CN104519583B

CN104519583B - A kind of methods, devices and systems for carrying out data transmission and handling by dual link

Info

Publication number: CN104519583B
Application number: CN201310451367.0A
Authority: CN
Inventors: 邓云; 钱德瑞卡·沃拉尔; 温萍萍
Original assignee: Nokia Shanghai Bell Co Ltd; Alcatel Optical Networks Israel Ltd
Current assignee: Nokia Shanghai Bell Co Ltd; Alcatel Optical Networks Israel Ltd
Priority date: 2013-09-27
Filing date: 2013-09-27
Publication date: 2018-09-07
Anticipated expiration: 2033-09-27
Also published as: WO2015044771A2; TW201534163A; CN104519583A; WO2015044771A3

Abstract

The purpose of the present invention is to provide a kind of methods, devices and systems for carrying out data transmission and handling by dual link.According to the method for the present invention, including：Obtain the ability relevant information of the UE；Obtain distribution relevant information；According to the ability relevant information of the UE and the distribution relevant information, available distribution information corresponding with the macro base station itself, and capability distribution information corresponding with the small base station are determined；Based on the connection that can be configured with distribution information between the macro base station and the UE, to carry out data transmission between the macro base station and the UE, and the capability distribution information is sent to the small base station.The advantage of the invention is that：According to the ability relevant information of UE, the processing capacity threshold value for the UE that it can respectively be occupied to be arranged for macro base station and small base station, so that the data transmission in the dual link between UE and macro base station and small base station does not exceed the processing capacity of UE.

Description

A kind of methods, devices and systems for carrying out data transmission and handling by dual link

Technical field

The present invention relates to field of communication technology more particularly to a kind of sides for carrying out data transmission and handling by dual link Method, device and system.

Background technology

In the prior art, when configuration and scheduling user's set (UE, User Equipment), the land UMTS of evolution Wireless access network（E-UTRAN,Evolved Universal Terrestrial Radio Access Network）It needs to abide by Keep UE wireless access capabilities parameter (Radio Access parameters).

UE wireless access parameters include UE types and the parameter information independent of UE types, including the supported groupings of UE Data convergence protocol (PDCP, Packet Data Convergence Protocol)) parameter, UE support wireless spread-spectrum technology The physical layer parameter that (RLC, Radio Link Control) parameter, UE are supported, radio frequency (RF, the Radio that UE is supported Frequency) parameter etc..When UE access networks for the first time, network should obtain the wireless access capability of the UE.For example, Network should appreciate that UE types, to distribute corresponding radio resource to the UE.Wherein, the type information of UE can be based on current mark Certainly justice obtains.Preferably, current defined UE includes 8 type as shown in Table 1：

Table 1

Wherein, table 1 is only citing, those skilled in the art should understand that the type information of UE is not limited to listed by upper table These types of type information, for example, may also include UE in a TTI, the transmission block ratio sent on uplink shared channel Special maximum quantity etc..

Currently, dual link (dual connectivity) is introduced into the research project of cell enhancing, to improve frequency spectrum Efficiency and improvement mobility.

Referring to Fig.1.Fig. 1 illustrates current a kind of macro base station (administration Macro Cell, also known as MeNB) and small-sized base The system diagram for the dual link of (administration Small Cell, also known as SeNB) between UE of standing.

Wherein, without ideal backhaul between macro base station and small base station.Due to serious delay（Generally unidirectionally postpone It is 2 milliseconds to 60 milliseconds）, so that centralized scheduling can not be applied in this kind of system.And it is currently able to be applied to doubly-linked Distributed scheduling needs in welding system are executed by independent MAC.

In this case, even if the connection per side is in compliance with the processing capacity of UE, macro base station and small base station all cannot Ensure that the total resources distribution of two connections can defer to the processing capacity of UE.Therefore when the total resources distribution of both sides connection has exceeded How to be handled when the processing capacity of UE, is current problem to be solved.

Invention content

The object of the present invention is to provide a kind of method, apparatus for carrying out data transmission and handling by dual link and it is System.

According to an aspect of the present invention, one kind is provided in macro base station by the transmission of dual link and user equipment (UE) The method of data, wherein the UE can simultaneously be connect with the macro base station and a small base station, wherein the method includes with Lower step：

A obtains the ability relevant information of the UE；

Wherein, the method is further comprising the steps of：

B obtains distribution relevant information, wherein the distribution relevant information distributes to the macro base station and described for determination The processing capacity of the UE of small base station；

Ability relevant informations and the distribution relevant information of the c according to the UE, determination are right with the macro base station itself The available distribution information answered, and capability distribution information corresponding with the small base station；Wherein, described to be used with distribution information In the processing capacity for the UE that the instruction macro base station can occupy, the capability distribution information is used to indicate the small base station The processing capacity for the UE that can be occupied；

D is based on the connection that can be configured with distribution information between the macro base station and the UE, in the macro base It stands and carries out data transmission between the UE, and the capability distribution information is sent to the small base station.

According to an aspect of the present invention, one kind is provided in small base station by the biography of dual link and user equipment (UE) The method of transmission of data, wherein the UE is established with the macro base station and connected, wherein the described method comprises the following steps：

A receives the capability distribution information from the macro base station, wherein the capability distribution information is used to indicate described small The processing capacity for the UE that type base station can occupy；

Connections of the B based on the capability distribution information configuration and the UE, between the small base station and the UE Carry out data transmission.

According to an aspect of the present invention, one kind is provided in macro base station by the transmission of dual link and user equipment (UE) The method of data, wherein the described method comprises the following steps：

A' obtains the ability relevant information of the UE；

Wherein, the method is further comprising the steps of：

B' is sent to the small base station for configuring the request being connect with the UE；

C' is received from small base station based on the fed back assignment request information of the request；

D' is determined corresponding with the macro base station itself based on the assignment request information and the ability relevant information Distribution information can be used, wherein the processing capacity that the UE that the macro base station can occupy can be used to indicate with distribution information；

E' is based on the connection that can be configured with distribution information between the macro base station and the UE, in the macro base It stands and carries out data transmission between the UE.

According to an aspect of the present invention, one kind is provided in small base station by the biography of dual link and user equipment (UE) The method of transmission of data, wherein the UE can be connect with the macro base station and a small base station simultaneously, wherein the method includes Following steps：

A' obtains the base station state information of itself；Wherein, the base station state information is used to indicate the small base station Information processing state；

B' determines assignment request information corresponding with the UE according to the base station state information；

The assignment request information is sent to the macro base station by C', be based on assignment request information configuration with it is described The connection of UE, and carry out the data transmission between the small base station and the UE.

