CN101917259B - The triggering method of aperiodic channel status information reports and base station - Google Patents
The triggering method of aperiodic channel status information reports and base station Download PDFInfo
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- CN101917259B CN101917259B CN201010259011.3A CN201010259011A CN101917259B CN 101917259 B CN101917259 B CN 101917259B CN 201010259011 A CN201010259011 A CN 201010259011A CN 101917259 B CN101917259 B CN 101917259B
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Abstract
The invention discloses the triggering method of a kind of aperiodic channel status information reports and base station, wherein, described method includes: base station sends the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when described trigger command triggers CSI report aperiodic, described subscriber equipment is indicated to feed back CSI report aperiodic of the component carrier specified by described PDCCH. By the present invention, improve the motility triggering aperiodic channel status information CSI report, reduce the trigger delay of aperiodic channel status information CSI report, saved triggers signaling overhead and transport overhead.
Description
Technical field
The present invention relates to the communications field, in particular to triggering method and the base station of a kind of aperiodic channel status information reports.
Background technology
At third generation partner program long evolving system (The3rdGenerationPartnershipProjectLongTermEvolution, in 3GPPLTF), subscriber equipment (UserEquipment, UE) channel condition information (ChannelStateInformation of down channel is obtained according to downlink reference signal (referencesignal), CSI), then, by the CSI feedback of acquisition to base station (eNodeB, eNB). Base station is according to the UE CSI fed back, it is determined that be sent to modulation coding mode and the physical resource position of the data of UE and transmission mode. In LTE system, CSI includes three kinds of forms: channel quality instruction (ChannelsQualityIndication, CQI), pre-coding matrix instruction (Pre-codingMatrixIndicator, PMI), order indicate (RankIndicator, RI).
In LTE system, the CSI feedback of down channel is had periodic feedback and non-periodic feedback two ways by UE, is called periodic channel status information reporting (periodicCSIreporting) and aperiodic channel status information reports (aperiodicCSIreporting). So-called cycle CSI report, refers to that UE configures according to base station, the feedback CSI in cycle; What is called CSI report aperiodic, refers to that base station is passed through to trigger signaling and triggered a UE CSI of feedback. For cycle CSI report, in general, certain subframe (subframe) is not if upper UE sends Physical Uplink Shared Channel (PhysicalUplinkSharedChannel, PUSCH), CSI row physically controls the upper transmission of channel (PhysicalUplinkControl, PUCCH); If UE sends PUSCH, CSI and is carried on PUSCH and transmits. For CSI report aperiodic, then only transmit on PUSCH.
In LTE system, base station sends PUSCH by certain UE of uplink scheduling authorization (Uplinkgrant, ULgrant) signaling scheduling. Uplink scheduling authorization signaling can by having Downlink Control Information (DownlinkControlInformation, DCI) Physical Downlink Control Channel (PhysicalDownlinkControlChannel, PDCCH) of form 0 (format0) is sent to scheduled UE. DCIformat0 there is 1 bit carry out CSI report aperiodic for triggering UE, be called channel quality instruction request (CQIrequest).
If UE detects the PDCCH with DCIformat0 form belonging to it, then send PUSCH according to the ULgrant wherein comprised. If the 1 bit CQIrequest that UE detects in DCIformat0 is set to ' 1 ', then in the PUSCH that this DCIformat0 is scheduled, send CSI report aperiodic.
Senior Long Term Evolution (LTE-Advanced, LTE-A) system is the evolution system of future generation of LTE system, adopts carrier aggregation (CarrierAggregation, CA) technology extension transmission bandwidth, supports bigger hardware circuit solution. Fig. 1 is the lte-a system carrier aggregation schematic diagram according to correlation technique. As it is shown in figure 1, the carrier wave of each polymerization is called one " component carrier " (ComponentCarrier, CC). Multiple component carriers may be located at same frequency range (frequencyband), it is also possible to is positioned at different frequency range.
When base station be user device configuration (configure) or activate (activate) one or more component carrier be used for sending downstream signal time, subscriber equipment needs (configured) of described configuration or (activated) each component carrier feedback CSI of activating. According in LTE system aperiodic CSI report triggering mode, to time division duplex (TimeDivisionDuplex, TDD) system, base station to be triggered subscriber equipment and be fed back CSI report aperiodic of certain component carrier, is necessary for dispatching described subscriber equipment and sends PUSCH on described component carrier; To FDD (FrequencyDivisionDuplex, FDD) system, base station to be triggered subscriber equipment and be fed back certain downlink component carrier (DownlinkComponentwCarrier, DLCC) CSI report aperiodic, it is necessary for dispatching described subscriber equipment and sends PUSCH on the upstream components carrier wave (UplinkComponentCarrier, ULCC) that described downlink component carrier is corresponding. And then being used for dispatching in the PDCCH with specific descending control information format (DCIformat) of described PUSCH, send 1bit trigger command, i.e. CQIrequest=1, to trigger CSI report aperiodic to described component carrier.
In addition, in LTE-AFDD system, each downlink component carrier has a upstream components carrier wave corresponding with it. The corresponding relation of this up-downgoing component carrier is set in advance, and by base station notifying user equipment.
