CN101267253B - Confirmation information expression method, UE and base station for DTX detection - Google Patents
Confirmation information expression method, UE and base station for DTX detection Download PDFInfo
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Abstract
The present invention provides a confirmation information presenting method which is used for detecting DTX. The method comprises the following procedures: feeding back an ACK/NACK confirmation information by an UE aiming at each descending sub-frame from the base station, and executing and-operation to these ACK/NACK confirmation information to obtain the and-confirmation information; mapping the number of the descending sub-frame to a corresponding direction by the UE according to a regulation; constructing an ascending sub-frame by the UE and setting the and-confirmation information in the PUCCH of the corresponding position of the ascending sub-frame; and feeding back the ascending sub-frame by the UE to the base station to inform whether an error exists in the receiving of the descending sub-frame to the base station through the corresponding position of PUCCH and the value of the confirmation information. The invention also provides an UE and a base station. The invention guarantees the whole and effective transmission of the descending data.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of confirmation information expressing method, UE and base station for detection of DTX.
Background technology
Fig. 1 shows LTE (Long Term Evolution, Long Term Evolution) system TDD (Time Division Duplex, 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 0.5ms time slot that each field is divided into 10 length, and adjacent two time slots form a subframe that length is 1ms.In a field, comprise 5 subframes.For Normal CP (Normal Cyclic Prefix, standard cyclic prefix), a time slot comprises the symbol that 7 length are 66.7 μ s, and wherein the CP length of first symbol is 5.21 μ s, and 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 feature of subframe is:
(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, in Table 1.All subframes are all divided into three classes, the one, descending sub frame; The one, special subframe; The one, sub-frame of uplink; As configure at 1 o'clock, and subframe 2,3,7,8 for uplink, subframe 0,4,5,9 for downlink transfer, and subframe 1,6 is special subframe simultaneously.
(2) special subframe comprises 3 special time slots; respectively DwPTS (DownlinkPilot Time Slot, descending pilot frequency time slot), GP (Guard Period, protection interval) and UpPTS (Uplink Pilot Time Slot; uplink pilot time slot), wherein:
1. DwPTS is for descending, and a minimum symbol is used for transmitting P-SCH (Primary-Synchronization Channel, primary synchronization channel);
2. GP, for protection interval, does not transmit any data; And
3. UpPTS, can be for signals such as transmission RACH (Random AccessChannel, Random Access Channel), sounding (detection) pilot tones for up; And
(3) the previous subframe of special subframe is fixed for downlink transfer; A rear subframe of special subframe is fixed for uplink.
Table 1 LTE TDD up-downgoing proportional arrangement
DL/UL is than transfer point subframe numbers
Routine configuration cycle 0123456789
0 5ms D S U U U D S U U U
1 5ms D S U U D D S U U D
2 5ms D S U D D D S U D D
3 10ms D S U U U D D D D D
4 10ms D S U U D D D D D D
5 10ms D S U D D D D D D D
6 10ms D S U U U D S U U D
Wherein, D represents descending sub frame, and U represents sub-frame of uplink, and S represents special subframe.
Corresponding descending sub frame number during table 2 sub-frame of uplink feedback acknowledgment information
DL/UL is than all subframe numbers of transfer point
The example configuration phase 0123456789
0 - - 1 - 1 - - 1 - 1
1 5ms - - 2 1 - - - 2 1 -
2 - - 4 - - - - 4 - -
3 - - 3 2 2 - - - - -
4 10ms - - 4 4 - - - - - -
5 - - 9 - - - - - - -
6 - - 1 1 1 - - 1 1 -
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) in, feed back (the PhysicalDownlink Shared Channel to the PDSCH in descending sub frame n, Physical Downlink Shared Channel) the confirmation information A CK (Acknowledge of data, correctly reply)/NACK (Non-Acknowledge, wrong responses).Also can in this sub-frame of uplink, in the PUSCH (PhysicalUplink Shared Channel, Physical Uplink Shared Channel) for transmitting uplink data, feed back this confirmation ACK/NACK.Wherein, the index of sub-frame of uplink PUCCH is by sending subframe sequence number and its corresponding PDCCH (Physical Downlink Control Channel of 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, sub-frame of uplink need to feed back the ACK/NACK information (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) of a plurality of PDSCH subframes.Because LTE is up, single-carrier property need to be met, so feed back the ACK/NACK information of a plurality of descending PDSCH subframes in a sub-frame of uplink, single-carrier property must be met.A kind of method is exactly that it (is NACK as long as there is the acknowledge message that the PDSCH of a descending sub frame is corresponding that the ACK/NACK information of a plurality of descending sub frames is carried out with operation, result is just NACK, need to retransmit the PDSCH data of all descending sub frames of this user, only having the acknowledge message corresponding to PDSCH of all descending sub frames is all ACK, result is just ACK, represents that the PDSCH of all descending sub frames receives correct), then, return to an ACK/NACK information, i.e. the above-mentioned result with operating.
