CN104113875B - A kind of cell switching method, device and equipment - Google Patents

Abstract

The invention discloses a kind of cell switching method, device and equipment, are specially：CBS receives the measurement report that UE is sent, and obtains the target BS mark carried in the measurement report, wherein, target BS mark is used to indicate target BS；CBS indicates that above-mentioned target BS carries out resource distribution according to the corresponding service priority of above-mentioned UE to the data link layer of the target BS；And after configuration, above-mentioned CBS sends data to above-mentioned target BS；CBS sends switching command to above-mentioned UE, which resets the status information of the data link layer of itself according to switching command and switch to above-mentioned target BS.Using technical solution of the present invention, the switching between different DBS and between other CBS is initiated and controlled by CBS, effectively reduce the signaling consumption in handoff procedure, and, the Signalling exchange between CBS and DBS is separated using protocol stack, reduce the forwarding of partial data, so as to avoid the wasting of resources.

Description

A kind of cell switching method, device and equipment

Technical field

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

Background technology

With the rapid development of the communication technology, radio communication service develops into high-speed via the speech business of low rate Multimedia data service, the business demand of rapid growth proposes higher requirement to cordless communication network capacity.At present, lead to Network capacity is improved frequently with two ways：Network is improved by using the wireless access technology of higher capacity and transmission rate to hold Amount, such as LTE (Long Term Evolution, Long Term Evolution), LTE-A (Long Term Evolution-Advanced, length Phase evolution upgrades) etc.；By disposing the small base station (small cells) of a large amount of low-power within the specific limits, increase frequency and answer For improving network capacity.

In mobile communication technology, when UE (User equipment, user equipment) is out of a base station range Cell is moved to the cell in another base station range or when UE is located at the cell boarder in base station range, UE The movable signal of surrounding will change.At this point, in order to ensure the Continued communication of UE and mobile network, the business needed is kept QoS (Quality of Service, quality of service), makes user be attached and in heat with the better base station of signal quality The load balancing between floored community is realized, it is necessary to cell switching be carried out to UE, even if UE by source base station by accessing in point area Network switching extremely accesses network by target BS.When the small base station for disposing a large amount of low-power within the specific limits to improve network During capacity, since the reduction of single subdistrict overlay area makes that switchings of the UE in minizone is more frequent, and UE continually carries out cell Switching will cause substantial amounts of control signaling expense, so as to influence the efficiency of data transmission.In addition, the reduction of cell coverage area makes The fluctuating range increase of portfolio at any time, i.e., the network service in the most of the time among one day in cell coverage area Amount is in low-load state so as to cause a large amount of small base stations, causes the resources such as frequency spectrum and energy far below peak traffic Waste.In addition, number of cells increase so that maintenance system run substantially system information broadcast, paging etc. control signalings into than Example increases, and has further resulted in being significantly increased for control signaling expense.

In order to solve the problem of resource waste generated when disposing small base station, a kind of separated network architecture of data signaling should With and give birth to.Include each network element and the logic interfacing between them in the separated network architecture of data signaling, utilize CBS (Control Base Station, control base station) transmitting-receiving control plane signaling and certain customers face data (hereinafter referred to as data), DBS (Data Base Station, data basestation) transceiving data is reduced network control by way of mask data signaling and opened Pin promotes network capacity, realizes the flexible switch of base station, reduces overall network energy consumption.The separated network architecture of the data signaling It can be applied to LTE, UMTS (UMTS, Universal Mobile TelecommunicationSystem, universal mobile communications System), cdma (Code Division Multiple Access, CDMA access), WiMAX (Worldwide Interoperability for Microwave Access, micro-wave access global inter communication) etc. in various wireless systems, below The separated network architecture of the data signaling will be introduced by taking LTE system as an example.

Data signaling separated network configuration diagram is shown refering to Fig. 1, wherein, CBS is high-power base station, with CN (Core Network；Core net) MME (Mobility Management Entity, mobile management entity) and S-GW (Serving GateWay, Service Gateway) connects, for the foundation and release, mobile management, use carried between UE and network The functions such as the data transmission in family face, the control of DBS and management；DBS (Data Base Station, data basestation) is low-power The separation of control plane signaling and user face data for transceiving data, is realized in base station, since DBS does not have independent control plane, because This each DBS is at least associated with a CBS.

Compared with existing LTE network framework, the main distinction of the separated network architecture of data signaling is RAN (Radio Access Network, wireless access network) one side：When UE is in some CBS coverage, RRC connections remain On the CBS, that is, reduce the Signalling exchange between RAN and CN.Carried out between UE and CBS control plane signaling interaction, and and CBS or DBS carries out the interaction of user face data.

In the network architecture based on LTE, carried out data transmission between UE and eNodeB using air protocol.Refering to Fig. 2 LTE user face protocol stack structure diagrams are shown, which includes PDCP (Packet Data Convergence Protocol, packet data convergence) layer, RLC (Radio Link Control, wireless spread-spectrum technology) layer, MAC (Medium Access Control, medium education) layer and PHY (Physical layer, physical layer).By LTE user face protocol stacks It understands, in transmitting terminal, SDU (Service Data Unit is received from upper strata per sublayer；Service data unit), while will be above-mentioned SDU is exported afterwards as PDU (Protocol Data Unit, protocol Data Unit) to lower floor.Receiving terminal handles the process of data On the contrary, exporting SDU to upper strata i.e. per sublayer, upper strata is received process with above-mentioned transmitting terminal processing data using the SDU as PDU. It is the example that PDCP layers and rlc layer carry out data transfer refering to Fig. 3, it is PDCP SDU that IP layer datas, which are sent to PDCP layers, After PDCP layers carry out the operations such as optional header-compressed, encryption and integrity protection, in addition forming the PDCP of serial number n after header PDU is sent to the RLC PDU that rlc layer is divided into serial number k and k+1；When the rlc layer of receiving terminal is successfully received sequence number After the RLC PDU of k and k+1, that is, it is spliced into the RLC SDU of serial number n and is sent to the PDCP layers of receiving terminal.

In the case of a large amount of small base stations of deployment, the separated network architecture of data message despite the use of, single subdistrict Area coverage is less and less, and UE continually switches in minizone, and mobile management still becomes urgent problem.At present, control UE progress cell switching processed has three ways, such as follows.

A kind of scheme for reducing and forwarding data volume in handoff procedure between source node and destination node is proposed under the prior art. As shown in fig.4, the Signalling exchange for controlling UE progress cell switchings is：

Step 400：Source base station sends measurement control message to UE, to obtain the communication of all UE in source base station compass of competency Situation.

Step 410：UE responds the measurement control message of source base station, to source base station reporting measurement reports.

Step 420：When source base station judges that UE needs to carry out cell switching, handover request message is sent to target BS.

Source base station judges whether UE needs to carry out cell switching according to measurement report.When source base station, to judge that UE needs to carry out small When area switches, increase the frequency of poll UE, the rlc layer receiving status information reported by UE is to confirm the downlink being properly received Data and the downlink data being not successfully received only is forwarded in data forwarding.Meanwhile UE can active reporting before the handover Rlc layer or PDCP layers of receiving status information, to reduce unnecessary data forwarding.

Step 430：Target BS responds the handover request message of source base station.

Step 440：Downlink data is sent to target BS by source base station.

Step 450：After source base station confirms that above-mentioned downlink data is sent, switching command, instruction UE switchings are sent to UE To target BS.

Step 460：After switching command successful switch to the target BS that UE is sent according to source base station, sent to target BS Switch successfully message.

Step 470：Above-mentioned downlink data is sent to UE by target BS.

In the above-mentioned technical solutions, when source base station judgement needs to carry out cell switching to UE, the poll frequency to UE is increased Rate and UE report frequency, the poll and report and can be carried out between step 420 and step 440.It can be seen that using upper , it is necessary to which UE increases the frequency of uploaded state information when the mode of stating carries out cell switching, i.e., a part of interface-free resources can be occupied, reduced The transmission of valid data.Also, since above-mentioned status information is that UE reports to source base station at some discrete time points, so as to The status information that source base station obtains is caused to be not necessarily the real time status information of switching instant, causing data forwarding, there are superfluous It is remaining.In addition, although above-mentioned technical proposal reduces the forwarding of downlink data in cell switch process to a certain extent, not Solve the problems, such as redundancy existing for upstream data.

