CN101018108A - The data transmission method and system and data transmission and receiving device - Google Patents
The data transmission method and system and data transmission and receiving device Download PDFInfo
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Abstract
The provided data transmission method comprises: the transmission side simultaneous transmits multiple data packages to the receiving side; the latter simultaneous demodulates and checks all packages, and returns receiving condition to every transition end; the latter may re-transmit data according to feedback result. This invention reduces time delay, and improves transmission efficiency.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of data transmission method, system and device.
Background technology
WCDMA (Wideband Code Division Multiple Access, the Wideband Code Division Multiple Access (WCDMA) access) technology protocol version the earliest is Release99, in this version, the carrying of uplink and downlink business all is based on dedicated channel, and the message transmission rate of uplink and downlink all can reach 384Kbps.
Because the user is more and more higher to the demand of message transmission rate, the WCDMA standard formulation is organized and has been released down high-speed data bag access technology and up-high speed data packet access technique subsequently successively, these two kinds of access technologies can provide the peak rate up to 14.4Mbps and 5.76Mbps respectively, and spectrum efficiency has also obtained very big raising.
HSDPA (High Speed Downlink Packet Access, the high-speed downstream bag inserts) as high-speed down link data packet access technique, be primarily characterized in that and introduced link circuit self-adapting and fast dispatch and HARQ (Hybrid Automatic Repeat Request, physical layer mixed self-adapting repeat requests) technology such as, purpose is that the base station can follow the tracks of current channel variance situation fast, grasps the distribution condition of resource; Introduce the HARQ technology and can retransmit the partial data of makeing mistakes fast, that is to say, the user and the data block size that are scheduled for determined in the scheduling meeting of MAC (Medium AccessControl, medium access control) layer according to parameters such as channel conditions.
The HSDPA technology is in the version that was incorporated into 3GPP Release5 in 2002, the main feature of HSDPA system comprises: the short frame that adopts 2ms, adopt HARQ and AMC (Adaptive Modulationand Coding in physical layer, Adaptive Modulation and Coding) technology, introduce 16QAM (Quadrature AmplitudeModulation, the hexadecimal quadrature amplitude modulation(PAM)) high order modulation improves the availability of frequency spectrum, realizes the shared channel scheduling of each UE (subscriber equipment) by sign indicating number branch and time-division.HARQ technology has wherein adopted SAW (Stop-And-Wait, stop etc.) agreement, require the base station after sending data to UE, need obtain UE feeding back ACK/NACK (correct answer signal/wrong responses signal), the base station can know by ACK/NACK whether UE correctly receives data, thereby determine and still to send new data to the UE data retransmission to UE.HSDPA has increased by two physical channels descending, and one is HS-SCCH (High SpeedShared Control Channel, High-Speed Shared Control Channel), is used to carry the required signaling of demodulation companion data channel HS-PDSCH; Another is HS-PDSCH (High Speed Physicai DownlinkShared Channel, a high-speed physical downlink shared channel (HS-PDSCH)), is used to carry user's data information.HSDPA is at a up physical channel HS-DPCCH (the high speed-dedicated physical controlchannel that increased, High-Speed Dedicated Physical Control Channel), whether the downlink data frame HS-PDSCH that this channel is used to carry user feedback receives correct information is ACK/NACK, perhaps is used to carry CQI (channel quality indication (CQI) information).Simultaneously, the HSDPA system has also increased MAC-hs (Medium AccessControl-high speed at the MAC layer, the access control of high speed shared channels medium) Flow Control of HSDPA is supported in the sublayer, carrying out fast dispatch/priority management, HARQ and TFRI (Transport Format and ResourceIndicator, transformat and resource indication) selects.
After introducing the HSDPA technology, the process of carrying out transfer of data between network side and the UE is as follows:
Network side MAC layer is at first determined next TTI (English by parameters such as CQI and data priorities, Transmission Time Interval) UE that will be scheduled for and corresponding M AC PDU (Packet DataUnit, Packet Data Unit) data, and select control information such as suitable process number, code modulation mode, redundancy versions and a UE ID for this PDU data and notify physical layer.Physical layer adds this MACPDU CRC (cyclic redundancy check (CRC)) check code and carries out modulation treatment, by the HS-SCCH channel corresponding UE is informed in these control informations then, utilizes the HS-PDSCH channel to send this MAC PDU to UE then.UE carries out demodulate reception according to the information on the HS-SCCH to MAC PDU, and whether the data that receive by CRC check are correct, passes through the HS-DPCCH channel then to network side physical layer feedback ACK/NACK.
In demanding system to peak rate, such as OFDM (Orthogonal Frequency DivisionMultiplexing, OFDM) system, in order to reach the high-speed transfer of single UE, will be for it distribute a plurality of Resource Block in a TTI, a part of data of a MAC PDU of each Resource Block transmission.Because each Resource Block all might be made mistakes in the process of transmission, and each MAC PDU need do the as a whole demodulation verification reception of carrying out, therefore if the data of a Resource Block transmission are made mistakes and just may be caused whole re-transmissions of this MAC PDU, and resource block number to have more wrong possibility more just big more.Therefore the technical scheme that adopts above-mentioned data to pass is wasted data transmission resources and time greatly, and data transmission efficiency is low.Meanwhile, the receiving terminal physical layer just can be carried out the demodulation checking treatment after needing the data with all Resource Block transmission collect, thus receiving terminal that data are carried out demodulation checking treatment time delay is very long.
