CN102739379A

CN102739379A - Data transmission method and equipment

Info

Publication number: CN102739379A
Application number: CN2012101921387A
Authority: CN
Inventors: 方晓波; 佟国旭; 吴群英; 汝聪翀; 柳敦
Original assignee: Innofidei Technology Co Ltd
Current assignee: Beijing Boxin Shitong Technology Co ltd; Innofidei Technology Co Ltd
Priority date: 2012-06-11
Filing date: 2012-06-11
Publication date: 2012-10-17
Anticipated expiration: 2032-06-11
Also published as: CN102739379B

Abstract

The invention discloses a data transmission method and data transmission equipment. The method comprises the following steps that: when distance between the data transmission equipment and an opposite end of the data transmission equipment is greater than a distance threshold value, the data transmission equipment acquires the maximum process number of a hybrid automatic repeat request which is employed for data transmission, wherein the maximum process number of the hybrid automatic repeat request is obtained according to the data processing time delay of the data transmission equipment, the data processing time delay of the opposite end of the data transmission equipment and the distance between the data transmission equipment and the opposite end of the data transmission equipment; and the data transmission equipment transmits data to the opposite end of the data transmission equipment according to the maximum process number of the hybrid automatic repeat request. The technical scheme provided by the invention is applicable to a large-coverage scene of which cell radius is more than 100 km, and can effectively ensure data transmission efficiency under the condition of large coverage.

Description

Data transmission method and equipment

Technical field

The embodiment of the invention relates to the mobile communication technology field, particularly a kind of data transmission method and equipment.

Background technology

In cell mobile communication systems, current mobile communication technology has combined OFDM (Orthogonal Frequency Division Multiplexing; OFDM) and multiple-input and multiple-output (Multiple-Input Multiple-Out-put; MIMO) Long Term Evolution (Long Term Evolution; LTE) key technology.LTE R8 technology can realize that user throughput, spectrum efficiency and mobility reach third generation partner program (3rd Generation Partnership Project respectively; International standard demand 3GPP) realizes under the 20M bandwidth that just instantaneous peak value speed satisfies the design object of the instantaneous up peak rate (peaks spectrum efficient 2.5bit/s/Hz) of 100Mbit/s (spectrum efficiency 5bit/s/Hz), 50MHz.(covering radius is distance such as base station (the evolved Node Base between the transfer of data two ends to these mobile communication demands at covering radius; ENodeB; Further can be called for short eNB) and subscriber equipment (User Equipment; UE) distance between) be no more than under 5 kilometers the situation and can satisfy fully, be no more than at covering radius under 30 kilometers the situation, performance index descend or obviously descend, and when covering radius is 100 kilometers, under UE can support the situation of its covering, realize.This demand can satisfy the demand of current general land mobile.

In order to realize the LTE transfer of data, mix automatic repeat requests (Hybrid Automatic Repeat Request; HARQ) mechanism is one of its critical function that guarantees the link circuit self-adapting transmission.In the LTE system, because the maximum process number of identical HARQ is adopted in up-downgoing, general, transmission delay depends on the distance between eNB and the UE.In the LTE system usually regulation UE processing delay Trx be that 3ms (comprise the coding of downlink data decoding and upstream data/multiplexing) and eNB processing delay Ttx are 3ms (comprise that upstream data is decoded and the coding of downlink data/multiplexing).For example, for eNB, just from receiving data to confirming (Acknowledge; ACK)/deny (Negative ACKnowledgment; NACK) minimum interval between the feedback and from receiving feedback information the minimum interval the data dispatch all is 3ms to carrying out next time, i.e. 3 sub-frame length.FDD (Frequency Division Duplexing; FDD) in the system, the transmission of any one direction all is continuous, always can in fixing subframe, carry out data re-transmission or the ACK/NACK feedback signaling takes place.In the FDD system, taken all factors into consideration the problem of performance and complexity, comprised demand, eNB processing delay and the UE processing delay etc. of different delay sensitive traffic, the even number process can with discontinuous reception (Discontinuous Reception; DRX) reason of aspect such as pattern alignment confirms that the maximum process number of HARQ is 8 processes, winding time (Round Trip Time; RTT) be 8ms.

Yet; Mobile communication not only has demand in general scene; Also have the demand of application scenarioss such as high-speed transit main line such as marine site at the movable spatial domain of for example civilian aircraft, steamer and drilling platforms, magnetic suspension train, high-speed railway, these demands all are that future network covers indispensable part.And the different demands of these typical application scenes have a common feature; It is exactly the solution that at first need propose reasonably to satisfy big covering radius demand; For example satisfy, even under 200 kilometers situation, need reach the demand of good performance index above 100 kilometers.LTE system at this time belongs to typical covering constrained system.For example can get these 100 kilometers and be the distance threshold of prior art.

Carry out simple computation for big coverage cell propagation delay time situation; For example under radius of society is 200 kilometers situation; Because wireless transmission delay depends on the distance between transfer of data two ends such as eNB and the UE; Calculate with 6.7 μ s/km, 200 kilometers minimal time delay is: 200km multiply by 6.7 μ s/km and equals 1340 μ s, i.e. 1.34ms.When eNB issues Physical Downlink Shared Channel (Physical Downlink Shared Channel; PDSCH) during data, arrive UE through 1.34ms, the UE minimum treat time is 3ms, and UE feeds back when 4.34ms the soonest, arrives the base station through wireless transmission time delay 1.34ms again after the feedback, and the minimum treat time of base station is 3ms.Can find out altogether needs 8.68ms at least according to the time delay budget; And the maximum process number of HARQ is 8 processes under the FDD situation, and the maximum winding time that can support is 8ms, so; Under the conditions of demand of this big covering, total propagation delay time has surpassed the total capacity of system.Therefore; Prior art be that 8 data transmission method can't be applicable to distance between the transfer of data two ends greater than the big coverage condition of the distance threshold of prior art based on the maximum process number of HARQ, needing badly provides a kind of data transmission scheme that is applicable to the distance between the transfer of data two ends greater than the distance threshold of prior art.

Summary of the invention

The embodiment of the invention provides a kind of data transmission method and equipment, to remedy the deficiency of prior art, a kind of data transmission scheme that is applicable to the distance between the transfer of data two ends greater than the distance threshold of prior art is provided.

For achieving the above object, the embodiment of the invention has adopted following technical scheme:

The embodiment of the invention provides a kind of data transmission method, comprising:

When the distance between the opposite end of data transmission set and data transmission set during greater than distance threshold; Said data transmission set obtains the maximum process number of carrying out the automatic repeat requests of mixing that transfer of data adopted, and the maximum process number of the automatic repeat requests of said mixing is to obtain according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of said data transmission set, said data transmission set and said data transmission set and said data transmission set;

Said data transmission set carries out transfer of data according to the maximum process number of the automatic repeat requests of said mixing and the opposite end of said data transmission set.

The embodiment of the invention also provides a kind of data transmission set, and said equipment comprises:

Maximum process is counted acquiring unit; Be used for when the distance between the opposite end of data transmission set and data transmission set during greater than distance threshold; Obtain the maximum process number of carrying out the automatic repeat requests of mixing that transfer of data adopted, the maximum process number of the automatic repeat requests of said mixing is to obtain according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of said data transmission set, said data transmission set and said data transmission set and said data transmission set;

Data transmission unit is used for counting the maximum process number of the automatic repeat requests of mixing that acquiring unit obtains and transfer of data is carried out in the opposite end of said data transmission set according to said maximum process.

The beneficial effect of the embodiment of the invention is:

The embodiment of the invention is through adopting technique scheme; Can be during greater than distance threshold in the distance between the opposite end of data transmission set and data transmission set; Be under the big covering scene; Obtain the maximum process number of the HARQ that is adopted according to the distance between the opposite end of data transmission set and data transmission set, and carry out transfer of data, to realize the transfer of data under a kind of big covering scene according to the maximum process number of the HARQ that obtains.The technical scheme of the embodiment of the invention, but the permissible delay that can solve existing system can not be supported the problem of transfer of data under the big overlay area, is implemented under the big covering scene and realizes transfer of data according to HARO mechanism.