A kind of side that Data duplication transmission in handoff procedure is reduced using data link layer tunnel is also proposed under the prior art Case.It is sent as shown in figure 5, the PDCP PDU of UE are divided into several RLC PDU in rlc layer, due to a PDCP PDU is divided into several RLC PDU, and therefore, when needing to carry out cell switching to UE, by taking upstream data as an example, source base station is only The remaining data (RLC PDU) that statistics is not properly received by source base station, target BS receive remaining RLC PDU and are forwarded to again Source base station, and above-mentioned remaining RLC PDU are reassembled into PDCP PDU in the rlc layer of source base station.Similarly, passed in downlink In defeated, the RLC PDU of not confirmed UE when switching are sent to target BS by source base station by data link layer, and target BS will Above-mentioned RLC PDU are sent to UE, then recover PDCP PDU in the rlc layer of UE.In above-mentioned handoff procedure, it is necessary to by core Net carries out Signalling exchange.It also, will maintenance and the base station pair when UE does not send completely or receives the data from some base station The PDCP layers and rlc layer status information and data answered, discharge resource after end of transmission is confirmed.

It can be seen that using above-mentioned technical proposal carry out cell switching when, UE switching when need simultaneously safeguard and it is multiple The corresponding link layer state information in base station, so as to add the implementation complexity of UE.Special, it, may when UE is quickly moved It is related to the status information of more than two base station.In addition, using above-mentioned technical proposal carry out cell switching when, it is necessary to and core net (MME/S-GW) Signalling exchange is carried out, so as to cause substantial amounts of control signaling expense.

Also propose that a kind of prioritization scheme of inside of base station switching is applied to the net of geographical location Relatively centralized under the prior art In network.The flow chart for showing cell switching refering to 6：During control UE carries out cell switching, it is first determined whether being Inside of base station switches, if so, keeping the PDCP layers of source base station and the status information of rlc layer and UE being notified to keep the shape of equivalent layer State information, so as to reduce the repetition of data transmission.

The technical solution of above-mentioned cell switching is not suitable for not reducing at a distance of larger scene between multiple small base stations The repetition transmission of data under the scene.In addition, it is needed using above-mentioned technical proposal in cell switch process is carried out by core Net carries out Signalling exchange, therefore can not solve the switching control signaling overhead issues after honeycomb minimizes between core network.

In conclusion during controlling UE progress cell switchings in the network architecture of data separating, there are signalings to open The problem of pin is big, data redundancy and the wasting of resources.

The content of the invention

The embodiment of the present invention provides a kind of cell switching method and device, to solve that signaling consumption exists in the prior art Greatly, data redundancy and the problem of the wasting of resources.

In a first aspect, a kind of cell switching method is provided, including：

The measurement report that UE is sent is received, obtains the target BS mark carried in the measurement report, wherein, the mesh Mark Base Station Identification is used to indicate target BS；

Indication information is sent to indicate priority pair of the target BS according to the corresponding at least one business of the UE The data link layer of the target BS carries out resource distribution

Data are sent to the target BS by the data link layer after resource distribution；

Switching command is sent to the UE, indicates that the UE resets the status information of the data link layer of the UE and switches to The target BS.

With reference to first aspect, in the first possible implementation, identified according to the target BS, judge the mesh Whether mark base station is the base station being governed in scope, and generates indication information according to judging result to indicate the target BS root According to the priority of the corresponding at least one business of the UE, resource distribution is carried out to the data link layer of the target BS.

The possible realization method of with reference to first aspect the first, in second of possible realization method, when the mesh When mark base station is the base station in governed scope, indication information is generated to indicate that the target BS is corresponding extremely according to the UE The priority of a few business carries out resource distribution to the MAC layer of the target BS；Alternatively, indicate the target BS according to The priority of the corresponding at least one business of UE carries out resource distribution to the rlc layer and MAC layer of the target BS；When described When target BS is the base station outside governed scope, indication information is generated to indicate the corresponding CBS of the target BS according to institute The priority of the corresponding at least one business of UE is stated respectively to its MAC layer, rlc layer, PDCP layers of progress resource distribution, makes the mesh Marking the corresponding CBS in base station indicates the target BS to its PDCP layers of progress resource distribution.

Second of possible realization side of the possible realization method of with reference to first aspect the first or first aspect Formula, in the third possible realization method, when the target BS is the base station in governed scope, preserve PDCP layer with The status information of rlc layer and the corresponding data of the UE, and downlink RLC PDU or downlink PDCP PDU are matched somebody with somebody by resource The data link layer postponed is sent to the target BS；When the target BS is the base station outside governed scope, by under Row PDCP SDU and by S-GW send the UE corresponding data institute is sent to by the data link layer after resource distribution The corresponding CBS of target BS is stated, the data are passed through into the data link after resource distribution by the target BS corresponding CBS Layer is sent to the target BS.

Second of possible realization side of the possible realization method of with reference to first aspect the first or first aspect Formula, in the 4th kind of possible realization method, when the target BS is the base station in governed scope, if the target base It standing as the CBS in itself, then the CBS preserves the data, wherein, the data are not receive the feedback information of the UE Downlink data.

With reference to first aspect the first, second, the third or the 4th kind of possible realization method, at the 5th kind In possible realization method, when the target BS is the base station in governed scope, switching command is sent to the UE, is referred to Show that the UE is locally preserving the PDCP layers of the UE and the status information and data of rlc layer, and reconfigure the MAC layer of the UE Status information；Alternatively, sending switching command to the UE, status informations of the UE in the PDCP layers for locally preserving the UE is indicated And data, and reconfigure the rlc layer of the UE and the status information of MAC layer；When the target BS is outside governed scope During base station, switching command is sent to the UE, indicates that the UE reconfigures the MAC layer of the UE, rlc layer, PDCP layers of shape respectively State information.

With reference to first aspect the first, second, the third, the 4th kind or the 5th kind of possible realization method, In 6th kind of possible realization method, when the target BS is the base station in governed scope, receive by the target base Stand forwarding the UE data.

Second aspect provides a kind of cell switching method, including：

Sending measurement report to CBS causes the CBS to obtain target BS mark and according to institute according to the measurement report Stating target BS mark indicates corresponding target BS according to the priority of the corresponding at least one business of UE to the target base The data link layer stood carry out resource distribution and send the data through resource distribution after the configuration after data link Layer is to the target BS；

The switching command that the CBS is sent is received, the state of the data link layer of the UE is reset according to the switching command Information, and switch to the target BS.

With reference to second aspect, in the first possible implementation, the CBS is notified to judge the target BS mark Whether corresponding target BS is base station in the CBS compasss of competency, and notifies the CBS to the mesh according to judging result The data link layer for marking base station carries out resource distribution.

With reference to the first possible realization method of second aspect, in second of realization method, when the target BS For base station in the CBS compasss of competency when, receive and locally preserve PDCP layers and rlc layer in the UE after switching command Status information and data, and reconfigure the status information of the MAC layer of the UE；Alternatively, in local preservation after receiving switching command PDCP layers of status information and data, and reconfigure the rlc layer of the UE and the status information of MAC layer；When the target base Stand for base station outside the CBS compasss of competency when, receive the MAC layer for reconfiguring the UE after switching command respectively, rlc layer, PDCP layers of status information.

With reference to the first possible realization method of second aspect or second of possible realization side of second aspect Formula in the third possible realization method, when the target BS is the base station in the CBS compasss of competency, is counted According to the target BS is sent to, notify the target BS by the data sending to the CBS；When the target BS is During base station outside the CBS compasss of competency, if the target BS is DBS, its data sending to the target BS is led to Know the target BS by the data sending to the corresponding CBS of the target BS；If the target BS is another CBS, then by its data sending to another described CBS.

With reference to the first possible realization method of second aspect, in the 4th kind of possible realization method, pass through resource The data of the target BS are sent to the data link layer postponed not receive the lower line number of the feedback information of the UE According to.

