CN101488832B - Channel detecting and processing method, terminal and base station - Google Patents
Channel detecting and processing method, terminal and base station Download PDFInfo
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Abstract
The present invention provides a channel detecting and processing method, terminal and base station, wherein, the channel detecting method comprises that: the terminal acquires index information from the base station, wherein, the index information is preset by the base station for indicating downlink component carrier wave numbers occupied by the PDSCH for the terminal scheduling in the downlink chain; the terminal detects the corresponding PDSCH on the downlink component carrier wave, the detected downlink component carrier wave numbers and the downlink component carrier wave numbers indicated by the index information are compared; if the detected downlink component carrier wave numbers are not equal to the downlink component carrier wave numbers indicated by the index information, so that the terminal can not feedback the reply message. According to the invention, the loss of the transmission data can be avoided, and the transmission quality of the communication system can be improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of Channel Detection and processing method, terminal, base station.
Background technology
At IMT-Advanced (International MobileTelecommunications-Advanced, referred to as IMT-Advanced) in system, can realize the high-speed transfer of data, and has a larger power system capacity, in the situation that low speed moves, focus covers, the peak rate of IMT-Advanced system can reach 1Gbit/s, in the situation that high-speed mobile, wide area cover, the peak rate of IMT-Advanced system can reach 100Mbit/s.
In order to satisfy (the International TelecommunicationUnion-Advanced of senior International Telecommunications Union, referred to as ITU-Advanced) requirement, as Long Term Evolution (Long Term Evolution, referred to as LTE) senior Long Term Evolution (the Long Term Evolution Advanced of evolution standard, referred to as LTE-Advanced) system need to support larger system bandwidth (reaching as high as 100MHz), and need the existing standard of backward compatibility LTE.On the basis of existing LTE system, the bandwidth of LTE system can be merged to obtain larger bandwidth, this technology is called carrier aggregation (carrieraggregation, referred to as CA) technology, the availability of frequency spectrum, alleviation frequency spectrum resource that this technology can improve the IMT-Advance system are in short supply, and then optimize the utilization of frequency spectrum resource.
After the LTE-Advance system adopts carrier aggregation technology, can come transmitting downlink data by a plurality of downlink component carriers of dynamic dispatching (component carrier), wherein, each downlink component carrier can carry Physical Downlink Shared Channel (Physical Downlink SharedChannel, referred to as PDSCH) and Physical Downlink Control Channel (Physical DownlinkControl Channel, referred to as PDCCH), PDSCH and PDCCH are corresponding one by one.Wherein, PDSCH is used for carrying the downlink data that the base station sends to the user; PDCCH is used for carrying and resolves the needed configuration information of this downlink data.For each downlink component carrier, in data transmission procedure, the base station can be carried on downlink data and the configuration information corresponding with this downlink data in PDSCH and PDCCH respectively and send to the user, and the user detects downlink data in PDSCH by reading configuration information in PDCCH.If the configuration information on certain PDCCH is lost, terminal can not read the downlink data on PDSCH corresponding to this PDCCH, can not feed back mixed automatic retransfer request (HybridAutomatic Repeat Request is referred to as HARQ) information yet.
in actual mechanical process, in order to improve system's coverage rate, the user can be by carrying out logical AND (AND) operation to a plurality of HARQ information, namely, the HARQ-ACK information that PDSCH on a plurality of downlink component carriers is corresponding is bound (Bundling), feedback information after binding is returned at predetermined Physical Uplink Control Channel (PhysicalDownlink Control Channel, referred to as PUCCH) on, PDSCH's on PUCCH that should be predetermined and downlink component carrier is corresponding, in addition, should predetermined PUCCH be consensus by base station and terminal, the base station is detected this predetermined PUCCH, just can know that terminal detects the situation of PDSCH.if the configuration information in PDCCH corresponding to the PDSCH on certain downlink component carrier is lost, UE can not detect the downlink data on this PDSCH, correspondingly, do not have feedback information yet, will produce like this a problem: if terminal to the detection of the PDSCH on other downlink component carriers be all correct (be that each HARQ information is ACK (Acknowledgement, correctly reply), pass through after these feedback informations Bundling, UE will feeding back ACK message to predetermined PUCCH, and the base station is ACK message due to what detect, think that terminal has correctly detected all PDSCH, and can the downlink data of losing on downlink component carrier not retransmitted, thereby cause the loss of corresponding data, affected significantly the transmission quality of communication system.