Base station can be user device configuration or activate different number of up-downgoing component carrier, as shown in Figure 2. Wherein, a pair specific (UE-specific) principal component carrier wave (PrimaryComponentCarrier, PCC) of subscriber equipment is at least included, including descending PCC and corresponding up PCC. The principal component carrier wave of different user devices is probably different. Except a pair principal component carrier wave, base station can be also user device configuration or activate one or more descending from component carrier (SecondaryComponentCarrier), and one or more up from component carrier.
When triggering UE and reporting CSI aperiodic, likely because up-downgoing business is asymmetric, such as, base station sends data to subscriber equipment on multiple component carriers, it is likely to need relatively frequently to trigger CSI report aperiodic of each component carrier, then, base station needs relatively frequently scheduling UE to send PUSCH on corresponding component carrier, and actually, except CSI report aperiodic triggered, UE is likely to not too many upstream data to be needed to be carried on and is sent to base station on PUSCH, thus causing the wasting of resources. It is also possible to base station and to UE configuration or have activated certain downlink component carrier DLCC, but do not give this user device configuration or activate upstream components carrier wave ULCC corresponding for this DLCC, and according in LTE system aperiodic CSI report triggering mode, base station cannot trigger UE feed back DLCC CSI report aperiodic.
To sum up, in lte-a system, existing aperiodic CSI report triggering mode underaction, it is possible to cause system resource waste or cause CSI report aperiodic of the UE DLCC that cannot feed back.
Summary of the invention
Present invention is primarily targeted at triggering method and base station that a kind of aperiodic channel status information reports is provided, with the problem at least solving the triggering mode underaction of CSI report above-mentioned existing aperiodic.
According to an aspect of the present invention, provide the triggering method of a kind of aperiodic channel status information CSI report, including: base station sends the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when this trigger command triggers CSI report aperiodic, subscriber equipment is indicated to feed back CSI report aperiodic of the component carrier specified by PDCCH.
According to a further aspect in the invention, provide a kind of base station, including: instruction module, for sending the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when trigger command triggers CSI report aperiodic, subscriber equipment is indicated to feed back CSI report aperiodic of the component carrier specified by PDCCH.
Pass through the present invention, base station is adopted to indicate UE to feed back CSI aperiodic of the one or more component carriers specified in CSI report instruction aperiodic, the problem solving the triggering mode underaction of correlation technique CSI report aperiodic, and then reached to improve the motility triggering aperiodic channel status information CSI report, reduce the trigger delay of aperiodic channel status information CSI report, save the effect of triggers signaling overhead and transport overhead.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the schematic diagram of a kind of lte-a system carrier aggregation according to correlation technique;
Fig. 2 is the schematic diagram of the carrier aggregation of a kind of one subscriber equipment of LTE-AFDD system according to correlation technique;
Fig. 3 is the flow chart of steps of the triggering method of a kind of aperiodic channel status information reports according to embodiments of the present invention;
Fig. 4 is the structured flowchart of a kind of base station according to embodiments of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments. It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
In following example of the present invention, base station uses transmission CSI report trigger command aperiodic of the PDCCH with specific descending control information format to UE, as CQIrequest=1 in the PDCCH with specific Downlink Control Information, this PDCCH triggers UE and feeds back CSI report aperiodic of or a group component carrier wave. Wherein, specific descending control information format is the descending control information format for dispatching PUSCH, and it includes but not limited to DCIformat0.
With reference to Fig. 3, it is shown that the flow chart of steps of the triggering method of a kind of aperiodic channel status information reports according to embodiments of the present invention, comprise the following steps:
Step S302: base station sends the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when described trigger command triggers CSI report aperiodic, described subscriber equipment is indicated to feed back CSI report aperiodic of the component carrier specified by described PDCCH.
In this step, base station uses one-component carrier wave to send this PDCCH, comprises CSI report trigger command aperiodic in this PDCCH, and base station sends this PDCCH to UE. The one-component carrier wave that base station uses can be the component carrier in TDD system, it is also possible to for the downlink component carrier in FDD system. When this trigger command triggers CSI report aperiodic, PDCCH is passed through in base station, and instruction UE reports CSI report aperiodic of the component carrier specified. After UE receives this PDCCH, CSI report aperiodic of the component carrier that feedback is specified. The component carrier specified can be appointed as the component carrier that the component carrier of the PUSCH scheduled with sending this PDCCH is corresponding, for sending one group of downlink component carrier belonging to the downlink component carrier corresponding to upstream components carrier wave of this PUSCH or this downlink component carrier in FDD system, or a group component carrier wave belonging to the component carrier of this PUSCH of transmission or this component carrier in TDD system. It is of course also possible to for UE configuration or any one or the group component carrier wave that activate.
In correlation technique, aperiodic CSI report triggering mode underaction, it is possible to cause system resource waste or cause CSI report aperiodic of the UE DLCC that cannot feed back. Pass through the present embodiment, user equipment (UE) is indicated to feed back CSI report aperiodic of which or which component carrier by base station, it is effectively increased the motility of aperiodic channel status information reports, only trigger CSI report aperiodic of the component carrier specified, reduce triggers signaling overhead and the transport overhead of aperiodic channel status information reports; And once trigger CSI report aperiodic of multiple component carrier, then effectively reduce triggers signaling overhead and the trigger delay of aperiodic channel status information reports.
