CN101820652A - Acquisition method of data information and base station - Google Patents
Acquisition method of data information and base station Download PDFInfo
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Abstract
The invention discloses an acquisition method of data information and a base station. The method comprises the following steps: a target base station sends a signaling to a source base station, wherein the signaling carries instructive information instructing that user equipment has been rebuilt onto the target base station; and the target base station receives reply information from the source base station and acquires the data information of the user equipment from the reply information. The invention improves the transmission efficiency of network.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of acquisition methods and base station of data message.
Background technology
Along with the development of network architecture flattening and the appearance of the removable access way of multiple high-speed wideband, the wireless communication system of evolution can provide higher transmission rate, shorter transmission delay and lower cost, can also support 3G (Third Generation) Moblie partnership project (The 3rd Generation Partnership Project, abbreviate 3GPP as) mobility between the inner connecting system, and the mobility between 3GPP connecting system and the non-3GPP connecting system etc., impel mobile communication system to propose framework theory of future generation.
Fig. 1 is Long Term Evolution (the Long Time Evolution according to correlation technique, abbreviate LTE as) schematic diagram of station layout under the framework, as shown in Figure 1, LTE/ System Architecture Evolution (the System Architecture Evolution that cordless communication network proposes, abbreviate SAE as) the base station (eNodeB of architecture evolution of future generation, abbreviate eNB as) form the Radio Access Network (Evolved Radio Access Network abbreviates E-RAN as) of evolution; The packet core network of evolution is made up of Mobility Management Entity (Mobility Management Entity abbreviates MME as) and gateway (Serving Gateway abbreviates S-GW as) entity.Interface between eNB and the core network is the S1 interface, and wherein, the interface between eNB and the MME is expressed as S1-MME, is used to finish the chain of command function of mobile management and S1 interface; Interface between eNB and the S-GW is expressed as S1-U, is used to finish the function such as route, transmission of user data.Link to each other by X2 interface between the eNB, X2 interface be used to finish subscriber equipment (User Equipment abbreviates UE as) under state of activation the mobile management function and the information interaction between the eNB of equity.
In the LTE system, integrity for mobile communication system, when UE detects Radio Link Failure, handoff failure maybe can not satisfy wireless connections and reshuffle (RRC Connection Reconfiguration, wherein, RRC is Radio Resource control, during Radio Resource Control) reasons such as requirement, introduced the thought of wireless connections reconstructions (RRC Connection Re-establishment), UE need carry out the process of cell selecting (suitable cell of selection was called new sub-district so that select proper cell this moment, can be the connect sub-district at place of former UE, also can be different sub-districts) initiate the flow process that wireless connections are rebuild.
Fig. 2 is the flow chart according to the LTE system wireless connection reconstruction of correlation technique, and as shown in Figure 2, wireless connections are rebuild concrete flow process and comprised that following step S201 is to step S203:
Step S201:UE sends wireless connections in new sub-district to the base station and rebuilds request (RRC Connection Reestablishment Request) signaling, and carries the sign of UE, the former cell ID at UE place etc. therein.
Step S202: the base station sends wireless connections to this UE and rebuilds (RRC Connection Reestablishment) signaling for after this UE distributes required Radio Resource.
Step S203:UE disposes new parameter after receiving the wireless connections reconstruction signaling of sending the base station, sends the wireless connections reconstruction to the base station and finishes (RRC Connection Reestablishment Complete) signaling.
After the wireless connections reconstruction was finished, UE had rebulid in new sub-district and has been used for the dedicated channel that signaling is transmitted, and then, UE need set up the dedicated channel that is used for data passes and carry out transfer of data.Because UE has set up connection in former sub-district, the data of a part of uplink and downlink have been transmitted, the data message that has received is preserved in the base station under former sub-district, the data message that does not receive, the data message that has transmitted, data message of Chuan Diing etc. not, because the LTE system adopts PDCP (Packet Data Convergence Protocol in the agreement of wave point user plane, abbreviate PDCP as), therefore, the data message that preserve the base station under the former sub-district comprises up PDCP sequence number (Sequence Number, abbreviate SN as), Hyper Frame Number (Hyper Frame Number the abbreviates HFN as) information that receives, descending PDCP sequence number, the Hyper Frame Number information of transmitting etc.
