CN104219034B - Data transmission method and device - Google Patents

Data transmission method and device Download PDF

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Publication number
CN104219034B
CN104219034B CN201310222262.8A CN201310222262A CN104219034B CN 104219034 B CN104219034 B CN 104219034B CN 201310222262 A CN201310222262 A CN 201310222262A CN 104219034 B CN104219034 B CN 104219034B
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China
Prior art keywords
base station
descending
data
user equipment
website
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CN201310222262.8A
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CN104219034A (en
Inventor
常俊仁
李亚娟
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Honor Device Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201310222262.8A priority Critical patent/CN104219034B/en
Priority to PCT/CN2014/079271 priority patent/WO2014194841A1/en
Publication of CN104219034A publication Critical patent/CN104219034A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0097—Relays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of data transmission method and device, in the case where macro base station and small base station carry out data transmission with user equipment, including：Macro base station determines descending re-transmission website, wherein the descending website that retransmits is the website in macro base station and small base station for the data to the failed transmission of user device transmissions macro base station and small base station to user equipment；And macro base station makes to report that the descending data to be retransmitted determined are sent to user equipment via the descending re-transmission website according to downstream state, wherein the downstream state report expression user equipment receives the state of data from macro base station and small base station.Descending re-transmission task distribution between by being uniformly controlled base station by macro base station during carrier aggregation, the present invention can be prevented effectively from because data transmission efficiency is reduced caused by two station transmission conditions differences.

Description

Data transmission method and device
Technical field
The present invention relates to GSM, more particularly to a kind of it can realize the data transmission method and dress of carrier aggregation Put.
Background technology
In order to further improve the spectrum efficiency and user throughput of GSM, in LTE-A (Long Term The follow-up evolution of Evolution-Advanced, LTE) in introduce the general of carrier aggregation (Carrier Aggregation, CA) Read.So-called carrier aggregation, refer to UE (User Equipment, user equipment) can use simultaneously macro base station (Macro eNB, MeNB) and/or above and below multiple member carriers (Component Carrier, CC) progress of small base station (Small eNB, SeNB) Row communication, so as to support high speed data transfer.In general, as shown in figure 1, the cell coverage area of macro base station is than larger, and The cell coverage area of small base station is relatively small.Base station according to corresponding to member carrier, the carrier aggregation of LTE system can substantially divide To polymerize in base station between polymerization and base station, and polymerization can be further divided into polymerization and macro base station and small base between macro base station between base station Polymerization (polymerizeing between hereinafter referred to as grand small base station) between standing.Wherein, polymerization, due to only being controlled by a base station, is realized in base station Come relatively easy, existing relevant technical literature.However, not yet occur the technical literature on polymerizeing between base station at present, it is especially right It polymerize between grand small base station, how streamed data is urgently open question.
For example, from the perspective of protocol stack, can based on PDCP (Packet Data Convergence Protocol, Packet convergence protocol) SDU (service data unit, Service Data Unit), PDCP PDU (packet data unit, Bag data unit), RLC (Radio Link Control, wireless spread-spectrum technology) SDU, RLC PDU, MAC (Medium Access Control, medium education) data packet form such as SDU or MAC PDU carries out data distribution.Wherein, based on RLC PDU shuntings may be realized relatively easily.As shown in Figure 2 a, included based on RLC PDU shuntings：For descending, handled in rlc layer After data, or rlc layer is distributed before transferring next layer after RLC PDU sequence numbers to, and macro base station is by part RLC PDU Small base station is transmitted to, RLC PDU are then sent to user equipment through too small base station；For up, user equipment is by part RLC PDU is sent to small base station and remainder RLC PDU is sent into macro base station, and then small base station will be received from user equipment RLC PDU are forwarded to after macro base station merges, and high-rise handled is delivered to together.For being entered based on other data packet forms Capable data distribution, process is similar to the above, and simply data packet form is different.
However, in data distribution executed as described above, due to macro base station and the channel circumstance and/or transmission speed of small base station both sides Rate is substantially different, and being forwarded in addition via small base station needs certain call duration time, and this causes：For descending, user equipment is directed to Lost package detected by macro base station is probably that macro base station is transmitted to small base station and small base station is not yet sent to the number of user equipment According to bag；And for up, lost package of the macro base station detected by user equipment be probably user equipment be transmitted to small base station, And small base station is not yet sent to the packet of macro base station.This obviously can influence the lifting of the data transmission efficiency of whole system, especially It is in the case where RLC entities are carried out data transmission with UM or AM patterns.
Have speech, under UM patterns, UM RLC receiving entities are safeguarded based on UMD PDU sequence numbers to correlation window, Update, repeat the function such as detect and reorder.As shown in Figure 2 b, the reorder coboundary of window is the UMD being currently received PDU sequence number adds 1, and is represented with VR (H).The lower boundary of window of reordering is subtracted by coboundary after the window size that reorders Obtain, unspecial mark.Whole UM RLC receiving entities only maintain the timer that reorders, rather than for every Individual packet starts the timer that reorders.When the timer that reorders updates, the new coboundary for the Timer Controlling that reorders is The maximum sequence number for the UMD PDU being currently received, and lower boundary be before in up-and-down boundary first be not properly received UMD PDU sequence number.
If the data distribution for directly according to above-mentioned existing UM patterns between grand small base station polymerize is transmitted, due to grand The difference of the channel conditions and/or transmission rate of base station and small base station both sides, it is possible to cause user equipment in timing of reordering The lost package detected in device is the packet that macro base station or small base station are not sent also at all, so as to cause higher packet loss Rate.
In addition, under AM patterns, as shown in Figure 2 c, the lower boundary for receiving window is the continuous multiple AMD being currently received The value of the back to back next sequence number of sequence number highest AMD PDU sequence number in PDU, and represented with VR (R).Receive window The coboundary of mouth is that lower boundary adds window size.If the AMD PDU newly received are located at outside reception window or the PDU points Section had been received by, then abandoned, be otherwise put into caching process.AM RLC receiving entities carry out the behaviour that reorders based on the timer that reorders Make, corresponding coboundary and lower boundary when each timer that reorders starts are represented with certain variable, and to the sequence number model Uniformly treat in space in enclosing.After the PDU of all gaps is received before timer expiry in the sequence number range, then stop The timer.If after timer expiry, if also space, reorder timer to space below, And record coboundary and lower boundary, the i.e. renewal VR (MS) and VR (X) of corresponding wait of reordering.
If the data distribution for directly according to above-mentioned existing AM patterns between grand small base station polymerize is transmitted, due to grand The difference of the channel conditions and/or transmission rate of base station and small base station both sides, the side of low rate one, which may cause entirely to reorder, to be determined When device coboundary and lower boundary update slow and occur receiving window card window phenomenon so that the higher side of speed also without Method is sent with higher rate, and ultimately resulting in data transmission efficiency can not be lifted.
The content of the invention
Technical problem
In view of this, the technical problem to be solved in the present invention is to provide a kind of data transmission method, to cause carrier wave to gather Carrier aggregation can not influence the lifting of data transmission efficiency between conjunction, especially grand small base station.
Solution
In order to solve the above-mentioned technical problem, according to an aspect of the present invention there is provided a kind of data transmission method, first In the case that base station and the second base station carry out data transmission with user equipment, including：The first base station determines descending re-transmission Website, wherein the descending re-transmission website is to be used for the user device transmissions in the first base station and second base station The first base station and second base station are sent to the website of the data of the user equipment not successfully；And described first Base station makes to report that the descending data to be retransmitted determined are sent to the user via the descending re-transmission website according to downstream state Equipment, wherein user equipment described in the downstream state report expression receives number from the first base station and second base station According to state.
For data transmission method, in a kind of possible implementation, it is descending that the downstream state report includes first State report and the report of the second downstream state, wherein：User equipment described in the first downstream state report expression is from described One base station receives the state of data, and user equipment connects from second base station described in the second downstream state report expression Receive the state of data.
For data transmission method, in a kind of possible implementation, make in the first base station according to downstream state Report that the descending data to be retransmitted determined are sent to before the user equipment via the descending re-transmission website, in addition to it is described First base station sends descending retransmit to second base station, wherein the descending retransmit is stood comprising descending retransmit The information of point, the descending information for retransmitting website includes at least one in following message：Represent by the first base station Lai Control the descending information for retransmitting website, the descending identification information for retransmitting website, the descending cell for retransmitting website Identification information, represent whether second base station is determined as the descending information for retransmitting website, and represent described Whether first base station is determined as the descending information for retransmitting website.
For data transmission method, in a kind of possible implementation, the first base station makes according to downstream state report Accusing the descending data to be retransmitted determined and being sent via the descending re-transmission website to the user equipment includes：Described descending heavy Website is passed not including in the case of second base station, the first base station will report the descending of determination according to the downstream state Data to be retransmitted are sent to the user equipment.
For data transmission method, in a kind of possible implementation, the first base station makes according to downstream state report Accusing the descending data to be retransmitted determined and being sent via the descending re-transmission website to the user equipment includes：Described descending heavy Website is passed including in the case of second base station, the first base station will report that the descending of determination being treated according to the downstream state The part or all of transmission of data is retransmitted to second base station, so that second base station can be by the descending number to be retransmitted According to part or all of transmission to the user equipment.
For data transmission method, in a kind of possible implementation, the first base station makes according to downstream state report Accusing the descending data to be retransmitted determined and being sent via the descending re-transmission website to the user equipment includes：Described descending heavy Website is passed including in the case of second base station, the first base station is reported second downstream state and/or according to institute The descending data to be retransmitted for stating the report determination of the first downstream state are sent to second base station, so that second base station can The descending data to be retransmitted of determination will be reported according to second downstream state and/or report true according to first downstream state Fixed descending data to be retransmitted are sent to the user equipment.
For data transmission method, in a kind of possible implementation, make in the first base station according to downstream state Report that the descending data to be retransmitted determined are sent to before the user equipment via the descending re-transmission website, in addition to：Institute State first base station and send the descending retransmit to the user equipment.
For data transmission method, in a kind of possible implementation, make in the first base station according to downstream state Report that the descending data to be retransmitted determined are sent to before the user equipment via the descending re-transmission website, in addition to：Institute State first base station and receive the downstream state report from second base station；Or the first base station is sent out to second base station The downstream state is sent to report.
For data transmission method, in a kind of possible implementation, in addition to：The first base station determines up heavy Website is passed, wherein the uplink retransmission website is to be used to connect from the user equipment in the first base station and second base station The user equipment is received to send not successfully to the website of the first base station and/or the data of second base station；And it is described First base station sends uplink retransmission to the user equipment and indicated, wherein the uplink retransmission indicates to include the uplink retransmission station The information of point.
