CN111130688B - Method and device for reporting channel state information and computer storage medium - Google Patents

Method and device for reporting channel state information and computer storage medium Download PDF

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Publication number
CN111130688B
CN111130688B CN201811298035.2A CN201811298035A CN111130688B CN 111130688 B CN111130688 B CN 111130688B CN 201811298035 A CN201811298035 A CN 201811298035A CN 111130688 B CN111130688 B CN 111130688B
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csi
reference signal
domain resource
frequency
frequency domain
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CN111130688A (en
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陈曦
张鹏
花梦
焦淑蓉
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • 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
    • 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
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a method and a device for reporting channel state information and a computer storage medium, wherein the method can use a first reference signal and a second reference signal to measure and report CSI, and can provide richer channel quality information for network equipment so that the network equipment can determine better frequency domain resources from the CSI for data transmission, and the data transmission efficiency is effectively improved.

Description

Method and device for reporting channel state information and computer storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for reporting channel state information, and a computer storage medium.
Background
Ultra-high reliable ultra-short delay communication (URLLC) requires that a network has the ability to transmit data from a transmitting end to a receiving end via electromagnetic waves via a wireless air interface medium within a prescribed ultra-short time period and according to prescribed ultra-high reliability. The terminal device may perform channel quality measurement using reference signals such as a channel state information-reference signal (CSI-RS), a physical downlink control channel-deModulation reference signal (PDCCH-DMRS), or a physical downlink shared channel-deModulation reference signal (PDSCH-DMRS), to obtain CSI, and send the CSI to the network device, so that the network device may perform resource scheduling according to the CSI, thereby improving data transmission efficiency. The reported CSI determines the data transmission efficiency, so how to determine the reported CSI is a technical problem that needs to be solved urgently at present.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present application is to provide a method, an apparatus, and a computer storage medium for reporting channel state information, which can report CSI of at least two reference signals, so that a network device can determine a better frequency domain resource from the CSI for data transmission.
In a first aspect, an embodiment of the present application provides a method for reporting CSI, including: the method comprises the steps that terminal equipment obtains a CSI reporting mode, wherein the CSI reporting mode comprises the steps of measuring and reporting the CSI by using a first reference signal and a second reference signal, the types of the first reference signal and the second reference signal are different, and the first reference signal is a demodulation reference signal. Then, the terminal device sends a third CSI and a fourth CSI to the network device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fourth CSI is measured according to a reference signal transmitted on a second frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the second frequency-domain resource is a frequency-domain resource in a partial Bandwidth (BWP) except the first frequency-domain resource, and the BWP is one or more activated frequency-domain resource sets configured by the network device for data transmission with the terminal device. Based on this, the network device may receive the third CSI and the fourth CSI from the terminal device and transmit data to the terminal device according to the third CSI and the fourth CSI.
In the technical scheme, the channel estimation results of various reference signals are reported to the network equipment, so that more channel quality information is provided for the network equipment, and the network equipment can perform efficient data transmission on resources with better channel quality.
In a second aspect, an embodiment of the present application provides a method for reporting CSI, including: the method comprises the steps that terminal equipment obtains a CSI reporting mode, wherein the CSI reporting mode comprises the steps of measuring and reporting the CSI by using a first reference signal and a second reference signal, the types of the first reference signal and the second reference signal are different, and the first reference signal is a demodulation reference signal. Then, the terminal device sends the third CSI, the fifth CSI, and the sixth CSI to the network device, where the third CSI is measured according to a reference signal transmitted on the first frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on the third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on the fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the third frequency-domain resource is a frequency-domain resource whose frequency is smaller than that of the first frequency-domain resource in the BWP, the fourth frequency-domain resource is a frequency-domain resource whose frequency is greater than that of the first frequency-domain resource in the BWP, and the BWP is one or more activated frequency-domain resource sets configured by the network device for data transmission with the terminal device. Based on this, the network device receives the third CSI, the fifth CSI and the sixth CSI from the terminal device, and transmits data to the terminal device according to the third CSI, the fifth CSI and the sixth CSI.
With reference to the implementation manner of the first aspect or the second aspect, in an implementation manner, the third CSI is measured according to a reference signal transmitted on the first frequency-domain resource, and specifically includes: the third CSI is measured from the first reference signal on the condition that only the first reference signal is transmitted on the first frequency-domain resource.
With reference to the implementation manner of the first aspect or the second aspect, in an implementation manner, under a condition that the first reference signal and the second reference signal are transmitted on the first frequency-domain resource, the third CSI is target CSI determined according to seventh CSI measured according to the first reference signal transmitted on the first frequency-domain resource and eighth CSI measured according to the second reference signal transmitted on the first frequency-domain resource.
With reference to the implementation manner of the first aspect or the second aspect, in an implementation manner, the third CSI is a target CSI determined according to the seventh CSI and the eighth CSI, and specifically includes: and taking the CSI with a larger CQI value in a third Channel Quality Indicator (CQI) and a fourth CQI as the target CSI, wherein the third CQI is the CQI in the seventh CSI, and the fourth CQI is the CQI in the eighth CSI.
With reference to the implementation manner of the first aspect or the second aspect, in an implementation manner, the third CSI is a target CSI determined according to the seventh CSI and the eighth CSI, and specifically includes: and taking the CSI with a larger transmission bandwidth in a third transmission bandwidth and a fourth transmission bandwidth as the target CSI, wherein the third transmission bandwidth is the transmission bandwidth of the first reference signal, and the second transmission bandwidth is the transmission bandwidth of the second reference signal.
With reference to the implementation manner of the first aspect or the second aspect, in an implementation manner, the third CSI is measured according to a reference signal transmitted on the first frequency-domain resource, and specifically includes: under the condition that only a first reference signal is transmitted on a first frequency domain resource, third CSI is target CSI determined according to L CSI, wherein the S-th CSI is measured according to the first reference signal transmitted on an S-th group of sub-resources, the S-th group of sub-resources is one of L groups of sub-resources used for transmitting the first reference signal, L is determined according to the number of frequency domain resources corresponding to the first reference signal, the L groups of sub-resources are determined according to the mapping type from the first reference signal to the frequency domain resources, the mapping type comprises continuous mapping and discontinuous mapping, S and L are positive integers, and S is greater than or equal to 1 and less than or equal to L; or, under the condition that the first reference signal and the second reference signal are transmitted on the first frequency domain resource, the third CSI is a target CSI determined according to L CSIs, where the S-th CSI is measured according to a target reference signal transmitted on an S-th group of sub-resources, the S-th group of sub-resources is one of L groups of sub-resources used for transmitting the target reference signal, L is determined according to the number of frequency domain resources corresponding to the target reference signal, the L groups of sub-resources are determined according to a mapping type from the target reference signal to a frequency domain resource, the mapping type includes continuous mapping and discontinuous mapping, S and L are positive integers, and S is greater than or equal to 1 and less than or equal to L.
In a third aspect, an embodiment of the present application provides a method for reporting CSI, including: the method comprises the steps that terminal equipment obtains a CSI reporting mode, wherein the CSI reporting mode comprises the steps of measuring and reporting CSI by using a first reference signal and a second reference signal, the types of the first reference signal and the second reference signal are different, and the first reference signal is a demodulation reference signal. Then, the terminal device sends fifth CSI, sixth CSI, eleventh CSI, twelfth CSI, and thirteenth CSI to the network device, where the eleventh CSI is measured according to a reference signal transmitted on a first sub-resource in a first frequency-domain resource, the twelfth CSI is measured according to a reference signal transmitted on a second sub-resource in the first frequency-domain resource, the thirteenth CSI is measured according to a reference signal transmitted on a fifth frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the first sub-resource and the second sub-resource are parts of the first frequency-domain resource, and the first sub-resource and the second sub-resource are discontinuous from the first reference signal to the frequency-domain resource The mapping type is determined, the first sub-resource is a frequency domain resource with a frequency smaller than the second sub-resource, the fifth frequency domain resource is a frequency domain resource with a frequency greater than the first sub-resource and smaller than the second sub-resource, the third frequency domain resource is a frequency domain resource with a frequency smaller than the first sub-resource in BWP, and the fourth frequency domain resource is a frequency domain resource with a frequency greater than the second sub-resource in BWP. Based on this, the network device receives the fifth CSI, the sixth CSI, the eleventh CSI, the twelfth CSI and the thirteenth CSI from the terminal device, and transmits data to the terminal device according to the fifth CSI, the sixth CSI, the eleventh CSI, the twelfth CSI and the thirteenth CSI.
