CN102301631B - Method and system for controlling the data repeat - Google Patents
Method and system for controlling the data repeat Download PDFInfo
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- CN102301631B CN102301631B CN200980155656.8A CN200980155656A CN102301631B CN 102301631 B CN102301631 B CN 102301631B CN 200980155656 A CN200980155656 A CN 200980155656A CN 102301631 B CN102301631 B CN 102301631B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0025—Transmission of mode-switching indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
Abstract
A scheme for controlling the data repeat is provided. In the case of HARQ-ACK spatial bundling, for a plurality of data units transmitted by a mobile terminal using the spatial multiplexing mode, the bit number indicated by the repeat feedback is not changed. By sending a repeat feedback indicator, a precoding matrix indicator and a rank indicator using the network equipment, the mobile terminal only repeats the data unit which is not decoded correctly by the network equipment according to the information included in said three indicators. By using the scheme, the success ratio of the data unit repeating is increased and the use efficiency of system resource is improved effectively, thereby, the system performance could be improved.
Description
Technical field
The present invention relates to Retransmission control, relate in particular to the Retransmission control that adopts a plurality of data of spatial multiplexing mode transmission for mobile terminal.
Background technology
In the further evolution version LTE-advanced system of the Long Term Evolution of 3GPP, a user, in a subframe of each up composition carrier frequency (component carrier), can use at most two transmission blocks (transport block) or code word (codeword).Each transmission block is by being used independently modulation system and encryption algorithm can obtain a layer interference cancellation gain.
In the meeting of 3GPP the Technology of Wireless Access Networks the first working group, determined to use time domain layer displacement (layer shifting) or do not used time domain layer displacement.If use time domain layer displacement, all data blocks in a subframe for a user, in order to reduce the shared physical hybrid automatic repeat request indicator channel of each user (PHICH) resource, do not reduce power system capacity, base station only sends a mixed automatic retransfer request (HARQ) feedback.If all data blocks that user sends in a subframe is all correctly decoded by base station, (ACK) replied in the confirmation that base station sends 1 bit, and mobile terminal does not need re-transmitting data block.Otherwise if there is any one not to be correctly decoded by base station in all data blocks, base station sends the negative response (NACK) of 1 bit, mobile terminal need to retransmit all data blocks.The retransmission feedback of 1 bit of this use indicates the mode of the receptivity of a plurality of data blocks of spatial reuse to be also called HARQ-ACK space binding (spatial bundling).
If two data blocks that mobile terminal sends can both be correctly decoded by base station, use the binding of HARQ-ACK space can improve the throughput of system.If but only have one can not be correctly decoded by base station in two data blocks, because which data block the binding of HARQ-ACK space can not indicate, be not correctly decoded, the data block that another one has been correctly decoded also needs to retransmit together with the data block not being correctly decoded.Retransmit the data block be correctly received and can waste system resource, thereby reduce the performance of system, as throughput etc.In addition, retransmit the data block that also can really need to have been retransmitted another one by the correct data block receiving in base station and produce interference, reduced probability of successful retransmission, systematic function is caused to negative effect.
Summary of the invention
The in the situation that of binding in HARQ-ACK space, in two data blocks that mobile terminal adopts spatial multiplexing mode to send, there is one by base station, to be correctly decoded, while having one not to be correctly decoded by base station, if can allow mobile terminal distinguish the data block that is correctly decoded and is not correctly decoded, mobile terminal just can only retransmit the data block not being correctly decoded, thereby improves systematic function.
In order better to solve above-mentioned considering, the invention provides a kind of for controlling the technical scheme of data re-transmission, the in the situation that of binding in HARQ-ACK space, a plurality of data cells that adopt spatial multiplexing mode to send for a mobile terminal, do not change the bit number of retransmission feedback indication, by the network equipment, sending a retransmission feedback indication, a pre-coding matrix indication and an order indicates, allow mobile terminal according to the information comprising in above-mentioned three indications, only retransmit the data cell not being correctly decoded by the network equipment.
According to a first aspect of the invention, provide a kind of in a network equipment of mobile communication system for sending the method for retransmission instructions, the method comprises the following steps: receive a plurality of data cells that adopt spatial multiplexing mode to send by a mobile terminal; According to the receptivity index of each data cell in described a plurality of data cells, determine the data cell that needs re-transmission, what the described data cell that need to retransmit was described a plurality of data cells is some or all of; And send a retransmission feedback indication, a pre-coding matrix indication and an order and indicate to described mobile terminal, by this mobile terminal of information notification comprising in described three indications, only retransmit the data cell of described needs re-transmission.
