CN101409922B - Interruption transmission detection method and corresponding down distribution indication method - Google Patents

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 1-2i 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 2i, 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 sub-frame 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 types, and 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

Wherein, D representes descending sub frame, and U representes sub-frame of uplink, and S representes 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, RACH), sounding (detection) pilot tone;

(3) the previous subframe of special subframe is fixed for downlink transfer; A back sub-frame of special subframe is fixed for uplink.

In LTE TDD; Subscriber equipment (UE; User Equipment) should in the sub-frame of uplink PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) of subframe n+k (k>3), feed back affirmation information A CK (Acknowledge to the PDSCH among the descending sub frame n (Physical Downlink Shared Channel, Physical Downlink Shared Channel) 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, The subframe sequence number and its corresponding PDCCH channel (Physical Downlink Control Channel of the index of sub-frame of uplink PUCCH through sending downlink data; Physical Downlink Control Channel) the implicit indication of minimum CCE (Control Channel Element, the control channel unit) sequence number at place.

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 that sub-frame of uplink feeding back downlink PDSCH is corresponding.

The descending sub frame number of correspondence during table 2 sub-frame of uplink feedback acknowledgment information

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 (bindings) and multiplexing dual mode, the bundling mode is exactly that the ACK/NACK information of a plurality of descending sub frames is carried out according to streams of code words (transmission block) sequence number and operated that (as long as the corresponding affirmation message of the PDSCH of a descending sub frame is arranged is NACK; Then the result is NACK just; Need to retransmit the PDSCH data of these all descending sub frames of user, having only the corresponding affirmation message of PDSCH of all descending sub frames all is ACK, and the result just is ACK; The PDSCH that representes 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 corresponding affirmation information of the data of in this descending sub frame, transmitting so just can not participate in operating process in, be easy to like this feed back with ACK the affirmation information (DTX should be regarded as NACK) that should feed back NACK as confirmation by mistake; 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 more that high level carries out retransmission process, 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 at terminal; Descending distribution indication) signaling, this signaling is sent at the PDCCH channel.At the corresponding descending sub frame number of this sub-frame of uplink 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 that this DAI denoting signaling sub-frame of uplink is corresponding (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 explained; 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 in subframe numbers is 0 descending sub frame, sends to the DAI signaling at this terminal is 1, and the value that in subframe numbers is 3 descending sub frame, sends to the DAI signaling at this terminal 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 at 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 ofDAIDAI
		0，0	1
0，1	2
		1，0	3

[0024]?

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 confirming the value of DAI signaling, is the circulation value, in these 9 descending sub frames; The 1st, 2,3,4 have resource allocation to give in the descending sub frame at certain terminal, and the value that sends to the DAI signaling at this terminal is 1; 2,3,4, the 5,6; 7,8,9 (if any) has resource allocation to give in the descending sub frame at this terminal, and the value that sends to the DAI signaling at this terminal is 1; 2,3,4,1.

The terminal confirms 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 the terminal can correctly detect the PDCCH channel of this two sub-frame; 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, the terminal can judge that reception is errorless.If previous descending sub frame loss of data this moment, then the 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, ACK/NACK is not sent at the terminal.

But; State in realization in the process of scheme, when a certain sub-frame of uplink corresponding distribute to last descending sub frame loss of data at terminal the time, as above example; The 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, the terminal can't detect descending sub frame and DTX occur.

Summary of the invention

The technical problem that the present invention will solve provides a kind of detection method and corresponding downstream of interrupted emission and distributes indicating means, to solve that corresponding last descending sub frame of distributing to the terminal of sub-frame of uplink is lost 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 at terminal in the corresponding resource allocation that has of a sub-frame of uplink; Except that last descending sub frame; The value that sends to the descending distribution indication DAI at this terminal in other descending sub frames equals (M-1) mod n+1, and the value that sends to the DAI at this terminal in last descending sub frame is 1～2 ⁱIn be not equal to the value of (M-1) mod n+1, M be current descending sub frame and before the resource allocation that has give the sum of the descending sub frame at this terminal, n=2 ⁱ, i is the bit number of DAI signaling;

Said base station is on the PDCCH channel said DAI to be sent to said terminal at the said Physical Downlink Control Channel that has resource allocation to give the descending sub frame at 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 at said terminal in said 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 said terminal in the 1st descending sub frame was 2 or 3 or 4; When L equaled 2, the DAI value that sends to said terminal in the 1st, 2 descending sub frame was followed successively by 1,3; When L equaled 3, the DAI value that sends to said 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 said terminal in the 1st, 2,3,4 descending sub frames was followed successively by 1,2,3,1 or 1,2,3,2;

Said L is that the number of all descending sub frames at said terminal is given in the corresponding resource allocation that has of said sub-frame of uplink, and said the 1st, 2,3,4 descending sub frames are the corresponding resource allocation that has of said sub-frame of uplink and give the descending sub frame at said terminal.