The technical scheme that also has a kind of transfer of data at present.Detailed process is: network side MAC layer is given physical layer with MACPDU, and physical layer is split into a plurality of sub-PDU after receiving this MAC PDU, and is respectively each sub-PDU selection control information; Then the control information of each sub-PDU is informed corresponding UE, and send UE simultaneously to after each sub-PDU added check code and carry out modulation treatment.The UE physical layer is carried out the demodulation checking treatment to each sub-PDU simultaneously according to the control information of receiving, if all sub-PDU are correct, the UE physical layer is reduced into a MAC PDU with all sub-PDU and gives MAC layer, and to ack signal of network side physical layer feedback; If wherein one or more sub-PDU mistakes, the UE physical layer can be to NACK signal of network side physical layer feedback, and informing network stresses to pass all sub-PDU.
Because the UE physical layer can be carried out the demodulation checking treatment to each sub-PDU simultaneously, therefore can reduce receiving terminal carries out demodulation checking treatment time delay to data.But because when one or more sub-PDU mistake, the UE physical layer is understood informing network stress to pass all sub-PDU, has the problem of invalid re-transmission equally, wastes data transmission resources and time greatly, causes data transmission efficiency low.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of data transmission method, system and device, not only can reduce the data demodulates checking treatment time delay of receiving terminal, and can effectively avoid invalid retransmit issue, thereby improve data transmission efficiency.
For achieving the above object, the invention provides a kind of data transmission method, comprising:
Transmitting terminal sends to receiving terminal with a plurality of data cells simultaneously, and receiving terminal carries out the demodulation verification to each data cell simultaneously and receives, and feeds back the reception condition of each data cell to transmitting terminal, and transmitting terminal carries out data re-transmission according to described feedback result to be handled.
A plurality of data cells that described transmitting terminal sends to receiving terminal comprise: transmitting terminal media access control MAC layer is submitted to a plurality of MAC Packet Data Unit PDU of transmitting terminal physical layer, perhaps, the transmitting terminal physical layer is submitted to a plurality of sub-PDU that its a MAC PDU splits into transmitting terminal MAC layer.
When described a plurality of MAC PDU are transmitting terminal MAC layer when being submitted to a plurality of MACPDU of transmitting terminal physical layer, this method comprises the steps:
A, transmitting terminal MAC layer are given the transmitting terminal physical layer with a plurality of MAC PDU data simultaneously, and give the transmitting terminal physical layer with the control information of each MAC PDU data simultaneously;
B, transmitting terminal physical layer send described control information to the receiving terminal physical layer simultaneously, and respectively described MAC PDU are added check code according to described control information and also carry out respectively sending receiving terminal simultaneously to after the modulation treatment;
C, receiving terminal physical layer are carried out the demodulation verification to corresponding M AC PDU simultaneously according to the control information of each MAC PDU and are received, and feed back the reception condition of each MAC PDU to transmitting terminal;
D, transmitting terminal carry out data re-transmission according to described feedback result to be handled.
Described step a specifically comprises:
A1, transmitting terminal MAC layer determine a plurality of MAC PDU data that will transmit according to customer service characteristics, channel conditions and dispatching algorithm parameter, and be each MAC PDU data selection corresponding control information;
A2, transmitting terminal MAC layer are given the transmitting terminal physical layer after each MAC PDU data encapsulation is become MAC PDU, and simultaneously the control information of each MAC PDU are notified to the transmitting terminal physical layer.
Described step b specifically comprises:
The transmitting terminal physical layer sends described control information to the receiving terminal physical layer by High-Speed Shared Control Channel simultaneously; And respectively described MAC PDU being added check code according to described control information also carries out respectively sending receiving terminal to by high-speed physical downlink shared channel (HS-PDSCH) simultaneously after the modulation treatment.
Described step c comprises:
The receiving terminal physical layer is carried out the demodulation checking treatment to corresponding M AC PDU simultaneously according to the control information of each MAC PDU, if described MAC PDU is correct, then it is given receiving terminal MAC layer, and feeds back described MAC PDU correctly reception to transmitting terminal; If described MAC PDU mistake is then fed back described MAC PDU mistake to transmitting terminal.
Receiving terminal described in the step c comprises to the step that transmitting terminal feeds back each MAC PDU reception condition:
C1, receiving terminal adopt sign indicating number branch mode to feed back the reception condition of described a plurality of MAC PDU to transmitting terminal; Perhaps,
C2, receiving terminal adopt the frequency division mode to feed back the reception condition of each MAC PDU to transmitting terminal; Perhaps,
C3, receiving terminal together feed back to transmitting terminal with the information of each MAC PDU reception condition and sign respective process number.
Described step c1 specifically comprises:
The receiving terminal physical layer is determined a code word according to the orthogonal code and the pre-defined algorithm of each MAC PDU process number correspondence, then this code word is modulated into a signal and sends to transmitting terminal as feedback result; And described steps d specifically comprises:
Transmitting terminal is determined the reception condition of each MACPDU after described signal is demodulated to code word again according to described pre-defined algorithm, and carries out data re-transmission according to the reception condition of each MAC PDU and handle.