The technical scheme of the embodiment of the invention is applicable to the big covering scene of covering radius greater than 100 kilometers (as 200 kilometers).And the technical scheme of the embodiment of the invention is carried out transfer of data according to the maximum process number of the HARQ that obtains, can guarantee the data transmission efficiency under big coverage condition effectively.

Description of drawings

Fig. 1 is a HARQ transmission time sequence sketch map on the up direction;

Fig. 2 is a HARQ transmission time sequence sketch map on the down direction;

Fig. 3 is a radius of society less than 100 kilometers ascending HARQ process sketch map;

Fig. 4 is a radius of society less than 100 kilometers descending HARQ process flow diagram;

The flow chart of the data transmission method that Fig. 5 provides for the embodiment of the invention one;

Transmitting uplink data signaling process sketch map when the radius of society that Fig. 6 provides for the embodiment of the invention two is big the covering;

Ascending HARQ when the radius of society that Fig. 7 provides for the embodiment of the invention two is big the covering is handled sketch map;

Downlink data transmission signaling process sketch map when the radius of society that Fig. 8 provides for the embodiment of the invention three is big the covering;

Descending HARQ when the radius of society that Fig. 9 provides for the embodiment of the invention three is big the covering handles sketch map;

The data transmission set structural representation that Figure 10 provides for the embodiment of the invention four;

The data transmission set structural representation that Figure 11 provides for the embodiment of the invention five.

Embodiment

For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.

In the LTE system; No matter be that UE carries out service access; Or UE is in the up-downgoing business, because the influence that the time-varying characteristics of wireless channel and multipath fading signal transmission bring, and some uncertain interference; Can cause the signal bust this, current is to guarantee continuity, the correctness that up-downgoing is professional through HARQ mechanism.But the link adaptation mechanism of this error correction is subject to processing time and the wireless signal of processing time, eNB of UE at the time RTT of wireless air environment round-trip transmission.Wherein RTT is subject to the network coverage, just the size of radius of society.

For the technical scheme of various embodiments of the present invention more clearly is described, the transmission time sequence of HARQ is introduced.Referring to Fig. 1, shown the transmission time sequence sketch map of HARQ on the FDD LTE R8/R9 system uplink direction.HARQ comprises 8 maximum process numbers, and the maximum process number of HARQ is determined by RTT, is example with FDD, and the maximum process number of HARQ can be represented as follows:

For descending, wherein, T _DataAnd T _AckFor the time that data are sent and ACK/NACK feeds back, respectively be 1 sub-frame T _SfT _pBe the propagation delay of eNB to UE; T _RXIn processing time for UE, comprise decoding etc.; T _TXProcessing delay for eNB.

Referring to Fig. 2, shown the transmission time sequence sketch map of HARQ on the FDD LTE R8/R9 system descending direction.Identical HARQ process number is adopted in uplink and downlink usually.

Concrete data transmission procedure introduction to up direction and down direction is following:

Up direction

On the up direction, data transmission set is UE, and the opposite end of data transmission set is eNB.Referring to Fig. 3, shown that radius of society (being covering radius) is less than 100 kilometers up (UpLink; UL) HARQ process sketch map.UL HARQ adopts the HARQ mode of synchronous non-self-adapting among the LTE.

1:eNB sends (Physical Downlink Control CHannel at subframe n1; PDCCH) control information of transfer of data, this control information is including, but not limited to Downlink Control Information (Downlink Control Information; DCI) 0;

2: above-mentioned control information arrives UE through certain downstream propagation delay; UE receives in official hour and handles DCI0; And according to the schedule information of DCI0; Carry out the group bag of upstream data, send new Physical Uplink Shared Channel (the Physical Uplink Shared Channe of redundancy versions 0 (RV0) at the moment subframe n1+k of regulation; PUSCH) data.The k value is 4 in the scene shown in Figure 3, and promptly the subframe of predetermined delivery time is for sending the 4th sub-frame of DCI0 from eNB.

3: above-mentioned PUSCH data postpone to arrive eNB through certain uplink, and eNB receives the upstream data PUSCH that handles UE in official hour, pass through Physical HARQ Indicator Channel (Physical HARQ Indicator CHannel at the moment n2 of regulation; PHICH) feed back the ACK/NACK information of transmitting last time to UE.

4:PHICH information arrives UE through certain downstream propagation delay; UE separates mediation to the ACK/NACK information among the PHICH and handles in official hour; And according to ACK/NACK information; Accomplish the preparation of data retransmission, send data retransmission (PUSCH data) at the up delivery time n2+4 of regulation;

5:eNB receives the upstream data PUSCH that handles UE in official hour, feed back the ACK/NACK information of transmission last time to UE through PHICH at the moment n3+k of regulation.And the like when base station feedback be ACK the time, shown in dotted line right side among Fig. 4, HARQ process finishes.

Down direction

On the down direction, data transmission set is eNB, and the opposite end of data transmission set is UE.Descending (DownLink among the LTE; DL) HARQ adopts asynchronous adaptive HARQ mode, and referring to Fig. 4, the processing of covering radius during less than 100 kilometers comprises:

1:eNB sends Physical Downlink Shared Channel (Physical Downlink Shared CHannel at subframe n1; PDSCH) data;

The 2:PDSCH data arrive UE through certain downstream propagation delay, and UE receives in official hour and handles the PDSCH data, send the ACK/NACK information (among Fig. 4 be example explain with the feedback nack message) of feedback at the moment subframe n1+k (k=4) of regulation.

3: above-mentioned ACK/NACK information postpones to arrive eNB through certain uplink, and eNB receives the up ACK/NACK information of handling UE in official hour, and when being nack message, eNB sends at the moment subframe n2 of regulation and retransmits the PDSCH data.

4:UE receives in official hour and handles PDSCH, sends the ACK/NACK information of feedback at subframe n2+4.And the like, when UE feedback be ACK the time, a HARQ process finishes.

Therefore, big coverage condition mobile communication design demand down satisfies and is guaranteeing that link is in long distance is big when covering transmission required perfect HARQ flow process, to guarantee the technological correct realization of LTE under the big coverage condition.This is one of the technical scheme of embodiment of the invention main purpose of being devoted to realize just.

Referring to Fig. 5, the data transmission method for the embodiment of the invention one provides specifically can comprise the steps:

51: when the distance between the opposite end of data transmission set and data transmission set during greater than distance threshold, data transmission set obtains the maximum process number of carrying out the HARQ that transfer of data adopted.

The maximum process number of HARQ in the present embodiment is that the distance between the opposite end of data processing time delay and data transmission set and data transmission set of opposite end of data processing time delay, data transmission set according to data transmission set obtains.

For example the above-mentioned distance threshold in the present embodiment has the UE of 8 process HARQ and the ultimate range between the eNB now for supporting, like 100km.When the distance between UE and the eNB does not exceed this distance threshold, can handle according to existing HARQ mechanism; When the distance between UE and the eNB exceeds this distance threshold; The time maximum delay of postponing a meeting or conference and supporting of total transmission data above system; At this moment, utilize the technical scheme data transmission set of present embodiment to obtain the maximum process number of carrying out the HARQ that transfer of data adopted.Wherein the maximum process number of HARQ is that distance between the opposite end of data processing time delay and data transmission set and data transmission set of opposite end of data processing time delay, data transmission set according to data transmission set obtains; And the data processing time delay of the opposite end of the data processing time delay of data transmission set, data transmission set can be preset.Distance between the opposite end of data transmission set and data transmission set can be got access to by data transmission set, and the technical scheme of present embodiment limits in this does not obtain distance between the opposite end of data transmission set and data transmission set to data transmission set concrete mode.

52: data transmission set carries out transfer of data according to the maximum process number of HARQ and the opposite end of data transmission set.

