CN102347823B - Merging feedback and instruction method, device and system for answer information - Google Patents
Merging feedback and instruction method, device and system for answer information Download PDFInfo
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Abstract
The invention discloses a merging feedback and instruction method, a device and a system for answer information, which are used for merging and feeding back the answer information on the basis of a feedback window in a long term evolution-advanced (LTE-A) system. The merging feedback method comprises the following steps that: user equipment (UE) merges and feeds back data receiving conditions in the feedback window to a base station side in a mode of not feeding back answer information but feeding back ACK/NACK information according to the preset configuration information so that the base station side can obtain the data receiving state of the UE in time, in addition, when the data receiving is abnormal, the corresponding processing is carried out through adopting the accurate strategy in time, so the fault tolerance capability of the system is improved, and the performance and the service quality of the system are also improved. The invention simultaneously provides a merging feedback device and a system for the answer information and provides a merging feedback and instruction method of the answer information, and a corresponding device and a system.
Description
Technical field
The present invention relates to the communications field, particularly a kind of merging feedback of response message and indicating means thereof, Apparatus and system.
Background technology
In advanced Long Term Evolution (Long Term Evolution-Advanced, LTE-Advanced) system, be called for short LTE-A system, for supporting the system bandwidth wider than LTE system, as 100MHz, normally adopt following two kinds of spectrum allocation may modes:
To adopt the mode of single-frequency spectral directly to distribute a frequency spectrum for 100M bandwidth, specifically as shown in Figure 1.
Another kind is the mode that adopts spectrum aggregating, becomes 100M bandwidth for system the spectrum aggregating of distributing to existing system, specifically as shown in Figure 2.
As shown in Figure 2, while adopting spectrum aggregating mode, in LTE-A system, up-downgoing carrier wave can asymmetricly configure, and user terminal can take N >=1 carrier wave and carries out downlink transfer, takies M >=1 carrier wave and carries out uplink.In the time that the data on each descending carrier are independently carried out coding and decoding, the packet on each carrier wave is carried out respectively mixed self-adapting (HARQ) repeat requests by user terminal, the i.e. correct response/non-correct response (ACK/NACK information) of feedback, therefore, user terminal can feed back multiple ACK/NACK information to base station side in a sub-frame of uplink simultaneously.
At present, in the agreement Rel-8 of the LTE system that standardization effort has completed substantially, formulate following scheme: for Frequency Division Duplexing (FDD) (Frequency Division Duplexing, FDD) system and time division duplex (TimeDivision Duplexing, TDD) the each work carrier wave in system, downlink signaling, downlink data, up signaling and upstream data are defined respectively, and transmission relation each other, wherein, as shown in Figure 3, TDD system schematic as shown in Figure 4 for FDD system schematic.In the time having opened HARQ function in downlink transfer, user terminal completes after demodulation to the data on descending sub frame n '=n-5, decoding, by feed back data on this descending sub frame to base station side on sub-frame of uplink n, whether to need the signaling retransmitting (be ACK/NACK, wherein ACK represents with ' 1 ', now data correctly receive, and do not retransmit; NACK represents with ' 0 ', and now data decoding mistake needs to retransmit).For FDD system, k=4.For TDD system, k ∈ K, the set value of K and the uplink-downlink configuration of system and concrete subframe are numbered relevant, as shown in table 1, and for example, uplink-downlink configuration is 3 o'clock, is numbered 2 subframe for subframe, and its K value can be chosen for 7,6,11.
Table 1
In above-mentioned table 1, K can have multiple values, is designated as K:{k
0, k
1... k
m-1; when multiple radio frames orders are arranged; even in radio frames a, last subframe is k; in radio frames a+1, first subframe is k+1; table 1 has provided the value condition of the corresponding K of each sub-frame of uplink as an example of a radio frames example, wherein 0 descending sub frame representing in last radio frames of n-k <.
In LTE-A system, preliminary definite scheme feeding back ACK/nack message of formulating in Rel-8 of continuing to use.And LTE-A system can support at most 5 carrier waves to carry out polymerization at present, hereinafter, need in same sub-frame of uplink, carry out multiple descending carriers and the descending sub frame of ACK/NACK information feedback, referred to as " feedback window ".For FDD system, the big or small L=N of feedback window, N is the descending carrier quantity of user terminal polymerization.For TDD system, the big or small L=N × M of feedback window, wherein N is the descending carrier quantity of user terminal polymerization, M is the descending sub frame quantity of feeding back at same sub-frame of uplink, for different uplink-downlink configuration and sub-frame of uplink numbering, the value difference of M, the i.e. quantity of K in each hurdle in table 1.
In LTE-A system, while carrying out many code words (code word) transmission, by usage space multiplex technique, on same physical resource, multiplexing transmission belongs to same user's multiplex data stream.In a subframe, the data in different data flow will independently be encoded, and become code word.Now, the ACK/NACK information of feedback will produce based on code word, to obtaining independently ACK/NACK information of 1bit after each codeword decoding.In the system of employing carrier aggregation technology, in a sub-frame of uplink, need the ACK/NACK information of feedback, come from the multiple descending sub frames in multiple descending carriers, a sub-frame of uplink need to feed back at most 2*M*C ACK/NACK information, wherein M is the descending sub frame quantity that in table 1, each sub-frame of uplink is corresponding, and C is polymerization carrier number (supposing that each carrier wave uplink-downlink configuration is identical).
