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WO2012071888A1 - Station de base et procédé permettant de notifier un mode de déclenchement de communication apériodique d'informations d'état de canal - Google Patents

Station de base et procédé permettant de notifier un mode de déclenchement de communication apériodique d'informations d'état de canal Download PDF

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Publication number
WO2012071888A1
WO2012071888A1 PCT/CN2011/076470 CN2011076470W WO2012071888A1 WO 2012071888 A1 WO2012071888 A1 WO 2012071888A1 CN 2011076470 W CN2011076470 W CN 2011076470W WO 2012071888 A1 WO2012071888 A1 WO 2012071888A1
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WIPO (PCT)
Prior art keywords
trigger
component carrier
trigger mode
aperiodic csi
csi report
Prior art date
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Application number
PCT/CN2011/076470
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English (en)
Chinese (zh)
Inventor
朱鹏
戴博
梁春丽
杨维维
喻斌
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ZTE Corp
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ZTE Corp
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Publication of WO2012071888A1 publication Critical patent/WO2012071888A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof

Definitions

  • the present invention relates to aperiodic channel state information (CSI) report in the field of communications, and in particular, to a base station and a method for notifying a trigger mode of an aperiodic CSI report.
  • CSI channel state information
  • a user equipment obtains channel state information of a downlink channel according to a downlink reference signal (reference signal) ( After the Channel State Information (CSI), the obtained CSI is fed back to the base station (eNodeB, eNB).
  • the base station determines the modulation and coding mode and physical resource location of the data transmitted to the UE, and the transmission mode according to the CSI fed back by the UE.
  • CSI includes three forms: Channel Quality Indicator (Channels Quality)
  • CQI CQI
  • PMI Pre-coding Matrix Indicator
  • RI Rank Indicator
  • the CSI feedback of the downlink channel of the UE has two methods: periodic feedback and aperiodic feedback, which are called periodic channel state information report (eriodic CSI reporting, also called periodic CSI report) and aperiodic channel state information report (aperiodic).
  • periodic CSI reporting also called periodic CSI report
  • aperiodic channel state information report also known as acyclic CSI reporting.
  • periodic CSI report means that the UE periodically feeds back CSI according to the configuration of the base station.
  • aperiodic CSI report means that the base station triggers the UE to feed back a CSI by using a trigger command.
  • a periodic CSI report For a periodic CSI report, in general, if a UE does not send a Physical Uplink Shared Channel (PUSCH) on a certain subframe, the CSI is transmitted on a Physical Uplink Control (PUCCH); If the UE transmits a PUSCH, the CSI bearer is transmitted on the PUSCH. For aperiodic CSI reporting, it is only transmitted on the PUSCH.
  • the base station schedules a certain UE to send a PUSCH by using an uplink grant authorization (UL grant) signaling.
  • the uplink scheduling grant signaling may be sent to the scheduled UE by a Physical Downlink Control Channel (PDCCH) having Downlink Control Information (DCI) format 0 (format 0).
  • DCI Downlink Control Information
  • One bit in DCI format 0 is used to trigger a trigger command for the UE to feed back an aperiodic CSI report, called a channel quality indication request (CQI request).
  • CQI request channel quality indication request
  • the UE If the UE detects a PDCCH having its DCI format 0 format, it transmits a PUSCH according to the UL grant contained therein. If the UE detects that the 1-bit CQI request in DCI format 0 is set to "1", the aperiodic CSI report is sent in the PUSCH scheduled by the DCI format 0.
  • a common search space and a user-specific (UE-Specific) search space are defined.
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution
  • CA Carrier Aggregation
  • FIG. 1 is a schematic diagram of carrier aggregation of an LTE-A system according to the prior art.
  • each aggregated carrier is called a “Component Carrier” (CC), also known as a "cell”.
  • CC Component Carrier
  • Multiple in the specification of the present invention means that two or more component carriers can be located in the same frequency band or in different frequency bands.
  • the physical uplink shared channel PUSCH can be transmitted by using a single antenna port or by using multiple antenna ports.
  • the PUSCH transmitted by the single antenna port is scheduled by the PDCCH DCI format 0, and the PUSCH transmitted by the multi-antenna port is scheduled by the PDCCH DCI format 4.
  • Trigger commands for aperiodic CSI reports are included in both DCI format 0 and DCI format 4.
  • the base station may configure or activate one or more component carriers for transmitting downlink signals for the user equipment, and the user equipment needs to be configured or activated (activated). Each component carrier feeds back CSI.
  • the base station For the Time Division Duplex (TDD) system, the base station must trigger the user equipment to feed back the aperiodic CSI report of a component carrier.
  • the user equipment sends a PUSCH on the component carrier; for a Frequency Division Duplex (FDD) system, the base station triggers the user equipment to feed back a non-periodic CSI of a downlink component carrier (DL CC).
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • the user equipment must be scheduled to transmit the PUSCH on an uplink component carrier (UL CC) corresponding to the downlink component carrier.
  • UL CC uplink component carrier
  • the PDCCH for scheduling the downlink control information format (including the DCI format 0 and the DCI format 4) of the PUSCH sending a trigger command CQI request with a bit set to "1" to trigger the user equipment pair
  • the component carrier feedback aperiodic CSI report.
  • each downlink component carrier has an uplink component carrier corresponding thereto.
  • the correspondence between the uplink and downlink component carriers is preset, and is notified to the UE by the base station through a second type of system information block (System Information Block Type 2, SIB-2). Therefore, the correspondence between the uplink and downlink component carriers in the LTE-A FDD system is also referred to as SIB-2 correspondence or SIB-2 linkage, and the pair of uplink and downlink component carriers are corresponding to each other by SIB-2 (associated ) Component carrier (SIB-2 linked CC).
  • SIB-2 associated ) Component carrier
  • the base station can configure or activate different numbers of uplink and downlink component carriers for the user equipment, as shown in FIG. 2.
  • the at least one pair of user equipment-specific (UE-specific) Primary Component Carriers (PCCs) includes a downlink PCC and an uplink PCC corresponding thereto.
  • the primary component carriers of different user equipment may be different.
  • the base station can also configure or activate one or more secondary component carriers and one or more uplink slave component carriers for the user equipment.
