CN101409922A - Interruption transmission detection method and corresponding down distribution indication method - Google Patents

Interruption transmission detection method and corresponding down distribution indication method Download PDF

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CN101409922A
CN101409922A CNA2008101673319A CN200810167331A CN101409922A CN 101409922 A CN101409922 A CN 101409922A CN A2008101673319 A CNA2008101673319 A CN A2008101673319A CN 200810167331 A CN200810167331 A CN 200810167331A CN 101409922 A CN101409922 A CN 101409922A
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terminal
descending sub
dai
frame
value
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CN101409922B (en
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戴博
郝鹏
梁春丽
张禹强
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a downlink allocation indication method. In all downlink sub-frames which correspond to an uplink sub-frame and have resources allocated to a terminal, a DAI value sent by a base station to the terminal in other downlink sub-frames except for the last downlink sub-frame equals (M-1)modn+1, and the DAI value sent to the terminal in the last sub-frame is 1-2<i> which is not equal to the value of the (M-1)modn+1, M is the total number of the last downlink sub-frame and the previous downlink sub-frames which have resources allocated to the terminal, n equals 2<i>, and i is the bit number of DAI signaling; the terminal calculates the DAI value sent to the terminal in every downlink sub-frame according to a corresponding way in which the DAI value is determined by the base station, and the terminal judges whether discontinuous transmission occur by comparing the DAI value with the received DAI value. The method solves the problem of being incapable of accurately detecting the DTX situation resulting from the loss of the last downlink sub-frame that corresponds to the uplink sub-frame and is allocated to the terminal.

Description

A kind of detection method of interrupted emission and corresponding downstream are distributed indicating means
Technical field
The present invention relates to the communications field, distribute indicating means in particular to a kind of detection method and corresponding downstream of interrupted emission.
Background technology
Fig. 1 shows LTE (Long Term Evolution, Long Term Evolution) system TDD (Time DivisionDuplex, time division duplex) frame structure of pattern, in this frame structure, the radio frame (radio frames) of a 10ms is divided into two half frame (field), it is the 0.5ms time slot that each field is divided into 10 length, and adjacent two time slots are formed the subframe that length is 1ms.Comprise 5 subframes in the field.For Normal CP (Normal Cyclic Prefix, regular circulation prefix), the symbol that it is 66.7 μ s that time slot comprises 7 length, wherein the CP length of first symbol is 5.21 μ s, the CP length of all the other 6 symbols is 4.69 μ s; For Extended (Extended, expansion) CP, a time slot comprises 6 symbols, and the CP length of all symbols is 16.67 μ s.In this frame structure, the preparation characteristics of subframe are:
(1) in order to reduce the configured number of ascending-descending subframes number, LTE TDD has stipulated the allocation plan of 7 kinds of ascending-descending subframes numbers in a radio frames, sees Table 1.All subframes all are divided into three classes, the one, descending sub frame; The one, special subframe; The one, sub-frame of uplink; As disposed 1 o'clock, subframe 2,3,7,8 are used for uplink, subframe 0,4,5,9 are used for downlink transfer, and subframe 1,6 is a special subframe simultaneously.
Table 1LTE TDD up-downgoing proportional arrangement
Figure A20081016733100051
Figure A20081016733100061
Wherein, D represents descending sub frame, and U represents sub-frame of uplink, and S represents special subframe.
(2) special subframe comprises 3 special time slots, is respectively DwPTS (Downlink Pilot TimeSlot, descending pilot frequency time slot), GP (Guard Period, protection is at interval) and UpPTS (Uplink PilotTime Slot, uplink pilot time slot), wherein:
1. DwPTS is used for descendingly, and minimum three symbols, the 3rd symbol are used to transmit P-SCH (Primary-Synchronization, synchronously main) signal;
2. GP does not transmit any data for the protection interval;
3. UpPTS is used for uply, can be used to transmit signals such as RACH (Random Access Channel, Random Access Channel), sounding (detection) pilot tone;
(3) the previous subframe of special subframe is fixed for downlink transfer; A back subframe of special subframe is fixed for uplink.
In LTE TDD, subscriber equipment (UE, User Equipment) should be at the sub-frame of uplink PUCCH of subframe n+k (k＞3) (Physical Uplink Control Channel, Physical Uplink Control Channel) feeds back (Physical Downlink Shared Channel in to the PDSCH among the descending sub frame n, Physical Downlink Shared Channel) the affirmation information A CK (Acknowledge of data, correctly reply)/NACK (Non-Acknowledge, wrong responses).Also can in this sub-frame of uplink, be used for feeding back this confirmation ACK/NACK among the PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) of transmitting uplink data.Wherein, subframe sequence number and its corresponding PDCCH channel (the Physical Downlink Control Channel of the index of sub-frame of uplink PUCCH by sending downlink data, Physical Downlink Control Channel) the implicit indication of the minimum CCE at place (Control Channel Element, control channel unit) sequence number.