In a fourth aspect, an embodiment of the present application provides a method for reporting CSI, including: the method comprises the steps that terminal equipment obtains a CSI reporting mode, wherein the CSI reporting mode comprises the steps of measuring and reporting CSI by using a first reference signal and a second reference signal, and the types of the first reference signal and the second reference signal are different. Then, the terminal device sends a first CSI and a second CSI to the network device, wherein the first CSI is measured according to the first reference signal, and the second CSI is measured according to the second reference signal. Based on the CSI, the network equipment receives the first CSI and the second CSI from the terminal equipment and sends data to the terminal equipment according to the first CSI and the second CSI.
In one implementation, a terminal device transmits first CSI and second CSI carried on an uplink channel to the network device, where an order in which the first CSI and the second CSI are carried on the uplink channel is related to types of the first reference signal and the second reference signal.
In an implementation manner, a terminal device receives configuration information from the network device, where the configuration information is carried in Radio Resource Control (RRC) signaling or physical layer signaling, and the configuration information includes a reporting manner of the CSI.
In a fifth aspect, an embodiment of the present application provides a method for reporting CSI, including: the method comprises the steps that terminal equipment obtains a CSI reporting mode, wherein the CSI reporting mode comprises the steps of measuring and reporting CSI by using a first reference signal and a second reference signal, and the types of the first reference signal and the second reference signal are different. Then, the terminal device sends the target CSI to the network device, wherein the target CSI is determined according to a first CSI measured according to the first reference signal and a second CSI measured according to the second reference signal. Based on the method, the network equipment receives the target CSI from the terminal equipment and sends data to the terminal equipment according to the target CSI.
In one implementation, the target CSI is determined according to the first CSI and the second CSI, and specifically includes: and the terminal equipment takes the CSI with a larger CQI value in a first CQI and a second CQI as the target CSI, wherein the first CQI is the CQI in the first CSI, and the second CQI is the CQI in the second CSI.
In one implementation, the target CSI is determined according to the first CSI and the second CSI, and specifically includes: and the terminal device takes the CSI with a larger transmission bandwidth of a first transmission bandwidth and a second transmission bandwidth as the target CSI, wherein the first transmission bandwidth is the transmission bandwidth of the first reference signal, and the second transmission bandwidth is the transmission bandwidth of the second reference signal.
In a sixth aspect, an embodiment of the present application provides a method for reporting CSI, including: the method comprises the steps that terminal equipment obtains a CSI reporting mode, wherein the CSI reporting mode comprises the step of using a first reference signal to carry out CSI reporting. Then, the terminal device sends L CSIs to the network device, where the S-th CSI is measured according to a first reference signal transmitted on an S-th group of sub-resources, the S-th group of sub-resources is one of L groups of sub-resources used for transmitting the first reference signal, L is determined according to a total number of frequency domain resources used for transmitting the first reference signal, the L groups of sub-resources are determined according to a mapping type from the first reference signal to the frequency domain resources, the mapping type includes continuous mapping and discontinuous mapping, S and L are positive integers, and S is greater than or equal to 1 and less than or equal to L. Based on the L CSI, the network equipment receives the L CSI from the terminal equipment and sends data to the terminal equipment according to the L CSI.
In a seventh aspect, an embodiment of the present application provides a method for reporting CSI, including: the method comprises the steps that terminal equipment obtains a CSI reporting mode, wherein the CSI reporting mode comprises the step of using a first reference signal to carry out CSI reporting. Then, the terminal device sends the target CSI to the network device, where the target CSI is determined according to L CSIs, the S-th CSI is measured according to a first reference signal transmitted on an S-th group of sub-resources, the S-th group of sub-resources is one of L groups of sub-resources used for transmitting the first reference signal, L is determined according to the number of frequency domain resources corresponding to the first reference signal, the L groups of sub-resources are determined according to a mapping type from the first reference signal to the frequency domain resources, the mapping type includes continuous mapping and discontinuous mapping, S and L are positive integers, and S is greater than or equal to 1 and less than or equal to L. Based on the method, the network equipment receives the target CSI from the terminal equipment and sends data to the terminal equipment according to the target CSI.
With reference to the implementation manner of the sixth aspect or the seventh aspect, in an implementation manner, the L groups of sub-resources are determined according to a mapping type of the first reference signal to frequency domain resources, and on a condition that the mapping type is a continuous mapping: the number of the frequency domain resources on the K-th group of sub-resources is floor (N/L), the number of the frequency domain resources on the L-th group of sub-resources for transmitting the first reference signal is N- (L-1) × floor (N/L), wherein N is the sum of the number of the frequency domain resources for transmitting the first reference signal, K and N are positive integers, and K is more than or equal to 1 and less than or equal to L-1.
With reference to the implementation manner of the sixth aspect or the seventh aspect, in an implementation manner, the L groups of sub-resources are determined according to a mapping type of the first reference signal to frequency domain resources, and on a condition that the mapping type is a non-contiguous mapping: the number of frequency domain resources on the K-th group of sub-resources is floor (N/L), the number of frequency domain resources on the L-th group of sub-resources for transmitting the first reference signal is N- (L-1) floor (N/L), wherein N is the sum of the number of frequency domain resources for transmitting the first reference signal, K and N are positive integers, and K is more than or equal to 1 and less than or equal to L-1; or, the number of frequency domain resources on the kth group of sub-resources is floor (M/L), the number of frequency domain resources on the lth group of sub-resources is M- (L-1) × floor (M/L), where M is the sum of the numbers of target frequency domain resources, the target frequency domain resources are frequency domain resources whose frequencies are greater than or equal to a first boundary and less than or equal to a second boundary, the first boundary is the position of the frequency domain resource whose frequency for transmitting the first reference signal is the minimum, the second boundary is the position of the frequency domain resource whose frequency for transmitting the first reference signal is the maximum, M and K are positive integers, and K is greater than or equal to 1 and less than or equal to L-1.
In one implementation, the target CSI is determined according to L pieces of CSI, and specifically includes: and taking the CSI with a larger CQI value in the L CQIs as the target CSI, wherein the S-th CQI is the CQI in the S-th CSI.
In one implementation, the terminal device may further indicate, to the network device, a type of a reference signal corresponding to the target CSI. The network device may determine a type of reference signal corresponding to the target CSI.
In an implementation manner, the indicating, by a terminal device, a type of a reference signal corresponding to the target CSI to the network device specifically includes: and the terminal equipment sends indication information to the network equipment, wherein the indication information is used for indicating the type of the reference signal corresponding to the target CSI. Based on this, the network device receives the indication information from the terminal device.
In one implementation, the indicating, by a terminal device, a type of a reference signal corresponding to the target CSI to the network device includes: and sending the target CSI to the network equipment on a third transmission resource, wherein the third transmission resource is determined according to a mapping relation between the type of the reference signal and the uplink transmission resource. Based thereon, the network device receives the target CSI from the terminal device on a third transmission resource.
In an eighth aspect, an embodiment of the present application provides a communication apparatus, where the apparatus includes means for implementing the CSI reporting method in the first aspect to the seventh aspect.
In a ninth aspect, the present application provides a computer storage medium, which is characterized in that the computer storage medium stores a computer program or instructions, and when the program or instructions are executed by a processor, the processor is caused to execute the method according to the first aspect to the seventh aspect.
In a tenth aspect, an embodiment of the present application provides a communication apparatus, including a processor, coupled with a memory,
the memory to store instructions;
the processor is configured to execute the instructions in the memory to cause the communication device to perform the method according to the first to seventh aspects.
In an eleventh aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and an interface circuit, where the interface circuit is coupled to the processor,
the processor is configured to execute a computer program or instructions to implement the method according to the first to seventh aspects;
the interface circuit is used for communicating with other modules outside the chip system.