For not limited users terminal (hereinafter referred to as UE) of power, in order to ensure the efficiency of system descending transmission, UE should feed back respectively many bit ACK/nack messages for the descending carrier of actual schedule in feedback window; For the UE of power limited, for ensureing the covering of up channel, after needing many bit ACK/nack message to merge, feed back again.But, at present about LTE-A systematic research, also do not formulate relevant scheme for how carrying out ACK/NACK information merging feedback.
summary of the invention
The embodiment of the present invention provides a kind of merging feedback of response message and indicating means thereof, Apparatus and system, in order to realize the merging feedback of response message based on feedback window in LTE-A system.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A merging feedback indication method for response message in LTE-A system, comprising:
The down dispatch information of user terminal is determined in base station, carries downlink data packet number DAI in this down dispatch information;
Base station sends described down dispatch information to user terminal, and the descending carrier number that is scheduled that indicating user terminal arranges based on the described DAI of correspondence merges feedback response message to base station side;
Wherein, if system adopts FDD technology, when the down dispatch information of DAI is carried to user terminal transmission in described base station, base station is carried respectively corresponding DAI and is mail to user terminal in the each descending carrier being scheduled; Corresponding DAI arranges while being scheduled accordingly descending carrier number, if DAI comprises 1bit data, the descending carrier that system can be dispatched is divided at least two groups, the descending carrier number comprising in every group is not more than 2, and for each group of descending carrier, set two kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes; If DAI comprises 2bits data, the descending carrier that system can be dispatched is divided at least two groups, the descending carrier number comprising in every group is not more than 4, and for each group of descending carrier, sets four kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes.
A merging feedback indication method for response message in LTE-A system, comprising:
The down dispatch information of user terminal is determined in base station, carries downlink data packet number DAI in this down dispatch information;
Base station sends described down dispatch information to user terminal, and the descending carrier number that is scheduled that indicating user terminal arranges based on the described DAI of correspondence merges feedback response message to base station side;
Wherein, if system adopts TDD technology, when the down dispatch information of DAI is carried to user terminal transmission in described base station, in the descending carrier that is scheduled of base station in each wireless sub-frame, carry respectively corresponding DAI and mail to user terminal; Corresponding DAI arranges while being scheduled accordingly descending carrier number, DAI comprises 2bits data, in four kinds of values that characterize at DAI, set the respectively corresponding b1 kind descending carrier scheduling of any a1 value number, and set the respectively corresponding b1-1 kind descending carrier scheduling of other 4-a1 values number; Wherein, a1=(T-1) mod4+1, b1=ceil (T/4), T is the maximum polymerization carrier number that system can be supported, and mod is remainder operation, and ceil is capping operation.
A merging feedback method for response message in LTE-A system, comprising:
User terminal receives the down dispatch information that carries downlink data packet number DAI that base station adopts above-mentioned any one method to send, and determines based on described DAI the descending carrier number that is scheduled;
User terminal receives data by the each descending carrier being scheduled, and judges in feedback window, whether to lose descending carrier;
If user terminal is determined in feedback window and is lost descending carrier according to judged result, not to base station feedback response message;
If user terminal is determined and is not lost descending carrier in feedback window according to judged result, whether further judge in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if, to base station feedback nack message, otherwise, according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.
The merging of a response message feedback indicating device in LTE-A system, comprising:
Determining unit, for determining the down dispatch information of user terminal, carries downlink data packet number DAI in this down dispatch information;
Communication unit, for send described down dispatch information to user terminal, the descending carrier number that is scheduled that indicating user terminal arranges based on the described DAI of correspondence, merges feedback response message to base station side; Wherein, if system adopts FDD technology, when described communication unit carries the down dispatch information of DAI to user terminal transmission, in the each descending carrier being scheduled, carry respectively corresponding DAI;
The second setting unit, for corresponding DAI, the descending carrier number that is scheduled is accordingly set, wherein, if DAI comprises 1bit data, the descending carrier that described the second setting unit can be dispatched system is divided at least two groups, the descending carrier number comprising in every group is not more than 2, and for each group of descending carrier, sets two kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes; If DAI comprises 2bits data, the descending carrier that described the second setting unit can be dispatched system is divided at least two groups, the descending carrier number comprising in every group is not more than 4, and for each group of descending carrier, sets four kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes.
The merging of a response message feedback indicating device in LTE-A system, comprising:
Determining unit, for determining the down dispatch information of user terminal, carries downlink data packet number DAI in this down dispatch information;
Communication unit, for send described down dispatch information to user terminal, the descending carrier number that is scheduled that indicating user terminal arranges based on the described DAI of correspondence, merges feedback response message to base station side; Wherein, if system adopts TDD technology, when described communication unit carries the down dispatch information of DAI to user terminal transmission, in the descending carrier that is scheduled in each wireless sub-frame, carry respectively corresponding DAI;
The first setting unit, for corresponding DAI, the descending carrier number that is scheduled is accordingly set, wherein, DAI comprises 2bits data, in four kinds of values that characterize at DAI, set the respectively corresponding b1 kind descending carrier scheduling of any a1 value number, and set the respectively corresponding b1-1 kind descending carrier scheduling of other 4-a1 values number; Wherein, a1=(T-1) mod4+1, b1=ceil (T/4), T is the maximum polymerization carrier number that system can be supported, and mod is remainder operation, and ceil is capping operation.
A merging feedback device for response message in LTE-A system, comprising:
Communication unit, the down dispatch information that carries downlink data packet number DAI sending for receiving above-mentioned any one device, and determine based on described DAI the descending carrier number that is scheduled;
Processing unit, receives data for the each descending carrier by being scheduled, and judges in feedback window, whether to lose descending carrier;
Feedback unit, in the time determining that according to judged result feedback window is lost descending carrier, not to base station feedback response message; And do not lose descending carrier in determining feedback window according to judged result time, whether further judge in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if, to base station feedback nack message, otherwise, according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.