Under the configuration of some ascending-descending subframes number of LTE TDD, the number of subframes of descending distribution can be greater than the number of subframes of uplink assignment, and promptly sub-frame of uplink need feed back the ACK/NACK information of a plurality of PDSCH subframes.Table 2 shows when the difference configuration of table 1, the descending sub frame number of sub-frame of uplink feeding back downlink PDSCH correspondence.
The descending sub frame number of correspondence during table 2 sub-frame of uplink feedback acknowledgment information
Figure A20081016733100071
Because the up needs of LTE satisfy single-carrier property, so the ACK/NACK information of a plurality of descending PDSCH subframes of feedback must satisfy single-carrier property in sub-frame of uplink.For this reason, adopt bundling (binding) and multiplexing dual mode, the bundling mode is exactly the ACK/NACK information of a plurality of descending sub frames to be carried out according to streams of code words (transmission block) sequence number (as long as the corresponding affirmation message of the PDSCH of a descending sub frame is arranged is NACK with operation, then the result is NACK just, need to retransmit the PDSCH data of these all descending sub frames of user, the affirmation message of having only the PDSCH correspondence of all descending sub frames all is ACK, the result just is ACK, the PDSCH that represents all descending sub frames receives correct), then, return an ACK/NACK information, promptly above-mentioned with the operation the result.
When if UE does not correctly detect the control channel PDCCH channel of the descending sub frame correspondence that belongs to it, UE just can feeding back ACK/nack message, DTX (DiscontinuousTransmission promptly appears, interrupted emission) situation, the affirmation information of the data correspondence of in this descending sub frame, transmitting so just can not participate in operating process in, be easy to like this affirmation information (DTX should the be considered as NACK) mistake that should feed back NACK is fed back as confirmation with ACK, the situation of this descending sub frame loss of data of this user will appear in the result, UE just can not be correct obtain the information that the data block that receives is transmitted, need the more high-rise retransmission process of carrying out, this has just increased extra time-delay.
In order to address the above problem, existing scheme is to have resource allocation to distribute DAI (Downlink AssignmentIndex of increase in the relevant control signaling format for the downlink resource of each descending sub frame of terminal, descending distribution indication) signaling, this signaling sends at the PDCCH channel.At the descending sub frame number of this sub-frame of uplink correspondence smaller or equal to 4 o'clock (when the index that removes the DL/UL proportional arrangement is other situation of 5), this terminal (UE is given in this descending sub frame and the resource allocation that has before in all descending sub frames of this DAI denoting signaling sub-frame of uplink correspondence (be somebody's turn to do " correspondence " in the literary composition is meant that these descending sub frames are all in this sub-frame of uplink feedback acknowledgment information), the sum of descending sub frame User Equipment), its value can be upgraded in every subframe.
With the DL/UL proportional arrangement is that 2 situation is illustrated, it to subframe numbers in a certain radio frames 7 sub-frame of uplink, the descending sub frame of feedback acknowledgment information comprises (can regulation in ginseng standard) on this sub-frame of uplink: subframe numbers is 0 in this radio frames, 1 and 3 descending sub frame, and subframe numbers is 9 descending sub frame in the last radio frames.If in all these descending sub frames, subframe numbers be in 0 and 3 the descending sub frame for certain terminal distribution resource, the value that then sends to the DAI signaling of this terminal in subframe numbers is 0 descending sub frame is 1, and the value that sends to the DAI signaling of this terminal in subframe numbers is 3 descending sub frame is 2.If resource that 4 descending sub frames have all been given this terminal distribution, then subframe numbers is that the value that sends to the DAI signaling of this terminal in 9,0,1 and 3 the descending sub frame is respectively 1,2,3 and 4.
The DAI signaling is 2 bits, and concrete implication is as shown in table 3:
The implication of table 3DAI signaling
DAI signaling MSB (high position), LSB (low level) The value of Value of DAI DAI
0，0 1
0，1 2
1，0 3
1，1 4
For the DL/UL proportional arrangement is that 5 situation has some special, has 9 descending sub frames feedback acknowledgment information on same sub-frame of uplink the most for a long time, because DAI has only 2 bits, when determining the value of DAI signaling is the circulation value, in these 9 descending sub frames, and the 1st, 2,3,4 have resource allocation to give in the descending sub frame of certain terminal, the value that sends to the DAI signaling of this terminal is 1,2,3,4, the 5th, 6,7,8,9 (if any) has resource allocation to give in the descending sub frame of this terminal, the value that sends to the DAI signaling of this terminal is 1,2,3,4,1.