Drawings
Fig. 1 is a schematic flowchart of a CSI reporting method disclosed in an embodiment of the present application;
fig. 2 is a schematic flowchart of another CSI reporting method disclosed in the embodiment of the present application;
fig. 3 is a schematic structural diagram of a frequency domain resource disclosed in an embodiment of the present application;
fig. 4 is a schematic flowchart of another CSI reporting method disclosed in the embodiment of the present application;
fig. 5 is a schematic flowchart of another CSI reporting method disclosed in the embodiment of the present application;
fig. 6 is a schematic structural diagram of another frequency domain resource disclosed in an embodiment of the present application;
fig. 7 is a schematic flowchart of another CSI reporting method disclosed in the embodiment of the present application;
fig. 8 is a schematic flowchart of another CSI reporting method disclosed in the embodiment of the present application;
fig. 9 is a schematic structural diagram of another frequency domain resource disclosed in an embodiment of the present application;
fig. 10 is a schematic structural diagram of another frequency domain resource disclosed in an embodiment of the present application;
fig. 11 is a schematic structural diagram of another frequency domain resource disclosed in an embodiment of the present application;
fig. 12 is a schematic structural diagram of another frequency domain resource disclosed in an embodiment of the present application;
fig. 13 is a schematic structural diagram of another frequency domain resource disclosed in an embodiment of the present application;
fig. 14 is a schematic flowchart of another CSI reporting method disclosed in the embodiment of the present application;
fig. 15 is a schematic flowchart of another CSI reporting method disclosed in the embodiment of the present application;
fig. 16 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application;
fig. 17 is a schematic structural diagram of another communication device disclosed in the embodiments of the present application;
fig. 18 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application.
Detailed Description
The embodiment of the application can be applied to a wireless communication system which can be a fifth generation (5)thgeneration, 5G) New Radio (NR) system in the mobile communication system, or a new wireless communication system in the future, which is not limited in this application.
In the embodiments of the present application, the present invention relates to a network device and a terminal device. The network device is an access device that the terminal device accesses to the mobile communication system in a wireless manner, and may be a base station NodeB, an evolved NodeB (eNodeB), a Transmission Reception Point (TRP), a next generation base station (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.
The Terminal device may also be referred to as a Terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.
In order to better understand the method, the apparatus, and the computer storage medium for reporting channel state information disclosed in the embodiments of the present application, first, a method for reporting channel state information implemented in the present application is described below. Fig. 1 is a flowchart illustrating a method for reporting channel state information according to an embodiment of the present application, where an execution main body of the method may be a terminal device or a chip applied to the terminal device. The following description will be given taking as an example that the execution main body is a terminal device. The method includes, but is not limited to, the steps of:
step S101: and the terminal equipment acquires the CSI reporting mode. The reporting mode of the CSI may include one or more of the following three types:
firstly, all reference signals transmitted on BWP are used for measuring and reporting CSI. The reference signal may include a CSI-RS, a PDSCH-DMRS, a PDCCH-DMRS, or a future evolved reference signal, etc. Wherein the BWP may be one or more activated sets of frequency domain resources configured for the network device for data transmission with the terminal device. Illustratively, all reference signals transmitted on BWP include CSI-RS, PDSCH-DMRS, and PDCCH-DMRS, and the CSI reporting mode may be: and measuring and reporting the CSI by using the CSI-RS, the PDSCH-DMRS and the PDCCH-DMRS.
And secondly, measuring and reporting the CSI by using a part of reference signals transmitted on the BWP, wherein the part of reference signals refer to at least two kinds of reference signals. Exemplarily, the reference signal transmitted on BWP includes CSI-RS, PDSCH-DMRS, and PDCCH-DMRS, and the CSI reporting mode may be: and measuring and reporting the CSI by using the CSI-RS and the PDSCH-DMRS, or measuring and reporting the CSI by using the CSI-RS and the PDCCH-DMRS, or measuring and reporting the CSI by using the PDCCH-DMRS and the PDSCH-DMRS.
And thirdly, measuring and reporting the CSI by using a reference signal transmitted on the BWP. Exemplarily, the reference signal transmitted on BWP includes CSI-RS, PDSCH-DMRS, and PDCCH-DMRS, and the CSI reporting mode may be: and measuring and reporting the CSI by using the CSI-RS, or measuring and reporting the CSI by using the PDCCH-DMRS, or measuring and reporting the CSI by using the PDSCH-DMRS.
In an implementation manner, the terminal device may obtain the reporting manner of the CSI through the following two manners:
firstly, the reporting mode of the CSI is predefined by a protocol.
And secondly, the terminal equipment receives configuration information from the network equipment, the configuration information is transmitted by the network equipment through high-level signaling or dynamic signaling, and the configuration information comprises a CSI reporting mode. Wherein the higher layer signaling may be semi-static signaling, such as RRC signaling. The dynamic signaling may be physical layer signaling. Illustratively, the configuration information may be sent by the network device to the terminal device by means of unicast, multicast or broadcast.
In an implementation manner, if the reporting mode of the CSI is that the network device sends the CSI to the terminal device, and the reporting mode of the CSI is that a reference signal or a partial reference signal transmitted on BWP is used to measure and report the CSI, the network device may indicate the type of the reference signal or the partial reference signal to the terminal device. For example, the network equipment indicates the terminal equipment to use the PDSCH-DMRS for CSI measurement and reporting. And for another example, the network equipment indicates the terminal equipment to use the CSI-RS and the PDSCH-DMRS for CSI measurement and reporting.
Step S102: and the terminal equipment selects the reference signal to measure and report the channel state information according to the reporting mode of the CSI.
After the terminal device obtains the reporting mode of the CSI, the terminal device may select a reference signal that needs to be reported with the CSI according to the reporting mode of the CSI. For example, if the reporting mode of the CSI is: the CSI measurement and reporting are performed by using all reference signals transmitted on the BWP, and the reference signals selected by the terminal device and required to be subjected to CSI reporting may be all reference signals transmitted on the BWP. For another example, if the reporting mode of the CSI is: the terminal device may select a reference signal that needs to be subjected to CSI reporting based on an indication of the network device, by using a part of reference signals transmitted on the BWP for CSI measurement and reporting, or by using one of the reference signals transmitted on the BWP for CSI measurement and reporting. For example, if the network device indicates to use the PDSCH-DMRS for CSI measurement and reporting, the reference signal selected by the terminal device and required to perform CSI reporting may be the PDSCH-DMRS.
In a first implementation manner, if the reference signals selected by the terminal device are the first reference signal and the second reference signal, the terminal device may obtain the first CSI according to the measurement of the first reference signal, obtain the second CSI according to the measurement of the second reference signal, and send the first CSI and the second CSI to the network device.
In a second implementation manner, if the reference signals selected by the terminal device are the first reference signal and the second reference signal, the terminal device may obtain the first CSI according to the measurement of the first reference signal and obtain the second CSI according to the measurement of the second reference signal, the terminal device determines the target CSI according to the first CSI and the second CSI, and the terminal device sends the target CSI to the network device. The number of the target CSI can be one or more, and the channel quality measurement result indicated by the target CSI is better than the channel quality measurement result indicated by other CSI in the first CSI and the second CSI, or the channel quality measurement result indicated by the target CSI is worse than the channel quality measurement result indicated by other CSI. For example, the target CSI may be CSI with a larger CQI among the first CSI and the second CSI. For another example, CSI with a larger transmission bandwidth is transmitted in the transmission bandwidth of the first reference signal and the transmission bandwidth of the second reference signal.
Wherein, the specific description about the first CSI and the second CSI may refer to the description of fig. 2, and the specific description about the target CSI may refer to the description of fig. 4.
In a third implementation manner, if the reference signals selected by the terminal device are the first reference signal and the second reference signal, the terminal device may obtain the third CSI according to the reference signal transmitted on the first frequency domain resource, obtain the fourth CSI according to the reference signal transmitted on the second frequency domain resource, and send the third CSI and the fourth CSI to the network device.
In a fourth implementation manner, if the reference signals selected by the terminal device are the first reference signal and the second reference signal, the terminal device may obtain a third CSI according to the reference signal transmitted on the first frequency domain resource, obtain a fourth CSI according to the reference signal transmitted on the second frequency domain resource, determine a target CSI according to the third CSI and the fourth CSI, and send the target CSI to the network device.
In the third and fourth implementation manners, the first frequency domain resource is a frequency domain resource corresponding to the first reference signal. The second frequency-domain resource is a frequency-domain resource other than the first frequency-domain resource in the BWP. For a detailed description of the first frequency domain resources and the second frequency domain resources, reference may be made to the description of fig. 5.
In a fifth implementation manner, if the reference signals selected by the terminal device are the first reference signal and the second reference signal, the terminal device may obtain the third CSI according to the reference signal transmitted on the first frequency domain resource, obtain the fifth CSI according to the reference signal transmitted on the third frequency domain resource, obtain the sixth CSI according to the reference signal transmitted on the fourth frequency domain resource, and send the third CSI, the fifth CSI, and the sixth CSI to the network device.