The third aspect provides a kind of cell switching device, including：

The measurement report for receiving the measurement report of UE transmissions, and is sent to mark acquiring unit by receiving unit；

Mark acquiring unit for receiving the measurement report that the receiving unit is sent, and is obtained in the measurement report The target BS mark of carrying, and by the target BS identification transmission to resource configuration unit, wherein, the target BS mark Knowledge is used to indicate target BS；

Resource configuration unit for receiving the target BS mark that the receiving unit is sent, sends indication information to refer to Show data link layer of the target BS according to the priority of the corresponding at least one business of the UE to the target BS Resource distribution is carried out, and the above-mentioned configuration of downlink data transmitting element is notified to finish；

Downlink data transmitting element, after the configuration for receiving the resource configuration unit transmission finishes message, by data The target BS is sent to by the data link layer after resource distribution, and notification command transmitting element data sending finishes；

Command sending unit, after the data sending for receiving the downlink data transmitting element transmission finishes message, to The UE sends switching command, indicates that the UE resets the status information of the data link layer of the UE and switches to the target base It stands.

Fourth aspect provides a kind of cell switching device, including：

Transmitting element causes the CBS to obtain target BS according to the measurement report for sending measurement report to CBS It identifies and indicates corresponding target BS according to the excellent of the corresponding at least one business of the present apparatus according to target BS mark First grade carries out resource distribution to the data link layer of the target BS and data is passed through resource distribution after configuration Data link layer afterwards is sent to the target BS, and data sending finishes described in notification receiving unit；

Receiving unit after the data sending for receiving the transmitting element transmission finishes message, receives the CBS and sends Switching command, and the switching command is sent to switch unit；

Switch unit for receiving the switching command that the receiving unit is sent, and resets this dress according to the switching command The status information for the data link layer put, and switch to the target BS.

5th aspect, provides a kind of base station equipment, including：

RF transceiver, for receiving the measurement report of UE transmissions；

Processor for obtaining the target BS mark carried in the measurement report of the RF transceiver reception, and refers to Show priority of the corresponding target BS according to the corresponding at least one business of the UE, to the data link of the target BS Layer carries out resource distribution, wherein, the target BS mark is used to indicate target BS；

The RF transceiver is additionally operable to after receiving the data link layer configuration to target BS and finishing message, will Data are sent to the target BS by the data link layer after resource distribution, and send switching command, instruction to the UE The UE resets the status information of the data link layer of the UE and switches to the target BS.

6th aspect, provides a kind of user equipment, including：

RF transceiver causes the CBS to obtain target base according to the measurement report for sending measurement report to CBS Station identifications simultaneously indicate corresponding target BS according to the corresponding at least one business of this equipment according to target BS mark Priority carries out resource distribution to the data link layer of the target BS and matches somebody with somebody data by resource after configuration The data link layer postponed is sent to the target BS；And the switching command that the CBS is sent is received, it is sent to processor；

Processor for resetting the status information of the data link layer of this equipment according to the switching command, and switches to institute State target BS.

In the embodiment of the present invention, CBS receives the measurement report that UE is sent, and obtains the target BS carried in the measurement report Mark, wherein, target BS mark is used to indicate target BS；CBS indicates that above-mentioned target BS is corresponding according to above-mentioned UE Service priority carries out resource distribution to the data link layer of the target BS；And after configuration, above-mentioned CBS sends out data It send to above-mentioned target BS；CBS sends switching command to above-mentioned UE, which resets the data link layer of itself according to switching command Status information and switch to above-mentioned target BS.Using technical solution of the present invention, initiate and control by CBS different DBS it Between and the switching between other CBS, effectively reduce the signaling consumption in handoff procedure, also, separated using protocol stack Signalling exchange between CBS and DBS reduces the forwarding of partial data, so as to avoid the wasting of resources.

Description of the drawings

Fig. 1 is the separated network architecture schematic diagram of data signaling in the prior art；

Fig. 2 is LTE user face protocol stacks schematic diagram in the prior art；

Fig. 3 transfers schematic diagram at PDCP layers for data in the prior art between rlc layer；

Fig. 4 is cell handover scheme schematic diagram one in the prior art；

Fig. 5 is cell handover scheme schematic diagram two in the prior art；

Fig. 6 is cell handover scheme schematic diagram three in the prior art；

Fig. 7 is that cell switches detail flowchart one in the embodiment of the present invention；

Fig. 8 is the inside and outside switching schematic diagrames of CBS in the embodiment of the present invention；

Fig. 9 is a kind of protocol stack signaling separate mode in the embodiment of the present invention；

Figure 10 is another protocol stack signaling separate mode in the embodiment of the present invention；

Figure 11 is that cell switches detail flowchart two in the embodiment of the present invention

Figure 12 is that cell switches detail flowchart three in the embodiment of the present invention；

Figure 13 is that cell hand off signaling interacts schematic diagram one in the embodiment of the present invention；

Figure 14 is that cell hand off signaling interacts schematic diagram two in the embodiment of the present invention；

Figure 15 is that cell hand off signaling interacts schematic diagram three in the embodiment of the present invention；

Figure 16 is cell switching device schematic diagram one in the embodiment of the present invention；

Figure 17 is cell switching device schematic diagram two in the embodiment of the present invention；

Figure 18 is cell switching equipment schematic diagram one in the embodiment of the present invention；

Figure 19 is cell switching equipment schematic diagram two in the embodiment of the present invention.

Specific embodiment

During solving to control UE to carry out cell switching in the network architecture of data separating, signaling consumption is big, The problem of data redundancy and the wasting of resources.In the embodiment of the present invention, CBS receives the measurement report that UE is sent, and obtains the measurement The target BS mark carried in report, wherein, target BS mark is used to indicate target BS；CBS indicates above-mentioned target Base station carries out resource distribution according to the corresponding service priority of above-mentioned UE to the data link layer of the target BS；And it is configuring Bi Hou, above-mentioned CBS send data to above-mentioned target BS；CBS sends switching command to above-mentioned UE, and the UE is according to switching command It resets the status information of the data link layer of itself and switches to above-mentioned target BS.Using technical solution of the present invention, pass through CBS It initiates and controls between different DBS and the switching between other CBS, effectively reduce the signaling consumption in handoff procedure, Also, using the Signalling exchange between protocol stack separation CBS and DBS, reduce the forwarding of partial data, so as to avoid resource Waste.

When UE is in the compass of competency of some DBS, with the DBS carry out data interaction, the data S-GW with it is upper It states there are two types of the modes transferred between DBS：First way, S-GW is directly by above-mentioned data sending to DBS or by the DBS It is sent to S-GW；The second way, S-GW send data to CBS first, and DBS is forwarded the data to by CBS, alternatively, DBS will Data sending is to CBS, and then CBS is by the data forwarding to S-GW.In second of realization method, CBS concentrates data Processing, can effectively improve treatment effeciency, convenient for the site collaboration under same CBS.Present invention is generally directed to second of data The network architecture of the data signaling of transfer mode.

Technical solution of the present invention is suitable for 2G, 3G and 4G network, in the embodiment of the present invention, (is referred to by taking LTE network as an example Shown in Fig. 1) it describes in detail.The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.

As shown in fig.7, in the embodiment of the present invention, CBS sends information to UE and the UE is controlled to carry out the detailed of cell switching Flow is：

Step 700：CBS receives the measurement report that UE is sent, and obtains the target BS mark carried in the measurement report.

In the embodiment of the present invention, CBS receives the measurement report that UE is sent, and obtains the target BS carried in the measurement report Mark, and identified according to the target BS, judge that the target BS identifies whether corresponding target BS is above-mentioned CBS administrations model Enclose interior base station.As shown in fig.8, when it is the base station in CBS compasss of competency that the target BS, which identifies corresponding base station, then sentence The fixed cell is switched to switching in CBS；When it is the base station outside CBS compasss of competency that the target BS, which identifies corresponding base station, then The cell is judged to be switched to outside CBS to switch.

When including multiple target BS mark in the measurement report, then corresponding letter is identified according to each target BS The correlation performance parameters such as road quality choose the highest target BS of performance parameter and identify corresponding target BS progress subsequent processing. Above-mentioned target identification is used to indicate target BS, i.e. a target identification corresponds to a target BS.

Step 710：Above-mentioned CBS sends indication information to indicate target BS according to the corresponding at least one business of above-mentioned UE Priority, resource distribution is carried out to the data link layer of the target BS.