Method one
In lte-a system, base station uses transmission CSI report trigger command aperiodic of the PDCCH with specific descending control information format to UE, as CQIrequest=1 in the described PDCCH with specific descending control information format, trigger UE and feed back CSI report aperiodic. The PDCCH scheduling UE with specific descending control information format sends PUSCH on one-component carrier wave. As CQIrequest=1 in PDCCH, PUSCH scheduled for this PDCCH sends on which component carrier, indicates this trigger command to trigger CSI report aperiodic of which or which group component carrier wave. In FDD system, as CQIrequest=1 in PDCCH, this PDCCH dispatches PUSCH and sends on ULCC1, it indicates that trigger CSI report aperiodic of the DLCC1 corresponding with ULCC1.
Send the component carrier of described PUSCH and trigger aperiodic to be feedback CSI report the corresponding relation of component carrier be set in advance, or configured by high level.
After UE receives PDCCH, if CQIrequest=1 in PDCCH, to TDD system, if PDCCH scheduling user's set sends PUSCH on certain component carrier, then trigger subscriber equipment and feed back this component carrier or CSI report aperiodic of the group component carrier wave belonging to this component carrier; To FDD system, if PDCCH scheduling user's set sends PUSCH on certain upstream components carrier wave, then trigger subscriber equipment and feed back the downlink component carrier that this upstream components carrier wave is corresponding, or belonging to downlink component carrier one group of downlink component carrier corresponding to this upstream components carrier wave CSI report aperiodic. In FDD system, the corresponding relation of up-downgoing component carrier is set in advance, and by base station notifying user equipment.
Preferably, after UE receives PDCCH, if CQIrequest=1 in PDCCH, clearly this trigger command is needed to trigger CSI report aperiodic of or a group component carrier wave. Such as, UE determines CSI report aperiodic once feeding back one-component carrier wave according to base station by the UE CSI report aperiodic mode that high-level signaling configures, and still once feeds back CSI report aperiodic of a group component carrier wave.
Wherein, when a trigger command triggers CSI report aperiodic of subscriber equipment feedback one-component carrier wave, to TDD system, if PDCCH scheduling user's set sends PUSCH on certain component carrier, then trigger subscriber equipment and feed back CSI report aperiodic of this component carrier; To FDD system, if PDCCH scheduling user's set sends PUSCH on certain upstream components carrier wave, then trigger subscriber equipment and feed back CSI report aperiodic of downlink component carrier corresponding to this upstream components carrier wave. In FDD system, the corresponding relation of up-downgoing component carrier is set in advance, and by base station notifying user equipment.
When a trigger command triggers CSI report aperiodic that subscriber equipment feeds back a group component carrier wave, to TDD system, if PDCCH scheduling user's set sends PUSCH on certain component carrier, then trigger subscriber equipment and feed back CSI report aperiodic of the group component carrier wave belonging to this component carrier, be i.e. part or all of component carrier in polymerization carrier wave belonging to this component carrier; To FDD system, if PDCCH scheduling user's set sends PUSCH on certain upstream components carrier wave, then trigger subscriber equipment feed back one group of downlink component carrier belonging to the downlink component carrier that this upstream components carrier wave is corresponding CSI report aperiodic.
Preferably, a group component carrier wave can comprise one or more component carrier.
Preferably, part or all of component carrier (TDD system) that is that a group component carrier wave refers to user device configuration or that activate, or, part or all of downlink component carrier (FDD system), to improve the motility that aperiodic, CSI reported.
Preferably, a group component carrier wave is set in advance, or configured by high level.
Preferably, a group component carrier wave refer to user device configuration or the component carrier that activates meets the component carrier of certain predetermined condition.
Such as, a group component carrier wave be user device configuration or the component carrier of component carrier call number (ComponentCarrierindex, CCindex) mould 2 congruence (namely that remainder after 2 deliverys is identical) in the component carrier that activates.
Or, in FDD system, the downlink component carrier of corresponding same upstream components carrier wave in downlink component carrier that is that a group component carrier wave is user device configuration or that activate.
Or, in FDD system, to a subscriber equipment, if existing such descending from component carrier DLSCC, this subscriber equipment is not configured or un-activation by the upstream components carrier wave of its correspondence, then all such descending descending principal component carrier waves from component carrier Yu this subscriber equipment bind a group component carrier wave.
Or, component carrier that is that a group component carrier wave refers to user device configuration or that activate is configured with the component carrier of identical downlink transfer pattern. Especially, if certain downlink transfer Mode subscriber devices only being configured or have activated one-component carrier wave, namely this group component carrier wave only comprises one-component carrier wave.
Or, component carrier that is that a group component carrier wave refers to user device configuration or that activate is configured with the component carrier of CSI report pattern identical aperiodic.
Or, component carrier that is that a group component carrier wave refers to user device configuration or that activate is configured with the component carrier of identical downlink transfer pattern and CSI report pattern identical aperiodic.
Or, component carrier that is that a group component carrier wave refers to user device configuration or that activate is positioned at the component carrier of same frequency range. Especially, if subscriber equipment only configures or have activated one-component carrier wave in certain frequency range, namely this group component carrier wave only comprises one-component carrier wave.
By above-mentioned pre-conditioned, meet the particular demands of subscriber equipment.