In the embodiment of the present invention, in LTE-A system, UE receives after the DAI that base station sends, and determines the descending carrier number that is scheduled, and receives data by the each descending carrier being scheduled, and judge in feedback window, whether to lose descending carrier according to DAI; If determine in feedback window and lose descending carrier according to judged result, not to base station feedback response message; If determine and do not lose descending carrier in feedback window according to judged result, whether further judge in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if, to base station feedback nack message, otherwise, according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.Like this, UE is not just by feeding back the mode of response message, feeding back ACK/nack message, data receiver situation in feedback window is merged and feeds back to base station side, make base station side can know in time the data receiving state of UE, and occur when abnormal at data receiver, adopt in time strategy accurately to carry out respective handling, thereby improved to a great extent system survivability, also promoted performance and the service quality of system.
brief description of the drawings
Fig. 1 is the prior art spectrum systems schematic diagram that places an order;
Fig. 2 is frequency spectrum polymerization system schematic diagram under prior art;
Fig. 3 is FDD system schematic under prior art;
Fig. 4 is TDD system schematic under prior art;
Fig. 5 is LTE-A Solution Architecture schematic diagram in the embodiment of the present invention;
Fig. 6 A is base station functions structural representation in the embodiment of the present invention;
Fig. 6 B is UE illustrative view of functional configuration in the embodiment of the present invention;
Fig. 7 is that in the embodiment of the present invention, response message merging feedback instruction flow chart is carried out in base station;
Fig. 8 is the scheduling of the descending carrier based on TDD technology schematic diagram in the embodiment of the present invention;
Fig. 9 and Figure 10 are the scheduling of the descending carrier based on FDD technology schematic diagram in the embodiment of the present invention;
Figure 11 is that in the embodiment of the present invention, UE carries out response message merging process of feedback figure to base station.
Embodiment
In the embodiment of the present invention, in LTE-A system, in order to realize the merging feedback instruction of response message, intrasystem base station sends and carries downlink data packet number (Downlink AssignmentIndex to user terminal, DAI) down dispatch information, indicating user terminal, based on to the descending carrier number that is scheduled should DAI arranging, merges feedback response message to base station side.Simultaneously, in order to realize the merging feedback of response message, in the embodiment of the present invention, intrasystem use in every family terminal receives the down dispatch information that carries DAI that above-mentioned base station sends, determine based on this DAI the descending carrier number that is scheduled, and receive data by the each descending carrier being scheduled, and judge in feedback window, whether to lose descending carrier, if determine and lose descending carrier in feedback window according to judged result, not to base station feedback response message, if determine and do not lose descending carrier in feedback window according to judged result, whether further judge in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if, to base station feedback nack message, otherwise, according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Consult shown in Fig. 5, Fig. 6 A and Fig. 6 B, in the embodiment of the present invention, the system (as, LTE-A system) that merges feedback and instruction for carrying out response message comprises some base stations and user terminal, wherein,
Consult shown in Fig. 6 A, base station comprises determining unit 60 and communication unit 61, wherein,
Determining unit 60, for determining the down dispatch information of user terminal, carries DAI in this down dispatch information;
Communication unit 61, for sending down dispatch information to user terminal, the descending carrier number that is scheduled that indicating user terminal arranges based on corresponding DAI, merges feedback response message to base station side.
Wherein, if system adopts TDD technology, when communication unit 61 carries the down dispatch information of DAI to user terminal transmission, in the descending carrier that is scheduled in each wireless sub-frame, carry respectively corresponding DAI.If system adopts FDD technology, when communication unit 61 carries the down dispatch information of DAI to user terminal transmission, in the each descending carrier being scheduled, carry respectively corresponding DAI.
As shown in Figure 6A, in base station, further comprise the first setting unit 62 for mapping relations between DAI and descending carrier scheduling number are set in TDD system, and the second setting unit 63 of mapping relations between DAI and descending carrier scheduling number is set in FDD system.The concrete set-up mode that the first setting unit 62 and the second setting unit 63 are carried out will describe in detail in subsequent embodiment.
Consult shown in Fig. 6 B, user terminal comprises communication unit 600, processing unit 601 and feedback unit 602, wherein
Communication unit 600, the down dispatch information that carries DAI sending for receiving base station shown in Fig. 6 A, and determine based on described DAI the descending carrier number that is scheduled;
Processing unit 601, receives data for the each descending carrier by being scheduled, and judges in feedback window, whether to lose descending carrier;
Feedback unit 602, in the time determining that according to judged result feedback window is lost descending carrier, not to base station feedback response message; And do not lose descending carrier in determining feedback window according to judged result time, whether further judge in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if, to base station feedback nack message, otherwise, according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.
Wherein, the concrete mode of the various response messages of feedback unit 602 execution feedback will describe in detail in subsequent embodiment.
Based on said system framework, to consult shown in Fig. 7, in the invention process, the detailed process of merging feedback instruction of response message is carried out in base station to user terminal (hereinafter referred to as UE) as follows:
Step 700: the down dispatch information of user terminal is determined in base station, carries DAI in this down dispatch information.
Step 710: base station sends down dispatch information to user terminal, the descending carrier number that is scheduled that indicating user terminal arranges based on corresponding DAI, merges feedback response message to base station side.