Specially：

In the embodiment of the present invention, a kind of user face protocol stack signaling separate mode is shown refering to Fig. 9, wherein, each DBS is associated with a CBS, does not have S1 connections between the DBS and S-GW, is arrived between CBS and DBS by X2 agreements or other termination Agreement connection is held, data are stored in the PDCP layers and rlc layer of CBS；Without physical connection or logical connection between DBS；CBS is responsible for Manage the RRC connections of UE, according to the information such as the qos requirement of link state, service bearer, load condition determine be by CBS or Some DBS associated with the CBS carries out the transmitting-receiving of data；Another user face protocol stack signaling separation side is shown refering to Figure 10 Formula, wherein, each DBS is associated with a CBS, and does not have S1 connections between the DBS and S-GW, and data are stored in CBS's PDCP layers.Second of protocol stack signaling separate mode needs DBS to carry more business, reduce CBS implementation complexity and The implementation complexity of DBS is added, the transmission delay between longer CBS and DBS can be tolerated, but be needed in cell switch process The data not confirmed in the rlc layer of part by UE are abandoned, reduce the efficiency of handoff procedure.

When judging that target BS is the base station in CBS compasss of competency, is i.e. switches in CBS, and believed using the first protocol stack When making separate mode, CBS indicate the target BS according to the corresponding service priority of above-mentioned UE to the MAC layer of the target BS into Row resource distribution；When using second of protocol stack signaling separate mode, CBS indicates that the target BS is corresponding at least according to UE The priority of one business carries out resource distribution to the rlc layer and MAC layer of the target BS.Above-mentioned UE is corresponding at least one The priority of business judges according to the corresponding types of service of UE, for example, when the type of service of corresponding first business of UE is more matchmakers Body business, the type of service of corresponding second business is speech business, then the priority of the first business is excellent higher than the second business First grade, at this point, target BS will to the MAC layer of its own carry out resource distribution, be above-mentioned UE first task and second Business distributes corresponding resource.

It is special, when switching in CBS, if target BS for CBS in itself, the CBS is corresponding at least one according to UE The priority of business carries out resource distribution to the MAC layer of its own, alternatively, the CBS is according to the corresponding at least one business of UE Priority carries out resource distribution to the MAC layer and rlc layer of its own.

When judging target BS for the base station outside above-mentioned CBS compasss of competency, i.e. CBS switches outside, and CBS indicates the target base Stand according to the priority of the corresponding at least one business of above-mentioned UE respectively to the MAC layer of the CBS corresponding to target BS, rlc layer, PDCP layers of progress resource distribution.Further, indicate that the target BS resets the number of target BS by the corresponding CBS of target BS According to link layer, specifically, when using the first protocol stack signaling separate mode, instruction target BS is to the MAC layer of its own Carry out resource distribution；When using second of protocol stack signaling separate mode, instruction target BS to its own MAC layer and Rlc layer carries out resource distribution.

Special, when switching outside CBS, if target BS is another CBS, another CBS is to the MAC of its own Layer, rlc layer, PDCP layers of progress resource distribution.

In the embodiment of the present invention, the data link layer of target BS is carried out with postponing, when judgement target BS is managed for CBS In base station in the range of linchpin, i.e. CBS during switching, CBS sends business release message to source base station, indicates that the source base station resets its number According to link layer, it is specially：When with the first protocol stack signaling separate mode, CBS indicates that the source base station resets the state of MAC layer Information and the corresponding data of the above-mentioned UE of removing；When using second of protocol stack signaling separate mode, CBS indicates the source base station It resets the status information of MAC layer and rlc layer and removes the corresponding data of above-mentioned UE.

It is special, when switching in CBS, if source base station for CBS in itself, which resets the state of the MAC layer of its own Information and the corresponding data of above-mentioned UE are removed, alternatively, resetting the CBS MAC layers and the status information of rlc layer and clear of its own Except the corresponding data of above-mentioned UE.

Step 720：After configuration, data are sent to above-mentioned by above-mentioned CBS by the data link layer after resource distribution Target BS.

In the embodiment of the present invention, above-mentioned CBS is sent to above-mentioned target BS by the data link layer after resource distribution Data are the downlink data for the feedback information for not receiving UE.

When above-mentioned target BS is the base station in CBS compasss of competency, i.e. CBS is interior to be switched, and is believed using the first protocol stack When making separate mode, which is locally preserving PDCP layers of data corresponding with the status information of rlc layer and above-mentioned UE, and will Downlink RLC PDU are sent to above-mentioned target BS；When using second of protocol stack signaling separate mode, above-mentioned CBS is in local PDCP layers of data corresponding with the status information of rlc layer and above-mentioned UE are preserved, and downlink PDCP PDU are sent to above-mentioned mesh Mark base station.

When above-mentioned target BS for base station outside CBS compasss of competency when, which is sent to downlink PDCP SDU above-mentioned The corresponding data sendings of above-mentioned UE that target BS corresponding CBS and S-GW locally preserves it are to above-mentioned CBS, by the CBS By above-mentioned data forwarding to the corresponding CBS of above-mentioned target BS.Further, by the corresponding CBS of target BS by above-mentioned downlink Data (i.e. PDCP PDU) are sent to target BS by the data link layer after resource distribution.Special, when above-mentioned target base Stand for another CBS when, above-mentioned downlink data is preserved by another CBS.

Step 730：Above-mentioned CBS sends switching command to above-mentioned UE, indicates that the UE resets the shape of the data link layer of itself State information simultaneously switches to above-mentioned target BS.

When target BS is the base station in CBS compasss of competency, i.e. CBS is interior to be switched, and using the first protocol stack signaling point During from mode, above-mentioned CBS instructions UE locally preserves the PDCP layers of the UE and the status information and data of rlc layer in the UE, and Reconfigure the status information of the MAC layer of the UE；When using second of protocol stack signaling separate mode, above-mentioned CBS instructions UE exists The UE locally preserves the status information and data of the PDCP layers of the UE, and reconfigures the rlc layer of the UE and the state letter of MAC layer Breath.

When target BS is the base station outside CBS compasss of competency, i.e. when switching outside CBS, CBS instructions UE reconfigures this respectively MAC layer, rlc layer, PDCP layers of the status information of UE.

In the embodiment of the present invention, UE obtains access parameter, and according to the access parameter, switches according to the switching command of CBS To corresponding target BS.

It after the above process, is separated by the signaling to user face protocol stack, only transfers the partial data link in CBS Corresponding data in layer, and retain the status information and data of corresponding data link layer in CBS and UE, ensureing downlink data While integrality and accuracy, the expense of interactive signaling is effectively reduced, has saved system resource.

In the embodiment of the present invention, the transmission process of upstream data is：When target BS is the base station in CBS compasss of competency When, CBS receives the upstream data of the UE by target BS forwarding, and when using the first protocol stack signaling separate mode, UE will After upstream data is sent to the physical layer of target BS and MAC layer processing, by X2 agreements or other end-to-end protocols by MAC SDU is sent to the corresponding CBS of target BS, and upper strata is submitted after the rlc layer processing of the corresponding CBS of target BS or performs phase The control operation answered；When using second of protocol stack signaling separate mode, upstream data is sent to the object of target BS by UE After managing layer, MAC layer and rlc layer processing, RLC SDU are sent to target BS by X2 agreements or other end-to-end protocols and are corresponded to CBS, upper strata is submitted after the PDCP layers processing of the corresponding CBS of target BS or performs corresponding control operation.By upper Process is stated, ensure that upstream data is in the accuracy of transmission process and without Deletional in cell switch process.

When target BS is the base station outside CBS compasss of competency, i.e. CBS switches outside, after UE switches to target BS, target Base station carries out path integration to core network requests message, request, is specially：Target BS to MME transmitting path convert requests, MME asks to send user plane update request to S-GW according to the path integration, and the request message of S-GW responses MME is simultaneously sent out to MME User plane update feedback is sent, MME is true to the corresponding CBS transmitting pathes handover request of target BS according to the user face update feedback Recognize, determine that path integration finishes.