According to a second aspect of the invention, provide a kind of in a mobile terminal of mobile communication system the method for data retransmission, the method comprises the following steps: receive the retransmission feedback indication being sent by a network equipment, a pre-coding matrix indication and an order and indicate, a plurality of data cells that described three indications adopt spatial multiplexing mode to send by this network equipment according to the described mobile terminal receiving are set; And according to described three information that indication comprises, determine the data cell that needs re-transmission, what the described data cell that need to retransmit was described a plurality of data cells is some or all of.
By technical scheme of the present invention, solved the problem that can not effectively realize re-transmission in the situation that of binding in HARQ-ACK space.The total data unit that the data cell that need to retransmit has no longer just sent, is not needed to retransmit by the correct data cell receiving in base station, thereby has reduced the suffered interference of data cell that need to retransmit, and has improved the success rate retransmitting.In addition, because some data cell of meeting does not need to retransmit, save corresponding transmitting power, thereby improved the capacity of system.
According to a third aspect of the present invention, provide a kind of in a network equipment of mobile communication system for sending the retransmission instructions dispensing device of retransmission instructions, this device comprises: a first receiving device, and it is for receiving a plurality of data cells that adopt spatial multiplexing mode to send by a mobile terminal; One first retransmits determining device, and it,, for according to the receptivity index of described a plurality of each data cells of data cell, determines the data cell that needs re-transmission, and what the described data cell that need to retransmit was described a plurality of data cells is some or all of; And first dispensing device, it is indicated to described mobile terminal for sending a retransmission feedback indication, a pre-coding matrix indication and an order, and this mobile terminal of information notification comprising by described three indications only retransmits the data cell that described needs retransmit.
According to a fourth aspect of the present invention, provide a kind of in a mobile terminal of mobile communication system the data re-transmission device for data retransmission, this device comprises: second receiving system, it is indicated for receiving the retransmission feedback indication being sent by a network equipment, a pre-coding matrix indication and an order, and a plurality of data cells that described three indications adopt spatial multiplexing mode to send by this network equipment according to the described mobile terminal receiving are set; And one second re-transmission determining device, it,, for according to described three information that indication comprises, determines the data cell that needs re-transmission, what the described data cell that need to retransmit was described a plurality of data cells is some or all of.
Various aspects of the present invention are by the explanation of the specific embodiment by hereinafter and more clear.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, above-mentioned and other feature of the present invention will become more apparent:
Fig. 1 for according to of the present invention a kind of in a network equipment of mobile communication system for sending the schematic flow sheet of the method for retransmission instructions;
Fig. 2 be according to of the present invention a kind of in a mobile terminal of mobile communication system for the schematic flow sheet of the method for data retransmission;
Fig. 3 for according to of the present invention a kind of in a network equipment of mobile communication system for sending the schematic diagram of the retransmission instructions dispensing device of retransmission instructions;
Fig. 4 be according to of the present invention a kind of in a mobile terminal of mobile communication system for the schematic diagram of the data re-transmission device of data retransmission.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The present invention first provide a kind of in a network equipment of mobile communication system for sending the method for retransmission instructions.The network equipment can be base station, radio network controller (RNC) etc., and the equipment of controlling function can be provided.
Fig. 1 for according to of the present invention a kind of in a network equipment of mobile communication system for sending the schematic flow sheet of the method for retransmission instructions.
As shown in Figure 1, the method comprising the steps of S101, a plurality of data cells that reception adopts spatial multiplexing mode to send by a mobile terminal.
Each data cell in the plurality of data cell can be used a plurality of independently coded systems or modulation system.The plurality of data cell can be a plurality of data blocks or a plurality of code word.The plurality of data cell can be respectively sent by a plurality of antennas of mobile terminal, and each data cell also can split into a plurality of parts, and a plurality of antennas by mobile terminal send respectively.
The method also comprises step S102, according to the receptivity index of each data cell in described a plurality of data cells, determines the data cell that needs re-transmission, and what the described data cell that need to retransmit was described a plurality of data cells is some or all of.