In the present embodiment, corresponding DAI arranges while being scheduled accordingly descending carrier number, is divided into following two kinds of situations:
In the first situation, for TDD system, the DAI of the 2bits in the down dispatch information (DL grant) of formulating in the Rel-8 of LTE system is reused in base station, in the current descending sub frame of notice UE, dispatch altogether several descending carriers and carried out transfer of data, being base station sends while carrying the down dispatch information of DAI to UE, in the descending carrier that is scheduled in each wireless sub-frame, carries respectively corresponding DAI.For example, consult shown in Fig. 8, base station has been dispatched descending carrier and has been carried out transfer of data on descending sub frame 1, descending sub frame 3, descending sub frame 4, has dispatched altogether 3 descending carriers in descending sub frame 1, the DAI=3 carrying in descending sub frame 1; In descending sub frame 3, dispatch 1 descending carrier, the DAI=1 carrying in descending sub frame 3, and 2 descending carriers in descending sub frame 4, are dispatched, the DAI=2 carrying in descending sub frame 4, wherein, the descending carrier of dispatching in each descending sub frame can be downlink sharied signal channel (Physical Downlink SharedChannel, PDSCH).
In the present embodiment, in TDD system, because DAI only has 2bits, and the descending carrier number of UE polymerization is N in system, N gets natural number, maximum polymerization carrier number T≤N that system can be supported, corresponding DAI arranges while being scheduled accordingly descending carrier number, including but not limited to following mode:
In four kinds of values that characterize at DAI, set the respectively corresponding b1 kind descending carrier scheduling of any a1 value number, and set the respectively corresponding b1-1 kind descending carrier scheduling of other 4-a1 values number; Wherein, a1=(T-1) mod 4+1, b1=ceil (T/4), T is the maximum polymerization carrier number that system can be supported, and mod is remainder operation, and ceil is capping operation.
For example, suppose T=4, a1=4, b1=1, so, consults shown in table 2, and when the value of DAI is " 00 ", " 01 ", " 10 ", " 11 ", the descending carrier number that represents to be respectively scheduled is 1,2,3,4.Certainly, table 2 is only giving an example of a kind of situation, is not limited to this kind of set-up mode.
Table 2
Again for example, suppose T=5, a=1, b=2, so, consult shown in table 3, when the value of DAI is " 00 ", represent that the descending carrier number that is scheduled is 1 or 5, and the value of DAI is while be " 01 ", " 10 ", " 11 ", the expression descending carrier number that is scheduled is 2,3,4 respectively.
Table 3
Certainly, T=5, a1=1, when b1=2, four kinds of values of DAI and the mapping relations that are scheduled between descending carrier number also can be set to the form shown in table 4 or table 5, concrete set-up mode is decided in its sole discretion according to actual application environment by administrative staff, and following examples are all like this, will not repeat them here.
Table 4
Table 5
Again for example, suppose T=10, a1=2, b1=3, so, consult shown in table 6, when the value of DAI is " 00 ", the descending carrier number that represents to be scheduled is 1 or 2 or 3, the value of DAI is when " 01 ", the descending carrier number that represents to be scheduled is 4 or 5 or 6, and when the value of DAI be " 10 ", the expression descending carrier number that is scheduled is 7 or 8, and DAI value is while being " 11 ", the descending carrier number that represents to be scheduled is 9 or 10.Wherein, " 00 " and " 01 " respectively corresponding three kinds of descending carrier numbers that are scheduled is different, and in like manner, " 10 " and " 11 " respectively two kinds of descending numbers that are scheduled of correspondence are also different.Certainly, the mapping relations shown in table 6 are only for example a kind of, do not limit other set-up modes.
Table 6
Be different from above-mentioned the first situation, in the second situation, for FDD system, also can in down dispatch information (DL grant), carry DAI, the descending carrier scheduling number that notice UE is current, being base station sends while carrying the down dispatch information of DAI to UE, in the each descending carrier being scheduled, carries respectively corresponding DAI.
Different from TDD system, for reducing signaling consumption, DAI can comprise 1bit data, also can comprise 2bits data.
If DAI comprises 1bit data, the descending carrier that base station can be dispatched system is divided at least two groups (preferably, ≤ tri-groups), the descending carrier number comprising in every group is not more than 2, and for each group of descending carrier, set two kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes.
For example, consult shown in Fig. 9, have 5 polymerization descending carriers in supposing the system, base station is divided into 3 groups in advance so, and wherein, descending carrier 1 and descending carrier 2 are first group, and descending carrier 3 and descending carrier 4 are second group, and descending carrier 5 is the 3rd group.2 descending carriers in first group are all scheduled, corresponding DAI=2; In second group, only have 1 descending carrier to be scheduled, corresponding DAI=1; 1 descending carrier in the 3rd group is scheduled, corresponding DAI=1.And two kinds of values of the DAI of 1bit and the mapping relations that are scheduled between descending carrier number can be set to the form shown in table 7, but only for for example, be not limited to this.
Table 7
If DAI comprises 2bits data, the descending carrier that base station can be dispatched system is divided at least two groups, the descending carrier number comprising in every group is not more than 4, and for each group of descending carrier, sets four kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes.
For example, consult shown in Figure 10, have 5 polymerization descending carriers in supposing the system, base station is divided into 2 groups in advance so, and wherein, descending carrier 1, descending carrier 2, descending carrier 3 and descending carrier 4 are first group, and descending carrier 5 is second group.In first group, there are 3 descending carriers to be scheduled, corresponding DAI=3; 1 descending carrier in second group is scheduled, corresponding DAI=1.And four kinds of values of the DAI of 2bits and the mapping relations that are scheduled between descending carrier number can be set to the form shown in table 8, but only for for example, be not limited to this.