The data transmission method of present embodiment is applicable to distance between the opposite end of data transmission set and data transmission set greater than the scene of distance threshold, and this scene also can be referred to as big covering scene.And the data transmission scheme of the HARQ mechanism that comprises 8 processes of the prior art transfer of data under the covering scene greatly; Therefore the maximum process number of the HARQ that data transmission set is adopted through the execution transfer of data of obtaining under this big covering scene in the present embodiment, and carry out transfer of data based on the maximum process number of this HARQ and the opposite end of data transmission set.

Therefore; Present embodiment is through adopting technique scheme; Can during greater than distance threshold, under the promptly big covering scene, obtain the maximum process number of the HARQ that is adopted according to the distance between the opposite end of data transmission set and data transmission set in the distance between the opposite end of data transmission set and data transmission set; And carry out transfer of data according to the maximum process number of the HARQ that obtains, to realize the transfer of data under a kind of big covering scene.The technical scheme of present embodiment, but the permissible delay that can solve existing system can not be supported the problem of transfer of data under the big overlay area, is implemented under the big covering scene and realizes transfer of data according to HARO mechanism.

The technical scheme of present embodiment is applicable to the big covering scene of covering radius greater than 100 kilometers (as 200 kilometers).And the technical scheme of present embodiment is carried out transfer of data according to the maximum process number of the HARQ that obtains, can guarantee the data transmission efficiency under big coverage condition effectively, but also can be good at compatible existing wireless system.

Alternatively; On above-mentioned basis embodiment illustrated in fig. 5, " data transmission set obtains the maximum process number of carrying out the HARQ that transfer of data adopted " in the step 51 wherein specifically can adopt following mode to realize: data transmission set obtains the maximum process number of HARQ according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of data transmission set, data transmission set and data transmission set and data transmission set.The promptly corresponding maximum process number that comes computed HARQ by data transmission set of this mode; Wherein the data processing time delay of the opposite end of the data processing time delay of data transmission set, data transmission set can be for being provided with in advance.

Further, above-mentioned " data transmission set obtains the maximum process number of HARQ according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of data transmission set, data transmission set and data transmission set and data transmission set " specifically can comprise the steps:

(1) data transmission set obtains propagation delay time according to the distance between the opposite end of data transmission set and data transmission set;

Propagation delay time in the present embodiment can be thought the general designation of propagation delay time 1 and propagation delay time 2.Propagation delay time 1 is the data transmission set time that the opposite end of transfer of data to data transmission set is required, and propagation delay time 2 is the opposite end of the data transmission set time that transfer of data to data transmission set is required.In the practical application; Can think that the numerical value of propagation delay time 1 and propagation delay time 2 is identical; Promptly all be the transmission time of data between the opposite end of data transmission set and data transmission set, therefore can be with above-mentioned propagation delay time 1 and the propagation delay time 2 unified propagation delay times that are referred to as.

(2) data transmission set obtains the first corresponding time-delay estimator of data transmission set according to the data processing time delay of propagation delay time and data transmission set;

For example data transmission set can be got smallest positive integral greater than the data processing time delay sum of propagation delay time and data transmission set as the first time-delay estimator; That is the first time-delay estimator is rounded up by the data processing time delay of propagation delay time and data transmission set and obtains.

(3) data transmission set obtains the second corresponding time-delay estimator of opposite end of data transmission set according to the data processing time delay of the opposite end of propagation delay time and data transmission set;

For example data transmission set is got smallest positive integral greater than the data processing time delay sum of the opposite end of propagation delay time and data transmission set as the second time-delay estimator.That is the second time-delay estimator is rounded up by the data processing time delay of the opposite end of propagation delay time and data transmission set and obtains.

(4) data transmission set obtains the maximum process number of HARQ according to the first time-delay estimator and the second time-delay estimator.

For example this step (4) specifically can adopt following mode to realize: data transmission set is got greater than the even number of the first time-delay estimator and the second time-delay estimator sum maximum process number as HARQ.Because the maximum process number of HARQ is excessive, can influence the professional application of delay sensitive, cause a lot of real-time service flows and quality seriously to descend.And, being chosen under the situation of odd number at the maximum process number of HARQ, business can't be mated under discontinuous reception scene; Under the half-duplex scene, owing to exist a sub-frame to send out, the situation that another subframe is received also causes business to mate; Under the FDD scene, also require up-downgoing process number to equate, adopt the process number of odd number then can't satisfy this requirement.Therefore in the embodiment of the invention, preferably get greater than the minimum even number of the first time-delay estimator and the second time-delay estimator sum maximum process number as HARQ.

Need to prove that in the LTE system, the data transmission set in the foregoing description can be UE, the opposite end of corresponding data transmission set can be eNB.Otherwise the data transmission set in the foregoing description can also be eNB, and the opposite end of corresponding data transmission set can also be UE.

The data processing time delay of the data processing time delay of above-mentioned data transmission set or the opposite end of data transmission set is corresponding to UE processing delay Trx in the LTE system (comprise the coding of downlink data decoding and upstream data/multiplexing) or eNB processing delay Ttx (comprise that upstream data is decoded and the coding of downlink data/multiplexing).For example; For eNB; When eNB is the opposite end of data transmission set; Just eNB is from receiving data to the minimum interval that carries out the ACK/NACK feedback for the data processing time delay of the opposite end of data transmission set, and when eNB was data transmission set, the data processing time delay of data transmission set was that eNB is from receiving feedback information to carrying out the minimum interval the data dispatch next time.For UE; When UE is data transmission set; The data processing time delay of data transmission set just UE finishes and sends the minimum interval of data from the scheduling controlling order that the receives eNB group bag that packages; Perhaps, when UE was the opposite end of data transmission set, the data processing time delay of the opposite end of data transmission set was UE from receiving data that eNB sends to the minimum interval that carries out the ACK/NACK feedback.

The technical scheme that is appreciated that present embodiment can be applicable to the numerical value scene inequality of propagation delay time 1 and propagation delay time 2 equally.

Alternatively; When data transmission set is UE; The opposite end of data transmission set is eNB; " data transmission set obtains the maximum process number of carrying out the HARQ that transfer of data adopted " in the above-mentioned step 51 in embodiment illustrated in fig. 5 specifically can also adopt following mode to realize: UE receives the maximum process number of the HARQ that eNB sends, and the maximum process number of the HARQ that this moment is corresponding is obtained according to the data processing time delay of the data processing time delay of eNB, UE and the distance between eNB and the UE by eNB.Particularly, UE can receive eNB at Physical Downlink Control Channel (Physical Downlink Control Channel; PDCCH) go up Downlink Control Information (the Downlink Control Information that sends; DCI), carry the maximum process number of HARQ among the DCI.Need to prove, be 8 to compare with the maximum process number of HARQ of the prior art here, needs to revise the figure place of the maximum process number of the HARQ that carries among the DCI in the technical scheme of present embodiment.It is several 8 the time for example to carry the maximum process of HARQ of prior art in the DCI; Need 3bit just can realize at most; And when the maximum process number of HARQ that adopts this DCI to carry present embodiment as 10 or during greater than 10 even number, need this moment 4bit could realize the modification of the HARQ maximum process number in the embodiment of the invention at least.

Further need to prove; On the basis of the technical scheme of the foregoing description; The data transmission method of the embodiment of the invention; Also comprise following technical scheme: when needs carried out semi-persistent scheduling, data transmission set was revised Radio Resource control (the Radio Resource Control of data transmission set side according to the maximum process number of HARQ; RRC) the semi-persistent scheduling number of processes parameter in the layer.In like manner; In the opposite end of data transmission set also need according to the maximum process number of HARQ revise data transmission set to the semi-persistent scheduling number of processes parameter in the distolateral rrc layer; The semi-persistent scheduling number of processes parameter to distolateral to guarantee data transmission set and data transmission set is consistent, to guarantee the successful transmission of data.This scheme both had been applicable to that data transmission set was UE, and the opposite end of data transmission set is eNodeB, was applicable to that equally also data transmission set is eNodeUE, and the opposite end of data transmission set is UE.