After above-mentioned path integration, switch if this is switched to outside CBS, the corresponding CBS of target BS is to source base The corresponding CBS of standing sends resource and releases order, the corresponding CBS of instruction source base station reset the CBS data link layer (i.e. MAC layer, Rlc layer and PDCP layers) and reset the data link layer of source base station.Specifically, when using the first protocol stack signaling separation side During formula, CBS instruction source base stations reset the status information of the MAC layer of its own and remove the corresponding data of above-mentioned UE；Work as use During second of protocol stack signaling separate mode, CBS instruction source base station reset the MAC layer of its own and the status information of rlc layer with And remove the corresponding data of above-mentioned UE.Target BS can carry out information exchange with UE.Special, when switching outside CBS, if source For CBS in itself, then the CBS resets MAC layer, rlc layer and PDCP layers of the status information of its own and removes above-mentioned UE for base station Corresponding data.

Refering to shown in Figure 11, in the embodiment of the present invention, the detailed process that UE sends information to CBS is：

Step 1100：UE sends measurement report to CBS and CBS is caused to obtain target BS mark and root according to the measurement report Indicate corresponding target BS according to the priority of the corresponding at least one business of the UE to above-mentioned mesh according to target BS mark The data link layer of mark base station carries out resource distribution and data is passed through the data link after resource distribution after configuration Layer is sent to above-mentioned target BS.

In the embodiment of the present invention, the above-mentioned data for being sent to target BS are the lower line number for the feedback information for not receiving UE According to.

UE notices CBS judges whether the corresponding target BS of target BS mark is base station in the CBS compasss of competency, and According to judging result the CBS is notified to carry out resource distribution to the data link layer of above-mentioned target BS.

Step 1110：Above-mentioned UE receives the switching command that above-mentioned CBS is sent, and the data of the UE are reset according to the switching command The status information of link layer, and switch to above-mentioned target BS.

When above-mentioned target BS is the base station in CBS compasss of competency, and uses the first protocol stack signaling separate mode, UE is locally preserving the PDCP layers of the UE and the status information and data of rlc layer, and reconfigures the state letter of the MAC layer of the UE Breath；When using second of protocol stack signaling separate mode, UE preserves the status information and data of the PDCP layers of the UE in local, And reconfigure the rlc layer of the UE and the status information of MAC layer.

When target BS for base station outside CBS compasss of competency when, UE reconfigures the MAC layer of the UE, rlc layer, PDCP respectively The status information of layer.

In the embodiment of the present invention, UE obtains access parameter, and according to the access parameter, switches according to the switching command of CBS To target BS.

When target BS is the base station in CBS compasss of competency, its upstream data is sent to target BS by UE, and notice should The upstream data is sent to the CBS by target BS.When target BS is the base station outside CBS compasss of competency, if above-mentioned target Base station is DBS, then its upstream data is sent to above-mentioned target BS by UE, and the target BS is notified to be sent to the upstream data The corresponding CBS of the target BS；If target BS is another CBS, its upstream data is sent to another CBS by UE.

Refering to shown in Figure 12, in the embodiment of the present invention, the detailed process that CBS and UE carries out information exchange is：

Step 1200：CBS receives the measurement report that UE is sent, and obtains the target BS mark carried in the measurement report.

In the embodiment of the present invention, UE sends measurement report according to the measurement control order of CBS to the CBS, which receives UE The measurement report of transmission obtains the target BS mark carried in the measurement report, and is identified according to the target BS, and judging should Target BS identifies whether corresponding target BS is base station in above-mentioned CBS compasss of competency.

Step 1210：CBS indicates target BS according to the priority of the corresponding at least one business of above-mentioned UE to the target The data link layer of base station carries out resource distribution.

When judging that target BS is the base station in CBS compasss of competency, i.e. switching in CBS, and use it is shown in Fig. 9 the first During protocol stack signaling separate mode, CBS indicates priority pair of the target BS according to the corresponding at least one business of above-mentioned UE The MAC layer of the target BS carries out resource distribution；When using second of protocol stack signaling separate mode shown in Fig. 10, CBS Indicate the target BS according to the priority of the corresponding at least one business of UE to the rlc layer of the target BS and MAC layer into Row resource distribution.

When judging target BS for the base station outside above-mentioned CBS compasss of competency, i.e. CBS switches outside, and CBS indicates the target base It stands according to the corresponding service priority of above-mentioned UE respectively to the MAC layer of the CBS corresponding to target BS, rlc layer, PDCP layers of progress Resource distribution.Further, indicate that the target BS resets the data link layer of target BS by the corresponding CBS of target BS, Specifically, when using the first protocol stack signaling separate mode, instruction target BS carries out resource to the MAC layer of its own and matches somebody with somebody It puts；When using second of protocol stack signaling separate mode, instruction target BS carries out the MAC layer and rlc layer of its own Resource distribution.

Step 1220：After configuration, data are sent to by above-mentioned CBS by the data link layer after resource distribution State target BS.

In the embodiment of the present invention, above-mentioned CBS is sent to the data of target BS by the data link layer after resource distribution Not receive the downlink data of the feedback information of UE.

When above-mentioned target BS is the base station in CBS compasss of competency, i.e. CBS is interior to be switched, and is believed using the first protocol stack When making separate mode, which is locally preserving PDCP layers of data corresponding with the status information of rlc layer and above-mentioned UE, and will Downlink RLC PDU are sent to above-mentioned target BS；When using second of protocol stack signaling separate mode, above-mentioned CBS is in local PDCP layers of data corresponding with the status information of rlc layer and above-mentioned UE are preserved, and downlink PDCP PDU are sent to above-mentioned mesh Mark base station.

When above-mentioned target BS is the base station outside CBS compasss of competency, which will be in downlink PDCP SDU and S-GW The corresponding data sendings of above-mentioned UE preserved are to the corresponding CBS of above-mentioned target BS.Further, it is corresponding by target BS Above-mentioned downlink data is sent to target BS by CBS.It is special, when above-mentioned target BS is another CBS, this another CBS preserves above-mentioned downlink data.

Step 1230：CBS sends switching command to UE, which resets the shape of the data link layer of itself according to switching command State information simultaneously switches to above-mentioned target BS.

Specially：

When above-mentioned target BS is the base station in CBS compasss of competency, and uses the first protocol stack signaling separate mode, UE is locally preserving the PDCP layers of the UE and the status information and data of rlc layer, and reconfigures the state letter of the MAC layer of the UE Breath；When using second of protocol stack signaling separate mode, UE preserves the status information and data of the PDCP layers of the UE in local, And reconfigure the rlc layer of the UE and the status information of MAC layer.

When target BS for base station outside CBS compasss of competency when, UE reconfigures the MAC layer of the UE, rlc layer, PDCP respectively The status information of layer.

In the embodiment of the present invention, UE obtains access parameter, and according to the access parameter, switches according to the switching command of CBS To target BS.

When target BS for base station in CBS compasss of competency when, its upstream data is sent to target BS by UE, in notice It states target BS and the upstream data is sent to the CBS.When target BS is the base station outside CBS compasss of competency, if above-mentioned mesh Mark base station is DBS, then its upstream data is sent to above-mentioned target BS by UE, and the target BS is notified to send the upstream data To the corresponding CBS of the target BS；If target BS be another CBS, UE by its upstream data be sent to it is above-mentioned another CBS。

In the embodiment of the present invention, when source base station is DBS, handoff procedure carries out data forwarding without source base station, if at this point, When source base station does not have new business, faster resource consumption can have been reduced into low energy consumption state.Also, use the technology of the present invention side Case under the first protocol stack signaling separate mode, forwards rlc layer data packet by CBS, so as to ensure that lossless switching, has Effect avoids unnecessary data and retransmits, and improves switching efficiency.It, need not between CBS and core net in switching inside CBS Signalling exchange so as to effectively reduce handoff delay, reduces the expense of control signaling.

Based on above-mentioned technical proposal, describe in detail with reference to concrete application scene to cell switching.

Refering to shown in Figure 13, when target BS is the base station in CBS compasss of competency, i.e. the interior switchings of CBS are assisted using the first Stack signaling separate mode is discussed, and when source base station and target BS are DBS, the Signalling exchange flow of cell switching is：

Step 1300：CBS sends measurement control message to UE.