Summary of the invention
Can't correctly feed back whether to have detected the problem that corresponding data that the base station causes to whole PDSCH of its configuration is lost for above-mentioned UE, for this reason, the present invention aims to provide a kind of improved Channel Detection and processing scheme, one of to address the above problem at least.
To achieve these goals, according to an aspect of the present invention, a kind of channel detection method is provided, being applied to terminal is that PDSCH detects to Physical Downlink Shared Channel, wherein, the terminal basis Physical Downlink Control Channel corresponding with PDSCH is that the configuration information in PDCCH detects PDSCH, the upper carrying of PDSCH current data.
Channel detection method according to the present invention comprises: terminal is obtained the index information from the base station, and wherein, index information is set in advance by the base station, is used to indicate in down link the number for the shared downlink component carrier of the PDSCH of terminal scheduling; Terminal detects the PDSCH on corresponding downlink component carrier according to configuration information, and the number of the downlink component carrier of the number of the downlink component carrier that detects and index information indication is compared; If the number of the downlink component carrier that detects is not equal to the number of the downlink component carrier of index information indication, terminal feeding back response information not.
Wherein, index information is carried at and sends to terminal in configuration information.
And, the bit number N that index information takies
DAIDetermined by following formula, that is,
Wherein, N is the downlink component carrier number in system, and N is the natural number more than or equal to 1,
Represent to round up operation.
Preferably, index information takies 2 bits.
In addition, if the number of the downlink component carrier that detects equals the number of the downlink component carrier of index information indication, and the data that the PDSCH on each downlink component carrier that detects carries all detect correctly, terminal correct response message of feedback on predetermined PUCCH.
If the number of the downlink component carrier that detects equals the downlink component carrier number of index information indication, and the data that the PDSCH on the downlink component carrier that detects carries all do not detect correct, terminal feedback error response message on predetermined PUCCH.
Further, response message is detected in the base station on predetermined PUCCH, if any response message do not detected or error response message detected, the base station resends current data; If correct response message detected, the base station sends other data.
To achieve these goals, according to a further aspect in the invention, provide a kind of processing method of Channel Detection.
Comprise according to the processing method of Channel Detection of the present invention: the base station arranges index information, and index information is sent to terminal, wherein, index information is used to indicate and is the number of the shared downlink component carrier of the PDSCH of terminal scheduling in down link, and the upper carrying of PDSCH need to send to the current data of terminal; The base station is detected predetermined PUCCH, if response message do not detected on predetermined PUCCH, resends current data.
In addition, if the response message that the base station detects on predetermined PUCCH is correct response message, the base station sends other data; If the response message that the base station detects on predetermined PUCCH is error response message, the base station resends current data.
To achieve these goals, according to another aspect of the invention, provide a kind of base station.
Base station according to the present invention comprises: module is set, is used for index information is set, wherein, index information is used to indicate in down link the number for the shared downlink component carrier of the PDSCH of terminal scheduling; The first sending module sends to terminal for the index information that the module setting will be set.
Preferably, above-mentioned base station also comprises: the second sending module, be used for sending current data to terminal, and wherein, current data is carried on PDSCH; Detection module is used for predetermined PUCCH is detected; Scheduler module is used for response message not detected in the situation that the response message that detection module detects is error response message or detection module, and scheduling the second sending module resends current data; In the situation that the response message that detection module detects is correct response message, scheduling the second sending module sends new data.
To achieve these goals, according to also one side of the present invention, provide a kind of terminal.