Embodiment one
In FDD system, in the PDCCH with specific descending control information format, work as CQIrequest=1, and when PDCCH scheduling user's set row principal component carrier wave PCC thereon sends PUSCH, then trigger subscriber equipment and feed back CSI report aperiodic of one group of downlink component carrier. Wherein, one group of downlink component carrier of the present embodiment includes: the descending principal component carrier wave of subscriber equipment, and current user equipment configuration or activate descending from component carrier the upstream components carrier wave of its correspondence described subscriber equipment is not configured or unactivated descending from component carrier (if existing such descending from component carrier).
Otherwise, work as CQIrequest=1, and PDCCH scheduling user's set is gone when sending PUSCH from component carrier SCC thereon, triggers subscriber equipment and feeds back CSI report aperiodic of this up downlink component carrier corresponding from component carrier.
Such as, in FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 2 are descending from component carrier DLCC2 and DLCC3 (the up of its correspondence does not configure or un-activation from component carrier ULCC2 and ULCC3). Wherein, presetting DLCC0, DLCC2 and DLCC3 is a group component carrier wave.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on ULCC0, and wherein CQIrequest=1, then subscriber equipment is triggered and feeds back CSI report aperiodic of DLCC0, DLCC2 and DLCC3.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on ULCC1, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback DLCC1.
Embodiment two
In FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 2 are descending from component carrier DLCC2 and DLCC3 (the up of its correspondence does not configure or un-activation from component carrier ULCC2 and ULCC3). Wherein, high-rise configuration DLCC0 and DLCC2 is a group component carrier wave; DLCC1 and DLCC3 is a group component carrier wave.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on ULCC0, and wherein CQIrequest=1, then this subscriber equipment is triggered CSI report aperiodic of feedback DLCC0 and DLCC2.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on ULCC1, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback DLCC1 and DLCC3.
Embodiment three
In FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 2 are descending from component carrier DLCC2 and DLCC3 (the up of its correspondence does not configure or un-activation from component carrier ULCC2 and ULCC3). Wherein, high-rise configuration DLCC0 and DLCC2 is a group component carrier wave; DLCC1 and DLCC3 is a group component carrier wave.
When base station configures CSI report aperiodic that a trigger command triggers subscriber equipment feedback one-component carrier wave:
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on ULCC0, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback DLCC0.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on ULCC1, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback DLCC1.
When base station configures CSI report aperiodic that a trigger command triggering subscriber equipment feeds back a group component carrier wave:
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on ULCC0, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback DLCC0 and DLCC2.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on ULCC1, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback DLCC1 and DLCC3.
Embodiment four
In TDD system, base station is user device configuration or have activated 1 principal component carrier wave CC0, and 1 from component carrier CC1.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on CC0, and wherein CQIrequest=1, then this subscriber equipment is triggered and feeds back whole component carriers that are that be currently configured or that activate, i.e. CSI report aperiodic of CC0 and CC1.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on CC1, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback CC1.
Embodiment five
In TDD system, base station is user device configuration or have activated 1 principal component carrier wave CC0, and 1 from component carrier CC1.
When base station configures CSI report aperiodic that a trigger command triggering subscriber equipment feeds back a group component carrier wave:
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on CC0, and wherein CQIrequest=1, then this subscriber equipment is triggered and feeds back whole component carriers that are that be currently configured or that activate, i.e. CSI report aperiodic of CC0 and CC1.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on CC1, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback CC1.
When base station configures CSI report aperiodic that a trigger command triggers subscriber equipment feedback one-component carrier wave:
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on CC0, and wherein CQIrequest=1, then this subscriber equipment is triggered CSI report aperiodic of feedback CC0.
If in a subframe, when subscriber equipment detects 1 PDCCH with specific descending control information format belonging to it, this PDCCH scheduling user's set sends PUSCH on CC1, and wherein CQIrequest=1, then subscriber equipment is triggered CSI report aperiodic of feedback CC1.
Method two
In lte-a system, support across carrier dispatching (cross-carrierscheduling), to TDD system, one-component carrier wave sends the up-downgoing schedule information of other component carriers; To FDD system, a downlink component carrier sends other downlink component carriers and the schedule information of upstream components carrier wave corresponding to other downlink component carriers. Schedule information is carried in the PDCCH with specific descending control information format (DCIformat) and is sent to scheduled subscriber equipment, and, for identifying scheduled component carrier, PDCCH introduces carrier wave instructions field (CIF, CarrierIndicatorField). Whether carry out across carrier dispatching, high-level signaling configure.
In lte-a system, base station uses transmission CSI report trigger command aperiodic of the PDCCH with specific descending control information format to UE, as CQIrequest=1 in the described PDCCH with specific descending control information format, trigger UE and feed back CSI report aperiodic. The PDCCH scheduling UE with specific descending control information format sends PUSCH on one-component carrier wave. When carrier dispatching, this PDCCH comprises CIF information, by PDCCH with CIF information instruction trigger CSI report aperiodic of which or which group component carrier wave.
Preferably, CIF instruction triggers aperiodic to be feedback CSI the call number of component carrier.
Preferably, when aperiodic, CSI report trigger command triggered CSI report aperiodic that subscriber equipment sends multiple component carriers, CIF instruction triggers aperiodic to be feedback CSI multiple component carriers in the call number of one-component carrier wave.
Preferably, CIF instruction triggers aperiodic to be feedback CSI a group index number corresponding to multiple component carriers.