In realizing process of the present invention, inventor finds when adopting said method, if UE does not correctly detect while belonging to control channel PDCCH corresponding to its descending sub frame, UE just can feeding back ACK/nack message, there is DTX (DiscontinuousTransmission, interrupted transmitting) situation, confirmation corresponding to data of transmitting in this descending sub frame so just can not participate in operating process in, being easy to that like this confirmation (DTX should the be considered as NACK) mistake that should feed back NACK is usingd to ACK feeds back as confirmation, result just there will be the situation of this descending sub frame loss of data of this user, 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.
Summary of the invention
The present invention aims to provide a kind of confirmation information expressing method, UE and base station for detection of DTX, to solve the problem of downlink data mistake.
In an embodiment of the present invention, a kind of confirmation information expressing method for detection of DTX is provided, comprise the following steps: UE is for each the descending sub frame feeding back ACK/NACK confirmation from base station, and these ACK/NACK confirmations are carried out and operation, to obtain and confirmation; UE is mapped to relevant position according to rule by the number of descending sub frame; UE constructs sub-frame of uplink, will be arranged in the PUCCH of relevant position in sub-frame of uplink with confirmation; UE, to base station feedback sub-frame of uplink, has inerrancy with the relevant position by PUCCH with the value of confirmation to base station notice oneself reception descending sub frame.
Preferably, also comprise: the number of the descending sub frame that base station sends it according to rule is mapped to desired locations; Base station attempts detecting and confirmation in the PUCCH of desired locations in sub-frame of uplink; If detect with confirmation or detect with confirmation, be not NACK, judge that its descending sub frame sending is wrong; If detect with confirmation and with confirmation be ACK, judge the descending sub frame inerrancy that it sends.
Preferably, rule specifically comprises: set up set, its element is the number of the descending sub frame that likely receives, and is sorted; During mapping, the number of descending sub frame is retrieved in set, obtained its element sequence number in set; According to element sequence number, be that odd number or even number are mapped to relevant position.
Preferably, according to element sequence number, be that odd number or even number are mapped to relevant position and specifically comprise:
Element sequence number is odd number, is mapped to the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink; Element sequence number is even number, is mapped to the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink; Or
Element sequence number is odd number, is mapped to the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink; Element sequence number is even number, is mapped to the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink.
Preferably, set is { 1,2,3,4}, the number of descending sub frame is 1 or 3 o'clock, and element sequence number is odd number, according to element sequence number, is that odd number or even number are mapped to relevant position and specifically comprise: the PUCCH of last that is mapped to that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink or the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place; The number of descending sub frame is 2 or 4 o'clock, element sequence number is even number, according to element sequence number, is that odd number or even number are mapped to relevant position and specifically comprise: the PUCCH of the implicit indication of minimum CCE sequence number at first that is mapped to that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink or the corresponding PDCCH of last descending sub frame place.
Preferably, for 5ms periodic conversion point, set is { 1,2} or the { subset of 1,2,3,4}.
Preferably, for 10ms periodic conversion point, set is { 1,2,3}, { 1,2,3,4} or the { subset of 1,2,3,4,5,6,7,8,9}.