  • the uplink and downlink services may be asymmetric. For example, if the base station sends data to the user equipment on multiple component carriers, the aperiodic CSI report of each component carrier may be triggered more frequently. The base station needs to schedule the UE to transmit the PUSCH on the corresponding component carrier more frequently. In fact, in addition to the triggered aperiodic CSI report, the UE may not have much uplink data to be transmitted on the PUSCH to the base station, thereby causing additional signaling overhead and waste of uplink resources.
  • the base station configures or activates a certain downlink component carrier DL CC for the UE, but does not configure or activate the uplink component carrier UL CC corresponding to the DL CC, but according to the aperiodic in the LTE system.
  • the triggering mode of the CSI report the base station cannot trigger the UE to feed back the aperiodic CSI report of the DL CC.
  • the triggering method of the existing aperiodic CSI 4 advertisement is not flexible enough. A situation in which system resources may be wasted or the UE may not be able to feed back aperiodic CSI reports of certain DL CCs.
  • the technical problem to be solved by the present invention is to provide a technique for the base station to notify the aperiodic channel state information reporting trigger mode to solve the problem that the triggering mode of the aperiodic CSI feedback in the prior art is not flexible enough.
  • the present invention first provides a method for a base station to notify a trigger mode of a non-periodic channel state information (CSI).
  • the method includes:
  • the base station Predefining at least one trigger mode and corresponding trigger mode of the aperiodic CSI 4 report; the base station selects a trigger mode in the predefined trigger mode, and selects a corresponding trigger mode;
  • the base station notifies the selected trigger mode to the user equipment by using the selected trigger mode
  • the selected triggering manner includes a triggering command, a downlink control information (DCI) format of a physical downlink control channel (PDCCH) including the triggering command, a search space of a PDCCH including the triggering command, a high-level parameter, and At least one of high layer signaling.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • the predefined trigger mode of the aperiodic CSI report is used to trigger an aperiodic CSI report of the UE feedback component carrier, including at least one of the following:
  • Trigger mode (1) For a frequency division duplex (FDD) system, the component carrier is a downlink component corresponding to a second type of system information block (SIB-2) carrying an uplink component carrier of the aperiodic CSI 4 report. a carrier; for a time division duplex (TDD) system, the component carrier is a component carrier that carries the aperiodic CSI report;
  • FDD frequency division duplex
  • SIB-2 system information block
  • TDD time division duplex
  • Trigger mode (2) for the FDD system, the component carrier is all downlink component carriers configured or activated by the UE; for the TDD system, the component carrier is all component carriers configured or activated by the UE;
  • Trigger mode (3) for the FDD system, the component carrier is configured or stimulated by the UE other than the downlink component carrier corresponding to the SIB-2 of the uplink component carrier that reports the aperiodic CSI. All of the downlink component carriers that are active; for the TDD system, the component carriers are all component carriers configured or activated by the UE except for the component carriers carrying the aperiodic CSI report;
  • the component carrier is a preset downlink component carrier or a preset other than the downlink component carrier corresponding to the SIB-2 that carries the uplink component carrier of the aperiodic CSI report.
  • the downlink component carrier activated in the downlink component carrier; for the TDD system, the component carrier is activated in a preset component carrier or a preset component carrier other than the component carrier carrying the aperiodic CSI report Component carrier
  • Trigger mode (6) In the FDD system, the component carrier is a downlink component carrier configured or activated by the UE, and an uplink component carrier corresponding to the SIB-2 is an unconfigured or inactive uplink of the UE. Component carrier.
  • the trigger command is 1 bit.
  • the trigger mode selected by the base station is the trigger mode (1), the trigger mode (2) or the trigger mode (4), wherein the component carrier group X is preset for the trigger mode (4).
  • the default configuration of the component carrier group X is a downlink component carrier corresponding to the SIB-2 carrying the uplink component carrier of the aperiodic CSI report; for the TDD system The default configuration of the component carrier group X is to carry the component carrier of the aperiodic CSI report.
  • the preset component carrier group X includes one or more component carriers, which are configured by higher layer signaling.
  • the trigger mode selected by the base station is different.
  • the PDCCH including the triggering command when in the public search space, the trigger mode selected by the base station is the trigger mode (1); when the user equipment is in a dedicated search space, the trigger selected by the base station The mode is the trigger mode (2);
  • a PDCCH including the trigger command when the public search space is used, the touch selected by the base station
  • the trigger mode is the trigger mode (1); in the user equipment-specific search space, the trigger mode selected by the base station is the trigger mode (4);
  • a PDCCH that includes the triggering command in a public search space, a trigger mode selected by the base station is the trigger mode (2); in a user equipment-specific search space, a trigger mode selected by the base station is Trigger mode (4);
  • the component carrier group X is preset.
  • the default configuration of the component carrier group X is a downlink component carrier corresponding to the SIB-2 carrying the uplink component carrier of the aperiodic CSI report; for the TDD system The default configuration of the component carrier group X is to carry the component carrier of the aperiodic CSI report.
  • the trigger command is M bits, and M is greater than 1, and different states of the trigger command correspond to the predefined at least one trigger mode.
  • the trigger command is 2 bits
  • the different states of the 2 bits are 2 bits
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (1);
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (2);
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (3), (4), (5) or (6); wherein the trigger mode (4) or (5) is Presetting the component carrier group Y;
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (1); Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (3);
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (2), (4), (5) or (6); wherein for the trigger mode (4) or (5), Presetting the component carrier group Y;
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (1);
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (2);
  • the trigger mode selected by the base station defaults to the trigger mode (1), (2), (3) or (6), when there is high layer signaling
  • the trigger mode selected by the base station is the trigger mode (4) or (5); wherein the trigger carrier mode (4) or (5), the component carrier group Y is preset;
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (1) ;
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (1) or (2);
  • Triggering an aperiodic CSI report, and the trigger mode selected by the base station is the trigger mode (1) or (2);
  • the pre-set component carrier group Y and the pre-set component carrier group Z are two separately defined component carrier groups.
  • the preset component carrier group Y and the component carrier group Z comprise one or more component carriers, which are configured by higher layer signaling.
  • the trigger command is 1 bit or M bit, and M is greater than 1.
  • the trigger command is 1 bit or ⁇ bit, and ⁇ is greater than 1, and is configured by a high-level parameter.