According to an aspect of the present invention, it is corresponding during also offer one kind is in user equipment (UE) to the dual link of the UE The method that data are handled, wherein the UE can be connect with the macro base station and a small base station simultaneously, wherein the side Method includes the following steps：

According to the ability relevant information of the UE, judge whether pending data corresponding with the dual link exceeds institute State the processing capacity of UE；

When pending data corresponding with the dual link exceeds the processing capacity of the UE, selection processing behaviour is executed Make, with data information of the priority processing from the macro base station.

According to an aspect of the present invention, a kind of macro base station is also provided, wherein the macro base station can pass through dual link and user The transmission data of equipment (UE), the UE can be connect with the macro base station and a small base station simultaneously, wherein the macro base station packet It includes：

First acquisition device, the ability relevant information for obtaining the UE；

Second acquisition device, for obtaining distribution relevant information, wherein the distribution relevant information is distributed to for determination The processing capacity of the UE of the macro base station and the small base station；

First determining device, for according to the UE ability relevant information and the distribution relevant information, determine with The corresponding available distribution information of the macro base station itself, and capability distribution information corresponding with the small base station；Wherein, institute The processing capacity that available distribution information is used to indicate the UE that the macro base station can occupy is stated, the capability distribution information is used for Indicate the processing capacity for the UE that the small base station can occupy；

First configuration device, for based on the company that can be configured with distribution information between the macro base station and the UE It connects, to carry out data transmission between the macro base station and the UE, and the capability distribution information is sent to described small-sized Base station.

According to an aspect of the present invention, a kind of small base station is also provided, wherein small base station can pass through dual link and use The transmission data of family equipment (UE), the UE are established with the macro base station and are connected, wherein the small base station includes：

First receiving device, for receiving the capability distribution information from the macro base station, wherein the capability distribution letter Breath is used to indicate the processing capacity for the UE that the small base station can occupy；

Second configuration device is used for the connection based on the capability distribution information configuration and the UE, with described small-sized Carry out data transmission between base station and the UE.

According to an aspect of the present invention, a kind of macro base station is also provided, wherein the macro base station can pass through dual link and user The transmission data of equipment (UE), wherein the macro base station includes：

Third acquisition device, the ability relevant information for obtaining the UE；

First sending device, for being sent to the small base station for configuring the request being connect with the UE；

Second reception device, for receiving from small base station based on the fed back assignment request information of the request；

Second determining device, for based on the assignment request information and the ability relevant information come determine with it is described macro The corresponding available distribution information in base station itself, wherein the institute that the macro base station can be used to indicate with distribution information and can be occupied State the processing capacity of UE；

Third configuration device, for based on the company that can be configured with distribution information between the macro base station and the UE It connects, to carry out data transmission between the macro base station and the UE.

According to an aspect of the present invention, a kind of small base station is also provided, which is set by dual link and user The transmission data of standby (UE), wherein the UE can be connect with the macro base station and a small base station simultaneously, wherein described small-sized Base station includes：

4th acquisition device, for obtaining the base station state information of itself；Wherein, the base station state information is used to indicate The information processing state of the small base station；

Third determining device, for according to the base station state information, determining assignment request information corresponding with the UE；

Third sending device is asked for the assignment request information to be sent to the macro base station with being based on the distribution The connection of information configuration and the UE is asked, and carries out the data transmission between the small base station and the UE.

According to an aspect of the present invention, a kind of user equipment (UE) is also provided, wherein the UE can simultaneously with it is described macro Base station is connected with a small base station, wherein the UE includes：

Judgment means judge pending number corresponding with the dual link for the ability relevant information according to the UE According to whether exceed the UE processing capacity；

Executive device is used to, when pending data corresponding with the dual link exceeds the processing capacity of the UE, hold Row selection processing operation, with data information of the priority processing from the macro base station.

According to an aspect of the present invention, a kind of communication system is also provided, wherein the communication system includes the macro base It stands and the small base station；Wherein, the third communication system further includes the UE.

Compared with prior art, the present invention has the following advantages：Scheme according to the present invention passes through the ability phase according to UE Information is closed, the processing capacity threshold value for the UE that it can respectively be occupied to be arranged for macro base station and small base station, so that UE The data transmission in dual link between macro base station and small base station does not exceed the processing capacity of UE, can make full use of UE Under the premise of processing capacity, reduce to greatest extent due to data transmission beyond UE processing capacities and caused by malfunction etc. it is abnormal； In addition, scheme according to the present invention, it can also be when the pending data of UE exceeds own processing capabilities, preferentially for macro base station Pending information is handled, to farthest mitigate due to processing capacity is insufficient and caused by the influence that malfunctions.

Description of the drawings

By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other Feature, objects and advantages will become more apparent upon：

Fig. 1 illustrates a kind of system diagram of the dual link between macro base station and small base station and UE；

Fig. 2 illustrates according to an embodiment of the invention by dual link and user equipment (UE) transmission data Method flow diagram；

Fig. 3 be illustrate according to still another embodiment of the invention by dual link and user equipment (UE) transmission data Method flow diagram；

Fig. 4 illustrates the structural schematic diagram of macro base station and small base station according to an embodiment of the invention；

Fig. 5 illustrates the structural schematic diagram of macro base station and small base station according to still another embodiment of the invention；

Fig. 6 illustrates the structural schematic diagram of UE according to an aspect of the present invention.

Same or analogous reference numeral represents same or analogous component in attached drawing.

Specific implementation mode

Present invention is further described in detail below in conjunction with the accompanying drawings.

Referring to Fig.1, communication system according to the present invention includes macro base station, at least one small-sized base corresponding with the macro base station Stand and at least one user equipment, wherein the user equipment can be connect with a macro base station and a small base station simultaneously, also that is, There are dual links between the user equipment and macro base station and a small base station.

Wherein, small base station according to the present invention includes but not limited to using femtocell (Femtocell), micro- The technologies such as microcellulor (Picocell), microcellulor (Microcell) are come the base station realized.

With reference to Fig. 2.Fig. 2 illustrates the side according to an embodiment of the invention by dual link and UE transmission datas Method flow chart.Method according to Fig.2, includes step S11, step S12, step S13 and the step S14 executed by macro base station, And step S21 and step S22 by small base station execution.

In step s 11, macro base station obtains the ability relevant information of UE.Wherein, the ability relevant information is used to indicate The ability of the accessible resources of the UE.

Preferably, the ability relevant information includes but not limited to UE type informations, and independently of UE type informations Other parameters information.It is highly preferred that the ability relevant information includes following information：

1）UE is in layer two（Layer2）Spatial cache information；

2）The type information of UE.Preferably, currently defined UE type informations are as described in aforementioned table 1.