For data transmission method, in a kind of possible implementation, in addition to：The first base station is to described second Base station sends the uplink retransmission and indicated.
In order to solve the above-mentioned technical problem, according to another aspect of the present invention there is provided a kind of data transmission method, In the case that one base station and the second base station carry out data transmission with user equipment, including：The user equipment is according to up shape State report determines up data to be retransmitted, wherein, first base station described in the uplink state report expression and second base Stand and the state of data is received from the user equipment；And the user equipment sends the up data to be retransmitted to up Website is retransmitted, wherein the uplink retransmission website is the first base station and default website in second base station or is Website or be the first base station and second base that the uplink retransmission received from the first base station is specified in indicating Currently the up website authorized is assigned with standing to the user equipment.
For data transmission method, in a kind of possible implementation, it is up that the uplink state report includes first State report and the second uplink state include, wherein：First base station described in the first uplink state report expression is from described User equipment receives the state of data；And the second base station described in the second uplink state report expression is from the user equipment Receive the state of data.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of data transmission method, In the case that one base station and the second base station carry out data transmission with user equipment, including：The user equipment is from described first Base station receives descending retransmit, wherein, the descending retransmit includes the information of descending re-transmission website, the descending re-transmission Website is to be used in the first base station and second base station to first base station described in the user device transmissions and described Second base station is sent to the website of the data of the user equipment not successfully；And the user equipment is according to the descending re-transmission Indicate to receive downlink retransmitted data from the descending re-transmission website, wherein the downlink retransmitted data refers to that descending retransmit is stood Point is sent to the user equipment not successfully to the first base station of the user device transmissions and second base station Data.
For data transmission method, in a kind of possible implementation, in the user equipment according to described descending heavy Pass before indicating to receive downlink retransmitted data from the descending re-transmission website, in addition to：The user equipment is according to described descending Retransmit sends downstream state report to the first base station, wherein user equipment described in the downstream state report expression The state of data is received from the first base station and second base station.
For data transmission method, in a kind of possible implementation, the downstream state report is descending comprising first State report and the report of the second downstream state, wherein：User equipment described in the first downstream state report expression is from described One base station receives the state of data, and user equipment connects from second base station described in the second downstream state report expression Receive the state of data.
For data transmission method, in a kind of possible implementation, in the user equipment according to described descending heavy Pass before indicating to receive downlink retransmitted data from the descending re-transmission website, in addition to：Include institute in the descending re-transmission website In the case of stating the second base station, the user equipment also sends downstream state report to second base station.
For data transmission method, in a kind of possible implementation, the first base station is macro base station, described second Base station is small base station, and the cell coverage area of the macro base station is bigger than the cell coverage area of the small base station.
For data transmission method, in a kind of possible implementation, the state report is RLC state reports, with And the descending data to be retransmitted and the up data to be retransmitted are RLC PDU and/or PDU segmentation to be retransmitted.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of base station equipment, it includes： Descending re-transmission website determining module, for being carried out in the base station equipment as first base station and the second base station with user equipment In the case of data transfer, descending re-transmission website is determined, wherein the descending re-transmission website is the first base station and described the It is used to send not successfully to described to first base station described in the user device transmissions and second base station in two base stations and uses The website of the data of family equipment；And descending retransmission module, it is connected with the descending re-transmission website determining module, for making basis The descending data to be retransmitted that downstream state report is determined are sent to the user equipment via the descending re-transmission website, wherein, User equipment described in the downstream state report expression receives the state of data from the first base station and second base station.
For above-mentioned base station equipment, in a kind of possible implementation, it is descending that the downstream state report includes first State report and the report of the second downstream state, wherein：User equipment described in the first downstream state report expression is from described One base station receives the state of data, and user equipment connects from second base station described in the second downstream state report expression Receive the state of data.
For above-mentioned base station equipment, determined in a kind of possible implementation, in addition to the descending re-transmission website The descending retransmit module of module connection, the descending retransmit module is used to send descending retransmit to second base station Indicate, wherein the descending retransmit includes the descending information for retransmitting website, the descending packet for retransmitting website Include at least one in following message：Represent controlled by the first base station it is described it is descending retransmit website information, it is described under Row retransmits the identification information of website, the identification information of the descending cell for retransmitting website, represent second base station whether by The descending information for retransmitting website is determined as, and represents whether the first base station is determined as the descending re-transmission The information of website.
For above-mentioned base station equipment, in a kind of possible implementation, the descending retransmission module is configured as：Institute Descending re-transmission website is stated not including that in the case of second base station, will report that weight will be treated in the descending of determination according to the downstream state Data are passed to send to the user equipment.
For above-mentioned base station equipment, in a kind of possible implementation, the descending retransmission module is configured as：Institute Descending re-transmission website is stated including that in the case of second base station, will report that the descending of determination be waited to retransmit according to the downstream state The part or all of transmission of data is to second base station, so that second base station can be by the descending data to be retransmitted Partly or entirely send to the user equipment.
For above-mentioned base station equipment, in a kind of possible implementation, the descending retransmission module is configured as：Institute , will second downstream state report and/or according to described the in the case of stating descending re-transmission website and including second base station The descending data to be retransmitted that one descending state report is determined are sent to second base station, so that second base station can be by root The descending data to be retransmitted determined are reported according to second downstream state and/or report what is determined according to first downstream state Descending data to be retransmitted are sent to the user equipment.
For above-mentioned base station equipment, in a kind of possible implementation, the descending retransmit module is also configured To send the descending retransmit to the user equipment.
For above-mentioned base station equipment, in a kind of possible implementation, the descending retransmission module be additionally configured to from Second base station receives the downstream state report；Or the descending retransmission module is additionally configured to second base station Send the downstream state report.
For above-mentioned base station equipment, in a kind of possible implementation, in addition to：Uplink retransmission website determining module, For determining uplink retransmission website, wherein the uplink retransmission website be used in the first base station and second base station from The user equipment receives the user equipment and sent not successfully to the first base station and/or the data of second base station Website；And uplink retransmission indicating module, it is connected with the uplink retransmission website determining module, for being sent out to the user equipment Row retransmit is served, wherein the uplink retransmission indicates the information for including the uplink retransmission website.
For above-mentioned base station equipment, in a kind of possible implementation, the uplink retransmission indicating module is also configured Indicated to send the uplink retransmission to second base station.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of user equipment, including：On Row data determining module to be retransmitted, for the feelings carried out data transmission in first base station and the second base station with the user equipment Under condition, up data to be retransmitted are determined according to uplink state report, wherein, first base station described in the uplink state report expression And second base station receives the state of data from the user equipment；And uplink retransmission module, with the uplink retransmission Data determining module is connected, for the up data to be retransmitted to be sent to uplink retransmission website, wherein the uplink retransmission Website be the first base station and default website in second base station or for from the first base station receive it is up The website specified in retransmit or currently to be distributed in the first base station and second base station to the user equipment The up website authorized.
For above-mentioned user equipment, in a kind of possible implementation, it is up that the uplink state report includes first State report and the report of the second uplink state, wherein：First base station described in the first uplink state report expression is used from described Family equipment receives the state of data, and the second base station described in the second uplink state report expression connects from the user equipment Receive the state of data.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of user equipment, including：Under Row retransmit receiving module, for situation about carrying out data transmission in first base station and the second base station with the user equipment Under, descending retransmit is received from the first base station, wherein, the descending retransmit includes the letter of descending re-transmission website Breath, the descending re-transmission website is to be used in the first base station and second base station to described in the user device transmissions the One base station and second base station are sent to the website of the data of the user equipment not successfully；And descending retransmission module, It is connected with the descending retransmit receiving module, for being received according to the descending retransmit from the descending re-transmission website Downlink retransmitted data, wherein the downlink retransmitted data refers to described in the descending re-transmission website to the user device transmissions First base station and second base station are sent to the data of the user equipment not successfully.
For above-mentioned user equipment, in a kind of possible implementation, in addition to：Downstream state reports feedback module, It is connected with the descending retransmit receiving module, for according to the descending retransmit, downstream state report to be sent extremely The first base station, wherein, user equipment described in the downstream state report expression is from the first base station and described second Base station receives the state of data.
For above-mentioned user equipment, in a kind of possible implementation, it is descending that the downstream state report includes first State report and the report of the second downstream state, wherein：User equipment described in the first downstream state report expression is from described One base station receives the state of data, and user equipment connects from second base station described in the second downstream state report expression Receive the state of data.
For above-mentioned user equipment, in a kind of possible implementation, downstream state report feedback module also by It is configured to, in the case where the descending retransmit represents that the descending re-transmission website includes second base station, also by institute State the report of the first downstream state and second downstream state report is sent to second base station.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of data transmission method, In the case that one base station and the second base station carry out data transmission with user equipment, including：The first base station determines described Data distribution rule between one base station and second base station；The first base station is set to second base station and the user Preparation send data distribution to indicate, wherein the data distribution indicates to include the information of data distribution rule；First base Stand and descending data to be sent are divided into the descending data to be sent of Part I and Part II by data distribution rule Descending data to be sent；The first base station sends the descending data to be sent of the Part I to the user equipment；With And the first base station sends the descending data to be sent of the Part II to second base station, so that second base station The descending data to be sent of the Part II are sent to the user equipment.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of data transmission method, In the case that one base station and the second base station are carried out data transmission with UM patterns and user equipment, including：The user equipment from The first base station receives data distribution and indicated, wherein the data distribution indicates to include the first base station and second base The information of data distribution rule between standing；And the user equipment is indicated based on the data distribution, for described first Independent reorder timer and the window that reorders is safeguarded in base station and second base station respectively.
For above-mentioned data transmission method, in a kind of possible implementation, the coboundary of the timer that reorders The maximum sequence number for the packet being currently received for the user equipment；And the lower boundary of the timer that reorders is institute State user equipment is determined according to data distribution rule, first sequence number of packet for being not properly received.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of data transmission method, In the case that one base station and the second base station are carried out data transmission with AM patterns and user equipment, including：The user equipment from The first base station receives data distribution and indicated, wherein the data distribution indicates to include the first base station and second base The information of data distribution rule between standing；And the user equipment is indicated based on the data distribution, for described first The timer that reorders is safeguarded in base station and second base station respectively, and is independently entered based on the timer that reordered described in each Row state report is fed back.