Terminal according to the present invention comprises: receiver module, for the configuration information of the PDCCH that receives the base station transmission and the index information of base station setting, wherein, index information is used to indicate in down link the number for the shared downlink component carrier of the PDSCH of terminal scheduling; Detection module is used for according to the configuration information that receiver module receives, the PDSCH on the corresponding downlink component carrier of PDCCH being detected; Comparison module, the number that is used for the downlink component carrier that will detect compares with the number of the downlink component carrier that index information is indicated; Responder module is used for feeding back response information to predetermined PUCCH.
Preferably, above-mentioned terminal also comprises: control module, be used for the comparative result scheduling responder module according to comparison module, in the situation that the number that the result of comparison module is the downlink component carrier that detects equals the number of the downlink component carrier of index information indication, if the data that the whole PDSCH that detect carry all detect correctly, dispatch the correct response message of responder module feedback, otherwise, scheduling responder module feedback error response message; In the situation that the number that the result of comparison module is the downlink component carrier that detects is not equal to the number of the downlink component carrier of index information indication, decapacitation responder module.
By means of technique scheme one of at least, the present invention is by setting in advance index information and sending to terminal, make terminal the number of the PDSCH that detects can be compared with the number of the PDSCH of index information indication, according to comparative result to feedback information to predetermined PUCCH, overcome UE of the prior art and can't correctly feed back the problem that corresponding data that the base station causes to whole PDSCH of its configuration is lost that whether detected, and then can avoid the loss of the transmission of data, can improve the transmission quality of communication system.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the data configuration information dropout of the partial carrier wave in correlation technique;
Fig. 2 is the flow chart according to the processing method of the Channel Detection of the inventive method embodiment one;
Fig. 3 is the flow chart according to the channel detection method of the inventive method embodiment two;
Fig. 4 is the flow chart according to the inventive method embodiment one and two Channel Detection scheme;
Fig. 5 is the schematic diagram according to the data configuration information dropout of the partial carrier wave of the embodiment of the present invention;
Fig. 6 is the block diagram according to the base station of apparatus of the present invention embodiment one;
Fig. 7 is the block diagram according to the terminal of apparatus of the present invention embodiment two.
Embodiment
Functional overview
When being the data configuration information dropout of the partial carrier wave in correlation technique, adopts Fig. 1 the schematic diagram of Bundling feedback method, as shown in Figure 1, the configuration information of the PDCCH that PDSCH on component carrier 4 is corresponding is lost, therefore UE only detects the PDSCH data on component carrier 1, component carrier 2 and component carrier 3, according to testing result, be ACK for the HARQ message of three PDSCH.because UE does not detect configuration information on component carrier 4, UE will think does not have downlink data to send on this component carrier 4, therefore, UE is to component carrier 1, HARQ message on component carrier 2 and component carrier 3 carries out obtaining ACK message after Bundling, UE feeding back ACK message to predetermined PUCCH (can be and component carrier 1, component carrier 2, any one correspondence in PDSCH on component carrier 3) on, what detect due to the base station is ACK message, the base station just can not retransmit missing data, namely, can not resend the data on component carrier 4.
by above-mentioned process shown in Figure 1, can find out, when the configuration information of the PDCCH on certain downlink component carrier is lost, user terminal (User Equipment, referred to as UE) just can not detect PDSCH corresponding to this PDCCH, do not have any feedback information yet, if this moment, UE is correct detection to the PDSCH on other downlink component carriers, the feedback information of UE after to feedback information Bundling is ACK, that is to say, the information that UE feeds back on predetermined PUCCH does not correctly reflect the detection case of UE, and the base station is ACK due to the feedback information that detects, think that terminal has correctly detected all PDSCH, therefore the associative operations such as data re-transmission can not carried out in the base station, the loss that has caused downlink data.
based on this, the invention provides a kind of Channel Detection scheme, by setting in advance index information (can be called the downstream arrangements index information), and send to terminal, the number that in the number that makes the downlink component carrier that terminal can be shared with the PDSCH that detects and the down link of index information indication is the shared downlink component carrier of the PDSCH of terminal scheduling is compared, according to the comparative result feedback information, particularly, when the number of the downlink component carrier that detects in terminal is not equal to the number of downlink component carrier of index information indication, terminal is not to predetermined PUCCH feedback information, if the base station does not detect any information on predetermined PUCCH, represent that this terminal does not detect all PDSCH, that is to say, at least exist the configuration information of a PUCCH to lose, therefore, the base station will resend data to terminal.The present invention can reflect correctly that terminal detects the situation of PDSCH, that is to say, correctly reflects the situation whether configuration information of PDCCH is lost, and has avoided causing due to undetected PDSCH in the prior art problem of loss of data.