Described PDCCH with CIF information also indicate subscriber equipment to send described PUSCH on a component carrier specified.
Or, when carrier dispatching, the described PDCCH described subscriber equipment of scheduling transmission PUSCH on the component carrier of an acquiescence with CSI report trigger command aperiodic. Preferably, the component carrier of described acquiescence is the principal component carrier wave PCC of described subscriber equipment.
Embodiment six
In FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 2 are descending from component carrier DLCC2 and DLCC3 (the up of its correspondence does not configure or un-activation from component carrier ULCC2 and ULCC3). Wherein, presetting DLCC0, DLCC2 and DLCC3 is a group component carrier wave.
When across carrier dispatching, when subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=0 (or 1), subscriber equipment is triggered CSI report aperiodic of feedback DLCC0 (or DLCC1). PDCCH scheduling user's set sends PUSCH on ULCC0 (or ULCC1).
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF is any one integer value in 2～7, then subscriber equipment is triggered and feeds back DLCC0, CSI report aperiodic of DLCC2 and DLCC3, PDCCH scheduling user's set sends PUSCH on ULCC0.
Or,
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF is 2 (or 3), then subscriber equipment is triggered and feeds back CSI report aperiodic of DLCC2 (or DLCC3), and PDCCH scheduling user's set sends PUSCH on ULCC0.
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF is any one integer value in 4～7, then subscriber equipment is triggered and feeds back DLCC0, CSI report aperiodic of DLCC2 and DLCC3, PDCCH scheduling user's set sends PUSCH on ULCC0.
Embodiment seven
In FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 2 are descending from component carrier DLCC2 and DLCC3 (the up of its correspondence does not configure or un-activation from component carrier ULCC2 and ULCC3). Wherein, high-rise configuration DLCC0 and DLCC2 is a group component carrier wave; DLCC1 and DLCC3 is a group component carrier wave.
When across carrier dispatching, when subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=0 (or 1), subscriber equipment is triggered and feeds back CSI report aperiodic of DLCC0 (or DLCC1), and PDCCH scheduling user's set sends PUSCH on ULCC0 (or ULCC1).
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=2, subscriber equipment is triggered and feeds back CSI report aperiodic of DLCC0 and DLCC2, and PDCCH scheduling user's set sends PUSCH on ULCC0.
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=3, subscriber equipment is triggered and feeds back CSI report aperiodic of DLCC1 and DLCC3, and PDCCH scheduling user's set sends PUSCH on ULCC1.
Embodiment eight
In FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 2 are descending from component carrier DLCC2 and DLCC3 (the up of its correspondence does not configure or un-activation from component carrier ULCC2 and ULCC3). Wherein, high-rise configuration DLCC0 and DLCC2 is a group component carrier wave; DLCC1 and DLCC3 is a group component carrier wave.
When across carrier dispatching, when subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=0 (or 1), subscriber equipment is triggered and feeds back CSI report aperiodic of DLCC0 (or DLCC1), and PDCCH scheduling user's set sends PUSCH on ULCC0 (or ULCC1).
When base station configures CSI report aperiodic that a trigger command triggers subscriber equipment feedback one-component carrier wave:
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=2, subscriber equipment is triggered CSI report aperiodic of feedback DLCC2, and PDCCH scheduling user's set sends PUSCH on ULCC0.
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=3, subscriber equipment is triggered CSI report aperiodic of feedback DLCC3, and PDCCH scheduling user's set sends PUSCH on ULCC1.
When base station configures CSI report aperiodic that a trigger command triggering subscriber equipment feeds back a group component carrier wave:
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=2, subscriber equipment is triggered and feeds back CSI report aperiodic of DLCC0 and DLCC2, and PDCCH scheduling user's set sends PUSCH on ULCC0.
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF=3, subscriber equipment is triggered and feeds back CSI report aperiodic of DLCC1 and DLCC3, and PDCCH scheduling user's set sends PUSCH on ULCC1.
Embodiment nine
According to prior art, base station is up to a user device configuration or activates 5 component carriers. When across carrier dispatching, when subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF are any one integer value in 0～4, subscriber equipment is triggered and feeds back CSI report aperiodic of a respective components carrier wave. Respective components carrier wave is indicated by CIF, such as, indicates its carrier index number. System default, now PDCCH scheduling user's set sends PUSCH on its principal component carrier wave.
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF is any one integer value in 5～7 or integer value set in advance, and subscriber equipment is triggered and feeds back CSI report aperiodic of whole component carrier/downlink component carriers that are that be currently configured or that activate. System default, now PDCCH scheduling user's set sends PUSCH on its principal component carrier wave.
Embodiment ten
In FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 2 are descending from component carrier DLCC2 and DLCC3 (the up of its correspondence does not configure or un-activation from component carrier ULCC2 and ULCC3).
When across carrier dispatching, when subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF joint instructions trigger which component carrier aperiodic CSI report and PDCCH scheduling user's set on which component carrier, send PUSCH, as shown in table 1.
Table 1
This table all has setting in base station and subscriber equipment, and base station sends CIF information according to this table, subscriber equipment determine according to this table trigger aperiodic to be feedback CSI report component carrier and send the component carrier of PUSCH. By upper table, improve feedback CSI speed aperiodic and efficiency.
