig. 3 and Fig. 4 is the two kinds of network architecture schematic diagrames provided in the embodiment of the present invention;

Fig. 5 is a kind of data transmission method schematic flow sheet that the embodiment of the present invention one provides;

Fig. 6 and Fig. 7 is two kinds of transfer of data schematic diagrames in the embodiment of the present invention one;

Fig. 8 is a kind of data transmission method schematic flow sheet that the embodiment of the present invention two provides;

Fig. 9 is the transfer of data schematic diagram in the embodiment of the present invention two;

Figure 10 is a kind of data transmission method schematic flow sheet that the embodiment of the present invention three provides;

Figure 11 is the transfer of data schematic diagram in the embodiment of the present invention three

Figure 12 is the structural representation of a kind of MeNB that the embodiment of the present invention four provides;

Figure 13 is the structural representation of the provenance SeNB that the embodiment of the present invention five provides;

Figure 14 is the structural representation of a kind of target SeNB that the embodiment of the present invention six provides;

Figure 15 is the structural representation of the provenance SeNB that the embodiment of the present invention eight provides;

Figure 16 is the structural representation of a kind of MeNB/ equipment of the core network that the embodiment of the present invention nine provides;

Figure 17 is the structural representation of a kind of MeNB that the embodiment of the present invention 11 provides.

Embodiment

Below in conjunction with the accompanying drawing in the present invention, be clearly and completely described the technical scheme in the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

For problems of the prior art, the embodiment of the present invention provides a kind of data transmission method, in the network environment deploying SeNB, when needs transmit data for UE by MeNB and SeNB simultaneously, if UE switches from source SeNB to target SeNB, then by the member carrier management method improved and the changing method of improvement, solve UE at two SeNB(source SeNB and target SeNB) between carry out occurring when user plane switches the problem of receive interruption.Concrete, by the member carrier management method of improvement and the changing method of improvement, make UE can receive all data of self needs reception in time, then realize without the continuous decoding of interruption, avoid the receive interruption causing UE.From the angle of network side, make the problem that receive interruption can not be occurred by the UE of two SeNB adjacent areas.

As shown in Figure 3 and Figure 4, in order to realize by MeNB and SeNB simultaneously for UE transmits data, the embodiment of the present invention can be realized by framework 1 or framework 2.In the framework 1 shown in Fig. 3, UE is in order to carry out transfer of data with equipment of the core network, UE directly can carry out transfer of data by MeNB and equipment of the core network (as network elements such as Mobility Management Entity MME), or UE can carry out transfer of data by SeNB, MeNB and equipment of the core network successively.In the framework 2 shown in Fig. 4, UE is in order to carry out transfer of data with equipment of the core network, and UE directly can carry out transfer of data by MeNB and equipment of the core network, or UE directly can carry out transfer of data by SeNB and equipment of the core network.

Realize framework based on above-mentioned two kinds, propose following embodiment in the present invention and realize data transmission procedure.

Embodiment one

For the framework 2 shown in the framework 1 shown in Fig. 3 and Fig. 4, provide a kind of data transmission method in the embodiment of the present invention one, as shown in Figure 5, the method at least can comprise the following steps:

Step 501, when UE needs to switch to target SeNB from source SeNB, the data receiving state that MeNB receives from UE indicates (it can be the instruction of PDCP SDU SN state), and carries the indication information of the data of the current reception of UE in the instruction of this data receiving state.

Wherein, the indication information of the data of the current reception of UE can be specially: the indication information of the data that the current success of UE receives, or, the indication information of the data of the current unsuccessful reception of UE.

Step 502, after MeNB indicates from the data receiving state of UE receiving (i.e. PDCP SDU SN state instruction), determines the data of the current unsuccessful reception of this UE.Wherein, the data of the current unsuccessful reception of UE are specially to be needed to send to UE by source SeNB, but not yet sends to the data of UE.

Before in the embodiment of the present invention, MeNB indicates from the data receiving state of UE receiving (i.e. PDCP SDU SN state instruction), namely MeNB can obtain the data of the current unsuccessful reception of this UE.Further, after MeNB indicates from the data receiving state of UE receiving (i.e. PDCP SDU SN state instruction), the data self obtained can be utilized to determine the data of the current unsuccessful reception of this UE.