In an embodiment of the present invention, also provide a kind of UE, having comprised: with module, for each the descending sub frame feeding back ACK/NACK confirmation for from base station, and these ACK/NACK confirmations have been carried out and operation, to obtain and confirmation; Mapping block, for being mapped to relevant position according to rule by the number of descending sub frame; Constructing module, for constructing sub-frame of uplink, will be arranged in the PUCCH of relevant position in sub-frame of uplink with confirmation; Feedback module, for to base station feedback sub-frame of uplink, has inerrancy with the relevant position by PUCCH with the value of confirmation to base station notice oneself reception descending sub frame.
Preferably, rule specifically comprises: set up set, its element is the number of the descending sub frame that likely receives, and is sorted; During mapping, the number of descending sub frame is retrieved in set, obtained its element sequence number in set; According to element sequence number, be that odd number or even number are mapped to relevant position.
In an embodiment of the present invention, also provide a kind of base station, having comprised: mapping block, has been mapped to desired locations for the number of the descending sub frame that it sent according to rule; Detection module, detects and confirmation in the PUCCH of sub-frame of uplink desired locations for attempting; Judge module, if be not NACK, judge that its descending sub frame sending is wrong for detecting with confirmation or detecting with confirmation; If detect with confirmation and with confirmation be ACK, judge the descending sub frame inerrancy that it sends.
Preferably, rule specifically comprises: set up set, its element is the number of the descending sub frame that likely receives, and is sorted; During mapping, the number of descending sub frame is retrieved in set, obtained its element sequence number in set; According to element sequence number, be that odd number or even number are mapped to relevant position.
Above embodiment, because adopted the position of sub-frame of uplink to help to express confirmation, represents that confirmation may exist the problem of DTX so overcome, and then has reached the effect that guarantees the complete effective transmission of downlink data.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation 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 according to the flow chart of the confirmation information expressing method for detection of DTX of the embodiment of the present invention;
Fig. 3 show the ACK/NACK confirmation corresponding according to the UE side feeding back downlink subframe of the embodiment of the present invention (through with operation after confirmation) schematic diagram of treaty rule of PUCCH index at place;
Fig. 4 shows according to the block diagram of the UE of the embodiment of the present invention;
Fig. 5 shows according to the block diagram of the base station of the embodiment of the present invention;
The schematic diagram of the timing relationship of ascending-descending subframes during configuration 4 that it is above-mentioned table 1 that Fig. 6 shows according to the up-downgoing proportional arrangement of the embodiment of the present invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 2 shows according to the flow chart of the confirmation information expressing method for detection of DTX of the embodiment of the present invention, comprises the following steps:
Step S10, UE is for each the descending sub frame feeding back ACK/NACK confirmation from base station, and these ACK/NACK confirmations are carried out and operation, to obtain and confirmation;
Step S20, UE is mapped to relevant position according to rule by the number of descending sub frame;
Step S30, UE constructs sub-frame of uplink, will be arranged in the PUCCH of relevant position in sub-frame of uplink with confirmation;
Step S40, UE, to base station feedback sub-frame of uplink, has inerrancy with the relevant position by PUCCH with the value of confirmation to base station notice oneself reception descending sub frame.
In the method, the relevant position that UE is mapped to by the number of UE descending sub frame to the position of the above-mentioned single confirmation of base station feedback is determined.This embodiment, because adopted the position of sub-frame of uplink to help to express confirmation, represents that confirmation may exist the problem of DTX so overcome, and then has reached the effect that guarantees the complete effective transmission of downlink data.
Preferably, the method also comprises: the number of the descending sub frame that base station sends it according to rule is mapped to desired locations; Base station attempts detecting and confirmation in the PUCCH of desired locations in sub-frame of uplink; If detect with confirmation or detect with confirmation, be not NACK, judge that its descending sub frame sending is wrong; If detect with confirmation and with confirmation be ACK, judge that its descending sub frame sending is without loss.This has realized the detection of base station side.
Preferably, rule specifically comprises: set up set, its element is the number of the descending sub frame that likely receives, and is sorted; During mapping, the number of descending sub frame is retrieved in set, obtained its element sequence number in set; According to element sequence number, be that odd number or even number are mapped to relevant position.
Preferably, according to element sequence number, be that odd number or even number are mapped to relevant position and specifically comprise:
Element sequence number is odd number, is mapped to the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink; Element sequence number is even number, is mapped to the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink;
Or element sequence number is odd number, be mapped to the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink; Element sequence number is even number, is mapped to the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink.