If the new sub-district at UE place belongs to different base stations with former sub-district, the data message that the base station under the then new sub-district need obtain the data message that has received of preservation, the data message that does not receive, the data message that has transmitted to the base station under the former sub-district, do not transmit etc. are so that the high efficiency of transmission that user data can not lost in new sub-district.In prior protocols, base station during switching that network enabled side is initiated under the former sub-district sends the data message of preserving by sequence state transmission (SN Status Transfer) base station under new sub-district, but, in the wireless connections process of reconstruction, base station under the new sub-district how initiatively under former sub-district the base station obtain the problem of data message, effective solution is not proposed at present as yet.
Summary of the invention
In the wireless connections process of reconstruction at correlation technique, base station under the new sub-district can't obtain the problem of data message and propose the present invention in active base station under former sub-district, for this reason, main purpose of the present invention is to provide a kind of scheme of obtaining of improved data message, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of acquisition methods of data message.
Acquisition methods according to data message of the present invention comprises: target BS sends to carry to source base station and is used to indicate subscriber equipment to be reconstructed into the signaling of the indication information of target BS; Target BS receives the answer message from source base station, and obtains the data message of subscriber equipment from reply message.
Preferably, after source base station sent the request of reconstruction, said method also comprised at target BS: source base station receives the signaling from target BS, transmits a reply message to target BS, wherein, replys the data message that carries subscriber equipment in the message.
Preferably, target BS and source base station communicate by the interface between the base station.
Preferably, the interface between the base station is an X2 interface.
Preferably, target BS and source base station communicate via core net.
Preferably, target BS comprises to source base station transmission signaling: target BS sends signaling to core net; Core net receives the signaling from target BS, and signaling is forwarded to source base station.
Preferably, before the answer message of target BS reception from source base station, said method also comprises: source base station receives the signaling from core net, and returns answer message to core net; Core net receives the signaling from source base station, and will reply forwards to target BS.
Preferably, carry the sign of subscriber equipment in the indication information.
Preferably, data message comprises one of following or its combination: the Hyper Frame Number information of the Hyper Frame Number information of ascending packet data convergence protocol sequence number, reception, downlink grouped data convergence protocol sequence number, transmission.
To achieve these goals, according to another aspect of the present invention, provide a kind of base station.
Base station according to the present invention comprises: sending module, be used for after the wireless connections of subscriber equipment have been reconstructed into target BS by source base station, under the situation of base station as target BS, send signaling to source base station, and in signaling, carry the indication information that the wireless connections of indicating subscriber equipment have been reconstructed into target BS; Receiver module under the situation of base station as target BS, receives the answer message from source base station; Acquisition module is used for obtaining from the answer message that receiver module receives the data message of subscriber equipment.
By the present invention, target BS sends the request of reconstruction to source base station, and according to the reconstruction answer message that receives from source base station, obtain the data message of subscriber equipment, solved in the wireless connections process of reconstruction of correlation technique, base station under the new sub-district can't obtain the problem of data message in active base station under former sub-district, and then has improved the efficiency of transmission of network.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the station layout under the LTE framework of correlation technique;
Fig. 2 is the flow chart according to the LTE system wireless connection reconstruction of correlation technique;
Fig. 3 is the flow chart according to the acquisition methods of the data message of the embodiment of the invention;
Fig. 4 is the schematic diagram according to the station layout of the embodiment of the invention one;
Fig. 5 is the flow chart of the data message of the UE that obtains source base station of the target BS according to the embodiment of the invention one and embodiment two;
Fig. 6 is the schematic flow sheet that initiatively obtains data message according to the embodiment of the invention three by core net;
Fig. 7 is the structured flowchart according to the base station of the embodiment of the invention.