  • the trigger command when the PDCCH DCI format 0 is in the public search space, the trigger command is 1 bit; when the PDCCH DCI format 0 is in the user equipment-specific search space, the trigger command is M bits, and M is greater than 1;
  • the trigger command is 1 bit; when the PDCCH DCI format 0 is in the user equipment-specific search space, the trigger command is 1 bit or M bit, and M is greater than 1, through High-level parameter configuration.
  • the trigger command is 1 bit or ⁇ bit, and ⁇ is greater than 1.
  • the trigger command is 1 bit or ⁇ bit, and ⁇ is greater than 1, and is configured by a high-level parameter.
  • the high level parameter is 1 bit.
  • the trigger command is 1 bit
  • the trigger command is ⁇ bits, and ⁇ is greater than 1; the default value of the high-level parameter is "0" or " ;
  • the trigger command is 1 bit
  • the trigger command is ⁇ bits, and ⁇ is greater than 1; the default value of the high-level parameter is "or "0".
  • the trigger command is 1 bit or M bit, and M is greater than 1, and the PDCCH DCI format 0 and the PDCCH DCI format 4 are uniformly configured or separately configured by higher layer parameters.
  • M is equal to two.
  • the high layer signaling is radio resource control signaling.
  • the present invention also provides a base station for notifying an aperiodic letter.
  • the trigger mode of the track status information (CSI) report includes a storage module, a selection module, and a notification module, where:
  • the storage module is configured to: store at least one trigger mode of the predefined aperiodic CSI report and a corresponding trigger mode;
  • the selection module is configured to: select a trigger mode in a predefined trigger mode, and select a corresponding trigger mode;
  • the notification module is configured to notify the user equipment (UE) of the trigger mode selected by the selection module by using a trigger mode selected by the selection module, where the predefined trigger mode includes a trigger command, including the At least one of a downlink control information (DCI) format of a physical downlink control channel (PDCCH) that triggers a command, a search space of a PDCCH that includes the trigger command, a higher layer parameter, and higher layer signaling.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • the preset component carrier group X is stored in the storage module; and the trigger mode of the predefined aperiodic CSI report stored by the storage module is used to trigger the UE feedback component carrier.
  • the aperiodic CSI 4 report includes at least one of the following:
  • Trigger mode (1) For a frequency division duplex (FDD) system, the component carrier is a downlink component corresponding to a second type of system information block (SIB-2) carrying an uplink component carrier of the aperiodic CSI 4 report. a carrier; for a time division duplex (TDD) system, the component carrier is a component carrier that carries the aperiodic CSI report;
  • FDD frequency division duplex
  • SIB-2 system information block
  • TDD time division duplex
  • Trigger mode (2) for the FDD system, the component carrier is all downlink component carriers configured or activated by the UE; for the TDD system, the component carrier is all component carriers configured or activated by the UE;
  • Trigger mode (3) For the FDD system, the component carrier is configured or activated by the UE other than the downlink component carrier corresponding to the SIB-2 of the uplink component carrier that reports the aperiodic CSI. a downlink component carrier; for a TDD system, the component carrier is all component carriers configured or activated by the UE except for a component carrier carrying the aperiodic CSI 4 report;
  • Trigger mode (5) for an FDD system, the component carrier is in addition to carrying the aperiodic CSI a preset downlink component carrier other than the downlink component carrier corresponding to the SIB-2 of the uplink component carrier or a downlink component carrier activated in the preset downlink component carrier; for the TDD system, the component carrier is a bearer a predetermined component carrier other than the component carrier of the aperiodic CSI report or a component carrier activated in a preset component carrier;
  • Trigger mode (6) In the FDD system, the component carrier is a downlink component carrier configured or activated by the UE, and an uplink component carrier corresponding to the SIB-2 is an unconfigured or inactive uplink of the UE. Component carrier.
  • the trigger command is 1 bit.
  • the base station further includes:
  • the preset module is configured to: preset the component carrier group X for the trigger mode (4); wherein the trigger mode selected by the selection module is the trigger mode (1), the trigger mode (2) or the trigger Mode (4).
  • the triggering mode (4) selected by the selecting module for the FDD system, the default configuration of the component carrier group X is the downlink corresponding to the SIB-2 carrying the uplink component carrier of the aperiodic CSI report.
  • Component carrier For a TDD system, the default configuration of the component carrier group X is to carry the component carrier of the aperiodic CSI report.
  • the preset component carrier group X stored by the storage module includes one or more component carriers, which are configured by high layer signaling.
  • the selection module is set to select different trigger modes.
  • the selection module is configured to select the trigger mode (1) when the PDCCH including the trigger command is in the public search space; and select the PDCCH when the PDCCH including the trigger command is in the user equipment-specific search space.
  • the selection module is configured to select the trigger mode (1) when the PDCCH including the trigger command is in the public search space; and select the trigger mode when the PDCCH including the trigger command is in the user equipment-specific search space. (4); or,
  • the selection module is configured to select the trigger mode (2) when the PDCCH including the trigger command is in the public search space; and select the trigger mode when the PDCCH including the trigger command is in the user equipment-specific search space. (4);
  • the component carrier group X is preset.
  • the triggering mode (4) selected by the selecting module for the FDD system, the default configuration of the component carrier group X is the downlink corresponding to the SIB-2 carrying the uplink component carrier of the aperiodic CSI report.
  • Component carrier For a TDD system, the default configuration of the component carrier group X is to carry the component carrier of the aperiodic CSI report.
  • the trigger command is
  • the different states of the trigger command correspond to the at least one trigger mode.
