CN103546928A

CN103546928A - Load managing method, device and system

Info

Publication number: CN103546928A
Application number: CN201210240260.7A
Authority: CN
Inventors: 梁靖; 鲍炜; 张大钧
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-07-11
Filing date: 2012-07-11
Publication date: 2014-01-29
Anticipated expiration: 2032-07-11
Also published as: CN103546928B

Abstract

The invention discloses a load managing method, device and system and relates to the communication technology. When a macro base station determines that user plane load of a user needs to be switched to a small base station, the macro base station transmits a user plane load transfer request carrying the information of the user plane load requiring transfer and the bottom configuration information of the user in the macro base station, the macro base station and the small base station can partially transfer the user plane load according to the user plane load transfer request, and accordingly load switching under the network deployment with the user plane being separated from a control plane.

Description

A kind of load bearing management method, Apparatus and system

Technical field

The present invention relates to the communication technology, relate in particular to a kind of load bearing management method, Apparatus and system.

Background technology

E-UTRAN(Evolved Universal Terrestrial Radio Access Network, the universal land radio access web of evolution) as shown in Figure 1, E-UTRAN is by eNB(base station for the network architecture) form.MME(Mobility Management Entity, Mobility Management Entity) with between eNB adopt S1-MME interface to be connected; ENB completes Access Network function, with UE(User Equipment, subscriber equipment) pass through idle port communication.For each, be attached to the UE of network, all have a MME to provide service for it, this MME is called the serving MME of UE.S1-MME interface, for UE provides chain of command service, comprises mobile management and bearer management function.S-GW(Serving Gateway, gateway) with between eNB adopt S1-U interface to be connected, for each, be attached to the UE of network, all have a S-GW to provide service for it, this S-GW is called the service S-GW of UE.S1-U interface provides the service of user's face for UE, the user face data of UE is by S1-U GTP(GPRS Tunneling Protocol, GPRS Tunnel Protocol, GPRS:General Packet Radio Service, GPRS) carrying is transmitted between S-GW and eNB.

EPS(Evolved Packet System, the grouping system of evolution) system is (by E-UTRAN and EPC(Evolved Packet Core, the packet-based core networks of evolution) form) by EPS, be carried as UE the IP(Internet Protocol with external network (as Internet), Internet protocol are provided) connect.As shown in Figure 2, EPS carrying is based upon UE and P-GW(Packet Data Domain Gateway, packet data gateway) between, for transmitting user data between UE and P-GW.Upstream data that UE sends is coated is mapped to an EPS carrying, through EPS carrying transmission, arrives after P-GW, with the form of IP bag, enters external network, is routed to Correspondent Node; The packet that Correspondent Node sends, through the P-GW of external network arrival UE, PGW is mapped to an EPS carrying according to certain rule by packet, and through EPS, UE is passed in carrying.

UE and P-GW are according to the protocol port of the feature of packet (as high level data bag (as TCP/UDP(Transmission Control Protocol/User Datagram Protocol, the transmission control protocol/User Datagram Protoco (UDP)) bag carrying in the IP address of source node and destination node, IP bag) number etc.) and default mapping ruler complete the mapping that packet carries to EPS; Mapping ruler arranges when EPS carrying is set up.

EPS carrying is for carrying the user face data of UE, and corresponding S-GW and P-GW are called as user's face core net node; Set up EPS carrying, need to carry out control and management by the chain of command signaling of UE, chain of command node corresponding to core net is MME.

In Fig. 2, a complete EPS carrying is comprised of three parts: S5/S8 carrying, S1 carrying and empty port load-supporting.S5/S8 carrying is relation one to one between carrying with S1; S1 carrying and empty port load-supporting (the empty port load-supporting is here also referred to as DRB(Data Radio Bearer, Data Radio Bearer), for carrying the radio bearer of user face data) between be relation one to one.Wherein, S5/S8 carrying, S1 carrying realizes by GTP tunnel.

Article one, GTP tunnel is by the transport layer address (as: IP address) of tunnel two end nodes and the TEID(Tunnel Endpoint Identifier of end node distribution, Tunnel End Point Identifier) identify.The S1 of take carries corresponding GTP tunnel as example: its up direction is assigned to TEID by user's face transport layer address (IP address) of S-GW and S-GW and identifies.ENB receives from eating dishes without rice or wine the upstream data bag of UE transmission, after packet is processed, carries out GTP encapsulation, in GTP packet header, fills in the TEID that S-GW distributes; This GTP is encapsulated in outer IP bag, the destination address in IP packet header extends this as user's face transport layer address of S-GW, then sends again.After S-GW receives GTP bag, just can determine this packet is from which GTP tunnel according to TEID.Similarly, the descender of S1 carrying GTP tunnel is assigned to TEID by user's face transport layer address (IP) of eNB and eNB and identifies.

As shown in Figure 3, the chain of command of UE connect by UE, be connected with RRC between service eNB and eNB and MME between S1 connect to form.Between each UE in connection status and service eNB, set up and have RRC(Radio Resource Control, Radio Resource is controlled) connect; Accordingly, between eNB and MME, can connect corresponding with RRC connection for each UE in connection status sets up a S1.

RRC connects by 3 SRB(Signal Radio Bearer, Signaling Radio Bearer) form: SRB0, SRB1 and SRB2, wherein SRB0 is without process PDCP(Packet Data Convergence Protocol, packet data convergence protocol) and RLC(Radio Link Control, wireless link is controlled) layer processes.

At existing LTE/LTE-A(Long Term Evolution, Long Term Evolution/Long Term Evolution-Advanced, long-term evolution upgrading) in network, the chain of command of UE connects and is connected all via same eNB with user's face.

As shown in Figure 4, the chain of command protocol stack between UE and network as shown in Figure 5 for user face protocol stack between UE and network.User plane protocol comprises PDCP, RLC, and MAC(MediumAccess Control, media are got involved key-course) and PHY(Physical layer, physical layer) layer; Chain of command agreement comprises RRC and NAS(Non-Access-Statum, Non-Access Stratum), wherein, rrc layer message need to be passed through the processing of user plane protocol layer (PDCP/RLC/MAC/PHY layer), then transmits eating dishes without rice or wine; NAS layer message is transmitted in eating dishes without rice or wine to be encapsulated in RRC message; At S1-MME interface, transmission in S1 connection.

In existing LTE/LTE-A network, the layers such as the RRC/PDCP/RLC/MAC/PHY of UE are all positioned at same eNB, the NAS layer of UE etc., and layer is positioned at has set up with above-mentioned eNB the MME that the S1 for this UE is connected.

In existing protocol, PDCP and RLC entity are corresponding with DRB/SRB1/SRB2, each DRB and SRB1, and SRB2 distinguishes corresponding a set of PDCP and RLC entity; DRB/SRB1/SRB2 converges at MAC layer.Therefore, UE understands the while by overlapping PDCP and RLC entity more, but only has a MAC layer and physical layer entity.

In existing hierarchical network as shown in Figure 6, Macro eNB(macro base station) community provides basis to cover, Local eNB(small base station) community provides focus to cover, between Local eNB and Macro eNB, have data/signaling interface (wire/wireless interface), UE can be operated under Macro eNB or Local eNB.

The cell coverage area of controlling due to Local eNB is little, and the UE of service is few, so the UE that is connected to Local eNB often can obtain better service quality, as: obtain higher service rate, higher-quality link.Therefore,, when being connected to the UE of Macro eNB and approaching the community of control of Local eNB, can be switched to the service that Local eNB provides to obtain Local eNB; When community that UE controls away from Local eNB, need to be switched to the community that Macro eNB controls, to keep wireless connections.