Embodiment
Functional overview
Consider in the wireless connections process of reconstruction of correlation technique, base station under the new sub-district can't be initiatively under former sub-district the base station obtain the problem of data message, the embodiment of the invention provides a kind of scheme of obtaining of improved data message, can solve the problems referred to above by dual mode, first kind of mode is the base station initiatively obtains the data message of UE by the interface between the base station method, to be the base station initiatively obtain the method for the data message of UE by core net to the second way, can realize that the base station initiatively obtains the data message of UE.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Method embodiment
According to embodiments of the invention, a kind of acquisition methods of data message is provided, be applied to comprise the wireless communication system of at least two base stations and a UE, two base stations here are called source base station and target BS, need to prove that the role between source base station and the target BS can exchange.
Fig. 3 is the flow chart according to the acquisition methods of the data message of the embodiment of the invention, as shown in Figure 3, the wireless connections that this method is used for subscriber equipment are reconstructed into after the target BS by source base station, make target BS obtain the data message that this subscriber equipment is preserved at source base station, comprise that specifically following step S302 is to step S304:
Step S302, target BS sends signaling to source base station, and this signaling carries and is used to indicate subscriber equipment to be reconstructed into the indication information of target BS.Wherein, this signaling can carry the sign of UE.
Step S304, target BS receives the answer signaling from source base station, and from reply signaling, obtain the data message of UE, wherein, reply the data message that carries UE in the signaling, the data message here can comprise one of following or its combination: the HFN information of the HFN information of up PDCP SN, reception, descending PDCP SN, transmission.
By this embodiment, target BS sends to carry to source base station and is used to indicate subscriber equipment to be reconstructed into the signaling of target BS, and according to the answer signaling that receives from source base station, obtain the data message of UE, after having solved the wireless connections process of reconstruction of correlation technique, base station under the new sub-district can't obtain the problem of data message in active base station under former sub-district, and then has improved the efficiency of transmission of network.
The acquisition methods of above-mentioned data message can be realized by following dual mode:
Mode one
Have the interface between the base station between source base station and the target BS, the interface between the base station here can be X2 interface, and in this case, the implementation procedure of said method comprises:
For step S302, target BS sends signaling by the interface between the base station to source base station, and carries the information that UE has been reconstructed into target BS therein.After this, source base station is by the signaling of the reception of the interface between the base station from target BS, and transmit a reply message to target BS by the interface between the base station, wherein, the data message that carries UE in the message is replied in this reconstruction, and the data message of the UE here comprises the data message that this UE preserves at source base station.
For step S304, target BS receives answer message from source base station by the interface between the base station, and obtains the data message of this UE according to replying message.
Mode two
Target BS all links to each other with core net by the S1 interface with source base station, and target BS and source base station communicate via core net.
For step S302, target BS sends signaling to core net, carries the indication information that the wireless connections that are used to indicate subscriber equipment have been reconstructed into target BS in this signaling; Core net receives the signaling from target BS, and this signaling is forwarded to source base station.
After this, source base station receives the signaling from core net, and returns answer message to core net, carries the data message of this UE in this answer signaling; Core net receives the answer message from source base station, and will reply forwards to target BS.
For step S304, target BS receives answer message from source base station by core net, and obtains the data message of this UE according to replying message.The data message here comprises the data message that this UE preserves at source base station.
Be described in detail below in conjunction with the implementation procedure of example the above-mentioned dual mode of the embodiment of the invention.
Embodiment one
This embodiment is corresponding to above-mentioned mode one, and Fig. 4 is the schematic diagram according to the station layout of the embodiment of the invention one, as shown in Figure 4, in the LTE system, all have X2 interface between base station 1, base station 2 and the base station 3, UE is positioned at the sub-district 1 under the base station 1, is in connection status.At this moment, comprise the data message of this UE in the base station 1, the data message that this data message comprises the data message that this UE received this moment, the data message that does not receive, the data message that has transmitted, do not transmit etc.Because the LTE system adopts PDCP in the agreement of wave point user plane, therefore, the data message preserved of base station 1 can comprise one of following or its combination: the HFN information of the HFN information of up PDCP SN, reception, descending PDCP SN, transmission.