Table 8
The various DAI that record in above embodiment and the mapping relations that are scheduled between descending carrier number, made an appointment by base station side and end side, is present in base station side and end side simultaneously.
Based on above-described embodiment, to consult shown in Figure 11, in the present embodiment, UE receives after the down dispatch information that carries DAI of base station transmission, and the detailed process that merges feedback response message is as follows:
The down dispatch information that carries DAI that the method that step 1100:UE reception base station adopts step 700-step 710 to record sends, and determine based on this DAI the descending carrier number that is scheduled.
Step 1110:UE receives data by the each descending carrier being scheduled, and judges in feedback window whether lose descending carrier, if so, carry out step 1120; Otherwise, carry out step 1130.
So-called feedback window, refers to the multiple descending carriers and the descending sub frame that in same sub-frame of uplink, carry out ACK/NACK information feedback.For TDD system, the big or small L=N × M of feedback window, wherein N is the descending carrier number of UE polymerization, M is the descending sub frame number feeding back in same sub-frame of uplink.For FDD system, the big or small L=N of feedback window, N is the descending carrier number of UE polymerization.
In the present embodiment, UE performs step at 1110 o'clock, including but not limited to following two kinds of implementations:
The first: receive before data/receive in data procedures/receive data after, DAI and the each down dispatch information of UE based on receiving (also can adopt other modes, herein only for for example) judge in feedback window, whether to lose descending carrier, if, data are not carried out to decoding, also do not feed back any information to base station side; Otherwise, then data are carried out decoding and carried out subsequent treatment.
The second: decoding immediately after reception data, walk abreast, DAI and the each down dispatch information of UE based on receiving (also can adopt other modes, herein only for for example) judge in feedback window, whether to lose descending carrier, if,, regardless of data decoding result, all preferential selection do not fed back any information to base station side; Otherwise, carry out subsequent treatment according to data decoding result.
In above-mentioned steps 1100, so-called UE determines and in feedback window, loses the situation that descending carrier refers to that part descending carrier is lost.For example, consult shown in Fig. 8, in descending sub frame 1, UE receives only the descending carrier 1 and the descending carrier 2 that are scheduled, loses descending carrier 3, and UE can be according in descending sub frame 1, determine loss descending carrier 3 from DAI and the down dispatch information of descending carrier 1 and descending carrier 2 receptions, if descending carrier 1, descending carrier 2 and descending carrier 3 are all lost, UE can not judge loss descending carrier, and the respective handling mode of this situation will continue in follow-up flow process intermediary.Again for example, consult shown in Fig. 9, in first group of downstream carrier group, if UE receives only the descending carrier 1 being scheduled, lose descending carrier 2, UE can determine loss descending carrier 2 according to the DAI receiving from descending carrier 1 and down dispatch information, if descending carrier 1 and descending carrier 2 are all lost, UE can not judge loss descending carrier, and the respective handling mode of this situation also will continue in follow-up flow process intermediary.
Step 1120:UE determines in feedback window and loses descending carrier according to judged result, not to base station feedback response message, i.e. and DTX state.
Step 1130:UE determines and in feedback window, do not lose descending carrier according to judged result, whether further judges in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if so, carry out step 1140; Otherwise, carry out step 1150.
Step 1140:UE is to base station feedback nack message.
Step 1150:UE is according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.
In the present embodiment, for TDD system, the number of the correct descending carrier relevant information receiving in above-mentioned feedback window, for the number of the correct descending sub frame receiving in feedback window, and for FDD system, the number of the correct descending carrier relevant information receiving in above-mentioned feedback window is the number of the correct downstream carrier group receiving in feedback window.
In the time carrying out above-mentioned steps 1140 and step 1150, UE can adopt but be not limited to following two kinds of modes and carry out feeding back ACK/nack message:
1) adopt the b0 that comprises 2bits data, b1 is to base station side feeding back ACK/nack message, wherein,
At b0, in four kinds of values that b1 characterizes, set the corresponding nack message of any value, and in other values, set a2 value corresponding b2 kind ACK information respectively, set 3-a2 value corresponding b2-1 kind ACK information respectively, be used to indicate the number of the descending carrier relevant information of correct reception, wherein, a2=(T-1) mod 3+1, b2=ceil (T/3), T is the maximum polymerization carrier number that system can be supported, mod is remainder operation, and ceil is capping operation.
For example, suppose T=3, a2=3, b1=1, so, consult shown in table 9 b0, when the value of b1 is " 00 ", what represent UE feedback is nack message, b0, the value of b1 be " 01 ", " 10 " and " 11 " time, what represent UE feedback is ACK information, and the number of the descending carrier relevant information of the correct reception of instruction is respectively 1,2 and 3.Certainly, the mapping relations shown in table 9 only, for for example, are not limited to this kind of mapping mode, and the various values of the number of the correct descending carrier relevant information receiving shown in table 9 also can set voluntarily according to actual application environment, do not repeat them here.
Table 9
Again for example, suppose T=8, a2=2, b2=3, so, consults shown in table 10, b0, when the value of b1 is " 00 ", what represent UE feedback is nack message; B0, when the value of b1 is " 01 ", " 10 " and " 11 ", what represent UE feedback is ACK information, and the number of the descending carrier relevant information of the correct reception of " 01 " instruction is for being 1 or 2 or 3, the number of the descending carrier relevant information of the correct reception of " 10 " instruction is 4 or 5 or 6, the number of the descending carrier relevant information of the correct reception of " 11 " instruction is 7 or 8, obviously, the value of the number of the descending carrier relevant information of " 01 ", " 10 " and " 11 " corresponding correct reception is different.Certainly, the mapping relations shown in table 10 only, for for example, are not limited to this kind of mapping mode, and the various values of the number of the correct descending carrier relevant information receiving shown in table 10 also can set voluntarily according to actual application environment, do not repeat them here.
