CN101998634B - Method, system and equipment for transmitting periodical feedback information - Google Patents
Method, system and equipment for transmitting periodical feedback information Download PDFInfo
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- CN101998634B CN101998634B CN 200910090482 CN200910090482A CN101998634B CN 101998634 B CN101998634 B CN 101998634B CN 200910090482 CN200910090482 CN 200910090482 CN 200910090482 A CN200910090482 A CN 200910090482A CN 101998634 B CN101998634 B CN 101998634B
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Abstract
The embodiment of the invention discloses a method for transmitting periodical feedback information. The method comprises the following steps: a base station transmits periodical feedback long-term information through a wireless resource control (RRC) signaling, including feedback types, feedback periods and the like, and releases the periodical feedback resource through the RRC signaling; physical resource information of the periodical feedback is transmitted through a physical downlink control channel (PDCCH), including the number, positions and modulated code modes and the like of physicalresource blocks (PRB); and a terminal transmits the periodical feedback information according to the periodical feedback resource distributed by the base station. The embodiment of the invention alsodiscloses a system and equipment for transmitting the periodical feedback information. By adopting the invention, reasonable dispatch and transmission of the periodical feedback information in a longterm evolution (LTE)-A system can be realized.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of periodically method, system and equipment of feedback information of transmitting.
Background technology
Can pass through coordinate multipoint (Coordinated multi-point in long-term evolution upgrading (LTE-A) system, CoMP) sending and receiving (transmission/reception) technology increases the covering of high data rate, improves the throughput of cell edge and/or increases throughput of system.So-called coordinate multipoint refers to the collaborative transmitting/receiving data that participates in a UE of a plurality of transfer points of separating on the geographical position, and these a plurality of transfer points are the different districts that belong to one or more base stations.
The CoMP technology is divided into descending CoMP and up CoMP, and descending CoMP refers to the measurement of terminal (UE) needs or processes downstream signal or the data of a plurality of residential quarters; Up CoMP refers to that a plurality of residential quarters receive the upstream data of same UE, and merges the processing decoding by certain technology.Descending CoMP is divided into Combined Treatment (Joint Processing, JP) and cooperative scheduling/collaborative wave beam forming (Coordinated Scheduling/Beamforming, CS/CB).Under the Combined Treatment mode, may there be a plurality of residential quarters to participate in downlink data transmission, many cell transmission mode is called again joint transmission (Joint Transmission), and single cell transmission mode is called again dynamic cell and selects (Dynamic Cell Selection); Under the CS/CB, only have Serving cell (serving cell) UE is dispatched and to transmit, each minizone is disturbed by information interaction and is avoided and eliminate.Fig. 1 is the example of three community associated transmission.
In descending CoMP, reasonably dispatch and transmit in order to cooperate base station (eNB), UE need to measure the channel quality of each residential quarter and feed back.The feedback content type that defines among the CoMP at present has:
The first, the explicit feedback type, namely explicit channel status/statistical message is fed back, and the message of feedback is not carried out any transmission or reception ﹠ disposal;
Second, the implicit feedback type, it is implicit information channel state/statistical message feedback, feed back treated information, such as channel quality indication (Channel Quality Indication, CQI) information, precoding matrix indicators (Precoding Matrix Indicator, PMI), order indication (Rank Indication, RI) etc.
The 3rd, Sounding Reference Signal (SRS) type is namely utilized channel reciprocity, and the SRS that UE sends can be used for eNB and carries out channel condition information (CSI) estimation.
The feedback kind that UE carries out channel quality information in the LTE system is equivalent to the implicit feedback in the CoMP feedback, and feedback content has CQI, PMI, RI etc.Its feedback system that adopts is that UE passes through Physical Uplink Control Channel (PUCCH) to the base station feedback channel quality information according to configuration information.
In realizing process of the present invention, the inventor finds to exist in the prior art following technical problem:
Do not have at present the scheduling scheme for the descending CoMP feedback of LTE-A system, and then so that UE can't carry out the feedback of multi-cell channel quality information.
Summary of the invention
The embodiment of the invention provides a kind of periodically method, system and equipment of feedback information of transmitting, and is used for solving the problem that can't carry out the periodic feedback scheduling of resource in the prior art LTE-A system.