Described step c2 specifically comprises:
The receiving terminal physical layer with the reception condition of each MAC PDU by sending to transmitting terminal with the corresponding subband of the process number of this MAC PDU; And described steps d specifically comprises:
Transmitting terminal is determined the reception condition of each data according to the corresponding relation of subband and process number, and carries out data re-transmission according to the reception condition of each MAC PDU and handle.
The present invention also provides a kind of data sending device, and this device comprises:
Data transmission blocks is used for simultaneously a plurality of data cells being sent to receiving terminal;
Data feedback result processing module is used for the feedback result about each data cell of receiving terminal is carried out demodulation process and result is notified to described data transmission blocks.
Described data transmission blocks comprises:
Send data and determine submodule, be arranged at the MAC layer, be used for definite a plurality of MACPDU data that will transmit, and be that each MAC PDU data is selected corresponding control information; Give data transmission submodule with described a plurality of MAC PDU and corresponding control information then;
Data send submodule, are arranged at physical layer, are used for sending described control information to the receiving terminal physical layer simultaneously, and respectively described MAC PDU are added check code according to described control information and also carry out respectively sending receiving terminal simultaneously to after the modulation treatment.
The present invention also provides a kind of data sink, and this device comprises:
Data reception module is arranged at physical layer, is used for simultaneously each data cell that receives being carried out the demodulation verification and receives, and feed back the reception condition of each data cell to transmitting terminal.
Described data reception module comprises:
Demodulation checking treatment submodule is used for simultaneously its corresponding MAC PDU being carried out after the demodulation checking treatment result being notified to data feedback submodule according to the control information of each MAC PDU, and gives receiving terminal MAC layer with correct MAC PDU;
Data feedbacks submodule, be used for when the demodulation check results be described MAC PDU when correct, feed back described MAC PDU correctly reception to transmitting terminal; When the demodulation check results is described MAC PDU mistake, then feed back described MAC PDU mistake to transmitting terminal.
The present invention also provides a kind of data transmission system, and this system comprises:
Data transmission blocks is arranged at transmitting terminal, is used for simultaneously a plurality of data cells being sent to receiving terminal;
Data reception module is arranged at receiving terminal, is used for simultaneously each data cell being carried out the demodulation verification and receives, and feed back the reception condition of each data cell to transmitting terminal;
Data feedback result processing module is arranged at transmitting terminal, is used for the Data Receiving feedback result of receiving terminal is carried out demodulation process and result is notified to described data transmission blocks.
Described data transmission blocks comprises:
Send data and determine submodule, be arranged at transmitting terminal MAC layer, be used for definite a plurality of MAC PDU data that will transmit, and be that each MAC PDU data is selected corresponding control information; Give data transmission submodule with described a plurality of MAC PDU and corresponding control information then;
Data send submodule, are arranged at the transmitting terminal physical layer, are used for sending described control information to receiving terminal simultaneously, and respectively described MAC PDU are added check code according to described control information and also carry out respectively sending receiving terminal simultaneously to after the modulation treatment.
Described data reception module comprises:
Demodulation checking treatment submodule, be arranged at the receiving terminal physical layer, be used for simultaneously its corresponding MAC PDU being carried out after the demodulation checking treatment result being notified to data feedback submodule, and give receiving terminal MAC layer correct MAC PDU according to the control information of each MAC PDU;
Data feedbacks submodule is arranged at the receiving terminal physical layer, be used for when described demodulation check results be described MAC PDU when correct, feed back described MAC PDU correctly reception to transmitting terminal; When described demodulation check results is described MAC PDU mistake, then feed back described MAC PDU mistake to transmitting terminal.
Description by technique scheme as can be known, technical scheme provided by the invention has following advantage:
1, transmitting terminal can send a plurality of data cells to receiving terminal simultaneously, and receiving terminal can carry out the demodulation verification to each data cell simultaneously and receive, and therefore can reduce the data demodulates checking treatment time delay of receiving terminal;
2, the receiving terminal physical layer respectively to transmitting terminal feedback reception condition, therefore can effectively be avoided the invalid re-transmission of data at each data cell, saves data transmission resources and time, thereby improves data transmission efficiency greatly;
3, utilize sign indicating number to divide and the feedback system of frequency division, need not carry the information of expression data procedures number in the feedback information, therefore can reduce the expense of system, improve the throughput of system.
Description of drawings
Fig. 1 is the flow chart of the data transmission method that provides of the embodiment of the invention;
Fig. 2 is the structural representation of the data transmission system that provides of the embodiment of the invention.
Embodiment
Core of the present invention is: transmitting terminal sends to receiving terminal with a plurality of data cells simultaneously, receiving terminal carries out the demodulation verification to each data cell simultaneously and receives, and feeding back the reception condition of each data cell to transmitting terminal, transmitting terminal carries out data re-transmission according to feedback result to be handled.
Wherein, a plurality of data cells that transmitting terminal sends to receiving terminal comprise: transmitting terminal MAC layer is submitted to a plurality of MAC PDU of local terminal physical layer, and perhaps, the transmitting terminal physical layer is submitted to a plurality of sub-PDU that its a MAC PDU splits into local terminal MAC layer.
Technical scheme provided by the invention is applicable to the transmission of upstream data and downlink data; Transmitting terminal is UE when carrying out transmitting uplink data, and receiving terminal is a network side; Transmitting terminal is a network side when carrying out downlink data transmission, and receiving terminal is UE.