It is described fixed based on being reordered described in each in a kind of possible implementation for above-mentioned data transmission method When device independently carry out state report feedback, including：The user equipment according to the data distribution rule, determine it is next most The sequence number of packet of confirmation may be properly received greatly as maximum possible ACK parameters；And the user equipment by really Fixed maximum possible ACK parameters are carried in the state report.
It is described fixed based on being reordered described in each in a kind of possible implementation for above-mentioned data transmission method When device independently carry out state report feedback, in addition to：The user equipment will be maximum determined by the first base station Possible ACK parameters and it is carried in the state report for maximum possible ACK parameters determined by second base station.
For above-mentioned data transmission method, in a kind of possible implementation, the data distribution indicates also to include table Show the positional information that the data distribution rule comes into effect.
For above-mentioned data transmission method, in a kind of possible implementation, the positional information be sequence number and/or Hyper Frame Number.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of base station equipment, including：Number According to diverter module, in the case of carrying out data transmission in first base station and the second base station with user equipment, it is determined that described Data distribution rule between first base station and second base station；Data distribution indicating module, with the data distribution module Connection, is indicated for sending data distribution to second base station and the user equipment, wherein the data distribution indicates bag The information of the rule containing the data distribution；And data division module, it is connected with the data distribution module, for by the number Descending data to be sent are divided into the descending data to be sent of Part I according to shunting rule and Part II is descending to be sent Data, so that the descending data to be sent of the Part I are sent to the user equipment, the Part II is descending pending Data are sent to send to second base station.
For above-mentioned base station equipment, in a kind of possible implementation, the data distribution indicates also to include representing institute State the positional information that data distribution rule comes into effect.
For above-mentioned base station equipment, in a kind of possible implementation, the positional information is sequence number and/or superframe Number.
In order to solve the above-mentioned technical problem, according to another aspect of the invention there is provided a kind of user equipment, including：Number Receiving module is indicated according to shunting, for situation about carrying out data transmission in first base station and the second base station with the user equipment Under, receive data distribution from the first base station and indicate, wherein, the data distribution indicates to include the first base station and described The information of data distribution rule between second base station；And the control module that reorders, indicate to receive mould with the data distribution Block is connected, for the feelings carried out data transmission in the first base station and second base station with UM patterns and the user equipment Under condition, indicated based on the data distribution, independent reorder is safeguarded respectively for the first base station and second base station Timer and the window that reorders, or carried out in the first base station and second base station with AM patterns and the user equipment In the case of data transfer, indicated, safeguarded respectively for the first base station and second base station based on the data distribution One timer that reorders, and state report feedback is independently carried out based on the timer that reordered described in each.
For above-mentioned user equipment, in a kind of possible implementation, the data distribution indicates also to include representing institute State the positional information that data distribution rule comes into effect.
For above-mentioned user equipment, in a kind of possible implementation, the positional information is sequence number and/or superframe Number.
Beneficial effect
By being for example uniformly controlled first base station and the second base station according to channel conditions and/or load state by first base station Between carrier aggregation when descending re-transmission task distribution, including determine it is descending retransmit website and make according to downstream state report determine Descending data to be retransmitted are sent to the user equipment, number according to the above embodiment of the present invention via the descending re-transmission website The feelings carried out data transmission in first base station and the second base station with user equipment can be prevented effectively from according to transmission method and device Under condition, because two station transmission conditions are different and cause re-ordering window to move slow and then cause what data transmission efficiency was reduced Problem, and because small base station does not know whether to carry out poorly efficient re-transmission caused by data re-transmission or asking of blindly retransmitting Topic.
In addition, by being for example uniformly controlled first base station and the according to channel conditions and/or load state by first base station Data distribution rule between two base stations during carrier aggregation, data transmission method and device according to the above embodiment of the present invention can The seamless switching of data distribution rule is realized, so as to be prevented effectively from the loss of packet or repeat to send.
According to below with reference to the accompanying drawings becoming to detailed description of illustrative embodiments, further feature of the invention and aspect It is clear.
Brief description of the drawings
Comprising in the description and constituting accompanying drawing and the specification of a part of specification and together illustrate the present invention's Exemplary embodiment, feature and aspect, and for explaining the principle of the present invention.
Fig. 1 shows the carrier aggregation schematic diagram of macro base station and small base station；
Fig. 2 a show the schematic diagram based on RLC PDU streamed datas；
Fig. 2 b show the schematic diagram carried out data transmission in the prior art based on RLC PDU with UM patterns；
Fig. 2 c show the schematic diagram carried out data transmission in the prior art based on RLC PDU with AM patterns；
Fig. 3 shows the flow chart of the descending re-transmission part of data transmission method according to an embodiment of the invention；
Fig. 3 a show the flow chart of the descending re-transmission part of a variation of the data transmission method shown in Fig. 3；
Fig. 4 shows the flow chart of the descending re-transmission part of data transmission method according to another embodiment of the present invention；
Fig. 5 shows the flow chart of the uplink retransmission part according to the data transmission method of further embodiment of this invention；
Fig. 5 a show the flow chart of the uplink retransmission part of a variation of data transmission method shown in Fig. 5；
Fig. 5 b show the flow chart of the uplink retransmission part of another variation of data transmission method shown in Fig. 5；
Fig. 6 shows the flow chart of the uplink retransmission part according to the data transmission method of further embodiment of this invention；
Fig. 7 shows the flow chart of the data transmission method according to further embodiment of this invention；
Fig. 8 shows the group of base station equipment according to an embodiment of the invention and user equipment according to an embodiment of the invention Into block diagram；
Fig. 9 shows base station equipment according to another embodiment of the present invention and user equipment according to another embodiment of the present invention Composition frame chart；
Figure 10 shows the composition frame chart of the base station equipment according to further embodiment of this invention；And
Figure 11 shows the composition frame chart of the user equipment according to further embodiment of this invention.
Embodiment
As described in background technology and Summary, present invention is directed primarily in a kind of data transmission method of offer, spy It is not the data transmission method under state of carrier aggregation, make it that carrier aggregation is not between carrier aggregation, especially grand small base station The lifting of data transmission efficiency can be influenceed.Also, to achieve these goals, present inventor is proposed by macro base station for example Re-transmission task distribution when being uniformly controlled carrier aggregation between grand small base station according to channel conditions and/or load state, especially under Row re-transmission task is distributed.
For example, according to the data transmission method of one embodiment of the invention, in first base station and the second base station and user In the case that equipment carries out data transmission, first base station for example can determine descending re-transmission according to channel conditions and/or load state Website；Also, first base station makes the descending data to be retransmitted according to determined by downstream state report send to user equipment.Example Such as, in the case where descending re-transmission website does not include the second base station, first base station will report the descending of determination according to downstream state Data to be retransmitted are sent to user equipment；And in the case where descending re-transmission website includes the second base station, first base station is by basis The part or all of transmission for the descending data to be retransmitted that downstream state report is determined is to the second base station, or by the second downstream state Report and/or the descending data to be retransmitted determined according to the report of the first downstream state are sent to the second base station, so that the second base station Partly or completely descending data to be retransmitted can be sent to user equipment.Wherein, descending re-transmission website is first base station Be used to send not successfully to the data of user equipment to user device transmissions first base station and the second base station in the second base station Website；Downstream state report expression user equipment receives the state of data from first base station and the second base station, it may include the One descending state report and/or the report of the second downstream state；First downstream state report expression user equipment connects from first base station Receive the state of data；And, the second downstream state report expression user equipment receives the state of data from the second base station.
Below will by macro base station of first base station, the second base station be that small base station and both of which are based on RLC PDU data shapes Several specific embodiments that formula and user equipment carry out data transmission describing this method in detail as example are as follows.
Embodiment 1
Fig. 3 shows the flow chart of the descending re-transmission part of data transmission method according to an embodiment of the invention.
As shown in figure 3, in the data transmission method, macro base station controls the website for descending re-transmission RLC data, by weight The passing RLC PDU of the task is assigned to the preferable website of channel quality (step S311, S312), and notifies small base station and UE (steps S321、S322)；Or, according to the demand of load balancing, macro base station is controlled descending to be carried out by way of diversity transmission Retransmit (step S313), i.e., (can be specially RLC PDU and/or PDU segmentation, wherein described for the data for needing descending re-transmission PDU segmentations refer to when retransmitting, the number formed when the RLC PDU retransmitted the need for original are carried out and split again According to bag), by macro base station and small base station common transport (step S353, S353N, S353Y), to accelerate the movement of window.Specifically Implementation process is as follows：
First, as shown in figure 3, macro base station can for example according to channel conditions and/or load state determine it is descending re-transmission website, It is responsible for retransmitting macro base station to user's equipment downward and/or small base station is previously unsuccessfully RLC PDU and/or the PDU segmentation of transmission Website.In a kind of possible implementation, macro base station receives the survey on macro base station and small base station of user equipment feedback Measure report message, and descending re-transmission website is determined according to measurement report and macro base station and load balancing demand of small base station etc.. In a kind of possible specific implementation, macro base station can determine that itself as descending re-transmission website (in Fig. 3 (a) section Step S311), it also can determine that small base station, as descending re-transmission website (the step S312 of (b) section in Fig. 3), can also be determined Macro base station and small base station carry out descending RLC PDU re-transmission (the step S313 of (c) section in Fig. 3) simultaneously.
It is determined that after descending re-transmission website, macro base station can send descending retransmit (step to small base station and user equipment Rapid S321, S322).In a kind of possible implementation, the descending retransmit at least includes representing by macro base station control The descending information for retransmitting website.In a kind of possible implementation, it is described descending heavy that descending retransmit may also include expression The information of website is passed, to notify small base station and user equipment to be responsible for carrying out the website of downlink retransmitted data.Alternatively possible In implementation, the descending retransmit includes representing whether small base station is determined as descending re-transmission website, represents small Whether base station will carry out the information of descending re-transmission, the situation whether small base station will be subjected to descending re-transmission notify to small base station and User equipment.
So, small base station can determine itself whether need to undertake retransmission downlink data according to the descending retransmit Task.If for example, descending re-transmission website indicated in the descending retransmit that small base station is received do not include small base station (referring to (a) section in Fig. 3), then small base station is only transmitted to the Initial R LC PDU that macro base station is forwarded, and success is not sent without transmitting RLC PDU or PDU be segmented to user equipment；Otherwise, small base station receives PDU or PDU points of RLC for needing to retransmit from macro base station Section ((b) and (c) section, step S352, S353Y in Fig. 3), and by these data packet retransmissions to UE.