Because modulation and the coded system possibility of each data cell are different, the characteristic of channel experiencing is also different, so the receptivity of each data cell also may be different.The network equipment can determine whether certain data cell needs to retransmit according to the check code of receiving data units.When the performance index of the data cell receiving are better than a predetermined performance index thresholding, can think that base station has correctly received this data cell; When the performance index of the data cell receiving are worse than a predetermined performance index thresholding, can think that base station does not correctly receive this data cell.The data cell correctly not received by base station just needs mobile terminal to resend.In some cases, all data cells all need to retransmit, and in some cases, only have partial data unit to need to retransmit, and in some cases, do not need to retransmit any data cell.
The method also comprises step S103, send a retransmission feedback indication, a pre-coding matrix indication and an order and indicate to described mobile terminal, by this mobile terminal of information notification comprising in described three indications, only retransmit the data cell that described needs retransmit.
A plurality of data cells that send for mobile terminal, for each indication of above-mentioned three kinds of indications, base station only sends one and allows the shared indication information of the plurality of data cell, herein, starts introduced HARQ-ACK space binding.Whether retransmission feedback indication can indicate with the ACK/NACK of 1 bit received data cell all by base station, correctly received or have any data cell by base station, correctly not received.Based on a base station and mobile terminal, all approve by the predefined code book of system, pre-coding matrix indication and order indicate the information comprising to be used to refer to the pre-coding matrix that data cell that mobile terminal sends should be used.By above-mentioned three information consolidations of comprising of indication together, rather than only use a retransmission feedback indication, the in the situation that of just can bind in HARQ-ACK space, indicating mobile terminal only retransmits not by the correct data cell of reception in base station.
When the described data cell that need to retransmit is whole described a plurality of data cell, before step S103, also comprise step: described retransmission feedback indication is set as retransmitting, the pre-coding matrix of described pre-coding matrix indication is set as requiring according to systematic function to the pre-coding matrix of required use, and the number that described order indication is set as to the data flow of described a plurality of data cells.
Retransmission feedback indication can be indicated and be needed to retransmit by transmission NACK instruction, and a plurality of data cells that mobile terminal sends are all correctly received by base station.According to systematic function requirement, as received the carrier/interface ratio of signal, existing system throughput situation etc., the network equipment is that mobile terminal selects all to send the precoding that the plurality of data cell should be used.The network equipment is that the precoding that mobile terminal is selected can be identical or different with the precoding of the last transmission of mobile terminal data use.Data flow can define in several ways, and as in LTE-advanced system, data flow is layer.The number of the data flow of a plurality of data cells refers to the number of all data flow that a plurality of data cells comprise, rather than only refers to a data cell.The number of the data flow of data cell can be determined according to predefined criterion by mobile terminal or the network equipment.Because total data unit all needs to retransmit, thus to the configuration of described three indications, without differentiation, be now for concrete which or which data cell, but a plurality of data cells are done as a whole, according to the performance of system requirements, be configured.
When the described data cell need retransmitting is when to be described a plurality of data cells a part of, before step S103, also comprise step: described retransmission feedback is designated as to re-transmission, the pre-coding matrix of described pre-coding matrix indication is set as having to the pre-coding matrix of selectivity characteristic, the number that this matrix column number is the data flow of this data cell that need to retransmit, and the number that described order indication is set as to the data flow of this data cell that need to retransmit.
Retransmission feedback indication can be indicated and be needed to retransmit by transmission NACK instruction, and a plurality of data cells that mobile terminal sends are all correctly received by base station.The pre-coding matrix with selectivity characteristic refers to that the numerical value in this pre-coding matrix is 0 or 1.Because the numerical value in pre-coding matrix is 0 or 1, so this pre-coding matrix except can be for informing the pre-coding matrix that mobile terminal should use, can also represent that mobile terminal should retransmit which or which data cell with 0 and 1.Such as, 1 represents to need to retransmit, and 0 represents not need to retransmit.Mobile communication network device can pre-define or dynamically arrange transmitting antenna that a plurality of data cells are used and the layer shift mode (layer shifting pattern) of a plurality of data cells.The layer shift mode of the transmitting antenna using according to a plurality of data cells or a plurality of data cells, a base station selected pre-coding matrix with selectivity characteristic is which or which data cell in a plurality of data cells with what inform that mobile terminal need to retransmit.The number of the data flow of the data cell that need to retransmit refers to the number of all data flow that all data cells that need to retransmit comprise, rather than only refers to a data cell.The number of the data flow of data cell can be determined according to predefined criterion by mobile terminal or the network equipment.When there being partial data unit correctly to be received by base station, while having partial data unit correctly not received by base station, if the retransmission feedback that base station sends is for retransmitting, and order indicates indicated order to be less than the order that a plurality of data cells that mobile terminal sends are used, and can inform that its data cell sending of mobile terminal is not correctly received by base station.Base station can be further by only have 0 and the pre-coding matrix of 1 two kind of numerical value inform mobile terminal specifically which or which data cell need to retransmit.