For the present invention there being further understanding, method provided by the invention is described in detail below in conjunction with accompanying drawing.
The a plurality of MAC PDU that send to receiving terminal with transmitting terminal are that a plurality of MAC PDU and the UE that transmitting terminal MAC layer is submitted to the local terminal physical layer is that receiving terminal is that example is elaborated, and concrete data transmission procedure comprises the steps: as shown in Figure 1
Step 11: network side MAC layer is determined the UE that is scheduled for.
Network side MAC layer is determined the UE that next TTI will be scheduled for according to parameters such as CQI and data priorities.
Step 12: network side MAC layer is the resource of this UE distribute data transmission, determines a plurality of MAC PDU data and the corresponding control information that will send.Specifically comprise:
Network side MAC layer distributes the resource of carrying out transfer of data according to customer service characteristics, channel conditions and certain parameters such as dispatching algorithm for this UE;
Network side MAC layer determines to send to a plurality of MAC PDU data of this UE according to customer service characteristics, channel conditions and certain parameters such as dispatching algorithm, and is that each MAC PDU data is selected corresponding control information.
Control information comprises: process number, code modulation mode, redundancy versions and UE ID information such as (signs).
Wherein, the process number difference of each MAC PDU data;
The code modulation mode of each MAC PDU data can be the same or different; Code modulation mode comprises modes such as QPSK (Quadrature (Quatemary) Phase Shift Keying, Quadrature Phase Shift Keying), 16QAM.
Step 13: a plurality of MAC PDU data that network side MAC layer will be determined are given the local terminal physical layer, and corresponding control information is notified to the local terminal physical layer.
After becoming MAC PDU, each MAC PDU data encapsulation that network side MAC layer will be determined gives the local terminal physical layer; And the control information of each MAC PDU data is notified to the local terminal physical layer.
Step 14: the network side physical layer sends the control information that receives the physical layer of UE to simultaneously, and a plurality of MAC PDU that receive are added the CRC check sign indicating number respectively, and carries out sending to simultaneously after the modulation treatment physical layer of UE.
In cdma system, the control information of a plurality of MAC PDU that the network side physical layer will receive can send the UE physical layer to by the HS-SCCH channel simultaneously.
After the network side physical layer receives MAC PDU, respectively each MAC PDU is added the CRC check sign indicating number, and carry out sending to simultaneously after the modulation treatment physical layer of UE according to the control information of each MAC PDU.
In cdma system, the network side physical layer can send a plurality of MACPDU to the UE physical layer simultaneously by the HS-PDSCH channel.
Step 15:UE physical layer is carried out the demodulation checking treatment to corresponding M ACPDU simultaneously according to the control information of each MAC PDU, and to the reception condition of each MAC PDU of network side physical layer feedback.
If a MAC PDU is through correct after the checking treatment, then the UE physical layer is given MAC layer with it, and correctly receives to this MAC PDU of network side physical layer feedback; If a MAC PDU is through mistake after the checking treatment, then the UE physical layer is to this MAC PDU mistake of network side physical layer feedback.
Step 16: the network side physical layer is carried out data re-transmission according to feedback result and is handled.
Network side can determine the transmission of data next time according to the feedback of UE and other parameters and in conjunction with dispatching algorithm.
The UE physical layer can adopt following three kinds of modes to the reception condition of each MAC PDU of network side physical layer feedback:
Mode one: the UE physical layer is when the reception condition of each MAC PDU of network side physical layer feedback, need in feedback message, carry the information of expression respective process number, the network side physical layer determines that according to the information of the expression respective process in the feedback message number whether the data of respective process correctly receive, and handle thereby carry out data re-transmission.
The UE physical layer can be respectively be carried on the feedback result of each MAC PDU and sends to network side in a piece of news; Also the feedback result of a plurality of MAC PDU can be carried on and send to network side in a piece of news.
Mode two: adopt sign indicating number branch mode to feed back the reception condition of each MAC PDU to network side, such as, the UE physical layer can be determined a code word according to the orthogonal code and the pre-defined algorithm of each process number correspondence, then this code word is modulated into a signal and sends to the network side physical layer as feedback result; The network side physical layer is demodulated to the reception condition of determining each MAC PDU after the code word again according to pre-defined algorithm with this signal, carries out data re-transmission then and handles.The specific implementation process is as follows:
UE and the network side corresponding orthogonal code of each process number of making an appointment, that is to say that each process number all wants a code word in corresponding one group of orthogonal code sets, when the UE physical layer need be to each MAC PDU reception condition of network side physical layer feedback, at first that the feedback result of each MAC PDU is corresponding with this MAC PDU process number respectively orthogonal code multiplies each other, then the results added that obtains is obtained a code word, send to network side after at last this code word being formed a signal by operations such as modulation; The network side physical layer obtains a code word through operations such as demodulation after receiving this signal equally, then that this code word is corresponding with each MAC PDU process number respectively orthogonal code multiplies each other, judge the reception condition of each MAC PDU again according to multiplied result, thereby carry out retransmission process.