For the ease of understanding the embodiment of the present invention, before the explanation embodiment of the present invention, at first the operation principle of downlink data transmission described.
When the base station sends downlink data to terminal, transmitting downlink data can be come by a plurality of downlink component carriers of dynamic dispatching (component carrier) in the base station, wherein, each downlink component carrier can carry PDSCH and PDCCH, and PDSCH and PDCCH are corresponding one by one.Wherein, PDSCH is used for carrying the downlink data that the base station sends to the user, and PDCCH is used for carrying and resolves the needed configuration information of this downlink data.For each downlink component carrier, in data transmission procedure, the base station can be carried on downlink data and the configuration information corresponding with this downlink data in PDSCH and PDCCH respectively and send to the user, the user detects downlink data in PDSCH by reading configuration information in PDCCH, wherein, configuration information comprises the information such as Resource Block at solution/coded system, the data place of the data on PDSCH.
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.Need to prove, if do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
Embodiment of the method one
According to the embodiment of the present invention, a kind of processing method of Channel Detection is provided, preferably be applied to the base station, to solve the problems of the prior art.
Fig. 2 is the flow chart according to the processing method of the Channel Detection of the embodiment of the present invention, and as shown in Figure 2, this processing method comprises following flow process (step 202-step 204).
Step 202, the base station arranges index information, and index information is sent to terminal, wherein, index information is used to indicate in down link the number for the shared downlink component carrier of the PDSCH of terminal scheduling, that is, and and the number of the downlink component carrier that the PDSCH of carrying current data transmission is shared.Preferably, this index information can be carried in the configuration information of the PDCCH on each downlink component carrier, and like this, terminal just can be known the number of the PDSCH that needs detection when receiving the configuration information of at least one PDCCH.Due to PDSCH of carrying on a downlink component carrier, above-mentioned index information also can be used to indicate in down link the number for the PDSCH of terminal scheduling, below if not otherwise specified, the number of PDSCH just is equivalent to carry the number of the downlink component carrier of PDSCH.
Step 204, the base station is detected predetermined PUCCH, if response message do not detected on predetermined PUCCH, resends current data.The predetermined PUCCH here is consistent with predetermined PUCCH definition of the prior art, that is, and and with the corresponding PUCCH of certain PDSCH in step 202.
By above-mentioned steps 202, the base station arranges index information according to a plurality of PDSCH that are used for the carrying data of configuration, and this index information is notified to terminal, make terminal can know the number of the PDSCH that needs detection, thereby can avoid the problem that causes loss of data due to undetected PDSCH of the prior art.
The bit number that above-mentioned index information takies is used N
DAIExpression is take the LTE-Advance system as example, if the downlink component carrier number in the LTE-Advance system is N, N
DAICan be determined by following formula:
Wherein, N is the downlink component carrier number in system, and N is the natural number more than or equal to 1,
Represent to round up operation.Preferably, this N
DAICan be 2.Table 1 shows N
DAIWhen being 2 bit, the corresponding relation of the number of the PDSCH that different index informations and the transmission of the current data of its indication are shared.As shown in table 1, wherein, index information " 00 ", the number of the PDSCH that the current data transmission of indication is shared is 1, index information " 01 ", and the number of the PDSCH that the current data transmission of indication is shared is 2, index information " 10 ", the number of the PDSCH that the current data transmission of indication is shared is 3, index information " 11 ", and the number of the PDSCH that the current data transmission of indication is shared is 4.