Terminal determines according to the value of DAI signaling whether descending sub frame the DTX situation occurs.Such as above-mentioned subframe numbers be in 0 and 3 the descending sub frame for terminal distribution under the situation of resource, if terminal can correctly detect the PDCCH channel of these two subframes, reception sends to the DAI signaling of oneself, then can find to have received 2 descending sub frames, the value of DAI signaling wherein is respectively 1 and 2, and this moment, terminal can judge that reception is errorless.If previous descending sub frame loss of data this moment, then terminal has received 1 descending sub frame, and the value of DAI signaling wherein is 2, then can judge the DTX situation that taken place, and when DTX occurring, terminal does not send ACK/NACK.
But, state in realization in the process of scheme, when a certain sub-frame of uplink correspondence distribute to last descending sub frame loss of data of terminal the time, as above routine, terminal receives 1 descending sub frame, and the value of DAI signaling wherein is 1, and at this moment according to existing DAI signaling indicating mode, terminal can't detect descending sub frame and DTX occur.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of detection method of interrupted emission and corresponding downstream is distributed indicating means, with solve the sub-frame of uplink correspondence distribute to terminal last down subframe lose and the problem that can not accurately detect the DTX situation that causes.
In order to solve the problems of the technologies described above, the invention provides a kind of descending distribution indicating means, be applied to the long evolving system of TDD mode, this method comprises:
The base station is given in all descending sub frames of terminal in the resource allocation that has of a sub-frame of uplink correspondence, except that last descending sub frame, the value that sends to the descending distribution indication DAI of this terminal in other descending sub frames equals (M-1) mod n+1, and the value that sends to the DAI of this terminal in last descending sub frame is 1～2 iIn be not equal to the value of (M-1) mod n+1, M for this descending sub frame and before the resource allocation that has give the sum of the descending sub frame of this terminal, n=2 i, i is the bit number of DAI signaling;
Described base station is on the PDCCH channel described DAI to be sent to described terminal at the described Physical Downlink Control Channel that has resource allocation to give the descending sub frame of terminal.
Further, said method also can have following characteristics: n=4.
Further, said method also can have following characteristics: the value that sends to the DAI of described terminal in described last descending sub frame is (M mod n)+1.
Further, said method also can have following characteristics:
When L equaled 1, the DAI value that sends to described terminal in the 1st descending sub frame was 2 or 3 or 4; When M equaled 2, the DAI value that sends to described terminal in the 1st, 2 descending sub frame was followed successively by 1,3; When L equaled 3, the DAI value that sends to described terminal in the 1st, 2,3 descending sub frames was followed successively by 1,2,4; When L equaled 4, the DAI value that sends to described terminal in the 1st, 2,3,4 descending sub frames was followed successively by 1,2,3,1 or 1,2,3,2;
Described L is that the number of all descending sub frames of described terminal is given in the resource allocation that has of described sub-frame of uplink correspondence, and the descending sub frame of described terminal is given in the resource allocation that has that described the 1st, 2,3,4 descending sub frames are described sub-frame of uplink correspondence.
By technique scheme of the present invention, make the base station give in the descending sub frame of terminal in the resource allocation that has of sub-frame of uplink correspondence, the value operation method of the DAI of last descending sub frame and other descending sub frames is different, thereby make that terminal might be according to the quantity of the PDCCH channel that has received and DAI value wherein, when not receiving the PDCCH channel of last descending sub frame, can correctly detect.
In order to solve the problems of the technologies described above, the present invention also provides a kind of detection method of interrupted emission, is applied to the long evolving system of two formula patterns of time-division, and this method comprises:
The base station is given in all descending sub frames of terminal in the resource allocation that has of a sub-frame of uplink correspondence, except that last descending sub frame, the value that sends to the descending distribution indication DAI of this terminal in other descending sub frames equals (M-1) mod n+1, and the value that sends to the DAI of this terminal in last descending sub frame is 1～2 iIn be not equal to the value of (M-1) mod n+1, M for this descending sub frame and before the resource allocation that has give the sum of the descending sub frame of this terminal, n=2 i, i is the bit number of DAI signaling;
Described base station is on the PDCCH channel described DAI to be sent to described terminal at the described Physical Downlink Control Channel that has resource allocation to give the descending sub frame of terminal;
Described terminal is according to the number of the target P DCCH channel of all descending sub frames of a sub-frame of uplink correspondence that receives, by determining that with the base station the corresponding mode of DAI value extrapolates the value that sends to the DAI of this terminal in each descending sub frame, one by one with the corresponding descending sub frame of actual reception in send to this terminal DAI value relatively, there are the DAI value of reckoning and the unequal situation of value of the actual DAI that receives if any at least one descending sub frame, then terminal judges is resolved supervention and is penetrated situation, not any confirmation of feedback on described sub-frame of uplink.