It is highly preferred that the ability relevant information further includes the supported channel informations of UE, for example, whether UE can be simultaneously It supports to send information etc. on PUCCH to MeNB and SeNB.

Then, in step s 12, macro base station obtains distribution relevant information.

Wherein, processing of the distribution relevant information for determining the UE for distributing to the macro base station and the small base station Ability.

Preferably, it includes following at least any one that the distribution relevant information, which includes the distribution relevant information,；

1）Backhaul information between the small base station and the macro base station（backhaul）Such as transmission state information, transmission Postpone information etc.；

2）It is used to indicate the first transmission information of the transmission situation of the small base station；Preferably, the first transmission information Including but not limited to following at least any one：

I) it is offloaded to the quantity of the Data Radio Bearer (DRB, Data Radio Bearer) of the small base station；

Ii) it is offloaded to the quality of service information (QoS, Quality of Service) of the DRB of the small base station;

Iii) the channel state information of the small base station, i.e., channel shape of the described user equipment (UE) residing for the small base station State information;

V) load information of the small base station；

3）It is used to indicate the second transmission information of the transmission situation of the macro base station；Preferably, second transport packet It includes but is not limited to following at least any one：

I) total DRB quantity, i.e. total DRB quantity that the UE is established;

Ii it) is not offloaded to the quality of service information of the DRB of corresponding small base station；

Iii) the channel state information of the macro base station, i.e., channel state informations of the described UE residing for the macro base station;

V) load information of the macro base station.

Preferably, one or more items of information that first transport packet contains are transmitted with second in information respectively One or more items of information correspond to.

Wherein, macro base station can transmit information by the interaction with small base station to obtain the part first of small base station, macro The transmission information of part first and macro base station that base station can obtain small base station by the interaction with user equipment can pass through Transmit information in the part first that core net obtains small base station.Those skilled in the art according to actual conditions and should can need come really Surely the mode of the first transmission information of small base station is obtained, details are not described herein.

Then, in step s 13, ability relevant information and the distribution relevant information of the macro base station according to the UE, Determine available distribution information corresponding with the macro base station itself, and capability distribution information corresponding with the small base station.

Wherein, the processing capacity that the UE that the macro base station can occupy can be used to indicate with distribution information, it is described Capability distribution information is used to indicate the processing capacity for the UE that the small base station can occupy.

Preferably, the capacity threshold information of the processing capacity that with distribution information can include the available UE of macro base station；More Preferably, the capability distribution information includes the capacity threshold information of the processing capacity of the occupied UE of the small base station, and The ability relevant information of the UE.

Specifically, macro base station, which compares, distributes the first transmission information for including in relevant information and the second transmission information, and/ Or, according to backhaul information that include in distribution relevant information, small base station to the macro base station, to determine the available distribution of itself Information；And according to the available distribution information of itself, in conjunction with the ability relevant information of the UE, to determine the energy of corresponding small base station Power distributes information.

For example, macro base station is unloaded to the DRB quantity and UE of small base station according to small base station to the backhaul information of itself The DRB sums established, the available distribution information for determining itself include that can be used by what UE was received through DL-SCH in a TTI Transmission block bit number bit_no1, also, macro base station is transmitted according to the corresponding DL-SCH that are received in a TTI of the UE The maximum quantity bit_max of block bit determines the capability distribution information of small base station, that is, small base station is connect through DL-SCH by UE The available transmission block bit number bit_no2 received, wherein bit_no2=bit_max-bit_no1.

Wherein, those skilled in the art should can according to actual conditions and needs, come determine come according to distribution relevant information it is true Determine the method for salary distribution of the available distribution information of the available UE processing capacities of macro base station, details are not described herein.

Then, in step S14, macro base station can configure itself company between the UE based on described with distribution information It connects, to carry out data transmission between the macro base station and the UE, and the capability distribution information is sent to described small-sized Base station.

Specifically, macro base station can configure itself connection between the UE based on described with distribution information, in institute Distribution information can be used by stating described in meeting when carrying out data transmission between macro base station and the UE.

Preferably, the capability distribution information may be included in dual link and establish in request.

For example, when step S12 to step S14 is performed during configuring dual link for UE, in the step S14 Capability distribution information may be included in and be used to indicate small base station and the UE and establish in the request of connection.

Preferably, the capability distribution information can be transmitted separately to small base station.For example, new including by defining The information is sent to by macro base station in small base station by the signaling of the capability distribution information.

Then, in the step s 21, small base station receives the capability distribution information from the macro base station.

It is corresponding to abovementioned steps S14, the small base station can by dual link establish ask, for example, be used to indicate its with UE is established in the solicited message of connection, obtains the capability distribution information.

Alternatively, can be by obtaining the capability distribution information in special signaling.

Then, in step S22, small base station configures the connection with the UE based on the capability distribution information, with Carry out data transmission between the small base station and the UE.

Specifically, small base station configures itself connection between UE based on the capability distribution information, with So that meeting the capability distribution information by the data transmission performed by the connection.

First example according to the present invention, UE belong to type 5, according to table 1 it is found that its DL- for being received in a TTI The maximum quantity of SCH transmission block bits is 299552, and soft channel total number of bits is 3667200；Then macro base station in step s 13, The available pipe distribution information for determining itself includes available soft channel bit number 1000000, and received in a TTI The quantity available 100000 of DL-SCH transmission block bits, and determine small base station capability distribution information include the small base station can Soft channel bit number is 3667200-1000000=2667200, and the DL-SCH transmission blocks received in a TTI Quantity available 299552-100000=199552 of bit.Also, macro base station is in step S14, based on the available distribution of itself Information configures itself connection between UE, so that soft channel ratios of the UE by the connection transmission with the macro base station Special number is less than or equal to 1000000, and the quantity available of the DL-SCH transmission block bits received in a TTI is less than or equal to 100000；Also, the capability distribution information is sent to small base station by macro base station in step S14.Then small base station is according to institute The available capability distribution information obtained configures the connection with UE so that when to UE transmission datas, the UE by with this The soft channel bit number of the connection transmission of small base station is less than or equal to 2667200, the DL-SCH transmission received in a TTI The quantity available of block bit is less than or equal to 199552.