  • the base station further includes:
  • the preset module is configured to: preset a component carrier group Y and a component carrier group Z, wherein the component carrier group Y and the component carrier group Z are two respectively defined component carrier groups;
  • the notification module is configured to: when the trigger command is 2 bits, the different states of the 2 bits,
  • the trigger mode selected by the selection module is the trigger mode (1)
  • the trigger mode selected by the selection module is the trigger mode (2);
  • the trigger mode selected by the selection module is the trigger mode (3), (4), (5) or (6); wherein the trigger mode (4) or ( 5), the preset module is set to preset the component carrier group Y;
  • Notifying the UE not to trigger an aperiodic CSI report Notifying the UE to trigger an aperiodic CSI report, and the trigger mode selected by the selection module is the trigger mode (1);
  • the trigger mode selected by the selection module is the trigger mode (3)
  • the trigger mode selected by the selection module is the trigger mode (2), (4), (5) or (6); wherein the trigger mode (4) or ( 5), the preset module is set to preset the component carrier group Y;
  • the trigger mode selected by the selection module is the trigger mode (1)
  • the trigger mode selected by the selection module is the trigger mode (6);
  • the trigger mode selected by the selection module is the trigger mode (2), (3), (4) or (5); wherein the trigger mode (4) or ( 5), the preset module is set to preset the component carrier group Y;
  • the trigger mode selected by the selection module is the trigger mode (1)
  • the trigger mode selected by the selection module is the trigger mode (2);
  • the trigger mode selected by the selecting module defaults to the trigger mode (1), (2), (3) or (6), when there is In the high-level signaling configuration, the trigger mode selected by the selection module is the trigger mode (4) or (5); wherein for the trigger mode (4) or (5), the preset module is set to Setting the component carrier group Y in advance; Or, corresponding to:
  • the trigger mode selected by the selection module is the trigger mode (1)
  • the trigger mode selected by the selection module is the trigger mode (2), (3), (4), (5) or (6); wherein the trigger mode is 4) or (5), the preset module is configured to preset the component carrier group Y;
  • the trigger mode selected by the selection module is the trigger mode (1) or (2);
  • the trigger mode selected by the selection module is the trigger mode (4), where the preset module is configured to preset the component carrier group Y;
  • the preset module is configured to preset the component carrier group Z;
  • the trigger mode selected by the selection module is the trigger mode (1) or (2);
  • the preset module is configured to preset the component carrier group Y; and notifying the UE to trigger the non- The periodic CSI report, and the trigger mode selected by the selection module is the trigger mode (5), and the preset module is configured to preset the component carrier group 2.
  • the component carrier group Y and the component carrier group Z preset by the preset module include one or more component carriers, which are configured by high layer signaling.
  • the trigger command is 1 bit or M bit, and M is greater than 1.
  • the trigger command is 1 bit or M bit, and M is greater than 1, and is configured by a high-level parameter.
  • the triggering command stored in the storage module is 1 bit; when the PDCCH DCI format 0 is in the user equipment-specific search space, the storing In the trigger mode stored by the module, the trigger command is M bits, and M is greater than 1;
  • the storage module is configured to: in the trigger mode stored therein, the trigger command is 1 bit; when the PDCCH DCI format 0 is in the user equipment-specific search space, In the trigger mode stored in the storage module, the trigger command is 1 bit or M bit, and M is greater than 1, and is configured by a high-level parameter.
  • the storage module is configured to: in the trigger mode stored therein, the trigger command is 1 bit or M bit, and M is greater than 1.
  • the storage module is configured to: in the trigger mode stored therein, the trigger command is 1 bit or M bit, and M is greater than 1, and is configured by a high layer parameter.
  • the high level parameter is 1 bit.
  • the storage module is configured to: in the trigger mode stored therein, the trigger command is 1 bit;
  • the storage module is set to: in the trigger mode stored therein, the trigger command is M bits, and is greater than 1;
  • the default value of the high-level parameter is "0" or " ;
  • the storage module is set to: in the trigger mode stored therein, the trigger command is 1 bit;
  • the storage module When the high-level parameter is configured to "0", the storage module is set to: the touch it stores In the sending mode, the trigger command is M bits and is greater than 1;
  • the default value of the high-level parameter is " or "0".
  • the storage module is configured to: in the trigger mode stored therein, the trigger command is 1 bit or M bit, and M is greater than 1, and the PDCCH DCI is adopted by a high layer parameter.
  • Format 0 and 4 are configured in a unified manner or separately.
  • M is equal to two.
  • the high layer signaling is radio resource control signaling.
  • the embodiment of the present invention solves the triggering of the aperiodic CSI report in the prior art by pre-defining the trigger mode and the trigger mode, and notifying the selected trigger mode to the UE in the selected trigger mode.
  • the method is not flexible enough to improve the flexibility of triggering the aperiodic channel state information CSI, reducing the trigger delay of the aperiodic channel state information CSI, reporting the signaling overhead and transmission overhead, and avoiding The system resources are wasted, and there is no such situation that the UE cannot report some acyclic CSI reports of certain DL CCs.
  • FIG. 1 is a schematic diagram of carrier aggregation of an LTE-A system in the prior art
  • FIG. 2 is a schematic diagram of carrier aggregation of a user equipment in an LTE-A FDD system in the prior art
  • FIG. 3 is a schematic diagram of a method for notifying a non-periodic CSI report trigger mode by a base station according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a base station for notifying a trigger mode of an aperiodic CSI report according to an embodiment of the present invention. Preferred embodiment of the invention
  • FIG. 3 is a schematic diagram of a method for a base station to notify a trigger mode of an aperiodic CSI report according to an embodiment of the present invention.
  • the method mainly includes the following steps:
  • Step S310 the base station selects a trigger mode in a predefined trigger mode, and selects a corresponding trigger mode (may be one type, or two or more types);
  • Step S320 The base station notifies the selected trigger mode to the selected trigger mode.
  • the triggering manner includes the following: a triggering command, a DCI format of the PDCCH including the triggering command, and at least one of a search space, a high layer parameter, and a high layer signaling of the PDCCH including the triggering command.
  • the trigger mode of the predefined aperiodic CSI feedback includes one or more of the following.
  • the triggering command triggers the UE to feed back the aperiodic CSI report of the component carrier.
  • the component carrier is the downlink component carrier corresponding to the SIB-2 carrying the uplink component carrier of the aperiodic CSI report;
  • the component The carrier is a component carrier that carries the aperiodic CSI report.
  • the (uplink) component carrier carrying the aperiodic CSI report may also be described as the (uplink) component carrier scheduled by the uplink scheduling grant signaling including the trigger command, that is, the PUSCH scheduled by the uplink scheduling grant signaling including the trigger command. Transmit on this (upstream) component carrier.
  • the triggering command triggers the UE to feed back the aperiodic CSI report of the component carrier.
  • the component carrier is all downlink component carriers configured or activated by the UE; for the TDD system, the component carrier is configured or activated for the UE. All component carriers.
  • the triggering command triggers the aperiodic CSI report of the UE to feed back the component carrier.