Corresponding to above-mentioned in a network equipment of mobile communication system for sending the method for retransmission instructions, the present invention also provide a kind of in a mobile terminal of mobile communication system the method for data retransmission.
Fig. 2 be according to of the present invention a kind of in a mobile terminal of mobile communication system for the schematic flow sheet of the method for data retransmission.
As shown in Figure 2, the method comprising the steps of S201, a retransmission feedback indication, a pre-coding matrix indication and an order that reception is sent by a network equipment are indicated, and a plurality of data cells that described three indications adopt spatial multiplexing mode to send by this network equipment according to the described mobile terminal receiving are set.
Mobile terminal, after a plurality of data cells that adopt spatial multiplexing mode to send, need to be determined according to the feedback of base station next step operation, retransmits and still sends new data.
The method also comprises step S202, according to described three information that indication comprises, determines the data cell that needs re-transmission, and what the described data cell that need to retransmit was described a plurality of data cells is some or all of.
In existing technical scheme, mobile terminal only need to indicate to judge whether to need data retransmission according to a retransmission feedback.According to scheme provided by the present invention, mobile terminal need to be according to described three information that indication comprises, determine retransmission scheme, only retransmit not by the correct data cell receiving in base station, as long as rather than simply have data cell by base station, correctly not received, just retransmit all data cells.
When described retransmission feedback is designated as, retransmits and when described order is designated as the number of data flow of described a plurality of data cells, step S202 after, also comprise step: send whole described a plurality of data cells.
Because having received, mobile terminal retransmits indication, and the content of the corresponding order indication of data of the content of order indication and mobile terminal transmission last time is identical, mobile terminal can determine that a plurality of data cells that sent last time are not all correctly received by base station, need to all resend.
When described retransmission feedback is designated as re-transmission, the pre-coding matrix of described pre-coding matrix indication is the matrix with selectivity characteristic, and the number of described order indication is while being less than the number of data flow of described a plurality of data cells: step S202 also comprises sub-step, according to the pre-coding matrix of described pre-coding matrix indication, determine the described data cell that retransmits of needing; After step S202, also comprise step, send the described data cell that needs re-transmission.
Because having received, mobile terminal retransmits indication, and the content of order indication is less than the content of the corresponding order indication of data of mobile terminal transmission last time, mobile terminal can determine that a plurality of data cells that sent last time have part correctly to be received by base station, there is part by base station, not retransmitted, need to retransmit partial data unit.On the layer shift mode basis of the transmitting antenna using in a plurality of data cells or a plurality of data cells, mobile terminal is determined and specifically need to be retransmitted which or which data cell according to the pre-coding matrix with selectivity characteristic, such as, in matrix, 1 retransmits corresponding to needs, and 0 retransmits corresponding to not needing.
When described retransmission feedback is designated as re-transmission, the pre-coding matrix of described pre-coding matrix indication is not for having the matrix of selectivity characteristic, and the number of described order indication is while being less than the number of data flow of described a plurality of data cells, described to need the number of the data cell that retransmits be zero.
Because having received, mobile terminal retransmits indication, and the content of order indication is less than the content of the corresponding order indication of data of mobile terminal transmission last time, mobile terminal should also can be read an indication with selectivity characteristic pre-coding matrix according to pre-coding matrix indication and order indication, but mobile terminal, but according to indication, has been read a pre-coding matrix without selectivity characteristic from code book.In this case, mobile terminal can determine that mistake has occurred in the transmission of retransmission feedback indication, correct retransmission feedback indication should be not need to retransmit, so mobile terminal does not retransmit the data that sent, but waits for that new indication is to carry out next step other operations.
When only having a data cell to need to retransmit, and this data cell is after re-transmission, while still needing to retransmit, owing to now there not being the problem of HARQ-ACK space binding, Retransmission control mode just adopts existing Retransmission control mode, according to performance requirements, carries out the selection of pre-coding matrix.