In addition, user equipment can determine the feedback system of downstream state report according to the descending retransmit, exist Whether also need to report (step to small base station feedback downstream state outside to macro base station feeding back downlink state report (step S331) S332).Wherein, downstream state report expression user equipment receives the state of data from macro base station and small base station, it may include table Show that user equipment receives the first downstream state report of the state of data from macro base station and/or represents that user equipment connects from small base station Receive the second downstream state report of the state of data.In a kind of possible implementation, the downstream state report can be included The mark letter of all RLC PDU or PDU segmentations being not properly received before next RLC PDU for expecting to be properly received Breath.If for example, descending re-transmission website indicated in the descending retransmit that user equipment is received includes small base station (referring to figure (b) and (c) section in 3), then after the report of RLC downstream states is triggered, user equipment feeds back RLC to macro base station and small base station Downstream state is reported；Otherwise, user equipment only reports RLC downstream states to report ((a) section in Fig. 3) to macro base station.
Then, in the case where receiving the downstream state report (can be specially RLC state reports) of user equipment feedback (step S331), macro base station is reported according to the downstream state to be determined to need the RLC PDU or PDU that retransmit to be segmented, hereinafter referred to as For descending data (step S340) to be retransmitted, and the descending data to be retransmitted are sent via identified descending re-transmission website To user equipment (step S351, S352, S353, S353N, S353Y).
For example, determining that macro base station itself is responsible for carrying out the re-transmission of RLC PDU and/or PDU segmentation (referring to Fig. 3 in macro base station In (a) section, step S311), i.e. it is descending re-transmission website only include macro base station itself in the case of, small base station need not be set to user It is standby to retransmit RLC PDU and the PDU segmentation for needing to retransmit, but reported the downstream state fed back according to user equipment by macro base station Identified descending data to be retransmitted are sent to user equipment (step S351).
In another example, determine that the descending re-transmission of RLC PDU and/or PDU segmentation is responsible for carrying out (referring to figure in small base station in macro base station (b) section, step S312 in 3), i.e. it is descending re-transmission website only include small base station in the case of, macro base station will be anti-according to user equipment Descending data forwarding to be retransmitted determined by the downstream state report of feedback is to small base station (step S352), to enable small base station The descending data to be retransmitted are sent to user equipment.
For another example determining macro base station and small base station in macro base station while being required for being responsible for RLC PDU and/or PDU segmentation It is grand in the case of ((c) section, step S313 in Fig. 3), i.e. descending re-transmission website are retransmitted including macro base station itself and small base station Base station according to determining whether that small base station forwarding needs the RLC PDU or PDU that retransmit to be segmented (step S353) the need for transmission, Retransmitted so as to which the descending data to be retransmitted according to determined by the downstream state report that user equipment feeds back are divided into Part I Data and Part II retransmit data, and Part I re-transmission data are sent directly into user equipment (step S353N), and incite somebody to action Part II retransmits data and is forwarded to user equipment (step S353Y) via small base station.
In addition, as shown in figure 3, new measurement report of the macro base station also based on user equipment to report and/or new load are equal Weighing apparatus demand etc. redefines descending re-transmission website (step S312, S313).Although it should be noted that Fig. 3 shows macro base station First determine macro base station itself as it is descending re-transmission website, be then based on measurement report by it is descending re-transmission website be updated to small base Stand, descending re-transmission website is subsequently updated to by the example of macro base station and small base station based on measurement report again, but this area skill Art personnel will be understood that the invention is not restricted to this.In fact, each descending re-transmission website is for example according to channel by macro base station Macro base station, small base station, the appearance order of grand small base station are should not necessarily be limited by determined by situation and/or load state, and is measured Report, which is also only, can reflect an example of channel conditions.
By above-mentioned introduction, because macro base station for example can be uniformly controlled according to channel conditions and/or load state The distribution of re-transmission task, especially descending re-transmission task distribution between grand small base station during carrier aggregation, according to above-mentioned implementation of the invention The data transmission method of example can be prevented effectively from the case where macro base station and small base station carry out data transmission with user equipment, Because two station transmission conditions are different and cause re-ordering window to move slowly and then cause the problem of data transmission efficiency is reduced, And due to the problem of small base station does not know whether to carry out caused by data re-transmission poorly efficient re-transmission or blindly retransmitted.
Variation 1
Fig. 3 a show the flow chart of the descending re-transmission part of a variation of data transmission method shown in Fig. 3.Fig. 3 a get the bid Number there is identical function with Fig. 3 identical components, be concise see omitting the detailed description to these components.
As shown in Figure 3 a, the data transmission method is with the main distinction shown in Fig. 3, and macro base station only refers to descending re-transmission Show notice to small base station (step S321), without notifying to user equipment.In this case, due to that can not be retransmitted according to descending Indicate know by macro base station be uniformly controlled grand small base station between descending re-transmission task distribution, user equipment will conventionally represent from The first downstream state report that macro base station receives the state of data feeds back to macro base station (step S331a), and handle is represented from small base The the second downstream state report for the state for receiving data of standing feeds back to small base station (S332a).In other words, in order to realize to descending heavy What biography task was distributed is uniformly controlled, and macro base station needs to receive the second downstream state report (step from small base station as shown in Figure 3 a S332b)。
Embodiment 2
Fig. 4 shows the flow chart of the descending re-transmission part of data transmission method according to another embodiment of the present invention.In Fig. 4 Label has identical function with Fig. 3, Fig. 3 a identical components, for simplicity, omits the detailed description to these components.
As shown in figure 4, the main distinction shown in data transmission method and Fig. 3 shown in Fig. 4 is that macro base station only will be descending Retransmit is notified to small base station (step S421), not notified to user equipment；And user equipment then reports downstream state Feed back to default website (step S431), such as macro base station shown in Fig. 4.Wherein, the descending retransmit is mainly used in Indicate whether small base station is responsible for retransmitting RLC PDU or PDU segmentation.For example, it is descending to need small base station to carry out in macro base station When data are retransmitted, macro base station can send related downstream state report to small base station ((b) section, step S432 in Fig. 4). Further, macro base station macro base station in first transmission can also be carried out but need the data that be retransmitted in small base station send to Small base station ((b) section, step S452 in Fig. 4), so that the data are retransmitted into user equipment by small base station.Specific implementation process It is as follows：
First, as shown in figure 4, macro base station for example can determine descending re-transmission website according to channel conditions and/or load state. In a kind of possible specific implementation, macro base station can determine that descending re-transmission website does not include small base station (in Fig. 4 (a) Section, step S411), it also can determine that descending re-transmission website includes small base station ((b) section, step S412 in Fig. 4).
Then, macro base station sends descending retransmit (step S421, S422) to small base station, wherein the descending re-transmission refers to Show and be mainly used in indicating whether small base station needs to be responsible for carrying out downlink data re-transmission.It is described in a kind of possible implementation Descending retransmit can only include the configured information ((a) section, step S421 in Fig. 4) for whether performing RLC PDU re-transmissions, Or also can indicate that small base station needs to retransmit RLC PDU or the PDU segmentation by macro base station first transmission (in Fig. 4 (a) Section, step S422).
In a kind of possible implementation, small base station according to received descending retransmit determine it is local whether need Perform the re-transmission of RLC PDU or PDU segmentation.For example, it is determined that need to retransmit the RLC PDU of itself first transmission of small base station or In the case that PDU is segmented, the respective impact state report that small base station is based further on macro base station transmission determines the RLC for needing to retransmit PDU or PDU segmentations ((b) section, step S431, S441 in Fig. 4)；And, it is determined that needing re-transmission first by macro base station In the case of RLC PDU or the PDU segmentation of transmission, small base station further receives the RLC PDU retransmitted the need for macro base station is sent Or PDU segmentations ((b) section, step S452, S453 in Fig. 4).In a kind of possible specific implementation, small base station is always Minimum SN (Sequence Number, sequence number) in prioritised transmission RLC PDU or PDU segmentation to be retransmitted RLC PDU or Person PDU is segmented, the movement for the window that reordered with quickening.
It is identical with the data transmission method embodiment shown in Fig. 3, Fig. 3 a by above-mentioned introduction, due to macro base station energy It is enough re-transmission task distribution when being for example uniformly controlled carrier aggregation between grand small base station according to channel conditions and/or load state, outstanding It is descending re-transmission task distribution, and the data transmission method embodiment shown in Fig. 4 can be also prevented effectively from macro base station and small base Stand in the case of carrying out data transmission with user equipment, because two station transmission conditions are different and cause re-ordering window to move Slowly and then cause the problem of data transmission efficiency is reduced, and do not know whether to carry out data re-transmission due to small base station and The problem of caused poorly efficient re-transmission or blindly re-transmission.
Although it should be noted that Fig. 3 shows that the descending retransmit that user equipment is notified according to macro base station is determined to grand Base station and the mode of small base station feedback downstream state report, Fig. 3 a show that user equipment will conventionally represent to receive number from macro base station According to state the report of the first downstream state feed back to macro base station, by represent from small base station receive data state it is second descending State report feeds back to small base station, and Fig. 4 shows that user equipment is redefined for macro base station feeding back downlink state report As an example, but those skilled in the art will be understood that the invention is not restricted to this, user equipment completely can simultaneously to macro base station and The small report of the downstream state of base station feedback first and the report of the second downstream state, or even can also be only to macro base station or small base station Feed back the report of the first downstream state and the report of the second downstream state.No matter the downstream state report feedback system of user equipment is such as What, as long as descending re-transmission website finally can be based on use for example according to determined by channel conditions and/or load state for macro base station The downstream state report that family equipment is fed back determines descending data to be retransmitted.
Embodiment 3
Fig. 5 shows the flow chart of the uplink retransmission part according to the data transmission method of further embodiment of this invention.
As shown in figure 5, in the data transmission method, user equipment is according to the upper of macro base station and/or small base station feedback Row state report determines up data to be retransmitted, can be specially that RLC PDU or PDU are segmented after (step S511, S512), to institute The up data to be retransmitted determined perform cross-site re-transmission (step S521, S522), wherein uplink state report may include Represent that macro base station receives the first uplink state report of the state of data from user equipment and/or represents small base station from user equipment Receive the second uplink state report of the state of data.Receiving macro base station or (UL is authorized in the up of small base station scheduling When grant), user equipment is always prior to needing the RLC PDU of new biography, and using distributed UL grant to transmit needs to carry out RLC PDU or the PDU segmentation of re-transmission, but regardless of once which website transmission occurs at before these RLC PDU or PDU segmentation. That is, user equipment is determining how PDU or PDU points of the transmission RLC on macro base station and the UL grant of small base station distribution Duan Shi, it is not intended that the distribution website of the UL grant, the station of the last transmission of RLC PDU or PDU segmentation is not considered yet Point, and always preferential send needs the RLC PDU or PDU of uplink retransmission to be segmented on received UL grant.