Table 10
2) adopt the symbol d (n) that comprises 5 phase-shift keyings (PSK) to base station side feeding back ACK/nack message, wherein,
In five kinds of values that characterize at d (n), set the corresponding nack message of any value, and in other values, set a3 value corresponding b3 kind ACK information respectively, set 4-a3 value corresponding b3-1 kind ACK information respectively, be used to indicate the number of the descending carrier relevant information of correct reception, wherein, a3=(T-1) mod 4+1, b3=ceil (T/4), T is the maximum polymerization carrier number that system can be supported, mod is remainder operation, and ceil is capping operation.
For example, suppose T=4, a3=4, b3=1.So, consult shown in table 11, when the value of d (n) is " 1 ", what represent UE feedback is nack message, and the value of d (n) is
with
time, what represent UE feedback is ACK information, and the number of the descending carrier relevant information of the correct reception of instruction is respectively 1,2,3 and 4.Certainly, the mapping relations shown in table 11 only, for for example, are not limited to this kind of mapping mode, and the various values of the number of the correct descending carrier relevant information receiving shown in table 11 also can set voluntarily according to actual application environment, do not repeat them here.
Table 11
Again for example, suppose T=8, a3=2, b3=2, so, consults shown in table 12, and when the value of d (n) is " 1 ", what represent UE feedback is nack message; The value of d (n) is
with
time, what represent UE feedback is ACK information, and
the number of the descending carrier relevant information of the correct reception of instruction is for being 1 or 2,
the number of the descending carrier relevant information of the correct reception of instruction is 3 or 4,
the number of the descending carrier relevant information of the correct reception of instruction is 5 or 6,
the number of the descending carrier relevant information of the correct reception of instruction is 7 or 8, obviously,
with
the value of the number of the descending carrier relevant information of corresponding correct reception is different.Certainly, the mapping relations shown in table 12 only, for for example, are not limited to this kind of mapping mode, and the various values of the number of the correct descending carrier relevant information receiving shown in table 12 also can set voluntarily according to actual application environment, do not repeat them here.
Table 12
Adopt aforesaid way, UE can pass through the not mode to base station feedback response message, feeding back ACK/nack message, and the data receiver situation in feedback window is merged and feeds back to base station, carries out corresponding subsequent treatment by base station according to the feedback of UE.Comprise:
Situation 1:UE receives after data, determine in feedback window and have at least one descending carrier decoding error, feed back nack message, base station receives after nack message, know data packet transmission mistake, all descending carriers that are scheduled in feedback window are retransmitted.
For example, consult shown in Fig. 8, suppose, in each descending carrier that UE determines that descending sub frame 1-4 comprises, to have a descending carrier decoding failure at least, to base station feedback d (n)=1.Base station receives after d (n)=1, knows data packet transmission mistake, all descending carriers that are scheduled that in feedback window, all wireless sub-frames comprise is retransmitted.
Again for example, consult shown in Fig. 9, suppose, in each descending carrier that UE determines that downstream carrier group one to three comprises, to have a descending carrier decoding failure at least, to base station feedback d (n)=1.Base station receives after d (n)=1, knows data packet transmission mistake, all descending carriers that are scheduled that in feedback window, all downstream carrier group comprise is retransmitted.
Situation 2:UE receives after data, determines in feedback window and has at least a descending carrier to lose, not to base station feedback response message, it is DTX state, data packet transmission mistake is known after determining that UE is DTX state in base station, all descending carriers that are scheduled in feedback window is retransmitted.
UE determines that in feedback window, having at least a descending carrier to lose comprises:
For example, consult shown in Fig. 8, the number of the descending carrier that UE receives in certain descending sub frame is less than the value of the DAI carrying in this descending sub frame;
Again for example, consult shown in Fig. 9, the number of the descending carrier that UE receives in certain downstream carrier group is less than the value of the DAI carrying in this downstream carrier group.
Situation 3:UE receives after data, determines that the equal decoding of data receiving in feedback window is correct, and to the corresponding ACK information of base station feedback, base station receives after ACK information, knows that all packets are all correctly received, and does not need to retransmit.
For example, consult shown in Fig. 8, UE determines that receiving in the descending sub frame 1 of data, descending sub frame 3, descending sub frame 4, the equal decoding of all descending carriers that are scheduled is correct, to base station feedback
base station receives
after, know that all packets are all correctly received, and do not retransmit.
Again for example, consult shown in Fig. 9, UE determines that receiving in the downstream carrier group one of data, downstream carrier group two, downstream carrier group three, the equal decoding of all descending carriers that are scheduled is correct, to base station feedback
base station receives
after, know that all packets are all correctly received, and do not retransmit.
Situation 4:UE receives after data, determine that the equal decoding of data receiving in feedback window is correct, to the corresponding ACK information of base station feedback, base station receives after ACK information, know and have the packet of losing, just all descending carriers that are scheduled in feedback window are retransmitted.
For example, consult shown in Fig. 8, UE, in feedback window, only receives data in descending sub frame 1 and descending sub frame 3, and descending sub frame 4 is all lost, and the equal decoding of all descending carriers of receiving in descending sub frame 1 and descending sub frame 3 is correct, and UE is to base station feedback
base station receives
after, know and have data-bag lost, lost a descending sub frame, all descending carriers that are scheduled that descending sub frame in feedback window 1, descending sub frame 3 and descending sub frame 4 comprised retransmit.