Wherein, in conjunction with the content introduced of the present invention, those skilled in the art should can come true according to actual conditions and demand Determine based on the mode that can be configured come the connection between base station and UE with distribution information/capability distribution information, for example, being based on The spatial cache for the UE that the small base station for including in capability distribution information can occupy, those skilled in the art should understand that passing through phase The time interval that sequence length is such as arranged in the configuration answered, setting confirms, carrys out occupied spatial cache of control data bag etc., with So that the spatial cache of the UE used shared by the data transmission being connect between small base station and UE is small-sized no more than this is distributed to The space of base station.

It is highly preferred that used by communication system according to the present invention when technology difference, the parameter information that needs to configure Also different.For example, using multiple-input and multiple-output（Multiple Input Multiple Output）The communication system of technology In, it is also necessary to according to the supported number of plies information of UE, to configure the number of plies information etc. for connecting corresponding MIMO.People in the art Member should can know the parameter information needed to configure according to actual conditions.Such as the maximum number of plies that UE is supported is 4, then can configure small Type base station uses 2 layers, and macro base station uses other 2 layers.

It should be noted that process in accordance with the present invention S11 to step S14 and step S21 and step S22, you can It is executed during dual link for UE foundation and between macro base station and small base station, so that UE and macro base station and small base station Between connection meet the available capability information of macro base station and the distribution capability information of small base station respectively；Alternatively, also can be In the case of dual link between UE and macro base station and small base station is already present, when distributing relevant information and changing before triggering The execution for stating step, to update the configuration information being connect between UE and macro base station and small base station.

Fig. 3 be illustrate according to still another embodiment of the invention by dual link and user equipment (UE) transmission data Method flow diagram.Method according to the present embodiment includes the step S11' executed by macro base station, step S12', step S13', Step S14' and step S15', and step S21', step S22' and step S23' by small base station execution.

In step S11', macro base station obtains the ability relevant information of UE.Wherein, macro base station obtains the ability correlation letter of UE The ability relevant information that the mode of breath obtains UE with the macro base station described in abovementioned steps S11 is same or similar, no longer superfluous herein It states.

Then, in step S12', macro base station is sent to the small base station for configuring the request being connect with the UE.

Preferably, described including but not limited to following any for configuring the request being connect with the UE：

1）Request is established for establishing the dual link being connect between small base station and UE；

2）Reconfiguration request for updating the connection configuration between small base station and UE.

Wherein, when the small base station, which is not yet established with UE, to be connected, the macro base station is sent to establish request, so that The small base station is established with UE and is connected；When existing connection between the small base station and UE, macro base station can be small-sized to this Base station sends reconfiguration request, to update the configuration of the connection.

Then, in step S13', macro base station is received from small base station based on the fed back distribution request of the request Information.

Wherein, the assignment request information is that small base station distributes available UE processing capacities for asking macro base station.

Then, in step S14', macro base station is determined based on the assignment request information and the ability relevant information Available distribution information corresponding with the macro base station itself.

Wherein, the processing capacity that the UE that the macro base station can occupy can be used to indicate with distribution information.

For example, for 6 corresponding UE of type, assignment request information includes requesting assignment to the capability distribution letter of small base station The quantity available that breath is included in the DL-SCH transmission block bits received in a TTI is 100000, according to table 1 it is found that type 6 The maximum quantities of DL-SCH transmission block bits that are received in a TTI of UE be 301504, then macro base station determines itself The quantity available that the DL-SCH transmission block bits received in a TTI can be included in distribution information be 301504-100000= 201504。

Then, in step S15', macro base station can configure the macro base station and the UE based on described with distribution information Between connection, to carry out data transmission between the macro base station and the UE.

Wherein, macro base station is based on the connection that can be configured with distribution information between the macro base station and the UE, with The mode carried out data transmission between the macro base station and the UE is based on described can use with macro base station in abovementioned steps S14 and divides The connection between the macro base station and the UE is configured with information, to carry out data biography between the macro base station and the UE Defeated mode is same or similar, repeats no more.

Then, in step S21', small base station obtains the base station state information of itself.

Wherein, the base station state information is used to indicate the information processing state of the small base station.Preferably, the base Status information of standing includes but not limited to following at least any one：

1）The channel state information of small base station, i.e. UE channel state information residing in small base station；

2）The load information of small base station；

3）It is offloaded to the transmission state information of the DRB of the small base station；

4）Backhaul state between the small base station and macro base station.

Wherein, those skilled in the art should can determine that small base station obtains own base stations shape according to actual conditions and demand The mode of state information, details are not described herein.

Then, in step S22', small base station determines distribution corresponding with the UE according to the base station state information Solicited message.

Then, in step S23', the assignment request information is sent to the macro base station by small base station, and according to institute Assignment request information is stated to configure the connection with the UE, to execute data transmission between the small base station and the UE.

Wherein, small base station, which is configured based on the assignment request information with the UE modes connecting, includes but not limited to It is any below：

1）Small base station directly according to the processing capacity information for the UE for including in the assignment request information, come configure itself with Connection between the UE, so that the processing via the data transmission of the connection without departing from the UE defined in assignment request information Ability；

2）The assignment request information is sent to macro base station by small base station, so that macro base station determines capability distribution information, and Based on the capability distribution information that macro base station is fed back, to configure itself connection between the UE, so that via the connection Processing capacity of the data transmission without departing from the UE defined in capability distribution information.Which will give in detail in follow-up excellent scheme It states, details are not described herein again.

According to the present embodiment preferred embodiment, wherein the method according to this programme further includes being executed by macro base station Step S16'（It is not shown）, step S151' is further comprised by the step S15' of macro base station execution（It is not shown）；By small base station The step S23' of execution further comprises step S231'（It is not shown）, step S232'（It is not shown）With step S233'（Figure is not Show）.

In step S231', the assignment request information is sent to the macro base station by small base station.

Then, in step S151', macro base station is determined based on the assignment request information and the ability relevant information Available distribution information corresponding with the macro base station itself, and capability distribution information corresponding with the small base station.

Specifically, macro base station according to macro base station according to assignment request information and the ability relevant information, come determine with should Itself corresponding available first processing capacity of assignment request information, and small base station corresponding with the assignment request information Second processing ability, and in conjunction with determining initial available point corresponding with the macro base station itself according to the ability relevant information With information, and initial ability corresponding with the small base station distributes information, right with the macro base station itself finally to determine The available distribution information answered, and capability distribution information corresponding with the small base station.

Preferably, macro base station is based on predetermined process rule, according to the first processing capacity and initially can with distribute information come Determine the corresponding available distribution information of macro base station itself；Similarly, macro base station is based on predetermined process rule, according to second processing Ability and initial ability distribute information to determine the corresponding capability distribution information of small base station itself.