Further need to prove; On the basis of the technical scheme of the foregoing description; The data transmission method of the embodiment of the invention also comprises following technical scheme: data transmission set is revised medium access control (the Media Access Control of data transmission set side according to the maximum process number of HARQ; MAC) HARQ winding time timer parameter in the layer.In like manner; The opposite end of data transmission set also need revise according to the maximum process number of HARQ data transmission set to distolateral MAC layer in HARQ winding time timer parameter; The semi-persistent scheduling number of processes parameter to distolateral to guarantee data transmission set and data transmission set is consistent, to guarantee the successful transmission of data.In like manner, this scheme both had been applicable to also that data transmission set was UE, and the opposite end of data transmission set is eNB, was applicable to that equally also data transmission set is eNodeUE, and the opposite end of data transmission set is UE.

Further alternatively; On the basis of the technical scheme of the foregoing description; Above-mentioned step 51 in embodiment illustrated in fig. 5: " data transmission set carries out transfer of data according to the maximum process number of HARQ and the opposite end of data transmission set "; Specifically can comprise: UE sends upstream data according to the maximum process number of HARQ to eNB, and for example UE sends upstream data through PUSCH to eNB on (the maximum process number of subframe n1+/2) corresponding subframe, and n1 is that eNB passes through PDCCH sends subframe from DCI0 to UE.Perhaps can also comprise: to eNB feeding back ACK/NACK, wherein make by the reception result of this ACK/NACK downlink data that to be UE send eNB according to the maximum process number of HARQ for UE.For example to eNB feeding back ACK/NACK, the n1 of this moment is that eNB passes through PDSCH sends subframe from downlink data to UE to UE on (the maximum process number of subframe n1+/2) corresponding subframe.In detail can be with reference to the record of following embodiment.

By last; Present embodiment is through adopting technique scheme; Can during greater than distance threshold, under the promptly big covering scene, obtain the maximum process number of the HARQ that is adopted according to the distance between the opposite end of data transmission set and data transmission set in the distance between the opposite end of data transmission set and data transmission set; And carry out transfer of data according to the maximum process number of the HARQ that obtains, to realize the transfer of data under a kind of big covering scene.The technical scheme of present embodiment, but the permissible delay that can solve existing system can not be supported the problem of transfer of data under the big overlay area, is implemented under the big covering scene and realizes transfer of data according to HARO mechanism.

The technical scheme of present embodiment is applicable to the big covering scene of covering radius greater than 100 kilometers (as 200 kilometers).And the technical scheme of present embodiment is carried out transfer of data according to the maximum process number of the HARQ that obtains, can guarantee the data transmission efficiency under big coverage condition effectively.

Be that example specifies technical scheme of the present invention with the distance between terminal (like UE) and the eNB greater than 100km, less than the scene of 200km below; Propagation delay time between eNB and the UE is calculated with 6.7 μ s/km; The UE minimum treat time is 3ms; The eNB minimum treat time is 3ms, and promptly the data processing time delay at terminal is 3ms, and the data processing time delay of base station is 3ms.

The method of the embodiment of the invention is in ascending HARQ and descending HARQ, and the HARQ that stipulates because of UE has little time to handle the information that eNB issues in the processing time, needs to consider to revise the maximum number of processes of HARQ, to adapt to the situation of big covering.According to the calculating in the background technology part, cover in order to satisfy greatly, under the situation of 200 kilometers radius of societies; Needing altogether, time delay is 8.68ms; If adopting the maximum process number of the HARQ of prior art is 8, possibly all when sending data, can't guarantee that the data set bag finishes.Therefore just can satisfy big 200 kilometers radius of societies greater than the 8.68ms situation, when just adopting 8 processes above, just can adapt to 200 kilometers radius of societies.For example adopt the technique scheme of the embodiment of the invention, adopting the minimum even number greater than 8 is 10, promptly can guarantee when sending data, and data can both be organized bag and finish, and have guaranteed data transmission efficiency effectively.

The maximum process number of the HARQ that present embodiment adopts following mode to calculate to be adopted:

Data transmission set obtains propagation delay time according to the distance between the opposite end of data transmission set and data transmission set; Data transmission set obtains the first corresponding time-delay estimator of data transmission set according to the data processing time delay of propagation delay time and data transmission set; Data transmission set obtains the second corresponding time-delay estimator of opposite end of data transmission set according to the data processing time delay of the opposite end of propagation delay time and data transmission set; Data transmission set obtains the maximum process number of HARQ according to the first time-delay estimator and the second time-delay estimator.

Wherein, Data transmission set adopts the mode that rounds up to obtain the above-mentioned first time-delay estimator and the second time-delay estimator; Be that data transmission set is got smallest positive integral greater than the data processing time delay sum of propagation delay time and data transmission set as the first time-delay estimator; And, get greater than according to the smallest positive integral of the data processing time delay sum of the opposite end of propagation delay time and data transmission set as the second time-delay estimator.

As preferred mode; Scene for 200km; This programme according to the maximum process number of the first time-delay estimator and the definite HARQ that is adopted of the second time-delay estimator is:

expression rounds up; Wherein, each subframe in the HARQ process is 1ms.At this, adopt the mode that rounds up to remove the fractional part that calculates and consider that mainly the transmitting-receiving of present data is unit with the subframe.

This moment, system can tolerate that time delay is 10ms.That is: the maximum process number of HARQ can be revised as L=1, and 2,3 ... 9,10.So analogize,, also can increase the adaptability of big coverage cell radius if adopt more process.

Yet the maximum process number of HARQ is excessive, can influence the professional application of delay sensitive, causes a lot of real-time service flows and quality seriously to descend.And, be chosen under the situation of odd number at the maximum process number of HARQ, as 11, situation such as 13 professionally can't be mated under discontinuous reception (DRX) scene; Under the half-duplex scene, owing to exist a sub-frame to send out, the situation that another subframe is received also causes business to mate; Under the FDD scene, also require up-downgoing process number to equate, adopt the maximum process number of the HARQ of odd number then can't satisfy this requirement.For addressing these problems; The technical scheme of the embodiment of the invention adopts gets greater than the even number process number of the first time-delay estimator and the second time-delay estimator sum maximum process number as HARQ; Preferably, the embodiment of the invention can be chosen greater than the minimum even number of the first time-delay estimator and the second time-delay estimator sum maximum process number as HARQ.

Therefore, for the scene on a large scale of 200km, the maximum process number of setting HARQ in the present embodiment is L=10.In protocol stack, there is a HARQ entity in each UE side, the maximum process number of the HARQ that each entity maintaining some is parallel.

The technical scheme of present embodiment; Employing greater than the minimum even number of the first time-delay estimator and the second time-delay estimator sum as the maximum process number of HARQ; On the one hand; Under big covering scene; Can guarantee that UE on the up direction handled control information and the group bag that eNB issues and finishes before being used to send the subframe of data, and UE can receive before being used to send the ACK/NACK feedback information and finishes on the down direction to the downlink data that eNB sends, thereby guarantee the successful transmission of data under the big covering scene effectively; On the other hand, farthest reduced under the HARQ mechanism and carried out the required time of transfer of data, guaranteed data transmission efficiency.

The signaling diagram of the data transmission method that Fig. 6 provides for the embodiment of the invention two.The data transmission method of present embodiment is UE with the data transmission set; The opposite end of data transmission set is eNB (can be abbreviated as eNB); Transmission of uplink data is that example is introduced technical scheme of the present invention in detail; As shown in Figure 6, the data transmission method of present embodiment specifically can comprise the steps:

600, UE and eNB obtain the distance between UE and the eNB respectively, and confirm that this distance is greater than the distance threshold between UE and the eNB;

Be 200km with the distance between UE and the eNB in the present embodiment, distance threshold is 100km.

When distance is smaller or equal to the distance threshold between UE and the eNB between UE and the eNodB, can carry out transfer of data according to prior art, present embodiment repeats no more.The mode of UE and eNB not being obtained the distance between UE and the eNB respectively in the present embodiment limits, in detail can be with reference to related art.

