CN104255056B

CN104255056B - Switching method and equipment

Info

Publication number: CN104255056B
Application number: CN201280036231.7A
Authority: CN
Inventors: 曾清海; 郭轶
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-10-19
Filing date: 2012-10-19
Publication date: 2018-11-20
Anticipated expiration: 2032-10-19
Also published as: CN104255056A; WO2014059663A1

Abstract

The present embodiments relate to a kind of switching method and equipment.A kind of method includes：The downlink transfer of user equipment is switched to first community or the uplink of user equipment is switched to first community by source base station determination；Source base station sends switching request, the downlink transfer information or uplink transmission information that switching request has user equipment to be switched to the corresponding target BS of first community；Source base station sends switching command, the corresponding downlink resource configuration information of to be switched downlink transfer or the corresponding ascending resource configuration information of to be switched uplink that switching command has for user equipment distribution to user equipment.The cell serves provided by source base station made in the uplink and downlink transfer of user equipment, another cell serves provided by target BS, to improve cell throughout and spectrum efficiency are provided.

Description

Switching method and equipment

Technical field

The present embodiments relate to field of communication technology, in particular to a kind of switching method and equipment.

Background technique

In heterogeneous network（Heterogeneous network, Hetnet）In, in macro base station（macro base station） The some low-power network nodes of layout in coverage area（Low power node, LPN,）To provide hot spot covering, increase cell Capacity and progress load balancing etc..

In the prior art, by for Microcell（pico cell）Cell range is arranged to extend（cell range Extension, CRE）Method by macrocell（macro Cell）User equipment（User equipment, UE）It is switched to micro- Cell, in the UE access Microcell of CRE range, using Microcell as serving cell（serving cell）, downlink and uplink is equal Service is provided by Microcell.However, in order to reduce interference of the macrocell to UE downlink, macrocell is in setting in this technology Almost empty frame（Almost blank subframes, ABS）Do not send or low-power send control signaling with user data from And reduce cell throughout and spectrum efficiency.

Summary of the invention

The present invention provides a kind of switching method and equipment, to improve cell throughout and spectrum efficiency.

The first aspect of the present invention provides a kind of switching method, including：

Source base station, which is determined, switches to first community for the downlink transfer of user equipment or by the uplink of user equipment Switch to first community；

The source base station sends switching request to the corresponding target BS of the first community, and the switching request has institute State the to be switched downlink transfer information of user equipment or uplink transmission information；

The source base station sends switching command to the user equipment, and the switching command has for the user equipment point The corresponding downlink resource configuration information of the to be switched downlink transfer matched or the corresponding ascending resource of to be switched uplink Configuration information, so that the user equipment described after switching keeps the uplink with the source base station and the user equipment passes through By the target BS carry out the user equipment after the downlink transfer, or switching keep under described between the source base station Row transmits and carries out the uplink via the target BS；

Wherein, the downlink transfer information and the downlink resource configuration information include being used to indicate progress downlink transfer to cut The switching type instruction changed, or, the uplink transmission information and the ascending resource configuration information include being used to indicate to carry out The switching type instruction of row transmission switching.

With reference to first aspect, in the first possible implementation of the first aspect, the source base station determination will be described The downlink transfer of user equipment switches to first community, specifically includes：When the source base station is micro-base station, the target BS is When macro base station, the micro-base station, which determines to switch to the downlink transfer of the user equipment, provides the institute of service by the macro base station State first community；Or, the source base station, which is determined, switches to first community for the uplink of the user equipment, specifically include： When the source base station is macro base station, and the target BS is micro-base station, the macro base station is determined the upper of the user equipment Row transmission, which is switched to, provides the first community of service by the micro-base station.

With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible Implementation in, the first community provides the corresponding cell of the source base station of service to the user equipment with before switching Coverage area have overlapping；Or, the target BS have with the frequency of the source base station it is overlapping.

With reference to first aspect, second of the first possible implementation of first aspect or first aspect it is possible Implementation, in a third possible implementation of the first aspect, the source base station is sent to the target BS to be switched Before request message, further include：The source base station sends radio resource allocation request message, the distribution to the target BS Request message is that the user equipment distributes to be switched downlink transfer pair in the first community for the target BS The downlink resource or the corresponding ascending resource of to be switched uplink answered.

With reference to first aspect, the first possible implementation of first aspect, the possible reality of second of first aspect The third possible implementation of existing mode or first aspect, in a fourth possible implementation of the first aspect, also Including：The source base station sends media access control layer control unit MAC CE to the user equipment, and the MAC CE is used for Indicate whether that uplink and downlink transfer is allowed to separate.

With reference to first aspect or the 4th kind of the first possible implementation of first aspect to first aspect possible Any one possible implementation in implementation method, in the fifth possible implementation of the first aspect, under described Row transmission information further includes following a kind of or any number of combination：The radio access bearer E-RAB of at least one evolution is identified, is described At least one E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, described wireless Resources control contextual information includes：Cell-wireless network of downlink radio resource specific configuration information and/or the user equipment Network temporary identifier C-RNTI information；The uplink transmission information includes following a kind of or any number of combination：At least one E-RAB mark Know, at least one described E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, The wireless heterogeneous networks contextual information includes：The C- of ascending wireless resource specific configuration information and/or the user equipment RNTI information.

With reference to first aspect or the 5th kind of the first possible implementation of first aspect to first aspect possible Any one possible implementation in implementation method, it is in the sixth possible implementation of the first aspect, described to be The downlink resource configuration information of the user equipment distribution includes following a kind of or any number of combination：Under Signaling Radio Bearer SRB Row configuration information, Data Radio Bearer DRB downstream arrangements information, media access control MAC downstream arrangements information, physical down are total Enjoy channel PDSCH configuration information；The ascending resource configuration information for user equipment distribution includes following a kind of or appoints Meaning kind combination：SRB uplink configuration information, DRB uplink configuration information, MAC uplink configuration information, PUSCH configuration information.

With reference to first aspect or the 6th kind of the first possible implementation of first aspect to first aspect possible Any one possible implementation in implementation method, it is in a seventh possible implementation of the first aspect, described to cut Changing further includes sign in order；The sign, which is used to indicate the user equipment and creates with the target BS, to be used for It carries the downlink of the to be switched downlink transfer and retains the uplink between the source base station；Or, the finger Indicating knowledge is used to indicate the user equipment and creates with the target BS for carrying the to be switched uplink Line link simultaneously retains the downlink between the source base station；Or, the sign be used to indicate the user equipment with The target BS creates the downlink for carrying the to be switched downlink transfer or creates described to be cut for carrying The uplink for the uplink changed, and retain uplink and downlink between the source base station.

The second aspect of the present invention provides a kind of switching method, including：

Target BS receives the switching request that source base station is sent, the downlink that the switching request has user equipment to be switched Transmit information or uplink transmission information；

The target BS, which determines, allows the downlink transfer of the user equipment or uplink to switch to the target base Stand provide first community；

It is that the to be switched downlink transfer that the user equipment distributes is corresponding that the target BS is sent to the source base station Downlink resource configuration information or the corresponding ascending resource configuration information of to be switched uplink, so as to the use after switching Family equipment keeps the uplink with the source base station and via the target BS progress downlink transfer, or so as to The user equipment is kept the downlink transfer between the source base station and via described in target BS progress after switching Uplink；

Wherein, the downlink transfer information include be used to indicate carry out downlink transfer switching switching type instruction, alternatively, The uplink transmission information includes being used to indicate the switching type instruction for carrying out uplink switching.

In conjunction with second aspect, in the first possible implementation of the second aspect, the target BS, which determines, to be allowed The downlink transfer of the user equipment switches to the first community that the target BS provides, and specifically includes：When the source base station For micro-base station, when the target BS is macro base station, the target BS determines that the downlink transfer for allowing the user equipment is cut Shift to the first community that the target BS provides；Or, the target BS determines the uplink for allowing the user equipment The first community that the target BS provides is switched to, is specifically included：When the source base station is macro base station, the target BS is When micro-base station, the target BS determines allow the uplink of the user equipment to switch to that the target BS provides the One cell.

In conjunction with the possible implementation of the first of second aspect or second aspect, second in second aspect may Implementation in, before the target BS receives the switching request that source base station is sent, further include：The target BS receives The radio resource allocation request message that the source base station is sent, the radio resource allocation request message are used for the target BS It is that the user equipment distributes to be switched downlink transfer corresponding downlink resource or to be switched in the first community The corresponding ascending resource of uplink.

In conjunction with second aspect, second of the possible implementation of the first of second aspect or second aspect is possible Implementation, in the third possible implementation of the second aspect, the downlink transfer information further include it is following a kind of or Any number of combination：The radio access bearer E-RAB mark of at least one evolution, at least one described E-RAB identify corresponding E- RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, the wireless heterogeneous networks contextual information includes：Under The cell of row radio resource specific configuration information and/or the user equipment-radio network temporary identifier C-RNTI information；It is described Uplink transmission information includes following a kind of or any number of combination：At least one E-RAB mark, at least one described E-RAB mark Corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, the wireless heterogeneous networks context letter Breath includes：The C-RNTI information of ascending wireless resource specific configuration information and/or the user equipment.

The third aspect of the present invention provides a kind of switching method, including：

User equipment receives the switching command that source base station is sent, and the switching command has for user equipment distribution The corresponding downlink resource configuration information of to be switched downlink transfer or the corresponding ascending resource configuration of to be switched uplink Information；

The user equipment according to the downlink resource configuration information carry out downlink resource configuration, after switching keep with it is described The uplink of source base station and the downlink transfer is carried out via target BS；Or according to the ascending resource configuration information Ascending resource configuration is carried out, the downlink transfer between the source base station is kept after switching and is carried out via the target BS The uplink；

Wherein, the downlink resource configuration information includes being used to indicate the switching type instruction for carrying out downlink transfer switching, Or, the ascending resource configuration information includes being used to indicate the switching type instruction for carrying out uplink switching.

In conjunction with the third aspect, in the first possible implementation of the third aspect, the received institute of user equipment Stating further includes sign in switching command；The sign is used to indicate the user equipment and the target BS is newly-built For carrying the downlink of the to be switched downlink transfer and retaining the uplink between the source base station；Or, institute State that sign is used to indicate the user equipment and the target BS is created for carrying the to be switched uplink Uplink and retain and the source base station between downlink；It is set or, the sign is used to indicate the user It is standby to create the downlink for carrying the to be switched downlink transfer with the target BS or create described for carrying The uplink of to be switched uplink, and retain uplink and downlink between the source base station.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, second in the third aspect may Implementation in, further include：The PDCP entity division is that uplink PDCP entity and downlink PDCP are real by the user equipment Body, the uplink PDCP entity is corresponding with the second community that the source base station provides, the downlink PDCP entity and the target The first community that base station provides is corresponding；The RLC entity division is that uplink RLC entity and downlink RLC are real by the user equipment Body, the uplink RLC entity is corresponding with the second community that the source base station provides, the downlink RLC entity and the target base The first community provided of standing is corresponding；Wherein, the user equipment is via described in the first community and target BS progress Downlink transfer, and the uplink is carried out via the second community and the source base station.

In conjunction with second of possible implementation of the third aspect, in the third possible implementation of the third aspect In, the source base station is micro-base station, and the target BS is macro base station.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, in the 4th kind of possibility of the third aspect Implementation in, further include：The PDCP entity division is that uplink PDCP entity and downlink PDCP are real by the user equipment Body, the uplink PDCP entity is corresponding with the first community that the target BS provides, the downlink PDCP entity and the source The second community that base station provides is corresponding；The RLC entity division is that uplink RLC entity and downlink RLC are real by the user equipment Body, the uplink RLC entity is corresponding with the first community that the target BS provides, the downlink RLC entity and the source base The second community provided of standing is corresponding；Wherein, the user equipment is via described in the first community and target BS progress Uplink, and the downlink transfer is carried out via the second community and the source base station.

In conjunction with the third aspect the 4th in possible implementation, in the 5th kind of possible implementation of the third aspect In, the source base station is macro base station, and the target BS is micro-base station.

The fourth aspect of the present invention provides a kind of base station, including：

The downlink transfer of user equipment is switched to first community or by user equipment for determining by determination unit Row transmission switches to first community；

Transmission unit, for sending switching request, the switching request tool to the corresponding target BS of the first community There are the downlink transfer information or uplink transmission information that the user equipment is to be switched；

The transmission unit is also used to, and sends switching command to the user equipment, it is described that the switching command, which has, The corresponding downlink resource configuration information of to be switched downlink transfer of user equipment distribution or to be switched uplink are corresponding Ascending resource configuration information, the uplink and the use with the base station are kept so as to the user equipment described after switching Family equipment carries out the downlink transfer via the target BS, or the downlink transfer between the base station is kept after switching And the user equipment carries out the uplink via the target BS；

In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, the determination unit is specifically used for： When the base station is micro-base station, and the target BS is macro base station, determination switches to the downlink transfer of the user equipment The first community of service is provided by the macro base station；Alternatively, when the base station is macro base station, the target BS is micro- base When standing, determining switch to the uplink of the user equipment provides the first community of service by the micro-base station.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect, second in fourth aspect may Implementation in, the first community and the corresponding cell in the base station that service is provided before from switching to the user equipment Coverage area has overlapping；Or, the base station have with the frequency of the target BS it is overlapping.

In conjunction with fourth aspect, second of the possible implementation of the first of fourth aspect or fourth aspect is possible Implementation, in the third possible implementation of the fourth aspect, the transmission unit are also used to：To the target BS Radio resource allocation request message is sent, the allocation request message is institute in the first community for the target BS It states user equipment and distributes the corresponding downlink resource of to be switched downlink transfer or the corresponding uplink money of to be switched uplink Source.

The third in conjunction with the possible implementation of the first of fourth aspect or fourth aspect to fourth aspect is possible Any one possible implementation in implementation, in the fourth possible implementation of the fourth aspect, the hair Unit is sent to be also used to：Media access control layer control unit MAC CE is sent to the user equipment, the MAC CE is for referring to Whether show allows uplink and downlink transfer to separate.

The 4th kind in conjunction with the possible implementation of the first of fourth aspect or fourth aspect to fourth aspect is possible Any one possible implementation in implementation, in the 5th kind of possible implementation of fourth aspect, under described Row transmission information further includes following a kind of or any number of combination：The radio access bearer E-RAB of at least one evolution is identified, is described At least one E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, described wireless Resources control contextual information includes：Cell-wireless network of downlink radio resource specific configuration information and/or the user terminal Network temporary identifier C-RNTI information；The uplink transmission information includes following a kind of or any number of combination：At least one E-RAB mark Know, at least one described E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, The wireless heterogeneous networks contextual information includes：The C- of ascending wireless resource specific configuration information and/or the user terminal RNTI information.