In legacy network, the handoff procedure of UE as shown in Figure 7:

Step S701, source eNB measure configuration to UE, and UE carries out and measures according to the measurement configuration information of receiving;

Step S702, at source eNB, be on the ascending resource that distributes of UE, UE reporting measurement result, this measurement result will be carried out switch decision for auxiliary source eNB;

Step S703, source eNB measure judgement.If source eNB determines to switch, continue to carry out subsequent step;

Step S704, source eNB send handover request message to target eNB, comprise to switch to prepare relevant information in this message;

Step S705, target eNB, with reference to this message, are carried out acceptance judging according to the QoS information of carrying to be accepted.If target eNB allows to receive this UE, carry out bottom configuration, to prepare switching;

Step S706, target eNB are returned to handover request ack message to source eNB, comprise a RRC container (RRC container) in this message, and particular content is to trigger the switching command that UE switches;

Step S707, source eNB give UE by the switching command transparent transmission of receiving (not making any modification) on the downlink resource of scheduling; Receive after switching command, UE stops at source eNB and carries out data transmit-receive;

The serial-number-state information (as: sequence number of the downlink data packet of unsuccessful transmission, first sequence number that target eNB can be distributed etc.) that step S708, source eNB send current data sends to target eNB; Transmission transmission state is continuous in order to guarantee the sequence number of the data that source and target eNB receives and dispatches, and avoids packet loss or repeat occurring;

After step S708, source eNB can by own from core net, receive but not yet successfully send to the downlink data packet of UE to send to target eNB so that target eNB is transferred to UE; Similarly, source eNB can from the discontinuous UE upstream data of the sequence number bag of eating dishes without rice or wine to receive, (error of transmission of eating dishes without rice or wine may cause the bag sending UE successfully to receive early than the coated DeNB first sending by own, cause the DeNB packet receiving sequence number discontinuous) send to target eNB, so that target eNB is after receiving the packet lacking that UE retransmits, by the continuous Packet Generation of sequence number to core net.

Step S709, UE send lead code (Preamble) to target eNB, to set up the uplink synchronous with target eNB;

Step S710, target eNB are returned to response message, carry the ascending resource (for subsequent transmission) and the UE Timing Advance (for adjusting the up delivery time of UE, setting up uplink synchronous) that for UE, distribute;

Step S711, UE return to handoff completion message to target eNB; After this, between UE and target eNB, can carry out the transmitting-receiving of data.

Step S712, target eNB are initiated path conversion request to MME, and carrying target eNB is user's face transport layer address (IP address) and the descending GTP tunnel sign (TEID) that each UE EPS carries appointment respectively;

The request of step S713, MME request S-GW bearing modification, carrying target eNB is user's face transport layer address (IP address) and the descending GTP tunnel sign (TEID) that each UE EPS carries appointment respectively;

Step S714, S-GW carry out path conversion;

Step S715, S-GW return to bearing modification response to MME, and carrying S-GW is user's face transport layer address (IP address) and the up GTP tunnel sign (TEID) that each UE EPS carries appointment respectively;

Step S716, MME are to target eNB return path transition response, and carrying S-GW is user's face transport layer address (IP address) and the up GTP tunnel sign (TEID) that each UE EPS carries appointment respectively;

So far, has switched in path.After this, be dealt into the downlink data packet of UE, S-GW can send it to user's face transport layer address (IP address) of corresponding target eNB appointment according to carrying under it, and descending GTP tunnel sign (TEID) is set; The upstream data bag sending for UE, target eNB can send it to user's face transport layer address (IP address) of corresponding S-GW appointment according to carrying under it, and up GTP tunnel sign (TEID) is set.

Step S717, target eNB are to source eNB transmitting terminal context releasing request;

Step S718, source eNB are released to and switch the related resource that UE distributes.

After above-mentioned handoff procedure completes, user's face and the chain of command of UE have all been switched to target eNB.That is: at Uu mouth, UE and target eNB have been set up user's face and chain of command radio bearer: in step S706, the hand off signaling that target eNB produces is RRC message; In step S707, the hand off signaling that source eNB generates target eNB sends to UE;

UE completes after user's face and chain of command carrying switching of Uu mouth, in step S711, and notification target eNB, the empty port load-supporting of user's face and chain of command has all been switched to target eNB;

At S1-MME interface, target eNB has been set up for the S1-MME switching and has been connected with MME: by step S712 and step S716, target eNB has been set up for the S1 that switches UE and has been connected with MME;

At S1-U interface, target eNB and S-GW have set up for the S1-U carrying of switching UE: by step S712 ~ S716, eNB and S-GW have completed the path conversion of switching carrier, and data transmit path is by being converted between target eNB and MME between source eNB and MME.

As a kind of enhancing, between UE and Local eNB, also may there is broadcast.

As shown in Figure 8, the E-RAB that Macro eNB receives from core net revises message, in message, carry the E-RAB QOS information and the NAS PDU that need modification, Macro eNB carries out RB according to this information and reshuffles, organize and send RRC reconfiguration message to UE, in message, having comprised the DRB information of renewal etc.UE receives after RRC reconfiguration message, carries out reconfiguration operation, will return to RRC and reshuffle message to Macro eNB after success, and correspondingly, Macro eNB will return to E-RAB and revise response message to MME.UE will send NAS information (session management response message) to MME by direct-sending message subsequently.Between UE and network, in the carrying of upgrading, carry out the transmission of up-downgoing data.

Because Local eNB quantity is many, cover littlely, cause UE needs frequently between Macro eNB community and Local eNB community, to switch.

The frequency of switching between Macro eNB community and Local eNB community in order to reduce UE, a kind of user's face network design mode separated with chain of command is introduced into.

As shown in Figure 9, under which, when UE is in the region of only having Macro eNB community to cover, the chain of command of UE connects and is connected with user's face all at Macro eNB; When UE moves to Macro eNB community and Local eNB community when overlapping covered, all or part of user's face of UE connects (DRB) and is transferred to Local eNB, to obtain higher service transmission rate; Chain of command connects major part and still remains on Macro eNB, and to prevent that chain of command from connecting handoff failure and causing UE call drop, small part (SRB) is transferred to Local eNB, to guarantee the RRM of Local eNB.

In the situation that UE user's face is separated with chain of command, UE is connected to two eNB simultaneously.It eats dishes without rice or wine to connect as shown in figure 10:

Under user's face and chain of command separation case, Macro eNB has complete user's face and chain of command protocol stack, and the user's face between itself and UE and chain of command protocol stack are as shown in Figure 4 and Figure 5.And Local eNB has complete user face protocol stack, and part RRC protocol function, so the user face protocol stack of Local eNB is also as shown in Figure 4, and chain of command protocol stack is as shown in figure 11.Wherein " Sub rrc layer " represents only to contain the protocol stack of part RRC function, for example, only comprise radio resource management function.

But, under user's face network design mode separated with chain of command, also there is no at present can support to carry out the signaling procedure of user plane bearer switching, part chain of command carrying switching, being difficult to realize corresponding carrying switches, in addition, the bearer management process that also there is no the eNB under user's face network design mode separated with chain of command.

Summary of the invention

The embodiment of the present invention provides a kind of load bearing management method, Apparatus and system, to realize under user's face network design mode separated with chain of command, carries switching.

, comprising:

Macro base station is when the user plane bearer of determining user need to switch to small base station, to described small base station, send user plane bearer transfer request, in described user plane bearer transfer request, carry information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift;

Described macro base station and described small base station carry out the transfer of user plane bearer according to described user plane bearer transfer request.

, comprising:

Small base station receives macro base station when the user plane bearer of determining user need to switch to small base station, the user plane bearer transfer request sending to described small base station, carries information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift in described user plane bearer transfer request;

Described small base station and described macro base station carry out the transfer of user plane bearer according to described user plane bearer transfer request.

A device, comprising:

Request transmitting unit, in the time of need to switching to small base station for the user plane bearer determining user, to described small base station, send user plane bearer transfer request, in described user plane bearer transfer request, carry information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift;

Carrying buanch unit, for carrying out the transfer of user plane bearer with described small base station according to described user plane bearer transfer request.

A device, comprising:

Request reception unit, for receiving macro base station when the user plane bearer of determining user need to switch to small base station, the user plane bearer transfer request sending, carries information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift in described user plane bearer transfer request;

Buanch unit, for carrying out the transfer of user plane bearer with described macro base station according to described user plane bearer transfer request.

A system, comprising: macro base station and small base station, wherein:

Described macro base station, in the time of need to switching to small base station for the user plane bearer determining user, to described small base station, send user plane bearer transfer request, in described user plane bearer transfer request, carry information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift; According to described user plane bearer transfer request, carry out the transfer of user plane bearer with described small base station;

Described small base station, the user plane bearer transfer request sending for receiving described macro base station, carries information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift in described user plane bearer transfer request; According to described user plane bearer transfer request, carry out the transfer of user plane bearer with described macro base station.