Step 503, the data of current for UE unsuccessful reception are sent to UE by MeNB.

Below in conjunction with two kinds of concrete implementations, said process is further detailed.

Mode one, for the framework 2 shown in the framework 1 shown in Fig. 3 and Fig. 4, corresponding data transmission procedure as shown in Figure 6.

In mode once, MeNB determines the process of the data of the current unsuccessful reception of UE, comprise following process further: source SeNB(is as SeNB1) knowing that UE needs switch to target SeNB(as SeNB2 from source SeNB) time, not yet send to the data retransmission of UE to MeNB by the SeNB buffer memory of source; MeNB utilizes the data from source SeNB received to determine the data of the current unsuccessful reception of UE.

In the embodiment of the present invention, source SeNB know UE need switch to target SeNB from source SeNB time (as SeNB1 receives the measurement reported result of UE, judgement meets switching condition), handover request message is sent to target SeNB, target SeNB generates switching command after receiving handover request message, and by source SeNB, switching command is passed through UE.UE, after receiving switching command, sends data receiving state instruction (i.e. PDCP SDU SN state instruction) to MeNB; MeNB, after receiving the PDCP SDU SN state instruction from UE, determines the data of the current unsuccessful reception of this UE, and the data of current for UE unsuccessful reception is sent to UE, and namely MeNB is designated as UE transmission data sequentially according to this.Concrete, after MeNB receives the PDCP SDU SN state instruction of UE, be designated as according to this PDCP SDU that UE sends unsuccessful reception, and change the method for salary distribution of data on MeNB order-assigned.

In the embodiment of the present invention, target SeNB is after generation switching command, and also send to MeNB/ equipment of the core network the instruction that target SeNB has received UE, this instruction is target SeNB distribute data for asking MeNB/ equipment of the core network; Be that target SeNB and MeNB walks abreast to distribute and needs to send to the data of UE by MeNB/ equipment of the core network.Wherein, being MeNB for framework 1, the MeNB/ equipment of the core network shown in Fig. 3, is equipment of the core network for framework 2, the MeNB/ equipment of the core network shown in Fig. 4.

In the embodiment of the present invention, MeNB/ equipment of the core network is that target SeNB and MeNB walks abreast to distribute and needs the data sending to UE specifically to comprise: MeNB/ equipment of the core network is after receiving target SeNB and having received the instruction of UE, determine that new distribute data arrives the time point of target SeNB according to the delay character of backhaul, and be that target SeNB and MeNB walks abreast the data of distributing and needing to send to UE according to time point.

Mode two, for the framework 1 shown in Fig. 3, corresponding data transmission procedure as shown in Figure 7.

Mode two times, MeNB determines the process of the data of the current unsuccessful reception of UE, comprise following process further: MeNB, before receiving the data receiving state instruction from UE, stores all needs by source SeNB(as SeNB1 in own cache) send to the data of UE; After receiving the data receiving state instruction from UE, determine that all needs send in the data of UE by source SeNB, other data except the data that the current success of UE receives are the data of the current unsuccessful reception of UE.

Concrete, which two times, MeNB is not receiving before UE successfully received certain PDCP SDU, and storing in the buffer is all the time the data of SeNB distribution.After MeNB receives the PDCP SDU SN state instruction of UE, be designated as according to this PDCP SDU that UE sends unsuccessful reception, and change the method for salary distribution of data on MeNB order-assigned.Further, after MeNB receives the PDCP SDU SN state instruction of UE, MeNB deletes the data of cache storage according to SN state.

In the embodiment of the present invention, target SeNB is after generation switching command, and also send to MeNB the instruction that target SeNB has received UE, this instruction is target SeNB distribute data for asking MeNB; Be that target SeNB and MeNB walks abreast to distribute and needs to send to the data of UE by MeNB.

In the embodiment of the present invention, MeNB is that target SeNB and MeNB walks abreast to distribute and needs the data sending to UE specifically to comprise: MeNB is after receiving target SeNB and having received the instruction of UE, determine that new distribute data arrives the time point of target SeNB according to the delay character of backhaul, and be that target SeNB and MeNB walks abreast the data of distributing and needing to send to UE according to time point.