A kind of periodically method of feedback information of transmitting, the method comprises:
The base station is terminal distribution periodic feedback resource;
The information exchange of described periodic feedback resource is crossed the radio resource control RRC signaling in the base station and physical downlink control channel PDCCH sends to described terminal, is used to indicate described terminal and sends periodic feedback information to described base station according to the information of described periodic feedback resource on this periodic feedback resource;
Described base station is crossed RRC signaling and PDCCH with the information exchange of described periodic feedback resource and sent to described terminal and comprise: described base station is carried at the long-term information of described periodic feedback resource and sends to described terminal in the RRC signaling; Described base station sends to described terminal in the moment of the scheduling feedback transmission first time by PDCCH with the schedule information of described periodic feedback resource;
Described terminal is comprising sending periodic feedback information to described base station on this periodic feedback resource according to the information of described periodic feedback resource: after described terminal received described RRC signaling and described PDCCH, the first feedback of moment correspondence of feedback transmission constantly began, adopts the feedback time cycle that comprises the described long-term information and utilizes the represented physical resource of the physical resource information that comprises in the described schedule information to described base station transmission periodic feedback information from described first time;
Described base station sends to described terminal with the schedule information of described periodic feedback resource by PDCCH and comprises: described base station is carried at the schedule information of described periodic feedback resource among the descending control message DCI; Utilize the described DCI of pre-assigned special Radio Network Temporary Identifier RNTI scrambling; DCI after the scrambling is sent to described terminal by described PDCCH; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback; Described terminal receives described PDCCH and comprises: after described terminal detects the DCI that utilizes described special RNTI scrambling at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling; Perhaps, described base station sends to described terminal with the schedule information of described periodic feedback resource by PDCCH and comprises: the format content configuration is carried out with descending control message DCI in described base station, the schedule information of described periodic feedback resource is carried among the DCI after the configuration, and this DCI is sent to described terminal by described PDCCH; Described terminal receives described PDCCH and comprises: after described terminal detects the DCI with described format content at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling.
A kind of periodically system of feedback information of transmitting, this system comprises:
The base station is used to terminal distribution periodic feedback resource, and the information exchange of this periodic feedback resource is crossed the radio resource control RRC signaling and physical downlink control channel PDCCH sends to described terminal;
Terminal is used for the information according to described periodic feedback resource, sends periodic feedback information to described base station on this periodic feedback resource;
Described base station is used for: the long-term information of described periodic feedback resource is carried at the RRC signaling sends to described terminal, the moment of feedback transmission sends to described terminal by PDCCH for the first time in scheduling with the schedule information of described periodic feedback resource;
Described terminal is used for: after receiving described RRC signaling and described PDCCH, the moment of feedback transmission begins, adopts the feedback time cycle that comprises the described long-term information and utilizes the represented physical resource of physical resource information that comprises in the described schedule information to send periodic feedback information to described base station from described first time;
Described base station is used for: the schedule information of described periodic feedback resource is carried at descending control message DCI; Utilize the described DCI of pre-assigned special Radio Network Temporary Identifier RNTI scrambling; DCI after the scrambling is sent to described terminal by described PDCCH; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback; Described terminal is used for: after detecting the DCI that utilizes described special RNTI scrambling at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling; Perhaps, described base station is used for: descending control message DCI is carried out format content configuration, the schedule information of described periodic feedback resource is carried among the DCI after the configuration, and this DCI is sent to described terminal by described PDCCH; Described terminal is used for: after detecting the DCI with described format content at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling.
A kind of base station, this base station comprises:
The periodic resources allocation units are used to terminal distribution periodic feedback resource;
The resource information transmitting element, the information exchange that is used for periodic feedback resource that described periodic resources allocation units are distributed crosses the radio resource control RRC signaling and physical downlink control channel PDCCH sends to described terminal;
Described resource information transmitting element comprises:
The first transmitting element is used for the long-term information of described periodic feedback resource is carried at the RRC signaling, and this RRC signaling is sent to described terminal;
The second transmitting element is used for the schedule information of described periodic feedback resource is sent to described terminal in the moment of the scheduling feedback transmission first time by PDCCH;
Described the second transmitting element is used for: the schedule information of described periodic feedback resource is carried at descending control message DCI; Utilize the described DCI of pre-assigned special Radio Network Temporary Identifier RNTI scrambling; DCI after the scrambling is sent to described terminal by described PDCCH; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback; Perhaps, described the second transmitting element is used for: descending control message DCI is carried out format content configuration, the schedule information of described periodic feedback resource is carried among the DCI after the configuration, and this DCI is sent to described terminal by described PDCCH.
A kind of terminal, this terminal comprises:
The resource information receiving element be used for to receive the information for the periodic feedback resource of this terminal distribution that send by radio resource control RRC signaling and physical downlink control channel PDCCH the base station;
The periodic feedback unit is used for the information according to described periodic feedback resource, sends periodic feedback information to described base station on this periodic feedback resource;
Described resource information receiving element is used for:
Receive the RRC signaling of the long-term information of carrying described periodic feedback resource of sending the base station and receive the base station at the scheduling PDCCH of the schedule information that carries described periodic feedback resource sent of the moment of feedback transmission for the first time;
Described periodic feedback unit is used for:
The moment of feedback transmission begins, adopts the feedback time cycle that comprises the described long-term information and utilizes the represented physical resource of physical resource information that comprises in the described schedule information to send periodic feedback information to described base station from described first time;
Described resource information receiving element is used for: after detecting the DCI that utilizes pre-assigned special Radio Network Temporary Identifier RNTI scrambling that sends the base station at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback; Perhaps, described resource information receiving element is used for: after detecting the DCI with specific format content that sends the base station at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling.
Among the present invention, to cross the RRC signaling and PDCCH sends to terminal for the information exchange of the periodic feedback resource of terminal distribution by the base station, terminal is according to the information of the periodic feedback resource that receives, on this periodic feedback resource, send periodic feedback information to the base station, thereby realized carrying out the periodic feedback scheduling of resource in the LTE-A system, and terminal is carried out the scheme of periodic feedback according to this scheduling.