Again for example, consult shown in Fig. 9, UE is in feedback window, only in downstream carrier group one and downstream carrier group two, receive data, downstream carrier group three is all lost, and the equal decoding of all descending carriers of receiving in downstream carrier group one and downstream carrier group two is correct, and UE is to base station feedback
base station receives
after, know and have data-bag lost, lost a downstream carrier group, all descending carriers that are scheduled that downstream carrier group in feedback window one, downstream carrier group two and downstream carrier group three comprised retransmit.
In sum, in the embodiment of the present invention, in LTE-A system, UE receives after the DAI of base station transmission, determine according to DAI the descending carrier number that is scheduled, and receive data by the each descending carrier being scheduled, and judge in feedback window, whether to lose descending carrier; If determine in feedback window and lose descending carrier according to judged result, not to base station feedback response message; If determine and do not lose descending carrier in feedback window according to judged result, whether further judge in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if, to base station feedback nack message, otherwise, according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.Like this, UE just passes through the not mode to base station feedback response message, feeding back ACK/nack message, data receiver situation in feedback window is merged and feeds back to base station side, make base station side can know in time the data receiving state of UE, and occur when abnormal at data receiver, adopt in time strategy accurately to carry out respective handling, thereby improved to a great extent system survivability, also promoted performance and the service quality of system.
Obviously, those skilled in the art can carry out various changes and modification and not depart from this present invention
Bright spirit and scope.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a merging feedback indication method for response message in LTE-A system, is characterized in that, comprising:
The down dispatch information of user terminal is determined in base station, carries downlink data packet number DAI in this down dispatch information;
Base station sends described down dispatch information to user terminal, and the descending carrier number that is scheduled that indicating user terminal arranges based on the described DAI of correspondence merges feedback response message to base station side;
Wherein, if system adopts FDD technology, when the down dispatch information of DAI is carried to user terminal transmission in described base station, base station is carried respectively corresponding DAI and is mail to user terminal in the each descending carrier being scheduled; Corresponding DAI arranges while being scheduled accordingly descending carrier number, if DAI comprises 1bit data, the descending carrier that system can be dispatched is divided at least two groups, the descending carrier number comprising in every group is not more than 2, and for each group of descending carrier, set two kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes; If DAI comprises 2bits data, the descending carrier that system can be dispatched is divided at least two groups, the descending carrier number comprising in every group is not more than 4, and for each group of descending carrier, sets four kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes.
2. a merging feedback indication method for response message in LTE-A system, is characterized in that, comprising:
The down dispatch information of user terminal is determined in base station, carries downlink data packet number DAI in this down dispatch information;
Base station sends described down dispatch information to user terminal, and the descending carrier number that is scheduled that indicating user terminal arranges based on the described DAI of correspondence merges feedback response message to base station side;
Wherein, if system adopts TDD technology, when the down dispatch information of DAI is carried to user terminal transmission in described base station, in the descending carrier that is scheduled of base station in each wireless sub-frame, carry respectively corresponding DAI and mail to user terminal; Corresponding DAI arranges while being scheduled accordingly descending carrier number, DAI comprises 2bits data, in four kinds of values that characterize at DAI, set the respectively corresponding b1 kind descending carrier scheduling of any a1 value number, and set the respectively corresponding b1-1 kind descending carrier scheduling of other 4-a1 values number; Wherein, a1=(T-1) mod4+1, b1=ceil (T/4), T is the maximum polymerization carrier number that system can be supported, and mod is remainder operation, and ceil is capping operation.
3. a merging feedback method for response message in LTE-A system, is characterized in that, comprising:
User terminal receives the down dispatch information that carries downlink data packet number DAI that base station adopts method as claimed in claim 1 or 2 to send, and determines based on described DAI the descending carrier number that is scheduled;
User terminal receives data by the each descending carrier being scheduled, and judges in feedback window, whether to lose descending carrier;
If user terminal is determined in feedback window and is lost descending carrier according to judged result, not to base station feedback response message;
If user terminal is determined and is not lost descending carrier in feedback window according to judged result, whether further judge in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if, to base station feedback nack message, otherwise, according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.
4. method as claimed in claim 3, is characterized in that, user terminal, to base station feedback ACK/NACK information, comprising:
The b0 that employing comprises 2bits data, b1 is to base station feedback ACK/NACK information, wherein,
At b0, in four kinds of values that b1 characterizes, set the corresponding nack message of any value, and in other values, set a2 value corresponding b2 kind ACK information respectively, set 3-a2 value corresponding b2-1 kind ACK information respectively, be used to indicate the number of the descending carrier relevant information of correct reception, wherein, a2=(T-1) mod3+1, b2=ceil (T/3), T is the maximum polymerization carrier number that system can be supported, mod is remainder operation, and ceil is capping operation.
5. method as claimed in claim 3, is characterized in that, user terminal, to base station feedback ACK/NACK information, comprising:
The symbol d (n) that employing comprises 5 phase-shift keyings is to base station feedback ACK/NACK information, wherein,
In five kinds of values that characterize at d (n), set the corresponding nack message of any value, and in other values, set a3 value corresponding b3 kind ACK information respectively, set 4-a3 value corresponding b3-1 kind ACK information respectively, be used to indicate the number of the descending carrier relevant information of correct reception, wherein, a3=(T-1) mod4+1, b3=ceil (T/4), T is the maximum polymerization carrier number that system can be supported, mod is remainder operation, and ceil is capping operation.