Preferably, set is { 1,2,3,4}, the number of descending sub frame is 1 or 3 o'clock, and element sequence number is odd number, according to element sequence number, is that odd number or even number are mapped to relevant position and specifically comprise: the PUCCH of last that is mapped to that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink or the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place; The number of descending sub frame is 2 or 4 o'clock, element sequence number is even number, according to element sequence number, is that odd number or even number are mapped to relevant position and specifically comprise: the PUCCH of the implicit indication of minimum CCE sequence number at first that is mapped to that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink or the corresponding PDCCH of last descending sub frame place.
Preferably, for 5ms periodic conversion point, set is { 1,2} or the { subset of 1,2,3,4}.
Preferably, for 10ms periodic conversion point, set is { 1,2,3}, { 1,2,3,4} or the { subset of 1,2,3,4,5,6,7,8,9}.
In the control channel of row physically that can detect DTX that above embodiment provides, send confirmation ACK (Acknowledge, confirm) and NACK (Non-Acknowledge, deny) method and detection method thereof, can solve the problem of downlink data mistake, thereby minimizing time delay, the performance of assurance system.
Fig. 4 shows according to the block diagram of the UE of the embodiment of the present invention, comprising:
With module 410, for each the descending sub frame feeding back ACK/NACK confirmation for from base station, and these ACK/NACK confirmations are carried out and operation, to obtain and confirmation;
Constructing module 430, for constructing sub-frame of uplink, will be arranged in the PUCCH of relevant position in sub-frame of uplink with confirmation;
Preferably, rule specifically comprises: set up set, its element is the number of the descending sub frame that likely receives, and is sorted; During mapping, the number of descending sub frame is retrieved in set, obtained its element sequence number in set; According to element sequence number, be that odd number or even number are mapped to relevant position.Concrete rule is described in detail above, repeats no more here.
This UE chooses a plurality of descending sub frames corresponding to different PUCCH index feedbacks through the ACK/NACK confirmation with operation according to the rule of agreement in sub-frame of uplink, the situation when rule of agreement has been considered UE DTX here, so overcome, represent that confirmation may exist the problem of DTX, and then reached the effect that guarantees the complete effective transmission of downlink data.
Fig. 5 shows according to the block diagram of the base station of the embodiment of the present invention, comprising:
Preferably, rule specifically comprises: set up set, its element is the number of the descending sub frame that likely receives, and is sorted; During mapping, the number of descending sub frame is retrieved in set, obtained its element sequence number in set; According to element sequence number, be that odd number or even number are mapped to relevant position.Concrete rule is described in detail above, repeats no more here.
The ACK/NACK information of descending sub frame is detected in this base station on target P UCCH according to the selection rule (identical with the rule of UE side) of agreement, if corresponding ACK/NACK information do not detected, downlink data mistake is described, be considered as NACK confirmation, need to retransmit, if corresponding ACK/NACK information detected, according to the result of the ACK/NACK information detecting, judge whether to need to retransmit.Therefore, this base station has overcome expression confirmation may there is the problem of DTX, and then has reached the effect that guarantees the complete effective transmission of downlink data.
Below by introducing in detail for example this rule.
ACK/NACK confirmation corresponding to UE side feeding back downlink subframe (through with operation after confirmation) treaty rule (base station side detects and also follows this rule) of PUCCH index at place is as follows:
According to the configuration of LTE TDD and other constraintss, determine that descending sub frame manifold corresponding to confirmation of feeding back close K in a sub-frame of uplink, as K={1,2,3,4} is illustrated in can have 1 or 2 or 3 or 4 confirmations corresponding to descending sub frame transmit in this sub-frame of uplink in a sub-frame of uplink; Element in set K is pressed to order sequence from big to small or from small to large;
Odd number element in the set K of regulation after sequence correspond to feeding back ACK/NACK acknowledge message on the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place that this UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink (through and the acknowledge message of operation), the even number element in the set K of regulation after sequence correspond to feeding back ACK/NACK acknowledge message on the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame place that this UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink (through and the acknowledge message of operation).