Description of drawings
Fig. 1 is the schematic diagram of community associated transmission of the prior art;
The method flow schematic diagram that Fig. 2 provides for the embodiment of the invention;
Fig. 3 A is the schematic flow sheet of example one of the present invention;
Fig. 3 B is the schematic flow sheet of example two of the present invention;
Fig. 3 C is the schematic flow sheet of example three of the present invention;
Fig. 3 D is the schematic flow sheet of example four of the present invention;
The system configuration schematic diagram that Fig. 4 provides for the embodiment of the invention;
The architecture of base station schematic diagram that Fig. 5 provides for the embodiment of the invention;
The terminal structure schematic diagram that Fig. 6 provides for the embodiment of the invention.
Embodiment
In order to realize carrying out the periodic feedback scheduling of resource in the LTE-A system, the embodiment of the invention provides a kind of periodically method of feedback information of transmitting, in this method, the base station will send to terminal for the information of the periodic feedback resource of terminal distribution, terminal is according to the information of the periodic feedback resource that receives, sends periodic feedback information on this periodic feedback resource to the base station.
Referring to Fig. 2, the transmission that the embodiment of the invention provides is the method for feedback information periodically, specifically may further comprise the steps:
Step 10: the base station is terminal distribution periodic feedback resource, the information exchange of this periodic feedback resource is crossed Radio Resource control (RRC) signaling and Physical Downlink Control Channel (PDCCH) sends to terminal;
Step 11: terminal is according to the information of the periodic feedback resource that receives, sends periodic feedback information on this periodic feedback resource to the base station.
In the step 10, the information of the periodic feedback resource that the base station sends comprises the long-term information of periodic feedback resource and the schedule information of periodic feedback resource.The long-term information of periodic feedback resource comprises feedback content type, feedback time cycle etc.; The schedule information of periodic feedback resource comprises the physical resource information such as Physical Resource Block (PRB) number, PRB position, modulation coding mode (MCS) and other physical layer map informations.Wherein, the feedback content type can be explicit feedback type, implicit feedback type, SRS type etc.Periodic feedback information corresponding to explicit feedback type comprises any information of not carrying out any transmission or reception ﹠ disposal.Periodic feedback information corresponding to implicit feedback type comprises CQI, PMI, RI information etc.Periodic feedback information corresponding to SRS type comprises Sounding Reference Signal etc.Certainly, the long-term information of periodic feedback resource is not limited to above-mentioned feedback content type, feedback time cycle, can also comprise any information that has nothing to do with channel.
In force, the base station is carried at the long-term information of periodic feedback resource in the RRC signaling and sends to terminal; Then, the schedule information with the periodic feedback resource sends to terminal in the moment of the scheduling feedback transmission first time by PDCCH.
When the information of the periodic feedback resource that sends in the base station comprises feedback content type, feedback time cycle and physical resource information, can dispatch in the following way:
At first, the base station is carried at feedback content type and feedback time cycle in Radio Resource control (RRC) signaling, and this RRC signaling is sent to terminal; The base station is carried at physical resource information in the descending control message (DCI), and the moment of feedback transmission sends to terminal by Physical Downlink Control Channel (PDCCH) with this DCI for the first time in scheduling;
Then, terminal receives RRC signaling and DCI, from RRC signaling and DCI, read feedback content type, feedback time cycle and physical resource information, from this first time feedback transmission moment correspondence first feedback constantly, adopt this feedback time cycle and utilize the represented physical resource of this physical resource information to periodic feedback information corresponding to this feedback content type of base station periodic feedback.For example, the moment of feedback transmission is t0 for the first time, and the feedback content type that terminal reads is implicit type, and the feedback time cycle is T1, and physical resource information comprises 4＜PRB＜8 and I
MCS=29, then terminal from the t1 of t0 interval of delta t constantly, every integral multiple time of T1, utilize 4～No. 8 PRB to CQI, PMI and the RI information of many residential quarters that the base station feedback one-shot measurement obtains, and adopt the MCS of No. 29 correspondences that feedback message is carried out modulating-coding.
In the step 11, terminal can send periodic feedback information by physical uplink shared control channel (PUSCH) to the base station.
For the terminal periodic feedback is stopped, the base station can also discharge periodic feedback indication information and be carried in the RRC signaling, and this RRC signaling is sent to terminal after sending schedule information; Terminal discharges indication information according to the periodic feedback of carrying in this RRC signaling, stops to base station transmission periodic feedback information, and property deenergized period feedback resources.
For so that terminal is carried out periodic feedback according to up-to-date resource information all the time, after the base station sends the information of a periodic feedback resource by RRC signaling and PDCCH, excessively new RRC signaling and the PDCCH of information exchange of the periodic feedback resource that reconfigures sent to terminal, terminal is according to the information of the periodic feedback resource that reconfigures, sends periodic feedback information on the periodic feedback resource that this reconfigures to the base station.For example, the base station is carried at the long-term information of the periodic feedback resource that reconfigures in the new RRC signaling and sends to terminal, and the moment of feedback transmission sends to terminal by PDCCH for the first time in new scheduling with the schedule information of the periodic feedback resource that reconfigures; After terminal receives new RRC signaling and PDCCH, the first feedback of moment correspondence of feedback transmission constantly begins, adopts feedback time cycle of comprising the long-term information that reconfigures, and utilizes the represented physical resource of physical resource information that comprises in the schedule information that reconfigures to send periodic feedback information to the base station from new first time, and the before RRC signaling and the inefficacy of the DCI on the PDCCH that receive of base station.