Be elaborated for example below:
Suppose that system carries out the transmission of 3 MAC PDU simultaneously to UE, the process number of each MAC PDU correspondence is respectively 1,3,5, and corresponding respectively orthogonal code is (1,1,1 ,-1) (1,1 ,-1,1) (1,-1,1,1), and feeding back ACK when data are correct, represent that with 1 feedback NACK represents with-1 during error in data.UE carries out verification after receiving these 3 data simultaneously, and the error in data of discovery procedure number 1 and process number 5 receives, and the data of process number 3 correctly receive.The UE physical layer is fed back to the network side physical layer these 3 data correctness, and concrete steps are as follows:
1, the UE physical layer data feedback-1 of deterministic process number 1 at first, the data feedback 1 of process number 3, the data feedback-1 of process number 5;
2, the UE physical layer multiplies each other the code word of each process number correspondence and the feedback result of corresponding data, obtains following result: the result corresponding with the data of process number 1 is (1 ,-1,-1,1), corresponding with the data of process number 3 result is (1,1,-1,1), corresponding with the data of process number 5 result is (1,1,-1 ,-1);
3, the UE physical layer obtains a new code word (1,1 ,-3,1) with three code word additions that obtain in the step 2;
4, the code word that step 3 obtained by operations such as modulation of UE physical layer is modulated into a signal and sends to the network side physical layer as feedback result;
5, the network side physical layer is carried out demodulation to the feedback signal of receiving, supposes the transmission course zero defect, and the network side physical layer will demodulate a code word (1,1 ,-3,1) so;
6, the network side physical layer multiplies each other with the code word that the orthogonal code and the step 5 of each process number correspondence obtains, and obtain following result: the result corresponding with the data of process number 1 is (1,1,-3,-1), corresponding with the data of process number 3 result is (1,1,3,1), corresponding with process number 5 result is (1 ,-1,-3,1);
7, three code word contents addition of respectively step 6 being obtained of network side physical layer obtains following result: the result corresponding with process number 1 is-4, and the result of process number 3 correspondences is 4, and the result corresponding with process number 5 is-4;
8, with 0 as decision threshold, promptly when the result who obtains in the step 7 greater than 0 the time, think that then feedback result is ACK, when the result who obtains in the step 7 less than 0 the time, think that then feedback result is NACK.
Therefore the network side physical layer can be judged: the feedback result of the data of process number 1 is NACK, and the feedback result of the data of process number 3 is ACK, and the feedback result of the data of process number 5 is NACK.
Network side is according to other situation decision such as feedback result and channel condition transmission of secondary data down then.
In such scheme, the numeral of ACK/NACK correspondence is not limited to 1/-1, and when the numeral of ACK/NACK correspondence was not 1/-1, the judgement thresholding in the step 8 need be done corresponding adjustment.
Mode three: adopt the frequency division mode to feed back the reception condition of each MAC PDU to network side, detailed process is as follows:
Suppose that it is 8 that largest data transfer that system allows is crossed number of passes, promptly system at most only allows to transmit simultaneously 8 MAC PDU.UE is divided into 8 subbands with the whole system bandwidth, sets up the corresponding relation and the informing network side of each subband and each process number then.When the UE physical layer need be to the reception condition of each data of network side physical layer feedback, by sending to network side with the corresponding subband of the process number of these data, the network side physical layer is judged the feedback result of the data of respective process number according to the corresponding relation of subband and data procedures number with the feedback result of each data.
Be elaborated for example below:
Suppose that it is 8 that largest data transfer that system allows is crossed number of passes, the corresponding relation of each subband and each data procedures number is: subband 1 corresponding process number 1 ... subband 8 corresponding process numbers 8; Network side transmits 3 MAC PDU simultaneously to UE, and corresponding process number is respectively 1,3,5.UE carries out the demodulation checking treatment after receiving these 3 MAC PDU, and the error in data of discovery procedure numbers 1 and 5 receives, and the data of process number 2 correctly receive.UE need feed back these 3 data correctness, and concrete steps are as follows:
1, the UE physical layer data feedback NACK of deterministic process number 1 at first, the data feeding back ACK of process number 3, the data feedback NACK of process number 5;
2, the UE physical layer transmits NACK and gives network side on subband 1 and subband 5, transmits ACK simultaneously and give network side on subband 3;
3, the network side physical layer is all received NACK on subband 1 and subband 5, on subband 3, receive ACK, corresponding relation according to subband and process number, the data of network side physical layer deterministic process number 1 and process number 5 are received by mistake, the data of process number 3 are correctly received, then according to other situation decision such as feedback result and channel condition transmission of secondary data down.
As can be seen, adopt sign indicating number branch mode and frequency division mode to feed back reception condition, in feedback message, can carry the information of each process number of expression, therefore can reduce the expense of system, improve the throughput of system.
Technical scheme provided by the invention is equally applicable to UE as data sending terminal, the network side situation as data receiver.When UE as data sending terminal, network side during as data receiver, at first the network side by the UE correspondence carries out resource allocation and resource allocation information is notified to UE, UE sends MAC PDU to network side then.Concrete data transmission procedure and above-mentioned data transmission procedure are basic identical.
The technical scheme of transfer of data provided by the invention is applicable to cdma system, ofdm system, or the like.
The present invention also provides a kind of data sending device, and this device comprises: data transmission blocks and data re-transmission module, wherein:
The function of data transmission blocks is: simultaneously a plurality of data cells are sent to receiving terminal;
The function of data feedback result processing module is: the feedback result about each data cell of receiving terminal is carried out demodulation process and result is notified to data transmission blocks.