Through technique scheme of the present invention; Make the base station give in the descending sub frame at terminal in the corresponding resource allocation that has of sub-frame of uplink; The value operation method of the DAI of last descending sub frame and other descending sub frames is different; Thereby make the terminal when not receiving the PDCCH channel of last descending sub frame, can correctly detect according to the quantity of the PDCCH channel that has received and DAI value wherein.

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 at terminal in the corresponding resource allocation that has of a sub-frame of uplink; Except that last descending sub frame; The value that sends to the descending distribution indication DAI at this terminal in other descending sub frames equals (M-1) mod n+1, and the value that sends to the DAI at this terminal in last descending sub frame is 1～2 ⁱIn be not equal to the value of (M-1) mod n+1, M be current descending sub frame and before the resource allocation that has give the sum of the descending sub frame at this terminal, n=2 ⁱ, i is the bit number of DAI signaling;

Said base station is on the PDCCH channel said DAI to be sent to said terminal at the said Physical Downlink Control Channel that has resource allocation to give the descending sub frame at terminal;

Said terminal is according to the number of the target P DCCH channel of all corresponding descending sub frames of a sub-frame of uplink that receives; By confirming that with the base station the corresponding mode of DAI value extrapolates the value that sends to the DAI at 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 said 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 at said terminal in said last descending sub frame is (M mod n)+1.

Further, said method also can have following characteristics:

The value of DAI is calculated at said terminal by following mode: in all corresponding descending sub frames of the said sub-frame of uplink that receives, except that last descending sub frame, send to the value U of the DAI at this terminal in other descending sub frames _DAI=(M-1) mod n+1, and send to the value of the DAI at this terminal in last descending sub frame The number of the descending sub frame that the M said sub-frame of uplink that to be said terminal received before current descending sub frame is corresponding 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 said terminal in the 1st descending sub frame was 2 or 3 or 4; When L equaled 2, the DAI value that sends to said terminal in the 1st, 2 descending sub frame was followed successively by 1,3; When L equaled 3, the DAI value that sends to said 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 said terminal in the 1st, 2,3,4 descending sub frames was followed successively by 1,2,3,1 or 1,2,3,2;

Said L is that the number of all descending sub frames at said terminal is given in the corresponding resource allocation that has of said sub-frame of uplink, and said the 1st, 2,3,4 descending sub frames are the corresponding resource allocation that has of said sub-frame of uplink and give the descending sub frame at said terminal.

Through technique scheme of the present invention; Make the base station give in the descending sub frame at terminal in the corresponding resource allocation that has of sub-frame of uplink; The value operation method of the DAI of last descending sub frame and other descending sub frames is different, and the 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, and reduced 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:

The terminal is the number of PDCCH channel according to the target physical down control channel of all corresponding descending sub frames of a sub-frame of uplink that receives; By confirming 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:

The value of DAI is calculated at said terminal by following mode: in all corresponding descending sub frames of the said sub-frame of uplink that receives; Except that last descending sub frame; The value that sends to the DAI at this terminal in other descending sub frames equals (M-1) mod n+1; And the value of DAI that sends to this terminal in last descending sub frame is for (M mod n)+1, and M is that the number of the corresponding descending sub frame of the said sub-frame of uplink that before current descending sub frame, receives of said terminal adds 1, n=2 ⁱ, i is the bit number of DAI signaling.

Through technique scheme of the present invention; The 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 has 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 sketch map 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 accompanying drawing and combine embodiment, specify the present invention.

The method of present embodiment may further comprise the steps:

Step 100, the base station is given in all descending sub frames at terminal in the corresponding resource allocation that has of a sub-frame of uplink, adds the value that 1 result confirms to send in last descending sub frame the DAI at 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 does

Then have $V_{\mathrm{DAI}}^{\mathrm{Last}}=\left(M\mathrm{Mod}n\right)+1,$ The n value is taken as 4.

For there being resource allocation to give non-last descending sub frame in all descending sub frames at terminal, it sends to the value V of the DAI at this terminal _DAIStill can confirm, i.e. V by existing mode _DAI=(M-1) mod n+1, M be in all corresponding descending sub frames of said sub-frame of uplink current descending sub frame and before the resource allocation that has give the sum of the descending sub frame at this terminal, n=2 ⁱ, i is the bit number of DAI signaling.