Step 1301：UE responds above-mentioned measurement control message, to CBS reporting measurement reports.

CBS judges whether to need to carry out cell switching to the UE according to the measurement report.

Step 1302：When CBS determines to need to carry out cell switching to above-mentioned UE, send service bearer to target BS and build Vertical message.

Target BS establishes message according to the service bearer and carries out resource distribution to its MAC layer.

Step 1303：CBS sends service bearer release message to source base station.

Source base station resets its MAC layer according to the service bearer release message.

Step 1304：CBS sends switching command to UE.

UE preserves the status information of PCDP and rlc layer according to the switching command, resets the status information of its MAC layer.

Step 1305：CBS sends downlink data to DBS.

Step 1306：Access parameter access target BS of the UE in switching command, and send switching to CBS and complete, Cell switch process terminates.

In the embodiment of the present invention, above-mentioned steps 1304 and 1305 can exchange, that is, first carry out step 1305, then perform step 1304。

Refering to shown in Figure 14, when target BS is the base station outside CBS compasss of competency, i.e. CBS switches outside, using the first association Stack signaling separate mode is discussed, source base station DBS, when target BS is another CBS, the Signalling exchange flow of cell switching is：

Step 1400：CBS sends measurement control message to UE.

Step 1401：UE responds above-mentioned measurement control message, to CBS reporting measurement reports.

CBS judges whether to need to carry out cell switching to the UE according to the measurement report.

Step 1402：When CBS determines to need to carry out cell switching to above-mentioned UE when source, handover request is sent to target CBS Message.

Step 1403：Target CBS responds above-mentioned handover request message, and request confirmation message is sent to source CBS.

Step 1404：After source CBS receives above-mentioned request confirmation message, switching command is sent to UE.

Step 1405：Source CBS sends bearer service release message to source DBS.

Step 1406：Source CBS sends downlink data to target CBS.

Step 1407：UE accesses target CBS according to switching command, and notifies target CBS that switching is completed.

Step 1408：Target CBS receives the path handoff response of core net to core net transmitting path handover request After message, service bearer release message is sent to CBS, instruction source CBS discharges the resource of its data link layer.

Refering to shown in Figure 15, when target BS is the base station in CBS compasss of competency, i.e. the interior switchings of CBS are assisted using second Stack signaling separate mode is discussed, and source base station is DBS, when target BS is another DBS, the signaling process interaction of cell switching For：

Step 1500：CBS sends measurement control message to UE.

Step 1501：UE responds above-mentioned measurement control message, to CBS reporting measurement reports.

CBS judges whether to need to carry out cell switching to the UE according to the measurement report.

Step 1502：When CBS determines to need to carry out cell switching to above-mentioned UE when source, service bearer is sent to target BS Establish message.

Target BS establishes message according to the service bearer and carries out resource distribution to its MAC layer.

Step 1503：CBS sends service bearer release message to source base station.

Source base station resets its MAC layer according to the service bearer release message.

Step 1504：CBS sends switching command to UE.

UE preserves the status information of PCDP and rlc layer according to the switching command, resets the status information of its MAC layer.

Step 1505：CBS sends downlink data to DBS.

Step 1506：Access parameter access target BS of the UE in switching command, and send switching to CBS and complete, Cell switch process terminates.

In the embodiment of the present invention, above-mentioned steps 1504 and 1505 can exchange, that is, first carry out step 1505, then perform step 1504。

It is single including receiving the present invention also provides a kind of cell switching device refering to shown in Figure 16 based on above-described embodiment Member 160, mark acquiring unit 161, resource configuration unit 162, downlink data transmitting element 163, command sending unit 164, In,

The measurement report for receiving the measurement report of UE transmissions, and is sent to mark acquiring unit by receiving unit 160 161；

Mark acquiring unit 161 for receiving the measurement report of the transmission of receiving unit 160, and is obtained in measurement report and taken The target BS mark of band, and by above-mentioned target BS identification transmission to resource configuration unit 162；

Resource configuration unit 162 for receiving the target BS mark that the mark acquiring unit 161 is sent, indicates phase The target BS answered according to the priority of the corresponding at least one business of above-mentioned UE, to the data link layer of above-mentioned target BS into Row resource distribution, and the 163 above-mentioned configuration of downlink data transmitting element is notified to finish, wherein, above-mentioned target BS identifies to refer to Show target BS；

Downlink data transmitting element 163, after the configuration for receiving the transmission of resource configuration unit 162 finishes message, by number Above-mentioned target BS, and 164 downlink data of notification command transmitting element are sent to according to by the data link layer after resource distribution It is sent；

Command sending unit 164 finishes message for receiving the data sending that above-mentioned downlink data transmitting element 163 is sent Afterwards, switching command is sent to above-mentioned UE, indicates that the UE resets the status information of the data link layer of the UE and switches to above-mentioned mesh Mark base station.

In addition, above-mentioned cell switching device further includes upstream data transmitting element 165, it is specifically used for, when above-mentioned target base Stand for base station in the present apparatus compass of competency when, receive the data of the above-mentioned UE forwarded by the target BS.

Refering to shown in Figure 17, the present invention also provides a kind of cell switching device, including transmitting element 170, receiving unit 171 and switch unit 172, wherein,

Transmitting element 170 causes the CBS to obtain target base according to the measurement report for sending measurement report to CBS Station identifications simultaneously indicate corresponding target BS according to the preferential of local corresponding at least one business according to target BS mark Grade the data link layer of above-mentioned target BS is carried out resource distribution and after the configuration by data by resource distribution after Data link layer be sent to above-mentioned target BS, and data sending described in notification receiving unit 171 finishes；

Receiving unit 171 after the data sending for receiving the transmission of transmitting element 170 finishes message, receives what CBS was sent Switching command, and the switching command is sent to switch unit 172；

Switch unit 172 for receiving the switching command of the transmission of receiving unit 171, and resets this according to the switching command The status information of the data link layer of device, and switch to above-mentioned target BS.

In addition, above-mentioned cell switching device further includes upstream data transmitting element 173, specifically for working as above-mentioned target BS For base station in above-mentioned CBS compasss of competency when, by its data sending to above-mentioned target BS, notify above-mentioned target BS by data It is sent to the CBS；When above-mentioned target BS is the base station outside above-mentioned CBS compasss of competency, if above-mentioned target BS is DBS, Then by its data sending to above-mentioned target BS, above-mentioned target BS is notified to correspond to the data sending to above-mentioned target BS CBS；If above-mentioned target BS is another CBS, by its data sending to another above-mentioned CBS.

Refering to shown in Figure 18, the present invention also provides a kind of base station equipment, including RF transceiver 180, processor 181, Wherein,

RF transceiver 180, for receiving the measurement report of UE transmissions；

Processor 181, for obtaining the target BS mark carried in the measurement report of the RF transceiver reception, and Indicate data-link of the corresponding target BS according to the priority of the corresponding at least one business of above-mentioned UE to above-mentioned target BS Road floor carries out resource distribution, wherein, above-mentioned target BS mark is used to indicate target BS；

RF transceiver 180 is additionally operable to after receiving the data link layer configuration to target BS and finishing message, by number Above-mentioned target BS is sent to according to by the data link layer after resource distribution, and switching command is sent to above-mentioned UE, instruction should UE resets the status information of its data link layer and switches to above-mentioned target BS.

Refering to shown in Figure 19, the present invention also provides a kind of user equipment, including RF transceiver 190 and processor, Wherein,

RF transceiver 190 causes the CBS to obtain target according to above-mentioned measurement report for sending measurement report to CBS Base Station Identification simultaneously indicates corresponding target BS according to the corresponding at least one business of this equipment according to above-mentioned target BS mark Priority resource distribution is carried out to the data link layer of above-mentioned target BS and data are passed through into resource after configuration Above-mentioned target BS is sent to the data link layer postponed, and receives the switching command that the CBS is sent, is sent to processor 191；

Processor 191 for resetting the status information of the data link layer of this equipment according to the switching command, and switches to The target BS.

The above process is only the embodiment that technical solution of the present invention is applied in LTE system, in addition, the technology of the present invention Scheme can also be applied to UMTS, in various 2G, 3G and 4G networks such as cdma2000, WiMAX, although the association in heterogeneous networks It is not exactly the same to discuss stack division, but technical solution of the present invention may be employed, respective handling is carried out to data link layer, with drop Low signaling consumption and data redundancy.