A mobile terminal of take below in LTE-Adavanced system is done more specific description as example.
In LTE-Adavanced system, a mobile terminal can be used two transmitting antennas to send data, and each mobile terminal, in a subframe of each up composition carrier frequency, can be used at most two data cells, as data block.Base station sends retransmission feedback by the ACK/NACK instruction of 1 bit to mobile terminal, by pre-coding matrix, indicates (PMI) and order indication (RI) to inform the pre-coding matrix of the required use of mobile terminal.According to technical scheme of the present invention, the combined information that base station comprises by ACK/NACK, PMI and tri-indications of RI is informed concrete which data cell that retransmits of mobile terminal needs.
Table 1 is the code book table of two transmitting antennas in LTE-Adavanced system.The number of the number of plies data flow altogether that two data cells comprise.When the number of plies is 1, have 6 kinds of operable pre-coding matrixes; When the number of plies is 2, only has a kind of operable pre-coding matrix.
In table 1LTE-Adavanced system, mobile terminal has the code book table of two transmitting antennas
One has the mobile terminal of two transmitting antennas to adopt the mode of spatial reuse to send two data blocks.Base station receives this two data blocks.
When two data blocks are all correctly received by base station, base station just sends the ACK information of 1 bit to mobile terminal.Mobile terminal is received after ACK, determines that base station all correctly receives two data blocks, just waits for new instruction.
When two data blocks are not all correctly received by base station, base station just sends the nack message of 1 bit to mobile terminal, and informs that with PMI and RI mobile terminal code book index is 0, and the number of plies is 2.Mobile terminal, after receiving NACK, is determined to a rare data cell and by base station, is not correctly received, and then determines that by RI the number of plies is 2, namely needs the number of the data flow that sends identical with the number of the data flow sending last time.Therefore, mobile terminal can be determined and two data cells all need to be retransmitted, and two data cells are resend to base station.
In two data blocks, there is one by base station, correctly to be received, while having one correctly not received by base station, base station just sends the nack message of 1 bit to mobile terminal, and according to which data block specifically needs to retransmit, and with PMI and RI, informs mobile terminal code book index and the number of plies.The layer shift mode of the transmitting antenna using according to two data blocks and two data blocks, a base station selected pre-coding matrix with selectivity characteristic, is which data block in two data blocks with what inform that mobile terminal need to retransmit.The pre-coding matrix in table 1 with selectivity characteristic is that code book index is 4 and 5, the pre-coding matrix that the number of plies is 1.When two data cells are during respectively by 2 transmitting of antenna 1 and antenna, if need the data block retransmitting to be launched by antenna 1, it is 4 and the number of plies pre-coding matrix that is 1 that code book index is just selected in base station
With 1, represent to need to retransmit, 0 represents not need to retransmit; If the data block need retransmitting is launched by antenna 2, it is 5 and the number of plies pre-coding matrix that is 1 that code book index is just selected in base station
With 1, represent to need to retransmit, 0 represents not need to retransmit.
Mobile terminal, after receiving NACK, is determined to a rare data cell and by base station, is not correctly received, and then determines that by RI the number of plies is 1, namely needs the number of the data flow that sends to be less than the number of the data flow sending last time.Therefore, mobile terminal can be determined and only need to retransmit a data cell.Mobile terminal reads the pre-coding matrix in code book according to PMI and RI.When two data cells are during respectively by 2 transmitting of antenna 1 and antenna, if mobile terminal reads, be pre-coding matrix
Just can determine need to retransmit be last time in the data cell of antenna 1 transmitting, mobile terminal just sends to base station by antenna 1 again by the data cell of being launched by antenna 1, if mobile terminal reads, is pre-coding matrix
What just can determine needs re-transmission is the data cell of launching at antenna 2 last time, and mobile terminal just sends to base station by antenna 2 again by the data cell of being launched by antenna 2.
When the data cell being resend by an antenna is correctly received by base station, base station just sends an ACK information to mobile terminal, and mobile terminal is received after ACK information, determines that the data cell of retransmitting is correctly received by base station, just waits for new operational order.
When the data cell being resend by an antenna is not correctly received by base station, the control mode of data re-transmission is identical with the situation that does not have HARQ-ACK space to bind.Base station just sends a nack message to mobile terminal, and according to the requirement of systematic function, as power system capacity, carrier/interface ratio etc., from table 1, the number of plies is 1, in 6 pre-coding matrixes in code index 0 to 5, for mobile terminal is determined corresponding pre-coding matrix.