Table 1
| Index information | The number of the shared downlink component carrier of PDSCH |
| 0，0 | 1 |
| 0，1 | 2 |
| 1，0 | 3 |
| 1，1 | 4 |
Need to prove, above-mentioned table 1 just schematically shows a kind of relation of the number of the shared downlink component carrier of the PDSCH of index information and its indication, be not limited to the corresponding relation shown in table 1, following table 2 shows the another kind of corresponding relation of the number of the shared downlink component carrier of the PDSCH of index information and its indication.
Table 2
| Index information | The number of the shared downlink component carrier of PDSCH |
| 0，0 | 1 or 5 or 9 |
| 0，1 | 2 or 6 |
| 1，0 | 3 or 7 |
| 1，1 | 0 or 4 or 8 |
Embodiment of the method two
According to the embodiment of the present invention, a kind of channel detection method is provided, has been applied to the scene that terminal detects PDSCH, wherein, terminal detects PDSCH according to the configuration information in the PDCCH corresponding with PDSCH, and carrying need to send to the current data of terminal on PDSCH.Fig. 3 is the flow chart according to the channel detection method of the present embodiment, and as shown in Figure 3, the method comprises the steps (step 302-step 306).
Step 304, terminal detects the PDSCH on corresponding downlink component carrier according to the configuration information in PDCCH, and the number of the downlink component carrier of the index information indication of the number of the downlink component carrier that detects and step 302 is compared.
Step 306, if the number of the downlink component carrier that detects is not equal to the number of the downlink component carrier of index information indication, that is to say, the undetected at least PDSCH of terminal, at this moment, terminal is not fed back any message to predetermined PUCCH, any response message that any message here refers to (comprising ACK (Acknowledgement) and NACK (Negative Acknowledgement)).
The base station is detected predetermined PUCCH, for step 306, if the base station does not detect any response message, shows that terminal does not detect configuration to all PDSCH of terminal, and at this moment, the base station resends current data to terminal.
In specific implementation process, if the number of the downlink component carrier that terminal detects equals the number of the downlink component carrier of index information indication, that is to say, terminal does not have undetected PDSCH, at this moment, terminal comprises following two kinds for the situation of predetermined PUCCH feedback:
Situation one: terminal is all correct to the detection of whole PDSCH, and according to Bundling mode of the prior art, terminal feedback ACK message is to predetermined PUCCH.The base station is detected predetermined PUCCH is upper, and the information that detects is ACK message, just think terminal correctly detected the PDSCH of promising its configuration, then, the base station sends other new datas;
Situation two: terminal is wrong to the detection of a PDSCH at least, and according to Bundling mode of the prior art, terminal feedback NACK message is to predetermined PUCCH.The base station is detected predetermined PUCCH is upper, and the information that detects is NACK message, will resend current data to terminal, again detects PDSCH for terminal.
For the situation in situation two and above-mentioned steps 306, the base station can resend current data, and in the present invention, for these two kinds of different situations, the mode that the base station resends current data can be identical, can be also different, the invention is not restricted to this.
The below (is called downstream arrangements index (downlink assignment index with LTE-Advance system, above-mentioned index information in this example, referred to as DAI) information) be used to indicate that to send to terminal in the number of the shared downlink component carrier of PDSCH and configuration information that this index information is carried at PDCCH be example, describe the embodiment of the present invention in detail, following DAI information exchange is crossed V
DAI DLRepresent.
Receive the PDCCH of each downlink component carrier as UE after, by the V in the configuration information in PDCCH
DAI DL, know the number of the downlink component carrier that the PDSCH that is configured is shared.Suppose, the number of the actual PDSCH that detects of UE is U
DAI DLIf,
Represent that UE has detected all PDSCH that are configured, that is to say, the configuration information that does not have a PDCCH on downlink component carrier is lost and the undetected problem of PDSCH that causes, and for above-mentioned situation one, terminal is to predetermined PDCCH feeding back ACK message; If
Represent that UE does not detect all PDSCH that are configured, that is to say, at least exist the configuration information of PDCCH corresponding on a downlink component carrier to lose, at this moment, terminal is not fed back any response message to predetermined PUCCH, and the base station is when detecting predetermined PUCCH, if any response message do not detected like this, carry out the associative operations such as data re-transmission, so just effectively avoided the loss problem of downlink data.