  • the component carrier is the UE configuration other than the downlink component carrier corresponding to the SIB-2 of the uplink component carrier carrying the aperiodic CSI report. All activated downlink component carriers; for TDD systems, The component carrier is all component carriers configured or activated by the UE except for the component carrier carrying the aperiodic CSI report.
  • the trigger command triggers the UE to feed back the aperiodic CSI report of the component carrier, which is a preset component carrier group or a component carrier activated in a preset component carrier group.
  • the predetermined component carrier group is all or part of the component carriers configured or activated by the UE.
  • the preset component carrier is configured by high layer signaling such as Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the predetermined set of component carriers may include one or more component carriers.
  • the preset component carrier may be configured based on UE (UE specific), that is, the preset component carriers may be different for different UEs.
  • the preset component carrier configures only one group for one UE, or the preset component carrier configures one or more groups for one UE (if not specifically stated, the “multiple groups” in this specification represent two groups). Or two or more groups);
  • the preset component carrier may be configured based on a component carrier (CC specific ), or referred to as a cell specific configuration, that is, a different component carrier carrying the aperiodic CSI report, the preset The determined component carriers may be different.
  • the preset component carrier is configured for only one group of one component carrier, or the predetermined component carrier is configured for one or more groups of one component carrier;
  • the preset component carrier may be configured based on a component carrier configured or activated by the UE, that is, for different UEs or different component carriers carrying the aperiodic CSI report, the preset component carrier may be It is different.
  • the predetermined component carrier is configured for only one group of one component carrier of one UE, or the predetermined component carrier is configured for one or more groups of one component carrier of one UE.
  • the triggering command triggers the UE to feed back the aperiodic CSI report of the component carrier.
  • the component carrier is preset in addition to the downlink component carrier corresponding to the SIB-2 of the uplink component carrier carrying the aperiodic CSI report.
  • the component carrier is a preset component carrier other than a component carrier carrying the aperiodic CSI report or preset
  • the preset component carrier is as described in the trigger mode (4), and details are not described herein again.
  • the triggering command triggers the aperiodic CSI report of the UE feedback component carrier, where the component carrier is the downlink component carrier configured or activated by the UE, and the uplink component carrier corresponding to the SIB-2 is not configured by the UE. Or inactive uplink component carrier.
  • the above trigger command can be lbit or greater than lbit (that is, M bit and M is greater than 1).
  • one state of the trigger command does not trigger the aperiodic CSI report, and the other state corresponds to the predefined at least one trigger mode.
  • the corresponding trigger mode is one of the above six trigger modes.
  • the trigger mode is a trigger mode (1), or a trigger mode (2), or a trigger mode (4).
  • the trigger mode when the trigger command is lbit, and the PDCCH including the trigger command is in the public search space and the user equipment-specific search space, the trigger mode may be different.
  • the trigger mode when the PDCCH including the trigger command is in the public search space, the trigger mode is the trigger mode (1); in the user equipment-specific search space, the trigger mode is the trigger mode (2), or the trigger command is included.
  • the PDCCH is in the public search space, it is the trigger mode (1); in the user equipment-specific search space, it is the trigger mode (4), or when the PDCCH containing the trigger command is in the public search space, it is the trigger mode (2) In the user device's proprietary search space, it is the trigger mode (4);
  • the component carrier group X is preset.
  • the component carrier group X defaults to the downlink component carrier corresponding to the SIB-2 of the uplink component carrier that reports the aperiodic CSI; for the TDD system, the component carrier group X defaults to A component carrier carrying the aperiodic CSI report.
  • different states of the trigger command may correspond to different trigger modes.
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (2);
  • the "11" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (3), (4), (5) or (6).
  • the component carrier group is preset. Y;
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (3); the "11" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (2), (4),
  • the component carrier group Y is preset
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (6);
  • the "11" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (2), (3), (4) or (5).
  • the component carrier group is preset. Y;
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (2);
  • the "11" state corresponds to triggering the aperiodic CSI report, and when there is no higher layer signaling (such as RRC signaling) configuration, the trigger mode defaults to the trigger mode (1), (2), (3) or (6), when there is In the RRC signaling configuration, for the trigger mode (4) or (5), for the trigger mode (4) or (5), the component carrier group Y is preset;
  • RRC signaling such as RRC signaling
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (2), (3), (4), (5) or (6), and the trigger mode (4) or (5) is pre-set.
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (4), and the component carrier group Y is pre-set;
  • the "11" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (4), and the component carrier group Z is pre-set;
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (5), and the component carrier group Y is set in advance;
  • the "11" state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (5), and the component carrier group Z is set in advance;
  • the pre-set component carrier group Y and the pre-set component carrier group Z are two separately defined component carrier groups;
  • the preset component carrier group X is equal to the preset component carrier group Y, or the preset component carrier group X is equal to the preset component carrier group Z, or the preset The fixed component carrier group X is a separately defined component carrier group.
  • the "10” state and the “11” state may be other various corresponding situations in addition to the above-described corresponding cases.
  • the "11" state does not trigger the aperiodic CSI report.
  • the "10” state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (1);
  • the "01” state corresponds to triggering the aperiodic CSI report, and the trigger mode is the trigger mode (2);
  • the "00" state corresponds to the trigger
  • the aperiodic CSI report, and the trigger mode is the trigger mode (3), (4), (5) or (6), and the component carrier group Y is preset for the trigger mode (4) or (5).
  • the preset component carrier group may be the same or different for the trigger mode (4) or (5).
  • the trigger command is lbit.
  • the triggering commands are all greater than lbit (for example, 2 bits).
  • the trigger command is greater than lbit (for example: 2bit).
  • the trigger command is lbit.
  • the trigger command is greater than lbit (for example: 2bit).
  • the trigger command is lbit; when the PDCCH DCI format 0 is in the user equipment-specific search space, the trigger command is greater than lbit (for example, 2 bits).
  • the trigger command is greater than lbit (for example: 2bit).
  • the trigger command is 1 bit; when the PDCCH DCI format 0 is in the user equipment-specific search space, the trigger command is 1 bit or greater than 1 bit (for example, 2 bits), specifically High-level parameter configuration.
  • the high-level parameter is lbit.