When mobile terminal adopts the mode of spatial reuse, send after two data cells, received the nack message that base station sends, the number of plies of RI indication is 1, but but from code book, has read a matrix without selectivity characteristic according to PMI and RI, as
Mobile terminal can determine that mistake has occurred ACK/NACK command, and nack message is actually ACK information.Therefore mobile terminal is not done any operation, waits for new instruction.
Corresponding to above-mentioned two kinds of methods, the present invention also provides the device of two kinds of Retransmission controls.
Fig. 3 for according to of the present invention a kind of in a network equipment of mobile communication system for sending the schematic diagram of the retransmission instructions dispensing device 300 of retransmission instructions.
As shown in Figure 3, this retransmission instructions dispensing device 300 comprises: a first receiving device 301, and it is for receiving a plurality of data cells that adopt spatial multiplexing mode to send by a mobile terminal; One first retransmits determining device 302, and it,, for according to the receptivity index of described a plurality of each data cells of data cell, determines the data cell that needs re-transmission, and what the described data cell that need to retransmit was described a plurality of data cells is some or all of; And first dispensing device 303, it is indicated to described mobile terminal for sending a retransmission feedback indication, a pre-coding matrix indication and an order, and this mobile terminal of information notification comprising by described three indications only retransmits the data cell that described needs retransmit.For LTE-advanced system, the number of described a plurality of data cells is two, and the resource that described retransmission feedback indication is used is 1 bit.
When the described data cell that need to retransmit is whole described a plurality of data cell, this retransmission instructions dispensing device 300 also comprises: one first indication setting device, it is for being set as described retransmission feedback indication to retransmit, the pre-coding matrix of described pre-coding matrix indication is set as requiring according to systematic function to the pre-coding matrix of required use, and the number that described order indication is set as to the data flow of described a plurality of data cells.
When the described data cell need retransmitting is when to be described a plurality of data cells a part of, this retransmission instructions dispensing device 300 also comprises: one second indication setting device, it is for being designated as re-transmission by described retransmission feedback, the pre-coding matrix of described pre-coding matrix indication is set as having to the matrix of selectivity characteristic, the number that this matrix column number is the data flow of this data cell that need to retransmit, and the number that described order indication is set as to the data flow of this data cell that need to retransmit.When the number of the described a plurality of data cells number of transmit antennas that is two and described mobile terminal is two, the pre-coding matrix of described pre-coding matrix indication is
Or
Fig. 4 be according to of the present invention a kind of in a mobile terminal of mobile communication system for the schematic diagram of the data re-transmission device 400 of data retransmission.
As shown in Figure 4, this data re-transmission device 400 comprises: second receiving system 401, it is indicated for receiving the retransmission feedback indication being sent by a network equipment, a pre-coding matrix indication and an order, and a plurality of data cells that described three indications adopt spatial multiplexing mode to send by this network equipment according to the described mobile terminal receiving are set; And one second re-transmission determining device 402, it,, for according to described three information that indication comprises, determines the data cell that needs re-transmission, what the described data cell that need to retransmit was described a plurality of data cells is some or all of.For LTE-advanced system, the number of described a plurality of data cells is two, and the resource that described retransmission feedback indication is used is 1 bit.
When being designated as, described retransmission feedback retransmits and when described order is designated as the number of data flow of described a plurality of data cells, this data re-transmission device 400 also comprises: second dispensing device, it is for sending all described a plurality of data cells.
When described retransmission feedback is designated as re-transmission, the pre-coding matrix of described pre-coding matrix indication is the matrix with selectivity characteristic, and the number of described order indication is while being less than the number of data flow of described a plurality of data cells, described the second retransmission arrangement 402 is also for determining the described data cell that retransmits of needing according to the pre-coding matrix of described pre-coding matrix indication; This data re-transmission device 400 also comprises the 3rd dispensing device, and it is for sending the described data cell that needs re-transmission.When the number of described a plurality of data cells is two, the number of transmit antennas of described mobile terminal is two, and the pre-coding matrix of described pre-coding matrix indication is
Or
Time, the described data cell that need to retransmit is a data cell in described two data cells.