The 5th kind in conjunction with the possible implementation of the first of fourth aspect or fourth aspect to fourth aspect is possible Any one possible implementation in implementation, in the 6th kind of possible implementation of fourth aspect：It is described to be The downlink resource configuration information of the user equipment distribution includes following a kind of or any number of combination：Under Signaling Radio Bearer SRB Row configuration information, Data Radio Bearer DRB downstream arrangements information, media access control MAC downstream arrangements information, physical down are total Enjoy channel PDSCH configuration information；The ascending resource configuration information for user equipment distribution includes following a kind of or appoints Meaning kind combination：SRB uplink configuration information, DRB uplink configuration information, MAC uplink configuration information, PUSCH configuration information.

The 6th kind in conjunction with the possible implementation of the first of fourth aspect or fourth aspect to fourth aspect is possible Any one possible implementation in implementation, it is described to cut in the 7th kind of possible implementation of fourth aspect Changing further includes sign in order；The sign, which is used to indicate the user equipment and creates with the target BS, to be used for It carries the downlink of to be switched downlink transfer and retains the uplink between the base station；Or, the sign It is used to indicate the user equipment and the target BS creates uplink for carrying the to be switched uplink And retain the downlink between the base station；Or, the sign is used to indicate the user equipment and the target Base station creates the downlink for carrying the to be switched downlink transfer or creates for carrying the to be switched uplink The uplink of transmission, and retain uplink and downlink between the base station

The fifth aspect of the present invention provides a kind of base station, including：

Receiving unit, for receiving the switching request message of source base station transmission, the switching request is waited for user equipment The downlink transfer information or uplink transmission information of switching；

Determination unit allows the downlink transfer of the user equipment or uplink to switch to the base station and mention for determining The first community of confession；

Transmission unit is that the to be switched downlink transfer that the user equipment distributes is corresponding for sending to the source base station Downlink resource configuration information or the corresponding ascending resource configuration information of to be switched uplink, so as to the use after switching Family equipment keeps the uplink with the source base station and the user equipment carries out institute via the base station after handover State downlink transfer, or so as to after switching the user equipment keep the downlink transfer and the user between the source base station Equipment carries out the uplink via the base station after handover；

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, the determination unit is specific to use In：When the source base station is micro-base station, and the base station is macro base station, determine that the downlink transfer for allowing the user equipment switches The first community provided to the base station；Or, when the base station is micro-base station, determining allows when the source base station is macro base station The uplink of the user equipment switches to the first community that the base station provides.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, second at the 5th aspect may Implementation in, the receiving unit is also used to receive the radio resource allocation request message that the source base station is sent, described Radio resource allocation request message for the base station be in the first community user equipment distribute it is to be switched under Row transmits corresponding downlink resource or the corresponding ascending resource of to be switched uplink.

In conjunction with the 5th aspect, second in terms of the first possible implementation or the 5th of the 5th aspect is possible Implementation, in the third possible implementation of the 5th aspect, the downlink transfer information further include it is following a kind of or Any number of combination：The radio access bearer E-RAB mark of at least one evolution, at least one described E-RAB identify corresponding E- RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, the wireless heterogeneous networks contextual information includes：Under The cell of row radio resource specific configuration information and/or the user equipment-radio network temporary identifier C-RNTI information；It is described Uplink transmission information includes following a kind of or any number of combination：At least one E-RAB mark, at least one described E-RAB mark Corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, the wireless heterogeneous networks context letter Breath includes：The C-RNTI information of ascending wireless resource specific configuration information and/or the user equipment.

The sixth aspect of the present invention provides a kind of user equipment, including：

Receiving unit, for receiving the switching command of source base station transmission, it is the user equipment that the switching command, which has, The corresponding uplink money of the corresponding downlink resource configuration information of to be switched downlink transfer or to be switched uplink of distribution Source configuration information；

Configuration unit, for carrying out downlink resource configuration according to the downlink resource configuration information, holding and institute after switching It states the uplink of source base station and carries out the downlink transfer via target BS after handover；Or it is provided according to the uplink Source configuration information carries out ascending resource configuration, and the downlink transfer and the user between the source base station is kept to set after switching It is standby to carry out the uplink via the target BS after handover；

Further include in the switching command in the first possible implementation of the 6th aspect in conjunction with the 6th aspect Sign；The sign be used to indicate the user equipment created with the target BS it is described to be switched for carrying Downlink transfer downlink and retain and the source base station between uplink；Or, the sign is used to indicate The user equipment and the target BS create the uplink for carrying the to be switched uplink and retain with Downlink between the source base station；Or, the sign is used to indicate the user equipment and the target BS is new It builds the downlink for carrying the to be switched downlink transfer or creates for carrying the to be switched uplink Uplink, and retain uplink and downlink between the source base station.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect, second at the 6th aspect may Implementation in, further include division unit, be used for：It is that uplink PDCP entity and downlink PDCP are real by the PDCP entity division Body, the uplink PDCP entity is corresponding with the second community that the source base station provides, the downlink PDCP entity and the target The first community that base station provides is corresponding；It is uplink RLC entity and downlink RLC entity, the uplink by the RLC entity division RLC entity is corresponding with the second community that the source base station provides, the downlink RLC entity and the first of target BS offer Cell is corresponding；Wherein, the user equipment carries out the downlink transfer via the first community and the target BS, and passes through The uplink is carried out by the second community and the source base station.

In conjunction with second of possible implementation of the 6th aspect, in the third possible implementation of the 6th aspect In, the source base station is micro-base station, and the target BS is macro base station.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect, in the 4th kind of possibility of the 6th aspect Implementation in, further include division unit, be used for：It is that uplink PDCP entity and downlink PDCP are real by the PDCP entity division Body, the uplink PDCP entity is corresponding with the first community that the target BS provides, the downlink PDCP entity and the source The second community that base station provides is corresponding；It is uplink RLC entity and downlink RLC entity, the uplink by the RLC entity division RLC entity is corresponding with the first community that the target BS provides, the downlink RLC entity and the second of source base station offer Cell is corresponding；Wherein, the user equipment carries out the uplink via the first community and the target BS, and passes through The downlink transfer is carried out by the second community and the source base station.

In conjunction with the 6th aspect the 4th in possible implementation, the 6th aspect the 5th kind of possible implementation In, the source base station is macro base station, and the target BS is micro-base station.

The seventh aspect of the present invention provides a kind of base station, including：

The downlink transfer of user equipment is switched to first community or by the uplink of user equipment for determining by processor Transmission switches to first community；

Transmitter, for sending switching request to the corresponding target BS of the first community, the switching request has The to be switched downlink transfer information of the user equipment or uplink transmission information；

The transmitter is also used to, and sends switching command to the user equipment, it is the use that the switching command, which has, The corresponding downlink resource configuration information of to be switched downlink transfer of family equipment distribution or to be switched uplink are corresponding Ascending resource configuration information keeps the uplink and the user with the base station so as to the user equipment described after switching Equipment after handover via the target BS keep after the downlink transfer, or switching under described between the base station Row transmits and the user equipment carries out the uplink via the target BS after handover；

In conjunction with the 7th aspect, in the first possible implementation of the 7th aspect, the processor is specifically used for：When The base station be micro-base station, the target BS be macro base station when, determine by the downlink transfer of the user equipment switch to by The macro base station provides the first community of service；Alternatively, when the base station is macro base station, the target BS is micro-base station When, determining switch to the uplink of the user equipment provides the first community of service by the micro-base station.

In conjunction with the first possible implementation of the 7th aspect or the 7th aspect, second at the 7th aspect may Implementation in, the first community provides the corresponding cell of the source base station of service to the user equipment with before switching Coverage area have overlapping；Or, the target BS have with the frequency of the source base station it is overlapping.

In conjunction with the 7th aspect, second in terms of the first possible implementation or the 7th of the 7th aspect is possible Implementation, in the third possible implementation of the 7th aspect, the transmitter is also used to：It is sent out to the target BS Radio resource allocation request message is sent, the allocation request message is described in the first community for the target BS User equipment distributes the corresponding downlink resource of to be switched downlink transfer or the to be switched corresponding ascending resource of uplink.

The third in conjunction with the first possible implementation of the 7th aspect or the 7th aspect to the 7th aspect is possible Any one possible implementation in implementation, in the 4th kind of possible implementation of the 7th aspect, the hair The machine of penetrating is also used to：Media access control layer control unit MAC CE is sent to the user equipment, the MAC CE is used to indicate Uplink and downlink transfer is whether allowed to separate.

The 4th kind in conjunction with the first possible implementation of the 7th aspect or the 7th aspect to the 7th aspect is possible Any one possible implementation in implementation, in the 5th kind of possible implementation of the 7th aspect, under described Row transmission information further includes following a kind of or any number of combination：The radio access bearer E-RAB of at least one evolution is identified, is described At least one E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, described wireless Resources control contextual information includes：Cell-wireless network of downlink radio resource specific configuration information and/or the user terminal Network temporary identifier C-RNTI information；The uplink transmission information includes following a kind of or any number of combination：At least one E-RAB mark Know, at least one described E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, The wireless heterogeneous networks contextual information includes：The C- of ascending wireless resource specific configuration information and/or the user terminal RNTI information.

The 5th kind in conjunction with the first possible implementation of the 7th aspect or the 7th aspect to the 7th aspect is possible Any one possible implementation in implementation, it is described to be in the 6th kind of possible implementation of the 7th aspect The downlink resource configuration information of the user equipment distribution includes following a kind of or any number of combination：Under Signaling Radio Bearer SRB Row configuration information, Data Radio Bearer DRB downstream arrangements information, media access control MAC downstream arrangements information, physical down are total Enjoy channel PDSCH configuration information；The ascending resource configuration information for user equipment distribution includes following a kind of or appoints Meaning kind combination：SRB uplink configuration information, DRB uplink configuration information, MAC uplink configuration information, PUSCH configuration information.

The 6th kind in conjunction with the first possible implementation of the 7th aspect or the 7th aspect to the 7th aspect is possible Any one possible implementation in implementation, it is described to cut in the 7th kind of possible implementation of the 7th aspect Changing further includes sign in order；The sign, which is used to indicate the user equipment and creates with the target BS, to be used for It carries the downlink of to be switched downlink transfer and retains the uplink between the base station；Or, the sign It is used to indicate the user equipment and the target BS creates uplink for carrying the to be switched uplink And retain the downlink between the base station；Or, the sign is used to indicate the user equipment and the target Base station creates the downlink for carrying the to be switched downlink transfer or creates for carrying the to be switched uplink The uplink of transmission, and retain uplink and downlink between the base station.

The eighth aspect of the present invention provides a kind of base station, including：

Receiver, for receiving the switching request message of source base station transmission, the switching request has user equipment to be cut The downlink transfer information or uplink transmission information changed；

Processor, for determining that allowing the downlink transfer of the user equipment or uplink to switch to the base station provides First community；

Transmitter is that the to be switched downlink transfer that the user equipment distributes is corresponding for sending to the source base station Downlink resource configuration information or the corresponding ascending resource configuration information of to be switched uplink, so as to the user after switching Equipment keeps the uplink with the source base station and the user equipment is after handover via described in the progress of the base station Downlink transfer, or so that the user equipment described after switching is kept the downlink transfer between the source base station and the user sets It is standby to carry out the uplink via the base station after handover；

In conjunction with eighth aspect, in the first possible implementation of eighth aspect, the processor is specifically used for： When the source base station is micro-base station, and the base station is macro base station, determine that the downlink transfer for allowing the user equipment switches to The first community that the base station provides；Or, when the base station is micro-base station, determining allows institute when the source base station is macro base station The uplink for stating user equipment switches to the first community that the base station provides.

In conjunction with the possible implementation of the first of eighth aspect or eighth aspect, second in eighth aspect may Implementation in, receive the radio resource allocation request message that the source base station is sent, the radio resource allocation request disappears Breath is that the user equipment distributes to be switched downlink transfer corresponding downlink money in the first community for the base station Source or the corresponding ascending resource of to be switched uplink.

In conjunction with eighth aspect, second of the possible implementation of the first of eighth aspect or eighth aspect is possible Implementation, in the third possible implementation of eighth aspect, the downlink transfer information further include it is following a kind of or Any number of combination：The radio access bearer E-RAB mark of at least one evolution, at least one described E-RAB identify corresponding E- RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, the wireless heterogeneous networks contextual information includes：Under The cell of row radio resource specific configuration information and/or the user equipment-radio network temporary identifier C-RNTI information；It is described Uplink transmission information includes following a kind of or any number of combination：At least one E-RAB mark, at least one described E-RAB mark Corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, the wireless heterogeneous networks context letter Breath includes：The C-RNTI information of ascending wireless resource specific configuration information and/or the user equipment.

The ninth aspect of the present invention provides a kind of user equipment, including：

Receiver, for receiving the switching command of source base station transmission, the switching command has for the user equipment point The corresponding downlink resource configuration information of the to be switched downlink transfer matched or the corresponding ascending resource of to be switched uplink Configuration information；

Processor, for according to the downlink resource configuration information carry out downlink resource configuration, after switching keep with it is described The uplink of source base station and the downlink transfer is carried out via target BS after handover；Or according to the ascending resource Configuration information carries out ascending resource configuration, and the downlink transfer and the user equipment between the source base station are kept after switching The uplink is carried out via the target BS after handover；

Further include in the switching command in the first possible implementation of the 9th aspect in conjunction with the 6th aspect Sign；The sign be used to indicate the user equipment created with the target BS it is described to be switched for carrying Downlink transfer downlink and retain and the source base station between uplink；Or, the sign is used to indicate The user equipment and the target BS create the uplink for carrying the to be switched uplink and retain with Downlink between the source base station；Or, the sign is used to indicate the user equipment and the target BS is new It builds the downlink for carrying the to be switched downlink transfer or creates for carrying the to be switched uplink Uplink, and retain uplink and downlink between the source base station.

In conjunction with the first possible implementation of the 9th aspect or the 9th aspect, second at the 9th aspect may Implementation in, the processor is also used to：By the PDCP entity division be uplink PDCP entity and downlink PDCP entity, The uplink PDCP entity is corresponding with the second community that the source base station provides, the downlink PDCP entity and the target BS The first community of offer is corresponding；It is uplink RLC entity and downlink RLC entity by the RLC entity division, the uplink RLC is real Body is corresponding with the second community that the source base station provides, the first community that the downlink RLC entity and the target BS provide It is corresponding；Wherein, the user equipment carries out the downlink transfer via the first community and the target BS, and via institute It states second community and the source base station carries out the uplink.

In conjunction with second of possible implementation of the 9th aspect, in the third possible implementation of the 9th aspect In, the source base station is micro-base station, and the target BS is macro base station.

In conjunction with the first possible implementation of the 9th aspect or the 9th aspect, in the 4th kind of possibility of the 9th aspect Implementation in, the processor is also used to：By the PDCP entity division be uplink PDCP entity and downlink PDCP entity, The uplink PDCP entity is corresponding with the first community that the target BS provides, the downlink PDCP entity and the source base station The second community of offer is corresponding；It is uplink RLC entity and downlink RLC entity by the RLC entity division, the uplink RLC is real Body is corresponding with the first community that the target BS provides, the second community that the downlink RLC entity and the source base station provide It is corresponding；Wherein, the user equipment carries out the uplink via the first community and the target BS, and via institute It states second community and the source base station carries out the downlink transfer.