The embodiment of the present invention provides a kind of load bearing management method, Apparatus and system, macro base station is when the user plane bearer of determining user need to switch to small base station, to small base station, send user plane bearer transfer request, and in this user plane bearer transfer request, carry information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift, and then macro base station and small base station can carry out according to this user plane bearer transfer request the transfer of certain customers' face carrying, realized under user's face network design mode separated with chain of command and carried switching.

Accompanying drawing explanation

Fig. 1 is the network architecture schematic diagram of E-UTRAN in prior art;

Fig. 2 is that user's face of the prior art connects EPS carrying schematic diagram;

Fig. 3 is chain of command connection diagram of the prior art;

Fig. 4 is user face protocol stack schematic diagram in prior art;

Fig. 5 is chain of command protocol stack schematic diagram in prior art;

Fig. 6 is hierarchical network on-premise network configuration diagram in prior art;

Fig. 7 is user's switching flow figure of the prior art;

Fig. 8 is business modification flow chart of the prior art;

Fig. 9 is user's face of the prior art network architecture schematic diagram separated with chain of command;

Figure 10 is the connection diagram of eating dishes without rice or wine between UE and base station in prior art;

Figure 11 is the middle-size and small-size base station of prior art chain of command protocol stack schematic diagram;

One of load bearing management method flow chart that Figure 12 provides for the embodiment of the present invention;

The carrying transfer method flow chart of the corresponding embodiment mono-that Figure 13 provides for the embodiment of the present invention;

Two of the load bearing management method flow chart that Figure 14 provides for the embodiment of the present invention;

The business modification method flow diagram of the corresponding embodiment bis-that Figure 15 provides for the embodiment of the present invention;

Three of the load bearing management method flow chart that Figure 16 provides for the embodiment of the present invention;

The carrying changing method flow chart of the corresponding embodiment tri-that Figure 17 provides for the embodiment of the present invention;

Four of the load bearing management method flow chart that Figure 18 provides for the embodiment of the present invention;

Five of the load bearing management method flow chart that Figure 19 provides for the embodiment of the present invention;

Six of the load bearing management method flow chart that Figure 20 provides for the embodiment of the present invention;

The bearer management apparatus structure schematic diagram that Figure 21-23 provide for the embodiment of the present invention;

The another kind of bearer management apparatus structure schematic diagram of Figure 24-26 for providing for the embodiment of the present invention;

The bearer management system configuration schematic diagram that Figure 27 provides for the embodiment of the present invention.

Embodiment

The technical scheme embodiment of the present invention being provided below in conjunction with specific embodiment is described in detail:

Embodiment mono-,

As shown in figure 12, the load bearing management method that the embodiment of the present invention provides comprises:

Step S1201, macro base station are when the user plane bearer of determining user need to switch to small base station, to small base station, send user plane bearer transfer request, in user plane bearer transfer request, carry information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift;

Step S1202, small base station and macro base station carry out the transfer of user plane bearer according to user plane bearer transfer request.

Conventionally, when determining that user enters macro base station and the common region covering of small base station, macro base station can determine that user's user plane bearer need to switch to small base station.

In step S1202, small base station and macro base station carry out the transfer of user plane bearer according to user plane bearer transfer request, specifically comprise:

Macro base station receives small base station after receiving user plane bearer transfer request, the user plane bearer transfer request response sending to macro base station;

Macro base station, according to the response of user plane bearer transfer request, carries out separation by the bearing function on SRB, according to the bearing function after separation, generates user's face and shifts signaling and send to user;

Macro base station, after definite user is carried and shifted successfully, carries out path conversion and resource release.

Wherein, the response of user plane bearer transfer request comprises:

Allow the information of the user plane bearer of receiving, comprise the ID of carrying, the up forward carrying GTP tunnel TEID that carrying is corresponding, descending forward carrying GTP tunnel TEID, carries corresponding descending GTP tunnel TEID, the descending GTP tunnel transport layer address that carrying is corresponding;

The information of the user plane bearer excluding, comprises the ID of carrying;

User, at the bottom configuration information of small base station community, comprises PDCP, RLC, MAC, PHY configuration;

And small base station cell information.

Wherein, small base station cell information specifically comprises:

The configuration information of small base station community, for example RACH configuration;

Small base station community is the scheduling identification of user assignment, for example C-RNTI;

And the small base station community SRB resource information that is user assignment.

Macro base station sends to user's face transfer signaling of user to comprise:

User is at the configuration information of small base station community, MAC for example, PHY configuration;

User is at the configuration information of macro base station community, MAC for example, PHY configuration;

The data surface beared information that need to shift, RDB ID for example, LCID etc.;

The data surface beared information that need to discharge, for example RDB ID;

And the SRB configuration information that need to set up.

The user's face that receives macro base station transmission user shifts after signaling, user shifts the parameter in signaling according to user's face, complete the parameter configuration to user plane bearer and SRB, concrete, user receives after the transfer command of user's face, according to the configuration information in small base station community, generate MAC and the PHY entity corresponding with small base station, and user plane bearer and the newly-built SRB that need to carry out the transfer of user's face are multiplexed on this MAC and PHY entity;

User maintains with the RRC of macro base station and is connected, and accesses small base station;

When macro base station is transferred to small base station by certain customers' face carrying, user carries out the transmission of user's face simultaneously on macro base station and small base station, and retain SRB1 between user and macro base station, the transmission of SRB2, between user and small base station, also carry out the transmission of SRB, when macro base station is transferred to small base station by whole user plane bearer, user carries out the transmission of user's face simultaneously on small base station, and retain SRB1 between user and macro base station, the transmission of SRB2, between user and small base station, also carry out the transmission of SRB, wherein, carrying user mobility management related signaling in macro base station and user's SRB transmission, and in small base station and user's SRB transmission, only carry the relevant RRM signaling of user's face of transmitting on small base station.

Now, user's completing user face shifts, and returns to user's face shift success message to macro base station, and macro base station can be determined accordingly that user is carried and shift successfully.

When carrying out path conversion and resource release, can first by macro base station, to the conversion of MME transmit path, be asked; Macro base station is received in S-GW and completes after the conversion of path, the path conversion request response that MME returns; Macro base station is to small base station transmit path conversion request response; Small base station, according to path conversion request response, discharge corresponding carrying, and the more up GTP tunnel of new bearer identifies and transport layer address; Small base station notice macro base station discharges the user plane bearer resource having shifted; Macro base station discharges the user plane bearer resource having shifted.

Now, the transfer of all or part of user plane bearer that has completed user from macro base station to small base station.

Below in conjunction with Figure 13, user's user plane bearer transfer flow is described in detail, this flow process comprises:

Step S1301, macro base station are measured configuration to UE, and UE carries out and measures according to the measurement configuration information of receiving;

Step S1302, at macro base station, be on the ascending resource that distributes of UE, UE reporting measurement result, this measurement result will be carried out switch decision for auxiliary macro base station;

Step S1303, macro base station are measured judgement.If macro base station determines to switch, continue to carry out subsequent step;

Step S1304, macro base station send user plane bearer transfer request to small base station, in this user plane bearer transfer request message, carry information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift, wherein, it can be the information that certain customers' face carrying is shifted that macro base station sends to small base station, can be also the information that shifts the whole E-RAB carrying of UE;

Step S1305, small base station, with reference to this user plane bearer transfer request, carry out acceptance judging according to the QoS information of carrying to be accepted.If small base station allows to receive this UE, carry out bottom configuration, be the relevant Radio Resource of this UE preparation its SRB of access and DRB, to prepare switching;

Step S1306, small base station return to user plane bearer transfer request response message to macro base station, during this is small-sized, carry: the information that allows the user plane bearer of receiving, the ID that comprises carrying, the up forward carrying GTP tunnel TEID that carrying is corresponding, descending forward carrying GTP tunnel TEID, the descending GTP tunnel TEID that carrying is corresponding, the descending GTP tunnel transport layer address that carrying is corresponding; The information of the user plane bearer excluding, comprises the ID of carrying; User, at the bottom configuration information of small base station community, comprises PDCP, RLC, MAC, PHY configuration; The configuration information of small base station community, for example RACH configuration; Small base station community is the scheduling identification of user assignment, for example C-RNTI; And the small base station community SRB resource information that is user assignment.