The function of data transmission blocks can determine that submodule and data send submodule and realize by sending data, wherein:
Send data and determine that submodule is arranged at the MAC layer, its function is: definite a plurality of MAC PDU data that will transmit, and be that each MAC PDU data is selected corresponding control information; A plurality of MAC PDU that will determine then and corresponding control information are given data and are sent submodule;
Data send submodule and are arranged at physical layer, its function is: send control information to the receiving terminal physical layer simultaneously, and respectively corresponding M AC PDU is added check code according to described control information and also carry out respectively sending the receiving terminal physical layer simultaneously to after the modulation treatment.
The present invention also provides a kind of data sink, and this device comprises:
Data reception module, its function is: simultaneously each data cell that receives is carried out the demodulation verification and receive, and feed back the reception condition of each data cell to transmitting terminal.
The function of data reception module can be fed back submodule by demodulation checking treatment submodule and data and realize, wherein:
Demodulation checking treatment submodule, be arranged at physical layer, its function is: the control information according to each MAC PDU is carried out after the demodulation checking treatment result being notified to data feedback submodule to its corresponding MAC PDU simultaneously, and gives receiving terminal MAC layer with correct MAC PDU;
Data feedbacks submodule is arranged at physical layer, and its function is: when the demodulation check results is MAC PDU when correct, correctly receive to this MAC PDU of transmitting terminal physical layer feedback; When the demodulation check results is MAC PDU mistake, then to this MAC PDU mistake of transmitting terminal physical layer feedback.
The present invention also provides a kind of data transmission system, and as shown in Figure 2, this system comprises: data transmission blocks, data reception module and data re-transmission module.Wherein,
Data transmission blocks is arranged at transmitting terminal, and its function is: simultaneously a plurality of data cells are sent to receiving terminal;
Data reception module is arranged at receiving terminal, and its function is: simultaneously each data cell is carried out the demodulation verification and receive, and feed back the reception condition of a plurality of data cells to transmitting terminal;
Data feedback result processing module is arranged at transmitting terminal, and its function is: the Data Receiving feedback result of receiving terminal is carried out demodulation process and result is notified to data transmission blocks.
The function of data transmission blocks can determine that submodule and data send submodule and realize by sending data, wherein:
Send data and determine that submodule is arranged at transmitting terminal MAC layer, its function is: definite a plurality of MAC PDU data that will transmit, and be that each MAC PDU data is selected corresponding control information; A plurality of MAC PDU and the corresponding control information that to determine are then given the local terminal physical layer;
Data send submodule and are arranged at the transmitting terminal physical layer, its function is: send the control information of receiving to the receiving terminal physical layer simultaneously, and respectively each MAC PDU is added check code according to the control information of receiving and also carry out respectively sending the receiving terminal physical layer simultaneously to after the modulation treatment.
The function of data reception module can be fed back submodule by demodulation checking treatment submodule and Data Receiving situation and realize, wherein:
Demodulation checking treatment submodule, be arranged at the receiving terminal physical layer, its function is: the control information according to each MACPDU is carried out after the demodulation checking treatment result being notified to Data Receiving situation feedback submodule to each MAC PDU simultaneously, and gives receiving terminal MAC layer with correct MAC PDU;
Data Receiving situation feedback submodule is arranged at the receiving terminal physical layer, be used for when the demodulation check results be that this MAC PDU is when correct, to transmitting terminal physical layer feedback ack signal; When the demodulation check results is this MAC PDU mistake, to transmitting terminal physical layer feedback NACK signal.
In sum, in technical scheme provided by the invention, transmitting terminal can send a plurality of data cells to receiving terminal simultaneously, and receiving terminal can carry out the demodulation verification to each data cell simultaneously and receive, and therefore can reduce the data demodulates checking treatment time delay of receiving terminal; The receiving terminal physical layer respectively to transmitting terminal feedback reception condition, therefore can effectively be avoided the invalid re-transmission of data at each data cell, saves data transmission resources and time, thereby improves data transmission efficiency greatly.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (16)
1, a kind of data transmission method is characterized in that, comprising:
Transmitting terminal sends to receiving terminal with a plurality of data cells simultaneously, and receiving terminal carries out the demodulation verification to each data cell simultaneously and receives, and feeds back the reception condition of each data cell to transmitting terminal, and transmitting terminal carries out data re-transmission according to described feedback result to be handled.
2, the method for claim 1, it is characterized in that, a plurality of data cells that described transmitting terminal sends to receiving terminal comprise: transmitting terminal media access control MAC layer is submitted to a plurality of MAC Packet Data Unit PDU of transmitting terminal physical layer, perhaps, the transmitting terminal physical layer is submitted to a plurality of sub-PDU that its a MAC PDU splits into transmitting terminal MAC layer.
3, method as claimed in claim 1 or 2 is characterized in that, when described a plurality of MAC PDU are transmitting terminal MAC layer when being submitted to a plurality of MAC PDU of transmitting terminal physical layer, this method comprises the steps:
A, transmitting terminal MAC layer are given the transmitting terminal physical layer with a plurality of MAC PDU data simultaneously, and give the transmitting terminal physical layer with the control information of each MAC PDU data simultaneously;
B, transmitting terminal physical layer send described control information to the receiving terminal physical layer simultaneously, and respectively described MAC PDU are added check code according to described control information and also carry out respectively sending receiving terminal simultaneously to after the modulation treatment;
C, receiving terminal physical layer are carried out the demodulation verification to corresponding M AC PDU simultaneously according to the control information of each MAC PDU and are received, and feed back the reception condition of each MAC PDU to transmitting terminal;
D, transmitting terminal carry out data re-transmission according to described feedback result to be handled.