Better, because PDCCH is used for the scheduling shared resource, comprise physical down shared control channel (PDSCH) resource and PUSCH resource.The physical resource of conventional PDCCH appointment is generally used for the transmission of high level data and signaling, needs media access control (MAC) layer to participate in, and mixed automatic repeat request (HARQ) process is arranged.The transmission of the periodic feedback information on PUSCH and the transfer of data difference on the conventional PUSCH are: what transmit during periodic feedback is physical layer signaling, need not notify the MAC layer, does not need the high level data organizational process; And there is not a HARQ process.Therefore, need to distinguish for the periodic feedback on the scheduling PUSCH with for the signaling on the PDCCH of scheduling routine data.The differentiating method that is used for signaling property dispatching cycle feedback, that transmit at PDCCH has following several:
The first: use special RNTI sign to distinguish.That is, the base station is carried at the schedule information of periodic feedback resource among the DCI; Then utilize pre-assigned, as to be exclusively used in dispatch terminal periodic feedback information this DCI of special Radio Network Temporary Identifier (RNTI) scrambling, and the DCI after the scrambling is sent to terminal by PDCCH; After terminal detects the DCI that utilizes described special RNTI scrambling at PDCCH, the first feedback time of schedule information and the physical resource information of read cycle feedback resources from this DCI signaling.
In the manner, define a special RNTI, should be called comp-RNTI by special RNTI, be used for the DCI that identification is used for the dispatch terminal periodic feedback.
A comp-RNTI is distributed for each UE in the base station, and UE determines that this DCI is the dispatching command for the periodic feedback of this UE after detecting the DCI of the comp-RNTI scrambling that is utilized as this UE distribution at PDCCH.
After introducing comp-RNTI, eNB need to distribute two RNTI, i.e. conventional C-RNTI and comp-RNTI at least for each UE.
The second utilizes the message of PDCCH carrying to distinguish.That is, format content configuration is carried out with DCI in the base station, then the schedule information of periodic feedback resource is carried among the DCI after the configuration, and this DCI is sent to terminal by PDCCH; After terminal detects the DCI with described format content at PDCCH, the schedule information of read cycle feedback resources from this DCI signaling.
Concrete, can there be the mode that DCI carries out the format content configuration base station: add the differential threshold information that is used for distinguishing the DCI (this DCI) Yu other DCI that carry first feedback time and physical resource information in DCI; Perhaps, the value of setting field is set to for distinguishing the numerical value of this DCI with other DCI among the DCI.This setting field comprises: the MCS field among the DCI, PRB field etc.Be analyzed as follows:
PDCCH is used for the physical layer resources scheduling, carrying be DCI.For different transmitting and scheduling types, different DCI forms is arranged.In order to identify the dispatching command for the dispatch terminal periodic feedback, can utilize some territories in the DCI form.
In LTE, what ascending resource scheduling adopted is DCI form 0, content relevant with the periodic feedback scheduling of resource in its essential information comprises: PRB distribution, MCS, redundancy versions (redundancy version, RV), CQI ask (CQI request).
Wherein, MSC and RV territory be 5bit altogether, the MCS shown in the corresponding following table, RV and TBS information.TBS index is used to specify the transmission block size (Transport block size, TBS) of determining size, in order to get the transmission of data to high level.RV0 can self-demarking code, and RV is not equal to 0 and is used for retransfer scheduling or other special purposes, when being used for retransfer scheduling RV be not equal to 0 generally can not self-demarking code.
In the LTE system, CQI request is used to specify needs to carry out the CQI transmission in this scheduling resource, if I
MCS=29, CQI request is made as the N that 1, PRB distributes appointment
PRB≤ 4, represent to only have the CQI feedback in this PUSCH transmission.
Expand to the CoMP feedback of LTE-A, CQI request territory can change feedback request (feedback request) territory into.
To sum up, the method that is used for the DCI of dispatch terminal periodic feedback of the format content identification by configuration DCI has following several:
Example one: add differential threshold information in DCI, this differential threshold information is used for distinguishing described DCI and other DCI;
Example two: with field I
MCSValue be set to predetermined value and distinguish, I for example
MCS=30;
Example three: with field I
MCSBe set to predetermined value with the value of PRB and distinguish, for example I
MCS=29 and during 4＜PRB, corresponding DCI is for being used for the DCI of dispatch terminal periodic feedback.
Among the present invention, the example of RRC Signalling Designing is as follows:
Feedback content type and feedback time cycle also available other modes represent, for example construct a feedback content type and the form in feedback time cycle, in the RRC signaling, stipulate to adopt which kind of mode in the form with the mode of sign (index).