Or contrary, the odd number element in the set K of regulation after sequence correspond to feeding back ACK/NACK acknowledge message on the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame place that this UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink (through and the acknowledge message of operation), even number element in the set K of regulation after sequence correspond to feeding back ACK/NACK acknowledge message on the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place that this UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink (through and the acknowledge message of operation), as shown in Figure 3:
For example, work as K={1, during 2,3,4}, (sequenced order):
When UE receives four descending sub frame data, and determine while need to feed back the acknowledge message of these four descending sub frame data in a sub-frame of uplink the upper feeding back ACK/nack message of PUCCH of the implicit indication of minimum CCE sequence number at last (or first) the corresponding PDCCH of descending sub frame data place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink;
When UE receives three descending sub frame data, and determine while need to feed back the acknowledge message of these three descending sub frame data in a sub-frame of uplink the upper feeding back ACK/nack message of PUCCH of the implicit indication of minimum CCE sequence number at first (or last) the corresponding PDCCH of descending sub frame data place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink;
When UE receives two descending sub frame data, and determine while need to feed back the acknowledge message of these two descending sub frame data in a sub-frame of uplink the upper feeding back ACK/nack message of PUCCH of the implicit indication of minimum CCE sequence number at last (or first) the corresponding PDCCH of descending sub frame data place that UE receives according to UE in descending sub frame corresponding to this sub-frame of uplink;
When UE receives descending sub frame data, and determine in the time of need to feeding back the acknowledge message of these descending sub frame data in a sub-frame of uplink, UE is feeding back ACK/nack message on the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of these descending sub frame data place receiving.
Known when the confirmation of certain UE is detected in base station in sub-frame of uplink have the acknowledge message of how many descending sub frame data to feed back in this sub-frame of uplink, and the also sequence number of known these descending sub frames.
Supposing that base station is known has the acknowledge message of four descending sub frame data to launch in this sub-frame of uplink, the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last (or first) the descending sub frame data place of distributing to this UE in descending sub frame corresponding to this sub-frame of uplink need to be detected in base station, if ACK/NACK do not detected, think DTX, being used as NACK processes, if ACK/NACK detected, according to the ACK/NACK detecting, judge whether to need to retransmit;
Supposing that base station is known has the acknowledge message of three descending sub frame data to launch in this sub-frame of uplink, the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first (or last) the descending sub frame data place of distributing to this UE in descending sub frame corresponding to this sub-frame of uplink need to be detected in base station, if ACK/NACK do not detected, think DTX, being used as NACK processes, if ACK/NACK detected, according to the ACK/NACK detecting, judge whether to need to retransmit;
Supposing that base station is known has the acknowledge message of two descending sub frame data to launch in this sub-frame of uplink, the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last (or first) the descending sub frame data place of distributing to this UE in descending sub frame corresponding to this sub-frame of uplink need to be detected in base station, if ACK/NACK do not detected, think DTX, being used as NACK processes, if ACK/NACK detected, according to the ACK/NACK detecting, judge whether to need to retransmit;
Supposing that base station is known has the acknowledge message of descending sub frame data to launch in this sub-frame of uplink, the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of these descending sub frame data place of distributing to this UE in descending sub frame corresponding to this sub-frame of uplink need to be detected in base station, if ACK/NACK do not detected, think DTX, being used as NACK processes, if ACK/NACK detected, according to the ACK/NACK detecting, judge whether to need to retransmit;
The element that descending sub frame manifold corresponding to confirmation of feeding back in sub-frame of uplink closed in K can be selected according to up-downgoing proportional arrangement, as:
5ms periodic conversion point
10ms periodic conversion point
In the control channel of row physically that can detect DTX of this embodiment design, send confirmation ACK (Acknowledge, correctly reply) and NACK (Non-Acknowledge, wrong responses) method and detection method thereof can solve the problem of downlink data mistake, thereby minimizing time delay, the performance of assurance system, can effectively improve feedback efficiency and system works efficiency.