In the present embodiment, base station 1 is a source base station, and base station 3 is a target BS.At a time, UE sends measurement report to base station 1, comprises the best several neighboring BS information of signal in this measurement report.After base station 1 obtains this measurement report, do handover decisions, with the Target cell that switch as UE the sub-district 2 of base station 2, base station 1 sends handoff request signaling (Handover Request) by X2 interface to base station 2.At this moment, the candidate cell that base station 1 also selects base station 3 affiliated subdistricts 3 to switch as UE, simultaneously, sent the handoff request signaling to base station 3, and in this handoff request signaling, carry the contextual information of UE in former sub-district 1, the contextual information here comprises the information of S1 interface, the security information of UE, the ability information of UE, RAB (Radio Access Bearer the abbreviates RAB as) information of UE.
After base station 2 receives the handoff request signaling, for the UE Resources allocation and send switching request acknowledgement message (Handover Request Acknowledge).At this moment, UE, selects base station 3 affiliated subdistricts 3 to initiate wireless connections and rebuilds flow process after UE carries out cell selecting owing to Radio Link Failure is carried out cell selecting.Wireless connections are rebuild flow process as shown in Figure 2, do not repeat them here.Because base station 3 has obtained the contextual information of UE in former sub-district 1, UE sets up the dedicated channel that is used for user data delivery after rebuliding the dedicated channel that is used for the signaling transmission at base station 3 affiliated subdistricts 3.Since before UE 1 set up connection in the sub-district, transmitted the data of a part of uplink and downlink, that is, 1 data message of having preserved this UE in the base station.At this moment, base station 3 need obtain the data message of this UE to 1 affiliated base station 1, the former sub-district of UE.
Fig. 5 is the flow chart of the data message of the UE that obtains source base station of the target BS according to the embodiment of the invention one and embodiment two, and as shown in Figure 5, the flow process that base station 3 obtains this UE data message to base station 1 comprises that following step S501 is to step S502:
Step S501: base station 3 (that is, target BS) sends signaling by X2 interface to base station 1 (that is, source base station), and carries this UE be reconstructed into the information of affiliated subdistrict 3 of target BS and the sign of this UE (that is, above-mentioned step S302) in this signaling.
Step S502: after base station 1 receives this signaling, send a reply signaling by X2 interface to base station 3, and in this answer signaling, carrying the data message of this UE this moment, the data message here can comprise one of following or its combination: the HFN information of the HFN information of up PDCP SN, reception, descending PDCP SN, transmission.
After this, the data message that base station 3 receives this UE that base station 1 sends (promptly, above-mentioned step S304), be applied in the follow-up data transfer, like this, this UE can not lose in new sub-district 3/downlink data, has avoided the repetition Data transmission simultaneously, makes that the efficiency of transmission of network is higher.
Embodiment two
This embodiment is corresponding to above-mentioned mode one, and wherein, base station 1 can be used as source base station or target BS, and base station 2 equally also can be used as source base station or target BS.
In the LTE system, comprise two base station and two UE that X2 interface is arranged, two base stations are base station 1 and base station 2, two UE are respectively UE1 and UE2, and UE1 is positioned at the sub-district 1 under the base station 1, is in connection status, UE2 is positioned at the sub-district 2 under the base station 2, also is in connection status.At this moment, the data message that the data message that comprises UE1 and UE2 in base station 1 and the base station 2 respectively, the data message here comprise the data message that UE received in base station separately this moment, the data message that does not receive, the data message that has transmitted, do not transmit etc.Because the LTE system adopts PDCP in the agreement of wave point user plane, therefore, the data message here can comprise one of following or its combination: the HFN information of the HFN information of up PDCP SN, reception, descending PDCP SN, transmission.
At a time, UE1 sends measurement report to base station 1, and carries the best several neighboring BS information of signal in measurement report.After base station 1 obtains measurement report, do handover decisions, the Target cell that the sub-district 2 of base station 2 is switched as UE1, base station 1 sends handoff request signaling (Handover Request) to base station 2, and in the handoff request signaling, carrying the contextual information of UE1 in former sub-district 1, the contextual information here comprises the information of S1 interface, the security information of UE1, the ability information of UE1, the RAB information of UE1.