The below describes the inventive method with specific embodiment:
Embodiment one, as shown in Figure 3A:
Step 30: the base station is carried at the feedback content type of UE periodic feedback and feedback time cycle T in the RRC signaling and sends to UE;
Step 31: the base station will be fed back used physical resource information by PDCCH at the moment t0 of the scheduling feedback transmission first time and be sent to UE;
Step 32:UE is according to the feedback content type of carrying in the RRC signaling and feedback time cycle T and the physical resource information that receives at PDCCH, from the t1 of t0 interval of delta t constantly, every the integral multiple time location of T, utilize this physical resource to send periodic feedback information corresponding to feedback content type to the base station.
Embodiment two, shown in Fig. 3 B:
Step 30: the base station is carried at the feedback content type of UE periodic feedback and feedback time cycle T in the RRC signaling and sends to UE;
Step 31: the base station will be fed back used physical resource information by PDCCH at the moment t0 of the scheduling feedback transmission first time and be sent to UE;
Step 32:UE is according to the feedback content type of carrying in the RRC signaling and feedback time cycle T and the physical resource information that receives at PDCCH, from the t1 of t0 interval of delta t constantly, every the integral multiple time location of T, utilize this physical resource to send periodic feedback information corresponding to feedback content type to the base station;
Step 33: when channel situation changed, the base station rescheduled periodic feedback by PDCCH, and the physical resource information exchange after being about to upgrade is crossed PDCCH and sent to UE;
Step 34:UE adopts the physical resource after upgrading to send periodic feedback information.
Embodiment three, shown in Fig. 3 C:
Step 30: the base station is carried at the feedback content type of UE periodic feedback and feedback time cycle T in the RRC signaling and sends to UE;
Step 31: the base station will be fed back used physical resource information by PDCCH at the moment t0 of the scheduling feedback transmission first time and be sent to UE;
Step 32:UE is according to the feedback content type of carrying in the RRC signaling and feedback time cycle T and the physical resource information that receives at PDCCH, from the t1 of t0 interval of delta t constantly, every the integral multiple time location of T, utilize this physical resource to send periodic feedback information corresponding to feedback content type to the base station;
Step 33: the feedback content type of base station reprovision periodic feedback and feedback time cycle, namely the base station sends to UE with feedback content type and the feedback time cycle T 1 of reprovision by the RRC signaling; After UE receives this RRC signaling, stop to send periodic feedback information to the base station, until receive new schedule information from PDCCH;
Step 34:RRC signaling to the periodic feedback reprovision after, the PDCCH resource in early stage is distributed inefficacy, need to reactivate the feedback first time behind the reprovision, namely the base station by PDCCH with the physical resource information of reprovision scheduling for the first time the moment t2 of feedback transmission send to UE;
After step 35:UE receives PDCCH again, according to the feedback content type of carrying in the RRC signaling that receives in the step 33 and feedback time cycle T 1 and the physical resource information that receives at PDCCH, from the t3 of t2 interval of delta t constantly, every the integral multiple time location of T1, utilize this physical resource to send a periodic feedback information to the base station.
Embodiment four, shown in Fig. 4 D:
Step 30: the base station is carried at the feedback content type of UE periodic feedback and feedback time cycle T in the RRC signaling and sends to UE;
Step 31: the base station will be fed back used physical resource information by PDCCH at the moment t0 of the scheduling feedback transmission first time and be sent to UE;
Step 32:UE is according to the feedback content type of carrying in the RRC signaling and feedback time cycle T and the physical resource information that receives at PDCCH, from the t1 of t0 interval of delta t constantly, every the integral multiple time location of T, utilize this physical resource to send periodic feedback information corresponding to feedback content type to the base station;
Step 33: the base station discharges indication information with periodic feedback and is carried in the RRC signaling, and this RRC signaling is sent to terminal;
Step 34: terminal discharges indication information according to the periodic feedback of carrying in the RRC signaling, stops to base station transmission periodic feedback information, and property deenergized period feedback resources.
Certainly, the base station sends the time that periodic feedback discharges the RRC signaling of indication information that carries to terminal, be not limited to the sequential of step 33, it can be any time after the step 30, in a single day terminal receives and carries the RRC signaling that periodic feedback discharges indication information, then stop to base station transmission periodic feedback information, simultaneously property deenergized period feedback resources.
Among the present invention, the periodic feedback information that terminal sends can be the channel quality relevant information of working in coordination with a plurality of residential quarters of these terminal transmission data, can also be any other information that needs terminal periodic to report.
Referring to Fig. 4, the embodiment of the invention also provides a kind of system of periodic feedback information, and this system comprises base station 40 and terminal 41, wherein:
Described base station 40 is used for: the long-term information of described periodic feedback resource is carried at the RRC signaling sends to described terminal, the moment of feedback transmission sends to described terminal by PDCCH for the first time in scheduling with the schedule information of described periodic feedback resource; Accordingly, described terminal 41 is used for: after receiving described RRC signaling and described PDCCH, the moment of feedback transmission begins, adopts the feedback time cycle that comprises the described long-term information and utilizes the represented physical resource of physical resource information that comprises in the described schedule information to send periodic feedback information to described base station from described first time.
Described base station 40 is further used for:
Periodic feedback is discharged indication information be carried in the RRC signaling, and this RRC signaling is sent to described terminal; Accordingly, described terminal 41 is further used for: discharge indication information according to the periodic feedback of carrying in the described RRC signaling, stop to send periodic feedback information to described base station, and property deenergized period feedback resources.