When described retransmission feedback is designated as re-transmission, the pre-coding matrix of described pre-coding matrix indication is not for having the matrix of selectivity characteristic, and the number of described order indication is while being less than the number of data flow of described a plurality of data cells, described to need the number of the data cell that retransmits be zero.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.In addition, obviously other unit or step do not got rid of in " comprising " word, and odd number is not got rid of plural number.A plurality of unit of stating in system claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.
Claims (14)
1. the in the situation that of binding in HARQ-ACK space in a network equipment of mobile communication system, for sending a method for retransmission instructions, the method comprises the following steps:
A. receive a plurality of data cells that adopt spatial multiplexing mode to send by a mobile terminal;
B. according to the receptivity index of each data cell in described a plurality of data cells, determine the data cell that needs re-transmission, what the described data cell that need to retransmit was described a plurality of data cells is some or all of; And
C. send a retransmission feedback indication, a pre-coding matrix indication and an order and indicate to described mobile terminal, by this mobile terminal of information notification comprising in described three indications, only retransmit the data cell that described needs retransmit;
Wherein, when the described data cell that need to retransmit is whole described a plurality of data cell, before described step C, also comprise step:
-described retransmission feedback indication is set as retransmitting, the pre-coding matrix of described pre-coding matrix indication is set as requiring according to systematic function to the pre-coding matrix of required use, and the number that described order indication is set as to the data flow of described a plurality of data cells;
Wherein, when the described data cell need retransmitting is when to be described a plurality of data cells a part of, before described step C, also comprise step:
-described retransmission feedback indication is set as retransmitting, the pre-coding matrix of described pre-coding matrix indication is set as having to the pre-coding matrix of selectivity characteristic, the number that this matrix column number is the data flow of this data cell that need to retransmit, and the number that described order indication is set as to the data flow of this data cell that need to retransmit.
2. method according to claim 1, is characterized in that, when the number of the described a plurality of data cells number of transmit antennas that is two and described mobile terminal is two, the pre-coding matrix of described pre-coding matrix indication is
Or
3. method according to claim 1, is characterized in that, the number of described a plurality of data cells is two, and the resource that described retransmission feedback indication is used is 1 bit.
4. the in the situation that of binding in HARQ-ACK space in a mobile terminal of mobile communication system, for a method for data retransmission, the method comprises the following steps:
A. receive the retransmission feedback indication being sent by a network equipment, a pre-coding matrix indication and an order and indicate, a plurality of data cells that described three indications adopt spatial multiplexing mode to send by this network equipment according to the described mobile terminal receiving are set; And
B. according to described three information that indication comprises, determine the data cell that needs re-transmission, what the described data cell that need to retransmit was described a plurality of data cells is some or all of;
Wherein, when described retransmission feedback is designated as, retransmits and when described order is designated as the number of data flow of described a plurality of data cells, after described step b, also comprise step:
-transmission is described a plurality of data cells all;
Wherein, when described retransmission feedback is designated as re-transmission, the pre-coding matrix of described pre-coding matrix indication is the matrix with selectivity characteristic, and the number of described order indication is while being less than the number of data flow of described a plurality of data cells, and described step b also comprises sub-step:
-according to the pre-coding matrix of described pre-coding matrix indication, determine the described data cell that needs re-transmission;
After described step b, also comprise step:
-send the described data cell need retransmitting.
5. method according to claim 4, is characterized in that, when the number of described a plurality of data cells is two, the number of transmit antennas of described mobile terminal is two, and the pre-coding matrix of described pre-coding matrix indication is
Or
Time, the described data cell that need to retransmit is a data cell in described two data cells.
6. method according to claim 4, it is characterized in that, when described retransmission feedback is designated as re-transmission, the pre-coding matrix of described pre-coding matrix indication is not for having the matrix of selectivity characteristic, and the number of described order indication is while being less than the number of data flow of described a plurality of data cells, described to need the number of the data cell that retransmits be zero.
7. method according to claim 4, is characterized in that, the number of described a plurality of data cells is two, and described retransmission feedback is designated as 1 bit.