Fig. 4 is the flow chart according to said method embodiment one and two Channel Detection scheme, and as shown in Figure 4, this Channel Detection scheme comprises the steps (step 402-step 406):
Step 402, base station are carried out the PDSCH scheduling of resource of downlink component carrier according to schedule information for each UE, and with the configuration information of the corresponding PDCCH of PDSCH in add DAI information, this DAI information is used to indicate the number of the shared downlink component carrier of PDSCH;
Step 404, UE detects corresponding PDSCH according to the configuration information of PDCCH, and according to the DAI information in configuration information, feed back NACK message or ACK message or do not feed back any response message to predetermined PUCCH, this step is corresponding to above-mentioned steps 304 and step 306;
Step 406, the base station judges whether to retransmit current data or sends new data according to the testing result to predetermined PUCCH, if NACK message detected or any message do not detected, retransmits current data, if ACK message detected, send new data.Particularly, the detailed description of this step 406 can with reference to above-mentioned description to Fig. 3, be repeated no more here.
Fig. 5 is the schematic diagram according to the channel detection method of the embodiment of the present invention.The downlink bandwidth of supposing the LTE-Advanced system is 80MHz, is polymerized by the downlink component carrier of 4 20MHz, is used for the PDSCH transmission for four downlink component carriers of certain UE configuration in actual disposition.As shown in Figure 5, according to table 1, add the DAI information of dibit in configuration information in the corresponding PDCCH of the PDSCH of each downlink component carrier, be used for the PDSCH transmission owing to having configured four descending carriers for UE, this moment, the DAI bit information was " 11 ", and four PDSCH on downlink component carrier are dispatched in expression altogether.
In Fig. 5, the PDSCH number of the actual downlink component carrier that detects of UE is 3 (PDSCH on component carrier 1, component carrier 2 and component carrier 3), that is,
And according to the DAI information on component carrier 1, component carrier 2 and component carrier 3, can know
, due to
Terminal can be learned the configuration information loss that has the PDCCH on downlink component carrier and the undetected situation of PDSCH that causes, therefore, UE do not feed back any message to predetermined PUCCH (this predetermined PUCCH can be with component carrier 1, component carrier 2 and component carrier 3 on PDSCH in any one is corresponding) on, so that the base station such as retransmits at the associative operation after detecting predetermined PUCCH, so just effectively avoided the problem of loss of data.
Need to prove, for convenience of description, above-mentioned form with step has illustrated and has described the technical scheme of embodiment of the method for the present invention, and the above-mentioned step that illustrates can be carried out in the computer system such as one group of computer executable instructions.Although provided logical order in the description process, in some cases, can carry out step shown or that describe with the order that is different from herein.
Device embodiment one
According to the embodiment of the present invention, a kind of base station is provided, preferentially be used for realizing the processing method of the Channel Detection of said method embodiment one, Fig. 6 is the block diagram of this base station, as shown in Figure 6, this base station comprises: module 60, the first sending module 62, the second sending module 64, receiver module 66 and scheduler module 68 are set, below each module are described in detail.
Module 60 is set, is used for index information is set, wherein, index information is used to indicate and is the number of the shared downlink component carrier of the PDSCH of terminal scheduling in down link, perhaps is used to indicate the number of the shared PDSCH of current data transmission; The first sending module 62 is connected to module 60 is set, and sends to terminal for the index information that module 60 settings will be set; The second sending module 64 is used for sending current data to terminal, and wherein, current data is carried on PDSCH; Detection module 66 is used for predetermined PUCCH (PDSCH on the PUCCH that this is predetermined and downlink component carrier is corresponding) is detected; Scheduler module 68, be connected to detection module 66 and the second sending module 64, be used for the second sending module 64 is dispatched, particularly, according to the response message that detection module 66 detects, the second sending module 64 is dispatched, wherein, if detection module 66 detects NACK message or any response message do not detected, dispatch the second sending module 64 and resend current data; If detection module 66 detects ACK message, dispatch the second sending module 64 and send new data.