For example, in a kind of possible specific implementation, user equipment can authorize up in the up of macro base station distribution Up data ((a) section in Fig. 5) to be retransmitted determined by sending the state report fed back according to macro base station itself, can be in macro base station Up transmission up data to be retransmitted (in Fig. 5 (b) according to determined by the state report of small base station feedback are authorized in the up of distribution Section), it can authorize up determined by the up state report for sending and being fed back according to small base station itself in the up of small base station distribution Data ((d) section in Fig. 5) to be retransmitted, can also authorize the up state for sending and being fed back according to macro base station in the up of small base station distribution Up data ((c) section in Fig. 5) to be retransmitted determined by report.
Variation 2
Fig. 5 a show the flow chart of the uplink retransmission part of the variation of data transmission method shown in Fig. 5.
As shown in Figure 5 a, the main distinction of the data transmission method compared with method shown in Fig. 5 is, by uplink retransmission number It is restricted on macro base station, i.e., is responsible for from macro base station to user equipment feeding back uplink state according to the re-transmission of (can be specially RLC PDU) Report, the wherein uplink state report can be the first uplink state reports of data receiving state generation of the macro base station based on itself Accuse, can also be the second uplink state report for being generated by data receiving state of the small base station based on itself and being forwarded to macro base station Accuse；Also, user equipment is responsible for sending the uplink retransmission data reported and determined according to received uplink state to macro base station. So, the renewal speed of the transmission window of macro base station side can be accelerated.
Variation 3
Fig. 5 b show the flow chart of the uplink retransmission part of another variation of data transmission method shown in Fig. 5.
As shown in Figure 5 b, the main distinction of the data transmission method compared with method shown in Fig. 5, Fig. 5 a is, will be up The re-transmission for retransmitting data (can be specially RLC PDU) is restricted on small base station, i.e., small base station is responsible for user equipment feeding back uplink The report of state report, the wherein uplink state can be the second up shape of data receiving state generation of the small base station based on itself State is reported, can also be the first uplink state for being generated by data receiving state of the macro base station based on itself and being forwarded to macro base station Report；Also, user equipment is responsible for sending the uplink retransmission number reported and determined according to received uplink state to small base station According to.So, the renewal speed of the transmission window of small base station side can be accelerated.
Embodiment 4
Fig. 6 shows the flow chart of the uplink retransmission part according to the data transmission method of further embodiment of this invention.
As shown in fig. 6, the main distinction shown in data transmission method and Fig. 5 shown in Fig. 6 is, in the transmission side data In method, macro base station with similar mode in embodiment 1 specify uplink retransmission website, be responsible for from user equipment receive it is previous not The website (step S611, S612, S613) to macro base station and/or the RLC PDU and/or PDU of small base station segmentation is successfully transmitted, and It is determined that uplink retransmission website rear line equipment, which sends uplink retransmission, indicates (step S620).Wherein, the uplink retransmission refers to Show the information at least including representing identified uplink retransmission website, so that obtaining user equipment can refer to according to the uplink retransmission Show the re-transmission that RLC PDU or PDU segmentation are carried out to indicated uplink retransmission website.
For example, in a kind of possible specific implementation, as shown in (a) section in Fig. 6, determining macro base station certainly in macro base station In the case that body is as uplink retransmission website (step S611), user equipment is receiving macro base station and/or small base station feedback In the case of uplink state report (step S631, S632), report that determination is up according to received uplink state and wait to retransmit Data (step S641), and identified up data to be retransmitted are sent to macro base station (step S651).
In another example, in alternatively possible specific implementation, as shown in (b) section in Fig. 6, small base is determined in macro base station In the case of standing as uplink retransmission website (step S612), user equipment is receiving macro base station and/or small base station feedback In the case of state report (step S631, S632), up data to be retransmitted are determined according to received uplink state report (step S642), and identified up data to be retransmitted are sent to small base station (step S652).
For another example in another possible specific implementation, as shown in (c) section in Fig. 6, grand base is determined in macro base station Itself stand with small base station while in the case of as uplink retransmission website (step S613), user equipment can be from macro base station and small base Stand and receive the uplink state report (step S631, S632) of macro base station and/or small base station feedback, and according to received shape State report is determined after up data (step S641, S642) to be retransmitted, and identified up data to be retransmitted are sent to phase The website (step S651, S652) answered.
In addition, as shown in fig. 6, new measurement report of the macro base station also based on user equipment to report and/or new load are equal Weighing apparatus demand etc. redefines descending re-transmission website (step S612, S613).Although it should be noted that Fig. 6 shows macro base station Determine first macro base station itself as uplink retransmission website, be then based on measurement report by uplink retransmission website and be updated to small base Stand, subsequently and uplink retransmission website be updated to the example of macro base station and small base station based on measurement report, but this area skill Art personnel will be understood that the invention is not restricted to this.In fact, each uplink retransmission website is for example according to channel by macro base station Macro base station, small base station, the appearance order of grand small base station are should not necessarily be limited by determined by situation and/or load state, and is measured Report, which is also only, can reflect an example of channel conditions.
Embodiment 5
Fig. 7 shows the flow chart of the data transmission method according to further embodiment of this invention.
As shown in fig. 7, in the data transmission method, the shunting of macro base station control data is regular, can be specially SN distribution rule Then, i.e., for the data on some DRB (Data Radio Bearer, Data Radio Bearer), macro base station side is sent out using which SN RLC PDU and small base station side is sent which SN to send RLC PDU using again, it is unified to be controlled by macro base station.It was embodied Journey is as follows：
When first, macro base station for example can determine carrier aggregation between grand small base station according to channel conditions and/or load state Data distribution rule, can be specially SN allocation rules (step S710), and via SN distribution indicate by identified SN distribute advise Then notify to small base station and user equipment (step S721, S722).For example, in a kind of possible implementation, macro base station institute The SN allocation rules of determination can be：As SN mod3 ≠ 0, the SN is used by small base station；And as SN mod3=0, it is described SN is used by macro base station.So, user equipment according to the SN distribute indicate it is known that, the RLC PDU that SN is 0,3,6 ... Will by macro base station send, and SN be 1,2,4,5,7,8 ... RLC PDU will be transmitted through too small base station.
Then, for UM patterns, user equipment is set up for macro base station and small base station respectively and safeguards independent reorder Timer and the window (step S730) that reorders.The upper bound that the timer that reorders is safeguarded is currently received SN maximums RLC PDU SN, the lower bound that the timer that reorders is safeguarded is to be not properly received according to first determined by SN allocation rules Packet SN.
And for AM patterns, user equipment is set up for macro base station and small base station and safeguards independent timing of reordering respectively Device (S741), and user equipment is when feeding back the report of RLC downstream states, can be based on two independent timer lists that reorder Solely state report feedback (step S742, S743) is carried out for macro base station and small base station.Wherein, in the RLC state reports VT (A) should be determined based on SN allocation rules.The VT (A) represents that receiving terminal has sequentially received ACK and (has been properly received really Recognize) RLC PDU next RLC PDU SN, otherwise referred to as next maximum possible ACK RLC PDU SN.
In a kind of possible implementation, user equipment can also feed back total when any RLC state reports are triggered RLC state reports, to cause macro base station and small base station it is known that the current substantially transmission state of both sides.Especially for grand base Stand, it is known that the actual reiving/transmitting state between small base station and user equipment, in order to which macro base station reconfigures SN allocation rules. In a kind of possible specific implementation, two VT (A) are carried in total RLC state reports, i.e., by macro base station side and small VT (A) value of base station side is all carried and reported in state report.For example, it is assumed that next maximum possible ACK of macro base station side The SN of bag is 7, and the SN of next maximum possible ACK of small base station side bag is 6, then in total RLC state reports, and 7 and 6 all To be reported respectively as VT (A).
In alternatively possible implementation, as shown in fig. 7, macro base station for example according to channel conditions and/or can also be born The change of load situation etc. carries out SN allocation rule renewals (step S750).When carrying out the renewal of SN allocation rules, macro base station needs Notify coming into force a little for small base station and the new SN allocation rules of user equipment.In a kind of possible implementation, macro base station to During the SN distribution of small base station and notification of user equipment is indicated, in addition to represent the positional information that SN allocation rules come into effect, example Such as come into effect or come into effect from which HFN (Hyper Frame Number) and SN from which SN.Or, in alternatively possible reality In existing mode, macro base station sends new rule to small base station and user equipment and starts to indicate, so as to obtain user equipment and small base station energy It is enough to be started to indicate to obtain the positional information that new SN allocation rules come into effect according to the new rule.So, due to realizing SN The seamless switching of allocation rule, can be prevented effectively from the loss of packet or repeat to send.
In addition, for up, macro base station can control user equipment toward macro base station and small by controlling SN allocation rules The RLC PDU that base station is sent.Has speech, macro base station and small base station maintenance two individually receive window, independently of each other to user Equipment feeds back RLC state reports, and the user equipment then state report based on macro base station and small base station feedback, respectively for grand base Stand and small base station carries out uplink retransmission.In other words, user equipment is always issued based on macro base station SN allocation rules determine RLC The uplink retransmission of PDU transmission website, i.e. RLC PDU or PDU segmentation is sent as first transmission according to SN allocation rules To corresponding website.
Embodiment 6
Fig. 8 shows base station equipment according to an embodiment of the invention and user equipment according to an embodiment of the invention Constitute the schematic block diagram of structure.
As shown in figure 8, the base station equipment 810 mainly include as first base station descending re-transmission website determining module 811, under Row retransmit module 812 and descending retransmission module 813, wherein：
Descending re-transmission website determining module 811 is mainly used in setting with user together in the base station 830 of first base station 810 and second In the case that standby 820 carry out data transmission, descending re-transmission website for example can be determined according to channel conditions and/or load state.Its In, it is described it is descending re-transmission website be the base station 830 of first base station 810 and second in be used for user equipment 820 transmit first base station 810 and second base station 830 send not successfully to the website of the data of user equipment 820.
Descending retransmit module 812 is mainly used in sending descending retransmit to the second base station 830, wherein described descending Retransmit is controlled the descending information for retransmitting website by first base station 810 comprising expression and/or represents the second base station 830 Whether the descending information that retransmits website is determined as.