Step S1307, macro base station carry out separation by the function of institute's carrier signaling on SRB, preparation being transferred to the relevant functions such as RRM of DRB of small-sized eNB transfers on small-sized eNB, itself retains the RRM of remaining DRB and the functions such as mobile management of this UE, then generate user's face and shift signaling, send to UE, in this message, carry: the configuration information of small base station community, for example RACH configuration; Small base station community is the scheduling identification of user assignment, for example C-RNTI; User is at the configuration information of small base station community, MAC for example, PHY configuration; User is at the configuration information of macro base station community, MAC for example, PHY configuration; The data surface beared information that need to shift, RDB ID for example, LCID etc.; The data surface beared information that need to discharge, for example RDB ID; And the SRB configuration information that need to set up.

The serial-number-state information (as: sequence number of the downlink data packet of unsuccessful transmission, first sequence number that small base station can distribute etc.) that step S1308, macro base station send current data sends to small base station; The sequence number that sends this serial-number-state information and be the data of receiving and dispatching for assurance source and small base station is continuous, avoids packet loss or repeat occurring;

After step S1308, macro base station can by own from core net, receive but not yet successfully send to the downlink data packet of UE to send to small base station so that small base station is transferred to UE; Similarly, macro base station can from the discontinuous UE upstream data of the sequence number bag of eating dishes without rice or wine to receive, (error of transmission of eating dishes without rice or wine may cause the bag sending UE successfully to receive early than the coated Macro eNB first sending by own, cause the Macro eNB packet receiving sequence number discontinuous) send to small base station, so that small base station is after receiving the packet lacking that UE retransmits, by the continuous Packet Generation of sequence number to core net.

Step S1309, UE send lead code (Preamble) to small base station, to set up the uplink synchronous with small base station;

Step S1310, small base station return to response message, carry the ascending resource (for subsequent transmission) and the UE Timing Advance (for adjusting the up delivery time of UE, setting up uplink synchronous) that for UE, distribute;

UE is after receiving user's face transfer signaling, user shifts the parameter in signaling according to user's face, complete the parameter configuration to user plane bearer and SRB, concrete, user receives after the transfer command of user's face, according to the configuration information in small base station community, generate MAC and the PHY entity corresponding with small base station, and user plane bearer and the newly-built SRB that need to carry out the transfer of user's face are multiplexed on this MAC and PHY entity; If user shifts whole user plane bearer, all DRB and newly-built SRB are multiplexed on this cover MAC and PHY entity, and the transmission for SRB1 and SRB2 of the MAC that macro base station is used and PHY entity.

Step S1311, UE return to user's face to small base station and shift success message;

Step S1312, macro base station are initiated path conversion request to MME, in this path conversion request, carry the beared information that need to carry out path conversion: the ID that comprises carrying, the descending GTP tunnel TEID that carrying is corresponding, the transport layer address of carrying corresponding GTP tunnel (Local eNB).Macro eNB can obtain these information from step S1306.

The request of step S1313, MME request S-GW bearing modification;

Step S1314, S-GW carry out path conversion;

Step S1315, S-GW return to bearing modification response to MME, and carrying S-GW is user's face transport layer address (IP address) and the up GTP tunnel sign (TEID) that each UE EPS carries appointment respectively;

Step S1316, MME, to macro base station return path conversion request response, carry: the beared information that need to carry out path conversion: comprise the ID of carrying, the up GTP tunnel TEID that carrying is corresponding, the transport layer address of carrying corresponding GTP tunnel (S-GW); Need the beared information discharging: the ID that comprises carrying.

Step S1317, macro base station forward the path conversion request response of receiving to small base station, small base station discharges corresponding carrying, more up GTP tunnel TEID and the transport layer address of new bearer according to this path conversion request response;

Step S1318, small base station notice macro base station discharge the user plane bearer resource having shifted; Now, the user plane data transfer of UE part has forwarded Local eNB to, and therefore, Macro eNB can discharge the resource of relevant DRB, if whole user plane bearer of user are all transferred, notifies macro base station to discharge whole user's face resources;

Step S1319, macro base station discharge the user's face resource having shifted.

Embodiment bis-,

When small base station is born all or part of user's user plane bearer, if core net need to be carried out business modification, for example, carry out E-RAB carrying and add, revise or delete, as shown in figure 14, carry out in accordance with the following steps:

Step S1401, macro base station receive the message of adding, revising or delete for carrying out E-RAB carrying from core net;

Step S1402, macro base station send carrying to small base station and add request message, bearing modification request message or deleting load-bearing request message, make small base station add request message, bearing modification request message or deleting load-bearing request message according to this carrying and carry out user plane bearer renewal.

Wherein, small base station adds request message, bearing modification request message or deleting load-bearing request message according to this carrying and carries out user plane bearer renewal, specifically comprises:

Small base station adds request message, bearing modification request message or deleting load-bearing request message according to carrying, upgrades the relevant parameter of the user plane bearer of each this small base station;

Small base station sends RRC to relative users and connects reconfiguration message, and receives user and upgrade the RRC returning after the configuration of user's face and reshuffled message.

When macro base station receive from core net for carrying out the message of E-RAB deleting load-bearing, when deleting the message of the last item E-RAB carrying on macro base station, macro base station sends deleting load-bearing request message to small base station, make small base station carry out user plane bearer renewal according to this deleting load-bearing request message, specifically comprise:

Macro base station sends deleting load-bearing request message to small base station, makes small base station according to all carryings of this deletion request message releasing user, and the RRC of macro base station releasing user connects.

When macro base station receive from core net for carrying out the message of E-RAB deleting load-bearing, for deleting the message of the last item E-RAB carrying on small base station, and on macro base station, safeguard while having other E-RAB carrying, macro base station sends deleting load-bearing request message to small base station, make small base station carry out user plane bearer renewal according to this deleting load-bearing request message, specifically comprise:

Macro base station sends deleting load-bearing request message to small base station, makes small base station according to all carryings of this deleting load-bearing request message releasing user.

If it is the last item E-RAB that MME receives what delete in the deleting load-bearing message from S-GW, Macro eNB will notice Local eNB discharges all carryings of UE, and the RRC that Macro eNB discharges UE simultaneously connects.

If Macro eNB receives and deletes what delete in message from the E-RAB of core net is the last item E-RAB on Local eNB, and other E-RAB on Macro eNB, have also been maintained, Macro eNB will only notify Local eNB, discharge UE at the UE of Local eNB context.

Below in conjunction with Figure 15, user's face business modification flow process of user is described in detail, this flow process comprises:

Step S1501, MME receive the E-RAB carrying interpolation of gateway transmission, the message of revising or deleting;

Step S1502, Macro eNB receive the E-RAB carrying interpolation of MME transmission, the message of revising or deleting;

Step S1503, Macro eNB send carrying interpolation/modification/deletion request message to Local eNB, include the information such as QOS of renewal in this message; Receive after this message, Local eNB is that each is in the parameters such as the corresponding RLC/MAC/PHY of DRB bearer update of Local eNB work according to relevant information;

Step S1504, Local eNB send RRC and connect reconfiguration message to UE, and DRB is carried out to reprovision (add/revise/delete);

Step S1505, receive after this message, UE upgrades corresponding DRB configuration (add/revise/delete), returns to RRC and has reshuffled message to Local eNB;

Step S1506, Local eNB return to carrying to Macro eNB to be added/revises/delete response message, and notice Macro eNB has completed corresponding operating.

Step and Fig. 8 are subsequently similar:

Step S1507, Macro eNB return to E-RAB and revise response message to MME;

Step S1508, UE sends direct-sending message to Local eNB subsequently;

Step S1509, Macro eNB send NAS information (session management response message) to MME;

Step S1510, MME send E-RAB carrying to gateway to be added, revises or deletion response.

After this flow process, between UE and network, can in the carrying of upgrading, carry out the transmission of up-downgoing data.