Embodiment two

For the framework 2 shown in the framework 1 shown in Fig. 3 and Fig. 4, provide a kind of data transmission method in the embodiment of the present invention two, as shown in Figure 8, the method at least can comprise the following steps:

Step 801, source SeNB know need deletion source SeNB be UE configuration SCell(Secondary Cell, auxiliary community), and after by the cell configuration of target SeNB being the SCell of UE (namely the SCell of UE changes), send to the data of UE to send to UE by source SeNB all needs.

Step 802, source SeNB is after sending to the transfer of data of UE to complete by source SeNB all needs, deletion source SeNB is the SCell of UE configuration, and will delete the message notice of SCell to MeNB/ equipment of the core network, by MeNB/ equipment of the core network after receiving the information of deleting SCell, be the SCell of UE by the cell configuration of target SeNB.Wherein, being MeNB for framework 1, the MeNB/ equipment of the core network shown in Fig. 3, is equipment of the core network for framework 2, the MeNB/ equipment of the core network shown in Fig. 4.

For the framework 2 shown in the framework 1 shown in Fig. 3 and Fig. 4, data transmission procedure as shown in Figure 9.

In the embodiment of the present invention, source SeNB know need deletion source SeNB be UE configuration SCell, and after by the cell configuration of target SeNB being the SCell of UE, (namely source SeNB receives the measurement reported result of UE, and judgement needs to delete SCell), source SeNB will need the message notice of deleting SCell to MeNB/ equipment of the core network; MeNB/ equipment of the core network, after receiving the information needing to delete SCell, stops as source SeNB distributes the data needing to send to UE, and data allocations mode is subsequently changed to order-assigned on MeNB.Further, after source SeNB has passed the data of all own cache, by RRC(Radio Resource Control, wireless heterogeneous networks) SCell of UE deletes by signaling, source SeNB will delete the message notice of SCell to MeNB/ equipment of the core network simultaneously, by MeNB/ equipment of the core network after receiving the information of deleting SCell, be that to configure new SCell(and MeNB/ equipment of the core network by the cell configuration of target SeNB be the SCell of UE to this UE by RRC signaling), and start to need to send to the data of UE for target SeNB and MeNB walks abreast to distribute simultaneously.

In the embodiment of the present invention, MeNB/ equipment of the core network is that target SeNB and MeNB walks abreast to distribute and needs to send to the process of the data of UE, specifically comprise: according to the delay character of backhaul, MeNB/ equipment of the core network determines that new distribute data arrives the time point of target SeNB, and be that target SeNB and MeNB walks abreast the data of distributing and needing to send to UE according to this time point.

Embodiment three

For the framework 1 shown in Fig. 3, provide a kind of data transmission method in the embodiment of the present invention three, as shown in Figure 10, the method at least can comprise the following steps:

Step 1001, MeNB know need deletion source SeNB be UE configuration auxiliary community SCell, and after by the cell configuration of target SeNB being the SCell of UE, deleting the auxiliary community SCell that source SeNB is UE configuration, and be the SCell of UE by the cell configuration of target SeNB.

Step 1002, MeNB stops needing for source SeNB distributes the data sending to UE, estimates and needs to send to UE by source SeNB, but not yet send to the data of UE, and the data estimated (namely need to send to UE by source SeNB, but not yet send to the data of UE) are sent to UE.

For the framework 1 shown in Fig. 3, corresponding data transmission procedure as shown in figure 11.

In the embodiment of the present invention, when source SeNB receives the measurement reported result of UE, judgement can delete SCell, and MeNB also receives the measurement reported result of UE, judgement can for UE add new SCell time, MeNB deletes the old SCell of this UE by RRC signaling, configures new SCell, and starts as target SeNB distribute data simultaneously.Wherein, when MeNB sends the RRC signaling of deleting/adding SCell to UE, MeNB stops the data allocations to SeNB1.In addition, when MeNB is target SeNB distribute data, MeNB is that target SeNB and MeNB walks abreast to distribute and needs to send to the data of UE, and according to the delay character of backhaul, MeNB determines that new distribute data arrives the time point of target SeNB, and be that target SeNB and MeNB walks abreast the data of distributing and needing to send to UE according to this time point.