Step 200, said base station sends to corresponding terminal with DAI on the said PDCCH channel that the descending sub frame that resource allocation gives the terminal arranged, on the resource of distributing, send data to said terminal simultaneously;

Step 300; Said terminal is according to the number of the PDCCH channel of all corresponding descending sub frames of a sub-frame of uplink that receives; By confirming that with the base station the corresponding mode of DAI value extrapolates the value that sends to the DAI at 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; The value with the actual DAI that receives if any at least one descending sub frame is calculated is unequal, and then the DTX situation has taken place terminal judges, not any confirmation of feedback on said sub-frame of uplink.

The terminal can be calculated the value of DAI by following mode: in all corresponding descending sub frames of the said sub-frame of uplink that receives, except that last descending sub frame, send to the value U of the DAI at this terminal in other descending sub frames _DAI=(M-1) mod n+1, and send to the value of the DAI at this terminal in last descending sub frame

The number of the descending sub frame that the M said sub-frame of uplink that to be said terminal received before current descending sub frame is corresponding adds 1, n=2 ⁱ, i is the bit number of DAI signaling.

In addition, consistent like both, the terminal can combine other conditions to do further judgement, 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 be gone 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 at terminal is given in the corresponding resource allocation that has of a sub-frame of uplink.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 confirmed 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 the terminal like this when detecting, take for and correctly receive all PDCCH channels, be judged as by error the DTX situation does not take place less than the PDCCH channel in last descending sub frame.

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 at terminal in all descending sub frames of sub-frame of uplink correspondence is 1, then this has resource allocation to be last descending sub frame for the descending sub frame at terminal, and the value of DAI wherein is calculated as follows:

$V_{\mathrm{DAI}}^{\mathrm{Last}}=\left(1\mathrm{Mod}n\right)+1=2,$ 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 the terminal does not correctly detect the target P DCCH channel on the corresponding downstream subframe, then any confirmation is not sent at the terminal.

Example two

Suppose that having resource allocation to give the descending sub frame number at terminal in corresponding all descending sub frames of a sub-frame of uplink is 2, value that resource allocation gives the DAI that sends to this terminal in the 1st descending sub frame at terminal is then arranged according to computes: V _DAI=(1-1) mod4+1=1.The DAI value that sends to this terminal in last descending sub frame is according to computes: $V_{\mathrm{DAI}}^{\mathrm{Last}}=\left(2\mathrm{Mod}4\right)+1=3$ 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 said descending sub frame sends to the terminal with DAI, and handle by the mode of describing in the above-mentioned steps 300 at the terminal.

Following mask body is discussed several kinds of situation when the terminal detects two target P DCCH channels on the descending sub frame.

Situation 1:

Suppose that the 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 the terminal receives promptly sends to the DAI at this terminal in the 2nd descending sub frame is 3, still, sends to the value of the DAI at this terminal in this descending sub frame that calculate according to the quantity of the PDCCH channel that detects descending sub frame at the terminal $U_{\mathrm{DAI}}^{\mathrm{Last}}=\left(1\mathrm{Mod}n\right)+1=2$ , both are unequal, therefore can know the DTX situation takes place, and any confirmation is not sent at the terminal.

Situation 2:

Suppose that the 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 the terminal receives promptly sends to the DAI at this terminal in the 1st descending sub frame is 1; But; The value that sends to the DAI at this terminal in this descending sub frame according to the quantity reckoning that detects descending sub frame of terminal is 2; Both are unequal, so the terminal can know the DTX situation takes place, and do not send any confirmation.

If the PDCCH channel is not received yet in the descending sub frame in terminal, then do not send any confirmation.

Example three

Suppose; Having resource allocation to give the descending sub frame number at 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 the DAI value that sends to this terminal in last descending sub frame according to computes that the value that sends to the DAI at this terminal in 2 descending sub frames is respectively 1 and 2, the 3:

$V_{\mathrm{DAI}}^{\mathrm{Last}}=\left(3\mathrm{Mod}n\right)+1=4,$ 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 said descending sub frame sends to the terminal with DAI, and handle by the mode of describing in the above-mentioned steps 300 at the terminal.

Following mask body is discussed several kinds of situation when the terminal detects the target P DCCH channel of two descending sub frames.