In a sixth implementation manner, if the reference signals selected by the terminal device are the first reference signal and the second reference signal, the terminal device may obtain a third CSI according to the reference signal transmitted on the first frequency domain resource, obtain a fifth CSI according to the reference signal transmitted on the third frequency domain resource, obtain a sixth CSI according to the reference signal transmitted on the fourth frequency domain resource, determine a target CSI according to the third CSI, the fifth CSI, and the sixth CSI, and send the target CSI to the network device.
In a fifth implementation manner and a sixth implementation manner, the first frequency domain resource is a frequency domain resource corresponding to the first reference signal. The third frequency-domain resource is a frequency-domain resource in the BWP that is less in frequency than the first frequency-domain resource, and the fourth frequency-domain resource is a frequency-domain resource in the BWP that is greater in frequency than the first frequency-domain resource. For a detailed description of the first frequency domain resources, the third frequency domain resources and the fourth frequency domain resources, reference may be made to the description of fig. 7.
In a seventh implementation manner, if the reference signals selected by the terminal device are the first reference signal and the second reference signal, the terminal device may obtain eleventh CSI according to the reference signal transmitted on the first sub-resource in the first frequency-domain resource, obtain twelfth CSI according to the reference signal transmitted on the second sub-resource in the first frequency-domain resource, obtain thirteenth CSI according to the reference signal transmitted on the fifth frequency-domain resource, obtain fifth CSI according to the reference signal transmitted on the third frequency-domain resource, obtain sixth CSI according to the reference signal transmitted on the fourth frequency-domain resource, and send the fifth CSI, the sixth CSI, the eleventh CSI, the twelfth CSI, and the thirteenth CSI to the network device.
In an eighth implementation manner, if the reference signals selected by the terminal device are the first reference signal and the second reference signal, the terminal device may obtain eleventh CSI according to the reference signal transmitted on the first sub-resource in the first frequency-domain resource, obtain twelfth CSI according to the reference signal transmitted on the second sub-resource in the first frequency-domain resource, obtain thirteenth CSI according to the reference signal transmitted on the fifth frequency-domain resource, obtain fifth CSI according to the reference signal transmitted on the third frequency-domain resource, obtain sixth CSI according to the reference signal transmitted on the fourth frequency-domain resource, determine the target CSI according to the fifth CSI, the sixth CSI, the eleventh CSI, the twelfth CSI, and the thirteenth CSI, and send the target CSI to the network device.
In the seventh and eighth implementation manners, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the first sub-resource is a frequency-domain resource whose frequency is smaller than the second sub-resource, the fifth frequency-domain resource is a frequency-domain resource whose frequency is greater than the first sub-resource and smaller than the second sub-resource, the third frequency-domain resource is a frequency-domain resource whose frequency is smaller than the first sub-resource in BWP, and the fourth frequency-domain resource is a frequency-domain resource whose frequency is greater than the second sub-resource in BWP. For a detailed description of the first, third, fourth and fifth frequency domain resources, reference may be made to the description of fig. 7.
In a ninth implementation manner, if the reference signal selected by the terminal device is the first reference signal, the terminal device may determine L according to the number of frequency domain resources corresponding to the first reference signal, determine L groups of sub-resources according to a mapping type of the first reference signal to the frequency domain resources, obtain an S-th CSI according to measurement of the first reference signal transmitted on the S-th group of sub-resources, and send the L CSIs to the network device, where L is a positive integer, S is a positive integer, and S is greater than or equal to 1 and less than or equal to L.
In a tenth implementation manner, if the reference signal selected by the terminal device is the first reference signal, the terminal device may determine L according to the number of frequency domain resources corresponding to the first reference signal, determine L groups of sub-resources according to a mapping type of the first reference signal to the frequency domain resources, obtain an S-th CSI according to measurement of the first reference signal transmitted on the S-th group of sub-resources, determine a target CSI according to the L CSI, and send the target CSI to the network device, where L is a positive integer, S is a positive integer, and S is greater than or equal to 1 and less than or equal to L.
For a detailed description of the ninth implementation and the tenth implementation, reference may be made to the description of fig. 14.
In one implementation, since the network device may transmit different reference signals with different transmission powers, and the reference signals based on different transmission powers may generate different CQIs at the terminal device, the terminal device needs to know the transmission power difference between the different reference signals in order to compare the CQIs generated by the different reference signals. Therefore, before the terminal device determines the target CSI, the transmission power information of the reference signal corresponding to each CSI may be obtained, where the transmission power information may be absolute value information of the transmission power of the reference signal or difference information of the transmission power of two reference signals.
After receiving the CSI from the terminal device, the network device may perform data transmission according to the CSI, for example, perform data transmission using a frequency domain resource with a better CQI in the CSI.
In a conventional CSI reporting method, due to frequency selective fading, channel quality differences of different frequency domain resources are large, for example, a part of the frequency domain resources have a high sir and other parts of the frequency domain resources have a low sir. The terminal device uses a fixed reference signal to perform CSI measurement, obtains CSI and sends the CSI to the network device, so that the network device can only obtain the channel quality of the frequency domain resource transmitting the reference signal, cannot know the channel quality of other frequency domain resources, and is difficult to meet the requirements of time delay or reliability of data transmission.
In the embodiment of the application, the terminal device performs channel quality measurement and reporting according to at least two reference signals, or performs channel quality measurement and reporting according to a mapping type from a reference signal to a frequency domain resource, so that the network device performs data transmission by using the frequency domain resource with better channel quality, thereby reducing the time delay of data transmission or improving the reliability of data transmission.
Fig. 2 is a method for reporting channel state information according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:
step S201: and the terminal equipment acquires the CSI reporting mode.
The terminal equipment can obtain the CSI reporting mode. The CSI reporting method includes using at least two reference signals or all reference signals transmitted on BWP to perform CSI reporting, for example, the CSI reporting method includes using a first reference signal and a second reference signal to perform CSI reporting; for another example, the CSI reporting method includes using a first reference signal, a second reference signal, and a third reference signal to report CSI; for another example, the CSI reporting method includes reporting CSI using all reference signals transmitted on BWP. Illustratively, the reference signal may include a CSI-RS, a PDSCH-DMRS, a PDCCH-DMRS, or a future evolved reference signal, among others. The first reference signal may be one of the reference signals, the second reference signal may be one of the reference signals, the third reference signal may be one of the reference signals, and the first reference signal, the second reference signal, and the third reference signal are different types of reference signals.
It should be noted that, in the embodiment of the present application, a specific scheme of the reporting mode for obtaining CSI may refer to the relevant description in step S101, and details of the embodiment of the present application are not described again.
Step S202: the terminal equipment sends the first CSI and the second CSI to the network equipment, wherein the first CSI is measured according to the first reference signal, and the second CSI is measured according to the second reference signal.
When the CSI reporting mode includes performing CSI reporting using the first reference signal and the second reference signal, the terminal device may send the first CSI and the second CSI to the network device. Taking fig. 3 as an example, if the first reference signal is a PDSCH-DMRS and the second reference signal is a PDCCH-DMRS, where the PDSCH-DMRS is located on the 11 th to 17 th rows of the frequency domain resources, the first frequency domain resource may be a frequency domain resource included in the 11 th to 17 th rows; the PDCCH-DMRS is located in rows 16 to 21 of the frequency domain resources, and the second frequency domain resource may be a frequency domain resource included in rows 16 to 21, where the first CSI is obtained by performing channel quality measurement using the PDSCH-DMRS transmitted on the first frequency domain resource, and the second CSI is obtained by performing channel quality measurement using the PDCCH-DMRS transmitted on the second frequency domain resource.