Descending retransmission module 813 be mainly used in enabling being reported according to downstream state the descending data to be retransmitted that determine via The descending re-transmission website is sent to user equipment 820.Wherein, downstream state report expression user equipment 820 is from first base station 810 and second base station 830 receive data state, it may include the first downstream state report and/or the second downstream state report, First downstream state report expression user equipment 820 receives the state of data from first base station 810, and the second downstream state is reported Represent that user equipment 820 receives the state of data from the second base station 830.
For example, in the case where the descending re-transmission website does not include the second base station 830, descending retransmission module 813 can be by Reported according to the first downstream state and the descending data to be retransmitted of the second downstream state report determination are sent to user equipment 820；And, in the case where the descending re-transmission website includes the second base station 830, descending retransmission module 813 can be by according to institute State the part or all of hair for the descending data to be retransmitted that the report of the first downstream state and second downstream state report are determined The second base station 830 is delivered to, or second downstream state is reported and/or reports what is determined according to first downstream state Descending data to be retransmitted are sent to the second base station 830, so that the second base station 830 undertakes part or all of descending re-transmission task.
In a kind of possible specific implementation, descending retransmit module 812 is additionally configured to user equipment 820 (can be specially descending retransmit receiving module 821 therein) sends the descending retransmit.In this case, user Equipment (can be specially descending retransmission module 822 therein) can be received according to the descending retransmit from descending re-transmission website Downlink retransmitted data.Wherein, the downlink retransmitted data refers to descending re-transmission first base station of the website to user device transmissions 820 810 and second base station 830 be previously unsuccessfully send to user equipment 820 data.Further, since user equipment 820 (can have Body is that downstream state therein reports feedback module 823) it can be known according to the descending retransmit and be united by first base station 810 The distribution of the one descending re-transmission task of control, so as to which the report of the second downstream state directly is sent into first base station 810, this causes Descending retransmission module 813 in first base station 810 can also receive the report of the second downstream state from user equipment 820.
For example, in the case where the descending retransmit represents that the descending re-transmission website does not include the second base station 830, Downstream state report feedback module 823 can send the report of the first downstream state and the report of the second downstream state to first base station 810；And, in the case where the descending retransmit represents that the descending re-transmission website includes the second base station 830, descending shape State report feedback module 823 can be sent to first base station 810 by the report of the first downstream state and the report of the second downstream state Outside, also the report of the first downstream state and the report of the second downstream state are sent to the second base station 830.
However, not sending the situation of the descending retransmit to user equipment 820 in descending retransmit module 812 Under, descending retransmission module 813 may then need to receive the report of the second downstream state from the second base station 830.
In addition, as shown in figure 8, in a kind of possible implementation, user equipment 820 may also include up number to be retransmitted According to determining module 824 and uplink retransmission module 825, wherein：
Up data determining module to be retransmitted 824 is mainly used in setting with user in the base station 830 of first base station 810 and second In the case that standby 820 carry out data transmission, up data to be retransmitted are determined according to uplink state report.Wherein, uplink state report Accuse the state for representing that the base station 830 of first base station 810 and second receives data from user equipment, it may include the first uplink state bag Include and/or the report of the second uplink state, the first uplink state report expression first base station 810 receives data from user equipment 820 State, and second the second base station of uplink state report expression 830 from user equipment 820 receive data state.
Uplink retransmission module 825 is mainly used in waiting to retransmit by up determined by up data determining module 824 to be retransmitted Data are sent to uplink retransmission website.Wherein, the uplink retransmission website be the base station 830 of first base station 810 and second in be used for It is responsible for being previously unsuccessfully transmission to the base station 830 of first base station 810 and/or second from the reception user equipment 820 of user equipment 820 The website of data.
For example, the uplink retransmission website can be predetermined to be first base station 810, the second base station 830 can be also predetermined to be.
In another example, the uplink retransmission website can give user equipment to be current in the base station 830 of first base station 810 and second 820 are assigned with the up website authorized, so that obtaining user equipment 820 is always capable of the data that prioritised transmission needs to retransmit, without The data, which are managed, in first pass is sent to the base station 830 of first base station 810 or second.
For another example can be by first base station 810 (can be specially uplink retransmission website determining module 814 therein) such as basis Actual channel conditions and/or load state determine and updated the uplink retransmission website.In this case, first base station 810 (can be specially uplink retransmission indicating module 815 therein) will send uplink retransmission instruction to user equipment 820.Wherein, institute State uplink retransmission to indicate comprising the information for representing the uplink retransmission website, so as to obtain the uplink retransmission mould in user equipment 820 Block 825 can be sent to the uplink retransmission website accordingly needs the data of uplink retransmission.
Embodiment 7
Fig. 9 shows that base station equipment according to another embodiment of the present invention and user according to another embodiment of the present invention set The schematic block diagram of standby composition structure.
As shown in figure 9, the base station equipment 910 may include data distribution module 911, the sum of data distribution indicating module 912 According to division module 913, wherein：
Data distribution module 911 is mainly used in for example determining the He of first base station 910 according to channel conditions and/or load state Data distribution rule between second base station 930.Data division module is mainly used in treating descending by data distribution rule Send data and be divided into the descending data to be sent of Part I and the descending data to be sent of Part II, so that described first Point descending data to be sent will be sent directly to user equipment 920 by first base station 910 and the Part II is descending to be sent Data will be forwarded to user equipment 920 via the second base station 930.
Wherein, the data distribution rule can be specially SN allocation rules, i.e., for some DRB (Data Radio Bearer, Data Radio Bearer) on data, macro base station side to send RLC PDU using at which SN and small base station side is used again Which SN sends RLC PDU.For example, SN allocation rules can be：As SN mod3 ≠ 0, the SN is used by small base station；And As SN mod3=0, the SN is used by macro base station.So, user equipment according to the SN distribute indicate it is known that, SN The RLC PDU that RLC PDU for 0,3,6 ... will be sent by macro base station, and SN is 1,2,4,5,7,8 ... will enter through too small base station Row is sent.In a kind of possible specific implementation, the data distribution indicates to may also include the expression data distribution rule The positional information then come into effect, the sequence number and/or Hyper Frame Number for example come into effect.
It (can be specially that data distribution therein indicates to connect that data distribution indicating module 912, which is mainly used in user equipment 920, Receive module 921) and the second base station 930 transmission data distribution instruction.Wherein, the data distribution, which indicates to comprise at least, represents described The information of data distribution rule, to enable the second base station 930 to know the data of itself needss transmission, and user equipment accordingly 920 (can be specially the control module 922 therein that reorders) can be distinguished for the base station 930 of first base station 910 and second accordingly Set up and safeguard various windows.
For example, the feelings carried out data transmission in the base station 930 of first base station 910 and second with UM patterns and user equipment 920 Under condition, the control module that reorders 922 can be distinguished based on data distribution rule for the base station 930 of first base station 910 and second Safeguard independent reorder timer and the window that reorders.
In another example, carried out data transmission in the base station 930 of first base station 910 and second with AM patterns and user equipment 920 In the case of, the control module that reorders 922 can be based on data distribution rule, for 930 points of 910 and second base station of first base station Not Wei Hu the timer that reorder, and state report feedback is independently carried out based on the timer that reorders described in each.
Embodiment 8
Figure 10 shows a kind of structured flowchart of base station equipment of an alternative embodiment of the invention.The base station equipment 1000 can be host server, personal computer PC or portable portable computer or the end for possessing computing capability End etc..The specific embodiment of the invention is not limited implementing for calculate node.
The base station equipment 1000 includes processor (processor) 1010, communication interface (Communications Interface) 1020, memory (memory array) 1030 and bus 1040.Wherein, processor 1010, communication interface 1020 and memory 1030 mutual communication is completed by bus 1040.
Communication interface 1020 is used to communicate with network element, and wherein network element is included such as Virtual Machine Manager center, shared storage.
Processor 1010 is used for configuration processor.Processor 1010 is probably a central processor CPU, or special collection Into circuit ASIC (Application Specific Integrated Circuit), or it is arranged to implement the present invention One or more integrated circuits of embodiment.
Memory 1030 is used to deposit file.Memory 1030 may include high-speed RAM memory, it is also possible to also including non- Volatile memory (non-volatile memory), for example, at least one magnetic disk storage.Memory 1030 can also be deposited Memory array.Memory 1030 is also possible to by piecemeal, and described piece can be combined into virtual volume by certain rule.
In a kind of possible embodiment, said procedure can be to include the program code of computer-managed instruction.The journey Sequence is particularly used in, and in the case where first base station and the second base station carry out data transmission with user equipment, makes described first Base station：Descending re-transmission website is determined, wherein the descending re-transmission website is to be used in the first base station and second base station Sent not successfully to the data of the user equipment to first base station described in the user device transmissions and second base station Website；And make to report that the descending data to be retransmitted determined are sent to institute via the descending re-transmission website according to downstream state User equipment is stated, wherein user equipment described in the downstream state report expression is from the first base station and second base station Receive the state of data.
In alternatively possible implementation, said procedure can be to include the program code of computer-managed instruction.Should Program is particularly used in, in the case where first base station and the second base station carry out data transmission with user equipment, makes described One base station：Determine the data distribution rule between the first base station and second base station；To second base station and described User equipment sends data distribution and indicated, wherein the data distribution indicates to include the information of data distribution rule；By institute State that descending data to be sent are divided into the descending data to be sent of Part I by data distribution rule and Part II is descending treats Send data；The descending data to be sent of the Part I are sent to the user equipment；And by under the Part II Row data to be sent are sent to second base station, so that the descending data to be sent of the Part II are sent out in second base station Deliver to the user equipment.
Embodiment 9
Figure 11 shows a kind of structured flowchart of base station equipment of an alternative embodiment of the invention.The base station equipment 1100 can be host server, personal computer PC or portable portable computer or the end for possessing computing capability End etc..The specific embodiment of the invention is not limited implementing for calculate node.
The base station equipment 1100 includes processor (processor) 1110, communication interface (Communications Interface) 1120, memory (memory array) 1130 and bus 1140.Wherein, processor 1110, communication interface 1120 and memory 1130 mutual communication is completed by bus 1140.
Communication interface 1120 is used to communicate with network element, and wherein network element is included such as Virtual Machine Manager center, shared storage.
Processor 1110 is used for configuration processor.Processor 1110 is probably a central processor CPU, or special collection Into circuit ASIC (Application Specific Integrated Circuit), or it is arranged to implement the present invention One or more integrated circuits of embodiment.
Memory 1130 is used to deposit file.Memory 1130 may include high-speed RAM memory, it is also possible to also including non- Volatile memory (non-volatile memory), for example, at least one magnetic disk storage.Memory 1130 can also be deposited Memory array.Memory 1130 is also possible to by piecemeal, and described piece can be combined into virtual volume by certain rule.