Situation 1:

Suppose that the 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 at this terminal in 2 descending sub frames of the residue that the terminal receives (promptly having resource to send to the 2nd and the 3rd descending sub frame at this terminal) is respectively 2; 4; But the terminal is 1,3 according to the value of the DAI that the quantity of the PDCCH channel that detects descending sub frame is calculated; Therefore generation DTX situation can be known in the terminal, does not send any confirmation.

Situation 2:

Suppose that the 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 at this terminal in 2 descending sub frames of the residue that the terminal receives (promptly having resource allocation to give the 1st and the 3rd descending sub frame at this terminal) is followed successively by 1; 4; But the value that sends to the DAI at this terminal in these two descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame of terminal is followed successively by 1,3; Therefore generation DTX situation can be known in the terminal, does not send any confirmation.

Situation 3:

Suppose that the 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 at this terminal in 2 descending sub frames of the residue that the terminal receives (promptly having resource allocation to give the 2nd and the 3rd descending sub frame at this terminal) is followed successively by 1; 2; But the value that sends to the DAI at this terminal in these two descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame of terminal is followed successively by 1,3; Therefore generation DTX situation can be known in the terminal, does not send any confirmation.

Example 4

Suppose; Having resource allocation to give the descending sub frame number at terminal in all descending sub frames of one sub-frame of uplink correspondence is 4, then has resource allocation to give the 1st, 2 of terminal; The value that sends to the DAI at this terminal in 3 descending sub frames is respectively 1; The 2,3,4th is the DAI value that sends to this terminal in last descending sub frame according to computes:

$V_{\mathrm{DAI}}^{\mathrm{Last}}=\left(4\mathrm{Mod}n\right)+1=1,$ 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 said descending sub frame sends to the terminal with DAI, and handle by the mode of describing in the above-mentioned steps 300 at the terminal.

Following mask body is discussed several kinds of situation when the terminal detects the target P DCCH channel of two descending sub frames.

Situation 1:

Suppose that the 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 at this terminal in 3 descending sub frames of the residue that the terminal receives (promptly having resource allocation to give the 2nd, 3,4 descending sub frames at this terminal) is followed successively by 2; 3,1, still; The value that sends to the DAI at this terminal in these 3 descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame of terminal is followed successively by 1,2,4; Therefore generation DTX situation can be known in the terminal, does not send any confirmation.

Situation 2:

Suppose that the 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 at this terminal in 3 descending sub frames of the residue that the terminal receives (promptly having resource allocation to give the 1st, 3,4 descending sub frames at this terminal) is followed successively by 1; 3,1, still; The value that sends to the DAI at this terminal in these 3 descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame of terminal is followed successively by 1,2,4; Therefore generation DTX situation can be known in the terminal, does not send any confirmation.

Situation 3:

Suppose that the 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 at this terminal in 3 descending sub frames of the residue that the terminal receives (having resource allocation to give the 1st, 2,4 descending sub frames at this terminal) is followed successively by 1; 2,1, still; The value that sends to the DAI at this terminal in these 3 descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame of terminal is followed successively by 1,2,4; Therefore generation DTX situation can be known in the terminal, does not send any confirmation.

Situation 4:

Suppose that the terminal does not correctly detect the target P DCCH channel of the 4th descending sub frame, then has:

The value that sends to the DAI at this terminal in 3 descending sub frames of the residue that the terminal receives (promptly having resource allocation to give the 2nd, 3,4 descending sub frames at this terminal) is followed successively by 1; 2,3, still; The value that sends to the DAI at this terminal in these 3 descending sub frames according to the quantity reckoning of the PDCCH channel that detects descending sub frame of terminal is followed successively by 1,2,4; Therefore generation DTX situation can be known in the terminal, 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 cause at the terminal of prior art existence 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 the terminal according to the present invention subframe down lost and the DTX faults that causes.

More than only the situation of the PDCCH channel that do not detect 1 descending sub frame has been carried out detailed introduction in each example; Processing method according to the terminal that provides among the embodiment; The terminal also can correctly detect the DTX situation under other most of situation, and the PUCCH channel indexes that combines the back to send ACK/NACK just can realize the correct detection under the various situation.

Obviously, it is apparent to those skilled in the art 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; Can they be stored in the storage device and carry out, 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 by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, 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. 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 at terminal in the corresponding resource allocation that has of a sub-frame of uplink; Except that last descending sub frame; The value that sends to the descending distribution indication DAI at this terminal in other descending sub frames equals (M-1) mod n+1, and the value that sends to the DAI at this terminal in last descending sub frame is 1～2 ⁱIn be not equal to the value of (M-1) mod n+1, M be current descending sub frame and before the resource allocation that has give the sum of the descending sub frame at this terminal, n=2 ⁱ, i is the bit number of DAI signaling;

Said base station is on the PDCCH channel said DAI to be sent to said terminal at the said Physical Downlink Control Channel that has resource allocation to give the descending sub frame at terminal.