For example, macro base station by first processing capacity and initial available distribution information, select larger one as The corresponding available distribution information of macro base station itself；In another example macro base station will be in second processing ability and initial ability distribution information Capability distribution information etc. of smaller one as small base station.

Then, in step S16', macro base station sends the capability distribution information to the small base station.

Then, in step S232', small base station receives what the macro base station was fed back based on the assignment request information The capability distribution information of the UE.

Then, in step S233', small base station configures the connection with the UE based on the capability distribution information, To carry out data transmission between the small base station and the UE.

Wherein, the operation of step S233' is configured with the middle-size and small-size base stations abovementioned steps S22 based on the capability distribution information It is same or similar in the mode carried out data transmission between the small base station and the UE with the connection of the UE, no longer It repeats.

According to the method for the present invention, by the ability relevant information according to UE, it is arranged for macro base station and small base station The processing capacity threshold value for the UE that can respectively occupy, so that in dual link between UE and macro base station and small base station Data transmission does not exceed the processing capacity of UE, can under the premise of making full use of UE processing capacities, reduce to greatest extent by In data transmission beyond UE processing capacities and caused by malfunction etc. it is abnormal.

It should be noted that process in accordance with the present invention S11' to step S15' and step S21' be to step S23', both It can be executed during being established for UE and dual link between macro base station and small base station, so that UE and macro base station and small-sized Connection between base station meets the available capability information of macro base station and the distribution capability information of small base station respectively；Alternatively, Can be already present in the dual link between UE and macro base station and small base station, it is touched when distributing relevant information and changing It sends out abovementioned steps to execute, to update the configuration information connecting between UE and macro base station and small base station.

Fig. 4 illustrate according to still another embodiment of the invention in UE to corresponding to dual link data carry out The method flow diagram of processing.Method according to the present embodiment includes by the UE step S31 executed and step S32.

In step S31, UE judges pending data corresponding with the dual link according to the ability relevant information of itself Whether the processing capacity of the UE is exceeded.

Wherein, it is described in detail during the ability relevant information is aforementioned with reference to embodiment shown in Fig. 2, it is no longer superfluous herein It states.

Specifically, UE is according to the data packet of the received dual link between macro base station or small base station, with The ability relevant information of itself is compared, to judge whether received data packet exceeds the maximum processing capability of itself.

For example, in the downlink, UE is according to two connections respectively from macro base station and small base station, at one The summation of the transmission block bit number from DL-SCH received in TTI, corresponding to the type information with itself a, TTI The maximum quantity of the DL-SCH transmission block bits inside received is compared, when the transmission block bit number connected from two is more than When the corresponding maximum quantity of type information, judge that currently pending data corresponding with the dual link has exceeded the processing of itself Ability.

In another example UE according to from two connect, need to be buffered in layer two（Layer2）The sum of size of data, and work as The preceding spatial cache of itself compares, when judging that the data that cache is needed to be more than current spatial cache, judge currently with The corresponding pending data of the dual link has exceeded the processing capacity of itself.

Then, in step s 32, when pending data corresponding with the dual link exceeds the processing capacity of the UE When, selection processing operation is executed, with pending data of the priority processing from the macro base station.

Wherein, selection processing operation includes but not limited to following any mode：

1) pending data of the priority processing from macro base station；

2) stop receiving the information from small base station;

3) information some or all of corresponding with the small base station is deleted；

4）According to the service priority of pending data, the data of low priority are deleted.For example, according to the excellent of each DRB First grade deletes the data corresponding to the lower DRB of priority, to discharge its caching.

Preferably, the ability relevant information includes the supported channel informations of UE.

For example, when UE cannot send information to MeNB and SeNB on PUCCH simultaneously, then UE preferentially exists to MeNB at this time Information is sent on PUCCH.

Preferably, those skilled in the art can also be according to actual conditions and demand, to determine the specific of selection processing operation It realizes, to when pending data exceeds own processing capabilities, preferentially be handled for the pending information of macro base station, from And farthest mitigate due to processing capacity is insufficient and caused by the influence that malfunctions.

With reference to Fig. 5.Fig. 5 illustrates the structural representation of macro base station and small base station according to an embodiment of the invention Figure.Macro base station includes the first acquisition device 11, the second acquisition device 12, the first determining device 13 and first according to figure 5 Configuration device 14, the small base station include first receiving device 21 and the second configuration device 22.

First acquisition device 11 obtains the ability relevant information of UE.Wherein, the ability relevant information is used to indicate the UE The ability of accessible resource.

1）Spatial cache information of the UE in layer two (Layer2)；

Then, the second acquisition device 12 obtains distribution relevant information.

I) it is offloaded to the quantity of the Data Radio Bearer (DRB, Data Radio Bearer) of the small base station;

V) load information of the small base station；

I) total DRB quantity, i.e. total DRB quantity that the UE is established;

V) load information of the macro base station.

Wherein, the second acquisition device 12 in macro base station can be by obtaining with small base station, with UE, with the interaction of core net The first of small base station is taken to transmit information.Those skilled in the art according to actual conditions and be able to should need to obtain small-sized base to determine The mode for the first transmission information stood, details are not described herein.

Then, ability relevant information and the distribution relevant information of first determining device 13 according to the UE determines Available distribution information corresponding with the macro base station itself, and capability distribution information corresponding with the small base station.

Specifically, the first determining device 13 compares the first transmission information for including in distribution relevant information and the second transmission letter Breath, and/or, it, can come determine itself according to include in the distribution relevant information, backhaul information of small base station to the macro base station With distribution information；And according to the available distribution information of itself, in conjunction with the ability relevant information of the UE, to determine corresponding small-sized base The capability distribution information stood.

For example, the first determining device 13 according to small base station to the backhaul information of itself affiliated macro base station, be unloaded to small-sized The DRB sums that the DRB quantity and UE of base station are established, the available distribution information for determining itself include the warp in a TTI The available transmission block bit number bit_no1 that DL-SCH is received by UE, also, the first determining device 13 according to the UE it is corresponding The maximum quantity bit_max for the DL-SCH transmission block bits being received in one TTI determines the capability distribution letter of small base station Breath, that is, the available transmission block bit number bit_no2 that small base station is received through DL-SCH by UE, wherein bit_no2=bit_ max-bit_no1。

Then, the first configuration device 14 based on it is described can with distribution information come configure itself affiliated macro base station and the UE it Between connection, to carry out data transmission between the macro base station and the UE, and the capability distribution information is sent to described Small base station.

Specifically, the first configuration device 14 can configure itself affiliated macro base station and the UE based on described with distribution information Between connection, when carrying out data transmission between macro base station and the UE meet described in can use distribution information.