Embodiment tri-,

When user leaves macro base station and the common region covering of small base station, conventionally user's user plane bearer need to be switched back macro base station from small base station, now, as shown in figure 16, the load bearing management method that the embodiment of the present invention provides also comprises the steps, to realize, user's user plane bearer need to be switched back to macro base station from small base station:

When step S1601, macro base station need to switch back self from small base station in the user plane bearer of determining user, the user plane bearer of receiving user;

Step S1602, macro base station notice small base station stop user plane data transfer and delete SRB;

Step S1603, macro base station send user's face hand off signaling to user, and receive user and carry out the user's face handoff completion message returning after the switching of user's face;

Step S1604, macro base station carry out path conversion and indicate small base station to carry out resource release.

Continuous in order to guarantee the sequence number of the data that macro base station and small base station are received and dispatched, macro base station notice small base station stops user plane data transfer and deletes after SRB, also comprises:

Macro base station receives the current data transmission sequence number state information that small base station sends;

Macro base station receives the downlink data that not yet successfully sends to user that small base station sends, and the upstream data that not yet sends to gateway.

Above-mentioned steps can be carried out before step S1603, also can carrying out after user sends user's face hand off signaling in step S1403.

Wherein, user's face hand off signaling comprises:

User is at the configuration information of macro base station community, MAC for example, PHY configuration, UE Macro eNB community MAC and PHY configuration may change because user's face switches;

Need to carry out the beared information of user's face switching, DRB ID for example, LCID etc.;

Need the user plane bearer information discharging, for example DRB ID;

And the indication of the SRB between deletion and small base station.

User is after receiving this user's face hand off signaling, and user carries out the switching of user's face, concrete, according to user's face hand off signaling of receiving, deletes MAC and the PHY entity corresponding with small base station; On the MAC corresponding with macro base station and PHY entity, according to user's face hand off signaling, be configured; The user plane bearer that needs are switched is multiplexed on the MAC corresponding with macro base station and PHY entity.

In step S1604, macro base station carries out path conversion, specifically comprises:

Macro base station is to MME transmit path conversion request;

Be received in S-GW and complete after the conversion of path, the path conversion request response that MME returns;

Macro base station upgrades up GTP tunnel sign and the transport layer address of user's face transport layer address, carrying according to path conversion request response.

Macro base station indication small base station carries out resource release, specifically comprises:

Macro base station sends user's context releasing request to small base station;

Small base station is released to the user plane bearer of carrying out user and switches the resource distribute.

The flow process that user's user plane bearer is switched to macro base station by small base station below in conjunction with Figure 17 is described in detail, before this, UE keeps being connected with Macro eNB and Local eNB simultaneously, its chain of command connects (SRB1 and SRB2) and is positioned at Macro eNB, all or part of user plane bearer and SRB(bearing part signaling capability) be positioned at Local eNB, as shown in figure 17, this user plane bearer switching flow comprises:

Step S1701, Macro eNB measure configuration to UE, and the measurement configuration information that the follow-up basis of UE is received is carried out and measured;

Step S1702, at Macro eNB, be on the ascending resource that distributes of UE, UE reporting measurement result.This measurement result will be carried out switch decision for auxiliary Macro eNB;

Step S1703, Macro eNB carry out switch decision.If Macro eNB determines to carry out the switching of user's face, continue to carry out subsequent step;

The target eNB that step S1704, Macro eNB switch as user's face, receives the user plane bearer of UE;

Step S1705, receive successfully after, Macro eNB notice Local eNB ends user plane data transfer and also deletes SRB;

The serial-number-state information (as: sequence number of the downlink data packet of unsuccessful transmission, first sequence number that target eNB can be distributed etc.) that step S1706, Local eNB send current data transmission to Macro eNB sends to Macro eNB; It is continuous in order to guarantee the sequence number of the data that Macro and Local eNB receive and dispatch transmitting this serial-number-state information, avoids packet loss event or repeated events to occur;

After completing steps S1706, Local eNB not yet successfully sends to the downlink data Buddhist monk no delivery attempted of UE to the upstream data of Serving GW to Macro eNB forward.Data forwarding process in this process and LTE is similar.

Step S1707, Macro eNB generate user's face hand off signaling, send to UE, in this message, carry: UE is at the configuration information of Macro eNB community: MAC, PHY configuration, UE Macro eNB community MAC and PHY configuration may change because user's face switches; Need to carry out the beared information of data surface switching, as DRB ID, LCID etc.; The information that needs the data surface carrying of release, as DRB ID; The indication of SRB between notice UE deletion and local eNB.

Step S1708, UE, according to receiving user's face hand off signaling, delete MAC and the PHY entity corresponding with Local eNB, on the MAC corresponding with Macro eNB and PHY entity, enable the configuration of newly receiving; And the load multiplexing that needs are switched is on the MAC and PHY entity corresponding with Macro eNB; Delete the carrying that needs release.And return to user's face handoff completion message to network.Now all chains of command connections of eating dishes without rice or wine of UE are connected and all transfer to Macro eNB with user's face.

Step S1709, Macro eNB initiate path handover request to MME, and carrying target eNB is user's face transport layer address (IP address) and the descending GTP tunnel sign (TEID) that each UE EPS carries appointment respectively;

The request of step S1710, MME request S-GW bearing modification, carrying Macro eNB is user's face transport layer address (IP address) and the descending GTP tunnel sign (TEID) that each UE EPS carries appointment respectively;

Step S1711, S-GW carry out path conversion;

Step S1712, S-GW return to bearing modification response to MME, and carrying S-GW is user's face transport layer address (IP address) and the up GTP tunnel sign (TEID) that each UE EPS carries appointment respectively;

Step S1713, MME be to Macro eNB return path handoff response, carries S-GW and carry user's face transport layer address (IP address) and the up GTP tunnel sign (TEID) of appointment respectively for each UEEPS;

So far, has switched in path.After this, be dealt into the downlink data packet of UE, S-GW can send it to user's face transport layer address (IP address) of corresponding Macro NB appointment according to carrying under it, and descending GTP tunnel sign (TEID) is set; The upstream data bag sending for UE, Macro eNB can send it to user's face transport layer address (IP address) of corresponding S-GW appointment according to carrying under it, and up GTP tunnel sign (TEID) is set.

Step S1714, Macro eNB send UE context releasing request to Local eNB;

Step S1715, Local eNB are released to and switch the related resource that UE distributes.

After above-mentioned handoff procedure completes, user's face and the chain of command of UE have all been switched to Macro eNB.

In said process, before step S1707 can occur in step S1705 and S1706.

The embodiment of the present invention also provides a kind of load bearing management method of small base station side, as shown in figure 18, comprising:

Step S1801, small base station receive macro base station when the user plane bearer of determining user need to switch to small base station, the user plane bearer transfer request sending to small base station, carries information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift in user plane bearer transfer request;

Step S1802, small base station and macro base station carry out the transfer of user plane bearer according to user plane bearer transfer request.

Wherein, in step S1802, small base station and macro base station carry out the transfer of user plane bearer according to user plane bearer transfer request, specifically comprise:

Small base station, after receiving user plane bearer transfer request, sends the response of user plane bearer transfer request to macro base station; Make macro base station according to the response of user plane bearer transfer request, the bearing function on SRB is carried out to separation, according to the bearing function after separation, generate user's face and shift signaling and send to user; And make macro base station after definite user is carried and shifted successfully, carry out path conversion and resource release.

Wherein, the response of user plane bearer transfer request comprises:

The information of the information of the user plane bearer of allow receiving, the user plane bearer excluding, user are at bottom configuration information and the small base station cell information of small base station community.

In step S1802, carry out path conversion and resource and discharge, specifically comprise:

Small base station receives macro base station and to MME transmit path, changes the path conversion request response that receives and forward after request;

Small base station, according to path conversion request response, discharge corresponding carrying, and the more up GTP tunnel of new bearer identifies and transport layer address;

Small base station notice macro base station discharges the user plane bearer resource having shifted.

Corresponding to embodiment bis-, when small base station is born all or part of user's user plane bearer, if core net need to be carried out business modification, for example, carry out E-RAB carrying and add, revise or delete, as shown in figure 19, this load bearing management method also comprises:

Step S1901, small base station receive macro base station receive from core net for carrying out after message that E-RAB carrying adds, revises or delete, request message, bearing modification request message or deleting load-bearing request message are added in the carrying of transmission;

Step S1902, small base station add request message, bearing modification request message or deleting load-bearing request message according to this carrying and carry out user plane bearer renewal.