Further, said method also can have following characteristics: n=4.
Further, said method also can have following characteristics:
The value that sends to the DAI of described terminal in described last descending sub frame is (M mod n)+1.
Further, said method also can have following characteristics:
Described terminal is calculated the value of DAI in the following manner: in all descending sub frames to the described sub-frame of uplink correspondence that receives, except that last descending sub frame, send to the value U of the DAI of this terminal in other descending sub frames DAI=(M-1) mod n+1, and send to the value of the DAI of this terminal in last descending sub frame U DAI Last = ( M mod n ) + 1 , M is that the number of the descending sub frame of the described sub-frame of uplink correspondence that received before this descending sub frame of described terminal adds 1, n=2 i, i is the bit number of DAI signaling.
Further, said method also can have following characteristics:
When L equaled 1, the DAI value that sends to described terminal in the 1st descending sub frame was 2 or 3 or 4; When M equaled 2, the DAI value that sends to described terminal in the 1st, 2 descending sub frame was followed successively by 1,3; When L equaled 3, the DAI value that sends to described terminal in the 1st, 2,3 descending sub frames was followed successively by 1,2,4; When L equaled 4, the DAI value that sends to described terminal in the 1st, 2,3,4 descending sub frames was followed successively by 1,2,3,1 or 1,2,3,2;
Described L is that the number of all descending sub frames of described terminal is given in the resource allocation that has of described sub-frame of uplink correspondence, and the descending sub frame of described terminal is given in the resource allocation that has that described the 1st, 2,3,4 descending sub frames are described sub-frame of uplink correspondence.
By technique scheme of the present invention, make the base station give in the descending sub frame of terminal in the resource allocation that has of sub-frame of uplink correspondence, the value operation method of the DAI of last descending sub frame and other descending sub frames is different, terminal is according to the quantity of the PDCCH channel that has received and DAI value wherein, when not receiving the PDCCH channel of last descending sub frame, can correctly detect the DTX situation that taken place, and then reached the effect that guarantees the complete effective transmission of downlink data, reduce the time delay of system transmissions data, improved the transmission performance of system.
In order to solve the problems of the technologies described above, the present invention also provides a kind of terminal to detect interrupted method for transmitting, is applied to the long evolving system of two formula patterns of time-division, and this method comprises:
Terminal is the number of PDCCH channel according to the target physical down control channel of all descending sub frames of a sub-frame of uplink correspondence that receives, by determining that with the base station the corresponding mode of DAI value extrapolates the value of the descending distribution indication DAI that sends to this terminal in each descending sub frame, one by one with the corresponding descending sub frame of actual reception in send to this terminal DAI value relatively, there are the DAI value of reckoning and the unequal situation of value of the actual DAI that receives if any at least one descending sub frame, judge that then resolving supervention penetrates situation.
Further, said method also can have following characteristics:
Described terminal is calculated the value of DAI in the following manner: in all descending sub frames to the described sub-frame of uplink correspondence that receives, except that last descending sub frame, the value that sends to the DAI of this terminal in other descending sub frames equals (M-1) mod n+1, and the value that sends to the DAI of this terminal in last descending sub frame is (M mod n)+1, M is that the number of the descending sub frame of the described sub-frame of uplink correspondence that received before this descending sub frame of described terminal adds 1, n=2 i, i is the bit number of DAI signaling.
By technique scheme of the present invention, terminal can be according to the quantity of the PDCCH channel that has received and DAI value wherein, when not receiving the PDCCH channel of last descending sub frame, correctly detect the DTX situation that taken place, and then reached the effect that guarantees the complete effective transmission of downlink data, reduce the time delay of system transmissions data, improved the transmission performance of system.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the frame structure of LTE system TDD mode;
Fig. 2 shows the flow chart of the detection method of the interrupted emission of the present invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
The method of present embodiment may further comprise the steps:
Step 100, the base station is given in all descending sub frames of terminal in the resource allocation that has of a sub-frame of uplink correspondence, adds the value that 1 result determines to send in last descending sub frame the DAI of this terminal behind the number M mould n according to these all descending sub frames;
The value of supposing the DAI that sends to this terminal in last descending sub frame is V DAI Last, then have V DAI Last = ( M mod n ) + 1 , The n value is taken as 4.
For there being resource allocation to give non-last descending sub frame in all descending sub frames of terminal, it sends to the value V of the DAI of this terminal DAIStill can determine, i.e. V by existing mode DAI=(M-1) mod n+1, M be in all descending sub frames of described sub-frame of uplink correspondence this descending sub frame and before the resource allocation that has give the sum of the descending sub frame of this terminal, n=2 i, i is the bit number of DAI signaling.