It should be noted that this table is merely illustrative, those skilled in the art according to practical situation, can arrange every content, the invention is not limited in this regard in table flexibly.
Embodiment 11
In FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 1 is descending from component carrier DLCC2 (the up of its correspondence does not configure or un-activation from component carrier ULCC2).
When across carrier dispatching, when subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF joint instructions trigger which or which group component carrier wave aperiodic CSI report and PDCCH scheduling user's set on which component carrier, send PUSCH, as shown in table 2.
Table 2
This table all has setting in base station and subscriber equipment, and in table 2, when CIF value is 6 and 7, CSI aperiodic of trigger feedback one group component carrier wave, this call number corresponding to a group component carrier wave is called group index number in embodiments of the present invention. It should be noted that this table is merely illustrative, those skilled in the art according to practical situation, can arrange every content, the invention is not limited in this regard in table flexibly.
Embodiment 12
In TDD system, base station is user device configuration or have activated 1 principal component carrier wave CC0 and 1 from component carrier CC1.
When across carrier dispatching, when subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1, CIF joint instructions trigger which or which group component carrier wave aperiodic CSI report and PDCCH scheduling user's set on which component carrier, send PUSCH, as shown in table 3.
Table 3
This table all has setting in base station and subscriber equipment, and in table 3, when CIF value is 4 and 5, CSI aperiodic of trigger feedback one group component carrier wave, this call number corresponding to a group component carrier wave is called group index number in embodiments of the present invention. It should be noted that this table is merely illustrative, those skilled in the art according to practical situation, can arrange every content, the invention is not limited in this regard in table flexibly.
Method three
In the PDCCH with specific descending control information format, as CQIrequest=1, CSI report aperiodic of instruction triggering which or which group component carrier wave in PDCCH. Preferably, in PDCCH, trigger subscriber equipment by Nbits instruction and feed back CSI report aperiodic of which or which group component carrier wave.
This Nbits can be described as CSI report component carrier indication field aperiodic.
Preferably, Nbits instruction triggers aperiodic to be feedback CSI the call number of component carrier.
Preferably, when aperiodic, CSI report trigger command triggered CSI report aperiodic that subscriber equipment sends multiple component carriers, Nbits instruction triggers aperiodic to be feedback CSI multiple component carriers in the call number of one-component carrier wave.
Preferably, Nbits instruction triggers aperiodic to be feedback CSI a group index number corresponding to multiple component carriers.
Preferably, N≤3. Passing through call number, it is simple to quickly determine the component carrier of triggering, N≤3 are adapted to system requirements and saving signaling expense.
Except CQIrequest, the uplink scheduling information in DCIformat0 also has: 1bit frequency hopping flag bit (hoppingflag), enables for indicative of frequency hopping; Resource block assignments and frequency-hopping resource distribution; 5bits modulation coding mode index (MCSIndex, IMCS); 1bit new data instruction (Newdataindicator, NDI); 2bits is for the emissive power control command (TPCcommandforscheduledPUSCH) of scheduled PUSCH; The cyclic shift (CyclicshiftforDMRS) etc. of 3bits demodulated reference signal.
As CQIrequest=0 (when not triggering CSI report aperiodic), Nbits is for indicating the uplink scheduling information of scheduled PUSCH, and whether such as frequency hopping enables and/or the cyclic shift of modulation coding mode index and/or emissive power control command and/or demodulated reference signal and OCC and/or new data instruction NDI.
Embodiment 13
In the PDCCH with specific descending control information format, as CQIrequest=1, in described PDCCH, trigger subscriber equipment with 3bit instruction feed back CSI report aperiodic of which or which group component carrier wave, as shown in table 4.
Table 4
In the PDCCH with specific descending control information format, as CQIrequest=0,3bits respectively frequency hopping flag bit in PDCCH, the highest order (or lowest order) of modulation coding mode index, the highest order (or lowest order) of the cyclic shift of demodulated reference signal.
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1 time, CSI report aperiodic of one or the one group respective components carrier wave of feedback that is triggered according to 3 bits. And scheduled PUSCH gives tacit consent to frequency hopping and does not enable (or enable), the span of modulation coding mode index is 0～15 (or 16 integer value set in advance in 0～31), the span of the cyclic shift of the demodulated reference signal of scheduled PUSCH is { 0,2,3,4,6,4 values set in advance in 8,9,10}.
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=0 time, in described 3 bits, 1 bit is frequency hopping flag bit, if being set to ' 1 ', then scheduled PUSCH frequency hopping enables; If described 1 bit is set to ' 0 ', then scheduled PUSCH frequency hopping does not enable; In described 3 bits, 1 bit is the highest order (or lowest order) of modulation coding mode index, and the span of the modulation coding mode index of scheduled PUSCH is 0～31; In described 3 bits, 1 bit is the highest order (or lowest order) of the cyclic shift of demodulated reference signal, and the span of the modulation coding mode index of scheduled PUSCH is { 0,2,3,4,6,8,9,10}.
Embodiment 14
In FDD system, base station is user device configuration or have activated 1 couple of principal component carrier wave DLCC0 and ULCC0,1 pair from component carrier DLCC1 and ULCC1, and 2 are descending from component carrier DLCC2 and DLCC3 (the up of its correspondence does not configure or un-activation from component carrier ULCC2 and ULCC3). Wherein, high-rise configuration DLCC0 and DLCC2 is a group component carrier wave; DLCC1 and DLCC3 is a group component carrier wave.