In a kind of possible embodiment, said procedure can be to include the program code of computer-managed instruction.The journey Sequence is particularly used in, and in the case where first base station and the second base station carry out data transmission with user equipment, makes the user Equipment：Up data to be retransmitted are determined according to uplink state report, wherein, first base station described in the uplink state report expression And second base station receives the state of data from the user equipment；And the up data to be retransmitted are sent supreme Row retransmits website, wherein the uplink retransmission website be the first base station and default website in second base station or The website specified in being indicated for the uplink retransmission that is received from the first base station or be the first base station and described second Currently the up website authorized is assigned with base station to the user equipment.
In alternatively possible embodiment, said procedure can be to include the program code of computer-managed instruction.Should Program is particularly used in, and in the case where first base station and the second base station carry out data transmission with user equipment, makes the use Family equipment：Descending retransmit is received from the first base station, wherein, the descending retransmit includes descending re-transmission website Information, the descending re-transmission website is to be used for described in the user device transmissions in the first base station and second base station First base station and second base station are sent to the website of the data of the user equipment not successfully；And according to described descending Retransmit from it is described it is descending re-transmission website receive downlink retransmitted data, wherein the downlink retransmitted data refer to it is described descending heavy Website is passed to set to failed send to the user of the first base station of the user device transmissions and second base station Standby data.
In alternatively possible embodiment, said procedure can be to include the program code of computer-managed instruction.Should Program is particularly used in, in the case where first base station and the second base station are carried out data transmission with UM patterns and user equipment, Make the user equipment：Data distribution is received from the first base station to indicate, wherein the data distribution is indicated comprising described the The information of data distribution rule between one base station and second base station；And indicated based on the data distribution, for institute State first base station and independent reorder timer and the window that reorders is safeguarded in second base station respectively.
In alternatively possible embodiment, said procedure can be to include the program code of computer-managed instruction.Should Program is particularly used in, in the case where first base station and the second base station are carried out data transmission with AM patterns and user equipment, Make the user equipment：Data distribution is received from the first base station to indicate, wherein the data distribution is indicated comprising described the The information of data distribution rule between one base station and second base station；And indicated based on the data distribution, for institute State first base station and the timer that reorders is safeguarded in second base station respectively, and it is only based on the timer that reordered described in each On the spot carry out state report feedback.
Those of ordinary skill in the art are it is to be appreciated that each exemplary cell and algorithm in embodiment described herein Step, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions actually with hardware also It is software form to realize, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel can be directed to Specific application selects different methods to realize described function, but this realization is it is not considered that beyond the model of the present invention Enclose.
If using in the form of computer software come realize the function and as independent production marketing or in use, if To a certain extent it is believed that all or part (such as the part contributed to prior art) of technical scheme is Embody in form of a computer software product.The computer software product is generally stored inside the storage medium of embodied on computer readable In, including some instructions are to cause computer equipment (can be personal computer, server or network equipment etc.) to perform The all or part of step of various embodiments of the present invention method.And foregoing storage medium includes USB flash disk, mobile hard disk, read-only storage Device (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or light Disk etc. is various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, and also may be used With consider by invent applied to LTE-A heterogeneous network in, any one skilled in the art the invention discloses Technical scope in, change or replacement can be readily occurred in, should be all included within the scope of the present invention.Therefore, it is of the invention Protection domain described should be defined by scope of the claims.

Claims (48)

1. a kind of data transmission method, it is characterised in that carry out data biography with user equipment in first base station and the second base station In the case of defeated, including：
The first base station determines descending re-transmission website, wherein the descending re-transmission website is the first base station and described second It is used to send not successfully to the user to first base station described in the user device transmissions and second base station in base station The website of the data of equipment；And
The first base station makes to be reported the descending data to be retransmitted determined via the descending re-transmission website hair according to downstream state The user equipment is delivered to, wherein user equipment described in the downstream state report expression is from the first base station and described Two base stations receive the state of data.
2. data transmission method according to claim 1, it is characterised in that it is descending that the downstream state report includes first State report and the report of the second downstream state, wherein,
User equipment described in the first downstream state report expression receives the state of data from the first base station, and
User equipment described in the second downstream state report expression receives the state of data from second base station.
3. data transmission method according to claim 1 or 2, it is characterised in that make in the first base station according to descending The descending data to be retransmitted that state report is determined are sent to before the user equipment via the descending re-transmission website, in addition to The first base station sends descending retransmit to second base station, wherein the descending retransmit is comprising described descending heavy The information of website is passed, the descending information for retransmitting website includes at least one in following message：
Represent to control the descending information for retransmitting website by the first base station,
The descending identification information for retransmitting website,
The identification information of the descending cell for retransmitting website,
Represent whether second base station is determined as the descending information for retransmitting website, and
Represent whether the first base station is determined as the descending information for retransmitting website.
4. data transmission method according to claim 1 or 2, it is characterised in that the first base station makes according to descending shape The descending data to be retransmitted that state report is determined are sent to the user equipment via the descending re-transmission website to be included：Under described In the case that row re-transmission website does not include second base station,
The first base station will report that the descending data to be retransmitted determined are sent to the user equipment according to the downstream state.
5. data transmission method according to claim 1 or 2, it is characterised in that the first base station makes according to descending shape The descending data to be retransmitted that state report is determined are sent to the user equipment via the descending re-transmission website to be included：Under described In the case that row re-transmission website includes second base station,
The first base station will report the part or all of transmission of the descending data to be retransmitted determined extremely according to the downstream state Second base station, so that second base station can use the part or all of transmission of the descending data to be retransmitted to described Family equipment.
6. data transmission method according to claim 2, it is characterised in that the first base station makes according to downstream state report Accusing the descending data to be retransmitted determined and being sent via the descending re-transmission website to the user equipment includes：Described descending heavy In the case that biography website includes second base station,
Second downstream state is reported and/or reports the descending of determination according to first downstream state by the first base station Data to be retransmitted are sent to second base station, so that second base station can will report true according to second downstream state Fixed descending data to be retransmitted and/or the descending data to be retransmitted determined according to first downstream state report are sent to described User equipment.
7. data transmission method according to claim 3, it is characterised in that make in the first base station according to downstream state Report that the descending data to be retransmitted determined are sent to before the user equipment via the descending re-transmission website, in addition to：
The first base station sends the descending retransmit to the user equipment.
8. the data transmission method according to any one of claim 1,2 and 6, it is characterised in that in the first base station Make to report that the descending data to be retransmitted determined are sent to the user equipment via the descending re-transmission website according to downstream state Before, in addition to：
The first base station receives the downstream state report from second base station；Or
The first base station sends the downstream state to second base station and reported.
9. the data transmission method according to any one of claim 1,2,6 and 7, it is characterised in that also include：
The first base station determines uplink retransmission website, wherein the uplink retransmission website is the first base station and described second It is used to receive the failed transmission of the user equipment to the first base station and/or described second from the user equipment in base station The website of the data of base station；And
The first base station sends uplink retransmission to the user equipment and indicated, wherein the uplink retransmission indicates to include on described Row retransmits the information of website.
10. data transmission method according to claim 9, it is characterised in that determine uplink retransmission in the first base station After website, in addition to：
The first base station sends the uplink retransmission to second base station and indicated.
11. a kind of data transmission method, it is characterised in that carry out data biography with user equipment in first base station and the second base station In the case of defeated, including：
The user equipment determines up data to be retransmitted according to uplink state report, wherein, the uplink state report expression The first base station and second base station receive the state of data from the user equipment；And
The user equipment sends the up data to be retransmitted to uplink retransmission website, wherein the uplink retransmission website is The first base station and default website in second base station or refer to for the uplink retransmission received from the first base station Show the website specified or up to be currently assigned with the first base station and second base station to the user equipment The website authorized.
12. data transmission method according to claim 11, it is characterised in that the uplink state report is included on first Row state report and the report of the second uplink state, wherein
First base station described in the first uplink state report expression receives the state of data from the user equipment；And
Second base station described in the second uplink state report expression receives the state of data from the user equipment.
13. a kind of data transmission method, it is characterised in that carry out data biography with user equipment in first base station and the second base station In the case of defeated, including：
The user equipment receives descending retransmit from the first base station, wherein, the descending retransmit is comprising descending Retransmit the information of website, the descending re-transmission website is to be used to set to the user in the first base station and second base station The standby first base station and second base station of transmitting is sent to the website of the data of the user equipment not successfully；And
The user equipment receives downlink retransmitted data, wherein institute according to the descending retransmit from the descending re-transmission website Stating downlink retransmitted data refers to the descending website that retransmits to the first base station of the user device transmissions and described the Two base stations are sent to the data of the user equipment not successfully.
14. data transmission method according to claim 13, it is characterised in that in the user equipment according to described descending Retransmit is received from the descending re-transmission website before downlink retransmitted data, in addition to：
The user equipment sends downstream state report to the first base station according to the descending retransmit, wherein described User equipment described in downstream state report expression receives the state of data from the first base station and second base station.
15. data transmission method according to claim 14, it is characterised in that the downstream state report is included under first Row state report and the report of the second downstream state, wherein, user equipment described in the first downstream state report expression is from described First base station receives the state of data, and
User equipment described in the second downstream state report expression receives the state of data from second base station.
16. the data transmission method according to claims 14 or 15, it is characterised in that in the user equipment according to described Descending retransmit is received from the descending re-transmission website before downlink retransmitted data, in addition to：
In the case where the descending re-transmission website includes second base station, the user equipment is also by the downstream state report Accuse and deliver to second base station.
17. the data transmission method according to any one of claim 1,2,6,7,10 to 15, it is characterised in that
The first base station is macro base station,
Second base station is small base station, and
The cell coverage area of the macro base station is bigger than the cell coverage area of the small base station.
18. the data transmission method according to any one of claim 1,2,6,7,10 to 15, it is characterised in that
The state report is RLC state reports, and
Descending data to be retransmitted and up data to be retransmitted are RLC PDU and/or PDU segmentation to be retransmitted.
19. a kind of base station equipment, it is characterised in that including：
Descending re-transmission website determining module, for the base station equipment as first base station and the second base station and user equipment In the case of carrying out data transmission, descending re-transmission website is determined, wherein the descending re-transmission website is the first base station and institute State is used to send not successfully to institute to first base station described in the user device transmissions and second base station in the second base station State the website of the data of user equipment；And
Descending retransmission module, is connected with the descending re-transmission website determining module, for making to report what is determined according to downstream state Descending data to be retransmitted are sent to the user equipment via the descending re-transmission website, wherein, the downstream state account Show that the user equipment receives the state of data from the first base station and second base station.