When the CSI reporting mode includes CSI reporting using the first reference signal, the second reference signal, and the third reference signal, the terminal device may send the first CSI, the second CSI, and the third CSI to the network device. Taking fig. 3 as an example, if the first reference signal is a PDSCH-DMRS, the second reference signal is a PDCCH-DMRS, and the third reference signal is a CSI-RS, where the PDSCH-DMRS is located on the 11 th to 17 th rows of the frequency domain resources, the first frequency domain resource may be a frequency domain resource included in the 11 th to 17 th rows; the PDCCH-DMRS is located on rows 16 to 21 of the frequency domain resources, and the second frequency domain resource may be a frequency domain resource included in rows 16 to 21; the CSI-RS is located on the 2 nd row to the 7 th row of the frequency domain resources, and the third frequency domain resource may be the frequency domain resource included in the 2 nd row to the 7 th row. The first CSI is obtained by performing channel quality measurement by using a PDSCH-DMRS transmitted on the first frequency domain resource, the second CSI is obtained by performing channel quality measurement by using a PDCCH-DMRS transmitted on the second frequency domain resource, and the third CSI is obtained by performing channel quality measurement by using a CSI-RS transmitted on the third frequency domain resource.
The sequence of obtaining each CSI by the terminal device is not limited in the embodiments of the present application, and taking the first CSI and the second CSI as an example, for example, the terminal device may obtain the first CSI and the second CSI at the same time, and if the terminal device can obtain the first CSI, obtain the second CSI, and if the terminal device can obtain the second CSI, obtain the first CSI.
In one implementation, the first frequency domain resource and the second frequency domain resource are determined in the following two ways:
first, since the location of the reference signal in the frequency domain resource and the type of the reference signal transmitted on the frequency domain resource are predefined by the terminal device and the network device protocol, the terminal device knows the location of the reference signal in the frequency domain resource and the type of the reference signal transmitted on the frequency domain resource. Based thereon, the terminal device may be aware of first frequency domain resources transmitting the first reference signals and second frequency domain resources transmitting the second reference signals.
Second, the network device configures a CSI reporting manner, and further sends a first boundary and a length of the first reference signal, and a first boundary and a length of the second reference signal to the terminal device, so that the terminal device can know that the first frequency domain resource is a frequency domain resource for transmitting the first reference signal, the first frequency domain resource is greater than or equal to the first boundary of the first reference signal and less than or equal to a second boundary of the first reference signal, and the second boundary of the first reference signal is determined according to the first boundary and the length of the first reference signal, for example, the second boundary of the first reference signal is obtained by subtracting 1 from a sum of the length of the first reference signal and the first boundary of the first reference signal. Illustratively, the first boundary of the first reference signal is the 2 nd line frequency domain resource, the length of the first reference signal is 6, and the second boundary of the first reference signal is the 7 th line frequency domain resource. The terminal device may know that the second frequency domain resource is a frequency domain resource for transmitting a second reference signal, where the second frequency domain resource is greater than or equal to a first boundary of the second reference signal and less than or equal to a second boundary of the second reference signal, and the second boundary of the second reference signal is determined according to the first boundary and the length of the second reference signal.
The method for acquiring the first frequency domain resource, the second frequency domain resource and the third frequency domain resource by the terminal device is the same as the method for acquiring the first frequency domain resource and the second frequency domain resource by the terminal device, and reference may be specifically made to the description related to the method for acquiring the first frequency domain resource and the second frequency domain resource by the terminal device, which is not repeated in this embodiment of the present application.
In one implementation, the terminal device may send the first CSI and the second CSI to the network device on an uplink channel, where an order in which the first CSI and the second CSI are carried on the uplink channel is related to types of the first reference signal and the second reference signal. For example, the terminal device and the network device negotiate in advance to obtain: the CSI obtained by using the first reference signal to perform channel quality measurement is arranged at a first position in the reported CSI, the CSI obtained by using the second reference signal to perform channel quality measurement is arranged at a second position in the reported CSI, and the first position is located in front of the second position, so that the terminal device may rank the first CSI and the second CSI, wherein the first CSI in the ranked CSI is located in front of the second CSI, and then send data containing the ranked CSI to the network device. For another example, the terminal device and the network device negotiate in advance to obtain: the CSI obtained by performing channel quality measurement using the second reference signal is arranged at a first position in the reported CSI, the CSI obtained by performing channel quality measurement using the first reference signal is arranged at a second position in the reported CSI, and the first position is located in front of the second position, then the terminal device may rank the first CSI and the second CSI, where the second CSI in the ranked CSI is located in front of the first CSI, and further send data including the ranked CSI to the network device.
The method for the terminal device to bear the first CSI, the second CSI, and the third CSI on the uplink channel and send the first CSI, the second CSI, and the third CSI to the network device is the same as the method for the terminal device to bear the first CSI and the second CSI on the uplink channel and send the first CSI and the second CSI to the network device, which may specifically refer to the description about the method for the terminal device to bear the first CSI and the second CSI on the uplink channel and send the first CSI and the second CSI to the network device, and is not described in detail in the embodiments of the present application.
In the method described in fig. 2, the first CSI is measured according to the first reference signal, the second CSI is measured according to the second reference signal, and the channel estimation results of the multiple reference signals are reported to the network device, so that more frequency domain channel quality information is provided for the network device, and the network device can perform efficient data transmission on resources with better channel quality.
Fig. 4 is another method for reporting channel state information according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:
step S401: and the terminal equipment acquires the CSI reporting mode.
Step S401 in the embodiment of the present application may refer to the description of step S201 in the above embodiment, and is not described again in the embodiment of the present application.
Step S402: the terminal equipment sends the target CSI to the network equipment, wherein the target CSI is determined according to the first CSI and the second CSI, the first CSI is measured according to the first reference signal, and the second CSI is measured according to the second reference signal.
In one implementation, the terminal device may use, as the target CSI, CSI with a larger CQI value in a first CQI and a second CQI, where the first CQI is a CQI in the first CSI, and the second CQI is a CQI in the second CSI.
In one implementation, the terminal device may use CSI with a larger transmission bandwidth of a first transmission bandwidth and a second transmission bandwidth as the target CSI, where the first transmission bandwidth is a transmission bandwidth of the first reference signal, and the second transmission bandwidth is a transmission bandwidth of the second reference signal.
In one implementation, after the terminal device obtains the first CSI, the second CSI, and the third CSI, the terminal device may determine the target CSI according to the first CSI, the second CSI, and the third CSI.
The method for determining the target CSI by the terminal device according to the first CSI, the second CSI, and the third CSI is the same as the method for determining the target CSI according to the first CSI and the second CSI, and specific reference may be made to the description of the method for determining the target CSI by the terminal device according to the first CSI and the second CSI, which is not repeated herein.
In one implementation, after the terminal device determines the target CSI according to the first CSI and the second CSI, the terminal device may indicate, to the network device, a type of a reference signal corresponding to the target CSI. The reference signal corresponding to the target CSI refers to a reference signal used when channel quality measurement is performed to obtain the target CSI. For example, the terminal device performs channel quality measurement by using a PDSCH-DMRS transmitted on a first transmission resource to obtain a first CSI, performs channel quality measurement by using a PDCCH-DMRS transmitted on a second transmission resource to obtain a second CSI, and if the target CSI is the first CSI, the terminal device may determine that a reference signal corresponding to the first CSI is the PDSCH-DMRS, and further indicate the type of the PDSCH-DMRS to the network device; if the target CSI is the second CSI, the terminal device may determine that the reference signal corresponding to the second CSI is the PDCCH-DMRS, and then indicate the type of the PDCCH-DMRS to the network device.
In one implementation, the manner in which the terminal device indicates the type of the reference signal corresponding to the target CSI to the network device may be as follows:
the terminal equipment sends indication information to the network equipment, wherein the indication information is used for indicating the type of a reference signal corresponding to the target CSI. For example, the terminal device may add a bit to the data including the target CSI, add the indication information to the added bit, and then send the data to which the indication information is added to the network device, so that the network device may determine the type of the reference signal corresponding to the target CSI based on the indication information included in the added bit in the data. For another example, if the increased bit is 0, the network device may determine that the reference signal reported by the terminal device is the PDSCH-DMRS; if the increased bit is 1, the network device may determine that the reference signal reported by the terminal device is a PDCCH-DMRS.
And secondly, the terminal equipment sends the target CSI to the network equipment on the third transmission resource. The third transmission resource is determined according to a mapping relationship between the type of the reference signal and the uplink transmission resource, and the mapping relationship between the type of the reference signal and the uplink transmission resource may be configured by the network device to the terminal device, or obtained by the network device and the terminal device through protocol pre-definition. For example, the type of the reference signal and the mapping relationship of the uplink transmission resource are as follows: the type of the first reference signal is mapped with a first uplink transmission resource, the type of the second reference signal is mapped with a second uplink transmission resource, the type of the third reference signal is mapped with a third uplink transmission resource, and the type of the reference signal corresponding to the target CSI is the type of the first reference signal, so that the terminal device can send the target CSI to the network device on the first uplink transmission resource, and the network device can determine that the transmission resource for transmitting the target CSI is the first uplink transmission resource and determine the type of the reference signal corresponding to the target CSI according to the first uplink transmission resource.