Described base station 40 is further used for: the information exchange of the periodic feedback resource that reconfigures is crossed the RRC signaling and PDCCH sends to described terminal; Accordingly, described terminal 41 is further used for: according to the information of the described periodic feedback resource that reconfigures, send periodic feedback information to described base station on the periodic feedback resource that this reconfigures.
Referring to Fig. 5, the embodiment of the invention also provides a kind of base station, can be applied in the system of periodic feedback information, and this base station comprises schedule information memory cell 50 and schedule information transmitting element 51, wherein:
Periodic resources allocation units 50 are used to terminal distribution periodic feedback resource;
Resource information transmitting element 51, the information exchange that is used for the periodic feedback resource that the periodic resources allocation units distribute crosses the radio resource control RRC signaling and physical downlink control channel PDCCH sends to described terminal.
Described resource information transmitting element 51 comprises the first transmitting element and the second transmitting element, wherein:
The first transmitting element is used for the long-term information of described periodic feedback resource is carried at the RRC signaling, and this RRC signaling is sent to described terminal;
The second transmitting element is used for that the moment of feedback transmission sends to described terminal for the first time in scheduling with the schedule information of described periodic feedback resource by PDCCH.
This base station further comprises:
The transmitting element 52 that releases order is used for that periodic feedback is discharged indication information and is carried at the RRC signaling, and this RRC signaling is sent to described terminal.
Described the second transmitting element is used for:
The schedule information of described periodic feedback resource is carried among the descending control message DCI; Utilize the described DCI of pre-assigned special RNTI scrambling; DCI after the scrambling is sent to described terminal by described PDCCH; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback.
Described the second transmitting element is used for:
Descending control message DCI is carried out format content configuration, the schedule information of described periodic feedback resource is carried among the DCI after the configuration, and this DCI is sent to described terminal by described PDCCH.
Described the second transmitting element is used for: add the differential threshold information that is used for distinguishing described DCI and other DCI at DCI; Perhaps, the value of setting field is set to be used to the numerical value of distinguishing described DCI and other DCI among the DCI.
Described setting field comprises: the MCS field among the described DCI or the MCS field among the described DCI and PRB field.
This base station further comprises:
Resource information is retransmitted and to be sent unit 53, and the information exchange that is used for the periodic feedback resource that will reconfigure crosses the RRC signaling and PDCCH sends to described terminal.
Referring to Fig. 6, the embodiment of the invention also provides a kind of terminal, can be applied in the system of periodic feedback information, and this terminal comprises schedule information receiving element 60 and feedback of channel information unit 61, wherein:
Resource information receiving element 60 be used for to receive the information for the periodic feedback resource of this terminal distribution that send by RRC signaling and PDCCH the base station;
Described resource information receiving element 60 is used for: receive the RRC signaling of the long-term information of carrying described periodic feedback resource of sending the base station and receive the base station at the scheduling PDCCH of the schedule information that carries described periodic feedback resource sent of the moment of feedback transmission for the first time; Accordingly, described periodic feedback unit 61 is used for: the moment of feedback transmission begins, adopts the feedback time cycle that described long-term information comprises and utilizes the represented physical resource of physical resource information that comprises the described schedule information to send periodic feedback information to described base station from described first time.
This terminal further comprises release order receiving element 62 and information feedback releasing unit 63, wherein:
The receiving element 62 that releases order is used for receiving the RRC signaling that periodic feedback discharges indication information of carrying that the base station sends;
Information feedback releasing unit 63 is used for discharging indication information according to described periodic feedback, indicates described periodic feedback unit to stop to send periodic feedback information to described base station, and property deenergized period feedback resources.
Described resource information receiving element 60 is used for:
After detecting the DCI that utilizes pre-assigned special RNTI scrambling that sends the base station at described PDCCH, from this DCI signaling, read the schedule information of described periodic feedback resource; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback.
Described resource information receiving element 60 is used for:
After detecting the DCI with specific format content that sends the base station at described PDCCH, from this DCI signaling, read the schedule information of described periodic feedback resource.
DCI with specific format content comprises: carry for distinguishing the DCI of this DCI with the differential threshold information of other DCI; Perhaps, the value of setting field is set to for distinguishing the DCI of this DCI with the numerical value of other DCI.
Described setting field comprises: the MCS field among the described DCI or the MCS field among the described DCI and PRB field.
This terminal further comprises resource information reclosing receipts unit 64 and the heavy feedback unit 65 of periodicity, wherein:
Periodically heavy feedback unit 65 is used for the information according to the described periodic feedback resource that reconfigures, and sends periodic feedback information to described base station on the periodic feedback resource that this reconfigures.