In specific implementation process, above-mentioned the first sending module 62 and the second sending module 64 can be unified setting, be used for sending index information and data, the description of the index information in the present embodiment and the implementation of above-mentioned each module can with reference to said method embodiment one, be repeated no more here.
Can be found out by above description, by module 60 is set, index information is set, and by the first sending module 62, this index information is sent to terminal, make the terminal can be according to index information, judge whether the situation of undetected PDSCH, thereby can avoid terminal of the prior art in the situation that undetected PDSCH causes the problem of loss of data to predetermined PUCCH feeding back ACK message, and then can improve the transmission quality of communication system.
Device embodiment two
According to the embodiment of the present invention, a kind of terminal is provided, preferentially be used for realizing the method for the Channel Detection of said method embodiment two, Fig. 7 is the block diagram of this terminal, as shown in Figure 7, this terminal comprises: receiver module 70, detection module 72 comparison modules 74, responder module 76 and control module are described in detail each module below 78.
receiver module 70, for the configuration information of the PDCCH that receives the base station transmission and the index information of base station setting, wherein, index information is used to indicate and is the number of the shared downlink component carrier of the PDSCH of terminal scheduling in down link, perhaps is used for the number of the shared PDSCH of current data transmission, detection module 72 is connected to receiver module 70, is used for according to the configuration information that receiver module 70 receives, the PDSCH on downlink component carrier corresponding to PDCCH being detected, comparison module 74, be connected to detection module 72 and receiver module 70, the number that is used for downlink component carrier (perhaps PDSCH) that detection module 72 is detected compares with the number of the downlink component carrier (perhaps PDSCH) that the index information that receiver module 70 receives is indicated, responder module 76 is used for feeding back response information to predetermined PUCCH (PDSCH on the PUCCH that this is predetermined and downlink component carrier is corresponding), control module 78, be connected to comparison module 74 and responder module 76, be used for the comparative result according to comparison module 74, enable or decapacitation responder module 76, particularly, if the number that the comparative result of comparison module 74 is the downlink component carrier (perhaps PDSCH) that detects is not equal to the number of the downlink component carrier (perhaps PDSCH) of index information indication, do not carry out responder module 76, if the number that the comparative result of comparison module 74 is the downlink component carrier (perhaps PDSCH) that detects equals the number of the downlink component carrier (perhaps PDSCH) of index information indication, scheduling responder module 76, in the situation that terminal all detects correct to the data that the whole PDSCH that detect carry, responder module 76 feeding back ACK message are to predetermined PUCCH, otherwise, responder module 76 feedback NACK message are to predetermined PUCCH.
In specific implementation process, the description of the index information in the present embodiment and the implementation of above-mentioned each module can with reference to said method embodiment two, be repeated no more here.
Can be found out by above description, the present embodiment can avoid terminal of the prior art in the situation that undetected PDSCH causes the problem of loss of data to predetermined PUCCH feeding back ACK message, and then can improve the transmission quality of communication system.
in sum, by setting in advance index information, and send to terminal, make the number of the downlink component carrier (perhaps PDSCH) that terminal can indicate the number of the downlink component carrier (perhaps PDSCH) that detects and index information compare, according to comparative result to predetermined PUCCH feedback information, by the present invention can correctly detect terminal whether undetected PDSCH, thereby can avoid the problem that causes loss of data due to undetected PDSCH of the prior art, and then can avoid the loss of downlink data, can improve the transmission quality of communication system.
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, perhaps 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, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is only 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 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. channel detection method, being applied to terminal is that PDSCH detects to Physical Downlink Shared Channel, wherein, the described terminal basis Physical Downlink Control Channel corresponding with described PDSCH is that the configuration information in PDCCH detects described PDSCH, the upper carrying of described PDSCH current data, it is characterized in that, described method comprises:
Terminal is obtained the index information from the base station, and wherein, described index information is set in advance by described base station, is used to indicate in down link the number for the shared downlink component carrier of the PDSCH of described terminal scheduling;
Described terminal detects the PDSCH on corresponding downlink component carrier according to described configuration information, and the number of the downlink component carrier of the number of the downlink component carrier that detects and the indication of described index information is compared;
If the number of the described downlink component carrier that detects is not equal to the number of the downlink component carrier of described index information indication, described terminal feeding back response information not.