For details that are not specifically detailed in the embodiments of the present application, reference may be made to the description related to fig. 1 or fig. 2, and details are not repeated in the embodiments of the present application.
In the method described in fig. 4, the terminal device sends the target CSI to the network device, where the target CSI is determined according to the first CSI measured according to the first reference signal and the second CSI measured according to the second reference signal, and reports the channel estimation results of the multiple reference signals to the network device, so as to provide more frequency domain channel quality information for the network device, and enable the network device to perform efficient data transmission on resources with better channel quality.
Fig. 5 is another method for reporting channel state information according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:
step S501: and the terminal equipment acquires the CSI reporting mode.
Step S501 in this embodiment may refer to the description of step S201 in the above embodiment, and this embodiment is not described again.
Step S502: the terminal device sends a third CSI and a fourth CSI to the network device, wherein the third CSI is measured according to a reference signal transmitted on a first frequency domain resource, the fourth CSI is measured according to a reference signal transmitted on a second frequency domain resource, the first frequency domain resource is a frequency domain resource corresponding to the first reference signal, and the second frequency domain resource is a frequency domain resource in BWP except the first frequency domain resource. In this application, the frequency domain resource corresponding to the first reference signal may be a frequency domain resource used for transmitting the first reference signal.
The first reference signal may be a DMRS, and for example, the first reference signal may be a PDSCH-DMRS. The number of the third CSI may be one or more, and the number of the fourth CSI may be one or more.
In one implementation, if the first reference signal is continuously distributed in the BWP, the frequency domain resource corresponding to the first reference signal may be the frequency domain resource transmitting the first reference signal in the BWP.
Taking fig. 6 as an example, if the first reference signal is a PDSCH-DMRS and the second reference signal is a PDCCH-DMRS, the first frequency-domain resource may be a frequency-domain resource included in rows 8 to 21, where the reference signals transmitted on the first frequency-domain resource are the PDSCH-DMRS and the PDCCH-DMRS. The second frequency domain resource may be a frequency domain resource included in rows 2 to 7, where the reference signal transmitted on the second frequency domain resource is a PDCCH-DMRS.
Taking fig. 6 as an example, if the first reference signal is a PDSCH-DMRS and the second reference signal is a CSI-RS, the first frequency-domain resource may be a frequency-domain resource included in rows 8 to 21, where the reference signals transmitted on the first frequency-domain resource are the PDSCH-DMRS and the CSI-RS. The second frequency-domain resource may be a frequency-domain resource included in rows 5 to 7, and a frequency-domain resource included in rows 22 to 25, where the reference signal transmitted on the second frequency-domain resource is a CSI-RS.
Taking fig. 6 as an example, if the first reference signal is a PDSCH-DMRS, the second reference signal is a PDCCH-DMRS, the third reference signal is a CSI-RS, and the target reference signal is the first reference signal, the first frequency domain resource may be a frequency domain resource included in rows 8 to 21, where the reference signal transmitted on the first frequency domain resource is the PDSCH-DMRS, the PDCCH-DMRS, and the CSI-RS. The second frequency-domain resource may be a frequency-domain resource included in rows 2 to 7, and a frequency-domain resource included in rows 22 to 25, where the reference signal transmitted on the second frequency-domain resource is a CSI-RS and a PDCCH-DMRS.
In one implementation, if the first reference signal is discontinuously distributed in the BWP, the frequency domain resource corresponding to the first reference signal may be a frequency domain resource greater than or equal to a first boundary of the first reference signal and less than or equal to a second boundary of the first reference signal, where the first boundary is a location of a frequency domain resource with a minimum frequency for transmitting the first reference signal, and the second boundary is a location of a frequency domain resource with a maximum frequency for transmitting the first reference signal. For example, the first reference signal is a PDSCH-DMRS, the second reference signal is a PDCCH-DMRS, the frequency domain resources for transmitting the PDSCH-DMRS are the frequency domain resources included in the 8 th, 10 th and 18 th rows, and the frequency domain resources for transmitting the PDCCH-DMRS are the frequency domain resources included in the 2 nd to 14 th rows. The first boundary of the PDSCH-DMRS is the 8 th row frequency domain resource, the second boundary of the PDSCH-DMRS is the 18 th row frequency domain resource, and the first frequency domain resource may be the frequency domain resources included in the 8 th to 18 th rows, where the reference signal transmitted on the first frequency domain resource is the PDSCH-DMRS and the PDCCH-DMRS. The second frequency domain resource may be a frequency domain resource included in rows 2 to 7, where the reference signal transmitted on the second frequency domain resource is a PDCCH-DMRS.
In one implementation, if the first reference signal is interleaved (for example, the first reference signal is transmitted on two segments of frequency domain resources according to a certain mapping rule, and the first reference signal is continuously distributed on each segment of frequency domain resource), the frequency domain resource corresponding to the first reference signal may be a frequency domain resource for transmitting the first reference signal, where the frequency domain resource corresponding to the first reference signal includes a first sub-resource and a second sub-resource. For example, the first reference signal is a PDSCH-DMRS, the second reference signal is a PDCCH-DMRS, the interleaved PDSCH-DMRS is transmitted on the frequency domain resources of the 8 th to 10 th rows and the 16 th to 18 th rows, and the frequency domain resource for transmitting the PDCCH-DMRS is the frequency domain resource included in the 2 nd to 14 th rows. The first frequency domain resource can be the 8 th-10 th and 16 th-18 th line frequency domain resources, wherein the first sub-resource is the 8 th-10 th line frequency domain resource, the second sub-resource is the 16 th-18 th line frequency domain resource, the reference signals transmitted on the first sub-resource are PDSCH-DMRS and PDCCH-DMRS, and the reference signals transmitted on the second sub-resource are PDSCH-DMRS. The second frequency-domain resource may be a frequency-domain resource included in rows 2 to 7 and 11 to 14, where the reference signal transmitted on the second frequency-domain resource is a PDCCH-DMRS.
In one implementation, the number of frequency domain resources to transmit the first reference signal is greater than the number of frequency domain resources to transmit the second reference signal. Taking fig. 6 as an example, if the number of frequency domain resources for transmitting the PDCCH-DMRS is 13 and the number of frequency domain resources for transmitting the PDSCH-DMRS is 14, the terminal device may use the PDSCH-DMRS as the first reference signal.
In an implementation manner, when the terminal device transmits at least one reference signal in the first frequency domain resource acquired by the terminal device, the terminal device may perform channel quality measurement according to the first reference signal transmitted in the first frequency domain resource to obtain the third CSI. Taking fig. 6 as an example, if the PDCCH-DMRS and the PDSCH-DMRS are transmitted on the first frequency-domain resource, the terminal device may perform channel quality measurement using the PDSCH-DMRS transmitted on the first frequency-domain resource, to obtain the third CSI.
In one implementation, if the frequency domain resource corresponding to the first reference signal includes the first sub-resource and the second sub-resource, the terminal device may perform channel quality measurement using the reference signal transmitted on the first sub-resource to obtain fifth CSI, perform channel quality measurement using the reference signal transmitted on the second sub-resource to obtain sixth CSI, and use the fifth CSI and the sixth CSI as the third CSI. For example, the first sub-resource is an 8 th-10 th row frequency domain resource, the reference signals transmitted on the first sub-resource are a PDSCH-DMRS and a PDCCH-DMRS, and since the first sub-resource transmits two types of reference signals, the terminal device may perform channel quality measurement using the PDSCH-DMRS transmitted on the first sub-resource to obtain a seventh CSI, perform channel quality measurement using the PDCCH-DMRS transmitted on the first sub-resource to obtain an eighth CSI, determine a target CSI according to the seventh CSI and the eighth CSI, and use the target CSI as a fifth CSI. The second sub-resource is a 16 th-18 th row frequency domain resource, the reference signal transmitted on the second sub-resource is a PDSCH-DMRS, and the terminal device can use the PDSCH-DMRS transmitted on the second sub-resource to measure the channel quality to obtain a sixth CSI because the second sub-resource transmits one reference signal. For another example, the reference signals transmitted on the first sub-resource are PDSCH-DMRS and PDCCH-DMRS, the reference signals transmitted on the second sub-resource are PDSCH-DMRS, the terminal device may perform channel quality measurement using the PDSCH-DMRS transmitted on the first sub-resource to obtain the fifth CSI, and perform channel quality measurement using the PDSCH-DMRS transmitted on the second sub-resource to obtain the sixth CSI. In an implementation manner, when the first frequency domain resource acquired by the terminal device only transmits the first reference signal, the terminal device may perform channel quality measurement according to the first reference signal transmitted on the first frequency domain resource to obtain the third CSI.