Step 200, described base station sends to corresponding terminal with DAI on the described PDCCH channel that the descending sub frame that resource allocation gives terminal arranged, send data to described terminal simultaneously on the resource of distributing;
Step 300, described terminal is according to the number of the PDCCH channel of all descending sub frames of a sub-frame of uplink correspondence that receives, by determining that with the base station the corresponding mode of DAI value extrapolates the value that sends to the DAI of this terminal in each descending sub frame, one by one with the corresponding descending sub frame of actual reception in send to this terminal DAI value relatively, unequal if any the value that at least one descending sub frame is calculated with the actual DAI that receives, then the DTX situation has taken place in terminal judges, not any confirmation of feedback on described sub-frame of uplink.
Terminal can be calculated the value of DAI in the following manner: in all descending sub frames to the described sub-frame of uplink correspondence that receives, except that last descending sub frame, send to the value U of the DAI of this terminal in other descending sub frames DAI=(M-1) mod n+1, and send to the value of the DAI of this terminal in last descending sub frame U DAI Last = ( M mod n ) + 1 , M is that the number of the descending sub frame of the described sub-frame of uplink correspondence that received before this descending sub frame of described terminal adds 1, n=2 i, i is the bit number of DAI signaling.
In addition, as both unanimities, terminal can be done further judgement in conjunction with other conditions, as sending the PUCCH channel indexes of ACK/NACK, does not launch to discuss at this, can be with reference to the associated documents of respective standard.
Base station and terminal might not go to calculate by above-mentioned formula, can store under each L the value of DAI in each descending sub frame fully in advance, and L is that the number of all descending sub frames of terminal is given in the resource allocation that has of a sub-frame of uplink correspondence.Be respectively:
When L equaled 1, the DAI value was 2 in the 1st descending sub frame;
When L equaled 2, the DAI value was followed successively by 1,3 in the 1st, 2 descending sub frame;
When L equaled 3, the DAI value was followed successively by 1,2,4 in the 1st, 2,3 descending sub frames;
When L equaled 4, the DAI value was followed successively by 1,2,3,1 in the 1st, 2,3,4 descending sub frames;
When L equals 5, the 1st, 2,3,4, the DAI value is followed successively by 1,2 in 5 descending sub frames, and 3,4,2;
When L equals 6, the 1st, 2,3,4, the DAI value is followed successively by 1,2 in 5,6 descending sub frames, and 3,4,1,3;
When L equaled 7, the DAI value was followed successively by 1,2,3,4,1,2,4 in the 1st, 2,3,4,5,6,7 descending sub frames;
When L equaled 8, the DAI value was followed successively by 1,2,3,4,1,2,3,1 in the 1st, 2,3,4,5,6,7,8 descending sub frames;
When L equals 9, the 1st, 2,3,4,5,6,7,8, the DAI value is followed successively by 1,2 in 9 descending sub frames, and 3,4,1,2,3,4,2.
With a kind of simple describing mode is to the DAI value in last descending sub frame, by existing mode result calculated is under 1,2,3,4 the situation, respectively it to be defined as 2,3,4,1.
But this only is a kind of execution mode, for purposes of the invention, make that importantly the value of DAI is different with existing mode result calculated in last descending sub frame, can avoid terminal like this when detecting less than the PDCCH channel in last descending sub frame, take for and correctly receive all PDCCH channels, be judged as mistakenly the DTX situation does not take place.
For example, when L equals 1, the DAI value also can be decided to be 3 or 4 approximately in the 1st descending sub frame; When L equaled 2, the DAI value also can arrange to be followed successively by 1,4 in the 1st, 2 descending sub frame; When L equaled 4, the DAI value also can arrange to be followed successively by 1,2,3,2 in the 1st, 2,3,4 descending sub frames, or the like.
Example one
Suppose that having resource allocation to give the descending sub frame number of terminal in all descending sub frames of a sub-frame of uplink correspondence is 1, then this has resource allocation to be last descending sub frame for the descending sub frame of terminal, and the value of DAI wherein is calculated as follows:
V DAI Last = ( 1 mod n ) + 1 = 2 , Wherein, n is 4;
Press the DAI signaling of agreement in the table 3 and the corresponding relation between its value, corresponding D AI signaling is 01.
If terminal does not correctly detect the target P DCCH channel on the corresponding downstream subframe, then terminal does not send any confirmation.