In conjunction with the 4th kind of possible implementation of the 9th aspect, in the 5th kind of possible implementation of the 9th aspect In, the source base station is macro base station, and the target BS is micro-base station.

Switching method provided by the invention and equipment, source base station switch to the uplink of user equipment or downlink transfer Target BS makes the cell serves provided by source base station in the uplink and downlink transfer of user equipment, another The cell serves provided by target BS, to improve cell throughout and spectrum efficiency.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the flow chart of switching method one embodiment provided by the invention；

Fig. 2 is the flow chart of another embodiment of switching method provided by the invention；

Fig. 3 is the flow chart of another embodiment of switching method provided by the invention；

Fig. 4 is the flow chart of another embodiment of switching method provided by the invention；

Fig. 5 is the schematic diagram of PDCP entity and RLC AM entity that present example provides；

Fig. 6 is the schematic diagram of user equipment and one communication scenes of source base station and target BS in embodiment illustrated in fig. 4；

Fig. 7 is the schematic diagram of another communication scenes of user equipment Yu source base station and target BS in embodiment illustrated in fig. 4；

A kind of heterogeneous network schematic diagram of a scenario that Fig. 8 embodiment of the present invention is applicable in；

Fig. 9 is the flow chart of another embodiment of switching method provided by the invention；

Figure 10 is the schematic diagram of user equipment and one communication scenes of source base station and target BS in embodiment illustrated in fig. 9；

Figure 11 is the signal of another communication scenes of user equipment Yu source base station and target BS in embodiment illustrated in fig. 9 Figure；

Figure 12 is a kind of network architecture schematic diagram of switching method provided by the invention；

Figure 13 is another network architecture schematic diagram of switching method provided by the invention；

Figure 14 is the structural schematic diagram of base station one embodiment provided by the invention；

Figure 15 is the structural schematic diagram of another embodiment of base station provided by the invention；

Figure 16 is the structural schematic diagram of user equipment one embodiment provided by the invention；

Figure 17 is the structural schematic diagram of another embodiment of base station provided by the invention；

Figure 18 is the structural schematic diagram of another embodiment of base station provided by the invention；

Figure 19 is the structural schematic diagram of another embodiment of user equipment provided by the invention；

Figure 20 is the structural schematic diagram of communication system one embodiment provided by the invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

The techniques described herein may be used in various communication systems, such as current 2G, 3G communication system and next generation communication System, such as global system for mobile communications（GSM, Global System for Mobile communications）, code divides more Location（CDMA, Code Division Multiple Access）System, time division multiple acess（TDMA, Time Division Multiple Access）System, wideband code division multiple access（WCDMA, Wideband Code Division Multiple Access Wireless）, frequency division multiple access（FDMA, Frequency Division Multiple Addressing）System, just Hand over frequency division multiple access（OFDMA, Orthogonal Frequency-Division Multiple Access）System, single carrier FDMA（SC-FDMA）System, General Packet Radio Service（GPRS, General Packet Radio Service）System is long Phase evolution（LTE, Long Term Evolution）System and other such communication systems.

User equipment involved in the application can be wireless terminal and be also possible to catv terminal, and wireless terminal can be Refer to the equipment for providing a user voice and/or data connectivity, there is the handheld device of wireless connecting function or is connected to nothing Other processing equipments of line modem.Wireless terminal can be through wireless access network（For example, RAN, Radio Access Network）It is communicated with one or more core nets, wireless terminal can be mobile terminal, such as mobile phone（Or it is " honeycomb " phone）With the computer with mobile terminal, for example, it may be portable, pocket, hand-held, built-in computer Or vehicle-mounted mobile device, they exchange language and/or data with wireless access network.For example, personal communication service（PCS, Personal Communication Service）Phone, wireless phone, Session initiation Protocol（SIP）Phone, Wireless Local Loop Road（WLL, Wireless Local Loop）It stands, personal digital assistant（PDA, Personal Digital Assistant）Deng Equipment.Wireless terminal is referred to as system, subscriber unit（Subscriber Unit）, subscriber station（Subscriber Station）, movement station（Mobile Station）, mobile station（Mobile）, distant station（Remote Station）, access point （Access Point）, remote terminal（Remote Terminal）, access terminal（Access Terminal）, user terminal （User Terminal）, user agent（User Agent）, user equipment（User Device）Or user equipment（User Equipment）.

Base station involved in the application（For example, access point）, can be and refer to the accession in net in the sky on interface by one Or the equipment of multiple sectors and wireless terminal communications.The air frame that base station can be used for receive mutually is converted with IP grouping, As the router between wireless terminal and the rest part of access net, wherein the rest part for accessing net may include Internet protocol （IP）Network.Attribute management of the base station also tunable to air interface.For example, base station can be the base station in GSM or CDMA （BTS, Base Transceiver Station）, it is also possible to the base station in WCDMA（NodeB）, can also be drilling in LTE Into type base station（NodeB or eNB or e-NodeB, evolutional Node B）, the application do not limit.

In addition, the terms " system " and " network " are often used interchangeably herein.The terms " and/ Or ", only a kind of incidence relation for describing affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, it can be with table Show：Individualism A exists simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, typicallys represent front and back Affiliated partner is a kind of relationship of "or".

In various embodiments of the present invention, the handover operation being related to, its essence is by the uplink and downlink of user equipment Transmit isolated operation.Therefore, correspondingly, the message such as the switching request being directed to, handoff response, switching command, difference can To be the message for requesting, responding and ordering execution uplink and downlink transfer lock out operation.

Fig. 1 is the flow chart of switching method one embodiment provided by the invention, and this method can be executed by source base station, such as Fig. 1, this method include：

S101, source base station, which are determined, switches to first community for the downlink transfer of user equipment or by the uplink of user equipment Transmission switches to first community.

S102, source base station send switching request to the corresponding target BS of first community, set in switching request with user Standby to be switched downlink transfer information or uplink transmission information.

S103, source base station send switching command to user equipment, and having in switching command is that user equipment distribution is to be switched The corresponding downlink resource configuration information of downlink transfer or the corresponding ascending resource configuration information of to be switched uplink, with Just user equipment keeps the uplink with source base station and via target BS progress downlink transfer, or user after switching after switching Equipment keeps carrying out uplink with the downlink transfer of source base station and via target BS.

Wherein, downlink transfer information and downlink resource configuration information include being used to indicate the switching for carrying out downlink transfer switching Type instruction, or, uplink transmission information and ascending resource configuration information include being used to indicate the switching for carrying out uplink switching Type instruction.

In the present embodiment, the uplink of user equipment or downlink transfer are switched to target BS by source base station, thus One in the uplink and downlink transfer of the user equipment after handover cell serves provided by source base station are provided, another by The cell serves that target BS provides realize the uplink and downlink transfer separation of user equipment, reduce base station and set to user It is interfered caused by standby, to improve cell throughout and spectrum efficiency.

Optionally, the first community that target BS provides is corresponding with the source base station for providing service to user equipment before switching The coverage area of cell has overlapping；Or, target BS have with the frequency of source base station it is overlapping.When coverage area or frequency have overlapping, And when user equipment individually carries out uplink and downlink communication with a base station, the interference of another base station will receive.Pass through uplink and downlink Transmission separation, i.e. user equipment and a base station keep uplink, keep downlink transfer with another base station, can guarantee Under the premise of user experiences, the interference that it is transmitted in base station is effectively reduced.

Under a kind of implement scene, source base station can be micro-base station, and micro-base station can be with finger low-power network node（low Power node, LPN）Perhaps small base station or far end radio frequency head（Remote radio head, RRH）Deng.User equipment Current serving cell is the Microcell that micro-base station provides（pico cell）, user equipment and Microcell carry out uplink communication and Downlink communication.Under the implement scene, source base station, which can be determined, is switched to macro base from Microcell for the downlink transfer of user equipment Stand provide macrocell（macro cell）, that is, the target BS of switching can be macro base station, and the Target cell of switching is macro base It stands the first community provided, and user equipment is kept and the uplink of Microcell.

Optionally, under the implement scene that source base station is micro-base station and target BS is macro base station, macro base station provide the One cell provides the corresponding cell of source base station serviced or macro base station to user equipment before can covering switching and micro-base station provides Frequency can have overlapping.

Under another implement scene, source base station can also be macro base station, and the current serving cell of user equipment is macro base It stands the macrocell provided, user equipment and macrocell carry out uplink communication and downlink communication.Under the implement scene, source base station can The uplink of user equipment is switched to micro-base station from macrocell with determination（micro base station）What is provided is small Area（pico cell）, that is, the target BS of switching can be micro-base station, and the Target cell of switching is first that micro-base station provides Cell, and user equipment keeps the downlink transfer with macrocell.

Optionally, it under the implement scene that source base station is macro base station and target BS is micro-base station, is set before switching to user The standby corresponding cell of source base station for providing service can cover the first community of micro-base station offer or macro base station is provided with micro-base station Frequency can have overlapping.

After source base station determines target BS, switching request can be sent to target BS, is set in switching request with user Standby to be switched downlink transfer information, so that user equipment keeps the uplink with source base station and via target base after switching It stands and carries out downlink transfer；Alternatively, with the uplink transmission information that user equipment is to be switched in switching request, to use after handover Family equipment keeps carrying out uplink with the downlink transfer of source base station and via target BS.

Under another implement scene, micro-base station can be with（It such as can be source base station or target BS）With lower-wattage to User equipment sends downlink data, and user equipment can be with higher-wattage to macro base station（It such as can be target BS or source base It stands）Send upstream data.It is also possible to interference of the base station to user equipment be reduced, to improve cell throughout and frequency spectrum effect Rate.It will be understood to those skilled in the art that the implement scene can be applied to user equipment apart from micro-base station center ratio distance The closer scene in macro base station center, also can be applied to other scenes, details are not described herein.

In the present embodiment, the downlink transfer information having in downlink resource configuration information and switching request includes for referring to Show the switching type instruction for carrying out downlink transfer switching.Optionally, downlink transfer information can also include following a kind of or any Kind combination：The radio access bearer of at least one evolution（Evolved Radio Access Bearer, E-RAB）It identifies, at least One E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks（Radio Resource Control, RRC） Context（context）Information, wherein RRC contextual information may include downlink radio resource specific configuration information and/or use The cell of family equipment-radio network temporary identifier C-RNTI information.

Similar, the uplink transmission information and ascending resource configuration information having in switching request include being used to indicate progress The switching type instruction of uplink switching.Optionally, uplink transmission information can also include following a kind of or any number of combination： At least one E-RAB mark, at least one E-RAB identify corresponding E-RAB QoS parameter, wireless heterogeneous networks context Information, wherein wireless heterogeneous networks context may include：Ascending wireless resource specific configuration information and/or user equipment it is small Area-radio network temporary identifier（Cell Radio Network Temporary Identifier, C-RNTI）Information.

It is understood that can also have other wireless resource configurations in switching request, it is numerous to list herein.

As a kind of feasible embodiment, target BS is after the switching request for receiving source base station transmission, Ke Yiwei User equipment distributes the corresponding downlink resource configuration information of to be switched downlink transfer or to be switched uplink is corresponding Ascending resource configuration information.Under the implement scene, target BS can carry mesh in the handoff response for being sent to source base station Mark the corresponding downlink resource configuration information of to be switched downlink transfer or to be switched uplink that base station is user equipment distribution Transmit corresponding ascending resource configuration information.Source base station can send switching command to user equipment, can be in the switching command It is passed with the corresponding downlink resource configuration information of to be switched downlink transfer distributed for user equipment or to be switched uplink Defeated corresponding ascending resource configuration information.

As another feasible embodiment, source base station can send radio resource allocation request to target BS in advance Message, the allocation request message are distributed to be switched downlink transfer in first community for target BS for user equipment and are corresponded to Downlink resource or the corresponding ascending resource of to be switched uplink.That is, source base station can request in advance in target BS First community in distribute the corresponding downlink resource of to be switched downlink transfer or to be switched uplink for user equipment Corresponding ascending resource, without switching over process.

Under the implement scene, source base station can be switched to mesh in the determining uplink by user equipment or downlink transfer After marking base station, switching request is sent to target BS and sends switching command to user equipment, which on the one hand can To indicate that target BS using the corresponding downlink resource of downlink transfer or the corresponding ascending resource of uplink, on the other hand may be used With same switching command, it is also used to indicate whether that uplink and downlink transfer is allowed to separate.

Correspondingly, source base station can also send media access control layer unit MACCE to user equipment, it is used to indicate whether Uplink and downlink transfer is allowed to separate.

It should be noted that the user equipment slower for movement speed, is the user equipment point in target BS in advance After ascending resource or downlink resource, source base station uplink can be carried out by switching command notifying user equipment and downlink passes Defeated separation；And user equipment faster for movement speed, target BS be in advance the user equipment distribution ascending resource or After downlink resource, source base station uplink can be carried out by MAC CE notifying user equipment and downlink transfer separates, this reality Mode is applied compared with through the method for switching request and switching command, switching delay can be reduced.

Optionally, it includes following one kind or any number of group that target BS, which is the downlink resource configuration information of user equipment distribution, It closes：Under Signaling Radio Bearer SRB downstream arrangements information, Data Radio Bearer DRB downstream arrangements information, media access control MAC Row configuration information, Physical Downlink Shared Channel PDSCH configuration information.

SRB downstream arrangements information includes following a kind of or any number of combination：SRB mark, wireless spread-spectrum technology（radio link control,RLC）The information such as downstream arrangements, Logic Channel Identifier；DRB downstream arrangements information includes the grouping system of evolution System load identification（eps-bearer Identity）, DRB mark, Packet Data Convergence Protocol（packet data convergence protocol,PDCP）Downstream arrangements, wireless spread-spectrum technology（RLC）Downstream arrangements, Logic Channel Identifier.

Wherein, Packet Data Convergence Protocol downstream arrangements information includes following a kind of or any number of combination：Abandon timer Configuration, head compression protocol configure, for wireless spread-spectrum technology affirmation mode（RLC acknowledged mode,RLC AM）It is It is no to need to send PDCP state report in switching, for wireless spread-spectrum technology Unacknowledged Mode（RLC unacknowledged mode,RLC UM）When the information such as PDCP sequence number length.

Wherein, wireless spread-spectrum technology downstream arrangements information includes following a kind of or any number of combination：Downlink RLC-AM configuration, The information such as downlink RLC-UM configuration.Downlink RLC-AM configuration includes following a kind of or any number of combination：Reorder timer configuration, RLC state report forbids the information such as timer configuration.Downlink RLC-UM configuration includes following a kind of or any number of combination：Sequence number The information such as length configuration, the timer configuration that reorders.