After UE1 sent measurement report, UE1, selected base station 2 affiliated subdistricts 3 to initiate wireless connections and rebuilds flow process after UE1 carries out cell selecting owing to Radio Link Failure is carried out cell selecting.Wireless connections are rebuild flow process as shown in Figure 2, do not repeat them here.After UE1 rebulid the dedicated channel that is used for the signaling transmission at base station 2 affiliated subdistricts 3, because the handoff request signaling that has sent by base station 1 base station 2 obtains the context of UE1, the dedicated channel that is used for user data delivery was set up in base station 2 for UE1.Because UE1 has successfully inserted sub-district 3 by rebuilding, therefore, base station 2 does not send the Handover Request Acknowledge signaling that is used to switch to sub-district 2 to base station 1.
Since before UE1 1 set up connection in the sub-district, transmitted the data of a part of uplink and downlink, that is, 1 data message of having preserved this UE1 in the base station.At this moment, base station 2 need obtain the data message of this UE1 to 1 affiliated base station 1, the former sub-district of UE1.
Wherein, base station 2 comprises to the flow process that base station 1 obtains this UE1 data message: base station 2 sends signaling by X2 interface to base station 1, and in this signaling, carry the information that UE1 has been reconstructed into the affiliated subdistrict of base station 2, and the sign of this UE1 (that is, above-mentioned step S302); After base station 1 receives this signaling, send a reply signaling to base station 2, and in this answer signaling, carrying the data message of current UE 1, the data message here can comprise one of following or its combination: the HFN information of the HFN information of up PDCP SN, reception, descending PDCP SN, transmission.As can be seen, this flow process is identical with the flow process that Fig. 4 describes, and this moment, base station 1 was a source base station, and base station 2 is a target BS.
After a period of time, UE2 is the sub-district 2 under 2 in the base station still, is in connection status.At a time, UE2 sends measurement report to base station 2, and carries the best several neighboring BS information of signal in measurement report.After base station 2 obtains this measurement report, do handover decisions, the Target cell that the sub-district 1 of base station 1 is switched as UE2, base station 2 sends handoff request signaling (Handover Request) to base station 1, and in this handoff request signaling, carrying the contextual information of UE2 in former sub-district 2, the contextual information here comprises the information of S1 interface, the security information of UE2, the ability information of UE2, the RAB information of UE2.
After UE2 sent measurement report, UE2 was owing to Radio Link Failure is carried out cell selecting, and UE2 selects base station 1 affiliated subdistrict 1 to initiate wireless connections reconstruction flow process after carrying out cell selecting.Wireless connections are rebuild flow process as shown in Figure 2, do not repeat them here.After UE2 rebulid the dedicated channel that is used for the signaling transmission at base station 1 affiliated subdistrict 1, because the handoff request signaling that has sent by base station 2 base station 1 obtains the context of UE2, the dedicated channel that is used for user data delivery was set up in base station 1 for UE2.Because UE2 has successfully inserted sub-district 1 by rebuilding, therefore, base station 1 does not send the Handover Request Acknowledge signaling that is used to switch to sub-district 1 to base station 2.
Since before UE2 2 set up connection in the sub-district, transmitted the data of a part of uplink and downlink, that is, 2 data messages of having preserved this UE2 in the base station.At this moment, base station 1 needs 2 affiliated base stations 2, sub-district to obtain the data message of this UE2.
Wherein, base station 1 comprises to the flow process that base station 2 obtains this UE2 data message: base station 1 sends signaling by X2 interface to base station 2, and in this signaling, carry the information that UE2 has been reconstructed into the affiliated subdistrict of base station 1, and the sign of this UE2 (that is, above-mentioned step S302); After base station 2 receives this signaling, send a reply signaling to base station 1, and in this answer signaling, carry the data message of current UE 2, the data message here can comprise one of following or its combination: the HFN information of the HFN information of up PDCP SN, reception, descending PDCPSN, transmission (that is, above-mentioned step S304).As can be seen, this flow process is identical with the flow process that Fig. 4 describes, and this moment, base station 2 was a source base station, and base station 1 is a target BS.