In conclusion in the embodiment of the present invention, CBS receives the measurement report that UE is sent, and obtains and is carried in the measurement report Target BS mark；CBS indicates corresponding target BS according to above-mentioned target BS mark, according to the corresponding business of above-mentioned UE Priority carries out resource distribution to the data link layer of the target BS；And after configuration, above-mentioned CBS sends out downlink data It send to above-mentioned target BS；CBS sends switching command to above-mentioned UE, which resets the data link layer of itself according to switching command Status information and switch to above-mentioned target BS.By the way that the protocol stack function of CBS and DBS is separated, when using first During kind protocol stack signaling separate mode, downlink data is made to be forwarded to DBS after passing through the PDCP layers of CBS and rlc layer processing, makes uplink Data are forwarded to CBS by the physical layer and MAC layer of DBS.CBS sends carrying to DBS and establishes and carry release message, DBS roots UE is associated according to the message management and realizes that the user based on loading priority dispatches in MAC layer.Believe when using second of protocol stack When making separate mode, downlink data by being forwarded to DBS after the processing of the PDCP layers of CBS, upstream data by DBS physical layer, MAC layer and rlc layer are forwarded to CBS.CBS sends carrying to DBS and establishes and carry release message, and DBS is closed according to the message management Join UE, determine transmission modes of the UE in rlc layer, and user's scheduling based on loading priority is realized in MAC layer.

It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program Product.Therefore, the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware can be used in the present invention Apply the form of example.Moreover, the computer for wherein including computer usable program code in one or more can be used in the present invention The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of product.

The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices is generated for real The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.

These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or The function of being specified in multiple boxes.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps is performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, those skilled in the art can carry out the embodiment of the present invention various modification and variations without departing from this hair The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention And its within the scope of equivalent technologies, then the present invention is also intended to comprising including these modification and variations.

Claims (26)

1. a kind of cell switching method, which is characterized in that including：

The measurement report that user equipment (UE) is sent is received, obtains the target BS mark carried in the measurement report, wherein, institute It states target BS mark and is used to indicate target BS；

Indication information is sent to indicate number of the target BS according to the corresponding types of service of the UE to the target BS Resource distribution is carried out according to link layer；

When the target BS is the base station in governed scope, the indication information indicates the target BS according to The corresponding types of service of UE carry out resource distribution to the media access control MAC layer of the target BS；Or the instruction mesh Base station is marked to carry out the wireless spread-spectrum technology rlc layer and MAC layer of the target BS according to the corresponding types of service of the UE Resource distribution；

Data are sent to the target BS by the data link layer after resource distribution；

Switching command is sent to the UE, indicates that the UE resets the status information of the data link layer of the UE and switches to described Target BS.

2. the method as described in claim 1, which is characterized in that also

When the target BS is the base station outside governed scope, the indication information indicates the corresponding control of the target BS Base station CBS processed assembles PDCP layers and provides to its MAC layer, rlc layer, grouped data respectively according to the corresponding types of service of the UE Source configures, and the corresponding CBS of the target BS is made to indicate the target BS to its PDCP layers of progress resource distribution.

3. method as claimed in claim 2, which is characterized in that be sent to data by the data link layer after resource distribution The target BS, specifically includes：

When the target BS is the base station in governed scope, PDCP layer and the status information of rlc layer and described are preserved The corresponding data of UE, and downlink RLC protocol data unit PDU or downlink PDCP PDU are passed through into the data-link after resource distribution Road floor is sent to the target BS；

When the target BS is the base station outside governed scope, by downlink PDCP service data units SDU and by servicing The corresponding data of the UE that gateway S-GW is sent are sent to the target BS pair by the data link layer after resource distribution The data are sent to described by the CBS answered by the corresponding CBS of the target BS by the data link layer after resource distribution Target BS.

4. the method as described in claim 1, which is characterized in that be sent to data by the data link layer after resource distribution The target BS, further includes：

When the target BS is the base station in governed scope, if the target BS is CBS, institute is preserved by the CBS Data are stated, wherein, the data are the downlink data for the feedback information for not receiving the UE.

5. method as claimed in claim 2, which is characterized in that send switching command to the UE, indicate that the UE is reset and be somebody's turn to do The status information of the data link layer of UE, specifically includes：

When the target BS is the base station in governed scope, switching command is sent to the UE, indicates the UE at this Ground preserves the PDCP layers of the UE and the status information and data of rlc layer, and reconfigures the status information of the MAC layer of the UE；Or Person sends switching command to the UE, indicates status informations and data of the UE in the PDCP layers for locally preserving the UE, lays equal stress on Configure the rlc layer of the UE and the status information of MAC layer；

When the target BS is the base station outside governed scope, switching command is sent to the UE, indicates the UE difference Reconfigure MAC layer, rlc layer, PDCP layers of the status information of the UE.

6. the method as described in claim 1, which is characterized in that indicate that the UE resets the state letter of the data link layer of the UE It ceases and switches to after the target BS, further include：

When the target BS is the base station in governed scope, receive what the UE forwarded by the target BS was sent Data.

7. a kind of cell switching method, which is characterized in that including：

Sending measurement report to control base station CBS causes the CBS to obtain target BS mark according to the measurement report；

The switching command that the CBS is sent is received, the state of the data link layer of user equipment (UE) is reset according to the switching command Information, and switch to the target BS and identify corresponding target BS；The data link layer of the target BS is by described CBS carries out resource distribution according to the corresponding types of service of the UE；Wherein, in the target BS model is administered for the CBS When enclosing interior base station, grouped data convergence PDCP layers and the radio chains of the UE are locally being preserved after receiving the switching command Road controls the status information and data of rlc layer, and reconfigures the status information of the media access control MAC layer of the UE；Alternatively, it connects Receive in the status information and data of the PDCP layers for locally preserving the UE after switching command, and reconfigure the rlc layer of the UE with And the status information of MAC layer.

8. the method for claim 7, which is characterized in that the data link of user equipment (UE) is reset according to the switching command The status information of layer, further includes：

When the target BS is the base station outside the CBS compasss of competency, institute is reconfigured respectively after receiving the switching command State MAC layer, rlc layer, PDCP layers of the status information of UE.

9. method as claimed in claim 7 or 8, which is characterized in that switch to the target BS and identify corresponding target base After standing, further comprise：

When the target BS is the base station in the CBS compasss of competency, by its data sending to the target BS, notice The target BS is by the data sending to the CBS；

When the target BS is the base station outside the CBS compasss of competency, if the target BS is data basestation DBS, By its data sending to the target BS, notify that the target BS is corresponding to the target BS by the data sending CBS；If the target BS is another CBS, by its data sending to another described CBS.

10. the method for claim 7, which is characterized in that be sent to by the data link layer after resource distribution described The data of target BS are the downlink data for the feedback information for not receiving the UE.

11. a kind of cell switching device, which is characterized in that including：

The measurement report for receiving the measurement report of user equipment (UE) transmission, and is sent to mark and obtains list by receiving unit Member；

Mark acquiring unit for receiving the measurement report that the receiving unit is sent, and is obtained and carried in the measurement report Target BS mark, and by the target BS identification transmission to resource configuration unit, wherein target BS mark is used In instruction target BS；

Resource configuration unit for receiving the target BS mark that the receiving unit is sent, sends indication information to indicate It states target BS and resource distribution is carried out to the data link layer of the target BS according to the corresponding types of service of the UE, and lead to Know that the above-mentioned configuration of downlink data transmitting element finishes；

When the target BS is the base station in governed scope, the indication information indicates the target BS according to The corresponding types of service of UE carry out resource distribution to the media access control MAC layer of the target BS；Or the instruction mesh Base station is marked to carry out the wireless spread-spectrum technology rlc layer and MAC layer of the target BS according to the corresponding types of service of the UE Resource distribution；

After the configuration for receiving the resource configuration unit transmission finishes message, data are passed through for downlink data transmitting element Data link layer after resource distribution is sent to the target BS, and notification command transmitting element data sending finishes；

Command sending unit, for receiving after the data sending that the downlink data transmitting element is sent finishes message, to described UE sends switching command, indicates that the UE resets the status information of the data link layer of the UE and switches to the target BS.