Wherein, MAC downstream arrangements information includes following a kind of or any number of combination：It is discontinuous to receive（discontinuous reception：DRX）The information such as configuration, the configuration of secondary cell packet data inactivity timer.

Wherein PDSCH configuration information includes following a kind of or any number of combination：Reference signal power configuration, reference signal are every The information such as resource element power and the every resource element power ratio configuration of PDSCH.

Similar, target BS is that the ascending resource configuration information of user equipment distribution includes following one kind or any number of group It closes：SRB uplink configuration information, DRB uplink configuration information, MAC uplink configuration information, PUSCH configuration information.

SRB uplink configuration information includes following a kind of or any number of combination：SRB is identified, wireless spread-spectrum technology uplink configures, The information such as Logic Channel Identifier, the configuration of logic channel uplink；DRB uplink configuration information includes following a kind of or any number of combination： The grouping system load identification of evolution（eps-bearer Identity）, DRB mark, Packet Data Convergence Protocol collocating uplink The information such as configuration, the configuration of wireless spread-spectrum technology uplink, Logic Channel Identifier, the configuration of logic channel uplink.

Wherein Packet Data Convergence Protocol uplink configuration information includes following a kind of or any number of combination：Timer is abandoned to match It sets, head compression protocol configures, for wireless spread-spectrum technology affirmation mode（RLC AM）Whether need to send PDCP shape in switching State is reported, for wireless spread-spectrum technology Unacknowledged Mode（RLC UM）When the information such as PDCP sequence number length.

Wherein, wireless spread-spectrum technology uplink configuration information includes following a kind of or any number of combination：Uplink RLC-AM configuration, The information such as uplink RLC-UM configuration.Uplink RLC-AM configuration includes following a kind of or any number of combination：Poll（poll）It is fixed to retransmit When device configuration, poll pdu number configuration, poll byte number configuration, RLC PDU maximum retransmission configuration etc. information.Downlink RLC-UM configuration includes the information such as sequence number length configuration.

Wherein, logic channel uplink configuration information includes following a kind of or any number of combination：Priority of logical channels configuration, The information such as the configuration of bgical channel priority bit rate, logic channel group, token bucket algorithm parameter configuration.

Wherein, MAC uplink configuration information includes following a kind of or any number of combination：DRX configuration, uplink share transmission channel The information such as configuration, power headroom reporting (PHR) configuration, the configuration of secondary cell packet data inactivity timer.

Wherein, PUSCH configuration information includes following a kind of or any number of combination：Whether frequency parameter configuration allows high-order The information such as modulation configuration, uplink reference signals configuration.

Above-mentioned SRB/DRB/MAC downlink/uplink configuration information, PDSCH/PUSCH configuration information etc. are unless otherwise instructed Suitable for following embodiment.

Source base station sends switching command to user equipment, and having target BS in switching command is that user equipment distribution is to be cut The corresponding downlink resource configuration information of the downlink transfer changed or the corresponding ascending resource configuration information of to be switched uplink. Wherein, downlink resource configuration information includes being used to indicate the switching type instruction for carrying out downlink transfer switching, alternatively, ascending resource Configuration information includes being used to indicate the switching type instruction for carrying out uplink switching.

Optionally, in the switching command that source base station is sent to user equipment, sign can also be carried, sign can To be used to indicate user equipment and target BS creates the downlink for carrying to be switched downlink transfer and retains and source Uplink between base station, or uplink and reservation and the source base station for carrying the to be switched uplink Between downlink.Under this kind of scene, when switching, user equipment and source base station pass through the uplink or downlink chain that retain Road normal communication, after the completion of switching, user equipment and target BS pass through the downlink or the positive normal open of uplink after switching Letter.

Optionally, it is to be switched for carrying to can serve to indicate that user equipment and target BS are created for above-mentioned sign The downlink of downlink transfer simultaneously deletes the downlink between source base station, or for carrying to be switched uplink Line link simultaneously deletes the uplink between source base station.Downlink between this kind of deletion user equipment and source base station or Under the implement scene of uplink, then the uplink or downlink retained in source base station can continue to communicate.

Optionally, it is to be switched for carrying to can serve to indicate that user equipment and target BS are created for above-mentioned sign The downlink or uplink of downlink transfer, and retain downlink and uplink between source base station.This kind with Family equipment retain and source base station between downlink and uplink implement scene under, in handoff procedure user equipment with The uplink and downlink communication of source base station can continue, and reduce service delay or business interruption time in handoff procedure.

Switching method provided in an embodiment of the present invention, source base station switch to the uplink of user equipment or downlink transfer Target BS, to make a cell provided by source base station in the uplink and downlink transfer of user equipment after handover Service, another cell serves provided by target BS.For example, it may be user equipment is sent out with lower power to micro-base station Upstream data is sent, and macro base station can send downlink data to user equipment with stronger transmission power.For another example, when user sets When standby closer apart from micro-base station center, micro-base station sends downlink data to user equipment with lower-wattage, and user equipment is with higher Power sends upstream data to macro base station.It is thus possible to interference of the base station to user equipment be reduced, to improve cell throughout And spectrum efficiency.

Present embodiments provide it is a kind of the uplink of user equipment or downlink transfer are switched into target BS, to use The method that the uplink and downlink of family equipment are communicated from different base stations, this method be equally applicable to existing carrier type and New carrier type（New Carrier Type, NCT）, new carrier type can send or not send primary synchronization signal/auxiliary synchronization Signal etc. can send the Physical Downlink Control Channel of enhancing on NCT（E-PDCCH）Or pass through PDCCH by other carrier waves Or E-PDCCH carries out cross scheduling.

Fig. 2 is the flow chart of another embodiment of switching method provided by the invention, is existed in upper embodiment difference It can be executed by target BS in this method, such as Fig. 2, this method includes：

S201, target BS receive source base station send switching request, switching request have user equipment it is to be switched under Row transmission information or uplink transmission information.

S202, target BS, which determine, allows the downlink transfer of user equipment or uplink to switch to what target BS provided First community.

It is that the corresponding downlink of to be switched downlink transfer that user equipment distributes provides that S203, target BS are sent to source base station Source configuration information or the corresponding ascending resource configuration information of to be switched uplink, so as to after switching user equipment keep with The uplink of source base station and carry out downlink transfer via target BS, or so as to after switching user equipment keep between source base station Downlink transfer and via target BS carry out uplink.

Wherein, downlink transfer information includes being used to indicate the switching type instruction for carrying out downlink transfer switching, alternatively, uplink Transport packet, which includes, is used to indicate the switching type instruction for carrying out uplink switching.

Under a kind of implement scene, source base station can be micro-base station, and target BS can be macro base station, and target BS receives Switching request in can have the to be switched downlink transfer information of user equipment so that the downlink transfer of user equipment is by micro- base Station switches to macro base station.

Optionally, downlink transfer information may include following a kind of or any number of combination：At least one E-RAB is identified, extremely A few E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information, wherein radio resource control Contextual information processed may include：Cell-wireless network of downlink radio resource specific configuration information and/or user equipment is interim Identify C-RNTI information.

Under another implement scene, source base station can be macro base station, and target BS can be micro-base station, and target BS connects It can have the to be switched uplink transmission information of user equipment in the switching request of receipts, so that the uplink of user equipment is by macro Base station switches to micro-base station.

Similar, uplink transmission information may include following a kind of or any number of combination：At least one E-RAB is identified, extremely A few E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information, wherein radio resource control Contextual information processed may include：Cell-wireless network of ascending wireless resource specific configuration information and/or user equipment is interim Identify C-RNTI information.

In the present embodiment, target BS can execute admission control after receiving switching request, to determine whether The downlink transfer of user equipment or uplink switch to the first community of target BS offer.If target BS allows user to set Standby downlink transfer or uplink switches to the first community of target BS offer, then target BS can be sent to source base station Handoff response.

As a kind of feasible embodiment, target BS, which determines, allows the downlink transfer of user equipment or uplink to cut It shifts to after the first community of target BS offer, can distribute to be switched downlink transfer corresponding downlink money for user equipment Source configuration information or the corresponding ascending resource configuration information of to be switched uplink.Target BS can be sent to source base The corresponding downlink resource configuration of to be switched downlink transfer that target BS is user equipment distribution is carried in the handoff response stood Information or the corresponding ascending resource configuration information of to be switched uplink.

As another feasible embodiment, source base station can send radio resource allocation request to target BS in advance Message, under the implement scene, target BS can distribute to be switched downlink transfer pair in first community for user equipment The corresponding ascending resource configuration information of downlink resource configuration information or to be switched uplink answered.In the implement scene Under, the switching request that target BS receives source base station transmission is used to indicate whether that uplink and downlink transfer is allowed to separate.

Optionally, it may include following one kind or any that target BS, which is the downlink resource configuration information of user equipment distribution, Kind combination：SRB downstream arrangements information, DRB downstream arrangements information, MAC downstream arrangements information and PDSCH configuration information.

Similar, target BS is that the ascending resource configuration information of user equipment distribution may include following one kind or any Kind combination：SRB uplink configuration information, DRB uplink configuration information, MAC uplink configuration information and PUSCH configuration information.

Switching method provided in an embodiment of the present invention, source base station switch to the uplink of user equipment or downlink transfer Target BS, target BS can permit the uplink of user equipment or downlink transfer switches to target BS, to use The cell serves provided by source base station in the uplink and downlink transfer of family equipment, another is provided by target BS Cell serves, to improve cell throughout and spectrum efficiency.

Fig. 3 is the flow chart of another embodiment of switching method provided by the invention, not with remaining above-mentioned embodiment of the method It is with place, this method can be executed by user equipment, such as Fig. 3, and this method includes：

S301, user equipment receive the switching command that source base station is sent, and have in switching command for user equipment distribution The corresponding downlink resource configuration information of to be switched downlink transfer or the corresponding ascending resource configuration of to be switched uplink Information.

S302, user equipment carry out downlink resource configuration according to downlink resource configuration information, holding and source base station after switching Uplink and via target BS carry out downlink transfer；Or ascending resource is carried out according to ascending resource configuration information and is matched It sets, the downlink transfer between source base station is kept after switching and carries out uplink via target BS.

Wherein, downlink resource configuration information includes the switching type instruction for being used to indicate progress downlink transfer switching, or, on Row resource allocation information includes being used to indicate the switching type instruction for carrying out uplink switching.

Under a kind of implement scene, source base station can be micro-base station, and the current serving cell of user equipment mentions for micro-base station The Microcell of confession, user equipment and Microcell carry out uplink communication and downlink communication.Under the implement scene, source base station can be true It is fixed that the downlink transfer of user equipment is switched to the macrocell that macro base station provides from Microcell, that is, the target BS of switching can be with For macro base station, the Target cell of switching is the first community that macro base station provides.

Under another implement scene, source base station can also be macro base station, and the current serving cell of user equipment is macro base It stands the macrocell provided, user equipment and macrocell carry out uplink communication and downlink communication.Under the implement scene, source base station can The uplink of user equipment is switched to the Microcell that micro-base station provides from macrocell with determination, that is, the target BS of switching It can be micro-base station, the Target cell of switching is the first community that micro-base station provides.

Under a kind of implement scene, user equipment can receive the switching command of source base station transmission, in the switching command With the corresponding downlink resource configuration information of to be switched downlink transfer distributed for user equipment, with indicate user equipment will under Row transmission switches to Target cell.

Under the implement scene, user equipment can carry out downlink resource configuration, specifically according to downlink resource configuration information 's：User equipment can reset the downlink of media access control MAC, rebuild under Packet Data Convergence Protocol PDCP entity Line link rebuilds the downlink of wireless spread-spectrum technology RLC entity, under the downlink transfer and RLC entity that configure PDCP entity Row transmission.Alternatively, user equipment can also reset the downlink of media access control MAC, Packet Data Convergence Protocol is rebuild The downlink of PDCP entity, rebuild wireless spread-spectrum technology RLC entity downlink, configure PDCP entity uplink and The uplink and downlink transfer of downlink transfer and RLC entity.

In the present embodiment, the above-mentioned downstream operation for MAC, RLC and PDCP, can be individually for needing to switch To for the downlink of target BS.After the uplink of user device configuration PDCP entity and RLC entity, it is subsequent such as When fruit will switch the uplink between source base station, it can directly be enabled by the control signaling of MAC entity, without passing through again Cross RLC entity.

Wherein for the downlink of reset MAC, may include：Stop at the timing of all MAC downstream arrangements of operation Device empties all down mixing self-retransmission requests（hybrid automatic repeat request,HARQ）Process （process）Buffer area, each downlink HARQ process is thought the TB received next time be first TB, if there is then Discharge Temporary Cell-radio network temporary identifier（temporary cell-radio network temporary identifier,Temporary C-RNTI）Deng operation.

It, can be according to downlink data transmission reconstruction process for being mapped to wherein for the downlink of reconstruction PDCP entity The DRB of RLC-AM, the DRB and SRB for being mapped to RLC-UM execute corresponding operation respectively.

Wherein for rebuilding the downlink of RLC entity, can be rebuild according to RLC in receive RLCUM entity, RLC AM real The receiving end of body executes corresponding operation respectively.

The downlink of above-mentioned reset MAC, the downlink for rebuilding PDCP entity, the downlink for rebuilding RLC entity Process is suitable for following embodiment.

Optionally, sign can also be carried in the received switching command of user equipment, the sign is used The downlink for carrying to be switched downlink transfer is created in the instruction user equipment and the target BS, and is retained With the uplink between the source base station.So that in the uplink communication in handoff procedure between user equipment and source base station It can continue.

Further, the sign may be used to indicate that the user equipment is created with the target BS for holding The downlink of to be switched downlink transfer is carried, and retains downlink and uplink between the source base station.To Allow in handoff procedure between user equipment and source base station downlink communication and uplink communication continue, reduce industry Business delay or service disconnection.

Optionally, PDCP entity division can be uplink PDCP entity and downlink PDCP entity, uplink by user equipment PDCP entity is corresponding with the second community that source base station provides, and downlink PDCP entity is corresponding with the first community that target BS provides. Similar, RLC entity division can also be uplink RLC entity and downlink RLC entity, uplink RLC entity and source by user equipment The second community that base station provides is corresponding, and downlink RLC entity is corresponding with the first community that target BS provides.Wherein, user equipment Downlink transfer is carried out via first community and target BS, and carries out uplink via second community and source base station.Further For, source base station is micro-base station, and target BS is macro base station.

By the way that PDCP entity uplink and downlink is separated or RLC entity uplink and downlink separates, user equipment is to upper in handoff procedure Row PDCP entity and downlink PDCP entity, uplink RLC entity and downlink RLC entity can be rebuild and configure respectively.Therefore above-mentioned use Family equipment is not needed to entire PDCP entity and RLC volume reconstruction and configuration, can make the uplink not switched or under Row transmission continues to communicate, and improves switching efficiency and flexibility.In the present embodiment, uplink PDCP entity and downlink PDCP are real Body, uplink RLC entity and downlink RLC entity can respectively correspond RLC Unacknowledged Mode（unacknowledged mode）It is upper Row entity and downstream entity.