To sum up, beneficial effect of the present invention comprises:
In the scheme that the embodiment of the invention provides, to cross the RRC signaling and PDCCH sends to terminal for the information exchange of the periodic feedback resource of terminal distribution by the base station, terminal is according to the information of the periodic feedback resource that receives, on this periodic feedback resource, send periodic feedback information to the base station, thereby realized carrying out the periodic feedback scheduling of resource in the LTE-A system, and terminal is carried out the scheme of periodic feedback according to this scheduling.Terminal is carried out the scheme of periodic feedback in the LTE-A system.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1. the method for a transmission cycle feedback information is characterized in that, the method comprises:
The base station is terminal distribution periodic feedback resource;
The information exchange of described periodic feedback resource is crossed the radio resource control RRC signaling in the base station and physical downlink control channel PDCCH sends to described terminal, is used to indicate described terminal and sends periodic feedback information to described base station according to the information of described periodic feedback resource on this periodic feedback resource;
Described base station is crossed RRC signaling and PDCCH with the information exchange of described periodic feedback resource and sent to described terminal and comprise: described base station is carried at the long-term information of described periodic feedback resource and sends to described terminal in the RRC signaling; Described base station sends to described terminal in the moment of the scheduling feedback transmission first time by PDCCH with the schedule information of described periodic feedback resource;
Described terminal is comprising sending periodic feedback information to described base station on this periodic feedback resource according to the information of described periodic feedback resource: after described terminal received described RRC signaling and described PDCCH, the first feedback of moment correspondence of feedback transmission constantly began, adopts the feedback time cycle that comprises the described long-term information and utilizes the represented physical resource of the physical resource information that comprises in the described schedule information to described base station transmission periodic feedback information from described first time;
Described base station sends to described terminal with the schedule information of described periodic feedback resource by PDCCH and comprises: described base station is carried at the schedule information of described periodic feedback resource among the descending control message DCI; Utilize the described DCI of pre-assigned special Radio Network Temporary Identifier RNTI scrambling; DCI after the scrambling is sent to described terminal by described PDCCH; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback; Described terminal receives described PDCCH and comprises: after described terminal detects the DCI that utilizes described special RNTI scrambling at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling; Perhaps, described base station sends to described terminal with the schedule information of described periodic feedback resource by PDCCH and comprises: the format content configuration is carried out with descending control message DCI in described base station, the schedule information of described periodic feedback resource is carried among the DCI after the configuration, and this DCI is sent to described terminal by described PDCCH; Described terminal receives described PDCCH and comprises: after described terminal detects the DCI with described format content at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling.
2. the method for claim 1, the long-term information that described RRC signaling is carried comprises:
Feedback content type and/or feedback time cycle.
3. the method for claim 1, the schedule information that described PDCCH carries comprises:
Physical Resource Block PRB number, PRB position, modulation coding mode and other physical layer map informations.
4. the method for claim 1 is characterized in that, the information exchange of this periodic feedback resource is crossed after RRC signaling and PDCCH send to described terminal in the base station, and the method further comprises:
Described base station discharges indication information with periodic feedback and is carried in the RRC signaling, and this RRC signaling is sent to described terminal;
Described terminal discharges indication information according to the periodic feedback of carrying in the described RRC signaling, stops to send periodic feedback information to described base station, and property deenergized period feedback resources.
5. the method for claim 1 is characterized in that, described base station is carried out the format content configuration with DCI and comprised:
In DCI, add the differential threshold information that is used for distinguishing described DCI and other DCI; Perhaps,
The value of setting field among the DCI is set to be used to the numerical value of distinguishing described DCI and other DCI.
6. method as claimed in claim 5 is characterized in that, described setting field comprises:
Modulation coding mode MCS field or MCS field and Physical Resource Block PRB field.
7. such as arbitrary described method among the claim 1-6, it is characterized in that the information exchange of this periodic feedback resource is crossed after RRC signaling and PDCCH send to described terminal in the base station, the method further comprises:
The information exchange of the periodic feedback resource that reconfigures is crossed the RRC signaling in described base station and PDCCH sends to described terminal;
Described terminal sends periodic feedback information to described base station according to the information of the described periodic feedback resource that reconfigures on the periodic feedback resource that this reconfigures.
8. the system of a transmission cycle feedback information is characterized in that, this system comprises:
The base station is used to terminal distribution periodic feedback resource, and the information exchange of this periodic feedback resource is crossed the radio resource control RRC signaling and physical downlink control channel PDCCH sends to described terminal;
Terminal is used for the information according to described periodic feedback resource, sends periodic feedback information to described base station on this periodic feedback resource;
Described base station is used for: the long-term information of described periodic feedback resource is carried at the RRC signaling sends to described terminal, the moment of feedback transmission sends to described terminal by PDCCH for the first time in scheduling with the schedule information of described periodic feedback resource;
Described terminal is used for: after receiving described RRC signaling and described PDCCH, the moment of feedback transmission begins, adopts the feedback time cycle that comprises the described long-term information and utilizes the represented physical resource of physical resource information that comprises in the described schedule information to send periodic feedback information to described base station from described first time;
Described base station is used for: the schedule information of described periodic feedback resource is carried at descending control message DCI; Utilize the described DCI of pre-assigned special Radio Network Temporary Identifier RNTI scrambling; DCI after the scrambling is sent to described terminal by described PDCCH; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback; Described terminal is used for: after detecting the DCI that utilizes described special RNTI scrambling at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling; Perhaps, described base station is used for: descending control message DCI is carried out format content configuration, the schedule information of described periodic feedback resource is carried among the DCI after the configuration, and this DCI is sent to described terminal by described PDCCH; Described terminal is used for: after detecting the DCI with described format content at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling.