8. the in the situation that of binding in HARQ-ACK space in a network equipment of mobile communication system, for sending a retransmission instructions dispensing device for retransmission instructions, this device comprises:
A first receiving device, it is for receiving a plurality of data cells that adopt spatial multiplexing mode to send by a mobile terminal;
One first retransmits determining device, and it,, for according to the receptivity index of described a plurality of each data cells of data cell, determines the data cell that needs re-transmission, and what the described data cell that need to retransmit was described a plurality of data cells is some or all of; And
First dispensing device, it is indicated to described mobile terminal for sending a retransmission feedback indication, a pre-coding matrix indication and an order, and this mobile terminal of information notification comprising by described three indications only retransmits the data cell that described needs retransmit;
Wherein, when the described data cell that need to retransmit is whole described a plurality of data cell, this device also comprises:
One first indication setting device, it is for being set as described retransmission feedback indication to retransmit, the pre-coding matrix of described pre-coding matrix indication is set as requiring according to systematic function to the pre-coding matrix of required use, and the number that described order indication is set as to the data flow of described a plurality of data cells;
Wherein, when the described data cell need retransmitting is when to be described a plurality of data cells a part of, this device also comprises:
One second indication setting device, it is for being set as described retransmission feedback indication to retransmit, the pre-coding matrix of described pre-coding matrix indication is set as having to the matrix of selectivity characteristic, the number that this matrix column number is the data flow of this data cell that need to retransmit, and the number that described order indication is set as to the data flow of this data cell that need to retransmit.
9. device according to claim 8, is characterized in that, when the number of the described a plurality of data cells number of transmit antennas that is two and described mobile terminal is two, the pre-coding matrix of described pre-coding matrix indication is
Or
10. device according to claim 8, is characterized in that, the number of described a plurality of data cells is two, and the resource that described retransmission feedback indication is used is 1 bit.
11. 1 kinds bind in HARQ-ACK space in a mobile terminal of mobile communication system in the situation that for the data re-transmission device of data retransmission, this device comprises:
Second receiving system, it is indicated for receiving the retransmission feedback indication being sent by a network equipment, a pre-coding matrix indication and an order, and a plurality of data cells that described three indications adopt spatial multiplexing mode to send by this network equipment according to the described mobile terminal receiving are set; And
One second re-transmission determining device, it,, for according to described three information that indication comprises, determines the data cell that needs re-transmission, what the described data cell that need to retransmit was described a plurality of data cells is some or all of;
Wherein, when being designated as, described retransmission feedback retransmits and when described order is designated as the number of data flow of described a plurality of data cells, this device also comprises:
Second dispensing device, it is for sending all described a plurality of data cells;
Wherein, when described retransmission feedback is designated as re-transmission, the pre-coding matrix of described pre-coding matrix indication is the matrix with selectivity characteristic, and the number of described order indication is while being less than the number of data flow of described a plurality of data cells, described second retransmits determining device also for determines the described data cell that retransmits of needing according to the pre-coding matrix of described pre-coding matrix indication;
This device also comprises the 3rd dispensing device, and it is for sending the described data cell that needs re-transmission.
12. devices according to claim 11, is characterized in that, when the number of described a plurality of data cells is two, the number of transmit antennas of described mobile terminal is two, and the pre-coding matrix of described pre-coding matrix indication is
Or
Time, the described data cell that need to retransmit is a data cell in described two data cells.
13. devices according to claim 11, it is characterized in that, when described retransmission feedback is designated as re-transmission, the pre-coding matrix of described pre-coding matrix indication is not for having the matrix of selectivity characteristic, and the number of described order indication is while being less than the number of data flow of described a plurality of data cells, described to need the number of the data cell that retransmits be zero.
14. devices according to claim 11, is characterized in that, the number of described a plurality of data cells is the number of transmit antennas of two and described mobile terminal while being two, and described retransmission feedback is designated as 1 bit.
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| PCT/CN2009/000462 WO2010124418A1 (en) | 2009-04-28 | 2009-04-28 | Method and system for controlling the data repeat |
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| CN104396172B (en) * | 2013-06-27 | 2018-05-29 | 华为技术有限公司 | Automatic retransmission processing method, sending ending equipment and receiving device |
| CN106230562B (en) * | 2015-07-31 | 2019-11-15 | 北京智谷睿拓技术服务有限公司 | Data repeating method, data reconstruction method and its device |
| CN108631948B (en) * | 2017-03-21 | 2021-08-20 | 华为技术有限公司 | Data retransmission method, communication equipment and data retransmission system |
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| CN101374038A (en) * | 2007-08-20 | 2009-02-25 | 中兴通讯股份有限公司 | Signal retransmission method for OFDM system based on HARQ technology |
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