Optionally, user equipment can not also be uplink PDCP entity and downlink PDCP entity PDCP entity division.Tool For body, user equipment can be corresponding with the second community that source base station provides by the uplink of PDCP entity, by PDCP entity Downlink transfer it is corresponding with the first community that target BS provides.Similar, user equipment can not also be RLC entity division Uplink RLC entity and downlink RLC entity.Specifically, user equipment can provide the uplink of RLC entity with source base station Second community it is corresponding, the downlink transfer of RLC entity is corresponding with the first community that target BS provides.Wherein, user equipment Downlink transfer is carried out via first community and target BS, and carries out uplink via second community and source base station.Further For, source base station is micro-base station, and target BS is macro base station.By individually by the downlink transfer of PDCP entity or RLC entity with Target BS is corresponding, or individually that the uplink of PDCP entity or RLC entity is corresponding with source base station, the user in handoff procedure Equipment equally can rebuild and configure respectively to uplink or downlink transfer, reduce signaling overheads and implementation complexity.

Under another implement scene, user equipment, which receives, can be carried in the switching command that source base station is sent as user The corresponding ascending resource configuration information of to be switched uplink of equipment distribution, to indicate that user equipment switches uplink To Target cell.

Under the implement scene, user equipment can carry out ascending resource configuration according to ascending resource configuration information, specifically 's：User equipment can reset the uplink of MAC, can rebuild the uplink of PDCP entity, can rebuild Radio Link The uplink for controlling RLC entity can configure the uplink of PDCP entity and the uplink of RLC entity, rebuild PDCP The uplink of entity.Alternatively, user equipment can also reset the uplink of MAC, the uplink of PDCP entity can be rebuild, it can To rebuild the uplink of wireless spread-spectrum technology RLC entity, the uplink of PDCP entity is rebuild, configures the uplink of PDCP entity Transmission and downlink transfer, and the uplink and downlink transfer of configuration RLC entity.

Wherein for the uplink of reset MAC, may include：Stop at the timing of all MAC uplinks configuration of operation Device thinks that the time adjusts timer（time alignment timer）The new data of time-out, all ascending HARQ courses of setting Instruction（new data identifier,NDI）For 0, if there is ongoing random access procedure then stop it is ongoing Random access procedure then abandons allocated random access Special leader, such as if there is allocated random access Special leader Fruit has triggered scheduling request process then to cancel triggered scheduling request process, if there is triggered buffer area Status reporting processes then cancel triggered Buffer Status Report process, if there is triggered power headroom reporting (PHR) mistake Cheng Ze cancel triggered power headroom reporting (PHR) process, if there is allocated Temporary Cell-radio network temporary identifier then Discharge Temporary Cell-radio network temporary identifier（Temporary C-RNTI）Deng operation.

Wherein for the uplink of reconstruction PDCP entity, according to transmitting uplink data reconstruction process for being mapped to RLC- The DRB of AM, the DRB and SRB for being mapped to RLC-UM execute corresponding operation respectively.

Wherein for rebuild RLC entity uplink, RLC rebuild in send RLC UM entity, RLC AM entity hair The relevant description of sending end executes corresponding operation respectively.

The uplink of above-mentioned reset MAC, the uplink for rebuilding PDCP entity, the uplink for rebuilding RLC entity Process is suitable for following embodiment.

Optionally, sign can also be carried in the received switching command of user equipment, the sign is used The uplink for carrying to be switched uplink is created in the instruction user equipment and the target BS, and is retained With the downlink between the source base station.So that in the downlink communication in handoff procedure between user equipment and source base station It can continue.

Further, the sign may be used to indicate that the user equipment is created with the target BS for holding The uplink of to be switched uplink is carried, and retains downlink and uplink between the source base station.To Allow in handoff procedure between user equipment and source base station downlink communication and uplink communication continue, reduce industry Business delay or service disconnection.

Optionally, PDCP entity division can also be uplink PDCP entity and downlink PDCP entity, uplink by user equipment PDCP entity is corresponding with the first community that target BS provides, and downlink PDCP entity is corresponding with the second community that source base station provides. Similar, RLC entity division can also be uplink RLC entity and downlink RLC entity, uplink RLC entity and mesh by user equipment It marks the first community that base station provides to correspond to, downlink RLC entity is corresponding with the second community that source base station provides.Wherein, user equipment Uplink is carried out via first community and target BS, and carries out downlink transfer via second community and source base station.Further For, source base station is macro base station, and target BS is micro-base station.Thus to uplink PDCP entity and downlink PDCP in handoff procedure Entity, uplink RLC entity and downlink RLC entity can be rebuild and configure respectively；It does not need to entire PDCP entity and RLC entity Rebuild and configuration, the uplink not switched or downlink transfer can be made to continue to communicate, improve switching efficiency and flexibly Property.

Switching method provided in an embodiment of the present invention, source base station switch to the uplink of user equipment or downlink transfer Target BS, to make the cell serves provided by source base station in the uplink and downlink transfer of user equipment, separately One cell serves provided by target BS, to improve cell throughout and spectrum efficiency.

Fig. 4 is the flow chart of another embodiment of switching method provided by the invention, and such as Fig. 4, the present embodiment is for above-mentioned Embodiment of the method provide source base station be micro-base station, target BS be macro base station implement scene under switching method specific mistake Journey, this method include：

S401, UE send measurement report to micro-base station（measurement report）.

S402, micro-base station according to measurement report determine by the downlink transfer of UE switch to macro base station from micro-base station it is first small Area.

For example, micro-base station can be according to the public reference signal for the first community for including in measurement report（common Reference signal, CRS）Or channel state information reference signals（channel-State information Reference signal, CSI-RS）Reference Signal Received Power（Reference signal receiving power, RSRP）RSRP measurement result of the measurement result greater than the CRS or CSI-RS of the second community of the micro-base station of UE current service, or on When stating the measurement result of first community and being more than certain thresholding, determines and the downlink transfer of UE is switched to the of macro base station from micro-base station One cell.

S403, micro-base station send switching request to macro base station, carry downlink transfer information in the switching request.

Wherein, downlink transfer information may include being used to indicate the switching type instruction for carrying out downlink transfer switching.

Optionally, downlink transfer information can also include following a kind of or any number of combination：At least one E-RAB mark, At least one E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information, wherein radio resource Control contextual information may include downlink radio resource specific configuration information and/or cell-wireless network of user equipment faces When identify C-RNTI information.

It is understood that can also have ascending wireless resource specific configuration information etc. in switching request, it is different herein One enumerates.

S404, macro base station execute wireless admission control（Radio admission control, RAC）Process allows UE Downlink transfer be switched to macro base station offer first community.

Specifically, above-mentioned admission control procedural representation macro base station is confirmed whether to allow to switch.For example, working as the load of macro base station When higher, macro base station can refuse switching request.Above-mentioned admission control process occurs before a random access.If macro base station is refused Switching request absolutely, then source base station needs that other base stations is selected to switch over, random access will not occur in this macro base station.

S405, macro base station are UE allocation of downlink resource in first community.

It is above-mentioned to can be understood as the corresponding frequency range of first community in first community in the present embodiment.Above-mentioned downlink resource can To be interpreted as the corresponding downlink resource of first community.

Specifically, macro base station can distribute C-RNTI for UE, and according to the service quality of each E-RAB（quality of Service, QoS）Parameter configuration downlink resource.Or macro base station can be according to the qos parameter configurating downlink resource of E-RAB and upper Row resource, but downlink resource configuration information can be used only in UE.

Macro base station is that the downlink resource of UE distribution may include following a kind of or any number of combination：SRB downstream arrangements information, DRB downstream arrangements information, MAC downstream arrangements information and PDSCH configuration information.

Wherein, Signaling Radio Bearer（SRB）Downstream arrangements information may include following a kind of or any number of combination：SRB mark Know, RLC downstream arrangements, Logic Channel Identifier configuration information etc..DRB downstream arrangements information may include following a kind of or any number of Combination：The grouping system load identification of evolution, DRB mark, PDCP downstream arrangements, RLC downstream arrangements, Logic Channel Identifier configuration Information etc..Media access control（MAC）Downstream arrangements information may include following a kind of or any number of combination：Discontinuous receive is matched Confidence breath, SCell packet data inactivity timer configuration information etc..

It is understood that the downlink resource that macro base station is UE distribution can also include following a kind of or any number of combination： Channel quality instruction（CQI）Report configuration information, aerial information etc..

In addition, macro base station can be unworthy of setting Physical Uplink Control Channel and Physical Uplink Shared Channel resource, alternatively, macro base Standing can configure but without using Physical Uplink Control Channel and Physical Uplink Shared Channel resource.

S406, macro base station send handoff response to micro-base station, and having macro base station in handoff response is the to be switched of UE distribution The corresponding downlink resource configuration information of downlink transfer.

One of following information or any number of combination can also be carried in handoff response：At least one E-RAB ID, until Few corresponding downlink general packet radio service of an E-RAB（GPRS）Tunnel protocol port（DL GTP tunnel endpoint）, macro base station to micro-base station transparent vessel etc..

Wherein, macro base station includes switching command into micro-base station transparent vessel（Handover command, i.e., comprising movement Control information（mobility Control Info）Radio resource connection reconfiguration set message（RRC connection reconfiguration））The required radio resource parameter for being allocated to UE.

S407, micro-base station send switching command to UE（handover command）, having in the switching command is UE points With the to be switched corresponding downlink resource configuration information of downlink transfer.

Wherein, downlink resource configuration information may include being used to indicate the switching type instruction for carrying out downlink transfer switching.

Optionally, can also have sign in switching command, sign can serve to indicate that user equipment with it is macro Base station creates the downlink for carrying to be switched downlink transfer and retains downlink and uplink between micro-base station Link；Alternatively, sign may be used to indicate that user equipment and macro base station are created for carrying to be switched downlink transfer Downlink and delete and micro-base station between downlink；Alternatively, sign may be used to indicate that user equipment with Macro base station creates the downlink for carrying to be switched downlink transfer and retains the uplink between micro-base station.

S408, micro-base station send downlink grouped data convergence protocol service data unit to macro base station（packet data Convergence protocol service data unit, PDCP SDU）Sequence number（Sequence number, SN） Information and forwarding do not receive the downlink PDCP SDU of rlc layer confirmation.

It wherein, may include the PDCP sequence number of at least one downlink E-RAB in the sequence number information of downlink PDCP SDU Information, macro base station will be to the sequence number that the new PDCPSDU of downlink is distributed after being used to indicate downlink switching.

S409, UE carry out downlink resource configuration according to downlink resource configuration information.

UE carries out downlink resource configuration, and for details, reference can be made to the embodiments of the method for corresponding diagram 3, and details are not described herein.

In the present embodiment, it is synchronous with macro base station in downlink after UE receives switching command.Specific resource distribution process can Referring to the embodiment of the method for corresponding diagram 3, details are not described herein.

As a kind of feasible embodiment, UE resets MAC downlink, rebuilds the downlink of PDCP entity, rebuilds RLC The downlink of entity；Configure the corresponding downlink resource of downlink transfer of the downlink transfer and RLC entity of PDCP entity.

As another feasible embodiment, UE resets MAC downlink, rebuilds the downlink of PDCP entity, rebuilds The downlink of RLC entity；The uplink of configuration PDCP entity and the corresponding downlink resource of downlink transfer and ascending resource, and The uplink of RLC entity and the corresponding downlink resource of downlink transfer and ascending resource.

The sign having in the switching command that micro-base station sends switching command to UE in S407 is used to indicate user Equipment and macro base station create the downlink for carrying to be switched downlink transfer and retain between user equipment and micro-base station Downlink and uplink implement scene under, then UE does not need to reset MAC downlink, keeps existing PDCP real Body downlink and RLC entity carry out downlink transfer, i.e., carry out the PDCP entity of downstream transmission with micro-base station and RLC entity is not required to It re-establishes and reconfigures, it is only necessary to establish and configure the newly-increased PDCP entity between macro base station and RLC entity carries out downlink biography Defeated corresponding downlink resource, and configuration MAC layer downlink transfer parameter.The reconstruction and reconfiguration of above-mentioned PDCP entity and RLC entity It sets the reconstruction for being related to SRB and DRB and reconfigures.The schematic diagram that UE is interacted with source base station and target BS in handoff procedure can be with As shown in Figure 7.

In addition, UE can also carry out the configuration such as Physical Downlink Shared Channel.

Optionally, PDCP entity division can be uplink PDCP entity and downlink PDCP entity, uplink by user equipment PDCP entity is corresponding with the second community that source base station provides, and downlink PDCP entity is corresponding with the first community that target BS provides.

Similar, RLC entity division can also be uplink RLC entity and downlink RLC entity, uplink RLC by user equipment Entity is corresponding with the second community that source base station provides, and downlink RLC entity is corresponding with the first community that target BS provides.

Specifically, as shown in figure 5, the PDCP entity of UE can be separated into uplink PDCP entity and downlink PDCP entity（Point It Dui Yingyu not second community and first community）, the RLC AM entity of UE can be separated into uplink RLC AM entity and downlink RLC AM entity two parts（Correspond respectively to second community and first community）, the RLC UM entity separation of UE is downlink RLC UM entity With uplink RLC UM entity two parts（Correspond respectively to second community and first community）.

It should be noted that UE execute above-mentioned configuration during, uplink PDCP entity, uplink RLC entity without Rebuild and reconfigure, MAC uplink is without the operation such as resetting, therefore, the uplink communication process of UE and micro-base station be able to continue into Row.

Wherein, in no particular order to the execution sequence of S408 and S409, the two can also carry out simultaneously.

S410, UE send radio resource to micro-base station and reconfigure completion（RRC Connection Reconfiguration Complete）Message.

Since uplink is maintained at source base station, UE does not reconfigure completion to target BS transmission radio resource and disappears Breath, but reconfigured to source base station transmission radio resource and complete message.

S411, micro-base station send downlink switching to macro base station and complete.

After handover success, can be determined whether by source base station delete source base station to UE down wireless link.If source base station It deletes source base station and arrives the down wireless link of UE, then the schematic diagram that interacts with source base station and target BS of UE can be with after cell switches As shown in fig. 6, if source base station does not delete source base station to the down wireless link of UE, UE and source base station and target after cell switching The schematic diagram of base station interaction can be as shown in Figure 7.