9. system as claimed in claim 8 is characterized in that, described base station is further used for:
The information exchange of the periodic feedback resource that reconfigures is crossed the RRC signaling and PDCCH sends to described terminal;
Described terminal is further used for:
According to the information of the described periodic feedback resource that reconfigures, on the periodic feedback resource that this reconfigures, send periodic feedback information to described base station.
10. a base station is characterized in that, this base station comprises:
The periodic resources allocation units are used to terminal distribution periodic feedback resource;
The resource information transmitting element, the information exchange that is used for periodic feedback resource that described periodic resources allocation units are distributed crosses the radio resource control RRC signaling and physical downlink control channel PDCCH sends to described terminal;
Described resource information transmitting element comprises:
The first transmitting element is used for the long-term information of described periodic feedback resource is carried at the RRC signaling, and this RRC signaling is sent to described terminal;
The second transmitting element is used for the schedule information of described periodic feedback resource is sent to described terminal in the moment of the scheduling feedback transmission first time by PDCCH;
Described the second transmitting element is used for: the schedule information of described periodic feedback resource is carried at descending control message DCI; Utilize the described DCI of pre-assigned special Radio Network Temporary Identifier RNTI scrambling; DCI after the scrambling is sent to described terminal by described PDCCH; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback; Perhaps, described the second transmitting element is used for: descending control message DCI is carried out format content configuration, the schedule information of described periodic feedback resource is carried among the DCI after the configuration, and this DCI is sent to described terminal by described PDCCH.
11. base station as claimed in claim 10 is characterized in that, this base station further comprises:
The transmitting element that releases order is used for that periodic feedback is discharged indication information and is carried at the RRC signaling, and this RRC signaling is sent to described terminal.
12. such as claim 10 or 11 described base stations, it is characterized in that this base station further comprises:
Resource information is retransmitted and to be sent the unit, and the information exchange that is used for the periodic feedback resource that will reconfigure crosses the RRC signaling and PDCCH sends to described terminal.
13. a terminal is characterized in that, this terminal comprises:
The resource information receiving element be used for to receive the information for the periodic feedback resource of this terminal distribution that send by radio resource control RRC signaling and physical downlink control channel PDCCH the base station;
The periodic feedback unit is used for the information according to described periodic feedback resource, sends periodic feedback information to described base station on this periodic feedback resource;
Described resource information receiving element is used for:
Receive the RRC signaling of the long-term information of carrying described periodic feedback resource of sending the base station and receive the base station at the scheduling PDCCH of the schedule information that carries described periodic feedback resource sent of the moment of feedback transmission for the first time;
Described periodic feedback unit is used for:
The moment of feedback transmission begins, adopts the feedback time cycle that comprises the described long-term information and utilizes the represented physical resource of physical resource information that comprises in the described schedule information to send periodic feedback information to described base station from described first time;
Described resource information receiving element is used for: after detecting the DCI that utilizes pre-assigned special Radio Network Temporary Identifier RNTI scrambling that sends the base station at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling; Described special RNTI is exclusively used in the RNTI that the described terminal of scheduling is carried out periodic feedback; Perhaps, described resource information receiving element is used for: after detecting the DCI with specific format content that sends the base station at described PDCCH, read the schedule information of described periodic feedback resource from this DCI signaling.
14. terminal as claimed in claim 13 is characterized in that, this terminal further comprises:
The receiving element that releases order is used for receiving the RRC signaling that periodic feedback discharges indication information of carrying that the base station sends;
Information feedback releasing unit is used for discharging indication information according to described periodic feedback, indicates described periodic feedback unit to stop to send periodic feedback information to described base station, and property deenergized period feedback resources.
15. such as claim 13 or 14 described terminals, it is characterized in that this terminal further comprises:
The unit is received in the resource information reclosing, is used for receiving the information of the periodic feedback resource that reconfigures of sending by RRC signaling and PDCCH the base station;
Periodically heavy feedback unit is used for the information according to the described periodic feedback resource that reconfigures, and sends periodic feedback information to described base station on the periodic feedback resource that this reconfigures.
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| CN102868499B (en) * | 2011-07-06 | 2017-04-12 | 华为技术有限公司 | Indication information transmission method, user equipment and base station equipment |
| CN102932111B (en) * | 2011-08-10 | 2017-04-12 | 中兴通讯股份有限公司 | Reporting method and device for wireless channel state indicator |
| CN103036655B (en) * | 2011-09-30 | 2018-06-19 | 中兴通讯股份有限公司 | A kind of method and apparatus for realizing CSI feedback |
| CA3007290C (en) | 2015-12-03 | 2021-02-16 | Huawei Technologies Co., Ltd. | Control information format processing method, base station, and user equipment |
| CN106937325B (en) | 2015-12-31 | 2020-11-27 | 华为技术有限公司 | Feedback method of channel measurement information, user equipment and base station |
| CN110034849B (en) * | 2018-01-12 | 2021-01-15 | 华为技术有限公司 | Data transmission method and equipment |
| WO2019227430A1 (en) * | 2018-05-31 | 2019-12-05 | 北京小米移动软件有限公司 | Channel monitoring method, device, system and storage medium |
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