12. device as claimed in claim 11, which is characterized in that be also the base station being governed outside scope in the target BS When, the indication information indicates that the corresponding control base station CBS of the target BS distinguishes according to the corresponding types of service of the UE PDCP layers of progress resource distribution are assembled to its MAC layer, rlc layer, grouped data, make the corresponding CBS instructions institute of the target BS Target BS is stated to its PDCP layers of progress resource distribution.

13. device as claimed in claim 12, which is characterized in that the downlink data transmitting element is specifically used for：

When the target BS is the base station in governed scope, PDCP layer and the status information of rlc layer and described are preserved The corresponding data of UE, and downlink RLC protocol data unit PDU or downlink PDCP PDU are passed through into the data-link after resource distribution Road floor is sent to the target BS；

When the target BS is the base station outside governed scope, by downlink PDCP service data units SDU and by servicing The corresponding data of the UE that gateway S-GW is sent are sent to the target BS pair by the data link layer after resource distribution The data are sent to described by the CBS answered by the corresponding CBS of the target BS by the data link layer after resource distribution Target BS.

14. device as claimed in claim 11, which is characterized in that the downlink data transmitting element is additionally operable to：

When the target BS is the base station in governed scope, if the target BS to be local, is locally preserving institute Data are stated, wherein, the data are the downlink data for the feedback information for not receiving the UE.

15. device as claimed in claim 12, which is characterized in that the command sending unit is specifically used for：

When the target BS is the base station in governed scope, switching command is sent to the UE, indicates the UE at it The PDCP layers of the UE and the status information and data of rlc layer locally are preserved, and reconfigures the status information of the MAC layer of the UE； Alternatively, sending switching command to the UE, indicate that the UE preserves the status information and data of the PDCP layers of the UE in its local, And reconfigure the rlc layer of the UE and the status information of MAC layer；

When the target BS is the base station outside governed scope, switching command is sent to the UE, indicates the UE difference Reconfigure MAC layer, rlc layer, PDCP layers of the status information of the UE.

16. device as claimed in claim 11, which is characterized in that further include upstream data transmitting element, be specifically used for：

When the target BS is the base station in governed scope, receive what the UE forwarded by the target BS was sent Data.

17. a kind of cell switching device, which is characterized in that including：

Transmitting element causes the CBS to obtain target according to the measurement report for sending measurement report to control base station CBS Base Station Identification；

Receiving unit after the data sending for receiving the transmitting element transmission finishes message, receives cutting for the CBS transmissions Order is changed, and the switching command is sent to switch unit；

Switch unit for receiving the switching command that the receiving unit is sent, and resets the present apparatus according to the switching command The status information of data link layer, and switch to the target BS and identify corresponding target BS；The number of the target BS It is that resource distribution is carried out according to the corresponding type of service of user equipment (UE) by the CBS according to link layer；Wherein, in the target When base station is the base station in the CBS compasss of competency, the grouped data of the UE is locally being preserved after receiving the switching command The status information and data of PDCP layers and wireless spread-spectrum technology rlc layer are assembled, and reconfigures the media access control MAC of the UE The status information of layer；Alternatively, lay equal stress on after receiving switching command in the status information and data of the PDCP layers for locally preserving the UE Configure the rlc layer of the UE and the status information of MAC layer.

18. device as claimed in claim 17, which is characterized in that the switch unit is additionally operable to：

When the target BS is the base station outside the CBS compasss of competency, this dress is reconfigured respectively after receiving switching command MAC layer, rlc layer, PDCP layers of the status information put.

19. the device as described in claim 17 or 18, which is characterized in that further include upstream data transmitting element, be specifically used for：

When the target BS is the base station in the CBS compasss of competency, by its data sending to the target BS, notice The target BS is by the data sending to the CBS；

When the target BS is the base station outside the CBS compasss of competency, if the target BS is data basestation DBS, By its data sending to the target BS, notify that the target BS is corresponding to the target BS by the data sending CBS；If the target BS is another CBS, by its data sending to another described CBS.

20. a kind of base station equipment, which is characterized in that including：

RF transceiver, for receiving the measurement report of user equipment (UE) transmission；

Processor for obtaining the target BS mark carried in the measurement report of the RF transceiver reception, and indicates phase The target BS answered carries out resource distribution according to the corresponding types of service of the UE to the data link layer of the target BS, In, the target BS mark is used to indicate target BS；

When the target BS is the base station in governed scope, the indication information indicates the target BS according to The corresponding types of service of UE carry out resource distribution to the media access control MAC layer of the target BS；Or the instruction mesh Base station is marked to carry out the wireless spread-spectrum technology rlc layer and MAC layer of the target BS according to the corresponding types of service of the UE Resource distribution；

The RF transceiver is additionally operable to after receiving the data link layer configuration to target BS and finishing message, by data The target BS is sent to by the data link layer after resource distribution, and switching command is sent to the UE, described in instruction UE resets the status information of the data link layer of the UE and switches to the target BS.

21. equipment as claimed in claim 20, which is characterized in that be also the base station being governed outside scope in the target BS When, the indication information indicates that the corresponding control base station CBS of the target BS distinguishes according to the corresponding types of service of the UE PDCP layers of progress resource distribution are assembled to its MAC layer, rlc layer, grouped data, make the corresponding CBS instructions institute of the target BS Target BS is stated to its PDCP layers of progress resource distribution.

22. equipment as claimed in claim 21, which is characterized in that the RF transceiver is specifically used for：

When the target BS is the base station in governed scope, PDCP layer and the status information of rlc layer and described are preserved The corresponding data of UE, and downlink RLC PDU or downlink PDCP PDU are sent to by the data link layer after resource distribution The target BS；

When the target BS is the base station outside governed scope, by downlink PDCP SDU and as described in being sent S-GW The corresponding data of UE are sent to the corresponding control base station CBS of the target BS by the data link layer after resource distribution, by The data are sent to the target BS by the corresponding CBS of the target BS by the data link layer after resource distribution.

23. equipment as claimed in claim 21, which is characterized in that the RF transceiver is specifically used for：

When the target BS is the base station in governed scope, switching command is sent to the UE, indicates the UE at it The PDCP layers of the UE and the status information and data of rlc layer locally are preserved, and reconfigures the status information of the MAC layer of the UE； Alternatively, sending switching command to the UE, indicate that the UE preserves the status information and data of the PDCP layers of the UE in its local, And reconfigure the rlc layer of the UE and the status information of MAC layer；

When the target BS is the base station outside governed scope, switching command is sent to the UE, indicates the UE difference Reconfigure MAC layer, rlc layer, PDCP layers of the status information of the UE.

24. equipment as claimed in claim 20, which is characterized in that the RF transceiver is specifically used for：

When the target BS is the base station in governed scope, the number of the UE forwarded by the target BS is received According to.

25. a kind of user equipment (UE), which is characterized in that including：

RF transceiver causes the CBS to obtain mesh according to the measurement report for sending measurement report to control base station CBS Mark Base Station Identification；And the switching command that the CBS is sent is received, it is sent to processor；

Processor for resetting the status information of the data link layer of the UE according to the switching command, and switches to the mesh Mark the corresponding target BS of Base Station Identification；The data link layer of the target BS is according to user equipment (UE) pair by the CBS The type of service answered carries out resource distribution；Wherein, when the target BS is the base station in the CBS compasss of competency, connect PDCP layers of the grouped data convergence of the UE and the shape of wireless spread-spectrum technology rlc layer are locally being preserved after receiving the switching command State information and data, and reconfigure the status information of the media access control MAC layer of the UE；Alternatively, after receiving switching command In the status information and data of the PDCP layers for locally preserving the UE, and reconfigure the rlc layer of the UE and the state letter of MAC layer Breath.

26. UE as claimed in claim 25, which is characterized in that the RF transceiver is additionally operable to：

When the target BS is the base station outside the CBS compasss of competency, if the target BS is DBS, by its data The target BS is sent to, notifies the target BS by the data sending to the corresponding CBS of the target BS；If institute Target BS is stated as another CBS, then by its data sending to another described CBS.