Switching method provided in this embodiment can be adapted for various heterogeneous network scenes, as shown in figure 8, a kind of implementation field Scape can be：Macrocell provided by macro base station（macro cell）And low power nodes（LPN）The Microcell of offer（pico cell）Hot spot covering.Wherein, Pico cell can configure cell range extension（Cell range extension, CRE）Or Person does not configure CRE, configures CRE hour offset（bias）Configuration can be 6dB or 9dB or higher.The first community that macro base station provides The second community provided from micro-base station can have different Physical Cell Identifier（PCI）Or identical Physical Cell Identifier.It is right It, can be using the interference coordination of enhancing in the UE in macro base station and micro-base station edge（enhanced Inter cell Interference coordination, eICIC）Or CoMP technology reduces interference.For micro-base station central area and micro- base The UE that station has RRC connection to be in RRC connection status moves to reach the CRE model of micro-base station from micro-base station central area to macro base station When enclosing, then micro-base station, which can be determined, is switched to macro base station for the downlink transfer of UE.

Switching method provided in this embodiment can be applicable to the polymerization of heterogeneous network carrier wave（carrier Aggregation, CA）Scene, for example, macro base station and micro-base station provide f1 and f2 two frequencies respectively, in macro base station and micro- base The f2 that the UE that station collectively covers region has polymerize the f1 of macro base station offer and micro-base station provides.Micro-base station can configure CRE in f2 Or CRE is not configured, configure CRE hour offset（bias）Configuration can be 6dB or 9dB or higher.

In addition, it is necessary to the UE for the small area edge that explanation, the macrocell provided for macro base station and micro-base station provide, UE establishes Radio Link in downlink and macrocell, establishes Radio Link in uplink and Microcell, in downlink and macro-cell communication, Uplink and micro-cell communication.It is micro- when removing CRE range if UE is mobile to macro base station and enter the only coverage area of macro base station The uplink of UE can be switched to macro base station by base station, so that the uplink and downlink of UE are communicated with macro base station.Source base Standing is micro-base station, and the target BS of switching is macro base station, and downlink PDCP entity and uplink PDCP entity can be merged into one by UE A two-way PDCP entity, it is also possible to which downlink RLC AM entity and uplink RLC AM entity are merged into a two-way RLC AM Entity.The process that the uplink of UE is switched to macro base station is similar with the process of S401-S411, and details are not described herein.

Switching method provided in an embodiment of the present invention, source base station switch to the uplink of user equipment or downlink transfer Target BS, to make the cell serves provided by source base station in the uplink and downlink transfer of user equipment, separately One cell serves provided by target BS may be implemented user equipment with lower power and send upper line number to micro-base station According to, and macro base station can with stronger transmission power to user equipment send downlink data, thus improve cell throughout and Spectrum efficiency.

Fig. 9 is the flow chart of another embodiment of switching method provided by the invention, such as Fig. 9, relative to above-mentioned each method For embodiment, present embodiments providing source base station is macro base station, and target BS is switching method under the implement scene of micro-base station Detailed process, this method includes：

S901, UE send measurement report to macro base station（measurement report）.

S902, macro base station according to measurement report determine by the uplink of UE be switched to micro-base station from macro base station it is first small Area.

For example, macro base station can be according to the downlink path loss of the CRS or CSI-RS of micro-base station（downlink pathloss）Measurement result is greater than the downlink path loss of the CRS or CSI-RS of macro base station（downlink pathloss）Measurement knot The downlink path loss of the CRS or CSI-RS of fruit or micro-base station（downlink pathloss）Measurement result is more than certain thresholding, really The fixed uplink by UE switches to the first community of micro-base station from micro-base station；The power headroom that macro base station can be reported according to UE Report（Power headroom, PHR）Either the uplink path loss measurement of UE or detection reference signal（sounding Reference signal, SRS）The modes such as measurement estimate the downlink path loss of UE.

S903, macro base station send switching request to micro-base station, have uplink transmission information in the switching request.

Wherein, uplink transmission information may include being used to indicate the switching type instruction for carrying out uplink switching.

Optionally, uplink transmission information can also include following a kind of or any number of combination：At least one E-RAB mark, At least one E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information, wherein radio resource Control contextual information may include：Cell-wireless network of ascending wireless resource specific configuration information and/or user equipment faces When identify C-RNTI information.

It is understood that can also have downlink radio resource specific configuration information etc. in switching request, it is different herein One enumerates.

S904, micro-base station execute admission control process, allow for the uplink of UE to be switched to the first community of micro-base station.

S905, micro-base station are that UE distributes ascending resource in first community.

Specifically, micro-base station can distribute C-RNTI for UE, and according to the qos parameter collocating uplink resource of each E-RAB.Or Person's micro-base station can be according to the qos parameter configurating downlink resource and ascending resource of E-RAB, but UE can match using only ascending resource Confidence breath.

Micro-base station is that the ascending resource of UE distribution may include following a kind of or any number of combination：SRB uplink configuration information, DRB uplink configuration information, MAC uplink configuration information and PDSCH configuration information.

Wherein, Signaling Radio Bearer（SRB）Uplink configuration information may include following a kind of or any number of combination：SRB mark Know, the configuration of RLC uplink, Logic Channel Identifier, logic channel uplink configuration information etc..DRB uplink configuration information may include with Lower a kind of or any number of combination：The grouping system load identification of evolution, DRB mark, the configuration of PDCP uplink, the configuration of RLC uplink are patrolled Collect channel logo, logic channel uplink configuration information etc..MAC uplink configuration information may include following one kind or any number of group It closes：Uplink shares transmission channel（UL-SCH）Configuration information, time adjust timer configuration information, and power headroom reporting (PHR) matches confidence Breath etc..

It is understood that the ascending resource that micro-base station is UE distribution can also include following a kind of or any number of combination： Ascending physical signal shares channel, ascending physical signal control channel, uplink power control parameter, detection reference signal parameter（SRS）, antenna Information etc..

In addition, micro-base station can be unworthy of setting Physical Downlink Control Channel and Physical Downlink Shared Channel resource, alternatively, micro- base Standing can configure but without using Physical Downlink Control Channel and Physical Downlink Shared Channel resource.

S906, micro-base station send handoff response to macro base station, and having micro-base station in handoff response is the to be switched of UE distribution The corresponding ascending resource configuration information of uplink.

One of following information or any number of combination can also be carried in switching response message：At least one E-RAB The corresponding uplink general packet radio service of ID, at least one E-RAB（GPRS）Tunnel protocol port（UL GTP tunnel endpoint）, micro-base station to macro base station transparent vessel（transparent container）Deng.

Wherein, micro-base station includes switching command to macro base station transparent vessel（handover command）, for example, mobile control It includes to need to configure to the radio resource parameter of UE that the radio resource connection reconfiguration of information processed, which sets message,.

S907, macro base station send switching command to UE（handover command）, there is in the switching command micro-base station For the corresponding ascending resource configuration information of to be switched uplink of UE distribution.

Wherein, ascending resource configuration information may include being used to indicate the switching type instruction for carrying out uplink switching.

Optionally, can also carry sign in switching command, sign can serve to indicate that user equipment with it is micro- Base station creates the uplink for carrying to be switched uplink and retains the uplink between user equipment and macro base station Road and downlink；Alternatively, sign may be used to indicate that user equipment and macro base station create it is to be switched for carrying The uplink of uplink simultaneously deletes the uplink between user equipment and micro-base station；Alternatively, sign can also be used In instruction user equipment and micro-base station create the uplink for carrying to be switched uplink and retain with macro base station it Between downlink.

S908, macro base station send the sequence number of uplink PDCP SDU to micro-base station（SN）What information and forwarding were successfully received Uplink PDCP SDU.

Wherein, the sequence number information of uplink PDCP SDU may include the sequence of the uplink PDCP SDU of first loss Number.

S909, UE carry out ascending resource configuration according to ascending resource configuration information.

UE carries out ascending resource configuration for details, reference can be made to the description of Fig. 3 embodiment, and details are not described herein.

Specifically：It is synchronous with micro-base station in uplink after UE receives switching command.For example, random access mistake can be passed through Journey or micro-base station send uplink timing advance value directly to UE and realize synchronization.

As a kind of feasible embodiment, UE resets MAC uplink, rebuilds the uplink of PDCP entity, rebuilds RLC The uplink of entity；Configure the corresponding ascending resource of uplink of the uplink and RLC entity of PDCP entity.

As another feasible embodiment, UE resets MAC uplink, rebuilds the uplink of PDCP entity, rebuilds The uplink of RLC entity；The uplink of configuration PDCP entity and the corresponding ascending resource of downlink transfer and downlink resource, and The uplink of RLC entity and the corresponding ascending resource of downlink transfer and downlink resource.

The sign carried in the switching command that macro base station sends switching command to UE in S907 is used to indicate user Equipment and micro-base station create the uplink for carrying to be switched uplink, and retain between user equipment and macro base station Downlink and uplink implement scene under, UE does not need the SRB's resetted to MAC uplink, originally and DRB PDCP entity uplink and RLC entity uplink, i.e., with macro base station carry out downstream transmission SRB and DRB PDCP entity uplink and RLC entity uplink does not need to re-establish and reconfigure, it is only necessary to establish and configure the PDCP entity and RLC of newly-increased SRB and DRB The corresponding ascending resource of entity uplink configures MAC layer uplink transmission parameter.UE and source base station and target base in handoff procedure Standing interactive schematic diagram can be as shown in figure 11.

In addition, UE can also carry out the configuration such as Physical Uplink Shared Channel.

Optionally, PDCP entity division can be uplink PDCP entity and downlink PDCP entity, downlink by user equipment PDCP entity is corresponding with the second community that source base station provides, and uplink PDCP entity is corresponding with the first community that target BS provides.

Similar, RLC entity division can also be uplink RLC entity and downlink RLC entity, downlink RLC by user equipment Entity is corresponding with the second community that source base station provides, and uplink RLC entity is corresponding with the first community that target BS provides.It needs It is bright, during UE executes above-mentioned configuration, since downlink PDCP entity, downlink RLC entity are without rebuilding and being reconfigured It sets, MAC downlink is without the operation such as reset, and therefore, the downlink communication process between UE and micro-base station is continued.

Wherein, in no particular order to the execution sequence of S908 and S909, the two can also carry out simultaneously.

S910, UE send radio resource to micro-base station and reconfigure completion（RRC connection reconfiguration complete）Message.

Since uplink is switched to target BS, UE reconfigures completion to target BS transmission radio resource and disappears Breath.

S911, macro base station send uplink switching to micro-base station and complete.

Switching method provided in this embodiment is equally applicable to various heterogeneous network scenes, provides with embodiment shown in Fig. 4 Heterogeneous network scene it is similar, details are not described herein.

It should be noted that user equipment is in RRC connection status in above-described embodiment that Fig. 1-Fig. 9 is provided（RRC_ connected）, there is RRC connection with source base station before the handover.Alternatively, user equipment may be at idle state（RRC_idle）, Under this implement scene, user equipment can an initiation random access request into macro base station and micro-base station, with it is macro Base station or micro-base station establish RRC connection.The macrocell provided for being located at macro base station（macro cell）It is provided with micro-base station Microcell（pico cell）Edge and the UE for being in RRC_Idle state, UE can choose macrocell or pico cell and hold Row random access procedure enters RRC_Connected state.If UE first accesses macro base station, the macro base station as source base station can The uplink of UE is switched to micro-base station according to the determination of the measurement report of UE, that is, execute the switching of embodiment illustrated in fig. 9 Journey.If UE first accesses micro-base station, the micro-base station as source base station can be determined according to the measurement report of UE by the downlink of UE Transmission is switched to macro base station, that is, executes the handoff procedure of embodiment illustrated in fig. 4.

In addition, it is necessary to the UE for the small area edge that explanation, the macrocell provided for macro base station and micro-base station provide, UE establishes Radio Link in downlink and macrocell, establishes Radio Link in uplink and Microcell, in downlink and macro-cell communication, Uplink and micro-cell communication.It is macro when removing CRE range if UE is mobile to micro-base station and enter the only coverage area of micro-base station The downlink transfer of UE can be switched to micro-base station by base station, so that the uplink and downlink of UE are communicated with micro-base station.Source base Standing is macro base station, and the target BS of switching is micro-base station, and downlink PDCP entity and uplink PDCP entity can be merged into one by UE A two-way PDCP entity, it is also possible to which downlink RLC AM entity and uplink RLC AM entity are merged into a two-way RLC AM Entity.The process that the downlink transfer of UE is switched to micro-base station is similar with the process of S901-S911, and details are not described herein.

After handover success, can be determined whether by source base station delete source base station to UE uplink radio link.If source base station It deletes source base station and arrives the uplink radio link of UE, then the schematic diagram that interacts with source base station and target BS of UE can be with after cell switches As shown in Figure 10, if source base station does not delete source base station to the uplink radio link of UE, UE and source base station and mesh after cell switching The schematic diagram for marking base station interaction can be as shown in figure 11.

It is small with micro-base station offer in the macrocell that macro base station provides for being located in Fig. 4 and embodiment illustrated in fig. 9 The UE of area edge, UE establish Radio Link in downlink and macrocell, establish Radio Link in uplink and Microcell, downlink with it is macro Cell communication, under uplink and the implement scene of micro-cell communication, the DRB of user equipment can pass through macro base station and micro- base respectively It stands and is carried on the S1-U interface of core net SGW with S1（S1bearer）Establish mapping relations, the radio access bearer of evolution E-RAB is the carrying between UE and SGW, including between the Data Radio Bearer DRB between UE and base station and base station and SGW Two sections of S1bearer, DRB and S1bearer are corresponded, so that the data link between UE and SGW is established, such as Figure 12 institute Show.The process for establishing mapping is briefly described below：Mobile management entity（mobility management entity,MME）With ENB establishes E-RAB when establishing S1 interface, includes E-RAB identification information；When eNB is that UE configures radio resource, increasing DRB's It is identified in information comprising E-RAB, DRB mark is distributed for DRB, to establish mapping relations between DRB and S1bearer.Or Person, can also by one in macro base station and micro-base station as acting on behalf of, on the S1-U interface of core net SGW with S1bearer establishes mapping relations, and macro base station establishes above-mentioned mapping by interacting E-RAB mark and DRB identification information with micro-base station Relationship, as shown in figure 13.

Figure 14 is the structural schematic diagram of base station one embodiment provided by the invention, which can execute of the invention any The method of embodiment, the base station are, for example, source base station or other similar have the equipment across station coordination function；Such as Figure 14 institute Show, which includes：Determination unit 11 and transmission unit 12；

The downlink transfer of user equipment is switched to first community or by user equipment for determining by determination unit 11 Uplink switches to first community；

Transmission unit 12, for sending switching request to the corresponding target BS of first community, switching request has user The to be switched downlink transfer information of equipment or uplink transmission information；

Transmission unit 12 is also used to, and sends switching command to user equipment, switching command has for user equipment distribution The corresponding downlink resource configuration information of to be switched downlink transfer or the corresponding ascending resource configuration of to be switched uplink Information, so that user equipment keeps the uplink with base station and carries out downlink transfer, or switching via target BS after switching User equipment keeps the downlink transfer between base station and carries out uplink via target BS afterwards；

Optionally, determination unit 11 can be specifically used for：When base station is micro-base station, and target BS is macro base station, determine The downlink transfer of user equipment is switched to and provides the first community of service by macro base station；Alternatively, when base station is macro base station, target When base station is micro-base station, determining switch to the uplink of user equipment provides the first community of service by micro-base station.