For example, when the second acquisition device 12, the first determining device 13, the first configuration device 14 are establishing dual link for UE It is performed in the process, the first configuration device 14 can establish capability distribution packet contained in small base station is used to indicate with the UE In the request of connection, and send this request to small base station.

Then, first receiving device 21 receives the capability distribution information from the macro base station.

Corresponding to the operation of the first configuration device 14, which can establish request letter by receiving dual link It enables, for example, being used to indicate it establishes the solicited message of connection with UE, and therefrom obtains the capability distribution information.

Then, the second configuration device 22 configures the connection with the UE based on the capability distribution information, with described Carry out data transmission between small base station and the UE.

Specifically, the second configuration device 22 matches itself connection between UE based on the capability distribution information It sets, so that meeting the capability distribution information by the data transmission performed by the connection.

First example according to the present invention, UE belong to type 5, according to table 1 it is found that its DL- for being received in a TTI The maximum quantity of SCH transmission block bits is 299552, and soft channel total number of bits is 3667200；Then the first of macro base station determines dress The available pipe distribution information for setting 13 determinations itself includes available soft channel bit number 1000000, and is received in a TTI The quantity available 100000 of the DL-SCH transmission block bits arrived, and determine that the capability distribution information of small base station includes the small-sized base Available soft channel bit number of standing is 3667200-1000000=2667200, and the DL-SCH received in a TTI is passed Quantity available 299552-100000=199552 of defeated piece of bit.Also, the first configuration device 14 of macro base station based on itself Itself connection between UE can be configured with distribution information, so that the UE passes through the connection transmission with the macro base station Soft channel bit number is less than or equal to 1000000, and the quantity available of the DL-SCH transmission block bits received in a TTI is less than Or it is equal to 100000；Also, the capability distribution information is sent to small base station by the first configuration device 14.Then in small base station Second configuration device 22 configures the connection with UE according to the available capability distribution information obtained, so that being transmitted to UE When data, which is less than or equal to 2667200 by the soft channel bit number of the connection transmission with the small base station, in a TTI In the quantity available of DL-SCH transmission block bits that receives be less than or equal to 199552.

It should be noted that the first acquisition device 11 of macro base station according to the present invention, the second acquisition device 12, first are really Determine device 13, the first configuration device 14 and the first receiving device 21 in small base station and the second configuration device 22, it both can be It is executed during dual link for UE foundation and between macro base station and small base station, so that UE and macro base station and small base station Between connection meet the available capability information of macro base station and the distribution capability information of small base station respectively；Alternatively, also can be In the case of dual link between UE and macro base station and small base station is already present, when distributing relevant information and changing before triggering It states device and executes operation, to update the configuration information being connect between UE and macro base station and small base station.

Fig. 6 is the structural schematic diagram for illustrating macro base station and small base station according to still another embodiment of the invention.Root Macro base station according to the present embodiment includes third acquisition device 11', and the first sending device 12', the second reception device 13', second really Determine device 14' and third configuration device 15', include the 4th acquisition device 21' according to the small base station of the present embodiment, third determines Device 22' and third sending device 23'.

Third acquisition device 11' obtains the ability relevant information of UE.Wherein, third acquisition device 11' obtains the ability of UE The ability relevant information that the mode of relevant information obtains UE with aforementioned first acquisition device 11 is same or similar, no longer superfluous herein It states.

Then, the first sending device 12' is sent to the small base station for configuring the request being connect with the UE.

1）Request is established in connection for establishing the dual link between small base station and UE；

Wherein, when the small base station, which is not yet established with UE, to be connected, the first sending device 12' is sent to establish Request connects so that the small base station is established with UE；When existing connection between the small base station and UE, first sends Device 12' can send reconfiguration request to the small base station, to update the configuration of the connection.

Then, the second reception device 13' is received from small base station based on the fed back assignment request information of the request.

Then, the second determining device 14' is determined and institute based on the assignment request information and the ability relevant information State the corresponding available distribution information of macro base station itself.

For example, for 6 corresponding UE of type, assignment request information includes requesting assignment to the capability distribution letter of small base station The quantity available that breath is included in the DL-SCH transmission block bits received in a TTI is 100000, according to table 1 it is found that type 6 The maximum quantities of DL-SCH transmission block bits that are received in a TTI of UE be 301504, then the second determining device 14' is true The quantity available that the fixed available distribution information of itself is included in the DL-SCH transmission block bits received in a TTI is 301504-100000=201504。

Then, third configuration device 15' can be configured with distribution information between the macro base station and the UE based on described Connection, to carry out data transmission between the macro base station and the UE.

Wherein, third configuration device 15' can be configured with distribution information between the macro base station and the UE based on described Connection, in a manner of carrying out data transmission between the macro base station and the UE with aforementioned first configuration device 14 be based on institute State the connection that can be configured with distribution information between the macro base station and the UE, between the macro base station and the UE into The mode of row data transmission is same or similar, repeats no more.

Then, the 4th acquisition device 21' obtains the base station state information of itself.

2）The load information of small base station；

4）Backhaul state between the small base station and macro base station.

Then, third determining device 22' determines distribution request letter corresponding with the UE according to the base station state information Breath.

Then, the assignment request information is sent to the macro base station by third sending device 23', and according to the distribution Solicited message configures the connection with the UE, to execute data transmission between the small base station and the UE.

Wherein, third sending device 23', which is configured based on the assignment request information with the UE modes connecting, includes But it is not limited to following any：

1）Third sending device 23' is directly according to the processing capacity information for the UE for including in the assignment request information, to match Itself connection between the UE is set, so that via the data transmission of the connection without departing from defined in assignment request information The processing capacity of UE；

2）The assignment request information is sent to macro base station by third sending device 23', so that macro base station determines capability distribution Information, and the capability distribution information fed back based on macro base station, to configure itself connection between the UE, so that via this Processing capacity of the data transmission of connection without departing from the UE defined in capability distribution information.Which will be in follow-up excellent scheme It is described in detail, details are not described herein again.

According to the present embodiment preferred embodiment, wherein the macro base station according to this programme further includes the second sending device （It is not shown）, the 4th sending device is further comprised according to the third sending device 23' of the small base station of this programme（It is not shown）、 Third reception device（It is not shown）And the 4th configuration device（It is not shown）.

The assignment request information is sent to the macro base station by the 4th sending device in small base station.

Then, the second determining device 14' of the macro base station is based on the assignment request information and the ability relevant information To determine available distribution information corresponding with the macro base station itself, and capability distribution corresponding with small base station letter Breath.