601, UE and eNB are respectively according to the data processing time delay of UE, the data processing time delay of eNB and the maximum process number of the distance calculation HARQ between UE that obtains and the eNB;

Wherein the data processing time delay of the data processing time delay of UE and eNB can be arranged among UE and the eNB in advance, for example can all be set to 3ms.Wherein the mode of the maximum process number of UE and eNB difference computed HARQ can repeat no more at this with reference to the record of above-mentioned related embodiment.For example with reference to the record of the foregoing description, the distance between UE and eNB is 200km, and when distance threshold was 100km, the maximum process number that can calculate HARQ was 10.

602, UE and eNB revise the HRAQ RTTTimer parameter of each the HARQ process in the MAC layer respectively, and the semi-persistent scheduling configuration parameter in the rrc layer;

For example the HRAQ RTT Timer parameter with each the HARQ process in the MAC layer is revised as 10 sub-frame by 8 original sub-frame; The semi-persistent scheduling configuration parameter of rrc layer is revised as numberofconfsps-processesINTEGER (1..10) by numberofconfsps-processes INTEGER (1..8), can guarantee the successful transmission of data between UE and the eNB through the modification of above-mentioned parameter.

603, eNB sends DCI0 through PDCCH to UE on subframe n1;

604, through certain propagation delay time, UE receives the DCI0 that eNB sends on subframe n1, and in the data processing time delay of UE, DCI0 is carried out demodulation, therefrom obtains schedule information, and according to schedule information upstream data is packaged;

605, UE goes up in subframe (maximum process number/2 of n1+HARQ) according to the schedule information among the DCI0 and sends upstream data through PUSCH to eNB;

For example the maximum process number as above-mentioned HARQ is 10, and UE goes up in subframe (n1+5) according to the schedule information among the DCI0 and sends upstream data through PUSCH to eNB.

606, pass through certain propagation delay time again, eNB receives the upstream data that UE sends, and the processing after in the data processing time delay of eNB, upstream data being received;

607, eNB passes through PHICH to UE feeding back ACK/nack message according to result on subframe n2;

Wherein subframe n2 equals the maximum process number of n1+HARQ, and in above-mentioned scheme, n2 equals n1+10.

608, pass through certain propagation delay time again, UE receives the ACK/NACK information that eNB feeds back on subframe n2, and in the data processing time delay of UE, ACK/NACK information is carried out demodulation;

609, UE goes up in subframe (maximum process number/2 of n2+HARQ) according to ACK/NACK information and sends upstream data through PUSCH to eNB.

Wherein when eNB feedback be ACK information the time, this moment, a HARQ process finished, UE goes up through PUSCH in subframe (n2+5) according to ACK information and sends new upstream data to eNB.Otherwise when eNB feedback be nack message the time, UE goes up the upstream data to transmission last time of eNB delivery through PUSCH according to nack message in subframe (n2+5).Then with reference to above-mentioned steps 606-609, up to the eNB feedback be ACK information, this moment, a HARQ process finished.

Further, for the scheme that makes present embodiment is clearer, further the Signalling exchange scene among Fig. 6 is described in conjunction with Fig. 7, the UL HARQ when radius of society is big the covering is described below main interaction flow:

1: under the ascending HARQ situation, when radius of society is big the covering, send the control signaling DCI0 of new data transmission at subframe n1 to UE for all new PDCCH transmission (once new transfer of data) eNB, this step is corresponding to the step 603 among Fig. 6.

2:UE receives above-mentioned control signaling DCI0, sends upstream data according to the obtain maximum process number of carrying out the HARQ that transfer of data adopted to eNB, and this step is corresponding to the step 605 among Fig. 6.

UE can adopt following dual mode to obtain the maximum process number of HARQ:

Mode one, UE calculate the maximum process number of the HARQ that is adopted according to the first time-delay estimator and the second time-delay estimator oneself.Being UE goes out the maximum process number of HARQ according to the distance calculation between the opposite end of the data processing time delay of the opposite end of the data processing time delay of data transmission set, data transmission set and data transmission set and data transmission set.Obtaining the operation of the maximum process number of HARQ under this mode can carry out in the step 601 among Fig. 6.

Mode two, UE receive the maximum process number of the HARQ that eNB sends, and to be eNB obtain according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of data transmission set, data transmission set and data transmission set and data transmission set the maximum process number of HARQ.

Concrete, UE receives the DCI that send the base station on Physical Downlink Control Channel, carry the maximum process number of HARQ among the DCI.Be after eNB calculates the maximum process number of HARQ, to inform UE through DCI.

The maximum process number of the HARQ that data transmission set obtained in the present embodiment is 10; Then UE promptly will send to eNB according to the PUSCH data that control signaling group bag finishes on the subframe n1+5 of the first time-delay estimator (numerical value of the first time-delay estimator is 5) correspondence at the subframe n1+k (k=5) of regulation x time.

The reason that adopts this processing mode is when UE is far apart from eNB, and when promptly surpassing 100 kilometers, UE does not have time enough that new transmission data are packaged, and therefore, will cause loss of data like this.Present embodiment is through modification process number, guaranteed that the group bag finishes before UE need send the subframe of PUSCH data.

The technical scheme of present embodiment does not judge whether to organize the concrete mode that bag finishes to UE and limits, and for example, UE can be known whether the PUSCH data are organized to wrap and finishes through the data in the buffer memory (buffr) are detected.

3:eNB sends ACK/NACK message at subframe n2, and this step is corresponding to above-mentioned steps 607;

ENB is at subframe n2 (n1+10), promptly receives/send out transmission HARQ feedback information on the corresponding subframe of the second time-delay estimator (this numerical value is 5) after the subframe n1+5 of data in last time.Annotate: corresponding subframe of the first time-delay estimator or the corresponding subframe of the second time-delay estimator mainly refer to receive/send out after the subframe of data through the delay time subframe of estimator of the first time-delay estimator or second from last one among each embodiment; If during with the subframe serial number among the HARQ, the numbering of the subframe that is numbered a receipts/data of this subframe adds the first time-delay estimator or the second time-delay estimator.

After eNB received the PUSCH data, decoding judged whether correct, if correct, sent the ACK feedback to UE, finished this data transfer.

If mistake is sent out NACK feedback to UE, UE receives feedback, sends data at x time n2+k (k=5), if later process remain NACK will be similar with this method.If the decoding correct judgment is sent out ACK to UE.The HARQ process finishes.

Should be noted that: in step 605, send upstream data to eNB on the subframe of the maximum process number of UE HARQ after the first subframe n1/2 correspondences in the embodiment shown in fig. 6; And eNB passes through PHICH to UE feeding back ACK/nack message according to result on the maximum process number of subframe n1+HARQ in step 607;

This data processing time delay of opposite end of data processing time delay and data transmission set of mainly considering present data transmission set is identical; The first time-delay estimator that then calculates is also identical with the numerical value of the second time-delay estimator; Thereby the corresponding subframe of the first time-delay estimator is consistent behind the corresponding subframe in the maximum process number of HARQ behind the first subframe n1/2 and the subframe n1 that receives/send out data in last time, and the second corresponding subframe of estimator of delaying time is consistent after the subframe n1+5 of the subframe that the maximum process number of HARQ is corresponding behind the first subframe n1 and receipts/data last time.

Further, present embodiment eNB revises the number of bits of indication HARQ process number among the DCI that issues through PDCCH according to the maximum process number of determined HARQ.For example, in above HARQ process,, after HARQ process number is increased to 10, need the bit number of the indication HARQ of PDCCHDCI form be become 4 bits by 3 original bits, could guarantee the realization that HARQ process number is revised according to the requirement of big covering.The DCI that wherein need revise comprises DCI1, DCI1A, DCI1B, DCI1D, DCI2, DCI2A, DCI2B and DCI2C.

The technical scheme of present embodiment can be applied to wait stops formula (Stop-and-wait; SAW) HARQ, N passage etc. stop formula HARQ, select repeating transmission formula (Selective-Repeat; SR) HARQ agreement.Dotted arrow has shown that N passage etc. stops the data transfer mode of formula HARQ among Fig. 5, and solid arrow has shown the data transfer mode of above-mentioned steps 1-3.