Optionally, it when base station is micro-base station, and target BS is macro base station, is set before first community covering switching to user The standby corresponding cell in base station for providing service or macro base station have overlapping with the frequency that micro-base station provides；

When base station is macro base station, and target BS is micro-base station, the base station pair of service is provided to user equipment before switching The MPS process first community or macro base station answered have overlapping with the frequency that micro-base station provides.

Optionally, transmission unit 12 can be also used for：Radio resource allocation request message is sent to target BS, distribution is asked Ask message for target BS in first community for user equipment distribute the corresponding downlink resource of to be switched downlink transfer or The corresponding ascending resource of the to be switched uplink of person.

Optionally, transmission unit 12 can be also used for：Media access control layer control unit MAC is sent to user equipment CE, MAC CE are used to indicate whether that uplink and downlink transfer is allowed to separate.

Optionally, downlink transfer information further includes following a kind of or any number of combination：The wireless access of at least one evolution Carry E-RAB mark, at least one E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks context letter Breath；Wherein, wireless heterogeneous networks contextual information includes：Downlink radio resource specific configuration information and/or user terminal it is small Area-radio network temporary identifier C-RNTI information；

Uplink transmission information includes following a kind of or any number of combination：At least one E-RAB mark, at least one E-RAB Identify corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, wireless heterogeneous networks context is believed Breath includes：The C-RNTI information of ascending wireless resource specific configuration information and/or user terminal.

Optionally, the downlink resource configuration information for user equipment distribution includes following a kind of or any number of combination：Signaling Radio bearer SRB downstream arrangements information, Data Radio Bearer DRB downstream arrangements information, media access control MAC downstream arrangements letter Breath, Physical Downlink Shared Channel PDSCH configuration information；

Ascending resource configuration information for user equipment distribution includes following a kind of or any number of combination：The configuration of SRB uplink Information, DRB uplink configuration information, MAC uplink configuration information, PUSCH configuration information.

It optionally, further include sign in switching command；It is new with target BS that sign is used to indicate user equipment It builds the downlink for carrying to be switched downlink transfer and retains the uplink between base station；Or,

Sign is used to indicate user equipment and target BS creates the uplink for carrying to be switched uplink Link simultaneously retains the downlink between base station；Or,

Sign is used to indicate user equipment and target BS creates the downlink for carrying to be switched downlink transfer Link creates uplink for carrying to be switched uplink, and retains the uplink and downlink between base station Link.

Base station provided in this embodiment is the execution equipment of switching method provided by the invention, executes switching method Detailed process can be found in the associated description in the corresponding embodiment of the method for Fig. 1-Figure 13, repeat no more.

Base station provided in this embodiment is source base station, according to the measurement report of user equipment to report, by the upper of user equipment Row transmission or downlink transfer switch to target BS, thus make one in the uplink and downlink transfer of user equipment by source The cell server that base station provides, another cell serves provided by target BS.For example, it may be user equipment is with lower Power send upstream data to micro-base station, and macro base station can send lower line number to user equipment with stronger transmission power According to.For another example, when UE is closer apart from micro- station center, micro-base station sends downlink data, Yong Hushe to user equipment with lower-wattage It is standby that upstream data is sent to macro base station with higher-wattage.It is thus possible to reduce interference of the base station to UE, handle up to improve cell Amount and spectrum efficiency.

Present embodiments provide it is a kind of the uplink of user equipment or downlink transfer are switched into target BS, to use The method that the uplink and downlink of family equipment are communicated from different base stations, this method are suitable for existing carrier type and new load Wave type（New carrier type, NCT）, new carrier type can send or not send primary synchronization signal/secondary synchronization signal Deng the Physical Downlink Control Channel of enhancing can be sent on NCT（E-PDCCH）Either by other carrier waves by PDCCH or E-PDCCH carries out cross scheduling.

Figure 15 is the structural schematic diagram of another embodiment of base station provided by the invention, which can execute the present invention and appoint The method for embodiment of anticipating, the base station are, for example, target BS or other similar have the equipment across station coordination function；Such as figure Shown in 15, which includes：Receiving unit 21, determination unit 22 and transmission unit 23；

Receiving unit 21, for receiving the switching request message of source base station transmission, switching request has user equipment to be cut The downlink transfer information or uplink transmission information changed；

Determination unit 22, for determining allow the downlink transfer of user equipment or uplink to switch to that base station provides the One cell；

Transmission unit 23, for sending the corresponding downlink of to be switched downlink transfer distributed for user equipment to source base station Resource allocation information or the corresponding ascending resource configuration information of to be switched uplink, so that user equipment is kept after switching Uplink with source base station and carry out downlink transfer via base station, or so as to after switching user equipment keep between source base station Downlink transfer and via base station carry out uplink；

Optionally, when source base station is micro-base station, and base station is macro base station, to user equipment before first community covering switching The corresponding cell of source base station or macro base station for providing service have overlapping with the frequency that micro-base station provides；

When source base station is macro base station, and base station is micro-base station, the source base station pair of service is provided to user equipment before switching The MPS process first community or macro base station answered have overlapping with the frequency that micro-base station provides.

Optionally, receiving unit 21 can be also used for receiving the radio resource allocation request message that source base station is sent, wirelessly Resource allocation request message distributes to be switched downlink transfer corresponding downlink in first community for base station for user equipment Resource or the corresponding ascending resource of to be switched uplink.

Optionally, downlink transfer information further includes following a kind of or any number of combination：The wireless access of at least one evolution Carry E-RAB mark, at least one E-RAB identifies corresponding E-RAB QoS parameter, wireless heterogeneous networks context letter Breath；Wherein, wireless heterogeneous networks contextual information includes：Downlink radio resource specific configuration information and/or user equipment it is small Area-radio network temporary identifier C-RNTI information；

Uplink transmission information includes following a kind of or any number of combination：At least one E-RAB mark, at least one E-RAB Identify corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, wireless heterogeneous networks context is believed Breath includes：The C-RNTI information of ascending wireless resource specific configuration information and/or user equipment.

Base station provided in this embodiment is the execution equipment of switching method provided by the invention, executes switching method Detailed process can be found in the associated description in the corresponding embodiment of the method for Fig. 1-Figure 13, repeat no more again.

Base station provided in this embodiment is target BS, and source base station is according to the measurement report of user equipment to report, by user The uplink of equipment or downlink transfer switch to target BS, target BS can permit user equipment uplink or under Row transmission switches to target BS, to make one in the uplink and downlink transfer of user equipment to be provided by source base station Cell serves, another cell serves provided by target BS, to improve cell throughout and spectrum efficiency.

Figure 16 is the structural schematic diagram of user equipment one embodiment provided by the invention, and as shown in figure 16, which sets It is standby to include：Receiving unit 31 and configuration unit 32；

Receiving unit 31, for receiving the switching command of source base station transmission, switching command has for user equipment distribution The corresponding downlink resource configuration information of to be switched downlink transfer or the corresponding ascending resource configuration of to be switched uplink Information；

Configuration unit 32 is kept and source base after switching for carrying out downlink resource configuration according to downlink resource configuration information The uplink stood and downlink transfer is carried out via target BS；Or ascending resource is carried out according to ascending resource configuration information and is matched It sets, the downlink transfer between source base station is kept after switching and carries out uplink via target BS；

It optionally, further include sign in switching command；It is new with target BS that sign is used to indicate user equipment It builds the downlink for carrying to be switched downlink transfer and retains the uplink between source base station；Or

Sign is used to indicate user equipment and target BS creates the uplink for carrying to be switched uplink Link simultaneously retains the downlink between source base station；Or,

Sign is used to indicate user equipment and target BS creates the downlink for carrying to be switched downlink transfer Link creates uplink for carrying to be switched uplink, and retain the uplink between source base station and under Line link.

Optionally, which further includes division unit 33, is used for：By PDCP entity division be uplink PDCP entity and Downlink PDCP entity, uplink PDCP entity is corresponding with the second community that source base station provides, and downlink PDCP entity is mentioned with target BS The first community of confession is corresponding；It is uplink RLC entity and downlink RLC entity, uplink RLC entity and source base station by RLC entity division The second community of offer is corresponding, and downlink RLC entity is corresponding with the first community that target BS provides；

Wherein, user equipment carries out downlink transfer via first community and target BS, and via second community and source base It stands and carries out uplink.

Optionally, source base station is micro-base station, and target BS is macro base station.

Optionally, the division unit 33, is also used to：It is that uplink PDCP entity and downlink PDCP are real by PDCP entity division Body, uplink PDCP entity is corresponding with the first community that target BS provides, and downlink PDCP entity and source base station provide second small Area is corresponding；

Be uplink RLC entity and downlink RLC entity by RLC entity division, uplink RLC entity and target BS provide the One cell is corresponding, and downlink RLC entity is corresponding with the second community that source base station provides；

Wherein, user equipment carries out uplink via first community and target BS, and via second community and source base It stands and carries out downlink transfer.

Optionally, source base station is macro base station, and target BS is micro-base station.

User equipment provided in this embodiment is the execution equipment of switching method provided by the invention, executes switching side The detailed process of method can be found in the associated description in the corresponding embodiment of the method for Fig. 1-Figure 13, repeat no more again.

User equipment provided in this embodiment, source base station is according to the measurement report of user equipment to report, by user equipment Uplink or downlink transfer switch to target BS, thus make one in the uplink and downlink transfer of user equipment by The cell serves that source base station provides, another cell serves provided by target BS, to improve cell throughout and frequency spectrum Efficiency.

Figure 17 is the structural schematic diagram of another embodiment of base station provided by the invention, which can execute the present invention and appoint The method for embodiment of anticipating, the base station are, for example, source base station or other similar have the equipment across station coordination function；Such as Figure 17 Shown, which includes：Processor 41 and transmitter 42；

The downlink transfer of user equipment is switched to first community or by user equipment for determining by processor 41 Row transmission switches to first community；

Transmitter 42, for sending switching request to the corresponding target BS of first community, switching request is set with user Standby to be switched downlink transfer information or uplink transmission information；

Transmitter 42 is also used to, to user equipment send switching command, switching command have for user equipment distribution to The corresponding downlink resource configuration information of the downlink transfer of switching or the corresponding ascending resource of to be switched uplink match confidence Breath, after user equipment keeps the uplink with base station and carries out downlink transfer, or switching via target BS after switching User equipment keeps the downlink transfer between base station and carries out uplink via target BS；

Optionally, processor 41 can be specifically used for：When base station is micro-base station, and target BS is macro base station, determining will The downlink transfer of user equipment, which is switched to, provides the first community of service by macro base station；Alternatively, when base station is macro base station, target base When standing as micro-base station, determines to switch to the uplink of user equipment and provides the first community of service by micro-base station.

Optionally, transmitter 42 can be also used for：Radio resource allocation request message, distribution request are sent to target BS Message for target BS in first community for user equipment distribute the corresponding downlink resource of to be switched downlink transfer or The corresponding ascending resource of to be switched uplink.

Optionally, transmitter 42 can be also used for：Media access control layer control unit MAC CE is sent to user equipment, MAC CE is used to indicate whether that uplink and downlink transfer is allowed to separate.

It optionally, further include sign in switching command；It is new with target BS that sign is used to indicate user equipment It builds the downlink for carrying to be switched downlink transfer and retains the uplink between base station；Or

Base station provided in this embodiment is source base station, according to the measurement report of user equipment to report, by the upper of user equipment Row transmission or downlink transfer switch to target BS, thus make one in the uplink and downlink transfer of user equipment by source The cell server that base station provides, another cell serves provided by target BS, to improve cell throughout and frequency spectrum Efficiency.Present embodiments provide it is a kind of the uplink of user equipment or downlink transfer are switched into target BS so that user The method that the uplink and downlink of equipment are communicated from different base stations, this method are suitable for existing carrier type and new carrier wave Type（New Carrier Type, NCT）, new carrier type can send or not send primary synchronization signal/secondary synchronization signal etc., The Physical Downlink Control Channel of enhancing can be sent on NCT（E-PDCCH）Either pass through PDCCH or E- by other carrier waves PDCCH carries out cross scheduling.

Figure 18 is the structural schematic diagram of another embodiment of base station provided by the invention, which can execute the present invention and appoint The method for embodiment of anticipating, the base station are, for example, target BS or other similar have the equipment across station coordination function；Such as figure Shown in 18, which includes：Receiver 51, processor 52 and transmitter 53；

Receiver 51, for receiving the switching request message of source base station transmission, switching request has user equipment to be switched Downlink transfer information or uplink transmission information；

Processor 52, for determining allow the downlink transfer of user equipment or uplink to switch to base station offer first Cell；

Transmitter 53 is that the corresponding downlink of to be switched downlink transfer that user equipment distributes provides for sending to source base station Source configuration information or the corresponding ascending resource configuration information of to be switched uplink, so as to after switching user equipment keep with The uplink of source base station and carry out downlink transfer via base station, or so as to after switching user equipment keep between source base station under Row transmits and carries out uplink via base station；

Optionally, receiver 51 can be also used for：The radio resource allocation request message that source base station is sent is received, it is wireless to provide Source allocation request message distributes to be switched downlink transfer corresponding downlink money in first community for base station for user equipment Source or the corresponding ascending resource of to be switched uplink.

Figure 19 is the structural schematic diagram of another embodiment of user equipment provided by the invention, as shown in figure 19, the user If including：Receiver 61 and processor 62；

Receiver 61, for receive source base station transmission switching command, switching command have for user equipment distribution to The corresponding downlink resource configuration information of the downlink transfer of switching or the corresponding ascending resource of to be switched uplink match confidence Breath；

Processor 62, for carrying out downlink resource configuration according to downlink resource configuration information, holding and source base station after switching Uplink and via target BS carry out downlink transfer；Or ascending resource configuration is carried out according to ascending resource configuration information, The downlink transfer between source base station is kept after switching and carries out uplink via target BS；

Optionally, processor 62 can be also used for：By PDCP entity division be uplink PDCP entity and downlink PDCP entity, Uplink PDCP entity is corresponding with the second community that source base station provides, the first community pair that downlink PDCP entity and target BS provide It answers；RLC entity division is uplink RLC entity and downlink RLC entity by user equipment, and uplink RLC entity is provided with source base station Second community is corresponding, and downlink RLC entity is corresponding with the first community that target BS provides；

Optionally, processor 62 can be also used for：By PDCP entity division be uplink PDCP entity and downlink PDCP entity, Uplink PDCP entity is corresponding with the first community that target BS provides, the second community pair that downlink PDCP entity and source base station provide It answers；

Figure 20 is the structural schematic diagram of one embodiment of communication system provided by the invention, as shown in figure 20, the communication System includes：

Source base station 71 in above-mentioned any embodiment；With

Target BS 72 in above-mentioned any embodiment.