In an implementation manner, when any one of the frequency domain resources acquired by the terminal device transmits at least two reference signals, the terminal device may perform channel quality measurement using various reference signals transmitted on the frequency domain resource to obtain each CSI, and the terminal device may send each CSI to the network device. For example, when the first reference signal and the second reference signal are transmitted on the first frequency domain resource, the terminal device may perform channel quality measurement using the first reference signal transmitted on the first frequency domain resource to obtain seventh CSI, perform channel quality measurement using the second reference signal transmitted on the first frequency domain resource to obtain eighth CSI, and use the seventh CSI and the eighth CSI as the third CSI. Taking fig. 6 as an example, if the PDCCH-DMRS and the PDSCH-DMRS are transmitted on the first frequency-domain resource, the terminal device may perform channel quality measurement using the PDCCH-DMRS transmitted on the first frequency-domain resource to obtain the seventh CSI, and perform channel quality measurement using the PDSCH-DMRS transmitted on the first frequency-domain resource to obtain the eighth CSI.
In an implementation manner, when any one of the frequency domain resources acquired by the terminal device transmits at least two reference signals, the terminal device may perform channel quality measurement using various reference signals transmitted on the frequency domain resource to obtain each CSI, and the terminal device may determine a target CSI according to each CSI and use the target CSI as a third CSI. For example, when the first reference signal and the second reference signal are transmitted on the first frequency domain resource, the terminal device may perform channel quality measurement using the first reference signal transmitted on the first frequency domain resource to obtain seventh CSI, perform channel quality measurement using the second reference signal transmitted on the first frequency domain resource to obtain eighth CSI, determine target CSI according to the seventh CSI and the eighth CSI, and use the target CSI as the third CSI. Taking fig. 6 as an example, if the PDCCH-DMRS and the PDSCH-DMRS are transmitted on the first frequency-domain resource, the terminal device may perform channel quality measurement using the PDCCH-DMRS transmitted on the first frequency-domain resource to obtain a seventh CSI, and perform channel quality measurement using the PDSCH-DMRS transmitted on the first frequency-domain resource to obtain an eighth CSI, and if a channel quality measurement result indicated by the seventh CSI is better than a channel quality measurement result indicated by the eighth CSI, the terminal device may use the seventh CSI as the third CSI.
The method for determining the target CSI by the terminal device according to the seventh CSI and the eighth CSI is the same as the method for determining the target CSI according to the first CSI and the second CSI described in step S404 in the above embodiment, which may specifically refer to the description about the method for determining the target CSI by the terminal device according to the first CSI and the second CSI, and is not repeated in this embodiment.
The method for acquiring the fourth CSI by the terminal device is the same as the method for acquiring the third CSI by the terminal device, and reference may be specifically made to the description related to the terminal device acquiring the third CSI, which is not repeated in this embodiment of the present application.
In one implementation, before the terminal device performs channel quality measurement using a reference signal transmitted on any frequency domain resource to obtain CSI, it may be determined that at least one reference signal is transmitted on the frequency domain resource. For example, before the terminal device performs channel quality measurement using the reference signal transmitted on the second frequency-domain resource to obtain the fourth CSI, it may be determined that at least one reference signal is transmitted on the second frequency-domain resource. In the embodiment of the present application, for a frequency domain resource without a reference signal, a terminal device may not perform channel quality measurement on the frequency domain resource, and may not report CSI of the frequency domain resource to a network device.
For details that are not specifically detailed in the embodiments of the present application, reference may be made to descriptions in fig. 1 to fig. 4, which are not repeated herein.
In the method described in fig. 5, the terminal device sends the third CSI and the fourth CSI to the network device, where the third CSI is measured according to the reference signal transmitted on the first frequency-domain resource, the fourth CSI is measured according to the reference signal transmitted on the second frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, and the second frequency-domain resource is a frequency-domain resource other than the first frequency-domain resource in the BWP, and reports the channel estimation results of the multiple reference signals to the network device, so as to provide more frequency-domain channel quality information for the network device, and enable the network device to perform efficient data transmission on a resource with better channel quality.
Fig. 7 is another method for reporting channel state information according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:
step S701: and the terminal equipment acquires the CSI reporting mode.
Step S701 in this embodiment may refer to the description of step S201 in the above embodiment, and this embodiment is not described again.
Step S702: the terminal device sends a third CSI, a fifth CSI and a sixth CSI to the network device, wherein the third CSI is measured according to a reference signal transmitted on a first frequency domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency domain resource, the first frequency domain resource is a frequency domain resource corresponding to the first reference signal, the third frequency domain resource is a frequency domain resource with a frequency in BWP smaller than that of the first frequency domain resource, and the fourth frequency domain resource is a frequency domain resource with a frequency in BWP larger than that of the first frequency domain resource.
Taking fig. 6 as an example, if the first reference signal is a PDSCH-DMRS, the second reference signal is a PDCCH-DMRS, and the third reference signal is a CSI-RS, the first frequency-domain resource may be a frequency-domain resource included in rows 8 to 21, where the reference signal transmitted on the first frequency-domain resource includes the PDSCH-DMRS, the PDCCH-DMRS, and the CSI-RS. The third frequency domain resource may be a frequency domain resource included in rows 2 to 7, and the reference signal transmitted on the third frequency domain resource includes CSI-RS and PDCCH-DMRS. The fourth frequency-domain resource may be a frequency-domain resource included in rows 22 to 25, and the reference signal transmitted on the fourth frequency-domain resource is a CSI-RS.
In one implementation, the number of first frequency domain resources is greater than the number of third frequency domain resources, and the number of first frequency domain resources is greater than the number of fourth frequency domain resources.
For details that are not specifically detailed in the embodiments of the present application, reference may be made to descriptions in fig. 1 to fig. 5, which are not repeated herein.
In the method depicted in fig. 7, the terminal device transmits the third CSI, the fifth CSI and the sixth CSI to the network device, wherein the third CSI is measured according to a reference signal transmitted on the first frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on the third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on the fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the third frequency-domain resource is a frequency-domain resource whose frequency in BWP is smaller than that of the first frequency-domain resource, the fourth frequency-domain resource is a frequency-domain resource whose frequency in BWP is greater than that of the first frequency-domain resource, the channel estimation results of various reference signals are reported to the network equipment, so that more frequency domain channel quality information is provided for the network equipment, and the network equipment can perform efficient data transmission on resources with better channel quality.
Fig. 8 is another method for reporting channel state information according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:
step S801: and the terminal equipment acquires the CSI reporting mode.
Step S801 in the embodiment of the present application may refer to the description of step S201 in the above embodiment, and the embodiment of the present application is not described again.
Step S802: the terminal device sends the first CSI, the second CSI and the third CSI to the network device, wherein the first CSI is measured according to a reference signal transmitted on the first frequency domain resource, the second CSI is measured according to a reference signal transmitted on the second frequency domain resource, the third CSI is measured according to a reference signal transmitted on the third frequency domain resource, and the first frequency domain resource, the second frequency domain resource and the third frequency domain resource are determined according to a first boundary and a second boundary of the first reference signal, and a first boundary and a second boundary of the second reference signal.
The number of the first CSI may be one or more, the number of the second CSI may be one or more, and the number of the third CSI may be one or more.
In one implementation manner, a first boundary and a second boundary of a first reference signal, and a first boundary and a second boundary of a second reference signal are ordered from small to large, a first frequency domain resource, a second frequency domain resource, or a third frequency domain resource is a frequency domain resource between two adjacent boundaries, and the first frequency domain resource, the second frequency domain resource, or the third frequency domain resource are different from each other. Illustratively, if the first boundary of the first reference signal is less than the second boundary of the first reference signal, the second boundary of the first reference signal is less than the first boundary of the second reference signal, and the first boundary of the second reference signal is less than the second boundary of the second reference signal. Based on this, the first frequency domain resource may be a frequency domain resource that is greater than or equal to a first boundary of the first reference signal and less than or equal to a second boundary of the first reference signal. The second frequency domain resources may be frequency domain resources that are larger than a second boundary of the first reference signal and smaller than a first boundary of the second reference signal. The third frequency domain resource may be a frequency domain resource that is greater than or equal to a first boundary of the second reference signal and less than or equal to a second boundary of the second reference signal.