From the above mentioned; Present embodiment is through adopting technique scheme; Can during greater than distance threshold, under the promptly big covering scene, obtain the maximum process number of the HARQ that is adopted according to the distance between the opposite end of data transmission set and data transmission set in the distance between the opposite end of data transmission set and data transmission set; And carry out transfer of data according to the maximum process number of the HARQ that obtains, to realize the transfer of data under a kind of big covering scene.The technical scheme of present embodiment, but the permissible delay that can solve existing system can not be supported the problem of transfer of data under the big overlay area, is implemented under the big covering scene and realizes transfer of data according to HARO mechanism.

The signaling diagram of the data transmission method that Fig. 8 provides for the embodiment of the invention three.The data transmission method of present embodiment is UE with the data transmission set; The opposite end of data transmission set is eNB, and the example that is transmitted as of downlink data is introduced technical scheme of the present invention in detail, and is as shown in Figure 8; The data transmission method of present embodiment specifically can comprise the steps:

800, eNB obtains the distance between UE and the eNB, and confirms that this distance is greater than the distance threshold between UE and the eNB;

Be 200km with the distance between UE and the eNB still in the present embodiment, distance threshold is 100km.This step can repeat no more at this with reference to above-mentioned step 600 in embodiment illustrated in fig. 6.

801, eNB is according to the data processing time delay of UE, the data processing time delay of eNB and the maximum process number of the distance calculation HARQ between UE that obtains and the eNB;

Wherein the data processing time delay of the data processing time delay of UE and eNB can be arranged among the eNB in advance, for example can all be set to 3ms.Wherein the mode of the maximum process number of eNB computed HARQ can repeat no more at this with reference to the record of above-mentioned related embodiment.For example with reference to the record of the foregoing description, the distance between UE and eNB is 200km, and when distance threshold was 100km, the maximum process number that can calculate HARQ was 10.

802, eNB sends DCI through PDCCH to UE, carries the maximum process number of the HARQ of eNB calculating among this DCI; ENB is through issuing the maximum process number that above-mentioned DCI informs the HARQ of the current required employing of UE.

Wherein can learn that by step 801 the maximum process number of the HARQ that eNB calculates in the present embodiment is 10; With the maximum process number of HARQ in the prior art is 8 to compare, in the present embodiment among the DCI bit of the maximum process number of indication HARQ need be revised as 4bit by 3bit.

803, UE receives the DCI that eNB sends, and therefrom obtains the maximum process number of HARQ;

804, identical with above-mentioned step 602 in embodiment illustrated in fig. 6, with reference to the record of the foregoing description, give unnecessary details again in detail at this.

805, eNB sends downlink data through PDSCH to UE on subframe n1;

806, through certain propagation delay time, UE receives the downlink data that eNB sends on subframe n1, and the processing after in the data processing time delay of UE, downlink data being received;

807, UE goes up to eNB feeding back ACK/nack message in subframe (maximum process number/2 of n1+HARQ) according to result.

Need to prove that the data processing time delay of the data processing time delay of consideration UE and eNB is identical in the present embodiment.

For example the maximum process number as above-mentioned HARQ is 10, and UE goes up to eNB feeding back ACK/nack message in subframe (n1+5) according to result.

808, pass through certain propagation delay time again, eNB receives the ACK/NACK information of UE feedback, and in the data processing time delay of eNB, ACK/NACK information is carried out demodulation process;

809, eNB sends downlink data through PUSCH to UE according to ACK/NACK information on subframe n2;

Wherein when UE feedback be ACK information the time, this moment, a HARQ process finished, eNB sends new downlink data to UE according to ACK information on subframe n2.Otherwise when UE feedback be nack message the time, eNB is according to nack message downlink data to transmission last time of UE delivery on subframe n2.Then with reference to above-mentioned steps 806 and 807, up to the UE feedback be ACK information, this moment, a HARQ process finished.

Further, for the scheme that makes present embodiment is clearer, further the Signalling exchange scene among Fig. 8 is described in conjunction with Fig. 9, the DL HARQ when radius of society is big the covering is described below main interaction flow:

1: for descending HARQ, when radius of society was big the covering, eNB sent downlink data at subframe n1 through PDSCH.ENB is 10 according to the maximum process number of the first time-delay estimator and the definite HARQ that is adopted of the second time-delay estimator, and this step is corresponding to the step 805 among Fig. 8.

2: these PDSCH data arrive UE through certain downstream propagation delay; UE also communicates with eNB according to the maximum process number of determined HARQ (as 10), and then UE goes up in the corresponding subframe (n1+5) of the second time-delay estimator (numerical value is

for this) the Physical Downlink Shared Channel PDSCH data that receive are sent the HARQ feedback information to eNB.This step is corresponding to the step 806 among Fig. 8 and 807.

UE and eNB calculate the maximum process number of knowing the HARQ that is adopted respectively in the scene shown in Figure 9, and do not adopt the mode of through DCI the maximum process number of HARQ being informed UE by eNB among Fig. 8.

This programme passes through the modification to the process number of HARQ, UE can be received at the appointed time handle PDSCH, in feedback subframe n1+5 transmission constantly ACK/NACK information.This change is very little to the system configuration influence, to the almost not influence of buffer buffer memory.

3:eNB carries out follow-up HARQ operation according to the ACK/NACK information of UE feedback, and this step is corresponding to the step 808 among Fig. 8 and 809.

Being provided with of HARQ process number needs to guarantee that eNB disposes to the HARQ feedback information in the corresponding subframe (n2) of the first time-delay estimator (is 5 like numerical value) before; Thereby at subframe n2; When eNB according to result judge UE feedback be ACK the time; HARQ process finishes, when eNB according to result judge the UE feedback be NACK the time, send retransmission version PDSCH.

Further, present embodiment also comprises maximum process number modification medium access control (the Media Access Control of data transmission set according to determined HARQ; MAC) HARQ winding time timer parameter in the layer.Accordingly, for guaranteeing the proper communication of communicating pair, HARQ winding time timer parameter in the MAC layer also need be revised according to the maximum process number of determined HARQ in the opposite end of data transmission set.For example, in the above HARQ process, present embodiment is set at 10 sub-frame with HARQ winding time timer (RTT Timer) parameter of each the HARQ process in the MAC layer by original 8 sub-frame change.

Further, present embodiment comprises also that when needs carry out semi-persistent scheduling data transmission set need be revised Radio Resource control (Radio Resource Control according to the process number of determined HARQ; RRC) semi-persistent scheduling number of processes (numberofconfsps-processes) parameter in the layer.Accordingly; For guaranteeing the proper communication of communicating pair; The opposite end of data transmission set also need be according to the numberofconfsps-processe parameter in the process number modification rrc layer of determined HARQ for example; In the above HARQ process; When needs carried out semi-persistent scheduling, the configuration of semi-persistent scheduling among the RRC: IE SPS-Config parameter: numberofconfsps-processes INTEGER (1..8) need change to numberofconfsps-processes INTEGER (1..10).

The up-downgoing HARQ of the method for present embodiment can expanded application in the process of the synchronous HARQ of non-3GPP standard code, asynchronous HARQ, adaptive HARQ and non-self-adapting HARQ.And, can adopt the ascending HARQ mechanism and descending HARQ mechanism under the big covering that is applicable to that this programme provides according to actual needs simultaneously, a kind of in the machine-processed and descending HARQ mechanism of the ascending HARQ that perhaps also can only adopt this programme to provide.

The method of present embodiment is used in LTE R8/R9 technology, also can expand in the system of the LTE-Advanced R10/R11 with carrier aggregation to use.

The method of present embodiment can be applied to the scene that stop-and-wait HARQ, N passage etc. stop formula HARQ, select repeating transmission formula HARQ.This method can expand in the system of LTE-AdvancedR10/R11 of carrier aggregation and use.

Figure 10 is the structural representation of the data transmission set of the embodiment of the invention, and is shown in figure 10, and the data transmission set of present embodiment specifically can comprise: maximum process is counted acquiring unit 101 and data transmission unit 102.