Embodiment four

Based on the inventive concept same with said method, additionally provide a kind of macro base station MeNB in the embodiment of the present invention, as shown in figure 12, described MeNB specifically comprises:

Receiver module 11, during for needing to switch to target SeNB from source assistant base station SeNB when user equipment (UE), the data receiving state received from described UE indicates, and carries the indication information of the data of the current reception of described UE in the instruction of described data receiving state;

Determination module 12, for after receiving the instruction of described data receiving state, determines the data of the current unsuccessful reception of described UE; Wherein, the data of the current unsuccessful reception of described UE are specially to be needed to send to described UE by described source SeNB, but not yet sends to the data of described UE;

Sending module 13, for sending to described UE by the data of current for described UE unsuccessful reception.

Described determination module 12, during specifically for knowing that at source SeNB described UE needs to switch to target SeNB from source SeNB, receive from the data not yet sending to described UE in the described source SeNB buffer memory of described source SeNB, and utilize the data from described source SeNB received to determine the data of the current unsuccessful reception of described UE; Or, before receiving the data receiving state instruction from UE, store all needs are sent to described UE data by source SeNB in the buffer; After receiving the data receiving state instruction from UE, determine that all needs send in the data of described UE by source SeNB, other data except the data that the current success of described UE receives are the data of the current unsuccessful reception of described UE.

Described receiver module 11, also for receiving the instruction of receiving described UE from described target SeNB, described instruction is described target SeNB distribute data for asking described MeNB;

Described sending module 13, also for the data of distributing and needing to send to described UE that walk abreast for described target SeNB and described MeNB.

Described sending module 13, be further used for after receiving described instruction, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

Wherein, the modules of apparatus of the present invention can be integrated in one, and also can be separated deployment.Above-mentioned module can merge into a module, also can split into multiple submodule further.

Embodiment five

Based on the inventive concept same with said method, additionally provide a provenance assistant base station SeNB in the embodiment of the present invention, as shown in figure 13, described source SeNB specifically comprises:

First sending module 21, for when knowing that user equipment (UE) needs to switch to target SeNB from described source SeNB, sends handover request message to described target SeNB, by described target SeNB after receiving described handover request message, generates switching command;

Second sending module 22, for receiving the described switching command from described target SeNB, and described switching command is sent to described UE, by described UE after receiving described switching command, data receiving state instruction is sent to macro base station MeNB, and in described data receiving state instruction, carry the indication information of the data of the current reception of described UE, and by described MeNB after receiving described data receiving state and indicating, determine the data of the current unsuccessful reception of described UE, and the data of current for described UE unsuccessful reception are sent to described UE; Wherein, the data of the current unsuccessful reception of described UE send to described UE for needing by described source SeNB, but not yet send to the data of described UE.

Described source SeNB also comprises:

3rd sending module 23, for when knowing that described UE needs to switch to target SeNB from source SeNB, to in the SeNB buffer memory of described source, not yet send to the data retransmission of described UE to described MeNB, received from the data not yet sending to UE in the source SeNB buffer memory of described source SeNB by described MeNB, and utilize the data from described source SeNB received to determine the data of the current unsuccessful reception of described UE.

Embodiment six

Based on the inventive concept same with said method, additionally provide a kind of target assistant base station SeNB in the embodiment of the present invention, as shown in figure 14, described target SeNB specifically comprises:

Receiver module 31, during for knowing that at source SeNB user equipment (UE) needs to switch to target SeNB from source SeNB, receives the handover request message from described source SeNB, and after receiving described handover request message, generates switching command;

Sending module 32, for described switching command being sent to described UE by described source SeNB, by described UE after receiving described switching command, data receiving state instruction is sent to macro base station MeNB, and in described data receiving state instruction, carry the indication information of the data of the current reception of UE, and by described MeNB after receiving data receiving state instruction, determine the data of the current unsuccessful reception of UE, and the data of current for described UE unsuccessful reception are sent to described UE; Wherein, the data of the current unsuccessful reception of described UE send to described UE for needing by source SeNB, but not yet send to the data of described UE.

