CN101998634A - 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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- CN101998634A CN101998634A CN2009100904823A CN200910090482A CN101998634A CN 101998634 A CN101998634 A CN 101998634A CN 2009100904823 A CN2009100904823 A CN 2009100904823A CN 200910090482 A CN200910090482 A CN 200910090482A CN 101998634 A CN101998634 A CN 101998634A
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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 physical resource 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 also discloses 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 long term 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) transmission and (transmission/reception) technology of reception increase the covering of high data rate, improve the throughput of cell edge and/or increase throughput of system.So-called coordinate multipoint is meant the collaborative transmitting/receiving data that participates in a UE of a plurality of transmission points that separate on the geographical position, and these a plurality of transmission 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 handles the downstream signal or the data of a plurality of sub-districts; Up CoMP refers to that a plurality of sub-districts receive the upstream data of same UE, and merges the processing decoding by certain technology.Descending CoMP be divided into Combined Treatment (Joint Processing, JP) and cooperative scheduling/collaborative wave beam forming (CoordinatedScheduling/Beamforming, CS/CB).Under the Combined Treatment mode, have a plurality of sub-districts and participate in downlink data transmission, many cell transmission mode is called joint transmission (Joint Transmission) again, and single cell transmission mode is called dynamic cell again and selects (Dynamic Cell Selection); Under the CS/CB, have only 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 measure the channel quality of each sub-district and feed back.The feedback content type that defines among the CoMP has at present:
The first, the explicit feedback type, promptly explicit channel status/statistical message feedback, the message of feedback does not carry out any transmission or receives handling;
Second, the implicit feedback type, it is implicit information channel state/statistical message feedback, feed back treated information, as channel quality indication (Channel Quality Indication, CQI) information, precoding matrix indicators (Precoding Matrix Indicator, PMI), the order indication (Rank Indication, RI) etc.
The 3rd, Sounding Reference Signal (SRS) type is promptly 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 scheduling scheme at present, and then make UE can't carry out the feedback of multi-cell channel quality information at the descending CoMP feedback of LTE-A system.
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, this method comprises:
The base station is a terminal distribution periodic feedback resource;
The base station sends to described terminal with the information of described periodic feedback resource by radio resource control RRC signaling and physical downlink control channel PDCCH, is used to indicate described terminal to send periodic feedback information to described base station according to the information of described periodic feedback resource on this periodic feedback resource.
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 of this periodic feedback resource is sent to described terminal by radio resource control RRC signaling and physical downlink control channel PDCCH;
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.
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 that is used for periodic feedback resource that described periodic resources allocation units are distributed sends to described terminal by radio resource control RRC signaling and physical downlink control channel PDCCH.
A kind of terminal, this terminal comprises:
The resource information receiving element is used 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.
Among the present invention, to send to terminal by RRC signaling and PDCCH for the information 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 sends periodic feedback information to the base station according to the information of the periodic feedback resource that receives on this periodic feedback resource.
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 a terminal distribution periodic feedback resource, and the information of this periodic feedback resource is sent to terminal by Radio Resource control (RRC) signaling and Physical Downlink Control Channel (PDCCH);
Step 11: terminal sends periodic feedback information to the base station according to the information of the periodic feedback resource that receives on this periodic feedback resource.
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 Physical Resource Block (PRB) number, PRB position, modulation coding mode physical resource information such as (MCS) and other physical layer map informations.Wherein, the feedback content type can be explicit feedback type, implicit feedback type, SRS type etc.The periodic feedback information of explicit feedback type correspondence comprises any information of not carrying out any transmission or receiving processing.The periodic feedback information of implicit feedback type correspondence comprises CQI, PMI, RI information etc.The periodic feedback information of SRS type correspondence 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 messages (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 periodic feedback information of the represented physical resource of this physical resource information to this feedback content type correspondence 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 an 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 sub-districts 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 to the base station by physical uplink shared control channel (PUSCH).
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 send periodic feedback information to the base station, and property deenergized period feedback resources.
In order to make terminal carry 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, the information of the periodic feedback resource that reconfigures is sent to terminal by new RRC signaling and PDCCH, terminal sends periodic feedback information to the base station according to the information of the periodic feedback resource that reconfigures on the periodic feedback resource that this reconfigures.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 begins, adopts feedback time cycle of comprising the long-term information that reconfigures constantly, 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 RRC signaling and the inefficacy of the DCI on the PDCCH that receive of base station before.
Preferable, because PDCCH is used to dispatch 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 medium access control (MAC) layer to participate in, and mixed automatic repeat request (HARQ) process is arranged.Periodic feedback transmission of 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 and to be used to dispatch the periodic feedback on the PUSCH and to be used to dispatch signaling on the PDCCH of routine data.The differentiating method that is used for signaling property dispatching cycle feedback, that transmit on PDCCH has following several:
First kind: use special RNTI sign to distinguish.That is, the base station is carried at the schedule information of periodic feedback resource among the DCI; Utilize pre-assigned, as to be exclusively used in dispatch terminal periodic feedback information this DCI of special Radio Network Temporary Identifier (RNTI) scrambling then, 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 to discern the DCI that 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 at 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 distribute two RNTI at least for each UE, promptly conventional C-RNTI and comp-RNTI.