When base station configures CSI report aperiodic that a trigger command triggers subscriber equipment feedback one-component carrier wave:
In the PDCCH with specific descending control information format, as CQIrequest=1, in described PDCCH, trigger subscriber equipment with 1bit instruction feed back CSI report aperiodic of which component carrier, as shown in table 5.
Table 5
When base station configures CSI report aperiodic that a trigger command triggering subscriber equipment feeds back a group component carrier wave:
In the PDCCH with specific descending control information format, as CQIrequest=1, in described PDCCH, trigger subscriber equipment with 1bit instruction feed back CSI report aperiodic of which group component carrier wave, as shown in table 6.
Table 6
In the PDCCH with specific descending control information format, as CQIrequest=0,1bit respectively frequency hopping flag bit described in described PDCCH.
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=1 time, CSI report aperiodic of one or the one group respective components carrier wave of feedback that is triggered according to described 1 bit. And scheduled PUSCH gives tacit consent to frequency hopping and does not enable (or enable).
When subscriber equipment detects the PDCCH with specific descending control information format belonging to it, and wherein CQIrequest=0 time, described 1 bit is frequency hopping flag bit, if being set to ' 1 ', then scheduled PUSCH frequency hopping enables; If described 1 bit is set to ' 0 ', then scheduled PUSCH frequency hopping does not enable.
With reference to Fig. 4, it is shown that the structured flowchart of a kind of base station according to embodiments of the present invention.
The base station 40 of the present embodiment includes: instruction module 402, for sending the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when described trigger command triggers CSI report aperiodic, subscriber equipment is indicated to feed back CSI report aperiodic of the component carrier specified by PDCCH.
Preferably, instruction module 402 includes: the first instruction module 4022, for sending the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, on one-component carrier wave, Physical Uplink Shared Channel PUSCH is sent by PDCCH scheduling user's set, when described trigger command triggers CSI report aperiodic, this component carrier instruction subscriber equipment is used to feed back CSI report aperiodic of the component carrier specified;
Preferably, the described component carrier specified is or a group component carrier wave corresponding with the component carrier sending PUSCH, and described corresponding relation is preset by system, or is configured by high system level.
Preferably, instruction module 402 includes: the second instruction module 4024, for when the carrier dispatching, when PDCCH also carries carrier wave instructions field CIF, when described CIF is used for the information indicating the described component carrier specified, send the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when described trigger command triggers CSI report aperiodic, indicate subscriber equipment to feed back CSI report aperiodic of the described component carrier specified by the PDCCH CIF carried.
Preferably, instruction module 402 includes: the 3rd instruction module, for when PDCCH also carries the information of the component carrier specified, the physical downlink control channel PDCCH with CSI report trigger command aperiodic is sent to subscriber equipment, when trigger command triggers CSI report aperiodic, by the information of this PDCCH described component carrier specified carried, CSI report aperiodic of the component carrier that instruction subscriber equipment feedback is specified.
Preferably, the call number that information is the component carrier specified of the described component carrier specified.
Preferably, it is intended that the length of component carrier information less than or equal to 3 bits.
Wherein, base station can only arrange the first instruction module 4022, the second instruction module 4024, any one in the 3rd instruction module, it is also possible in a base station the first instruction module 4022 and the second instruction module 4024 are arranged simultaneously.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or it is distributed on the network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, can be stored in storage device is performed by calculation element, and in some cases, shown or described step can be performed with the order being different from herein, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single integrated circuit module realize. so, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (14)
1. the triggering method of an aperiodic channel status information CSI report, it is characterised in that including:
Base station sends the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when described trigger command triggers CSI report aperiodic, described subscriber equipment is indicated to feed back CSI report aperiodic of the component carrier specified by described PDCCH;
Wherein, described base station by PDCCH indicate described subscriber equipment feedback specify component carrier aperiodic CSI report step include:
Described PDCCH dispatches described subscriber equipment and sends Physical Uplink Shared Channel PUSCH on one-component carrier wave, and described base station uses CSI report aperiodic that the component carrier of the described PUSCH of transmission indicates described subscriber equipment to feed back the component carrier specified; Or,
Described PDCCH carries the information of the described component carrier specified; Wherein, the information of the described component carrier specified is the call number of the described component carrier specified; The described component carrier specified includes multiple component carrier, and the call number of the described component carrier specified is the call number of the one-component carrier wave in the plurality of component carrier, or, for the group index number that the plurality of component carrier is corresponding; Or,
When carrier dispatching, described PDCCH uses carrier wave instructions field CIF to carry the information of the described component carrier specified; Described CIF also carries the information that instruction sends the component carrier of PUSCH scheduled for described PDCCH, and described PDCCH dispatches described subscriber equipment and sends described PUSCH on the described CIF component carrier sending PUSCH indicated.
2. method according to claim 1, it is characterized in that, described base station uses the component carrier of the described PUSCH of transmission to indicate CSI report aperiodic that described subscriber equipment feeds back the component carrier specified to include: the described component carrier specified is one or more component carrier.