  • the trigger command for triggering the non-periodic CSI report is lbit
  • the trigger command is lbit when the PDCCH DCI format 0 is in the user equipment-specific search space, and the trigger command is 2 bits;
  • the default value of the high-level parameter is "0"
  • the high-level parameter is also lbit
  • the trigger command for triggering the non-periodic CSI report is lbit
  • the trigger command is 1 bit; when the PDCCH DCI format 0 is in the user equipment-specific search space, the trigger command is 2 Bits;
  • the default value of the high-level parameter is " .
  • the trigger command described above is also referred to as a channel quality indication request (CQI request).
  • CQI request channel quality indication request
  • the base station activates a pair of primary component carriers DL CC0 and UL CC0, a pair of secondary component carriers DL CC1 and UL CC1 , and two downlink slave component carriers DL CC2 and DL CC3 (the corresponding uplinks for the user equipment)
  • the component carriers UL CC2 and UL CC3 are not configured or are not activated).
  • the trigger mode of the aperiodic CSI feedback is the above three trigger modes (1), (2) or (4).
  • the preset component carrier group is configured based on the UE (UE specific), and only one group (component carrier group Y) is configured, which is DL CC2 and DL CC3.
  • the trigger command for triggering the aperiodic CSI report in the PDCCH DCI format 4 is 2 bits: the "00" state corresponds to not triggering the aperiodic CSI report;
  • the "01" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (2);
  • the "11" state corresponds to triggering the aperiodic CSI 4 report and is the trigger mode (4).
  • the trigger command for triggering aperiodic CSI reports in PDCCH DCI format 0 is 1 bit:
  • the "0" state corresponds to not triggering the aperiodic CSI report
  • the "1" state corresponds to triggering the aperiodic CSI report and is the trigger mode (1), (2) or (4); or,
  • the trigger command for triggering aperiodic CSI reports in PDCCH DCI format 0 is 1 bit:
  • the "0" state corresponds to not triggering the aperiodic CSI 4 report
  • the "1" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (1);
  • the "0" state corresponds to not triggering the aperiodic CSI 4 report
  • the "1" state corresponds to triggering the aperiodic CSI 4 report and is the trigger mode (2) or (4).
  • the base station activates a pair of primary component carriers DL CC0 and UL CC0, a pair of secondary component carriers DL CC1 and UL CC1 , and two downlink slave component carriers DL CC2 and DL CC3 (the corresponding uplinks for the user equipment)
  • the component carriers UL CC2 and UL CC3 are not configured or are not activated).
  • the trigger mode of the aperiodic CSI feedback is the above trigger mode (1) or (4).
  • the preset component carrier group is configured based on UE (UE specific), and two groups (component carrier group Y and component carrier group Z) are configured, which are DL CC1 and DL CC2, respectively. , and DL CC0 and DL CC3.
  • the trigger command for triggering aperiodic CSI reports in PDCCH DCI format 4 is 2 bits:
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (4), and the corresponding pre-set component carrier groups are DL CC1 and DL CC2;
  • the "11" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (4), and the corresponding pre-set component carrier groups are DL CC0 and DL CC3.
  • the trigger command for triggering aperiodic CSI reports in PDCCH DCI format 0 is 1 bit:
  • the "0" state corresponds to not triggering the aperiodic CSI 4 report
  • the "1" state corresponds to triggering the aperiodic CSI 4 report and is the trigger mode (1).
  • the base station activates a pair of primary component carriers DL CC0 and UL CC0, a pair of secondary component carriers DL CC1 and UL CC1 , and two downlink slave component carriers DL CC2 and DL CC3 (the corresponding uplinks for the user equipment)
  • the component carriers UL CC2 and UL CC3 are not configured or are not activated).
  • the trigger mode of the aperiodic CSI feedback is the above three trigger modes (1), (2) or (4).
  • the preset component carrier group is configured based on the uplink component carrier activated by the UE, and only one group is configured, DLCC0 and DLCC3 for ULCC0, and DL CC1 and DL CC2 for ULCC1.
  • the trigger command for triggering aperiodic CSI reports in PDCCH DCI format 4 is 2 bits:
  • the "00" state corresponds to not triggering an aperiodic CSI report
  • the "01" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (2);
  • the "11" state corresponds to triggering the aperiodic CSI report, and is the trigger mode (4), and if the uplink component carrier carrying the aperiodic CSI report is ULCC0, the corresponding preset component carrier group is DLCC0 and DLCC3;
  • the uplink component carrier of the aperiodic CSI report is UL CC1, and the corresponding preset component carrier groups are DL CC1 and DL CC2.
  • the trigger command for triggering aperiodic CSI reports in PDCCH DCI format 0 is 1 bit:
  • the "0" state corresponds to not triggering the aperiodic CSI 4 report
  • the "1" state corresponds to triggering an aperiodic CSI report, and the trigger mode is (1), (2), or (4); or,
  • the trigger command for triggering the aperiodic CSI report in the PDCCH DCI format 0 is 1 bit:
  • the "0" state corresponds to not triggering the aperiodic CSI 4 report
  • the "1" state corresponds to triggering the aperiodic CSI report, and the trigger mode is (1), (2) or (4); when the PDCCH DCI format 0 is in the user equipment-specific search space, the PDCCH DCI format
  • Trigger acyclic in 0 The trigger command for CSI reporting is 2 bits:
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report;
  • the "01" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (2);
  • the "11" state corresponds to triggering the aperiodic CSI report, and is the trigger mode (4), and if the uplink component carrier carrying the aperiodic CSI report is UL CC0, the corresponding preset component carrier group is DL CC0 and DL CC3. If the uplink component carrier carrying the aperiodic CSI report is UL CC1, the corresponding preset component carrier groups are DL CC1 and DL CC2.
  • the base station activates a pair of primary component carriers DL CC0 and UL CC0, a pair of secondary component carriers DL CC1 and UL CC1 , and two downlink slave component carriers DL CC2 and DL CC3 (the corresponding uplinks for the user equipment)
  • the component carriers UL CC2 and UL CC3 are not configured or are not activated).
  • the trigger mode of the aperiodic CSI feedback is the above trigger mode (1) or (4).
  • the preset component carrier group is configured based on UE (UE specific), and two groups (component carrier group Y and component carrier group Z) are configured, respectively DL CC1 and DL CC2, and DL CC0 and DL CC3 (optional configuration of one component carrier group X is DL CC2 and DL CC3).