Described sending module 32, also for after the described switching command of generation, send to MeNB/ equipment of the core network the instruction that described target SeNB has received described UE, described instruction is described target SeNB distribute data for asking described MeNB/ equipment of the core network; By described MeNB/ equipment of the core network after receiving described instruction, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

Embodiment seven

Based on the inventive concept same with said method, additionally provide a kind of data transmission system in the embodiment of the present invention, described data transmission system specifically comprises:

In the embodiment of the present invention, described data transmission system also comprises:

Source SeNB, for when knowing that described UE needs to switch to target SeNB from source SeNB, will not yet send to the data retransmission of described UE to described MeNB in the SeNB buffer memory of described source;

Described MeNB, specifically for receiving from the data not yet sending to described UE in the described source SeNB buffer memory of source SeNB, and utilizes the data from source SeNB received to determine the data of the current unsuccessful reception of described UE; Or, before receiving the data receiving state instruction from UE, store all needs are sent to described UE data by source SeNB in the buffer; After receiving the data receiving state instruction from UE, determine that all needs send in the data of described UE by source SeNB, other data except the data that the current success of described UE receives are the data of the current unsuccessful reception of described UE.

Source SeNB, for when knowing that described UE needs to switch to described target SeNB from described source SeNB, sends handover request message to described target SeNB;

Target SeNB, for generating switching command after receiving handover request message, and sends to described UE by described source SeNB by described switching command, by described UE after receiving described switching command, sends the instruction of described data receiving state to described MeNB; And after the described switching command of generation, send to MeNB/ equipment of the core network the instruction that described target SeNB has received described UE, described instruction is described target SeNB distribute data for asking described MeNB/ equipment of the core network; By described MeNB/ equipment of the core network after receiving described instruction, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

Embodiment eight

Based on the inventive concept same with said method, additionally provide a provenance assistant base station SeNB in the embodiment of the present invention, as shown in figure 15, described source SeNB specifically comprises:

Sending module 41, for knowing that needing to delete described source SeNB is the auxiliary community SCell that user equipment (UE) configures, and after by the cell configuration of target SeNB being the SCell of described UE, send to the data of described UE to send to described UE by described source SeNB all needs;

Removing module 42, for being sent to by all needs after the transfer of data of described UE completes by described source SeNB, deleting described source SeNB is the SCell that described UE configures;

Notification module 43, for after deleting the SCell for described UE configuration, to delete the message notice of SCell to macro base station MeNB/ equipment of the core network, by described MeNB/ equipment of the core network after receiving the information of deleting SCell, be the SCell of described UE by the cell configuration of described target SeNB.

Described notification module 43, also for knowing that needing to delete described source SeNB is the SCell that UE configures, and after by the cell configuration of target SeNB being the SCell of described UE, to the message notice of deleting SCell be needed to described MeNB/ equipment of the core network, by described MeNB/ equipment of the core network after receiving the information needing to delete SCell, stop as described source SeNB distributes the data needing to send to described UE.

Embodiment nine

Based on the inventive concept same with said method, additionally provide a kind of macro base station MeNB/ equipment of the core network in the embodiment of the present invention, as shown in figure 16, described MeNB/ equipment of the core network specifically comprises:

Receiver module 51, for receiving the information of deleting auxiliary community SCell from source assistant base station SeNB; Wherein, the information of having deleted SCell is that source SeNB is knowing that needing to delete described source SeNB is the SCell that user equipment (UE) configures, and after by the cell configuration of target SeNB being the SCell of described UE, after sending to the transfer of data of described UE to complete by described source SeNB all needs, delete after described source SeNB is the SCell of described UE configuration and notify;

The cell configuration of described target SeNB, for after receiving the information of deleting SCell, is the SCell of described UE by processing module 52.

Described receiver module 51, also for receiving the information needing to delete SCell from source SeNB; Wherein, to need to delete the information of SCell be described source SeNB needs to delete the SCell that described source SeNB is UE configuration knowing, and notifies after by the cell configuration of target SeNB being the SCell of described UE;

Described processing module 52, also for after receiving the information needing to delete SCell, stops as described source SeNB distributes the data needing to send to described UE.

Described processing module 52, also for after the SCell by the cell configuration of described target SeNB being described UE, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

Embodiment ten

Described source SeNB, also for knowing that needing to delete described source SeNB is the SCell that described UE configures, and after by the cell configuration of described target SeNB being the SCell of described UE, will need the message notice of deleting SCell to described MeNB/ equipment of the core network;

Described MeNB/ equipment of the core network, also for after receiving the information needing to delete SCell, stop needing for described source SeNB distributes the data sending to described UE, and determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

Embodiment 11

Based on the inventive concept same with said method, additionally provide a kind of macro base station MeNB in the embodiment of the present invention, as shown in figure 17, described MeNB specifically comprises:

Processing module 61, for know need deletion source assistant base station SeNB be user equipment (UE) configuration auxiliary community SCell, and be after the SCell of described UE by the cell configuration of target SeNB, deleting described source SeNB is the auxiliary community SCell that described UE configures, by the SCell that the cell configuration of described target SeNB is described UE, and stop needing for described source SeNB distributes the data sending to described UE;

Sending module 62, needs to send to described UE by described source SeNB for estimating, but not yet sends to the data of described UE, and the data estimated are sent to described UE.