Example two
Suppose that having resource allocation to give the descending sub frame number of terminal in all descending sub frames of a sub-frame of uplink correspondence is 2, then have resource allocation to calculate for the value that sends to the DAI of this terminal in the 1st descending sub frame of terminal according to following formula: V DAI=(1-1) mod 4+1=1.The DAI value that sends to this terminal in last descending sub frame is calculated according to following formula: V DAI Last = ( 2 mod 4 ) + 1 = 3 . Press in the table 3 the DAI signaling of agreement and the corresponding relation between its value, corresponding D AI signaling is 00,10 in the 1st and the 2nd descending sub frame.
The base station is after described descending sub frame sends to terminal with DAI, and terminal is handled by the mode of describing in the above-mentioned steps 300.
Following mask body is discussed several situations when terminal detects two target P DCCH channels on the descending sub frame.
Situation 1:
Suppose that terminal does not correctly detect the target P DCCH channel of the 1st descending sub frame, then has:
The value that 1 of the residue that terminal receives promptly sends to the DAI of this terminal in the 2nd descending sub frame is 3, still, sends to the value of the DAI of this terminal in this descending sub frame that terminal is calculated according to the quantity of the PDCCH channel that detects descending sub frame U DAI Last = ( 1 mod n ) + 1 = 2 , Both are unequal, therefore can know the DTX situation takes place, and terminal does not send any confirmation.
Situation 2:
Suppose that terminal does not correctly detect the target P DCCH channel of the 2nd descending sub frame, then has:
The value that 1 of the residue that terminal receives promptly sends to the DAI of this terminal in the 1st descending sub frame is 1, but, the value that sends to the DAI of this terminal in terminal this descending sub frame according to the quantity reckoning that detects descending sub frame is 2, both are unequal, therefore terminal can be known generation DTX situation, does not send any confirmation.
If the PDCCH channel is not received yet in descending sub frame of terminal, then do not send any confirmation.
Example three
Suppose, having resource allocation to give the descending sub frame number of terminal in all descending sub frames of one sub-frame of uplink correspondence is 3, then there is resource allocation to give the 1st of terminal, it is that the DAI value that sends to this terminal in last descending sub frame is calculated according to following formula that the value that sends to the DAI of this terminal in 2 descending sub frames is respectively 1 and 2, the 3:
V DAI Last = ( 3 mod n ) + 1 = 4 , Wherein, n is 4;
Press the DAI signaling of agreement in the table 3 and the corresponding relation between its value, corresponding D AI signaling is 00,01 and 11 in the 1st, 2 and 3 descending sub frame.
The base station is after described descending sub frame sends to terminal with DAI, and terminal is handled by the mode of describing in the above-mentioned steps 300.
Following mask body is discussed several situations when terminal detects the target P DCCH channel of two descending sub frames.
Situation 1:
Suppose that terminal does not correctly detect the target P DCCH channel of the 1st descending sub frame, then has:
The value that sends to the DAI of this terminal in 2 descending sub frames of the residue that terminal receives (promptly having resource to send to the 2nd and the 3rd descending sub frame of this terminal) is respectively 2,4, but, terminal is 1 according to the value of the DAI that the quantity of the PDCCH channel that detects descending sub frame is calculated, 3, therefore terminal can be known generation DTX situation, does not send any confirmation.
Situation 2:
Suppose that terminal does not correctly detect the target P DCCH channel of the 2nd descending sub frame, then has:
The value that sends to the DAI of this terminal in 2 descending sub frames of the residue that terminal receives (promptly having resource allocation to give the 1st and the 3rd descending sub frame of this terminal) is followed successively by 1,4, but, the value that sends to the DAI of this terminal in terminal these two descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame is followed successively by 1,3, therefore terminal can be known generation DTX situation, does not send any confirmation.
Situation 3:
Suppose that terminal does not correctly detect the target P DCCH channel of the 3rd descending sub frame, then has:
The value that sends to the DAI of this terminal in 2 descending sub frames of the residue that terminal receives (promptly having resource allocation to give the 2nd and the 3rd descending sub frame of this terminal) is followed successively by 1,2, but, the value that sends to the DAI of this terminal in terminal these two descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame is followed successively by 1,3, therefore terminal can be known generation DTX situation, does not send any confirmation.
Example 4
Suppose, having resource allocation to give the descending sub frame number of terminal in all descending sub frames of one sub-frame of uplink correspondence is 4, then there is resource allocation to give the 1st of terminal, 2, the value that sends to the DAI of this terminal in 3 descending sub frames is respectively 1, the 2,3,4th is that the DAI value that sends to this terminal in last descending sub frame is calculated according to following formula:
V DAI Last = ( 4 mod n ) + 1 = 1 , Wherein, n is 4;
Press the DAI signaling of agreement in the table 3 and the corresponding relation between its value, corresponding D AI signaling is respectively 00,01,10 and 00 in the 1st, 2,3,4 descending sub frames.