6. the merging of a response message feedback indicating device in LTE-A system, is characterized in that, comprising:
Determining unit, for determining the down dispatch information of user terminal, carries downlink data packet number DAI in this down dispatch information;
Communication unit, for send described down dispatch information to user terminal, the descending carrier number that is scheduled that indicating user terminal arranges based on the described DAI of correspondence, merges feedback response message to base station side; Wherein, if system adopts FDD technology, when described communication unit carries the down dispatch information of DAI to user terminal transmission, in the each descending carrier being scheduled, carry respectively corresponding DAI;
The second setting unit, for corresponding DAI, the descending carrier number that is scheduled is accordingly set, wherein, if DAI comprises 1bit data, the descending carrier that described the second setting unit can be dispatched system is divided at least two groups, the descending carrier number comprising in every group is not more than 2, and for each group of descending carrier, sets two kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes; If DAI comprises 2bits data, the descending carrier that described the second setting unit can be dispatched system is divided at least two groups, the descending carrier number comprising in every group is not more than 4, and for each group of descending carrier, sets four kinds of values corresponding a kind of descending carrier scheduling number respectively that DAI characterizes.
7. the merging of a response message feedback indicating device in LTE-A system, is characterized in that, comprising:
Determining unit, for determining the down dispatch information of user terminal, carries downlink data packet number DAI in this down dispatch information;
Communication unit, for send described down dispatch information to user terminal, the descending carrier number that is scheduled that indicating user terminal arranges based on the described DAI of correspondence, merges feedback response message to base station side; Wherein, if system adopts TDD technology, when described communication unit carries the down dispatch information of DAI to user terminal transmission, in the descending carrier that is scheduled in each wireless sub-frame, carry respectively corresponding DAI;
The first setting unit, for corresponding DAI, the descending carrier number that is scheduled is accordingly set, wherein, DAI comprises 2bits data, in four kinds of values that characterize at DAI, set the respectively corresponding b1 kind descending carrier scheduling of any a1 value number, and set the respectively corresponding b1-1 kind descending carrier scheduling of other 4-a1 values number; Wherein, a1=(T-1) mod4+1, b1=ceil (T/4), T is the maximum polymerization carrier number that system can be supported, and mod is remainder operation, and ceil is capping operation.
8. a merging feedback device for response message in LTE-A system, is characterized in that, comprising:
Communication unit, the down dispatch information that carries downlink data packet number DAI sending for the device receiving as described in claim 6 or 7, and determine based on described DAI the descending carrier number that is scheduled;
Processing unit, receives data for the each descending carrier by being scheduled, and judges in feedback window, whether to lose descending carrier;
Feedback unit, in the time determining that according to judged result feedback window is lost descending carrier, not to base station feedback response message; And do not lose descending carrier in determining feedback window according to judged result time, whether further judge in the each descending carrier being scheduled in feedback window arbitrary code word generation decoding error according to data decoding result, if, to base station feedback nack message, otherwise, according to the number of the correct descending carrier relevant information receiving in feedback window, to ACK information corresponding to base station feedback.
9. device as claimed in claim 8, it is characterized in that, described feedback unit is during to base station feedback ACK/NACK information, the b0 that employing comprises 2bits data, b1 is to base station feedback ACK/NACK information, wherein, at b0, in four kinds of values that b1 characterizes, described feedback unit is set the corresponding nack message of any value, and in other values, set a2 value corresponding b2 kind ACK information respectively, set 3-a2 value corresponding b2-1 kind ACK information respectively, be used to indicate the number of the descending carrier relevant information of correct reception, wherein, a2=(T-1) mod3+1, b2=ceil (T/3), T is the maximum polymerization carrier number that system can be supported, mod is remainder operation, ceil is capping operation.
10. device as claimed in claim 8, it is characterized in that, described user terminal is during to base station feedback ACK/NACK information, the symbol d (n) that employing comprises 5 phase-shift keyings is to base station feedback ACK/NACK information, wherein, in five kinds of values that characterize at d (n), described feedback unit is set the corresponding nack message of any value, and in other values, set a3 value corresponding b3 kind ACK information respectively, set 4-a3 value corresponding b3-1 kind ACK information respectively, be used to indicate the number of the descending carrier relevant information of correct reception, wherein, a3=(T-1) mod4+1, b2=ceil (T/4), T is the maximum polymerization carrier number that system can be supported, mod is remainder operation, ceil is capping operation.
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| CN103621168B (en) | 2012-06-28 | 2017-05-10 | 华为技术有限公司 | Downlink-data feedback information transmission method, terminal, and base station |
| CN103516501B (en) * | 2012-06-29 | 2017-05-03 | 电信科学技术研究院 | Method, system and device for sending and receiving feedback information |
| CN103944688B (en) * | 2013-01-22 | 2017-09-29 | 电信科学技术研究院 | A kind of processing method of feedback information, equipment and system |
| CN108463963B (en) * | 2016-01-13 | 2022-03-08 | 联想创新有限公司（香港) | Apparatus for data acknowledgement in wireless communication system and method thereof |
| CN107040350B (en) * | 2016-02-03 | 2020-07-07 | 电信科学技术研究院 | Transmission method, receiving method, terminal and network side equipment of uplink control information |
| WO2018014162A1 (en) * | 2016-07-18 | 2018-01-25 | 广东欧珀移动通信有限公司 | Method and device for transmitting data |
| CN107733580B (en) * | 2016-08-12 | 2020-03-03 | 电信科学技术研究院 | Transmission method, device and system of feedback information |
| CN111294161B (en) * | 2019-02-26 | 2022-08-26 | 北京紫光展锐通信技术有限公司 | HARQ feedback method and device, storage medium and terminal |
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