3. method according to claim 1, it is characterized in that, described base station uses the component carrier of the described PUSCH of transmission to indicate CSI report aperiodic of component carrier that described subscriber equipment feedback is specified to include: the described component carrier specified is the one or more component carriers corresponding with the described component carrier sending PUSCH, described corresponding relation is preset by system, or is configured by described high system level.
4. method according to claim 1, it is characterized in that, described PDCCH dispatch described subscriber equipment on one-component carrier wave, sends Physical Uplink Shared Channel PUSCH, described base station use described send PUSCH component carrier indicate described subscriber equipment feed back specify component carrier aperiodic CSI report step include:
Described PDCCH dispatches described subscriber equipment and sends Physical Uplink Shared Channel PUSCH on a component carrier set in advance, and described base station uses the component carrier of the described PUSCH of transmission to indicate described subscriber equipment to feed back CSI report aperiodic of whole component carriers that are that it is currently configured or that activate.
5. method according to claim 4, it is characterised in that described component carrier set in advance is the principal component carrier wave of described subscriber equipment.
6. method according to claim 1, it is characterized in that, in FDD system, described PDCCH dispatch described subscriber equipment on one-component carrier wave, sends Physical Uplink Shared Channel PUSCH, described base station use described send PUSCH component carrier indicate described subscriber equipment feed back specify component carrier aperiodic CSI report step include:
Described PDCCH dispatches described subscriber equipment and sends PUSCH on a upstream components carrier wave set in advance, described base station uses CSI report aperiodic that the component carrier of the described PUSCH of transmission indicates described subscriber equipment to feed back the downlink component carrier specified, the described downlink component carrier specified includes: the downlink component carrier that described upstream components carrier wave set in advance is corresponding, and that described subscriber equipment is currently configured or activate descending from component carrier the upstream components carrier wave of its correspondence described subscriber equipment is not configured or unactivated descending from component carrier.
7. method according to claim 6, it is characterised in that described upstream components carrier wave set in advance is the up principal component carrier wave of described subscriber equipment.
8. method according to claim 1, it is characterised in that when carrier dispatching, also include:
Described PDCCH dispatches described subscriber equipment and sends Physical Uplink Shared Channel PUSCH on the component carrier of system default.
9. method according to claim 8, it is characterised in that the component carrier of described system default is the principal component carrier wave of described subscriber equipment.
10. method according to claim 8 or claim 9, it is characterised in that also include:
Described subscriber equipment uses described PUSCH to feed back CSI report aperiodic of the described component carrier specified.
11. method according to claim 1, it is characterised in that the length of the information of the described component carrier specified is less than or equal to 3 bits.
12. method according to claim 1, it is characterised in that be provided with CSI report component carrier indication field aperiodic in described PDCCH, for indicating the information of the described component carrier specified; When described trigger command does not trigger CSI report aperiodic, in described PDCCH described aperiodic CSI report component carrier indication field for indicating the uplink scheduling information of PUSCH scheduled for described PDCCH.
13. a base station, it is characterised in that including:
Instruction module, for sending the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when described trigger command triggers CSI report aperiodic, described subscriber equipment is indicated to feed back CSI report aperiodic of the component carrier specified by described PDCCH;
Wherein, described instruction module includes:
First instruction module, for sending the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, dispatch described subscriber equipment by described PDCCH on one-component carrier wave, send Physical Uplink Shared Channel PUSCH, when described trigger command triggers CSI report aperiodic, use CSI report aperiodic that the component carrier of the described PUSCH of transmission indicates described subscriber equipment to feed back the component carrier specified;
Or, when carrier dispatching, described PDCCH also carries carrier wave instructions field CIF, described CIF for indicating the information of the described component carrier specified; Described instruction module includes: the second instruction module, for sending the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when described trigger command triggers CSI report aperiodic, described subscriber equipment is indicated to feed back CSI report aperiodic of the described component carrier specified by the described PDCCH CIF carried;
Or, described PDCCH also carries the information of the described component carrier specified; Described instruction module includes: the 3rd instruction module, for sending the physical downlink control channel PDCCH with CSI report trigger command aperiodic to subscriber equipment, when described trigger command triggers CSI report aperiodic, by the information of the described PDCCH described component carrier specified carried, described subscriber equipment is indicated to feed back CSI report aperiodic of the described component carrier specified.
14. base station according to claim 13, it is characterised in that the information of the described component carrier specified is the call number of the described component carrier specified.
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| CN201010259011.3A CN101917259B (en) | 2010-08-16 | 2010-08-16 | The triggering method of aperiodic channel status information reports and base station |
| PCT/CN2010/080427 WO2012022103A1 (en) | 2010-08-16 | 2010-12-29 | Method and base station for triggering aperiodic channel state information report |
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| CN201010259011.3A CN101917259B (en) | 2010-08-16 | 2010-08-16 | The triggering method of aperiodic channel status information reports and base station |
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| WO2010076042A1 (en) * | 2009-01-05 | 2010-07-08 | Nokia Siemens Networks Oy | Providing of channel quality information in communications system |
| CN101917259B (en) * | 2010-08-16 | 2016-06-15 | 中兴通讯股份有限公司 | The triggering method of aperiodic channel status information reports and base station |
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| RU2774331C2 (en) * | 2018-09-27 | 2022-06-17 | Гуандун Оппо Мобайл Телекоммьюникейшнс Корп., Лтд. | Method and apparatus for determining starting information, terminal and network apparatus |
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