Wherein, in step S1902, small base station adds request message, bearing modification request message or deleting load-bearing request message according to this carrying and carries out user plane bearer renewal, specifically comprises:

When macro base station receives the message of adding, revising or delete for carrying out E-RAB carrying from core net, when deleting the message of the last item E-RAB carrying on macro base station, also comprise: the RRC of macro base station releasing user connects;

Now, small base station carries out user plane bearer renewal according to this deleting load-bearing request message, specifically comprises:

Small base station is according to all carryings of this deleting load-bearing request message releasing user.

When macro base station receives the message of adding, revising or delete for carrying out E-RAB carrying from core net, for deleting the message of the last item E-RAB carrying on small base station, and on macro base station, safeguard while having other E-RAB carrying, small base station carries out user plane bearer renewal according to this deleting load-bearing request message, specifically comprises:

Corresponding to embodiment tri-, when user leaves macro base station and the common region covering of small base station, user's user plane bearer need to be switched back macro base station from small base station conventionally, and now, as shown in figure 20, this load bearing management method also comprises:

Step S2001, small base station receive macro base station and need to from small base station, switch back the user plane bearer of self also receiving user in the user plane bearer of determining user, the termination user plane data transfer of transmission the message of deleting SRB;

Step S2002, small base station stop user plane data transfer and delete SRB;

Step S2003, small base station switch and the rear resource release indication sending of path conversion at user's face according to macro base station, carry out resource release.

Wherein, at step S2002 small base station, stop user plane data transfer and delete after SRB, also comprising:

Small base station sends current data transmission sequence number state information to macro base station;

Small base station is to the macro base station downlink data that sends to user not yet sent successfully, and the upstream data that not yet sends to gateway.

In step S2003, the resource that small base station sends according to macro base station discharges indication, carries out resource release, specifically comprises:

Small base station receives the user's context releasing request that macro base station sends;

The embodiment of the present invention is also corresponding provides a kind of bearer management device, and this device can be specially macro base station, as shown in figure 21, comprising:

Request transmitting unit 2101, in the time of need to switching to small base station for the user plane bearer determining user, to small base station, send user plane bearer transfer request, in user plane bearer transfer request, carry information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift;

Carrying buanch unit 2102, for carrying out the transfer of user plane bearer according to user plane bearer transfer request with small base station.

Wherein, carrying buanch unit 2102 specifically for:

Receive small base station after receiving user plane bearer transfer request, the response of the user plane bearer transfer request of transmission;

According to the response of user plane bearer transfer request, the bearing function on SRB is carried out to separation, according to the bearing function after separation, generate user's face and shift signaling and send to user;

After definite user is carried and shifted successfully, carry out path conversion and resource release.

Carrying buanch unit 2102 carries out path conversion and resource discharges, and specifically comprises:

To MME transmit path conversion request;

To the conversion of small base station transmit path, ask response, make small base station according to path conversion request response, discharge corresponding carrying, and the more up GTP tunnel of new bearer identifies and transport layer address;

Receive the notification message that small base station discharges the user plane bearer resource having shifted;

Discharge the user plane bearer resource having shifted.

Corresponding to embodiment bis-, as shown in figure 22, this device also comprises:

Business modification unit 2103, for receiving the message of adding, revising or delete for carrying out E-RAB carrying from core net; To small base station, send carrying and add request message, bearing modification request message or deleting load-bearing request message, make small base station add request message, bearing modification request message or deleting load-bearing request message according to this carrying and carry out user plane bearer renewal.

Corresponding to embodiment tri-, as shown in figure 23, this device also comprises:

Carrying switch unit 2104, for when the user plane bearer of determining user need to be switched back self from small base station, the user plane bearer of receiving user; Notice small base station stops user plane data transfer and deletes SRB; To user, send user's face hand off signaling, and receive user and carry out the user's face handoff completion message returning after the switching of user's face; Carry out path conversion and indicate small base station to carry out resource release.

Carrying switch unit 2104 notice small base stations stop user plane data transfer and delete after SRB, also comprise:

Receive the current data transmission sequence number state information that small base station sends;

Receive the downlink data that not yet successfully sends to user that small base station sends, and the upstream data that not yet sends to gateway.

Carrying switch unit 2104 carries out path conversion, specifically comprises:

To MME transmit path conversion request;

According to path conversion request response, upgrade up GTP tunnel sign and the transport layer address of user's face transport layer address, carrying.

Carrying switch unit 2104 indication small base stations carry out resource release, specifically comprise:

To small base station, send user's context releasing request, small base station is released to carry out user's user plane bearer to switch the resource of distributing.

The embodiment of the present invention also provides a kind of bearer management device, and this device can be specially small base station, and as shown in figure 24, this device comprises:

Request reception unit 2401, for receiving macro base station when the user plane bearer of determining user need to switch to small base station, the user plane bearer transfer request sending, carries information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift in user plane bearer transfer request;

Buanch unit 2402, for carrying out the transfer of user plane bearer according to user plane bearer transfer request with macro base station.

Wherein, buanch unit 2402 specifically for:

After receiving user plane bearer transfer request, to macro base station, send the response of user plane bearer transfer request; Make macro base station according to the response of user plane bearer transfer request, the bearing function on SRB is carried out to separation, according to the bearing function after separation, generate user's face and shift signaling and send to user; And make macro base station after definite user is carried and shifted successfully, carry out path conversion and resource release.

Buanch unit 2402 carries out path conversion and resource discharges, and specifically comprises:

Receive macro base station and to MME transmit path, change the path conversion request response that receives and forward after request;

According to path conversion request response, discharge corresponding carrying, and the more up GTP tunnel of new bearer identifies and transport layer address;

Notice macro base station discharges the user plane bearer resource having shifted.

Corresponding to embodiment bis-, as shown in figure 25, this device also comprises:

Business change unit 2403, for receive macro base station receive from core net for after the message of carrying out E-RAB carrying and adding, revising or deleting, request message, bearing modification request message or deleting load-bearing request message are added in the carrying of transmission; According to this carrying, add request message, bearing modification request message or deleting load-bearing request message and carry out user plane bearer renewal.

Business change unit 2403 adds request message, bearing modification request message or deleting load-bearing request message according to this carrying and carries out user plane bearer renewal, specifically comprises:

According to carrying, add request message, bearing modification request message or deleting load-bearing request message, upgrade the relevant parameter of the user plane bearer of each this small base station;

To relative users, send RRC and connect reconfiguration message, and receive user and upgrade the RRC returning after the configuration of user's face and reshuffled message.

Corresponding to embodiment tri-, as shown in figure 26, this device also comprises:

Switch unit 2404, need to switch back the user plane bearer of self also receiving user the termination user plane data transfer of transmission the message of deleting SRB from small base station in the user plane bearer of determining user for receiving macro base station; Stop user plane data transfer and delete SRB; According to macro base station, at user's face, switch and the rear resource release indication sending of path conversion, carry out resource release.

Switch unit 2404 stops user plane data transfer and also deletes after SRB, also for:

To macro base station, send current data transmission sequence number state information;

To the macro base station downlink data that sends to user not yet sent successfully, and the upstream data that not yet sends to gateway.

The resource that switch unit 2404 sends according to macro base station discharges indication, carries out resource release, specifically comprises:

Receive the user's context releasing request that macro base station sends;

Be released to the user plane bearer of carrying out user and switch the resource distribute.

The embodiment of the present invention is also corresponding provides a kind of bearer management system, as shown in figure 27, comprising: macro base station 2701 and small base station 2702, wherein:

Macro base station 2701, in the time of need to switching to small base station for the user plane bearer determining user, to small base station, send user plane bearer transfer request, in user plane bearer transfer request, carry information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift; According to user plane bearer transfer request, carry out the transfer of user plane bearer with small base station;

Small base station 2702, the user plane bearer transfer request sending for receiving macro base station, carries information and the bottom configuration information of this user in macro base station of the user plane bearer that this user need to shift in user plane bearer transfer request; According to user plane bearer transfer request, carry out the transfer of user plane bearer with macro base station.