4, method as claimed in claim 3 is characterized in that, described step a specifically comprises:
A1, transmitting terminal MAC layer determine a plurality of MAC PDU data that will transmit according to customer service characteristics, channel conditions and dispatching algorithm parameter, and be each MAC PDU data selection corresponding control information;
A2, transmitting terminal MAC layer are given the transmitting terminal physical layer after each MAC PDU data encapsulation is become MAC PDU, and simultaneously the control information of each MAC PDU are notified to the transmitting terminal physical layer.
5, method as claimed in claim 3 is characterized in that, described step b specifically comprises:
The transmitting terminal physical layer sends described control information to the receiving terminal physical layer by High-Speed Shared Control Channel simultaneously; And respectively described MAC PDU being added check code according to described control information also carries out respectively sending receiving terminal to by high-speed physical downlink shared channel (HS-PDSCH) simultaneously after the modulation treatment.
6, method as claimed in claim 3 is characterized in that, described step c comprises:
The receiving terminal physical layer is carried out the demodulation checking treatment to corresponding M AC PDU simultaneously according to the control information of each MAC PDU, if described MAC PDU is correct, then it is given receiving terminal MAC layer, and feeds back described MAC PDU correctly reception to transmitting terminal; If described MAC PDU mistake is then fed back described MAC PDU mistake to transmitting terminal.
7, method as claimed in claim 6 is characterized in that, receiving terminal described in the step c comprises to the step that transmitting terminal feeds back each MAC PDU reception condition:
C1, receiving terminal adopt sign indicating number branch mode to feed back the reception condition of described a plurality of MAC PDU to transmitting terminal; Perhaps,
C2, receiving terminal adopt the frequency division mode to feed back the reception condition of each MAC PDU to transmitting terminal; Perhaps,
C3, receiving terminal together feed back to transmitting terminal with the information of each MAC PDU reception condition and sign respective process number.
8, method as claimed in claim 7 is characterized in that, described step c1 specifically comprises:
The receiving terminal physical layer is determined a code word according to the orthogonal code and the pre-defined algorithm of each MAC PDU process number correspondence, then this code word is modulated into a signal and sends to transmitting terminal as feedback result; And described steps d specifically comprises:
Transmitting terminal is determined the reception condition of each MACPDU after described signal is demodulated to code word again according to described pre-defined algorithm, and carries out data re-transmission according to the reception condition of each MAC PDU and handle.
9, method as claimed in claim 7 is characterized in that, described step c2 specifically comprises:
The receiving terminal physical layer with the reception condition of each MAC PDU by sending to transmitting terminal with the corresponding subband of the process number of this MAC PDU; And described steps d specifically comprises:
Transmitting terminal is determined the reception condition of each data according to the corresponding relation of subband and process number, and carries out data re-transmission according to the reception condition of each MAC PDU and handle.
10, a kind of data sending device is characterized in that, this device comprises:
Data transmission blocks is used for simultaneously a plurality of data cells being sent to receiving terminal;
Data feedback result processing module is used for the feedback result about each data cell of receiving terminal is carried out demodulation process and result is notified to described data transmission blocks.
11, device as claimed in claim 10 is characterized in that, described data transmission blocks comprises:
Send data and determine submodule, be arranged at the MAC layer, be used for definite a plurality of MACPDU data that will transmit, and be that each MAC PDU data is selected corresponding control information; Give data transmission submodule with described a plurality of MAC PDU and corresponding control information then;
Data send submodule, are arranged at physical layer, are used for sending described control information to the receiving terminal physical layer simultaneously, and respectively described MAC PDU are added check code according to described control information and also carry out respectively sending receiving terminal simultaneously to after the modulation treatment.
12, a kind of data sink is characterized in that, this device comprises:
Data reception module is arranged at physical layer, is used for simultaneously each data cell that receives being carried out the demodulation verification and receives, and feed back the reception condition of each data cell to transmitting terminal.
13, device as claimed in claim 12 is characterized in that, described data reception module comprises:
Demodulation checking treatment submodule is used for simultaneously its corresponding MAC PDU being carried out after the demodulation checking treatment result being notified to data feedback submodule according to the control information of each MAC PDU, and gives receiving terminal MAC layer with correct MAC PDU;
Data feedbacks submodule, be used for when the demodulation check results be described MAC PDU when correct, feed back described MAC PDU correctly reception to transmitting terminal; When the demodulation check results is described MAC PDU mistake, then feed back described MAC PDU mistake to transmitting terminal.
14, a kind of data transmission system is characterized in that, this system comprises:
Data transmission blocks is arranged at transmitting terminal, is used for simultaneously a plurality of data cells being sent to receiving terminal;
Data reception module is arranged at receiving terminal, is used for simultaneously each data cell being carried out the demodulation verification and receives, and feed back the reception condition of each data cell to transmitting terminal;
Data feedback result processing module is arranged at transmitting terminal, is used for the Data Receiving feedback result of receiving terminal is carried out demodulation process and result is notified to described data transmission blocks.