Wherein maximum process is counted acquiring unit 101 and is used for when the distance between the opposite end of data transmission set and data transmission set during greater than distance threshold; Obtain the maximum process number of carrying out the HARQ that transfer of data adopted, the maximum process number of HARQ is that the distance between the opposite end of data processing time delay and data transmission set and data transmission set of opposite end of data processing time delay, data transmission set according to data transmission set obtains; Data transmission unit 102 is counted acquiring unit 101 with maximum process and is connected, and data transmission unit 102 is used for counting the maximum process number of the HARQ that acquiring unit 101 obtains and transfer of data is carried out in the opposite end of data transmission set according to maximum process.

The data transmission set of present embodiment realizes that through adopting said units transfer of data is identical with the realization mechanism of above-mentioned correlation technique embodiment, can repeat no more at this with reference to the content of above-mentioned correlation technique embodiment record in detail.

Present embodiment is through adopting technique scheme; Can be during greater than distance threshold in the distance between the opposite end of data transmission set and data transmission set; Be under the big covering scene; Obtain the maximum process number of the HARQ that is adopted according to the distance between the opposite end of data transmission set and data transmission set, and carry out transfer of data, to realize the transfer of data under a kind of big covering scene according to the maximum process number of the HARQ that obtains.The technical scheme of present embodiment, but the permissible delay that can solve existing system can not be supported the problem of transfer of data under the big overlay area, is implemented under the big covering scene and realizes transfer of data according to HARO mechanism.

The structural representation of the data transmission set that Figure 11 provides for the embodiment of the invention five, shown in figure 11, the data transmission set of present embodiment can also comprise following technical scheme on above-mentioned basis embodiment illustrated in fig. 10:

Shown in figure 11; Maximum process in the data transmission set of present embodiment is counted acquiring unit 101; Specifically be used for when the distance between the opposite end of data transmission set and data transmission set during, obtain the maximum process number of HARQ according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of data transmission set, data transmission set and data transmission set and data transmission set greater than distance threshold.

Alternatively, the maximum process in the data transmission set of present embodiment is counted acquiring unit 101 and can be comprised that specifically propagation delay time acquisition module 1111, the first time-delay estimator acquisition module 1112, the second time-delay estimator acquisition module 1113 and process count acquisition module 1114.

Wherein the propagation delay time acquisition module 1111, are used for obtaining propagation delay time according to the distance between the opposite end of data transmission set and data transmission set; The first time-delay estimator acquisition module 1112 is connected with propagation delay time acquisition module 1111, and the propagation delay time that the first time-delay estimator acquisition module 1112 is used for obtaining according to propagation delay time acquisition module 1111 and the data processing time delay of data transmission set are obtained first of the data transmission set correspondence estimator of delaying time; The second time-delay estimator acquisition module 1113 is connected with propagation delay time acquisition module 1111, and the data processing time delay of the propagation delay time that the first time-delay estimator acquisition module 1112 is used for obtaining according to propagation delay time acquisition module 1111 and the opposite end of data transmission set is obtained second estimator of delaying time of the opposite end correspondence of data transmission set; Process is counted acquisition module 1114 and is connected with the second time-delay estimator acquisition module 1113 with the first time-delay estimator acquisition module 1112 respectively, and process is counted acquisition module 1114 and is used for obtaining the maximum process number of HARQ according to second estimator of delaying time that the first time-delay estimator and second that the first time-delay estimator acquisition module 1112 obtains delays time that estimator acquisition module 1113 obtains.

Concrete, process is counted acquisition module 1114 and can be used to get greater than the even number of the first time-delay estimator and the second time-delay estimator sum maximum process number as HARQ.Concrete, the first time-delay estimator acquisition module 1112 can be used to get greater than the smallest positive integral of the data processing time delay sum of propagation delay time and data transmission set as first estimator of delaying time; The second time-delay estimator acquisition module 1113; Be used to get greater than according to the smallest positive integral of the data processing time delay sum of the opposite end of propagation delay time and data transmission set as the second time-delay estimator; Can guarantee data transmission success effectively like this; The time that can also guarantee a HARQ process data transmission effectively is the shortest, guarantees the efficient of transfer of data.

Further alternatively; The data transmission set of present embodiment also comprises parameter modifying unit; This parameter modifying unit is used for when needs carry out semi-persistent scheduling, revises the semi-persistent scheduling number of processes parameter in the radio resource control layer according to the maximum process number of the HARQ that is obtained.And/or this parameter modifying unit, be used for revising media access control layer HARQ winding time timer parameter according to the maximum process number of the HARQ that is obtained.

Alternatively; Data transmission set is a subscriber equipment in present embodiment; When the opposite end of data transmission set is the base station; Be arranged on data transmission unit 102 in this subscriber equipment, be used for sending upstream data through Physical Uplink Shared Channel to the base station on the corresponding subframe of the maximum process number of 1/2nd HARQ after first subframe, first subframe is Downlink Control Information is sent in a subframe from the base station to subscriber equipment; And, be used to receive the HARQ feedback information that sends on the corresponding subframe of the maximum process number of the HARQ of base station after first subframe.

Corresponding at this moment; Maximum process in the subscriber equipment is counted acquiring unit; Specifically be used to receive the maximum process number of the HARQ that sends the base station, to be the base station obtain according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of data transmission set, data transmission set and data transmission set and data transmission set the maximum process number of HARQ.

Alternatively, the maximum process in the data transmission set of present embodiment is counted acquiring unit 101 and specifically is used to receive the Downlink Control Information that send the base station on Physical Downlink Control Channel, carries the maximum process number of HARQ in the Downlink Control Information.

Further alternatively; When data transmission set is the base station; When the opposite end of data transmission set is subscriber equipment; Be arranged on the data transmission unit 102 in the base station, specifically can be used to receive the HARQ feedback information that the corresponding subframe of maximum process number of 1/2nd HARQs of subscriber equipment after second subframe is sent, second subframe is that the subframe that Physical Downlink Shared Channel sends downlink data is passed through in the base station; And, be used for sending downlink data according to the HARQ feedback information on the corresponding subframe of the maximum process number of the HARQ after second subframe.

Each unit in the data transmission set of present embodiment with and the module that comprises realize that the concrete working method of transfer of data is identical with the realization of above-mentioned correlation technique embodiment; Can repeat no more at this referring to the related content among the above-mentioned correlation technique embodiment in detail.

From the above mentioned, the technical scheme of present embodiment has following advantage at least:

More than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all be included in protection scope of the present invention.

Claims

1. a data transmission method is characterized in that, comprising:

2. method according to claim 1 is characterized in that, said data transmission set obtains the maximum process number of carrying out the automatic repeat requests of mixing that transfer of data adopted, comprising:

Said data transmission set obtains the maximum process number of the automatic repeat requests of said mixing according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of said data transmission set, said data transmission set and said data transmission set and said data transmission set.

3. method according to claim 2; It is characterized in that; Said data transmission set obtains the maximum process number of the automatic repeat requests of said mixing according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of said data transmission set, said data transmission set and said data transmission set and said data transmission set, comprising:

Said data transmission set obtains propagation delay time according to the distance between the opposite end of said data transmission set and said data transmission set;

Said data transmission set obtains the first corresponding time-delay estimator of said data transmission set according to the data processing time delay of said propagation delay time and said data transmission set;

Said data transmission set obtains the second corresponding time-delay estimator of opposite end of said data transmission set according to the data processing time delay of the opposite end of said propagation delay time and said data transmission set;

Said data transmission set obtains the maximum process number of the automatic repeat requests of said mixing according to said first time-delay estimator and the said second time-delay estimator.