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.

The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.

Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims

1. a load bearing management method, is characterized in that, comprising:

2. the method for claim 1, is characterized in that, described macro base station and described small base station carry out the transfer of user plane bearer according to described user plane bearer transfer request, specifically comprise:

Described macro base station receives described small base station after receiving described user plane bearer transfer request, the user plane bearer transfer request response sending to described macro base station;

Described macro base station responds according to described user plane bearer transfer request, and the bearing function on Signaling Radio Bearer SRB is carried out to separation, according to the bearing function after separation, generates user's face and shifts signaling and send to described user;

Macro base station, after definite described user is carried and shifted successfully, carries out path conversion and resource release.

3. method as claimed in claim 2, is characterized in that, described user plane bearer transfer request response comprises:

The information of the information of the user plane bearer of allow receiving, the user plane bearer excluding, described user are at bottom configuration information and the small base station cell information of small base station community.

4. method as claimed in claim 3, is characterized in that, described small base station cell information specifically comprises:

The SRB resource information that the scheduling identification that the configuration information of small base station community, small base station community are described user assignment and small base station community are described user assignment.

5. method as claimed in claim 2, is characterized in that, described user's face shifts signaling and comprises:

The SRB configuration information that the scheduling identification that the configuration information of small base station community, small base station community are described user assignment, described user set up at the configuration information of described macro base station community, the data surface beared information that need to shift, the data surface beared information that need to discharge and needs the configuration information of described small base station community, described user.

6. method as claimed in claim 2, is characterized in that, described macro base station is determined that described user is carried and shifted successfully, specifically comprises:

Receive user's face transfer success message that described user returns.

7. method as claimed in claim 6, is characterized in that, described user returns to user's face and shifts before success message, also comprises:

Described user shifts the parameter in signaling according to described user's face, completes the parameter configuration to user plane bearer and SRB;

Described user maintains with the RRC of macro base station and is connected, and accesses small base station;

When described macro base station is transferred to small base station by certain customers' face carrying, described user carries out the transmission of user's face simultaneously on macro base station and small base station, and retain SRB1 between user and macro base station, the transmission of the second Signaling Radio Bearer SRB2, between user and small base station, also carry out the transmission of SRB, when described macro base station is transferred to small base station by whole user plane bearer, described user carries out the transmission of user's face simultaneously on small base station, and between user and macro base station, retain the first Signaling Radio Bearer SRB1, the transmission of the second Signaling Radio Bearer SRB2, between user and small base station, also carry out the transmission of SRB, wherein, carrying user mobility management related signaling in macro base station and described user's SRB transmission, and in small base station and described user's SRB transmission, only carry the relevant RRM signaling of user's face of transmitting on small base station.

8. method as claimed in claim 7, is characterized in that, described user shifts the parameter in signaling according to described user's face, completes the parameter configuration to user plane bearer and SRB, specifically comprises:

Described user receives after the transfer command of user's face, according to the configuration information in small base station community, generate media corresponding with small base station and get involved key-course MAC and physical layer PHY entity, and user plane bearer and the newly-built SRB that need to carry out the transfer of user's face are multiplexed on this MAC and PHY entity.

9. method as claimed in claim 2, is characterized in that, described in carry out path conversion and resource release, specifically comprise:

Described macro base station is to Mobility Management Entity MME transmit path conversion request;

Be received in gateway S-GW and complete after the conversion of path, the path conversion request response that described MME returns;

Described macro base station sends the conversion request response of described path to described small base station;

Described small base station, according to the conversion request response of described path, discharge corresponding carrying, and the more up general packet wireless service tunnel protocol GTP tunnel of new bearer identifies and transport layer address;

Described small base station notifies described macro base station to discharge the user plane bearer resource having shifted;

Described macro base station discharges the user plane bearer resource having shifted.

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

Described macro base station receives the message of adding, revising or delete for carrying out evolution RAB E-RAB carrying from core net;

Described macro base station sends carrying to described small base station and adds request message, bearing modification request message or deleting load-bearing request message, makes described small base station add request message, bearing modification request message or deleting load-bearing request message according to this carrying and carries out user plane bearer renewal.

11. methods as claimed in claim 10, is characterized in that, described small base station adds request message, bearing modification request message or deleting load-bearing request message according to this carrying and carries out user plane bearer renewal, specifically comprises:

Described small base station adds request message, bearing modification request message or deleting load-bearing request message according to described carrying, upgrades the relevant parameter of the user plane bearer of each this small base station;

Described small base station sends radio resource control RRC connection reconfiguration message to relative users, and receives described user and upgrade the RRC returning after the configuration of user's face and reshuffled message.

12. methods as claimed in claim 10, it is characterized in that, when described macro base station receive from core net for carrying out the message of E-RAB deleting load-bearing, when deleting the message of the last item E-RAB carrying on macro base station, described macro base station sends deleting load-bearing request message to described small base station, make described small base station carry out user plane bearer renewal according to this deleting load-bearing request message, specifically comprise:

Described macro base station sends deleting load-bearing request message to described small base station, makes described small base station according to this deleting load-bearing request message, discharge all carryings of described user, and the RRC that described macro base station discharges described user connects.

13. methods as claimed in claim 10, it is characterized in that, when described macro base station receive from core net for carrying out E-RAB deleting load-bearing message, for deleting the message of the last item E-RAB carrying on small base station, and on described macro base station, safeguard while having other E-RAB carrying, described macro base station sends deleting load-bearing request message to described small base station, makes described small base station carry out user plane bearer renewal according to this deleting load-bearing request message, specifically comprises:

Described macro base station sends deleting load-bearing request message to described small base station, makes described small base station according to this deleting load-bearing request message, discharge all carryings of described user.

14. the method for claim 1, is characterized in that, also comprise:

When macro base station need to switch back self from described small base station in the user plane bearer of determining user, the user plane bearer of receiving user;

Macro base station notice small base station stops user plane data transfer and deletes SRB;

Macro base station sends user's face hand off signaling to user, and receives described user and carry out the user's face handoff completion message returning after the switching of user's face;

Macro base station carries out path conversion and indicates described small base station to carry out resource release.

15. methods as claimed in claim 14, is characterized in that, described macro base station notice small base station stops user plane data transfer and deletes after SRB, also comprises:

Described macro base station receives the current data transmission sequence number state information that described small base station sends;

Described macro base station receives the downlink data that not yet successfully sends to user that described small base station sends, and the upstream data that not yet sends to gateway.

16. methods as claimed in claim 14, is characterized in that, described user's face hand off signaling comprises:

User is in the configuration information of macro base station community, the beared information that need to carry out the switching of user's face, the user plane bearer information that needs release and the indication of the SRB between deletion and small base station.

17. methods as claimed in claim 14, is characterized in that, described user carries out the switching of user's face, specifically comprises:

According to user's face hand off signaling of receiving, delete MAC and the PHY entity corresponding with small base station;

On the MAC corresponding with macro base station and PHY entity, according to user's face hand off signaling, be configured;

The user plane bearer that needs are switched is multiplexed on described corresponding with macro base station MAC and PHY entity.

18. methods as claimed in claim 14, is characterized in that, described macro base station carries out path conversion, specifically comprises:

Macro base station is to MME transmit path conversion request;

Be received in S-GW and complete after the conversion of path, the path conversion request response that described MME returns;

Described macro base station upgrades up GTP tunnel sign and the transport layer address of user's face transport layer address, carrying according to the conversion request response of described path.

19. methods as claimed in claim 14, is characterized in that, described macro base station indicates described small base station to carry out resource release, specifically comprises:

Described macro base station sends user's context releasing request to small base station;

20. 1 kinds of load bearing management methods, is characterized in that, comprising:

21. methods as claimed in claim 20, is characterized in that, described small base station and described macro base station carry out the transfer of user plane bearer according to described user plane bearer transfer request, specifically comprise:

Described small base station, after receiving described user plane bearer transfer request, sends the response of user plane bearer transfer request to described macro base station; Described macro base station is responded according to described user plane bearer transfer request, the bearing function on Signaling Radio Bearer SRB is carried out to separation, according to the bearing function after separation, generate user's face and shift signaling and send to described user; And make described macro base station after definite described user is carried and shifted successfully, carry out path conversion and resource release.