2. descending distribution indicating means as claimed in claim 1 is characterized in that n=4.

3. according to claim 1 or claim 2 descending distribution indicating means is characterized in that,

The value that sends to the DAI at said terminal in said last descending sub frame is (M mod n)+1.

4. according to claim 1 or claim 2 descending distribution indicating means is characterized in that,

When L equaled 1, the DAI value that sends to said terminal in the 1st descending sub frame was 2 or 3 or 4; When L equaled 2, the DAI value that sends to said terminal in the 1st, 2 descending sub frame was followed successively by 1,3; When L equaled 3, the DAI value that sends to said 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 said terminal in the 1st, 2,3,4 descending sub frames was followed successively by 1,2,3,1 or 1,2,3,2;

Said L is that the number of all descending sub frames at said terminal is given in the corresponding resource allocation that has of said sub-frame of uplink, and said the 1st, 2,3,4 descending sub frames are the corresponding resource allocation that has of said sub-frame of uplink and give the descending sub frame at said terminal.

5. the detection method of an 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 at terminal in the corresponding resource allocation that has of a sub-frame of uplink; Except that last descending sub frame; The value that sends to the descending distribution indication DAI at this terminal in other descending sub frames equals (M-1) mod n+1, and the value that sends to the DAI at this terminal in last descending sub frame is 1～2 ⁱIn be not equal to the value of (M-1) mod n+1, M be current descending sub frame and before the resource allocation that has give the sum of the descending sub frame at this terminal, n=2 ⁱ, i is the bit number of DAI signaling;

Said base station is on the PDCCH channel said DAI to be sent to said terminal at the said Physical Downlink Control Channel that has resource allocation to give the descending sub frame at terminal;

Said terminal is according to the number of the target P DCCH channel of all corresponding descending sub frames of a sub-frame of uplink that receives; By confirming that with the base station the corresponding mode of DAI value extrapolates the value that sends to the DAI at 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 said sub-frame of uplink.

6. detection method as claimed in claim 5 is characterized in that n=4.

7. like claim 5 or 6 described detection methods, it is characterized in that,

The value that sends to the DAI at said terminal in said last descending sub frame is (M mod n)+1.

8. detection method as claimed in claim 7 is characterized in that,

The value of DAI is calculated at said terminal by following mode: in all corresponding descending sub frames of the said sub-frame of uplink that receives, except that last descending sub frame, send to the value U of the DAI at this terminal in other descending sub frames _DAI=(M-1) mod n+1, and send to the value of the DAI at this terminal in last descending sub frame

The number of the descending sub frame that the M said sub-frame of uplink that to be said terminal received before this descending sub frame is corresponding adds 1, n=2 ⁱ, i is the bit number of DAI signaling.

9. like claim 5 or 6 described detection methods, it is characterized in that,

When L equaled 1, the DAI value that sends to said terminal in the 1st descending sub frame was 2 or 3 or 4; When L equaled 2, the DAI value that sends to said terminal in the 1st, 2 descending sub frame was followed successively by 1,3; When L equaled 3, the DAI value that sends to said 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 said terminal in the 1st, 2,3,4 descending sub frames was followed successively by 1,2,3,1 or 1,2,3,2;

Said L is that the number of all descending sub frames at said terminal is given in the corresponding resource allocation that has of said sub-frame of uplink, and said the 1st, 2,3,4 descending sub frames are the corresponding resource allocation that has of said sub-frame of uplink and give the descending sub frame at said terminal.

10. interrupted method for transmitting is detected at a terminal, is applied to the long evolving system of TDD mode, and this method comprises:

The terminal is the number of PDCCH channel according to the target physical down control channel of all corresponding descending sub frames of a sub-frame of uplink that receives; By confirming 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:

The value of DAI is calculated at said terminal by following mode: in all corresponding descending sub frames of the said sub-frame of uplink that receives; Except that last descending sub frame; The value that sends to the DAI at this terminal in other descending sub frames equals (M-1) mod n+1; And the value of DAI that sends to this terminal in last descending sub frame is for (M mod n)+1, and M is that the number of the corresponding descending sub frame of the said sub-frame of uplink that before current descending sub frame, receives of said terminal adds 1, n=2 ⁱ, i is the bit number of DAI signaling.

12., it is characterized in that n=4 like claim 10 or 11 described methods.

Images