The movement that above-mentioned source base station is realized can refer in above method embodiment or Installation practice performed by source base station Movement, the movement that above-mentioned target BS is realized can refer to target BS in above method embodiment or Installation practice and held Capable movement, details are not described herein.

In communication system provided in this embodiment, the uplink of user equipment or downlink transfer are switched to mesh by source base station Base station is marked, target BS can permit the uplink of user equipment or downlink transfer switches to target BS, to make user The uplink and downlink of equipment are communicated from different base stations respectively, to improve handling capacity and spectrum efficiency.

It is apparent to those skilled in the art that for convenience and simplicity of description, only with above-mentioned each function The division progress of unit can according to need and for example, in practical application by above-mentioned function distribution by different function lists Member is completed, i.e., the internal structure of device is divided into different functional units, to complete all or part of function described above Energy.The specific work process of the system, apparatus, and unit of foregoing description, can be with reference to corresponding in preceding method embodiment Journey, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed system, device and method can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit or The division of unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units Or component can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute Display or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit Indirect coupling or communication connection can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer Equipment（It can be personal computer, server or the network equipment etc.）Or processor（processor）It is each to execute the application The all or part of the steps of embodiment the method.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory （ROM, read-only memory）, random access memory（RAM, random access memory）, magnetic or disk Etc. the various media that can store program code.

The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before Embodiment is stated the application is described in detail, those skilled in the art should understand that：It still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.

Claims

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

Source base station, which is determined, switches to first community for the uplink of user equipment；

The source base station sends switching request to the corresponding target BS of the first community, and the switching request has the use The to be switched uplink transmission information of family equipment；

The source base station sends switching command to the user equipment, and the switching command has for user equipment distribution The corresponding ascending resource configuration information of to be switched uplink, so that the user equipment described after switching is kept and the source base station Between downlink transfer and carry out the uplink via the target BS；

Wherein, the uplink transmission information and the ascending resource configuration information include being used to indicate to carry out uplink switching Switching type instruction.

2. according to the method described in claim 1, it is characterized in that：

The source base station, which is determined, switches to first community for the uplink of the user equipment, specifically includes：

When the source base station is macro base station, and the target BS is micro-base station, the macro base station is determined the user equipment Uplink switch to by the micro-base station provide service the first community.

3. method according to claim 1 or 2, it is characterised in that：

The covering model of first community cell corresponding with the source base station for providing service to the user equipment before switching It is with overlapping；Or,

The target BS has overlapping with the frequency of the source base station.

4. method according to claim 1 or 2, which is characterized in that the source base station is sent to the target BS to be switched Before request message, further include：

The source base station sends radio resource allocation request message to the target BS, and the allocation request message is for described Target BS is that the user equipment distributes to be switched uplink corresponding ascending resource in the first community.

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

The source base station sends media access control layer control unit MAC CE to the user equipment, and the MAC CE is for referring to Whether show allows uplink and downlink transfer to separate.

6. method according to claim 1 or 2, it is characterised in that：

The uplink transmission information includes following a kind of or any number of combination：The radio access bearer E-RAB of at least one evolution Mark, at least one described E-RAB identify corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Its In, the wireless heterogeneous networks contextual information includes：Ascending wireless resource specific configuration information and/or the user equipment Cell-radio network temporary identifier C-RNTI information.

7. method according to claim 1 or 2, it is characterised in that：

The ascending resource configuration information for user equipment distribution includes following a kind of or any number of combination：Signaling is wireless Carry SRB uplink configuration information, Data Radio Bearer DRB uplink configuration information, media access control MAC uplink configuration information, Physical Downlink Shared Channel PUSCH configuration information.

8. method according to claim 1 or 2, it is characterised in that：

It further include sign in the switching command；

The sign be used to indicate the user equipment and the target BS create it is described to be switched for carrying The uplink of row transmission simultaneously retains the downlink between the source base station；Or,

The sign be used to indicate the user equipment and the target BS create it is described to be switched for carrying The uplink of row transmission, and retain uplink and downlink between the source base station.

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

Target BS receives the switching request that source base station is sent, the uplink that the switching request has user equipment to be switched Information；

The target BS determines that allow the uplink of the user equipment to switch to the target BS offer first is small Area；

The target BS to the source base station send be the user equipment distribute to be switched uplink it is corresponding on Row resource allocation information, so that the user equipment described after switching is kept the downlink transfer between the source base station and via the mesh It marks base station and carries out the uplink；

Wherein, the uplink transmission information includes being used to indicate the switching type instruction for carrying out uplink switching.

10. according to the method described in claim 9, it is characterized in that,

The target BS determines that allow the uplink of the user equipment to switch to the target BS offer first is small Area specifically includes：

When the source base station is macro base station, and the target BS is micro-base station, the target BS, which determines, allows the user The uplink of equipment switches to the first community that the target BS provides.

11. method according to claim 9 or 10, which is characterized in that the target BS receives cutting for source base station transmission It changes before request, further includes：

The target BS receives the radio resource allocation request message that the source base station is sent, the radio resource allocation request It is corresponding that message for the target BS is that the user equipment distributes to be switched uplink in the first community Ascending resource.

12. method according to claim 9 or 10, which is characterized in that the uplink transmission information include it is following a kind of or Any number of combination：The radio access bearer E-RAB mark of at least one evolution, at least one described E-RAB identify corresponding E- RAB QoS parameter, wireless heterogeneous networks contextual information；Wherein, the wireless heterogeneous networks contextual information includes：On The cell of row radio resource specific configuration information and/or the user equipment-radio network temporary identifier C-RNTI information.

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

User equipment receives the switching command that source base station is sent, and the switching command has for the to be cut of user equipment distribution The corresponding ascending resource configuration information of the uplink changed；

The user equipment carries out ascending resource configuration according to the ascending resource configuration information, keeps and the source base after switching Downlink transfer between standing and the uplink is carried out via target BS；The target BS is described in the source base station determines The corresponding base station of the first community that the uplink of user equipment is switched to；

Wherein, the ascending resource configuration information includes being used to indicate the switching type instruction for carrying out uplink switching.

14. according to the method for claim 13, it is characterised in that：In the received switching command of user equipment also Including sign；

15. method described in 3 or 14 according to claim 1, which is characterized in that further include：

The user equipment by PDCP entity division be uplink PDCP entity and downlink PDCP entity, the uplink PDCP entity with The first community that the target BS provides is corresponding, the second community pair that the downlink PDCP entity and the source base station provide It answers；

The user equipment by RLC entity division be uplink RLC entity and downlink RLC entity, the uplink RLC entity with it is described The first community that target BS provides is corresponding, and the downlink RLC entity is corresponding with the second community that the source base station provides；

Wherein, the user equipment carries out the uplink via the first community and the target BS, and via institute It states second community and the source base station carries out the downlink transfer.

16. according to the method for claim 15, it is characterised in that：

The source base station is macro base station, and the target BS is micro-base station.

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

The uplink of user equipment is switched to first community for determining by determination unit；

Transmission unit, for sending switching request to the corresponding target BS of the first community, the switching request has institute State the to be switched uplink transmission information of user equipment；

The transmission unit is also used to, and sends switching command to the user equipment, it is the user that the switching command, which has, The corresponding ascending resource configuration information of to be switched uplink of equipment distribution, so as to the user equipment described after switching keep with Downlink transfer between the base station and the uplink is carried out via the target BS；

18. base station according to claim 17, which is characterized in that the determination unit is specifically used for：

When the base station is macro base station, and the target BS is micro-base station, the uplink of the user equipment is cut in determination It shifts to and provides the first community of service by the micro-base station.

19. base station described in 7 or 18 according to claim 1, it is characterised in that：

The coverage area of first community cell corresponding with the base station for providing service to the user equipment before switching There is overlapping；Or,

The base station has overlapping with the frequency of the target BS.

20. base station described in 7 or 18 according to claim 1, it is characterised in that：

The transmission unit is also used to：Radio resource allocation request message is sent to the target BS, the distribution request disappears It is corresponding that breath for the target BS is that the user equipment distributes to be switched uplink in the first community Row resource.

21. base station described in 7 or 18 according to claim 1, it is characterised in that：

The transmission unit is also used to：Media access control layer control unit MAC CE, the MAC are sent to the user equipment CE is used to indicate whether that uplink and downlink transfer is allowed to separate.

22. base station described in 7 or 18 according to claim 1, it is characterised in that：

The uplink transmission information includes following a kind of or any number of combination：The radio access bearer E-RAB of at least one evolution Mark, at least one described E-RAB identify corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Its In, the wireless heterogeneous networks contextual information includes：Ascending wireless resource specific configuration information and/or user terminal it is small Area-radio network temporary identifier C-RNTI information.

23. base station described in 7 or 18 according to claim 1, it is characterised in that：

24. base station described in 7 or 18 according to claim 1, it is characterised in that：

It further include sign in the switching command；

The sign be used to indicate the user equipment and the target BS create it is described to be switched for carrying The uplink of row transmission simultaneously retains the downlink between the base station；Or,

The sign be used to indicate the user equipment and the target BS create it is described to be switched for carrying The uplink of row transmission, and retain uplink and downlink between the base station.

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

Receiving unit, for receiving the switching request message of source base station transmission, the switching request has user equipment to be switched Uplink transmission information；

Determination unit, for determining the first community for allowing the uplink of the user equipment to switch to the base station offer；

Transmission unit is that the to be switched uplink that the user equipment distributes is corresponding for sending to the source base station Row resource allocation information, so that the user equipment described after switching is kept the downlink transfer between the source base station and via the base It stands and carries out the uplink；

26. base station according to claim 25, which is characterized in that the determination unit is specifically used for：

When the source base station is macro base station, and the base station is micro-base station, determine that the uplink for allowing the user equipment is cut Shift to the first community that the base station provides.

27. the base station according to claim 25 or 26, it is characterised in that：

The receiving unit is also used to receive the radio resource allocation request message that the source base station is sent, the radio resource Allocation request message is that the user equipment distributes to be switched uplink pair in the first community for the base station The ascending resource answered.

28. the base station according to claim 25 or 26, it is characterised in that：

29. a kind of user equipment, which is characterized in that including：

Receiving unit, for receiving the switching command of source base station transmission, the switching command has to be distributed for the user equipment The corresponding ascending resource configuration information of to be switched uplink；

Configuration unit, for carrying out ascending resource configuration, the user equipment after switching according to the ascending resource configuration information It keeps the downlink transfer between the source base station and carries out the uplink via target BS；The target BS is described Source base station determines the corresponding base station of first community that the uplink of the user equipment is switched to；

30. user equipment according to claim 29, it is characterised in that：

It further include sign in the switching command；

31. the user equipment according to claim 29 or 30, which is characterized in that further include division unit, be used for：

It is uplink PDCP entity and downlink PDCP entity, the uplink PDCP entity and the target BS by PDCP entity division The first community of offer is corresponding, and the downlink PDCP entity is corresponding with the second community that the source base station provides；

It is uplink RLC entity and downlink RLC entity by RLC entity division, the uplink RLC entity and the target BS provide First community it is corresponding, the downlink RLC entity is corresponding with the second community that the source base station provides；

32. user equipment according to claim 31, which is characterized in that the source base station is macro base station, the target base It stands as micro-base station.

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

The uplink of user equipment is switched to first community for determining by processor；

Transmitter, for sending switching request to the corresponding target BS of the first community, the switching request has described The to be switched uplink transmission information of user equipment；

The transmitter is also used to, and sends switching command to the user equipment, the switching command has to be set for the user The corresponding ascending resource configuration information of the to be switched uplink that back-up is matched, so that the user equipment described after switching is kept and institute It states the downlink transfer between base station and carries out the uplink via the target BS；

34. base station according to claim 33, which is characterized in that the processor is specifically used for：When the base station is macro Base station, when the target BS is micro-base station, determining switch to the uplink of the user equipment is mentioned by the micro-base station For the first community of service.

35. the base station according to claim 33 or 34, it is characterised in that：

The coverage area of first community cell corresponding with the source base station for providing service to the user equipment before switching has Overlapping；Or,

The target BS has overlapping with the frequency of the source base station.

36. the base station according to claim 33 or 34, it is characterised in that：

The transmitter is also used to：Radio resource allocation request message, the allocation request message are sent to the target BS It is that the user equipment distributes to be switched uplink corresponding uplink in the first community for the target BS Resource.

37. the base station according to claim 33 or 34, it is characterised in that：

The transmitter is also used to：Media access control layer control unit MAC CE, the MAC are sent to the user equipment CE is used to indicate whether that uplink and downlink transfer is allowed to separate.

38. the base station according to claim 33 or 34, it is characterised in that：

39. the base station according to claim 33 or 34, it is characterised in that：

40. the base station according to claim 33 or 34, it is characterised in that：

It further include sign in the switching command；

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

Receiver, for receiving the switching request message of source base station transmission, the switching request has user equipment to be switched Uplink transmission information；

Processor, for determining the first community for allowing the uplink of the user equipment to switch to the base station offer；

Transmitter, for sending the corresponding uplink of to be switched uplink distributed for the user equipment to the source base station Resource allocation information, so that the user equipment described after switching is kept the downlink transfer between the source base station and via the base station Carry out the uplink；

42. base station according to claim 41, it is characterised in that：The processor, is specifically used for：

43. the base station according to claim 41 or 42, the receiver is also used to：

The radio resource allocation request message that the source base station is sent is received, the radio resource allocation request message is for described Base station is that the user equipment distributes to be switched uplink corresponding ascending resource in the first community.

44. the base station according to claim 41 or 42, it is characterised in that：

The uplink transmission information includes following a kind of or any number of combination：At least one E-RAB of the radio access bearer of evolution Mark, at least one described E-RAB identify corresponding E-RAB QoS parameter, wireless heterogeneous networks contextual information；Its In, the wireless heterogeneous networks contextual information includes：Ascending wireless resource specific configuration information and/or the user equipment Cell-radio network temporary identifier C-RNTI information.

45. a kind of user equipment, which is characterized in that including：

Receiver, for receiving the switching command of source base station transmission, the switching command has for user equipment distribution The corresponding ascending resource configuration information of to be switched uplink；

Processor, for carrying out ascending resource configuration according to the ascending resource configuration information, the user equipment is protected after switching It holds the downlink transfer between the source base station and carries out the uplink via target BS；The target BS is the source Base station determines the corresponding base station of first community that the uplink of the user equipment is switched to；

46. user equipment according to claim 45, it is characterised in that：

It further include sign in the switching command；

47. the user equipment according to claim 45 or 46, it is characterised in that:

The processor is also used to：It is uplink PDCP entity and downlink PDCP entity, the uplink PDCP by PDCP entity division Entity is corresponding with the first community that the target BS provides, and the downlink PDCP entity and the source base station provide second small Area is corresponding；

48. user equipment according to claim 47, which is characterized in that the source base station is macro base station, the target base It stands as micro-base station.