CN113518376B - Method for indicating aperiodic CSI priority, CSI reporting method, device and medium - Google Patents

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

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CN113518376B
CN113518376B CN202010280746.8A CN202010280746A CN113518376B CN 113518376 B CN113518376 B CN 113518376B CN 202010280746 A CN202010280746 A CN 202010280746A CN 113518376 B CN113518376 B CN 113518376B
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aperiodic csi
priority
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CN113518376A (en
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周欢
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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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • 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
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information

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Abstract

A method for indicating aperiodic CSI priority, a CSI reporting method, a device and a medium are provided, wherein the method for indicating aperiodic CSI priority comprises the following steps: configuring a priority corresponding to aperiodic CSI, wherein the priority corresponding to the aperiodic CSI is suitable for indicating that the aperiodic CSI corresponds to a high-priority PUCCH resource or a low-priority PUCCH resource; and issuing the priority of the aperiodic CSI to user equipment. By the scheme, the base station can quickly acquire the aperiodic CSI reported by the PUCCH with high priority, and the scheduling timeliness and accuracy of the base station are improved.

Description

Method for indicating aperiodic CSI priority, CSI reporting method, device and medium
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method for indicating aperiodic CSI priority, a CSI reporting method, an apparatus, and a medium.
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 reported by the jth aperiodic CSI j . The number N of bits of a CSI request field contained in Downlink Control Information (DCI) configured by a high-level signaling; if 2 N If 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 for indicating 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.
In the prior art, for the reporting of the aperiodic CSI, the processing time is long, so that the base station cannot quickly acquire the CSI, 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 is long, so that a 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 indicating aperiodic CSI priority, including: configuring a priority corresponding to aperiodic CSI, wherein the priority corresponding to the aperiodic CSI is suitable for indicating that the aperiodic CSI corresponds to a high-priority PUCCH resource or a low-priority PUCCH resource; and issuing the priority of the aperiodic CSI to user equipment.
Optionally, the configuring the priority corresponding to the aperiodic CSI includes: configuring a priority indication for aperiodic CSI reporting.
Optionally, the configuring the priority corresponding to the aperiodic CSI includes: and configuring a priority indication of the aperiodic CSI trigger states, wherein the priorities of all aperiodic CSI reports corresponding to each aperiodic CSI trigger state are the same.
Optionally, when the priority corresponding to the aperiodic CSI report is a high priority, the aperiodic CSI report uses PUCCH resources in a high-priority PUCCH configuration; and when the priority corresponding to the aperiodic CSI report is low, the aperiodic CSI report uses PUCCH resources in low-priority PUCCH configuration.
Optionally, the issuing the priority of the aperiodic CSI to the ue includes: and sending the priority of the aperiodic CSI to the user equipment by adopting RRC signaling.
Optionally, the configuring the priority corresponding to the aperiodic CSI includes: and configuring the priority corresponding to the aperiodic CSI to be the same as the priority of a downlink control information indication triggering the user equipment to carry out aperiodic CSI reporting.
The embodiment of the invention also provides an aperiodic CSI reporting method, which comprises the following steps: 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 sub-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 resource for reporting the aperiodic CSI.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates aperiodic CSI and HARQ-ACK to share PUCCH resources, or the first downlink control information indicates aperiodic CSI and HARQ-ACK to use different PUCCH resources in different sub-slots, the determining resources for reporting aperiodic CSI includes: the sub-slot offset is determined using the following equation:
Figure BDA0002446473190000031
wherein, K 2 For reporting the sub-slot identifier, Y, of the aperiodic CSI j J =0, \8230; N is the sub-slot interval for the jth aperiodic CSI report Rep -1，N Rep The number of the aperiodic CSI reports; and performing offset addition on an uplink sub-slot corresponding to the PDCCH end time corresponding to the first downlink control information and the sub-slot to obtain a sum, and using the sum as the sub-slot for reporting the aperiodic CSI.
Optionally, the determining, when the first downlink control information indicates that the aperiodic CSI is different from PUCCH resources corresponding to HARQ-ACK, and when second downlink control information is received and no resource for reporting the aperiodic CSI is indicated in the second downlink control information, the determining a resource for reporting the 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 second downlink control information.
Optionally, the determining resources for reporting 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 and HARQ-ACK are different, or the first downlink control information indicates that aperiodic CSI and HARQ-ACK use different PUCCH resources in different slots, includes: when the number of the 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.
The embodiment of the invention also provides a device for indicating the aperiodic CSI priority, which comprises the following steps: the configuration unit is used for configuring the priority corresponding to the aperiodic CSI, and the priority corresponding to the aperiodic CSI is suitable for indicating that the aperiodic CSI corresponds to a high-priority PUCCH resource or a low-priority PUCCH resource; and the sending unit is used for sending the priority of the aperiodic CSI to the user equipment.
Optionally, the configuration unit is configured to configure the priority indication of the aperiodic CSI report.
Optionally, the configuration unit is configured to configure the priority indication of the aperiodic CSI trigger state, and the priorities of all the aperiodic CSI reports corresponding to each aperiodic CSI trigger state are the same.
Optionally, when the priority corresponding to the aperiodic CSI report is a high priority, the aperiodic CSI report uses PUCCH resources in a high-priority PUCCH configuration; and when the priority corresponding to the aperiodic CSI report is low, the aperiodic CSI report uses PUCCH resources in low-priority PUCCH configuration.
Optionally, the sending unit is configured to send the priority of the aperiodic CSI to the ue by using RRC signaling.
Optionally, the configuration unit is configured to configure that a priority corresponding to the aperiodic CSI is the same as a priority indicated by downlink control information that triggers the ue to report the aperiodic CSI.
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 sub-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 the reporting unit is used for reporting the aperiodic CSI on the aperiodic CSI resources.
Optionally, when the first downlink control information only triggers aperiodic CSI reporting, or the first downlink control information indicates aperiodic CSI and HARQ-ACK to share PUCCH resources, or the first downlink control information indicates aperiodic CSI and HARQ-ACK to use different PUCCH resources in different sub-slots, the determining unit is configured to determine the sub-slot offset by using the following formula:
Figure BDA0002446473190000041
wherein, K 2 For reporting the sub-slot identifier, Y, of the aperiodic CSI j Sub-slot interval for jth aperiodic CSI reporting, j =0, \8230;, N Rep -1，N Rep The number reported for the aperiodic CSI; and performing offset addition on an uplink sub-slot corresponding to the PDCCH end time corresponding to the first downlink control information and the sub-slot to obtain a sum, and using the sum as the sub-slot for reporting the aperiodic CSI.
Optionally, the first downlink control information indicates that aperiodic CSI is different from PUCCH resources corresponding to HARQ-ACK, and if second downlink control information is received and no resource for reporting the aperiodic CSI is indicated in the second downlink control information, the determining unit is configured to determine that the PUCCH resource for reporting the aperiodic CSI 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 second downlink control information.
Optionally, the determining unit is configured to determine the UCI interval according to the number of UCIs when the number of PUCCH resources reporting aperiodic CSI is multiple and different UCI 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 PUCCH resources corresponding to aperiodic CSI and HARQ-ACK are different, or the first downlink control information indicates that aperiodic CSI and HARQ-ACK use different PUCCH resources in different slots; and determining the PUCCH resource for reporting the aperiodic CSI according to the determined UCI bit interval.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor, and the computer program performs any of the above steps of the method for indicating aperiodic CSI priority.
The embodiment of the present invention further provides another computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program executes any of the steps of the aperiodic CSI reporting method described above.
The embodiment of the present invention further provides another apparatus for triggering aperiodic CSI reporting, which includes a memory and a processor, where a computer program that can be run on the processor is stored in the memory, and when the processor runs the computer program, the processor executes any of the above steps of the method for indicating aperiodic CSI priority.
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:
by configuring the priority corresponding to the aperiodic CSI and sending the priority of the aperiodic CSI to the user equipment, the user equipment can acquire the priority of the aperiodic CSI, and then the user equipment can report the aperiodic CSI on the PUCCH resources of the corresponding priority. By the scheme, the base station can quickly acquire the aperiodic CSI reported by the PUCCH with high priority, so that the timeliness and the accuracy of base station scheduling are improved.
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 accuracy of base station scheduling can be improved. When the aperiodic CSI is reported, the reporting based on the sub-time slot is adopted, so that the base station can acquire the aperiodic CSI more quickly, and the scheduling accuracy of the base station is further improved.
Drawings
Fig. 1 is a method for indicating aperiodic CSI priority in an embodiment of the present invention;
fig. 2 is a diagram of an aperiodic CSI reporting method in an embodiment of the present invention;
fig. 3 is a schematic diagram of a PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention;
fig. 4 is a schematic diagram of another PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention;
fig. 5 is a schematic diagram of a PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention;
fig. 6 is a schematic diagram of a PDCCH corresponding to a corresponding PUCCH in a slot in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an apparatus for indicating aperiodic CSI priority in an embodiment of the present invention;
fig. 8 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 accuracy of scheduling by the base station is poor. Moreover, the user equipment cannot know the priority of the aperiodic CSI and cannot report the aperiodic CSI with high priority in time.
In the embodiment of the invention, the priority corresponding to the aperiodic CSI is configured, and the priority of the aperiodic CSI is issued to the user equipment, so that the user equipment can acquire the priority of the aperiodic CSI, and further the user equipment can report the aperiodic CSI on PUCCH resources of corresponding priorities. By the scheme, the base station can rapidly acquire the aperiodic CSI reported by the PUCCH with high priority, and the scheduling timeliness and accuracy of the base station are 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 indicating aperiodic CSI priority, which is described in detail with reference to fig. 1 through specific steps.
Step S101, configuring the priority corresponding to the aperiodic CSI.
In the embodiment of the present invention, the priority corresponding to the aperiodic CSI may be used to indicate whether the aperiodic CSI corresponds to a high priority Physical Uplink Control Channel (PUCCH) or a low priority PUCCH.
In a specific implementation, the configuration of the priority corresponding to the aperiodic CSI may be realized by configuring a priority indication of an aperiodic CSI report (a-CSI report). When the priority corresponding to the aperiodic CSI report is high priority, and the aperiodic CSI report uses PUCCH resources in high-priority PUCCH configuration (PUCCH-config) when the aperiodic CSI is reported; and when the priority corresponding to the aperiodic CSI report is low, and the aperiodic CSI report uses PUCCH resources in the low-priority PUCCH configuration when the aperiodic CSI is reported.
In the embodiment of the present invention, if the PUCCH-config is reported based on a sub-slot (sub-slot based), the aperiodic CSI is reported based on the sub-slot.
In specific implementation, the priority indication of the aperiodic CSI trigger state may also be configured, so as to implement the indication of the priority corresponding to the aperiodic CSI. Configuring a priority indication of the aperiodic CSI triggering state, that is, indicating whether one aperiodic CSI triggering state corresponds to a high-priority PUCCH or a low-priority PUCCH.
In practical application, it is known that 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 more CSI reporting related configuration information.
In the embodiment of the present invention, while configuring the aperiodic CSI trigger state table, the priority corresponding to each aperiodic CSI trigger state in the aperiodic CSI trigger state table may be configured accordingly.
As known in practical applications, one aperiodic CSI trigger state may include one or more aperiodic CSI reports. When a certain aperiodic CSI trigger state is configured, the priorities of all aperiodic CSI reports corresponding to the aperiodic CSI trigger state are the same.
For example, if the priority corresponding to one aperiodic CSI trigger state is configured to be a high priority, the priorities of all aperiodic CSI reports corresponding to the aperiodic CSI trigger state are all high priorities.
Accordingly, after determining the priority of the aperiodic CSI report, the priority of the PUCCH resource used when reporting the aperiodic CSI may be determined, that is, the priority of the PUCCH resource used when reporting the aperiodic CSI is determined as follows: when the priority corresponding to the aperiodic CSI report is high priority, and the aperiodic CSI report uses PUCCH resources in high-priority PUCCH configuration (PUCCH-config) when the aperiodic CSI is reported; and when the priority corresponding to the aperiodic CSI report is low priority and the aperiodic CSI is reported, the aperiodic CSI report uses PUCCH resources in the low-priority PUCCH configuration.
In specific implementation, when configuring the priority corresponding to the aperiodic CSI, the priority corresponding to the aperiodic CSI may also be indirectly configured. In the embodiment of the present invention, a priority indicated by Downlink Control Information (DCI) that triggers the ue to perform aperiodic CSI reporting may be configured, and the priority indicated by the DCI that triggers the ue to perform aperiodic CSI reporting is used as a priority corresponding to the aperiodic CSI, that is, the priority corresponding to the aperiodic CSI is configured to be the same as the priority indicated by the DCI.
In the embodiment of the present invention, the priority indicated by the DCI may be the priority of HARQ-ACK feedback. Therefore, the priority corresponding to the aperiodic CSI may be the same as the priority of the HARQ-ACK feedback.
And step S102, issuing the priority of the aperiodic CSI to user equipment.
As can be seen from the foregoing step S101, in the embodiment of the present invention, three schemes for configuring priorities corresponding to aperiodic CSI are provided, which sequentially include: 1) Configuring a priority of the aperiodic CSI report; 2) Configuring the priority of the aperiodic CSI trigger state; 3) The priority of the aperiodic CSI is set to be the same as the priority indicated by the DCI. In comparison, in the case of a high-frequency,
in specific implementation, for the above scheme 1) and scheme 2), the priority of the aperiodic CSI may be sent to the ue by using RRC signaling. As for the above scheme 3), after receiving the downlink control information, the user equipment may acquire the priority indicated by the downlink control information, and then determine the priority of the aperiodic CSI according to the priority indicated by the downlink control information.
After receiving the priority of the aperiodic CSI, the user equipment determines a corresponding PUCCH according to the priority corresponding to the aperiodic CSI when reporting the aperiodic CSI, and reports the aperiodic CSI on the determined PUCCH.
In a specific implementation, with respect to the above schemes 1) to 2), the priority of the aperiodic CSI is configured through RRC signaling. Furthermore, as known in the art, the priority of HARQ-ACK may also be indicated in the downlink control information. Therefore, the priority of the aperiodic CSI configured through RRC signaling may be the same as or different from the priority of the HARQ-ACK indicated through the downlink control information.
For example, the priority of the aperiodic CSI is configured to be high priority through RRC signaling, and the priority of the HARQ-ACK is indicated to be low priority in the downlink control information.
In scheme 1) to scheme 2), the priority for configuring the aperiodic CSI is different from the priority for HARQ-ACK, considering that PUCCH resources used by the aperiodic CSI may be different from PUCCH resources used by HARQ-ACK, and thus, PUCCH resources used by the aperiodic CSI may be configured to have different priorities from PUCCH resources used by HARQ-ACK.
Therefore, by configuring the priority corresponding to the aperiodic CSI and issuing the priority of the aperiodic CSI to the user equipment, the user equipment can acquire the priority of the aperiodic CSI, and the user equipment can report the aperiodic CSI on the PUCCH resource of the corresponding priority. By the scheme, the base station can quickly acquire the aperiodic CSI reported by the PUCCH with high priority, so that the timeliness and the accuracy of base station scheduling are improved.
The user equipment can report the aperiodic CSI after acquiring the priority of the aperiodic CSI and completing the corresponding measurement. In a specific implementation, the ue may perform a corresponding measurement operation according to the CSI report related configuration information in the received downlink control information. The specific measurement parameters and the specific measurement process may refer to the existing protocol, and the details are not repeated in the embodiments of the present invention.
Referring to fig. 2, a method for reporting aperiodic CSI in the embodiment of the present invention is provided, and corresponding description is performed through specific steps below.
In step S201, first downlink control information is received.
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 can include one or M aperiodic CSI trigger states, wherein M is larger than or equal to 2. One aperiodic CSI trigger state may include one or N Rep The time slot interval of the jth aperiodic CSI report is Y j . The CSI reporting related configuration information may include related reference signalsAnd (6) configuring.
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.
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 in N When 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 2 N When-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.
In specific implementation, after the base station configures the aperiodic CSI trigger state table and indicates to the user equipment that the aperiodic CSI trigger state is triggered, the base station may issue the first DCI to the user equipment. 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 the sub-time slots used by the aperiodic CSI and reporting PUCCH resources used by the aperiodic CSI.
Step S202, measuring CSI reporting related reference signal configuration.
In a particular implementation, one or more aperiodic CSI trigger states are indicated to a user equipment by a base station. The measured CSI reporting related reference signal configuration is carried by CSI reporting related configuration information corresponding to the aperiodic CSI trigger state. The specific working process of measuring the CSI reporting related reference signal configuration may refer to the existing protocol, and is not described in detail in the embodiments of the present invention.
Step S203, determining a resource for reporting the aperiodic CSI, and reporting the aperiodic CSI on the resource for reporting the aperiodic CSI.
In a specific implementation, for the first downlink control information, the indicated content may include the following four application scenarios: 1) The first downlink control information may be only used for triggering aperiodic CSI reporting; 2) The first downlink control information indicates that the aperiodic CSI and the HARQ-ACK share PUCCH resources; 3) The first downlink control information indicates that the aperiodic CSI and the HARQ-ACK use different PUCCH resources in the same time slot; 4) The first downlink control information indicates that the aperiodic CSI and the HARQ-ACK are in different slots and use different PUCCH resources.
In the embodiment of the present invention, for the application scenarios 1), 2), 3), and 4), when determining the resource for reporting the aperiodic CSI, the following formula may be first adopted to determine the sub-slot offset:
Figure BDA0002446473190000111
wherein, K 2 For reporting the sub-slot identifier, Y, of the aperiodic CSI j Sub-slot interval for jth aperiodic CSI reporting, j =0, \8230;, N Rep -1，N Rep The number of aperiodic CSI reports.
After the sub-slot offset is determined, acquiring an uplink sub-slot corresponding to the PDCCH end time corresponding to the first downlink control information, summing the uplink sub-slot corresponding to the PDCCH end time and the sub-slot offset, and taking the obtained sum value as the sub-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 and HARQ-ACK are different, or the first downlink control information indicates that aperiodic CSI and HARQ-ACK use different PUCCH resources in different slots, the following method 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 specific implementation, when the first downlink control information indicates that the aperiodic CSI and the HARQ-ACK share the PUCCH resource, if the second downlink control information indicating a new PUCCH resource is received and the second downlink control information does not indicate a resource for reporting the aperiodic CSI, the PUCCH resources for reporting the aperiodic CSI and the HARQ-ACK are both the new PUCCH resource indicated by the second downlink control information.
Referring to fig. 3, 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. Fig. 3 corresponds to application scenario 1) described above.
In fig. 3, the sub-slots for reporting the aperiodic CSI are respectively given when the sub-slot offset is 1 and the sub-slot offset is 2. Slot n includes sub-slot 2n and slot 2n +1, slot n +1 includes sub-slot 2n +2 and slot 2n +3; slot n +2 includes sub-slot 2n +4 and slot 2n +5; slot n +3 includes sub-slots slot 2n +6 and slot 2n +7.
The ending sub-slot of the PDCCH is slot 2n, and the sub-slot offset (offset) is 1, then the corresponding sub-slot for reporting the aperiodic CSI is slot 2n +1.
And when the ending sub-slot of the PDCCH is slot 2n +2 and the sub-slot offset is 2, the corresponding sub-slot for reporting the aperiodic CSI is slot 2n +4.
And the ending sub-slot of the PDCCH is slot 2n +3, and if the sub-slot is set to be offset, the corresponding sub-slot for reporting the aperiodic CSI is slot 2n +5.
Referring to fig. 4, a schematic diagram of another PDCCH and PUCCH corresponding to a slot in an embodiment of the present invention is shown, and fig. 4 corresponds to the foregoing application scenario 2). In fig. 4, the PDSCH AN includes PDSCH HARQ-ACK and PDSCH HARQ-NACK.
In slot n, the PDCCH ending sub-slot is slot 2n, PDSCH DCI indicates that aperiodic CSI and HARQ-ACK share PUCCH resources, and the sub-slot offset is 5; at slot n +1, the PDCCH ends the sub-slot of slot 2n +3, and the sub-slot is biased to 2; and correspondingly reporting the sub-slot of the aperiodic CSI as slot 2n +5, and reporting the HARQ-ACK at the same time of the sub-slot of 2n +5.
Referring to fig. 5, the following sub-scenarios are described for the application scenario 3) described above: and the user equipment receives second downlink control information, and the second downlink control information indicates that the new PUCCH resources do not contain the resources reported by the aperiodic CSI.
In fig. 5, in slot n, the PDCCH ending sub-slot is slot 2n, and the sub-slot offset is 5; in slot n +1, the PDCCH end sub-slot is slot 2n +3, and the sub-slot bias of the second downlink control information (PDSCH AN) is 2; the corresponding sub-slot for reporting the aperiodic CSI and the sub-slot for reporting the HARQ-ACK are slot 2n +5, and the PUCCH resource corresponding to the aperiodic CSI is different from the PUCCH resource corresponding to the HARQ-ACK.
Referring to fig. 6, for the application scenario 4 described above). In slot n, the PDCCH ending sub-slot is slot 2n, and the sub-slot offset is 4; at slot n +1, the PDCCH ends the sub-slot of slot 2n +3, and the sub-slot is biased to 2; the corresponding sub-slot for reporting the aperiodic CSI is slot 2n +4, and the sub-slot for reporting the HARQ-ACK is slot 2n +5.
Therefore, 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 by 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 accuracy of base station scheduling can be improved. When the aperiodic CSI is reported, the reporting based on the sub-time slot is adopted, so that the base station can acquire the aperiodic CSI more quickly, and the scheduling accuracy of the base station is further improved.
Referring to fig. 7, an apparatus 70 for indicating aperiodic CSI priority in this embodiment of the present invention is provided, including: a configuration unit 701 and a transmission unit 702, wherein:
a configuration unit 701, configured to configure a priority corresponding to aperiodic CSI, where the priority corresponding to the aperiodic CSI is suitable for indicating that the aperiodic CSI corresponds to a high-priority PUCCH resource or a low-priority PUCCH resource;
a sending unit 702, configured to send the priority of the aperiodic CSI to the ue.
In a specific implementation, the configuration unit 701 may be configured to configure a priority indication of an aperiodic CSI report.
In a specific implementation, the configuration unit 701 may be configured to configure the priority indication of the aperiodic CSI trigger state, where the priorities of all aperiodic CSI reports corresponding to each aperiodic CSI trigger state are the same.
In a specific implementation, when the priority corresponding to the aperiodic CSI report is a high priority, the aperiodic CSI report may use PUCCH resources in a high priority PUCCH configuration; when the priority corresponding to the aperiodic CSI report is a low priority, the aperiodic CSI report can use PUCCH resources in a low priority PUCCH configuration.
In a specific implementation, the sending unit 702 may be configured to issue the priority of the aperiodic CSI to the ue by using RRC signaling.
In a specific implementation, the configuration unit 701 may be configured to configure that a priority corresponding to the aperiodic CSI is the same as a priority indicated by downlink control information that triggers the ue to report the aperiodic CSI.
Referring to fig. 8, an embodiment of the present invention further provides an aperiodic CSI reporting apparatus 80, including: a receiving unit 801, a measuring unit 802, a determining unit 803, and a reporting unit 804, wherein:
a receiving unit 801 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 sub-slots for reporting the aperiodic CSI and PUCCH resources for reporting the aperiodic CSI;
a measurement unit 802, configured to measure CSI reporting relevant reference signal configuration;
a determining unit 803, configured to determine a resource for reporting the aperiodic CSI;
a reporting unit 804, configured to report the aperiodic CSI on the aperiodic CSI 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 and HARQ-ACK share PUCCH resources, or the first downlink control information indicates that aperiodic CSI and HARQ-ACK use different PUCCH resources in different sub-slots, the determining unit 803 is configured to determine sub-slot offset by using the following formula:
Figure BDA0002446473190000141
wherein, K 2 For reporting the sub-slot identifier, Y, of the aperiodic CSI j J =0, \8230; N is the sub-slot interval for the jth aperiodic CSI report Rep -1，N Rep The number of the aperiodic CSI reports; and adding an uplink sub-time slot corresponding to the PDCCH end time corresponding to the first downlink control information and the sub-time slot in an offset manner to obtain a sum value serving as the sub-time slot for reporting the aperiodic CSI.
In a specific implementation, the first downlink control information indicates that aperiodic CSI is different from PUCCH resources corresponding to HARQ-ACK, and if second downlink control information is received and the second downlink control information does not indicate a resource for reporting the aperiodic CSI, the determining unit 803 may be configured to determine that the PUCCH resource for reporting the aperiodic CSI 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 second downlink control information.
In a specific implementation, the determining unit 803 may be configured to determine, 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 and HARQ-ACK are different, or the first downlink control information indicates that aperiodic CSI and HARQ-ACK use different PUCCH resources in different slots, a UCI bit interval according to the number of UCI bits when the PUCCH resources reporting 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.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the method for indicating aperiodic CSI priority 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 an apparatus for indicating aperiodic CSI priority, which includes a memory and a processor, where the memory stores a computer program operable on the processor, and the processor executes the steps of the method for indicating aperiodic CSI priority provided in any of the above embodiments when executing 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 (9)

1. A method of indicating aperiodic CSI priority, comprising:
configuring a priority corresponding to aperiodic CSI, wherein the priority corresponding to the aperiodic CSI is suitable for indicating that the aperiodic CSI corresponds to a high-priority PUCCH resource or a low-priority PUCCH resource;
and issuing the priority of the aperiodic CSI to user equipment.
2. The method for indicating aperiodic CSI priority as claimed in claim 1, wherein said configuring the corresponding priority of aperiodic CSI comprises:
configuring a priority indication for aperiodic CSI reporting.
3. The method for indicating aperiodic CSI priority as claimed in claim 1, wherein said configuring the priority corresponding to aperiodic CSI comprises:
and configuring priority indication of the aperiodic CSI trigger states, wherein the priorities of all aperiodic CSI reports corresponding to each aperiodic CSI trigger state are the same.
4. The method of indicating aperiodic CSI priority as recited in claim 2 or 3, wherein the aperiodic CSI report uses PUCCH resources within a high priority PUCCH configuration when the aperiodic CSI report corresponds to a high priority; and when the priority corresponding to the aperiodic CSI report is low priority, the aperiodic CSI report uses PUCCH resources in low-priority PUCCH configuration.
5. The method for indicating aperiodic CSI priority as claimed in claim 4, wherein the issuing the aperiodic CSI priority to the UE comprises:
and sending the priority of the aperiodic CSI to the user equipment by adopting RRC signaling.
6. The method for indicating aperiodic CSI priority as claimed in claim 1, wherein said configuring the priority corresponding to aperiodic CSI comprises:
and configuring the priority corresponding to the aperiodic CSI to be the same as the priority of a downlink control information indication triggering the user equipment to carry out aperiodic CSI reporting.
7. An apparatus for indicating aperiodic CSI priority, comprising:
the configuration unit is used for configuring the priority corresponding to the aperiodic CSI, and the priority corresponding to the aperiodic CSI is suitable for indicating that the aperiodic CSI corresponds to a high-priority PUCCH resource or a low-priority PUCCH resource;
and the sending unit is used for sending the priority of the aperiodic CSI to the user equipment.
8. A computer-readable storage medium, having a computer program stored thereon, which, when being executed by a processor, performs the steps of the method of indicating aperiodic CSI priority as claimed in any of claims 1-6.
9. An apparatus for a method of indicating aperiodic CSI priority, comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of indicating aperiodic CSI priority as recited in any of claims 1-6.
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CN103918334A (en) * 2011-11-08 2014-07-09 高通股份有限公司 User equipment, base stations, and methods allowing for handling of colliding channel state information reports
CN103580818A (en) * 2012-07-31 2014-02-12 中兴通讯股份有限公司 Feedback method, base station and terminal for channel state information
CN109152007A (en) * 2017-06-15 2019-01-04 华为技术有限公司 A kind of control information sending, receiving method and device
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