2. method according to claim 1, is characterized in that, described index information is carried at and sends to described terminal in described configuration information.
3. method according to claim 1, is characterized in that, determines by following formula the bit number N that described index information takies
DAI:
4. method according to claim 1, is characterized in that, described index information takies 2 bits.
5. method according to claim 1, it is characterized in that, if the number of the described downlink component carrier that detects equals the number of the downlink component carrier of described index information indication, and the data that the PDSCH on each downlink component carrier that detects carries all detect correctly, described terminal correct response message of feedback on predetermined Physical Uplink Control Channel PUCCH.
6. method according to claim 1, it is characterized in that, if the number of the described downlink component carrier that detects equals the downlink component carrier number of described index information indication, and the data that the PDSCH on the downlink component carrier that detects carries all do not detect correct, described terminal feedback error response message on predetermined PUCCH.
7. the described method of according to claim 1 to 6 any one, is characterized in that, response message is detected in described base station on predetermined PUCCH, if any response message do not detected or error response message detected, described base station resends described current data; If correct response message detected, described base station sends other data.
8. the processing method of a Channel Detection, is characterized in that, described method comprises:
The base station arranges index information, and described index information is sent to terminal, wherein, described index information is used to indicate and is the number of the shared downlink component carrier of the Physical Downlink Shared Channel PDSCH of described terminal scheduling in down link, and the upper carrying of described PDSCH need to send to the current data of terminal;
Described base station is detected predetermined Physical Uplink Control Channel PUCCH, if response message do not detected on described predetermined PUCCH, resends described current data.
9. method according to claim 8, is characterized in that, it is one of following that described method also comprises:
If the response message that described base station detects on described predetermined PUCCH is correct response message, described base station sends other data;
If the response message that described base station detects on described predetermined PUCCH is error response message, described base station resends described current data.
10. a base station, is characterized in that, comprising:
Module is set, is used for index information is set, wherein, described index information is used to indicate in down link the number for the shared downlink component carrier of the Physical Downlink Shared Channel PDSCH of terminal scheduling;
The first sending module is used for the described index information that the module setting is set is sent to terminal;
The second sending module is used for sending current data to described terminal, and wherein, described current data is carried on described PDSCH;
Detection module is used for predetermined Physical Uplink Control Channel PUCCH is detected;
Scheduler module is used for response message not detected in the situation that the response message that described detection module detects is error response message or described detection module, dispatches described the second sending module and resends described current data; In the situation that the response message that described detection module detects is correct response message, dispatches described the second sending module and send new data.
11. a terminal is characterized in that, comprising:
Receiver module, for the configuration information of the physical downlink control channel PDCCH that receives the base station transmission and the index information of base station setting, wherein, described index information is used to indicate in down link the number for the shared downlink component carrier of the Physical Downlink Shared Channel PDSCH of described terminal scheduling;
Detection module is used for according to the described configuration information that described receiver module receives, the Physical Downlink Shared Channel PDSCH on the corresponding downlink component carrier of described physical downlink control channel PDCCH being detected;
Comparison module, the number that is used for the downlink component carrier that will detect compares with the number of the downlink component carrier that described index information is indicated;
Responder module is used for feeding back response information to predetermined Physical Uplink Control Channel PUCCH;
Control module, be used for the described responder module of comparative result scheduling according to described comparison module, in the situation that the number that the result of described comparison module is the downlink component carrier that detects equals the number of the downlink component carrier of described index information indication, if the data that the whole PDSCH that detect carry all detect correctly, dispatch the correct response message of described responder module feedback, otherwise, dispatch described responder module feedback error response message; In the situation that the number that the result of described comparison module is the downlink component carrier that detects is not equal to the number of the downlink component carrier of described index information indication, do not enable described responder module.
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| CN 200910005225 CN101488832B (en) | 2009-01-19 | 2009-01-19 | Channel detecting and processing method, terminal and base station |
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