Second kind, utilize 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 to distinguish the DCI (this DCI) that carries first feedback time and physical resource information and other DCI in DCI; Perhaps, the value of setting field among the DCI is set to be used to distinguish the numerical value of this DCI and other DCI.This setting field comprises: the MCS field among the DCI, PRB field etc.Be analyzed as follows:
PDCCH is used for 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 that is used 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, and content relevant with the periodic feedback scheduling of resource in its essential information comprises: and PRB distribution, MCS, redundancy versions (redundancy version, RV), CQI asks (CQI request).
Wherein, MSC and RV territory be 5bit altogether, the MCS shown in the corresponding following table, RV and TBS information.TBS index be used to specify the transmission block size of determining size (Transport block size, TBS) so that get the transmission 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 1, and PRB distributes the N of appointment
PRB≤ 4, represent to have only the CQI feedback in this PUSCH transmission.
Expand to the CoMP feedback of LTE-A, CQI request territory can change feedback request (feedbackrequest) 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 to distinguish 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 D CI is the DCI that is used for the dispatch terminal periodic feedback.
Among the present invention, the example of RRC signaling design is as follows:
compFeedback-PUSCHPeriodic::＝CHOICE{
release NULL，
setup SEQUENCE{
PUSCH-ResourceInterval XXX, // feedback time the cycle
CompFeedback-FormatIndicator XXX, // feedback content type
// other necessary informations
}
}
Feedback content type and feedback time cycle, also available other modes were represented, for example constructed a feedback content type and the form in feedback time cycle, stipulated to adopt which kind of mode in the form with the mode of sign (index) in the RRC signaling.
With specific embodiment the inventive method is described below:
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 period 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 period 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 the corresponding periodic feedback information of 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 period 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 period 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 the corresponding periodic feedback information of 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 after being about to upgrade sends to UE by PDCCH;
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 period 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 period 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 the corresponding periodic feedback information of feedback content type to the base station;
Step 33: the feedback content type of base station reprovision periodic feedback and feedback time cycle, promptly the base station sends to UE with the feedback content type and the feedback time period T 1 of reprovision by the RRC signaling; After UE receives this RRC signaling, stop to send periodic feedback information, up to receive new schedule information from PDCCH to the base station;
Step 34:RRC signaling to the periodic feedback reprovision after, the PDCCH resource allocation in early stage was lost efficacy, need activate the feedback first time behind the reprovision again, promptly 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 once more, according to the feedback content type of carrying in the RRC signaling that receives in the step 33 and feedback time period 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 period 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 period 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 the corresponding periodic feedback information of 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 send periodic feedback information to the base station, and property deenergized period feedback resources.
Certainly, the base station sends to terminal and carries the time that periodic feedback discharges the RRC signaling of indication information, 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 send periodic feedback information, simultaneously property deenergized period feedback resources to the base station.
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 sub-districts 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:
Base station 40 is used to terminal distribution periodic feedback resource, and the information of this periodic feedback resource is sent to described terminal by radio resource control RRC signaling and physical downlink control channel PDCCH;
Terminal 41 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 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 of the periodic feedback resource that reconfigures is sent to described terminal by RRC signaling and PDCCH; 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 that is used for the periodic feedback resource of periodic resources allocation units distribution sends to described terminal by radio resource control RRC signaling and physical downlink control channel PDCCH.
Described resource information transmitting element 51 comprises first transmitting element and second transmitting element, wherein:
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;
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 second transmitting element is used for:
The schedule information of described periodic feedback resource is carried among the descending control messages 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 second transmitting element is used for:
Descending control messages 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 second transmitting element is used for: add the differential threshold information that is used to distinguish described DCI and other DCI at DCI; Perhaps, the value of setting field among the DCI is set to be used to distinguish the numerical value of described DCI and other DCI.
Described setting field comprises: the MCS field among the described DCI or 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 that is used for the periodic feedback resource that will reconfigure sends to described terminal by RRC signaling and PDCCH.
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 is used 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 sending the base station of carrying described periodic feedback resource 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 feedback information releasing unit 63, wherein:
The receiving element 62 that releases order is used to receive the RRC signaling that periodic feedback discharges indication information of carrying that the base station sends;
Feedback information 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 that sends the base station at described PDCCH, from this DCI signaling, read the schedule information of described periodic feedback resource with specific format content.
DCI with specific format content comprises: carry the DCI that is used to distinguish this DCI and the differential threshold information of other DCI; Perhaps, the value of setting field is set to be used to distinguish the DCI of this DCI and the numerical value of other DCI.
Described setting field comprises: the MCS field among the described DCI or MCS field among the described DCI and PRB field.