The LTE TDD system of take is example, suppose, continuous 20 subframes, when up-downgoing proportional arrangement is the configuration 4 of above-mentioned table 1, subframe 0, subframe 1, subframe 4, subframe 5, subframe 6, subframe 7, subframe 8, subframe 9, subframe 10, subframe 11, subframe 14, subframe 15, subframe 16, subframe 17, subframe 18, subframe 19 is descending sub frame, subframe 2, subframe 3, subframe 12, subframe 13 is sub-frame of uplink, according to up-downgoing timing relationship, subframe 0, 1, 4, 5 ACK/NACK is in subframe 12 feedbacks, subframe 6, 7, 8, 9 ACK/NACK is in subframe 13 feedbacks, as shown in Figure 6,
Obviously K={1 now, 2,3,4};
Suppose that base station sends data to object UE on descending sub frame 6,7,8,9:
When UE receives descending sub frame data, if do not detect the PDCCH of subframe 4, the data in subframe 4 make a mistake, and the data of other subframes normally receive; Because UE receives the data of three subframes, therefore, UE is at the upper feeding back ACK/nack message of the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame receiving (subframe 6) data place;
In base station side, because base station is known, having 4 descending sub frames has data to send to object UE, so base station is in the upper ACK/NACK information that detects of the PUCCH of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame (subframe 9) place sending; Because UE does not send ACK/NACK on this channel, so base station detects DTX, and base station can be processed according to NACK mode.
Above embodiment, because adopted the position of sub-frame of uplink to help to express confirmation, represents that confirmation may exist the problem of DTX so overcome, and then has reached the effect that guarantees the complete effective transmission of downlink data.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. for detection of a confirmation information expressing method of DTX, it is characterized in that, comprise the following steps:
Subscriber equipment is for each the descending sub frame feeding back ACK/NACK confirmation from base station, and these ACK/NACK confirmations are carried out and operation, to obtain and confirmation;
Described subscriber equipment is mapped to relevant position according to rule by the number of described descending sub frame;
Described subscriber equipment structure sub-frame of uplink, is arranged in the Physical Uplink Control Channel of relevant position described in described sub-frame of uplink with confirmation described;
Described subscriber equipment, to sub-frame of uplink described in described base station feedback, notifies the described descending sub frame of oneself reception to have inerrancy with the value of the described relevant position by described Physical Uplink Control Channel and described and confirmation to described base station.
2. confirmation method for expressing according to claim 1, is characterized in that, also comprises:
The number of the described descending sub frame that described base station sends it according to described rule is mapped to desired locations;
Described and confirmation are attempted detecting in the Physical Uplink Control Channel of relevant position described in described sub-frame of uplink in described base station;
If described and confirmation not detected or described and confirmation being detected is NACK, judge that its described descending sub frame sending is wrong;
If described and confirmation and described and confirmation being detected is ACK, judge the described descending sub frame inerrancy that it sends.
3. according to the confirmation information expressing method described in claim 1 or 2, it is characterized in that, described rule specifically comprises:
Set up set, its element is the number of the descending sub frame that likely receives, and is sorted;
During mapping, the number of described descending sub frame is retrieved in described set, obtained its element sequence number in described set;
According to described element sequence number, be that odd number or even number are mapped to described relevant position.
4. confirmation method for expressing according to claim 3, is characterized in that, according to described element sequence number, is that odd number or even number are mapped to described relevant position and specifically comprise:
Described element sequence number is odd number, is mapped to the Physical Uplink Control Channel of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame place that described subscriber equipment receives according to subscriber equipment in descending sub frame corresponding to this sub-frame of uplink; Described element sequence number is even number, is mapped to the Physical Uplink Control Channel of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place that described subscriber equipment receives according to subscriber equipment in descending sub frame corresponding to this sub-frame of uplink; Or
Described element sequence number is odd number, is mapped to the Physical Uplink Control Channel of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place that described subscriber equipment receives according to subscriber equipment in descending sub frame corresponding to this sub-frame of uplink; Described element sequence number is even number, is mapped to the Physical Uplink Control Channel of the implicit indication of minimum CCE sequence number at the corresponding PDCCH of last descending sub frame place that described subscriber equipment receives according to subscriber equipment in descending sub frame corresponding to this sub-frame of uplink.
5. confirmation method for expressing according to claim 4, it is characterized in that, described set is { 1,2,3,4}, the number of described descending sub frame is 1 or 3 o'clock, described element sequence number is odd number, according to described element sequence number, is that odd number or even number are mapped to described relevant position and specifically comprise: the Physical Uplink Control Channel of last that is mapped to that described subscriber equipment receives according to subscriber equipment in descending sub frame corresponding to this sub-frame of uplink or the implicit indication of minimum CCE sequence number at the corresponding PDCCH of first descending sub frame place; The number of described descending sub frame is 2 or 4 o'clock, described element sequence number is even number, according to described element sequence number, is that odd number or even number are mapped to described relevant position and specifically comprise: the Physical Uplink Control Channel of the implicit indication of minimum CCE sequence number at first that is mapped to that described subscriber equipment receives according to subscriber equipment in descending sub frame corresponding to this sub-frame of uplink or the corresponding PDCCH of last descending sub frame place.
6. confirmation method for expressing according to claim 4, is characterized in that, for 5ms periodic conversion point, described set is { subset of 1,2} or the { subset of 1,2,3,4}.
7. confirmation method for expressing according to claim 4, is characterized in that, for 10ms periodic conversion point, described set is { subset of 1,2,3}, { subset of 1,2,3,4} or the { subset of 1,2,3,4,5,6,7,8,9}.
8. a subscriber equipment, is characterized in that, comprising:
With module, for each the descending sub frame feeding back ACK/NACK confirmation for from base station, and these ACK/NACK confirmations are carried out and operation, to obtain and confirmation;
Mapping block, for being mapped to relevant position according to rule by the number of described descending sub frame;
Constructing module, for constructing sub-frame of uplink, is arranged in the Physical Uplink Control Channel of relevant position described in described sub-frame of uplink with confirmation described;
Feedback module, for to sub-frame of uplink described in described base station feedback, notifies the described descending sub frame of oneself reception to have inerrancy with the value of the described relevant position by described Physical Uplink Control Channel and described and confirmation to described base station.
9. subscriber equipment according to claim 8, is characterized in that, described rule specifically comprises:
Set up set, its element is the number of the descending sub frame that likely receives, and is sorted;
During mapping, the number of described descending sub frame is retrieved in described set, obtained its element sequence number in described set;
According to described element sequence number, be that odd number or even number are mapped to described relevant position.
10. a base station, is characterized in that, comprising:
Mapping block, is mapped to desired locations for the number of the descending sub frame that it sent according to rule;
Detection module, detects and confirmation for attempting the Physical Uplink Control Channel of desired locations described in sub-frame of uplink;
Judge module, if be NACK for described and confirmation not detected or described and confirmation being detected, judges that its described descending sub frame sending is wrong; If described and confirmation and described and confirmation being detected is ACK, judge the described descending sub frame inerrancy that it sends.
11. base stations according to claim 10, is characterized in that, described rule specifically comprises:
Set up set, its element is the number of the descending sub frame that likely receives, and is sorted;
During mapping, the number of described descending sub frame is retrieved in described set, obtained its element sequence number in described set;
According to described element sequence number, be that odd number or even number are mapped to described desired locations.
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| CN101753198B (en) * | 2008-12-08 | 2013-04-17 | 华为技术有限公司 | Communication method, relay and communication system |
| EP2445249A4 (en) | 2009-06-19 | 2017-06-28 | Sun Patent Trust | Terminal device and retransmission control method |
| CN101951684B (en) * | 2010-09-30 | 2015-08-12 | 中兴通讯股份有限公司 | A kind of sending method of confirmation and user terminal |
| CN101989897B (en) * | 2010-11-15 | 2015-10-21 | 中兴通讯股份有限公司 | Confirmation feedback method and terminal |
| CN107404365B (en) * | 2016-05-20 | 2022-08-19 | 中兴通讯股份有限公司 | Method and device for sending and receiving control information |
| WO2017197850A1 (en) * | 2016-05-20 | 2017-11-23 | 中兴通讯股份有限公司 | Methods and apparatuses for sending and receiving control information, and storage medium |
| CN106792880B (en) | 2016-12-28 | 2020-01-10 | 北京小米移动软件有限公司 | Method and device for transmitting downlink data |
| CN110225596B (en) * | 2019-05-29 | 2022-05-24 | 成都中科微信息技术研究院有限公司 | Scheduling method and system combining PUCCH period |
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