22. methods as claimed in claim 21, is characterized in that, described user plane bearer transfer request response comprises:

23. methods as claimed in claim 21, is characterized in that, described in carry out path conversion and resource release, specifically comprise:

Described small base station receives described macro base station and to Mobility Management Entity MME transmit path, changes the path conversion request response that receives and forward after request;

Described small base station notifies described macro base station to discharge the user plane bearer resource having shifted.

24. methods as claimed in claim 20, is characterized in that, also comprise:

Small base station receive described macro base station receive from core net for after the message of carrying out evolution RAB E-RAB carrying and adding, revising or deleting, request message, bearing modification request message or deleting load-bearing request message are added in the carrying of transmission;

Described small base station adds request message, bearing modification request message or deleting load-bearing request message according to this carrying and carries out user plane bearer renewal.

25. methods as claimed in claim 24, is characterized in that, described small base station adds request message, bearing modification request message or deleting load-bearing request message according to this carrying and carries out user plane bearer renewal, specifically comprises:

26. methods as claimed in claim 24, it is characterized in that, when described macro base station receive from core net for carrying out the message of E-RAB deleting load-bearing, when deleting the message of the last item E-RAB carrying on macro base station, also comprise: the RRC that described macro base station discharges described user connects;

Described small base station carries out user plane bearer renewal according to this deleting load-bearing request message, specifically comprises:

Described small base station discharges all carryings of described user according to this deleting load-bearing request message.

27. methods as claimed in claim 24, it is characterized in that, when described macro base station receive from core net for carrying out the message of E-RAB deleting load-bearing, for deleting the message of the last item E-RAB carrying on small base station, and on described macro base station, safeguard while having other E-RAB carrying, described small base station carries out user plane bearer renewal according to this deleting load-bearing request message, specifically comprises:

28. methods as claimed in claim 20, is characterized in that, also comprise:

Small base station receives macro base station need to be from described small base station switches back the user plane bearer of self also receiving user in the user plane bearer of determining user, the termination user plane data transfer of transmission the message of deleting SRB;

Small base station stops user plane data transfer and deletes SRB;

Small base station switches and the rear resource release indication sending of path conversion at user's face according to macro base station, carries out resource release.

29. methods as claimed in claim 28, is characterized in that, described small base station stops user plane data transfer and deletes after SRB, also comprises:

Described small base station sends current data transmission sequence number state information to described macro base station;

Described small base station is to the described macro base station downlink data that sends to user not yet sent successfully, and the upstream data that not yet sends to gateway.

30. methods as claimed in claim 28, is characterized in that, the resource that described small base station sends according to described macro base station discharges indication, carries out resource release, specifically comprises:

Small base station receives the user's context releasing request that described macro base station sends;

31. 1 kinds of bearer management devices, is characterized in that, comprising:

32. devices as claimed in claim 31, is characterized in that, carrying buanch unit specifically for:

Receive described small base station after receiving described user plane bearer transfer request, the response of the user plane bearer transfer request of transmission;

According to described user plane bearer transfer request response, the bearing function on Signaling Radio Bearer SRB is carried out to separation, according to the bearing function after separation, generate user's face and shift signaling and send to described user;

After definite described user is carried and shifted successfully, carry out path conversion and resource release.

33. devices as claimed in claim 32, is characterized in that, described carrying buanch unit carries out path conversion and resource discharges, and specifically comprises:

To Mobility Management Entity MME transmit path conversion request;

To described small base station, send the conversion request response of described path, make described small base station according to the conversion request response of described path, discharge corresponding carrying, and the more up general packet wireless service tunnel protocol GTP tunnel of new bearer identifies and transport layer address;

Receive the notification message that described small base station discharges the user plane bearer resource having shifted;

Discharge the user plane bearer resource having shifted.

34. devices as claimed in claim 31, is characterized in that, also comprise:

Business modification unit, for receiving the message of adding, revising or delete for carrying out evolution RAB E-RAB carrying from core net; To described small base station, send carrying and add request message, bearing modification request message or deleting load-bearing request message, make described small base station add request message, bearing modification request message or deleting load-bearing request message according to this carrying and carry out user plane bearer renewal.

35. devices as claimed in claim 31, is characterized in that, also comprise:

Carrying switch unit, for when the user plane bearer of determining user need to be switched back self from described small base station, the user plane bearer of receiving user; Notice small base station stops user plane data transfer and deletes SRB; To user, send user's face hand off signaling, and receive described user and carry out the user's face handoff completion message returning after the switching of user's face; Carry out path conversion and indicate described small base station to carry out resource release.

36. devices as claimed in claim 35, is characterized in that, described carrying switch unit notice small base station stops user plane data transfer and deletes after SRB, also comprises:

Receive the current data transmission sequence number state information that described small base station sends;

Receive the downlink data that not yet successfully sends to user that described small base station sends, and the upstream data that not yet sends to gateway.

37. devices as claimed in claim 35, is characterized in that, described carrying switch unit carries out path conversion, specifically comprises:

To MME transmit path conversion request;

According to the conversion request response of described path, upgrade up GTP tunnel sign and the transport layer address of user's face transport layer address, carrying.

38. devices as claimed in claim 35, is characterized in that, described carrying switch unit indicates described small base station to carry out resource release, specifically comprises:

39. 1 kinds of bearer management devices, is characterized in that, comprising:

40. devices as claimed in claim 39, is characterized in that, described buanch unit specifically for:

After receiving described user plane bearer transfer request, to described macro base station, send the response of user plane bearer transfer request; Described macro base station is responded according to described user plane bearer transfer request, the bearing function on Signaling Radio Bearer SRB is carried out to separation, according to the bearing function after separation, generate user's face and shift signaling and send to described user; And make described macro base station after definite described user is carried and shifted successfully, carry out path conversion and resource release.

41. devices as claimed in claim 40, is characterized in that, described buanch unit carries out path conversion and resource discharges, and specifically comprises:

Receive described macro base station and to Mobility Management Entity MME transmit path, change the path conversion request response that receives and forward after request;

According to the conversion request response of described path, discharge corresponding carrying, and the more up general packet wireless service tunnel protocol GTP tunnel of new bearer identifies and transport layer address;

Notify described macro base station to discharge the user plane bearer resource having shifted.

42. devices as claimed in claim 39, is characterized in that, also comprise:

Business change unit, for receive described macro base station receive from core net for after the message of carrying out evolution RAB E-RAB carrying and adding, revising or deleting, request message, bearing modification request message or deleting load-bearing request message are added in the carrying of transmission; According to this carrying, add request message, bearing modification request message or deleting load-bearing request message and carry out user plane bearer renewal.

43. devices as claimed in claim 42, is characterized in that, described business change unit adds request message, bearing modification request message or deleting load-bearing request message according to this carrying and carries out user plane bearer renewal, specifically comprises:

According to described carrying, add request message, bearing modification request message or deleting load-bearing request message, upgrade the relevant parameter of the user plane bearer of each this small base station;

To relative users, send radio resource control RRC connection reconfiguration message, and receive described user and upgrade the RRC returning after the configuration of user's face and reshuffled message.

44. devices as claimed in claim 39, is characterized in that, also comprise:

Switch unit, need to be from described small base station switches back the user plane bearer of self also receiving user in the user plane bearer of determining user for receiving macro base station, the termination user plane data transfer of transmission the message of deleting SRB; Stop user plane data transfer and delete SRB; According to macro base station, at user's face, switch and the rear resource release indication sending of path conversion, carry out resource release.

45. devices as claimed in claim 44, is characterized in that, described switch unit stops user plane data transfer and also deletes after SRB, also for:

To described macro base station, send current data transmission sequence number state information;

To the described macro base station downlink data that sends to user not yet sent successfully, and the upstream data that not yet sends to gateway.

46. devices as claimed in claim 44, is characterized in that, the resource that described switch unit sends according to described macro base station discharges indication, carries out resource release, specifically comprises:

Receive the user's context releasing request that described macro base station sends;

47. 1 kinds of bearer management systems, is characterized in that, comprising: macro base station and small base station, wherein: