CN113518462A - Method for triggering aperiodic CSI reporting, reporting method and device, and medium - Google Patents

Method for triggering aperiodic CSI reporting, reporting method and device, and medium Download PDF

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CN113518462A
CN113518462A CN202010281499.3A CN202010281499A CN113518462A CN 113518462 A CN113518462 A CN 113518462A CN 202010281499 A CN202010281499 A CN 202010281499A CN 113518462 A CN113518462 A CN 113518462A
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aperiodic csi
reporting
control information
downlink control
resource
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CN113518462B (en
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周欢
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

A method, a reporting method, a device and a medium for triggering aperiodic CSI reporting are provided, wherein the method for triggering the aperiodic CSI reporting comprises the following steps: configuring an aperiodic CSI trigger state table to indicate a trigger aperiodic CSI trigger state to user equipment; issuing first downlink control information to the user equipment so that the user equipment carries out aperiodic CSI reporting according to the first downlink control information; the first downlink control information includes: and indicating whether the first downlink control information only triggers aperiodic CSI reporting and indicating resources for reporting the aperiodic CSI to the user equipment, wherein the resources for reporting the aperiodic CSI comprise a time slot for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI. The scheme can shorten the processing time of reporting the aperiodic CSI.

Description

Method for triggering aperiodic CSI reporting, reporting method and device, and medium
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a medium for triggering aperiodic CSI reporting.
Background
In a wireless communication system, a base station may transmit an uplink grant (UL DCI) to a User Equipment (UE), the uplink grant indicating resources during which the UE may transmit data to the base station. Within the UL DCI, a base station may send a Channel State Information (CSI) trigger, and a UE may initiate an aperiodic CSI (a-CSI) report after receiving the CSI trigger, where the aperiodic CSI report may provide CSI for a communication link between the UE and the base station.
In a new air interface (NR) system, triggering aperiodic CSI by UL DCI mainly includes the following steps:
step one, configuring an aperiodic CSI trigger state table by high-level signaling (RRC signaling), wherein the aperiodic CSI trigger state table comprises one or M aperiodic CSI trigger states, one aperiodic CSI trigger state comprises one or more pieces of CSI reporting related configuration information, and a time slot interval Y of the jth aperiodic CSI reportingj. The number N of bits of a CSI request field contained in Downlink Control Information (DCI) configured by a high-level signaling; if 2NIf the value is-1 is more than or equal to M, executing a step two; otherwise, executing the third step;
step two, the MAC-CE selects a plurality of aperiodic CSI trigger states from the aperiodic CSI trigger state table;
step three, the DCI comprises a CSI request (CSI request) field and indicates to trigger an aperiodic CSI trigger state;
and step four, after receiving the DCI, the UE measures the configuration of the CSI reporting related reference signals, if the DCI only triggers the aperiodic CSI reporting, the UE feeds back the aperiodic CSI by adopting a Physical Uplink Shared Channel (PUSCH), and reports the aperiodic CSI on a PUSCH resource indicated by the UL DCI.
However, the processing time for reporting the aperiodic CSI by using the PUSCH resource is long, so that the base station cannot acquire the CSI quickly, and the scheduling accuracy of the base station is poor.
Disclosure of Invention
The embodiment of the invention solves the technical problems that the processing time for reporting the aperiodic CSI by using the PUSCH resource is long, so that the base station cannot rapidly acquire the CSI, and the scheduling accuracy of the base station is poor.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for triggering aperiodic CSI reporting, including: configuring an aperiodic CSI trigger state table, wherein the aperiodic CSI trigger state table comprises 1 or M aperiodic CSI trigger states, and one aperiodic CSI trigger state comprises at least one CSI reporting related configuration information; m is the number of aperiodic CSI trigger states in the aperiodic CSI trigger state table; indicating a triggering aperiodic CSI triggering state to user equipment; issuing first downlink control information to the user equipment so that the user equipment carries out aperiodic CSI reporting according to the first downlink control information; the first downlink control information includes: and indicating whether the first downlink control information only triggers aperiodic CSI reporting and indicating resources for reporting the aperiodic CSI to the user equipment, wherein the resources for reporting the aperiodic CSI comprise a time slot for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, a field corresponding to triggering PDSCH in the first downlink control information is used to identify the aperiodic CSI.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, the timeslot for reporting the aperiodic CSI is indicated in the following manner: indicating a slot offset in the first downlink control information; the time slot for reporting the aperiodic CSI is as follows: the slot offset is the sum of slots of uplink slots corresponding to the PDCCH end time corresponding to the first downlink control information.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, the timeslot for reporting the aperiodic CSI is indicated by the following formula:
Figure BDA0002446743620000021
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepAnd m is a value of a time domain resource allocation field indication carried in the first downlink control information, and corresponds to a time domain resource table index m + 1.
Optionally, when a plurality of PUCCH resources for reporting the aperiodic CSI are provided, PUCCH resources corresponding to different UCI bit intervals are provided; and the user equipment determines a UCI bit interval according to the number of UCI and reports the aperiodic CSI on PUCCH resources corresponding to the determined UCI bit interval.
In order to solve the above technical problem, an embodiment of the present invention further provides an aperiodic CSI reporting method, including: receiving first downlink control information; the first downlink control information includes: indicating whether the first downlink control information only triggers indication information for reporting aperiodic CSI and indicating resources for reporting the aperiodic CSI, wherein the resources for reporting the aperiodic CSI comprise time slots for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI; measuring CSI reporting related reference signal configuration; and determining a resource for reporting the aperiodic CSI, and reporting the aperiodic CSI on the determined resource.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different time slots, the determining resources for reporting aperiodic CSI includes: determining a time slot for reporting the aperiodic CSI by adopting the following formula:
Figure BDA0002446743620000031
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepAnd m is a value of a time domain resource allocation field indication carried in the first downlink control information, and corresponds to a time domain resource table index m + 1.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different time slots, the determining resources for reporting aperiodic CSI includes: acquiring the time slot offset indicated in the first downlink control information; and adding an uplink time slot corresponding to the PDCCH end time corresponding to the first downlink control information and the time slot offset to obtain a sum value serving as the time slot for reporting the aperiodic CSI.
Optionally, the determining resources for reporting the aperiodic CSI when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that PUCCH resources corresponding to aperiodic CSI reporting and HARQ-ACK are different, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different slots, includes: when the number of PUCCH resources reporting the aperiodic CSI is multiple and different UCI bit intervals correspond to different PUCCH resources, determining the UCI bit intervals according to the number of UCI; and determining the PUCCH resource reporting the aperiodic CSI according to the determined UCI bit interval.
Optionally, the determining, when the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK share a PUCCH resource, and when second downlink control information indicating a new PUCCH resource is received and no resource indicating aperiodic CSI reporting is included in the second downlink control information, the determining a resource for reporting aperiodic CSI further includes: determining that the PUCCH resource reporting the aperiodic CSI and the PUCCH resource corresponding to the HARQ-ACK are as follows: the new PUCCH resource indicated by the second downlink control information.
Optionally, the determining, when the first downlink control information indicates that aperiodic CSI reporting is different from PUCCH resources corresponding to HARQ-ACK, and when third downlink control information indicating a new PUCCH resource is received and there is no resource indicating aperiodic CSI reporting in the third downlink control information, the determining the resource reporting aperiodic CSI further includes: determining that the PUCCH resource reporting the aperiodic CSI is the PUCCH resource indicated by the first downlink control information, and the PUCCH resource corresponding to the HARQ-ACK is the PUCCH resource indicated by the third downlink control information.
The embodiment of the present invention further provides a device for triggering aperiodic CSI reporting, including: the system comprises a configuration unit and a configuration unit, wherein the configuration unit is used for configuring an aperiodic CSI trigger state table, the aperiodic CSI trigger state table comprises 1 or M aperiodic CSI trigger states, and one aperiodic CSI trigger state comprises at least one CSI reporting related configuration information; m is the number of aperiodic CSI trigger states in the aperiodic CSI trigger state table; an indication unit, configured to indicate a triggered aperiodic CSI trigger state to a user equipment; a sending unit, configured to issue first downlink control information to the ue, so that the ue performs aperiodic CSI reporting according to the first downlink control information; the first downlink control information includes: and indicating whether the first downlink control information only triggers aperiodic CSI reporting and indicating resources for reporting the aperiodic CSI to the user equipment, wherein the resources for reporting the aperiodic CSI comprise a time slot for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, a field corresponding to triggering PDSCH in the first downlink control information is used to identify the aperiodic CSI.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, the timeslot for reporting the aperiodic CSI is indicated in the following manner: indicating a slot offset in the first downlink control information; the time slot for reporting the aperiodic CSI is as follows: the slot offset is the sum of slots of uplink slots corresponding to the PDCCH end time corresponding to the first downlink control information.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, the timeslot for reporting the aperiodic CSI is indicated by the following formula:
Figure BDA0002446743620000041
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepAnd m is a value of a time domain resource allocation field indication carried in the first downlink control information, and corresponds to a time domain resource table index m + 1.
Optionally, when a plurality of PUCCH resources for reporting the aperiodic CSI are provided, PUCCH resources corresponding to different UCIbit intervals are provided; and the user equipment determines a UCI bit interval according to the number of UCI and reports the aperiodic CSI on PUCCH resources corresponding to the determined UCI bit interval.
An embodiment of the present invention further provides an aperiodic CSI reporting apparatus, including: a receiving unit, configured to receive first downlink control information; the first downlink control information includes: indicating whether the first downlink control information only triggers indication information for reporting aperiodic CSI and indicating resources for reporting the aperiodic CSI, wherein the resources for reporting the aperiodic CSI comprise time slots for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI; the measurement unit is used for measuring the configuration of the CSI reporting related reference signals; a determining unit, configured to determine a resource for reporting the aperiodic CSI; and a reporting unit, configured to report the aperiodic CSI on the determined resource.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different time slots, the determining unit is configured to determine the time slot for reporting the aperiodic CSI by using the following formula:
Figure BDA0002446743620000051
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepAnd m is a value of a time domain resource allocation field indication carried in the first downlink control information, and corresponds to a time domain resource table index m + 1.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different time slots, the determining unit is configured to obtain a time slot offset indicated in the first downlink control information; and adding an uplink time slot corresponding to the PDCCH end time corresponding to the first downlink control information and the time slot offset to obtain a sum value serving as the time slot for reporting the aperiodic CSI.
Optionally, the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that PUCCH resources corresponding to aperiodic CSI reporting and HARQ-ACK are different, or the first downlink control information indicates that the aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different slots, where the determining unit is configured to determine the UCI bit interval according to the number of UCI bits when the PUCCH resources reporting the aperiodic CSI are multiple and different UCI bit intervals correspond to different PUCCH resources; and determining the PUCCH resource reporting the aperiodic CSI according to the determined UCI bit interval.
Optionally, the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK share PUCCH resources, and if second downlink control information indicating a new PUCCH resource is received and the second downlink control information does not indicate a resource for aperiodic CSI reporting, the determining unit is configured to determine that the PUCCH resource for aperiodic CSI reporting and the PUCCH resource corresponding to HARQ-ACK are: the new PUCCH resource indicated by the second downlink control information.
Optionally, the first downlink control information indicates that aperiodic CSI reporting is different from PUCCH resources corresponding to HARQ-ACK, and if third downlink control information indicating a new PUCCH resource is received and the third downlink control information does not indicate a resource for aperiodic CSI reporting, the determining unit is configured to determine that the PUCCH resource for aperiodic CSI reporting is the PUCCH resource indicated by the first downlink control information, and the PUCCH resource corresponding to HARQ-ACK is the PUCCH resource indicated by the third downlink control information.
The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs any of the above steps of the method for triggering aperiodic CSI reporting.
The embodiment of the present invention further provides another computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform any of the steps of the aperiodic CSI reporting method.
The embodiment of the present invention further provides a device for triggering aperiodic CSI reporting, which includes a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor executes any of the above methods for triggering aperiodic CSI reporting when running the computer program.
The embodiment of the present invention further provides another aperiodic CSI reporting apparatus, which includes a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor executes any of the above-mentioned steps of the aperiodic CSI reporting method when running the computer program.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
and the user equipment indicates the time slot for reporting the aperiodic CSI and the PUCCH resource for reporting the aperiodic CSI to the user equipment through the first downlink control information, and reports the aperiodic CSI according to the reporting resource indicated by the first downlink control information. Compared with the method for reporting the aperiodic CSI by using the PUSCH, the method for reporting the aperiodic CSI by using the PUCCH can reduce the processing time for sending the aperiodic CSI, so that the base station can quickly acquire the CSI, and the scheduling accuracy of the base station can be improved.
Drawings
Fig. 1 is a flowchart of a method for triggering aperiodic CSI reporting according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention;
fig. 3 is a schematic diagram of another PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention;
fig. 4 is a schematic diagram of a PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention;
fig. 5 is a flowchart of an aperiodic CSI reporting method in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an apparatus for triggering aperiodic CSI reporting in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an aperiodic CSI reporting apparatus in an embodiment of the present invention.
Detailed Description
As described above, in the prior art, the PUSCH resource indicated in the downlink control information is used to report the aperiodic CSI. However, the processing time for reporting the aperiodic CSI by using the PUSCH resource is long, so that the base station cannot acquire the CSI quickly, and the scheduling accuracy of the base station is poor.
In the embodiment of the invention, the time slot for reporting the aperiodic CSI and the PUCCH resource for reporting the aperiodic CSI are indicated to the user equipment through the first downlink control information, and the user equipment reports the aperiodic CSI according to the reporting resource indicated by the first downlink control information. Compared with the method for reporting the aperiodic CSI by using the PUSCH, the method for reporting the aperiodic CSI by using the PUCCH can reduce the processing time for sending the aperiodic CSI, so that the base station can quickly acquire the CSI, and the scheduling accuracy of the base station can be improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
An embodiment of the present invention provides a method for triggering aperiodic CSI reporting, which is described in detail below with reference to fig. 1 through specific steps.
Step S101, configuring an aperiodic CSI trigger state table.
In a specific implementation, the base station may configure the aperiodic CSI trigger state table through higher layer signaling. In the embodiment of the present invention, the higher layer signaling may be Radio Resource Control (RRC) signaling.
The aperiodic CSI trigger state table configured by the base station may include one or M aperiodic CSI trigger states, where M ≧ 2. One aperiodic CSI trigger state may include one or NRepThe time slot interval of the jth aperiodic CSI report is Yj. The CSI reporting related configuration information may include related reference signal configuration.
The specific base station how to configure the aperiodic CSI trigger state table and the specific information in the aperiodic CSI trigger state table may refer to the existing protocol, and the configuration process of the aperiodic CSI trigger state table and the content contained in the aperiodic CSI trigger state table are not changed in the present invention.
Step S102, indicating triggering aperiodic CSI triggering state to user equipment.
In a specific implementation, higher layer signaling, for example, RRC signaling, may configure the number N of bits of the CSI request field included in the first downlink control information. When 2 is inNWhen the current CSI trigger state is more than or equal to M, the MAC CE can select at least one aperiodic CSI trigger state from the aperiodic CSI trigger state table and indicate the selected aperiodic CSI trigger state to the user equipment; on the contrary, when 2NWhen-1 < M, the CSI request field carried in the first downlink control information may be used to indicate an aperiodic CSI trigger state.
Specifically, the process and principle of how to indicate the triggering aperiodic CSI triggering state to the ue may also refer to the existing protocol, and the embodiment of the present invention does not improve the indication of the triggering aperiodic CSI triggering state to the ue.
Step S103, sending the first downlink control information to the user equipment.
In a specific implementation, after the base station configures the aperiodic CSI trigger state table and indicates to the ue that the aperiodic CSI trigger state is triggered, the base station may issue first Downlink Control Information (DCI) to the ue. In the first DCI, the following may be included: indicating whether the first DCI only triggers the content of the aperiodic CSI report and indicating resources used when the user equipment reports the aperiodic CSI; the resource used when the user equipment is instructed to report the aperiodic CSI may include: reporting a time slot used by the aperiodic CSI, and reporting a Physical Uplink Control Channel (PUCCH) resource used by the aperiodic CSI.
After receiving the first downlink control information, the ue may measure the relevant reference signal configuration in the CSI reporting relevant configuration information according to the aperiodic CSI trigger state indicated in step S102. And the user equipment determines the resource for reporting the aperiodic CSI from the first downlink control information, and reports the aperiodic CSI on the determined resource.
In a specific implementation, if the first Downlink control information indicates that only aperiodic CSI reporting is triggered, that is, the first Downlink control information is only used for triggering aperiodic CSI reporting, at this time, the first Downlink control information does not need to trigger a Physical Downlink Shared Channel (PDSCH) at the same time. Therefore, many fields for indicating the PDSCH in the first downlink control information may not be used.
For example, a field indicating a frequency domain resource assignment used in the first downlink control information, a modulation and coding scheme (modulation and coding scheme), a new data indicator (new data indicator), a redundancy version (redundancy version), and a HARQ process number (HARQ process number) are all used to indicate triggering of the PDSCH. Since the first downlink control information is only used to trigger aperiodic CSI reporting, the above fields are not actually used.
In the embodiment of the present invention, the field may be used to indicate which aperiodic CSI report is triggered, or which aperiodic CSI reports are triggered. That is, the field for triggering PDSCH in the first downlink control information may be used to identify aperiodic CSI that needs to be triggered.
In the embodiment of the present invention, the total bits of the fields may use a bitmap to indicate which aperiodic CSI is reported when the first downlink control information is triggered, that is, each bit in the bitmap may correspond to a trigger of an aperiodic CSI.
In a specific implementation, when the first downlink control information only triggers aperiodic CSI reporting, a timeslot for reporting aperiodic CSI may be indicated by the following formula:
Figure BDA0002446743620000091
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepAnd m is a value of a time domain resource allocation field indication carried in the first downlink control information, and corresponds to a time domain resource table index m + 1.
When the first downlink control information only triggers aperiodic CSI reporting, the slot offset may also be indicated in the first downlink control information, and at this time, the slot for reporting the aperiodic CSI is: the slot offset is the sum of the slots of the uplink slots corresponding to the PDCCH end time corresponding to the first downlink control information.
In this embodiment of the present invention, the first downlink control information may include the following fields: a PDSCH-to-HARQ _ feedback timing indicator field, which indicates the slot offset through the PDSCH-to-HARQ _ feedback timing indicator field.
Referring to fig. 2, a schematic diagram of a Physical Downlink Control Channel (PDCCH) and a corresponding PUCCH corresponding to a timeslot in an embodiment of the present invention is shown. For the two time slots indicating reporting of the aperiodic CSI, an example is described with reference to fig. 2.
For example, the end position of the PDCCH corresponds to the uplink slot n +1, K 21, the ue reports aperiodic CSI in timeslot n + 2.
For another example, the end position of the PDCCH corresponds to the uplink timeslot n +1, and the timeslot offset is indicated to be 1 in the first downlink control information. Therefore, the ue may report aperiodic CSI in timeslot n + 2.
In a specific implementation, the number of PUCCH resources for reporting aperiodic CSI indicated by the first downlink control information may be one or multiple. When only one PUCCH resource for reporting aperiodic CSI is configured, the ue may use the configured PUCCH resource to report aperiodic CSI. When configuring a plurality of PUCCH resources for reporting aperiodic CSI, different Uplink Control Information (UCI) bit intervals may be configured to correspond to different PUCCH resources. The user equipment can determine a corresponding UCI bit interval according to the number of UCIs, and then report the aperiodic CSI on PUCCH resources corresponding to the determined UCI bit interval.
In a specific implementation, if the first downlink control information does not include an indication for triggering only aperiodic CSI reporting, it means that the first downlink control information further indicates that PDSCH reporting is performed. At this time, the first downlink control information may not carry an indication that only the aperiodic CSI report is triggered; or, in the first downlink control information, it is indicated that the PDSCH needs to be reported. The content reported by the PDSCH can be HARQ-ACK.
When the first downlink control information indicates that aperiodic CSI reporting and PDSCH reporting are required, if the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK share the same PUCCH resource, the slot for aperiodic CSI reporting and the PUCCH resource used for aperiodic CSI reporting may be determined according to the existing protocol.
In the embodiment of the present invention, in the first downlink control information, a PDSCH-to-HARQ _ feedback timing indicator field may be used to indicate that the HARQ-ACK and the slot corresponding to the aperiodic CSI are reported, and a PUCCH resource used for aperiodic CSI reporting and HARQ-ACK reporting is indicated by a PUCCH resource indicator.
In a specific implementation, when the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK share a PUCCH resource, before uplink feedback is not performed, second downlink control information indicating a new PUCCH resource is received, and when the second downlink control information does not indicate a resource for aperiodic CSI reporting, it may be determined that the PUCCH resource for aperiodic CSI is located in the new PUCCH resource, and the PUCCH resource corresponding to HARQ-ACK is also located in the new PUCCH resource.
Referring to fig. 3, a schematic diagram of another PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention is shown. In fig. 3, in slot n, the PDCCH ends at symbol 1, and in symbols 3-13 of slot n, the aperiodic CSI report and HARQ-ACK share PUCCH resources through the first downlink control information indication; as shown in fig. 3, at slot n, PUCCH resources for CSI + PDSCH AN feedback are indicated, PDSCH AN including PDSCH HARQ-ACK and PDSCH HARQ-NACK.
And in slot n +1, indicating a new PUCCH resource through second downlink control information, wherein the second downlink control information only indicates the PUCCH resource of the PDSCH AN, and the corresponding uplink slot is slot n +2, and reporting the aperiodic CSI and the HARQ-ACK on symbols 9-13 of the slot n + 2.
In a specific implementation, when the first downlink control information indicates that aperiodic CSI reporting and PUCCH resources corresponding to HARQ-ACK are different, before aperiodic CSI reporting is not performed, if third downlink control information indicating a new PUCCH resource is received and the third downlink control information does not indicate a resource for aperiodic CSI reporting, it may be determined that the PUCCH resource for reporting aperiodic CSI is a PUCCH resource indicated by the first downlink control information, and the PUCCH resource corresponding to HARQ-ACK is a PUCCH resource indicated by the third downlink control information.
When the first downlink control information indicates that the aperiodic CSI report is different from the PUCCH resource corresponding to the HARQ-ACK, if only one PUCCH resource for reporting the aperiodic CSI is configured in the first downlink control information, the ue may use the configured PUCCH resource to report the aperiodic CSI. When configuring a plurality of PUCCH resources for reporting aperiodic CSI, different Uplink Control Information (UCI) bit intervals may be configured to correspond to different PUCCH resources. The user equipment can determine a corresponding UCI bit interval according to the number of UCIs, and then report the aperiodic CSI on PUCCH resources corresponding to the determined UCI bit interval.
Referring to fig. 4, a schematic diagram of a PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention is shown. In fig. 4, in slot n, the first downlink control information indicates PUCCH resources fed back by CSI + PDSCH AN. In slot n +1, the third downlink control information indicates the PUCCH resource fed back by the PDSCH AN. In slot n +2, symbols 2 to 4 are PUCCH resources corresponding to aperiodic CSI, and symbols 9 to 13 are PUCCH resources corresponding to HARQ-ACK.
In a specific implementation, when the first downlink control information indicates that the aperiodic CSI report and the PUCCH resource corresponding to the HARQ-ACK are different, the time slot corresponding to the aperiodic CSI report and the reporting of the HARQ-ACK may be determined by using the existing HARQ-ACK protocol, which is not described in detail in the embodiment of the present invention.
In a specific implementation, when the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting are in different time slots and use different PUCCH resources, the reporting time slot of HARQ-ACK may be determined by using an existing HARQ-ACK protocol. The time slot for aperiodic CSI reporting can be indicated by the following formula:
Figure BDA0002446743620000121
when the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting are in different slots and use different PUCCH resources, the PUCCH resources for aperiodic CSI reporting may be determined as follows:
if only one PUCCH resource for reporting aperiodic CSI is configured in the first downlink control information, the ue may use the configured PUCCH resource to report aperiodic CSI. When configuring a plurality of PUCCH resources for reporting aperiodic CSI, different Uplink Control Information (UCI) bit intervals may be configured to correspond to different PUCCH resources. The user equipment can determine a corresponding UCI bit interval according to the number of UCIs, and then report the aperiodic CSI on PUCCH resources corresponding to the determined UCI bit interval.
In a specific implementation, the PUCCH resource of the aperiodic CSI may also be indicated in the first downlink control information, that is, the specific PUCCH resource used for aperiodic CSI reporting is directly indicated in the first downlink control information.
As can be known in the prior art, the PUSCH needs to be processed together with a data block (TB), which results in a long processing period for reporting the aperiodic CSI by using the PUSCH. If the uplink DCI is used alone to trigger the aperiodic CSI report, PDCCH resources are wasted.
In the embodiment of the present invention, the time slot for reporting the aperiodic CSI and the PUCCH resource for reporting the aperiodic CSI are indicated to the user equipment through the first downlink control information, and the user equipment reports the aperiodic CSI according to the reporting resource indicated by the first downlink control information. Compared with the method for reporting the aperiodic CSI by using the PUSCH, the method for reporting the aperiodic CSI by using the PUCCH can reduce the processing time for sending the aperiodic CSI, so that the base station can quickly acquire the CSI, and the scheduling accuracy of the base station can be improved.
An embodiment of the present invention further provides an aperiodic CSI reporting method, which is described in detail below with reference to fig. 5 through specific steps.
In step S501, first downlink control information is received.
In a specific implementation, the first downlink control information may include the following: indicating whether the first downlink control information only triggers the content of the aperiodic CSI report and indicating resources used when the user equipment reports the aperiodic CSI; the resource used when the user equipment is instructed to report the aperiodic CSI may include: reporting a time slot used by the aperiodic CSI and reporting PUCCH resources used by the aperiodic CSI.
In the embodiment of the present invention, the specific content in the first downlink control information may refer to the descriptions in step S101 to step S103, which is not described in detail in the embodiment of the present invention.
Step S502, measuring the configuration of the CSI reporting related reference signals.
In a specific implementation, referring to steps S101 to S102, the base station indicates one or more aperiodic CSI trigger states to the ue. The measured CSI reporting related reference signal configuration is carried by CSI reporting related configuration information corresponding to the aperiodic CSI trigger state.
In a specific implementation, a specific workflow for measuring CSI reporting relevant reference signal configuration may refer to an existing protocol, which is not described in detail in the embodiments of the present invention.
Step S503, determining the resource for reporting the aperiodic CSI, and reporting the aperiodic CSI on the determined resource.
In a specific implementation, when the first downlink control information is only used to trigger aperiodic CSI reporting, the following formula may be used to determine a timeslot for reporting aperiodic CSI:
Figure BDA0002446743620000131
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepThe number of aperiodic CSI reports.
When the first downlink control information indicates that the aperiodic CSI report and the HARQ-ACK report use different PUCCH resources in different slots, the slot for reporting the aperiodic CSI may also be determined by using the following formula:
Figure BDA0002446743620000132
the time slot used for reporting the HARQ-ACK can be determined according to the existing HARQ-ACK protocol, which is not described in detail in the embodiments of the present invention.
In a specific implementation, when the first downlink control information only triggers aperiodic CSI reporting, a slot offset may also be indicated in the first downlink control information, and an uplink slot corresponding to a PDCCH end time corresponding to the first downlink control information is added to the slot offset, and an obtained sum is used as a slot for reporting aperiodic CSI.
When the first downlink control information indicates that the aperiodic CSI report and the HARQ-ACK report use different PUCCH resources in different time slots, the slot offset may also be indicated in the first downlink control information, and the uplink time slot corresponding to the PDCCH end time corresponding to the first downlink control information is added to the slot offset, and the obtained sum is used as the time slot for reporting the aperiodic CSI.
In a specific implementation, when first downlink control information is only used for triggering aperiodic CSI reporting, or the first downlink control information indicates that PUCCH resources corresponding to aperiodic CSI reporting and HARQ-ACK are different, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different slots, the following manner may be adopted to determine resources for reporting aperiodic CSI:
when only one PUCCH resource for reporting aperiodic CSI is configured, the ue may use the configured PUCCH resource to report aperiodic CSI. When configuring a plurality of PUCCH resources for reporting aperiodic CSI, different Uplink Control Information (UCI) bit intervals may be configured to correspond to different PUCCH resources. The user equipment can determine a corresponding UCI bit interval according to the number of UCIs, and then report the aperiodic CSI on PUCCH resources corresponding to the determined UCI bit interval.
In a specific implementation, when the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK share PUCCH resources, if second downlink control information indicating a new PUCCH resource is received and the second downlink control information does not indicate a resource for aperiodic CSI reporting, the PUCCH resources for aperiodic CSI reporting and HARQ-ACK reporting are both the new PUCCH resource indicated by the second downlink control information.
In a specific implementation, when the first downlink control information indicates that aperiodic CSI reporting and PUCCH resources corresponding to HARQ-ACK are different, if third downlink control information indicating a new PUCCH resource is received and the third downlink control information does not indicate a resource for aperiodic CSI reporting, it is determined that the PUCCH resource for aperiodic CSI reporting is still the PUCCH resource indicated by the first downlink control information, and the PUCCH resource corresponding to HARQ-ACK is the new PUCCH resource indicated by the third downlink control information.
Referring to fig. 6, a device 60 for triggering aperiodic CSI reporting in the embodiment of the present invention is shown, including: configuration unit 601, instruction unit 602, and transmission unit 603, wherein:
a configuration unit 601, configured to configure an aperiodic CSI trigger state table, where the aperiodic CSI trigger state table includes 1 or M aperiodic CSI trigger states, and one aperiodic CSI trigger state includes at least one CSI reporting related configuration information; m is the number of aperiodic CSI trigger states in the aperiodic CSI trigger state table;
an indicating unit 602, configured to indicate a triggered aperiodic CSI triggered state to a user equipment;
a sending unit 603, configured to issue first downlink control information to the ue, so that the ue performs aperiodic CSI reporting according to the first downlink control information; the first downlink control information includes: and indicating whether the first downlink control information only triggers aperiodic CSI reporting and indicating resources for reporting the aperiodic CSI to the user equipment, wherein the resources for reporting the aperiodic CSI comprise a time slot for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI.
In a specific implementation, when the first downlink control information only triggers aperiodic CSI reporting, a field corresponding to triggering PDSCH in the first downlink control information may be used to identify the aperiodic CSI.
In a specific implementation, when the first downlink control information only triggers aperiodic CSI reporting, the timeslot for reporting the aperiodic CSI may be indicated in the following manner: indicating a slot offset in the first downlink control information; the time slot for reporting the aperiodic CSI is as follows: the slot offset is the sum of slots of uplink slots corresponding to the PDCCH end time corresponding to the first downlink control information.
In a specific implementation, when the first downlink control information only triggers aperiodic CSI reporting, the timeslot for reporting the aperiodic CSI may be indicated by the following formula:
Figure BDA0002446743620000151
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepThe number of aperiodic CSI reports.
In specific implementation, when a plurality of PUCCH resources for reporting the aperiodic CSI are provided, corresponding PUCCH resources may exist in different UCI bit intervals; and the user equipment determines a UCI bit interval according to the number of UCI and reports the aperiodic CSI on PUCCH resources corresponding to the determined UCI bit interval.
In a specific implementation, the indicating unit 602 may be configured to: configuring the number N of bits of a CSI request field in the first downlink control information; when 2 is inN-when 1 ≧ M, selecting at least one aperiodic CSI trigger state from the aperiodic CSI trigger state table and indicating to the user equipment; when 2 is inN-1 < M, in the first downlink control information, using the CSI request field to indicate an aperiodic CSI trigger state.
Referring to fig. 7, an aperiodic CSI reporting apparatus 70 in the embodiment of the present invention is provided, including: a receiving unit 701, a measuring unit 702, a determining unit 703 and a reporting unit 704, wherein:
a receiving unit 701, configured to receive first downlink control information; the first downlink control information includes: indicating whether the first downlink control information only triggers indication information for reporting aperiodic CSI and indicating resources for reporting the aperiodic CSI, wherein the resources for reporting the aperiodic CSI comprise time slots for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI;
a measurement unit 702, configured to measure CSI reporting related reference signal configuration;
a determining unit 703, configured to determine a resource for reporting the aperiodic CSI;
a reporting unit 704, configured to report the aperiodic CSI on the determined resource.
In a specific implementation, when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different slots, the determining unit 703 may be configured to determine a slot for reporting the aperiodic CSI by using the following formula:
Figure BDA0002446743620000161
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepThe number of aperiodic CSI reports.
In a specific implementation, when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different slots, the determining unit 703 may be configured to obtain a slot offset indicated in the first downlink control information; and adding an uplink time slot corresponding to the PDCCH end time corresponding to the first downlink control information and the time slot offset to obtain a sum value serving as the time slot for reporting the aperiodic CSI.
In a specific implementation, the determining unit 703 may be configured to determine the UCI bit interval according to the number of UCI bits when the number of PUCCH resources reporting the aperiodic CSI is multiple and different UCI bit intervals correspond to different PUCCH resources, where the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates that the PUCCH resources corresponding to the aperiodic CSI reporting and the HARQ-ACK reporting are different, or the first downlink control information indicates that the aperiodic CSI reporting and the HARQ-ACK reporting use different PUCCH resources in different slots; and determining the PUCCH resource reporting the aperiodic CSI according to the determined UCI bit interval.
In a specific implementation, the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK share PUCCH resources, and if second downlink control information indicating a new PUCCH resource is received and the second downlink control information does not indicate a resource for aperiodic CSI reporting, the determining unit 703 may be configured to determine that the PUCCH resource for reporting aperiodic CSI and the PUCCH resource corresponding to HARQ-ACK are: the new PUCCH resource indicated by the second downlink control information.
In a specific implementation, the first downlink control information indicates that aperiodic CSI reporting is different from PUCCH resources corresponding to HARQ-ACK, and if third downlink control information indicating a new PUCCH resource is received and the third downlink control information does not indicate a resource for aperiodic CSI reporting, the determining unit 703 may be configured to determine that the PUCCH resource for aperiodic CSI reporting is the PUCCH resource indicated by the first downlink control information, and the PUCCH resource corresponding to HARQ-ACK is the PUCCH resource indicated by the third downlink control information.
The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs the steps of the method for triggering aperiodic CSI reporting provided in any of the above embodiments.
The embodiment of the present invention further provides another computer-readable storage medium, where a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the aperiodic CSI reporting method provided in any of the above embodiments are performed.
The embodiment of the present invention further provides a device for triggering aperiodic CSI reporting, which includes a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor executes the steps of the method for triggering aperiodic CSI reporting provided in any of the above embodiments when running the computer program.
The embodiment of the present invention further provides another aperiodic CSI reporting apparatus, which includes a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor executes the steps of the aperiodic CSI reporting method provided in any of the above embodiments when running the computer program.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by instructing the relevant hardware through a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (17)

1. A method for triggering aperiodic CSI report, comprising:
configuring an aperiodic CSI trigger state table, wherein the aperiodic CSI trigger state table comprises 1 or M aperiodic CSI trigger states, and one aperiodic CSI trigger state comprises at least one CSI reporting related configuration information; m is the number of aperiodic CSI trigger states in the aperiodic CSI trigger state table;
indicating a triggering aperiodic CSI triggering state to user equipment;
issuing first downlink control information to the user equipment so that the user equipment carries out aperiodic CSI reporting according to the first downlink control information;
the first downlink control information includes: and indicating whether the first downlink control information only triggers aperiodic CSI reporting and indicating resources for reporting the aperiodic CSI to the user equipment, wherein the resources for reporting the aperiodic CSI comprise a time slot for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI.
2. The method of claim 1, wherein when the first downlink control information only triggers aperiodic CSI reporting, a field corresponding to a PDSCH triggered in the first downlink control information is used to identify the aperiodic CSI.
3. The method of claim 1, wherein when the first downlink control information only triggers aperiodic CSI reporting, the timeslot for reporting the aperiodic CSI is indicated as follows:
indicating a slot offset in the first downlink control information;
the time slot for reporting the aperiodic CSI is as follows: the slot offset is the sum of slots of uplink slots corresponding to the PDCCH end time corresponding to the first downlink control information.
4. The method of claim 1, wherein when the first downlink control information only triggers aperiodic CSI reporting, the timeslot for reporting the aperiodic CSI is indicated by the following formula:
Figure FDA0002446743610000011
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepAnd m is a value of a time domain resource allocation field indication carried in the first downlink control information, and corresponds to a time domain resource table index m + 1.
5. The method of claim 1, wherein when there are multiple PUCCH resources for reporting the aperiodic CSI, PUCCH resources corresponding to different UCI bit intervals are used; and the user equipment determines a UCI bit interval according to the number of UCI and reports the aperiodic CSI on PUCCH resources corresponding to the determined UCI bit interval.
6. An aperiodic CSI reporting method, comprising:
receiving first downlink control information; the first downlink control information includes: indicating whether the first downlink control information only triggers indication information for reporting aperiodic CSI and indicating resources for reporting the aperiodic CSI, wherein the resources for reporting the aperiodic CSI comprise time slots for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI;
measuring CSI reporting related reference signal configuration;
and determining a resource for reporting the aperiodic CSI, and reporting the aperiodic CSI on the determined resource.
7. The aperiodic CSI reporting method according to claim 6, wherein when the first downlink control information only triggers aperiodic CSI reporting or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different slots, the determining the resources for reporting the aperiodic CSI comprises:
determining a time slot for reporting the aperiodic CSI by adopting the following formula:
Figure FDA0002446743610000021
wherein, K2For reporting the time slot identifier, Y, of the aperiodic CSIjTime slot interval for jth aperiodic CSI report, j ═ 0, … …, NRep-1，NRepAnd m is a value of a time domain resource allocation field indication carried in the first downlink control information, and corresponds to a time domain resource table index m + 1.
8. The aperiodic CSI reporting method according to claim 6, wherein when the first downlink control information only triggers aperiodic CSI reporting or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different slots, the determining the resources for reporting the aperiodic CSI comprises:
acquiring the time slot offset indicated in the first downlink control information;
and adding an uplink time slot corresponding to the PDCCH end time corresponding to the first downlink control information and the time slot offset to obtain a sum value serving as the time slot for reporting the aperiodic CSI.
9. The aperiodic CSI reporting method according to claim 6, wherein the determining the resource for reporting the aperiodic CSI only triggers aperiodic CSI reporting, or the first downlink control information indicates that PUCCH resources corresponding to aperiodic CSI reporting and HARQ-ACK are different, or the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK reporting use different PUCCH resources in different slots, comprises:
when the number of PUCCH resources reporting the aperiodic CSI is multiple and different UCI bit intervals correspond to different PUCCH resources, determining the UCI bit intervals according to the number of UCI;
and determining the PUCCH resource reporting the aperiodic CSI according to the determined UCI bit interval.
10. The aperiodic CSI reporting method according to claim 6, wherein the first downlink control information indicates that aperiodic CSI reporting and HARQ-ACK share PUCCH resources, and when second downlink control information indicating a new PUCCH resource is received and there is no resource indicating aperiodic CSI reporting in the second downlink control information, the determining a resource for reporting aperiodic CSI further comprises:
determining that the PUCCH resource reporting the aperiodic CSI and the PUCCH resource corresponding to the HARQ-ACK are as follows: the new PUCCH resource indicated by the second downlink control information.
11. The aperiodic CSI reporting method according to claim 6, wherein the first downlink control information indicates that aperiodic CSI reporting is different from PUCCH resources corresponding to HARQ-ACK, and when third downlink control information indicating a new PUCCH resource is received and the third downlink control information does not indicate a resource for aperiodic CSI reporting, the determining a resource for reporting aperiodic CSI further comprises:
determining that the PUCCH resource reporting the aperiodic CSI is the PUCCH resource indicated by the first downlink control information, and the PUCCH resource corresponding to the HARQ-ACK is the PUCCH resource indicated by the third downlink control information.
12. An apparatus for triggering aperiodic CSI reporting, comprising:
the system comprises a configuration unit and a configuration unit, wherein the configuration unit is used for configuring an aperiodic CSI trigger state table, the aperiodic CSI trigger state table comprises 1 or M aperiodic CSI trigger states, and one aperiodic CSI trigger state comprises at least one CSI reporting related configuration information; m is the number of aperiodic CSI trigger states in the aperiodic CSI trigger state table;
an indication unit, configured to indicate a triggered aperiodic CSI trigger state to a user equipment;
a sending unit, configured to issue first downlink control information to the ue, so that the ue performs aperiodic CSI reporting according to the first downlink control information; the first downlink control information includes: and indicating whether the first downlink control information only triggers aperiodic CSI reporting and indicating resources for reporting the aperiodic CSI to the user equipment, wherein the resources for reporting the aperiodic CSI comprise a time slot for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI.
13. An aperiodic CSI reporting apparatus, comprising:
a receiving unit, configured to receive first downlink control information; the first downlink control information includes: indicating whether the first downlink control information only triggers indication information for reporting aperiodic CSI and indicating resources for reporting the aperiodic CSI, wherein the resources for reporting the aperiodic CSI comprise time slots for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI;
the measurement unit is used for measuring the configuration of the CSI reporting related reference signals;
a determining unit, configured to determine a resource for reporting the aperiodic CSI;
and a reporting unit, configured to report the aperiodic CSI on the determined resource.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the method for triggering aperiodic CSI report as claimed in any one of claims 1 to 5.
15. A computer-readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the steps of the aperiodic CSI reporting method according to any one of claims 6-11.
16. An apparatus for triggering aperiodic CSI report, comprising a memory and a processor, wherein the memory stores a computer program operable on the processor, and the processor executes the computer program to perform the steps of the method for triggering aperiodic CSI report according to any of claims 1 to 5.
17. An aperiodic CSI reporting apparatus, comprising a memory and a processor, wherein the memory stores a computer program operable on the processor, and the processor executes the computer program to perform the steps of the aperiodic CSI reporting method according to any one of claims 6 to 11.
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