Base station 1 receives the data message (that is, above-mentioned step S304) of the UE2 that sends base station 2, is applied in the follow-up data transfer, like this, UE2 can not lose in new sub-district 1/downlink data, has avoided the repetition Data transmission simultaneously, makes that the efficiency of transmission of network is higher.
Embodiment three
This embodiment is applied to the LTE system corresponding to above-mentioned mode two, and base station 1 is connected with core net by the S1 interface respectively with base station 2, does not have X2 interface between base station 1 and the base station 2.UE is positioned at the sub-district 1 under the base station 1, is in connection status.Sub-district 1 and base station 2 affiliated subdistricts 2, sub-district 3 be neighboring BS relationship each other.At this moment, comprise the data message of this UE in the base station 1, the data message that the data message here comprises the data message that this UE received this moment, the data message that does not receive, the data message that has transmitted, do not transmit etc.Because the LTE system adopts PDCP in the agreement of wave point user plane, so the data message preserved of base station 1 can comprise one of following or its combination: the HFN information of the HFN information of up PDCP SN, reception, descending PDCP SN, transmission.In this embodiment, base station 1 is a source base station, and base station 2 is a target BS.
At a time, UE sends measurement report to base station 1, and carries the best several neighboring BS information of signal in measurement report.After base station 1 obtains measurement report, do handover decisions, with the Target cell that switch as UE the sub-district 2 of base station 2, base station 1 sends the handoff request signaling to base station 2.
Owing to do not have X2 interface between base station 1 and the base station 2, therefore, base station 1 comprises to the step that base station 2 is sent in the handoff request signaling: base station 1 sends handoff request signaling (Handover Required) by the S1 interface to core net, core net sends handoff request signaling (Handover Request) to base station 2 after receiving this signaling, all carry the contextual information of UE in former sub-district 1 in these two handoff request signalings, the contextual information here comprises the information of S1 interface, the security information of UE, the ability information of UE, the RAB information of UE.
After base station 2 receives the handoff request signaling, be prepared as the UE Resources allocation and send switching request acknowledgement message (Handover Request Acknowledge).At this moment, UE is owing to Radio Link Failure is carried out cell selecting, and UE selects base station 2 affiliated subdistricts 3 to initiate wireless connections reconstruction flow process after carrying out cell selecting.Wireless connections are rebuild flow process as shown in Figure 2, do not repeat them here.Because base station 2 has obtained the contextual information of UE in former sub-district 1, after UE rebulids the dedicated channel that is used for the signaling transmission at base station 2 affiliated subdistricts 3, set up the dedicated channel that is used for user data delivery then.Since before UE 1 set up connection in the sub-district, transmitted the data of a part of uplink and downlink, that is, 1 data message of having preserved this UE in the base station.At this moment, base station 2 need obtain the data message of this UE to 1 affiliated base station 1, the former sub-district of UE.
Fig. 6 initiatively obtains the schematic flow sheet of data message according to the embodiment of the invention three by core net, and as shown in Figure 6, the flow process that base station 2 obtains this UE data message to base station 1 comprises that following step S601 is to step S604:
Step S601: base station 2 sends signaling by the S1 interface to core net, and carries the information that this UE has been reconstructed into the affiliated subdistrict of base station 2 in this signaling, and the sign of the sign of this UE, source base station.
Step S602: after core net receives the signaling of base station 2 transmissions, send signaling by the S1 interface to base station 1, and in this signaling, carry the information that this UE has been reconstructed into the affiliated subdistrict of base station 2.
Above step S601 and step S602 are corresponding to above-mentioned step S302.
Step S603: after base station 1 receives the signaling that core net sends, send signaling to core net, and in this signaling, carrying the data message of current this UE, the data message here can comprise one of following or its combination: the HFN information of the HFN information of up PDCP SN, reception, descending PDCP SN, transmission.This signaling can also be carried the sign of base station 2
Step S604: after core net receives the data message of this UE that base station 1 sends, send signaling to base station 2, this signaling is carried the data message of this UE, and the data message here comprises: current up PDCP SN or the HFN information that receives or descending PDCPSN or HFN information of transmitting or above combination in any.
Device embodiment
According to embodiments of the invention, provide a kind of base station.Fig. 7 is the structured flowchart according to the base station of the embodiment of the invention, and as shown in Figure 7, this base station comprises: sending module 2, receiver module 4, acquisition module 6 are described said structure below.
Sending module 2, the wireless connections that are used for subscriber equipment are reconstructed into after the target BS by source base station, under the situation of base station, send signaling to source base station, and in this signaling, carry the indication information that the wireless connections that are used to indicate subscriber equipment have been reconstructed into target BS as target BS; Receiver module 4 under the situation of base station as target BS, receives the answer message from source base station, wherein, carries the data message of UE this moment in this answer message; Acquisition module 6 is connected to receiver module 4, is used for obtaining from the answer message that receiver module 4 receives the data message of this UE.
Wherein, sending module 2 can be handled by following dual mode:
(1) sending module 2 sends signaling by the interface between the base station to source base station.
(2) sending module 2 sends signaling via core net to source base station.
The signaling that sending module 2 sends comprises the information that subscriber equipment has been reconstructed into target BS.
Wherein, receiver module 4 can be handled by following dual mode:
(1) receiver module 4 is by the answer message of the reception of the interface between the base station from source base station.
(1) receiver module 4 is via the answer message of core net reception from source base station.
The data message that comprises this UE this moment in the answer message that receiver module 4 receives.
By this embodiment, provide the base station that initiatively to trigger the data message that obtains UE.
In sum, pass through the above embodiment of the present invention, target BS sends to source base station and carries the signaling that subscriber equipment has been reconstructed into the target BS indication information, and according to the answer message that receives from source base station, obtain the data message of UE, wherein, target BS and source base station can communicate by the interface between the base station or by core net, solved in the correlation technique, base station under the new sub-district can't be initiatively under former sub-district the base station obtain the problem of data message, UE can not lost/downlink data in the new sub-district of target BS, avoided the repetition Data transmission simultaneously, improved the efficiency of transmission of network.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
More than describing is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the acquisition methods of a data message is characterized in that, described method comprises:
Described target BS sends to carry to described source base station and is used to indicate subscriber equipment to be reconstructed into the signaling of the indication information of described target BS;
Described target BS receives the answer message from described source base station, and obtains the data message of described subscriber equipment from described answer message.
2. method according to claim 1 is characterized in that, after described source base station sent described reconstruction request, described method also comprised at described target BS:
Described source base station receives the described signaling from described target BS, transmits a reply message to described target BS, wherein, carries the data message of described subscriber equipment in the described answer message.
3. method according to claim 1 and 2 is characterized in that, described target BS and described source base station communicate by the interface between the base station.
4. method according to claim 3 is characterized in that, the interface between described base station is an X2 interface.
5. method according to claim 1 is characterized in that, described target BS and described source base station communicate via core net.
6. method according to claim 5 is characterized in that, described target BS sends described signaling to described source base station and comprises:
Described target BS sends described signaling to described core net;
Described core net receives the described signaling from described target BS, and described signaling is forwarded to described source base station.
7. method according to claim 6 is characterized in that, before the answer message of described target BS reception from described source base station, described method also comprises:
Described source base station receives the described signaling from described core net, and returns described answer message to described core net;
Described core net receives the described signaling from described source base station, and with described answer forwards to described target BS.
8. according to each described method in the claim 1,2,4 to 7, it is characterized in that, carry the sign of described subscriber equipment in the described indication information.
9. according to each described method in the claim 1,2,4 to 7, it is characterized in that described data message comprises one of following or its combination:
The Hyper Frame Number information of the Hyper Frame Number information of ascending packet data convergence protocol sequence number, reception, downlink grouped data convergence protocol sequence number, transmission.
10. a base station is characterized in that, comprising:
Sending module, be used for after the wireless connections of subscriber equipment have been reconstructed into target BS by source base station, under the situation of described base station as target BS, send signaling to described source base station, and in described signaling, carry the indication information that the wireless connections of indicating described subscriber equipment have been reconstructed into described target BS;
Receiver module under the situation of described base station as described target BS, receives the answer message from described source base station;
Acquisition module is used for obtaining from the described answer message that described receiver module receives the data message of described subscriber equipment.
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