  • the trigger command for triggering aperiodic CSI reports in PDCCH DCI format 4 is 2 bits:
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (4), the component carrier group
  • the "11" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (4), the component carrier group
  • the trigger command for triggering aperiodic CSI reports in PDCCH DCI format 0 is 1 bit:
  • the "0" state corresponds to not triggering the aperiodic CSI 4 report
  • the "1" state corresponds to triggering the aperiodic CSI report, and is the trigger mode (1), (2) or (4) component carrier group Y, (4) component carrier group ⁇ or (4) component carrier group X;
  • the trigger command for sending an aperiodic CSI report is 1 bit:
  • the "0" state corresponds to not triggering the aperiodic CSI 4 report
  • the "1" state corresponds to triggering the aperiodic CSI report, and is the trigger mode (1), (2), (4) component carrier group Y, (4) component carrier group ⁇ or (4) component carrier group X;
  • the PDCCH DCI format 0 When the PDCCH DCI format 0 is in the user equipment-specific search space, the PDCCH DCI format
  • Trigger acyclic in 0 The trigger command for CSI reporting is 2 bits:
  • the "00" state corresponds to not triggering the aperiodic CSI 4 report
  • the "01" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (1);
  • the "10" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (4), the component carrier group Y;
  • the "11" state corresponds to triggering the aperiodic CSI 4 report, and is the trigger mode (4), the component carrier group
  • FIG. 4 is a schematic structural diagram of a base station for notifying a trigger mode of a non-periodic channel state information (CSI) report according to an embodiment of the present invention.
  • the base station mainly includes a storage module 410, a selection module 420, and a notification module 430, where:
  • the storage module 410 is configured to store at least one trigger mode and a corresponding trigger mode of the predefined aperiodic CSI report;
  • the selection module 420 is connected to the storage module 410, and is configured to select a trigger mode in a predefined trigger mode, and select a corresponding trigger mode (either one type or two or more types);
  • the notification module 430 is connected to the storage module 410 and the selection module 420, and is configured to notify the UE of the trigger mode selected by the selection module 420 by the trigger mode selected by the selection module 420;
  • the predefined triggering manner includes a triggering command, a DCI format of the PDCCH including the triggering command, and at least one of a search space, a high layer parameter, and a high layer signaling of the PDCCH including the triggering command.
  • the trigger mode of the predefined aperiodic CSI report stored by the storage module 410 is used.
  • the aperiodic CSI report that triggers the UE feedback component carrier includes at least one of the following:
  • the component carrier is the downlink component carrier corresponding to the SIB-2 carrying the uplink component carrier of the aperiodic CSI report;
  • the component carrier is the component carrier carrying the aperiodic CSI report;
  • the component carrier is all downlink component carriers configured or activated by the UE;
  • the component carriers are all component carriers configured or activated by the UE;
  • the component carrier is all downlink component carriers configured or activated by the UE except the downlink component carrier corresponding to the SIB-2 of the uplink component carrier carrying the aperiodic CSI report;
  • the component carrier is All component carriers configured or activated by the UE except for the component carriers carrying the aperiodic CSI report;
  • the component carrier is a preset component carrier or is a component carrier activated in a preset component carrier
  • the component carrier is activated in a preset downlink component carrier or a preset downlink component carrier other than the downlink component carrier corresponding to the SIB-2 of the uplink component carrier carrying the aperiodic CSI report.
  • a downlink component carrier for a TDD system, the component carrier is a preset component carrier other than a component carrier carrying an aperiodic CSI report or a component carrier activated in a preset component carrier;
  • the component carrier is a downlink component carrier configured or activated by the UE, and the uplink component carrier corresponding to the SIB-2 is an unconfigured or inactive uplink component carrier of the UE.
  • the selection module 420 when the selection module 420 is set to trigger the command to be 1 bit, one of the trigger modes (1) to (6) is selected.
  • the base station further includes:
  • the preset module 440 is connected to the storage module 410, and is configured to preset the component carrier group X for the trigger mode (4);
  • the trigger mode selected by the selection module 420 is a trigger mode (1), a trigger mode (2) or a trigger mode (4).
  • the triggering mode (4) selected by the module 420 is selected, and for the FDD system, the default configuration of the component carrier group X is corresponding to the SIB-2 of the uplink component carrier carrying the aperiodic CSI report.
  • the default configuration of component carrier group X is a component carrier carrying an aperiodic CSI report.
  • the preset component carrier group X stored by the storage module 410 includes one or more component carriers, which are configured by higher layer signaling.
  • the trigger mode selected by the selection module 420 is different.
  • the selection module 420 is configured to select a trigger mode (1) when the PDCCH including the trigger command is in the public search space; and select the trigger mode (2) when the PDCCH including the trigger command is in the user equipment-specific search space;
  • the selection module 420 is configured to select a trigger mode (1) when the PDCCH including the trigger command is in the public search space; and select a trigger mode (4) when the PDCCH including the trigger command is in the user equipment-specific search space;
  • the selection module 420 selects a trigger mode (2) when the PDCCH configured to include the trigger command is in the public search space, and selects a trigger mode when the PDCCH including the trigger command is in the user equipment-specific search space (4);
  • the component carrier group X is preset.
  • the triggering mode (4) selected by the module 420 is selected.
  • the default configuration of the component carrier group X is the downlink component carrier corresponding to the SIB-2 of the uplink component carrier carrying the aperiodic CSI report; for the TDD system, The default configuration of component carrier group X is a component carrier carrying an aperiodic CSI report.
  • the trigger command in the predefined trigger mode stored by the storage module 410, is M bits and M is greater than 1, and the different states of the trigger command correspond to the predefined at least one trigger mode.
  • the base station further includes:
  • the preset module 440 is connected to the storage module 410, and is configured to preset a component carrier group Y and a component carrier group Z, and the component carrier group Y and the component carrier group Z are two respectively defined component carrier groups;
  • the notification module 430 is configured to set a different state of 2 bits when the trigger command is 2 bits.