Specifically, the second determining device 14' comes according to macro base station according to assignment request information and the ability relevant information Determine itself available first processing capacity corresponding with the assignment request information, and corresponding with the assignment request information small The second processing ability of type base station, and it is corresponding with the macro base station itself first in conjunction with being determined according to the ability relevant information It begins to distribute information with distribution information, and initial ability corresponding with the small base station, finally to determine and the macro base It stands itself corresponding available distribution information, and capability distribution information corresponding with the small base station.

Preferably, the second determining device 14' is based on predetermined process rule, according to the first processing capacity and initial available point The corresponding available distribution information of macro base station itself is determined with information；Similarly, the second determining device 14' is advised based on predetermined process Then, the corresponding capability distribution information of small base station itself determined according to second processing ability and initial ability distribution information.

For example, the second determining device 14' is by first processing capacity and initial available distribution information, selecting larger The corresponding available distribution information of one affiliated macro base station of conduct itself；In another example the second determining device 14' is by second processing ability The capability distribution information etc. as small base station smaller in information is distributed with initial ability.

Then, the second sending device sends the capability distribution information to the small base station.

Then, the third reception device in small base station is received the macro base station and is fed back based on the assignment request information The UE capability distribution information.

Then, the 4th configuration device configures the connection with the UE based on the capability distribution information, with described small Carry out data transmission between type base station and the UE.

Wherein, the operation of the 4th configuration device is configured with aforementioned second configuration device 22 based on the capability distribution information It is same or similar in the mode carried out data transmission between the small base station and the UE with the connection of the UE, no longer It repeats.

Scheme according to the present invention, by the ability relevant information according to UE, it is arranged for macro base station and small base station The processing capacity threshold value for the UE that can respectively occupy, so that in dual link between UE and macro base station and small base station Data transmission does not exceed the processing capacity of UE, can under the premise of making full use of UE processing capacities, reduce to greatest extent by In data transmission beyond UE processing capacities and caused by malfunction etc. it is abnormal.

It should be noted that third acquisition device 11', the first sending device 12', the in macro base station according to the present invention The 4th acquisition device in two reception device 13', the second determining device 14' and third configuration device 15' and small base station 21', third determining device 22' and third sending device 23' both can establish pair between macro base station and small base station for UE It is executed during connection, so that the connection between UE and macro base station and small base station meets the available capability of macro base station respectively The distribution capability information of information and small base station；Alternatively, dual link that also can be between UE and macro base station and small base station is In the presence of, when distributing relevant information and changing, triggering aforementioned device executes operation, with update UE and macro base station and The configuration information of connection between small base station.

Fig. 7 illustrates the structural schematic diagram of UE according to still another embodiment of the invention.According to the UE packets of the present embodiment Include judgment means 31 and executive device 32.

Whether judgment means 31 judge pending data corresponding with the dual link according to the ability relevant information of itself Processing capacity beyond the UE.

Specifically, judgment means 31 are according to the number of the received dual link between macro base station or small base station It according to packet, is compared with the ability relevant information of itself affiliated UE, to judge whether received data packet exceeds itself Maximum processing capability.

For example, in the downlink, judgment means 31 are connected according to two respectively from macro base station and small base station, The summation of the transmission block bit number from DL-SCH received in a TTI, it is corresponding with itself type information of affiliated UE , the maximum quantities of the DL-SCH transmission block bits received in a TTI be compared, when the transmission block connected from two When bit number is more than type information corresponding maximum quantity, judgment means 31 judge current corresponding with the dual link pending Data have exceeded the processing capacity of itself.

In another example judgment means 31 according to from two connect, need to be buffered in layer two（Layer2）Size of data The sum of, compared with the spatial cache of itself current affiliated UE, when the data for needing to cache are more than current spatial cache, Judgment means 31 judge that current pending data corresponding with the dual link has exceeded the processing capacity of itself.

Then, when pending data corresponding with the dual link exceeds the processing capacity of the UE, executive device 32 Selection processing operation is executed, with pending data of the priority processing from the macro base station.

1) pending data of the priority processing from macro base station；

2) stop receiving the information from small base station;

For example, when UE cannot send information to MeNB and SeNB on PUCCH simultaneously, and macro base station and small base station it Between the pending data of dual link have exceeded the processing capacity of UE, then at this time the executive device 32 of UE determine it is preferential support to MeNB sends information on PUCCH.

It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims Variation includes within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.This Outside, it is clear that one word of " comprising " is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in system claims is multiple Unit or device can also be realized by a unit or device by software or hardware.The first, the second equal words are used for table Show title, and does not represent any particular order.

Claims

1. one kind passing through the method for dual link and the transmission data of user equipment (UE) in macro base station, wherein the UE can be same When connect with the macro base station and a small base station, wherein the described method comprises the following steps：

A obtains the ability relevant information of the UE；

Wherein, the method is further comprising the steps of：

B obtains distribution relevant information, wherein the distribution relevant information distributes to the macro base station and described small-sized for determination The processing capacity of the UE of base station；

Ability relevant informations and the distribution relevant information of the c according to the UE, determination are corresponding with the macro base station itself Distribution information, and capability distribution information corresponding with the small base station can be used；Wherein, described to be used to refer to distribution information Show that the processing capacity for the UE that the macro base station can occupy, the capability distribution information are used to indicate the small base station and can account for The processing capacity of the UE；

D based on the connection that can be configured with distribution information between the macro base station and the UE, with the macro base station with Carry out data transmission between the UE, and the capability distribution information be sent to the small base station, wherein when with it is described double When connecting processing capacity of the corresponding pending data beyond the UE, the UE executes selection processing operation, with priority processing Data information from the macro base station.

2. one kind passing through the method for dual link and the transmission data of user equipment (UE) in small base station, wherein the UE is It establishes and connects with macro base station, wherein the described method comprises the following steps：

A receives the capability distribution information from the macro base station, wherein the capability distribution information is used to indicate the small-sized base It stands the processing capacity of the UE that can be occupied；

Connections of the B based on the capability distribution information configuration and the UE, to be carried out between the small base station and the UE Data transmission；Wherein, when pending data corresponding with the dual link exceeds the processing capacity of the UE, the UE is executed Processing operation is selected, with data information of the priority processing from the macro base station.

3. one kind passing through the method for dual link and the transmission data of user equipment (UE) in macro base station, wherein the method packet Include following steps：

A' obtains the ability relevant information of the UE；

Wherein, the method is further comprising the steps of：

B' is sent to small base station for configuring the request being connect with the UE；

D' is determined corresponding with the macro base station itself available based on the assignment request information and the ability relevant information Distribute information, wherein the processing capacity that the UE that the macro base station can occupy can be used to indicate with distribution information；

E' based on the connection that can be configured with distribution information between the macro base station and the UE, with the macro base station with Carry out data transmission between the UE；Wherein, when pending data corresponding with the dual link exceeds the processing energy of the UE When power, the UE executes selection processing operation, with data information of the priority processing from the macro base station.