The base station is after described descending sub frame sends to terminal with DAI, and terminal is handled by the mode of describing in the above-mentioned steps 300.
Following mask body is discussed several situations when terminal detects the target P DCCH channel of two descending sub frames.
Situation 1:
Suppose that terminal does not correctly detect the target P DCCH channel of the 1st descending sub frame, then has:
3 descending sub frames of the residue that terminal receives (promptly have resource allocation to give the 2nd of this terminal, 3,4 descending sub frames) value that sends to the DAI of this terminal in is followed successively by 2,3,1, but, the value that sends to the DAI of this terminal in terminal these 3 descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame is followed successively by 1,2,4, therefore terminal can be known generation DTX situation, does not send any confirmation.
Situation 2:
Suppose that terminal does not correctly detect the target P DCCH channel of the 2nd descending sub frame, then has:
3 descending sub frames of the residue that terminal receives (promptly have resource allocation to give the 1st of this terminal, 3,4 descending sub frames) value that sends to the DAI of this terminal in is followed successively by 1,3,1, but, the value that sends to the DAI of this terminal in terminal these 3 descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame is followed successively by 1,2,4, therefore terminal can be known generation DTX situation, does not send any confirmation.
Situation 3:
Suppose that terminal does not correctly detect the target P DCCH channel of the 3rd descending sub frame, then has:
3 descending sub frames of the residue that terminal receives (have resource allocation to give the 1st of this terminal, 2,4 descending sub frames) value that sends to the DAI of this terminal in is followed successively by 1,2,1, but, the value that sends to the DAI of this terminal in terminal these 3 descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame is followed successively by 1,2,4, therefore terminal can be known generation DTX situation, does not send any confirmation.
Situation 4:
Suppose that terminal does not correctly detect the target P DCCH channel of the 4th descending sub frame, then has:
3 descending sub frames of the residue that terminal receives (promptly have resource allocation to give the 2nd of this terminal, 3,4 descending sub frames) value that sends to the DAI of this terminal in is followed successively by 1,2,3, but, the value that sends to the DAI of this terminal in terminal these 3 descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame is followed successively by 1,2,4, therefore terminal can be known generation DTX situation, does not send any confirmation.
Above embodiment is because adopted new descending distribution indication signaling definition mode, so overcome the problem that can not detect the DTX situation that the terminal of prior art existence causes when correctly not detecting the PDCCH channel of last descending sub frame, and then reached the effect that guarantees the complete effective transmission of downlink data, reduce the time delay of system transmissions data, improved the transmission performance of system.Last that can avoid distributing to terminal according to the present invention subframe down lost and the DTX that causes detects mistake.
More than in each example only the situation to the PDCCH channel that do not detect 1 descending sub frame be described in detail, processing method according to the terminal that provides among the embodiment, terminal also can correctly detect the DTX situation under other most of situation, and the PUCCH channel indexes of combination back transmission ACK/NACK just can realize the correct detection under the various situations.
Obviously, those skilled in the art should be understood that, above-mentioned each step of the present invention can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1, a kind of descending distribution indicating means is applied to the long evolving system of TDD mode, and this method comprises:
The base station is given in all descending sub frames of terminal in the resource allocation that has of a sub-frame of uplink correspondence, except that last descending sub frame, the value that sends to the descending distribution indication DAI of this terminal in other descending sub frames equals (M-1) modn+1, and the value that sends to the DAI of this terminal in last descending sub frame is 1～2 iIn be not equal to the value of (M-1) modn+1, M for this descending sub frame and before the resource allocation that has give the sum of the descending sub frame of this terminal, n=2 i, i is the bit number of DAI signaling;
Described base station is on the PDCCH channel described DAI to be sent to described terminal at the described Physical Downlink Control Channel that has resource allocation to give the descending sub frame of terminal.
2, descending distribution indicating means as claimed in claim 1 is characterized in that n=4.
3, descending distribution indicating means as claimed in claim 1 or 2 is characterized in that,
The value that sends to the DAI of described terminal in described last descending sub frame is (Mmodn)+1.
4, descending distribution indicating means as claimed in claim 1 or 2 is characterized in that,
When L equaled 1, the DAI value that sends to described terminal in the 1st descending sub frame was 2 or 3 or 4; When M equaled 2, the DAI value that sends to described terminal in the 1st, 2 descending sub frame was followed successively by 1,3; When L equaled 3, the DAI value that sends to described terminal in the 1st, 2,3 descending sub frames was followed successively by 1,2,4; When L equaled 4, the DAI value that sends to described terminal in the 1st, 2,3,4 descending sub frames was followed successively by 1,2,3,1 or 1,2,3,2;
Described L is that the number of all descending sub frames of described terminal is given in the resource allocation that has of described sub-frame of uplink correspondence, and the descending sub frame of described terminal is given in the resource allocation that has that described the 1st, 2,3,4 descending sub frames are described sub-frame of uplink correspondence.