15, system as claimed in claim 14 is characterized in that, described data transmission blocks comprises:
Send data and determine submodule, be arranged at transmitting terminal MAC layer, be used for definite a plurality of MAC PDU data that will transmit, and be that each MAC PDU data is selected corresponding control information; Give data transmission submodule with described a plurality of MAC PDU and corresponding control information then;
Data send submodule, are arranged at the transmitting terminal physical layer, are used for sending described control information to receiving terminal simultaneously, and respectively described MAC PDU are added check code according to described control information and also carry out respectively sending receiving terminal simultaneously to after the modulation treatment.
16, system as claimed in claim 14 is characterized in that, described data reception module comprises:
Demodulation checking treatment submodule, be arranged at the receiving terminal physical layer, be used for simultaneously its corresponding MAC PDU being carried out after the demodulation checking treatment result being notified to data feedback submodule, and give receiving terminal MAC layer correct MAC PDU according to the control information of each MAC PDU;
Data feedbacks submodule is arranged at the receiving terminal physical layer, be used for when described demodulation check results be described MAC PDU when correct, feed back described MAC PDU correctly reception to transmitting terminal; When described demodulation check results is described MAC PDU mistake, then feed back described MAC PDU mistake to transmitting terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610008772 CN101018108A (en) | 2006-02-10 | 2006-02-10 | The data transmission method and system and data transmission and receiving device |
| PCT/CN2007/000487 WO2007090357A1 (en) | 2006-02-10 | 2007-02-12 | A method, device and system for hybrid automatic repeat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610008772 CN101018108A (en) | 2006-02-10 | 2006-02-10 | The data transmission method and system and data transmission and receiving device |
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| CN101018108A true CN101018108A (en) | 2007-08-15 |
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| CN 200610008772 Pending CN101018108A (en) | 2006-02-10 | 2006-02-10 | The data transmission method and system and data transmission and receiving device |
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| CN101667900A (en) * | 2008-09-02 | 2010-03-10 | 中兴通讯股份有限公司 | Method for feeding back HARQ |
| CN103973414A (en) * | 2014-04-29 | 2014-08-06 | 华为技术有限公司 | Data transmission method and device |
| CN106100792A (en) * | 2016-06-17 | 2016-11-09 | 广州海格通信集团股份有限公司 | A kind of anti-interference data transmission method of shortwave |
| CN106162614A (en) * | 2015-04-24 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of feedback method and device |
| CN106301491A (en) * | 2015-05-18 | 2017-01-04 | 北京富华胜科技中心 | A kind of data transmission method based on multiple-input and multiple-output |
| CN107257270A (en) * | 2017-05-31 | 2017-10-17 | 张超 | Data transmission method and system based on hybrid automatic repeat-request |
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| CN101667900A (en) * | 2008-09-02 | 2010-03-10 | 中兴通讯股份有限公司 | Method for feeding back HARQ |
| CN101667900B (en) * | 2008-09-02 | 2014-11-05 | 中兴通讯股份有限公司 | Method for feeding back HARQ |
| CN103973414A (en) * | 2014-04-29 | 2014-08-06 | 华为技术有限公司 | Data transmission method and device |
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| CN106162614A (en) * | 2015-04-24 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of feedback method and device |
| CN106301491A (en) * | 2015-05-18 | 2017-01-04 | 北京富华胜科技中心 | A kind of data transmission method based on multiple-input and multiple-output |
| CN107277923B (en) * | 2016-04-01 | 2020-01-14 | 华硕电脑股份有限公司 | Method and user equipment for improving transmission using configured resources in wireless communication system |
| CN107277923A (en) * | 2016-04-01 | 2017-10-20 | 华硕电脑股份有限公司 | Improve the method and device of the transmission using configuration resource in wireless communication system |
| CN106100792A (en) * | 2016-06-17 | 2016-11-09 | 广州海格通信集团股份有限公司 | A kind of anti-interference data transmission method of shortwave |
| WO2018032491A1 (en) * | 2016-08-19 | 2018-02-22 | Huizhou Tcl Mobile Communication Co., Ltd | Methods, base stations, and user equipment for reliable video streaming transmission |
| CN108632885A (en) * | 2017-03-21 | 2018-10-09 | 华为技术有限公司 | Method, terminal device and the network equipment that buffer status report is sent |
| CN108632885B (en) * | 2017-03-21 | 2021-02-12 | 华为技术有限公司 | Method for sending buffer status report, terminal equipment and network equipment |
| US11122601B2 (en) | 2017-03-21 | 2021-09-14 | Huawei Technologies Co., Ltd. | Buffer status report sending method, terminal device, and network device |
| CN107257270A (en) * | 2017-05-31 | 2017-10-17 | 张超 | Data transmission method and system based on hybrid automatic repeat-request |
| CN110830154A (en) * | 2018-08-08 | 2020-02-21 | 北京松果电子有限公司 | Image transmission method and device |
| CN110830154B (en) * | 2018-08-08 | 2022-06-24 | 北京小米松果电子有限公司 | Image transmission method and device |
| CN114270782A (en) * | 2019-08-16 | 2022-04-01 | 瑞典爱立信有限公司 | Method and entity for transmitting multiple MAC addresses |
| CN114270782B (en) * | 2019-08-16 | 2024-04-02 | 瑞典爱立信有限公司 | Method and entity for transmitting multiple MAC addresses |
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