This terminal further comprises resource information reclosing receipts unit 64 and periodicity emphasis feedback unit 65, wherein:
Periodicity emphasis 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 send to terminal by RRC signaling and PDCCH for the information 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 (27)
1. the method for a transmission cycle feedback information is characterized in that, this method comprises:
The base station is a terminal distribution periodic feedback resource;
The base station sends to described terminal with the information of described periodic feedback resource by radio resource control RRC signaling and physical downlink control channel PDCCH, is used to indicate described terminal to send periodic feedback information to described base station according to the information of described periodic feedback resource on this periodic feedback resource.
2. the method for claim 1 is characterized in that, described base station sends to described terminal with the information of described periodic feedback resource by RRC signaling and PDCCH and comprises:
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.
3. method as claimed in claim 2, described terminal comprises to described base station transmission periodic feedback information 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 began, adopts the feedback time cycle that comprises the described long-term information constantly 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.
4. as claim 2 or 3 described methods, the long-term information that described RRC signaling is carried comprises:
Feedback content type and/or feedback time cycle.
5. as claim 2 or 3 described methods, the schedule information that described PDCCH carries comprises:
Physical Resource Block PRB number, PRB position, modulation coding mode and other physical layer map informations.
6. as claim 1 or 2 or 3 described methods, it is characterized in that after the base station sent to described terminal with the information of this periodic feedback resource by RRC signaling and PDCCH, this method further comprised:
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.
7. method as claimed in claim 3 is characterized in that, 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 messages 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, from this DCI signaling, read the schedule information of described periodic feedback resource.
8. method as claimed in claim 3 is characterized in that, described base station sends to described terminal with the schedule information of described periodic feedback resource by PDCCH and comprises:
Format content configuration is carried out with descending control messages 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, from this DCI signaling, read the schedule information of described periodic feedback resource.
9. method as claimed in claim 8 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 to distinguish described DCI and other DCI; Perhaps,
The value of setting field among the DCI is set to be used to distinguish the numerical value of described DCI and other DCI.
10. method as claimed in claim 9 is characterized in that, described setting field comprises:
Modulation coding mode MCS field or MCS field and Physical Resource Block PRB field.
11., it is characterized in that after the base station sent to described terminal with the information of this periodic feedback resource by RRC signaling and PDCCH, this method further comprised as arbitrary described method among claim 1-3, the 7-10:
Described base station sends to described terminal with the information of the periodic feedback resource that reconfigures by RRC signaling and PDCCH;
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.
12. 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 of this periodic feedback resource is sent to described terminal by radio resource control RRC signaling and physical downlink control channel PDCCH;
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.
13. system as claimed in claim 12 is characterized in that, described base station is used for:
The long-term information of described periodic feedback resource is carried at sends to described terminal in the RRC signaling, 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.
14. system as claimed in claim 13 is characterized in that, 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.
15., it is characterized in that described base station is further used for as claim 12 or 13 or 14 described systems:
The information of the periodic feedback resource that reconfigures is sent to described terminal by RRC signaling and PDCCH;
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.
16. 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 that is used for periodic feedback resource that described periodic resources allocation units are distributed sends to described terminal by radio resource control RRC signaling and physical downlink control channel PDCCH.
17. base station as claimed in claim 16 is characterized in that, described resource information transmitting element comprises:
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;
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.
18., it is characterized in that this base station further comprises as claim 16 or 17 described base stations:
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.
19., it is characterized in that described second transmitting element is used for as base station as described in the claim 17:
The schedule information of described periodic feedback resource is carried among the descending control messages 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.
20. base station as claimed in claim 17 is characterized in that, described second transmitting element is used for:
Descending control messages 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.
21., it is characterized in that this base station further comprises as claim 16 or 17 or 19 or 20 described base stations:
Resource information is retransmitted and to be sent the unit, and the information that is used for the periodic feedback resource that will reconfigure sends to described terminal by RRC signaling and PDCCH.
22. a terminal is characterized in that, this terminal comprises:
The resource information receiving element is used 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.
23. terminal as claimed in claim 22 is characterized in that, described resource information receiving element is used for:
Receive the RRC signaling of the long-term information of sending the base station of carrying described periodic feedback resource 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.
24., it is characterized in that this terminal further comprises as claim 22 or 23 described terminals:
The receiving element that releases order is used to receive the RRC signaling that periodic feedback discharges indication information of carrying that the base station sends;
The feedback information 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.
25. terminal as claimed in claim 23 is characterized in that, 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, 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.
26. terminal as claimed in claim 23 is characterized in that, described resource information receiving element is used for:
After detecting the DCI that sends the base station at described PDCCH, from this DCI signaling, read the schedule information of described periodic feedback resource with specific format content.
27., it is characterized in that this terminal further comprises as claim 22 or 23 or 25 or 26 described terminals:
The unit is received in the resource information reclosing, is used to receive the information of the periodic feedback resource of sending by RRC signaling and PDCCH the base station that reconfigures;
The periodicity emphasis 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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| CN 200910090482 CN101998634B (en) | 2009-08-13 | 2009-08-13 | Method, system and equipment for transmitting periodical feedback information |
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