  • the trigger mode selected by the selection module 420 is a trigger mode (1)
  • the trigger mode selected by the selection module 420 is the trigger mode (2);
  • the trigger mode selected by the selection module 420 is the trigger mode (3), (4), (5) or (6); wherein the trigger mode (4) or (5), the preset The module 440 is configured to preset the component carrier group Y;
  • the trigger mode selected by the selection module 420 is a trigger mode (1)
  • the trigger mode selected by the selection module 420 is the trigger mode (3);
  • the trigger mode selected by the selection module 420 is the trigger mode (2), (4), (5) or (6); wherein the trigger mode (4) or (5), the preset The module 440 is configured to preset the component carrier group Y;
  • the trigger mode selected by the selection module 420 is a trigger mode (1)
  • the trigger mode selected by the selection module 420 is a trigger mode (6);
  • the trigger mode selected by the selection module 420 is a touch Mode (2), (3), (4) or (5); wherein for the trigger mode (4) or (5), the preset module 440 is set to a preset component carrier group ⁇ ;
  • the trigger mode selected by the selection module 420 is a trigger mode (1)
  • the trigger mode selected by the selection module 420 is the trigger mode (2);
  • the trigger mode selected by the selection module 420 defaults to the trigger mode (1), (2), (3) or (6)
  • the trigger mode selected by the selection module 420 is the trigger mode (4) or (5); wherein for the trigger mode (4) or (5), the preset module 440 is set to preset Component carrier group ⁇ ;
  • the trigger mode selected by the selection module 420 is a trigger mode (1)
  • the trigger mode selected by the selection module 420 is the trigger mode (2), (3), (4), (5) or (6); wherein the trigger mode (4) or (5) ), the preset module 440 is configured to preset a component carrier group ⁇ ;
  • the trigger mode selected by the selection module 420 is the trigger mode (1) or (2);
  • the trigger mode selected by the selection module 420 is the trigger mode (1) or (2);
  • the trigger mode selected by the selection module 420 is the trigger mode (5)
  • the preset module 440 is set to the preset component carrier group Y;
  • the UE is notified to trigger the aperiodic CSI report, and the trigger mode selected by the selection module 420 is the trigger mode (5), and the preset module 440 is set to the preset component carrier group 2.
  • the component carrier group Y and the component carrier group Z preset by the preset module 440 comprise one or more component carriers, which are configured by high layer signaling.
  • the trigger command is 1 bit or M bit and M is greater than 1.
  • the trigger command in the PDCCH DCI format 0, in the trigger mode stored by the storage module 410, the trigger command is 1 bit or ⁇ bit and ⁇ is greater than 1, and is configured by a high-level parameter.
  • the triggering mode stored in the storage module 410 is 1 bit; when the PDCCH DCI format 0 is in the user equipment-specific search space, the storage module 410 stores In the trigger mode, the trigger command is M bits and M is greater than 1;
  • the trigger command is 1 bit; when the PDCCH DCI format 0 is in the user equipment-specific search space, the trigger mode stored in the storage module 410 is in the trigger mode.
  • the trigger command is 1 bit or M bit and M is greater than 1, and is configured by higher layer parameters.
  • the trigger command in the PDCCH DCI format 4, in the trigger mode stored by the storage module 410, is 1 bit or ⁇ bit and ⁇ is greater than 1. In the above-mentioned base station, in the PDCCH DCI format 4, in the trigger mode stored by the storage module 410, the trigger command is 1 bit or ⁇ bit and ⁇ is greater than 1, and is configured by high-level parameters.
  • the upper level parameter is lbit.
  • the triggering mode stored in the storage module 410 triggers a command of 1 bit
  • the triggering mode stored in the storage module 410 triggers a command greater than 1 bit
  • the default value of the high-level parameter is "0" or T;
  • the triggering mode stored in the storage module 410 triggers a command of 1 bit
  • the triggering mode stored in the storage module 410 triggers a command greater than 1 bit
  • the default value for high-level parameters is "1" or "0".
  • the trigger command is 1 bit or M bit and M is greater than 1, and the PDCCH DCI formats 0 and 4 are uniformly configured or separately configured by higher layer parameters.
  • the above M typically, may be equal to two.
  • the above high layer signaling may be radio resource control signaling.
  • the present invention provides a technique for a base station to notify a non-periodic channel state information reporting trigger mode to solve the problem that the triggering mode of the aperiodic CSI feedback in the prior art is not flexible enough.
  • the embodiment of the present invention achieves the flexibility of triggering the non-periodic channel state information CSI report and reduces the aperiodic channel state by predefining the trigger mode and the trigger mode, and selecting the selected touch problem in the selected trigger mode.
  • the triggering delay of the information CSI report saves the trigger signaling overhead and the transmission overhead, avoids waste of system resources, and does not cause a situation in which the UE cannot report some acyclic CSI reports of certain DL CCs.

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Abstract

L'invention concerne une station de base et un procédé permettant de notifier un mode de déclenchement de communication apériodique d'informations d'état de canal. La station de base et le procédé précités apportent une solution aux problèmes rencontrés avec les procédés de déclenchement de communication d'informations d'état de canal de l'état antérieur de la technique, qui n'offraient pas la flexibilité nécessaire. Le procédé selon l'invention comprend les étapes suivantes : on prédéfinit des modes de déclenchement de communication apériodique d'informations d'état de canal et des procédés de déclenchement correspondants ; parmi les modes de déclenchement prédéfinis, la station de base choisit un mode de déclenchement et le procédé de déclenchement correspondant ; la station de base notifie à un équipement utilisateur (« User Equipment » ou UE) le mode de déclenchement choisi au moyen du procédé de déclenchement choisi, le procédé de déclenchement choisi comprenant une commande de déclenchement et/ou un format d'informations de contrôle de liaison descendante (« Downlink Control Information » ou DCI) de canal physique de liaison descendante (« Physical Downlink Control Channel » ou PDCCH) comprenant la commande de déclenchement et/ou un espace de recherche PDCCH comprenant la commande de déclenchement et/ou un paramètre de couche plus élevée et/ou une signalisation de couche plus élevée. L'invention permet de résoudre le manque de flexibilité des procédés de déclenchement de communication apériodique d'informations d'état de canal de l'état antérieur de la technique. Elle permet également d'économiser le temps système consacré à la signalisation de déclenchement et à la transmission et d'éviter ainsi le gaspillage des ressources système.
PCT/CN2011/076470 2010-11-29 2011-06-28 Station de base et procédé permettant de notifier un mode de déclenchement de communication apériodique d'informations d'état de canal Ceased WO2012071888A1 (fr)

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