4. method according to claim 3 is characterized in that, said data transmission set obtains the first corresponding time-delay estimator of said data transmission set according to the data processing time delay of said propagation delay time and said data transmission set, comprising:

Said data transmission set is got greater than the smallest positive integral of the data processing time delay sum of said propagation delay time and said data transmission set as the said first time-delay estimator;

Said data transmission set obtains the second time-delay estimator of the opposite end correspondence of said data transmission set according to the data processing time delay of the opposite end of said propagation delay time and said data transmission set, comprising:

Said data transmission set is got greater than the smallest positive integral of the data processing time delay sum of the opposite end of said propagation delay time and said data transmission set as the said second time-delay estimator;

Further, said data transmission set obtains the maximum process number of the automatic repeat requests of said mixing according to said first time-delay estimator and the said second time-delay estimator, comprising:

Said data transmission set is got greater than the even number of said first time-delay estimator and the said second time-delay estimator sum maximum process number as the automatic repeat requests of said mixing.

5. according to each described method of claim 1 to 4, it is characterized in that said method also comprises following at least one step:

When needs carried out semi-persistent scheduling, said data transmission set was revised the semi-persistent scheduling number of processes parameter in the radio resource control layer according to the maximum process number of the automatic repeat requests of said mixing; With

Said data transmission set is revised according to the maximum process number of the automatic repeat requests of said mixing and is mixed automatic repeat requests winding time timer parameter in the media access control layer.

6. according to each described method of claim 1 to 4; It is characterized in that; When said data transmission set is a subscriber equipment; The opposite end of said data transmission set is the base station, and said data transmission set carries out transfer of data according to the maximum process number of the automatic repeat requests of said mixing and the opposite end of said data transmission set, comprising:

Send upstream data through Physical Uplink Shared Channel to said base station on the subframe of the maximum process number correspondence of the automatic repeat requests of 1/2nd mixing of said subscriber equipment after first subframe, said first subframe is Downlink Control Information is sent in a subframe from the base station to subscriber equipment;

Said subscriber equipment receives the automatic repeat requests feedback information of mixing that sends on the corresponding subframe of the maximum process number of the automatic repeat requests of mixing of said base station after first subframe;

Perhaps, when said data transmission set is the base station, the opposite end of said data transmission set is a subscriber equipment, and said data transmission set carries out transfer of data according to the maximum process number of the automatic repeat requests of said mixing and the opposite end of said data transmission set, comprising:

Said base station receive said subscriber equipment after second subframe 1/2nd mix automatic repeat requests the automatic repeat requests feedback information of mixing that sends of the corresponding subframe of maximum process number, said second subframe is that the subframe that Physical Downlink Shared Channel sends downlink data is passed through in the base station;

Send downlink data according to the automatic repeat requests feedback information of said mixing on the subframe of the maximum process number correspondence of the automatic repeat requests of mixing of said base station after said second subframe.

7. according to the said method of claim 1, it is characterized in that when said data transmission set is a subscriber equipment, the opposite end of said data transmission set is the base station; Said data transmission set obtains the maximum process number of carrying out the automatic repeat requests of mixing that transfer of data adopted; Comprise: said subscriber equipment receives the maximum process number of the automatic repeat requests of said mixing of said base station sending, and to be said base station obtain according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of said data transmission set, said data transmission set and said data transmission set and said data transmission set the maximum process number of the automatic repeat requests of said mixing.

8. according to the said method of claim 7, it is characterized in that said subscriber equipment receives the maximum process number of the automatic repeat requests of said mixing of sending said base station, comprising:

Said subscriber equipment receives the Downlink Control Information that send said base station on Physical Downlink Control Channel, carry the maximum process number of the automatic repeat requests of said mixing in the said Downlink Control Information.

9. a data transmission set is characterized in that, said equipment comprises:

Maximum process is counted acquiring unit; Be used for when the distance between the opposite end of said data transmission set and data transmission set during greater than distance threshold; Obtain the maximum process number of carrying out the automatic repeat requests of mixing that transfer of data adopted, the maximum process number of the automatic repeat requests of said mixing is to obtain according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of said data transmission set, said data transmission set and said data transmission set and said data transmission set;

10. equipment according to claim 9 is characterized in that:

Said maximum process is counted acquiring unit; Be used for when the distance between the opposite end of said data transmission set and data transmission set during, obtain the maximum process number of the automatic repeat requests of said mixing according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of said data transmission set, said data transmission set and said data transmission set and said data transmission set greater than distance threshold.

11. equipment according to claim 10 is characterized in that, said maximum process is counted acquiring unit and is comprised that propagation delay time acquisition module, the first time-delay estimator acquisition module, the second time-delay estimator acquisition module and process count acquisition module;

Said propagation delay time acquisition module is used for obtaining propagation delay time according to the distance between the opposite end of said data transmission set and said data transmission set;

The said first time-delay estimator acquisition module is used for obtaining the first corresponding time-delay estimator of said data transmission set according to the data processing time delay of said propagation delay time and said data transmission set;

The said second time-delay estimator acquisition module is used for obtaining according to the data processing time delay of the opposite end of said propagation delay time and said data transmission set the second corresponding time-delay estimator of opposite end of said data transmission set;

Said process is counted acquisition module, is used for obtaining the maximum process number of the automatic repeat requests of said mixing according to said first time-delay estimator and the said second time-delay estimator.

12. equipment according to claim 11 is characterized in that:

The said first time-delay estimator acquisition module specifically is used to get smallest positive integral greater than the data processing time delay sum of said propagation delay time and said data transmission set as the said first time-delay estimator;

The said second time-delay estimator acquisition module, specifically be used to get greater than according to the smallest positive integral of the data processing time delay sum of the opposite end of said propagation delay time and said data transmission set as the said second time-delay estimator;

Said process is counted acquisition module, specifically is used to get greater than the even number of said first time-delay estimator and the said second time-delay estimator sum maximum process number as the automatic repeat requests of said mixing.

13., it is characterized in that said equipment also comprises parameter modifying unit according to each described equipment of claim 9 to 12;

Said parameter modifying unit is used for when needs carry out semi-persistent scheduling, revises the semi-persistent scheduling number of processes parameter in the radio resource control layer according to the maximum process number of the automatic repeat requests of said mixing; And/or

Said parameter modifying unit is used for revising media access control layer according to the maximum process number of the automatic repeat requests of said mixing and mixes automatic repeat requests winding time timer parameter.

14. according to each described equipment of claim 9 to 12; It is characterized in that; When said data transmission set is a subscriber equipment, the opposite end of said data transmission set is the base station, said data transmission unit; Specifically be used for 1/2nd mixing on the corresponding subframe of the maximum process number of automatic repeat requests and send upstream data through Physical Uplink Shared Channel to said base station after first subframe, said first subframe is Downlink Control Information is sent in a subframe from the base station to subscriber equipment; And the automatic repeat requests feedback information of mixing that sends on the corresponding subframe of the maximum process number that receives the automatic repeat requests of mixing of said base station after first subframe;

Perhaps working as said data transmission set is the base station; The opposite end of said data transmission set is a subscriber equipment; Said data transmission unit; Specifically be used to receive said subscriber equipment after second subframe 1/2nd mix automatic repeat requests the automatic repeat requests feedback information of mixing that sends of the corresponding subframe of maximum process number, said second subframe is that the subframe that Physical Downlink Shared Channel sends downlink data is passed through in the base station; And send downlink data according to the automatic repeat requests feedback information of said mixing on the subframe of the maximum process number correspondence of the automatic repeat requests of mixing after said second subframe.

15. equipment according to claim 9 is characterized in that, when said data transmission set is a subscriber equipment, the opposite end of said data transmission set is the base station; Said maximum process is counted acquiring unit; Specifically be used to receive the maximum process number of the automatic repeat requests of said mixing of sending said base station, to be said base station obtain according to the distance between the opposite end of the data processing time delay of the opposite end of the data processing time delay of said data transmission set, said data transmission set and said data transmission set and said data transmission set the maximum process number of the automatic repeat requests of said mixing.

16. equipment according to claim 15 is characterized in that,

Said maximum process is counted acquiring unit, specifically is used to receive the Downlink Control Information that send on Physical Downlink Control Channel said base station, carries the maximum process number of the automatic repeat requests of said mixing in the said Downlink Control Information; And from said Downlink Control Information, obtain the maximum process number of the automatic repeat requests of said mixing.