4. according to the method described in claim 3, wherein, the step d' further comprises：

Available point corresponding with the macro base station itself is determined based on the assignment request information and the ability relevant information With information, and capability distribution information corresponding with the small base station；Wherein, it is described can be used to indicate with distribution information it is described The processing capacity for the UE that macro base station can occupy, the capability distribution information are used to indicate the institute that the small base station can occupy State the processing capacity of UE；

Wherein, the method is further comprising the steps of：

The capability distribution information is sent to the small base station.

5. one kind passing through the method for dual link and the transmission data of user equipment (UE) in small base station, wherein the UE can It is connect simultaneously with macro base station and a small base station, wherein the described method comprises the following steps：

A' obtains the base station state information of itself；Wherein, the base station state information is used to indicate the information of the small base station Processing state；

The assignment request information is sent to the macro base station by C', to be configured with the UE's based on the assignment request information Connection, and carry out the data transmission between the small base station and the UE；Wherein, when corresponding with the dual link pending When data exceed the processing capacity of the UE, the UE executes selection processing operation, with priority processing from the macro base station Data information.

6. according to the method described in claim 5, wherein, the step C' is further comprising the steps of：

The assignment request information is sent to the macro base station；

Receive the capability distribution information for the UE that the macro base station is fed back based on the assignment request information；

Based on the connection of the capability distribution information configuration and the UE, to be carried out between the small base station and the UE Data transmission；Wherein, the capability distribution information is used to indicate the processing capacity for the UE that the small base station can occupy.

7. it is a kind of in user equipment (UE) to the dual link of the UE in the method that is handled of corresponding data, wherein it is described UE can be connect with macro base station and a small base station simultaneously, wherein the described method comprises the following steps：

According to the ability relevant information of the UE, judge whether pending data corresponding with the dual link exceeds the UE Processing capacity；

When pending data corresponding with the dual link exceeds the processing capacity of the UE, selection processing operation is executed, with Data information of the priority processing from the macro base station.

8. a kind of macro base station, wherein the macro base station can be same by the transmission data of dual link and user equipment (UE), the UE When connect with the macro base station and a small base station, wherein the macro base station includes：

Second acquisition device is used to obtain distribution relevant information, wherein the distribution relevant information is for described in determining distribute to The processing capacity of the UE of macro base station and the small base station；

First determining device, for according to the UE ability relevant information and the distribution relevant information, determine with it is described The corresponding available distribution information of macro base station itself, and capability distribution information corresponding with the small base station；Wherein, described can The processing capacity for the UE that the macro base station can occupy is used to indicate with distribution information, the capability distribution information is used to indicate The processing capacity for the UE that the small base station can occupy；

First configuration device, for based on the connection that can be configured with distribution information between the macro base station and the UE, To carry out data transmission between the macro base station and the UE, and the capability distribution information is sent to the small-sized base It stands；Wherein, when pending data corresponding with the dual link exceeds the processing capacity of the UE, the UE is executed at selection Reason operation, with data information of the priority processing from the macro base station.

9. a kind of small base station, wherein small base station can be by the transmission data of dual link and user equipment (UE), and the UE is It establishes and connects with macro base station, wherein the small base station includes：

First receiving device, for receiving the capability distribution information from the macro base station, wherein the capability distribution information is used In the processing capacity for the UE that the instruction small base station can occupy；

Second configuration device is used for the connection based on the capability distribution information configuration and the UE, in the small base station Carry out data transmission between the UE；Wherein, when pending data corresponding with the dual link exceeds the processing of the UE When ability, the UE executes selection processing operation, with data information of the priority processing from the macro base station.

10. a kind of macro base station, wherein the macro base station can pass through the transmission data of dual link and user equipment (UE), wherein described Macro base station includes：

First sending device, for being sent to small base station for configuring the request being connect with the UE；

Second determining device, for being determined and the macro base station based on the assignment request information and the ability relevant information Itself corresponding available distribution information, wherein the UE that the macro base station can be used to indicate with distribution information and can be occupied Processing capacity；

Third configuration device, for based on the connection that can be configured with distribution information between the macro base station and the UE, To carry out data transmission between the macro base station and the UE；Wherein, when pending data corresponding with the dual link is super When going out the processing capacity of the UE, the UE executes selection processing operation, is believed with data of the priority processing from the macro base station Breath.

11. macro base station according to claim 10, wherein second determining device is additionally operable to：

Wherein, the macro base station further includes：

Second sending device, for sending the capability distribution information to the small base station.

12. a kind of small base station, the transmission data which passes through dual link and user equipment (UE), wherein the UE It can be connect simultaneously with macro base station and a small base station, wherein the small base station includes：

4th acquisition device, for obtaining the base station state information of itself；Wherein, the base station state information is used to indicate described The information processing state of small base station；

Third sending device is believed for the assignment request information to be sent to the macro base station with being based on the distribution request It ceases to configure the connection with the UE, and carries out the data transmission between the small base station and the UE；Wherein, when with it is described When the corresponding pending data of dual link exceeds the processing capacity of the UE, the UE executes selection processing operation, preferentially to locate Manage the data information from the macro base station.

13. small base station according to claim 12, wherein the third sending device further comprises：

4th sending device, for the assignment request information to be sent to the macro base station；

Third reception device, the ability point for receiving the UE that the macro base station is fed back based on the assignment request information With information；

4th configuration device, for configuring the connection with the UE based on the capability distribution information, in the small-sized base It stands and carries out data transmission between the UE；Wherein, the capability distribution information is used to indicate what the small base station can occupy The processing capacity of the UE.

14. a kind of user equipment (UE), wherein the UE can be connect with macro base station and a small base station simultaneously, wherein the UE Including：

Judgment means judge whether pending data corresponding with dual link surpasses for the ability relevant information according to the UE Go out the processing capacity of the UE；

Executive device is used to, when pending data corresponding with the dual link exceeds the processing capacity of the UE, execute choosing Processing operation is selected, with data information of the priority processing from the macro base station.

15. a kind of communication system, wherein the communication system includes macro base station according to claim 8 and according to right It is required that the small base station described in 9, and/or, macro base station according to claim 10 or 11 and according to claim 12 or 13 The small base station；Wherein, the communication system further includes UE according to claim 14.