Described processing module 61 also for determining that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and is that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.

The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.

Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims

1. a data transmission method, is characterized in that, said method comprising the steps of:

2. the method for claim 1, is characterized in that, described macro base station MeNB determines the process of the data of the current unsuccessful reception of described UE, comprises further:

Described source SeNB is when knowing that described UE needs to switch to target SeNB from source SeNB, described MeNB receives from the data not yet sending to UE in the source SeNB buffer memory of described source SeNB, and utilizes the data from described source SeNB received to determine the data of the current unsuccessful reception of described UE; Or,

Described MeNB, before receiving the data receiving state instruction from UE, stores all needs are sent to described UE data by source SeNB in the buffer; After receiving the data receiving state instruction from UE, determine that all needs send in the data of described UE by source SeNB, other data except the data that the current success of described UE receives are the data of the current unsuccessful reception of described UE.

3. the method for claim 1, is characterized in that, described method also comprises:

Described MeNB receives the instruction of receiving described UE from described target SeNB, and described instruction is described target SeNB distribute data for asking described MeNB; Described MeNB is that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE.

4. method as claimed in claim 3, is characterized in that, described MeNB is that described target SeNB and described MeNB walk abreast the data of distributing and needing to send to described UE, specifically comprises:

Described MeNB is after receiving described instruction, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

5. a data transmission method, is characterized in that, said method comprising the steps of:

6. method as claimed in claim 5, it is characterized in that, described method also comprises:

Described source SeNB is when knowing that described UE needs to switch to target SeNB from source SeNB, to in the SeNB buffer memory of described source, not yet send to the data retransmission of described UE to described MeNB, received from the data not yet sending to UE in the source SeNB buffer memory of described source SeNB by described MeNB, and utilize the data from described source SeNB received to determine the data of the current unsuccessful reception of described UE.

7. a data transmission method, is characterized in that, said method comprising the steps of:

8. method as claimed in claim 7, it is characterized in that, described method also comprises:

Described target SeNB is after the described switching command of generation, and send to MeNB/ equipment of the core network the instruction that described target SeNB has received described UE, described instruction is described target SeNB distribute data for asking described MeNB/ equipment of the core network; By described MeNB/ equipment of the core network after receiving described instruction, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

9. a macro base station MeNB, is characterized in that, described MeNB specifically comprises:

10. MeNB as claimed in claim 9, is characterized in that,

Described determination module, during specifically for knowing that at source SeNB described UE needs to switch to target SeNB from source SeNB, receive from the data not yet sending to described UE in the described source SeNB buffer memory of described source SeNB, and utilize the data from described source SeNB received to determine the data of the current unsuccessful reception of described UE; Or, before receiving the data receiving state instruction from UE, store all needs are sent to described UE data by source SeNB in the buffer; After receiving the data receiving state instruction from UE, determine that all needs send in the data of described UE by source SeNB, other data except the data that the current success of described UE receives are the data of the current unsuccessful reception of described UE.

11. MeNB as claimed in claim 9, is characterized in that,

Described receiver module, also for receiving the instruction of receiving described UE from described target SeNB, described instruction is described target SeNB distribute data for asking described MeNB;

Described sending module, also for the data of distributing and needing to send to described UE that walk abreast for described target SeNB and described MeNB.

12. MeNB as claimed in claim 11, is characterized in that,

Described sending module, be further used for after receiving described instruction, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

13. 1 provenance assistant base station SeNB, is characterized in that, described source SeNB specifically comprises:

14. source SeNB as claimed in claim 13, is characterized in that, also comprise:

3rd sending module, for when knowing that described UE needs to switch to target SeNB from source SeNB, to in the SeNB buffer memory of described source, not yet send to the data retransmission of described UE to described MeNB, received from the data not yet sending to UE in the source SeNB buffer memory of described source SeNB by described MeNB, and utilize the data from described source SeNB received to determine the data of the current unsuccessful reception of described UE.