20. base station equipment according to claim 19, it is characterised in that the downstream state report includes the first descending shape State is reported and the second downstream state is reported, wherein：
User equipment described in the first downstream state report expression receives the state of data from the first base station, and
User equipment described in the second downstream state report expression receives the state of data from second base station.
21. the base station equipment according to claim 19 or 20, it is characterised in that also including true with the descending re-transmission website The descending retransmit module of cover half block connection, the descending retransmit module is used to send descending heavy to second base station Pass and indicate, wherein the descending retransmit includes the descending information for retransmitting website, the descending information for retransmitting website Including at least one in following message：
Represent to control the descending information for retransmitting website by the first base station,
The descending identification information for retransmitting website,
The identification information of the descending cell for retransmitting website,
Represent whether second base station is determined as the descending information for retransmitting website, and
Represent whether the first base station is determined as the descending information for retransmitting website.
22. the base station equipment according to claim 19 or 20, it is characterised in that the descending retransmission module is configured as： In the case where the descending re-transmission website does not include second base station,
It will report that the descending data to be retransmitted determined are sent to the user equipment according to the downstream state.
23. the base station equipment according to claim 19 or 20, it is characterised in that the descending retransmission module is configured as： In the case where the descending re-transmission website includes second base station,
The part or all of transmission of descending data to be retransmitted of determination will be reported according to the downstream state to second base station, So that second base station can be by the part or all of transmission of the descending data to be retransmitted to the user equipment.
24. base station equipment according to claim 20, it is characterised in that the descending retransmission module is configured as：Institute State it is descending re-transmission website include second base station in the case of,
Second downstream state is reported and/or reports that the descending data to be retransmitted determined are sent out according to first downstream state Second base station is delivered to, so that second base station can will report that weight is treated in the descending of determination according to second downstream state Pass data and/or report that the descending data to be retransmitted determined are sent to the user equipment according to first downstream state.
25. base station equipment according to claim 21, it is characterised in that
The descending retransmit module is additionally configured to send the descending retransmit to the user equipment.
26. the base station equipment according to any one of claim 19,20,24 and 25, it is characterised in that
The descending retransmission module is additionally configured to receive the downstream state report from second base station；Or
The descending retransmission module is additionally configured to send the downstream state report to second base station.
27. the base station equipment according to any one of claim 19,20,24 and 25, it is characterised in that also include：
Uplink retransmission website determining module, for determining uplink retransmission website, wherein the uplink retransmission website is described first It is used to receive the failed transmission of the user equipment to first base from the user equipment in base station and second base station Stand and/or second base station data website；And
Uplink retransmission indicating module, is connected with the uplink retransmission website determining module, for being sent to the user equipment Row retransmit, wherein the uplink retransmission indicates the information for including the uplink retransmission website.
28. base station equipment according to claim 27, it is characterised in that
The uplink retransmission indicating module is additionally configured to send the uplink retransmission instruction to second base station.
29. a kind of user equipment, it is characterised in that including：
Up data determining module to be retransmitted, for carrying out data biography with the user equipment in first base station and the second base station In the case of defeated, up data to be retransmitted are determined according to uplink state report, wherein, the described in the uplink state report expression One base station and second base station receive the state of data from the user equipment；And
Uplink retransmission module, is connected with the up data determining module to be retransmitted, for the up data to be retransmitted to be sent out Uplink retransmission website is delivered to, wherein the uplink retransmission website is the default station in the first base station and second base station Point or the website specified in being indicated for the uplink retransmission that is received from the first base station or be the first base station and Currently the up website authorized is assigned with second base station to the user equipment.
30. user equipment according to claim 29, it is characterised in that the uplink state report includes the first up shape State is reported and the second uplink state is reported, wherein：
First base station described in the first uplink state report expression receives the state of data from the user equipment, and
Second base station described in the second uplink state report expression receives the state of data from the user equipment.
31. a kind of user equipment, it is characterised in that including：
Descending retransmit receiving module, for carrying out data transmission in first base station and the second base station with the user equipment In the case of, descending retransmit is received from the first base station, wherein, the descending retransmit includes descending re-transmission website Information, the descending re-transmission website is for the user device transmissions institute in the first base station and second base station First base station and second base station is stated to send not successfully to the website of the data of the user equipment；And
Descending retransmission module, is connected with the descending retransmit receiving module, for according to the descending retransmit from institute State descending re-transmission website and receive downlink retransmitted data, wherein the downlink retransmitted data refers to the descending re-transmission website to described The first base station of user device transmissions and second base station are sent to the data of the user equipment not successfully.
32. user equipment according to claim 31, it is characterised in that also include：
Downstream state reports feedback module, is connected with the descending retransmit receiving module, for according to the descending re-transmission Indicate, by downstream state report send to the first base station, wherein, user equipment described in the downstream state report expression from The first base station and second base station receive the state of data.
33. user equipment according to claim 32, it is characterised in that the downstream state report includes the first descending shape State is reported and the second downstream state is reported, wherein：
User equipment described in the first downstream state report expression receives the state of data from the first base station, and
User equipment described in the second downstream state report expression receives the state of data from second base station.
34. the user equipment according to claim 32 or 33, it is characterised in that
The downstream state report feedback module is additionally configured to, and the descending re-transmission website is represented in the descending retransmit In the case of including second base station, also the report of the first downstream state and the report of the second downstream state are sent to described the Two base stations.
35. a kind of data transmission method, it is characterised in that carry out data biography with user equipment in first base station and the second base station In the case of defeated, including：
The first base station is determined between the first base station and second base station according to channel conditions and/or load state Data distribution rule；
The first base station sends data distribution to second base station and the user equipment and indicated, wherein the data distribution Indicate the information for including data distribution rule；
Descending data to be sent are divided into the descending number to be sent of Part I by the first base station by data distribution rule According to this and the descending data to be sent of Part II；
The first base station sends the descending data to be sent of the Part I to the user equipment；And
The first base station sends the descending data to be sent of the Part II to second base station, so that second base Stand and send the descending data to be sent of the Part II to the user equipment.
36. a kind of data transmission method, it is characterised in that entered in first base station and the second base station with UM patterns and user equipment In the case of row data transfer, including：
The user equipment receives data distribution from the first base station and indicated, wherein the data distribution is indicated comprising described the The information of data distribution rule between one base station and second base station；And
The user equipment is indicated based on the data distribution, is safeguarded respectively solely for the first base station and second base station Vertical reorder timer and the window that reorders.
37. data transmission method according to claim 36, it is characterised in that
The coboundary of the timer that reorders is the maximum sequence number for the packet that the user equipment is currently received；And
The lower boundary of the timer that reorders be the user equipment according to the data distribution rule determine, first do not have There is the sequence number for the packet being properly received.
38. a kind of data transmission method, it is characterised in that entered in first base station and the second base station with AM patterns and user equipment In the case of row data transfer, including：
The user equipment receives data distribution from the first base station and indicated, wherein the data distribution is indicated comprising described the The information of data distribution rule between one base station and second base station；And
The user equipment is indicated based on the data distribution, and one is safeguarded respectively for the first base station and second base station The individual timer that reorders, and state report feedback is independently carried out based on the timer that reordered described in each.
39. the data transmission method according to claim 38, it is characterised in that described based on timing of being reordered described in each Device independently carries out state report feedback, including：
The user equipment determines that next maximum possible is properly received the packet of confirmation according to data distribution rule Sequence number is used as maximum possible ACK parameters；And
Identified maximum possible ACK parameters are carried in the state report by the user equipment.
40. the data transmission method according to claim 39, it is characterised in that described based on timing of being reordered described in each Device independently carries out state report feedback, in addition to：
The user equipment will be for maximum possible ACK parameters determined by the first base station and for second base station Identified maximum possible ACK parameters are carried in the state report.
41. the data transmission method according to any one of claim 35 to 40, it is characterised in that the data distribution refers to Showing also includes the positional information for representing that the data distribution rule comes into effect.
42. data transmission method according to claim 41, the positional information is sequence number and/or Hyper Frame Number.
43. a kind of base station equipment, it is characterised in that including：
Data distribution module, in the case of carrying out data transmission in first base station and the second base station with user equipment, root The data distribution rule between the first base station and second base station is determined according to channel conditions and/or load state；
Data distribution indicating module, is connected with the data distribution module, for second base station and the user equipment Send data distribution to indicate, wherein the data distribution indicates to include the information of data distribution rule；And
Data division module, is connected with the data distribution module, for regular by descending number to be sent by the data distribution According to the descending data to be sent of Part I and the descending data to be sent of Part II are divided into, so that the Part I is descending Data to be sent send to the user equipment that the descending data to be sent of the Part II are sent to second base station.
44. base station equipment according to claim 43, it is characterised in that the data distribution indicates also to include representing described The positional information that data distribution rule comes into effect.
45. base station equipment according to claim 44, the positional information is sequence number and/or Hyper Frame Number.
46. a kind of user equipment, it is characterised in that including：
Data distribution indicates receiving module, for carrying out data transmission in first base station and the second base station with the user equipment In the case of, receive data distribution from the first base station and indicate, wherein, the data distribution indicates to include the first base station The information of data distribution rule between second base station；And
Reorder control module, indicates that receiving module is connected with the data distribution, is used for
In the case where the first base station and second base station are carried out data transmission with UM patterns and the user equipment, base Indicated in the data distribution, for the first base station and second base station safeguard respectively it is independent reorder timer and Reorder window；Or
In the case where the first base station and second base station are carried out data transmission with AM patterns and the user equipment, base Indicated in the data distribution, the timer that reorders is safeguarded respectively for the first base station and second base station, and Based on being reordered described in each, timer independently carries out state report feedback.
47. user equipment according to claim 46, it is characterised in that the data distribution indicates also to include representing described The positional information that data distribution rule comes into effect.
48. user equipment according to claim 47, the positional information is sequence number and/or Hyper Frame Number.
CN201310222262.8A 2013-06-05 2013-06-05 Data transmission method and device Active CN104219034B (en)

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CN105101285A (en) * 2015-05-26 2015-11-25 北京邮电大学 Data transmission method, macro station and micro station
CN109479271A (en) * 2016-08-15 2019-03-15 华为技术有限公司 Data transmission method, device and system
WO2018212690A1 (en) 2017-05-16 2018-11-22 Telefonaktiebolaget Lm Ericsson (Publ) Method, network node and user equipment of a wireless network for handling a user equipment
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