5, a kind of detection method of interrupted emission is applied to the long evolving system of TDD mode, and this method comprises:
The base station is given in all descending sub frames of terminal in the resource allocation that has of a sub-frame of uplink correspondence, except that last descending sub frame, the value that sends to the descending distribution indication DAI of this terminal in other descending sub frames equals (M-1) modn+1, and the value that sends to the DAI of this terminal in last descending sub frame is 1～2 iIn be not equal to the value of (M-1) modn+1, M for this descending sub frame and before the resource allocation that has give the sum of the descending sub frame of this terminal, n=2 i, i is the bit number of DAI signaling;
Described base station is on the PDCCH channel described DAI to be sent to described terminal at the described Physical Downlink Control Channel that has resource allocation to give the descending sub frame of terminal;
Described terminal is according to the number of the target P DCCH channel of all descending sub frames of a sub-frame of uplink correspondence that receives, by determining that with the base station the corresponding mode of DAI value extrapolates the value that sends to the DAI of this terminal in each descending sub frame, one by one with the corresponding descending sub frame of actual reception in send to this terminal DAI value relatively, there are the DAI value of reckoning and the unequal situation of value of the actual DAI that receives if any at least one descending sub frame, then terminal judges is resolved supervention and is penetrated situation, not any confirmation of feedback on described sub-frame of uplink.
6, detection method as claimed in claim 5 is characterized in that, n=4.
7, as claim 5 or 6 described detection methods, it is characterized in that,
The value that sends to the DAI of described terminal in described last descending sub frame is (Mmodn)+1.
8, detection method as claimed in claim 7 is characterized in that,
Described terminal is calculated the value of DAI in the following manner: in all descending sub frames to the described sub-frame of uplink correspondence that receives, except that last descending sub frame, send to the value U of the DAI of this terminal in other descending sub frames DAI=(M-1) modn+1, and send to the value of the DAI of this terminal in last descending sub frame U DAI Last = ( M mod n ) + 1 , M is that the number of the descending sub frame of the described sub-frame of uplink correspondence that received before this descending sub frame of described terminal adds 1, n=2 i, i is the bit number of DAI signaling.
9, as claim 5 or 6 described detection methods, it is characterized in that,
When L equaled 1, the DAI value that sends to described terminal in the 1st descending sub frame was 2 or 3 or 4; When M equaled 2, the DAI value that sends to described terminal in the 1st, 2 descending sub frame was followed successively by 1,3; When L equaled 3, the DAI value that sends to described terminal in the 1st, 2,3 descending sub frames was followed successively by 1,2,4; When L equaled 4, the DAI value that sends to described terminal in the 1st, 2,3,4 descending sub frames was followed successively by 1,2,3,1 or 1,2,3,2;
Described L is that the number of all descending sub frames of described terminal is given in the resource allocation that has of described sub-frame of uplink correspondence, and the descending sub frame of described terminal is given in the resource allocation that has that described the 1st, 2,3,4 descending sub frames are described sub-frame of uplink correspondence.
10, a kind of terminal detects interrupted method for transmitting, is applied to the long evolving system of TDD mode, and this method comprises:
Terminal is the number of PDCCH channel according to the target physical down control channel of all descending sub frames of a sub-frame of uplink correspondence that receives, by determining that with the base station the corresponding mode of DAI value extrapolates the value of the descending distribution indication DAI that sends to this terminal in each descending sub frame, one by one with the corresponding descending sub frame of actual reception in send to this terminal DAI value relatively, there are the DAI value of reckoning and the unequal situation of value of the actual DAI that receives if any at least one descending sub frame, judge that then resolving supervention penetrates situation.
11, method as claimed in claim 10 is characterized in that:
Described terminal is calculated the value of DAI in the following manner: in all descending sub frames to the described sub-frame of uplink correspondence that receives, except that last descending sub frame, the value that sends to the DAI of this terminal in other descending sub frames equals (M-1) modn+1, and the value that sends to the DAI of this terminal in last descending sub frame is (Mmodn)+1, M is that the number of the descending sub frame of the described sub-frame of uplink correspondence that received before this descending sub frame of described terminal adds 1, n=2 i, i is the bit number of DAI signaling.
12, as claim 10 or 11 described methods, it is characterized in that n=4.
CN2008101673319A 2008-10-20 2008-10-20 Interruption transmission detection method and corresponding down distribution indication method Expired - Fee Related CN101409922B (en)

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