15. 1 kinds of target assistant base station SeNB, it is characterized in that, described target SeNB specifically comprises:

16. target SeNB as claimed in claim 15, is characterized in that,

Described sending module, also for after the described switching command of generation, send to MeNB/ equipment of the core network the instruction that described target SeNB has received described UE, described instruction is described target SeNB distribute data for asking described MeNB/ equipment of the core network; By described MeNB/ equipment of the core network after receiving described instruction, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

17. 1 kinds of data transmission systems, is characterized in that, described data transmission system specifically comprises:

18. systems as claimed in claim 17, is characterized in that, also comprise:

19. systems as claimed in claim 17, is characterized in that, also comprise:

20. 1 kinds of data transmission methods, is characterized in that, said method comprising the steps of:

21. methods as claimed in claim 20, it is characterized in that, described method also comprises:

Described source SeNB is knowing that needing to delete described source SeNB is the SCell that UE configures, and after by the cell configuration of target SeNB being the SCell of described UE, described source SeNB will need the message notice of deleting SCell to described MeNB/ equipment of the core network, by described MeNB/ equipment of the core network after receiving the information needing to delete SCell, stop as described source SeNB distributes the data needing to send to described UE.

22. 1 kinds of data transmission methods, is characterized in that, said method comprising the steps of:

23. methods as claimed in claim 22, it is characterized in that, described method also comprises:

Described MeNB/ equipment of the core network receives the information needing to delete SCell from source SeNB; Wherein, to need to delete the information of SCell be described source SeNB needs to delete the SCell that described source SeNB is UE configuration knowing, and notifies after by the cell configuration of target SeNB being the SCell of described UE;

Described MeNB/ equipment of the core network, after receiving the information needing to delete SCell, stops as described source SeNB distributes the data needing to send to described UE.

24. methods as claimed in claim 22, it is characterized in that, after the cell configuration of described target SeNB is the SCell of described UE by described MeNB/ equipment of the core network, described method also comprises:

According to the delay character of backhaul, described MeNB/ core net determines that new distribute data arrives the time point of described target SeNB, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

25. 1 provenance assistant base station SeNB, is characterized in that, described source SeNB specifically comprises:

26. source SeNB as claimed in claim 25, is characterized in that,

Described notification module, also for knowing that needing to delete described source SeNB is the SCell that UE configures, and after by the cell configuration of target SeNB being the SCell of described UE, to the message notice of deleting SCell be needed to described MeNB/ equipment of the core network, by described MeNB/ equipment of the core network after receiving the information needing to delete SCell, stop as described source SeNB distributes the data needing to send to described UE.

27. 1 kinds of macro base station MeNB/ equipments of the core network, is characterized in that, described MeNB/ equipment of the core network specifically comprises:

28. MeNB/ equipments of the core network as claimed in claim 27, is characterized in that,

Described receiver module, also for receiving the information needing to delete SCell from source SeNB; Wherein, to need to delete the information of SCell be described source SeNB needs to delete the SCell that described source SeNB is UE configuration knowing, and notifies after by the cell configuration of target SeNB being the SCell of described UE;

Described processing module, also for after receiving the information needing to delete SCell, stops as described source SeNB distributes the data needing to send to described UE.

29. MeNB/ equipments of the core network as claimed in claim 27, is characterized in that,

Described processing module, also for after the SCell by the cell configuration of described target SeNB being described UE, determine that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

30. 1 kinds of data transmission systems, is characterized in that, described data transmission system specifically comprises:

31. systems as claimed in claim 30, is characterized in that,

32. 1 kinds of data transmission methods, is characterized in that, said method comprising the steps of:

33. methods as claimed in claim 32, it is characterized in that, described method also comprises:

According to the delay character of backhaul, described MeNB determines that new distribute data arrives the time point of described target SeNB, and be that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.

34. 1 kinds of macro base station MeNB, is characterized in that, described MeNB specifically comprises:

35. MeNB as claimed in claim 34, is characterized in that,

Described processing module also for determining that new distribute data arrives the time point of described target SeNB according to the delay character of backhaul, and is that described target SeNB and described MeNB walk abreast to distribute and need to send to the data of described UE according to described time point.