In one implementation, if the first reference signal is continuously distributed in the BWP, the first frequency-domain resources, the second frequency-domain resources, and the third frequency-domain resources are determined according to a first boundary of the first reference signal, a second boundary of the first reference signal, a first boundary of the second reference signal, and a second boundary of the second reference signal.
Taking fig. 9 as an example, if the first reference signal is PDCCH-DMRS and the second reference signal is PDSCH-DMRS, the first boundary of PDCCH-DMRS is the frequency domain resource included in row 2, and the second boundary of PDCCH-DMRS is the frequency domain resource included in row 14. The first boundary of the PDSCH-DMRS is the frequency domain resource included in row 8, and the second boundary of the PDSCH-DMRS is the frequency domain resource included in row 21. The first frequency domain resources may be frequency domain resources included in rows 2 to 7, the second frequency domain resources may be frequency domain resources included in rows 8 to 14, and the third frequency domain resources may be frequency domain resources included in rows 15 to 21.
Taking fig. 9 as an example, if the first reference signal is a CSI-RS and the second reference signal is a PDSCH-DMRS, the first boundary of the CSI-RS is the frequency domain resource included in row 5, and the second boundary of the CSI-RS is the frequency domain resource included in row 25. The first boundary of the PDSCH-DMRS is the frequency domain resource included in row 8, and the second boundary of the PDSCH-DMRS is the frequency domain resource included in row 21. The first frequency domain resources may be frequency domain resources included in rows 5 to 7, the second frequency domain resources may be frequency domain resources included in rows 8 to 21, and the third frequency domain resources may be frequency domain resources included in rows 22 to 25.
In one implementation, if the first reference signal is discontinuously distributed in the BWP, the frequency domain resource corresponding to the first reference signal may be a frequency domain resource greater than or equal to a first boundary of the first reference signal and less than or equal to a second boundary of the first reference signal, where the first boundary is a location of a frequency domain resource with a minimum frequency for transmitting the first reference signal, and the second boundary is a location of a frequency domain resource with a maximum frequency for transmitting the first reference signal. The first, second, and third frequency domain resources are determined based on a first boundary of the first reference signal, a second boundary of the first reference signal, a first boundary of the second reference signal, and a second boundary of the second reference signal. For example, the first reference signal is a PDCCH-DMRS, the second reference signal is a PDSCH-DMRS, the frequency domain resources for transmitting the PDSCH-DMRS are frequency domain resources included in the 8 th row, the 10 th row and the 18 th row, the frequency domain resources corresponding to the PDSCH-DMRS are frequency domain resources included in the 8 th row to the 18 th row, the first boundary of the PDSCH-DMRS is the frequency domain resource included in the 8 th row, and the second boundary of the PDSCH-DMRS is the frequency domain resource included in the 18 th row. The first boundary of the PDCCH-DMRS is the frequency domain resource contained in the 2 nd row, and the second boundary of the PDCCH-DMRS is the frequency domain resource contained in the 14 th row. The first frequency domain resources may be frequency domain resources included in rows 2 to 7, the second frequency domain resources may be frequency domain resources included in rows 8 to 14, and the third frequency domain resources may be frequency domain resources included in rows 15 to 18.
In one implementation, if the first reference signal is interleaved, the frequency domain resource corresponding to the first reference signal may be a frequency domain resource for transmitting the first reference signal, where the frequency domain resource corresponding to the first reference signal includes a first sub-resource and a second sub-resource. The first, second, and third frequency domain resources are determined based on a first boundary of the first reference signal, a second boundary of the first reference signal, a first boundary of the second reference signal, and a second boundary of the second reference signal. For example, the first reference signal is a PDSCH-DMRS, the second reference signal is a PDCCH-DMRS, and the PDSCH-DMRS after interleaving is transmitted in the frequency domain resources of the 8 th to 10 th rows and the 16 th to 18 th rows, that is, the first sub-resource is the frequency domain resource of the 8 th to 10 th rows, and the second sub-resource is the frequency domain resource of the 16 th to 18 th rows. A first boundary of the first sub-resource is the frequency domain resource included in the 8 th row, and a second boundary of the first sub-resource is the frequency domain resource included in the 10 th row. A first boundary of the second sub-resource is the frequency domain resource included in the 16 th row, and a second boundary of the second sub-resource is the frequency domain resource included in the 18 th row. The frequency domain resources for transmitting the PDCCH-DMRS are the frequency domain resources contained in the 2 nd to 14 th rows. The first boundary of the PDCCH-DMRS is the frequency domain resource contained in the 2 nd row, and the second boundary of the PDCCH-DMRS is the frequency domain resource contained in the 14 th row. The first frequency domain resource may be a frequency domain resource included in rows 2 to 7, the second frequency domain resource may be a frequency domain resource included in rows 8 to 10, the third frequency domain resource may be a frequency domain resource included in rows 11 to 14, the fourth frequency domain resource may be a frequency domain resource of row 15, and the fifth frequency domain resource may be a frequency domain resource included in rows 16 to 18.
In one implementation, if the CSI reporting manner includes CSI reporting using a first reference signal, a second reference signal, and a third reference signal, the terminal device may send the first CSI measured according to the reference signal transmitted on the first frequency-domain resource, the second CSI measured according to the reference signal transmitted on the second frequency-domain resource, the third CSI measured according to the reference signal transmitted on the third frequency-domain resource, the fourth CSI measured according to the reference signal transmitted on the fourth frequency-domain resource, the fifth CSI measured according to the reference signal transmitted on the fifth frequency-domain resource, the first frequency-domain resource, the second frequency-domain resource, the third frequency-domain resource, the fourth frequency-domain resource, and the fifth frequency-domain resource measured according to the first boundary and the second boundary of the first reference signal, the first boundary and the second boundary of the second reference signal, and the first boundary and the second boundary of the third reference signal.
Taking fig. 9 as an example, if the first reference signal is PDCCH-DMRS, the second reference signal is PDSCH-DMRS, the third reference signal is CSI-RS, the first boundary of PDCCH-DMRS is the frequency domain resource included in row 2, and the second boundary of PDCCH-DMRS is the frequency domain resource included in row 14. The first boundary of the PDSCH-DMRS is the frequency domain resource included in row 8, and the second boundary of the PDSCH-DMRS is the frequency domain resource included in row 21. The first boundary of the CSI-RS is the frequency domain resource included in row 5, and the second boundary of the CSI-RS is the frequency domain resource included in row 25. The first frequency domain resource may be a frequency domain resource included in rows 2 to 4, the second frequency domain resource may be a frequency domain resource included in rows 5 to 7, the third frequency domain resource may be a frequency domain resource included in rows 8 to 14, the fourth frequency domain resource may be a frequency domain resource included in rows 15 to 21, and the fifth frequency domain resource may be a frequency domain resource included in rows 22 to 25.
For details that are not specifically detailed in the embodiments of the present application, reference may be made to descriptions in fig. 1 to fig. 7, which are not repeated herein.
In the method described in fig. 8, a terminal device sends first CSI, second CSI, and third CSI to a network device, where the first CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the second CSI is measured according to a reference signal transmitted on a second frequency-domain resource, the third CSI is measured according to a reference signal transmitted on a third frequency-domain resource, and the first frequency-domain resource, the second frequency-domain resource, and the third frequency-domain resource are determined according to a first boundary and a second boundary of the first reference signal, and a first boundary and a second boundary of the second reference signal, and channel estimation results of multiple types of reference signals are reported to the network device, so as to provide more frequency-domain channel quality information for the network device, and enable the network device to perform efficient data transmission on a resource with better channel quality.
In another method for reporting channel state information provided in the embodiments of the present application, after obtaining multiple frequency domain resources through the manners described in fig. 5 to fig. 8, a terminal device may perform finer-grained grouping on the frequency domain resources. Taking finer-grained grouping of the first frequency domain resources as an example, under the condition that only the first reference signal is transmitted on the first frequency domain resources, the third CSI is a target CSI determined according to the L CSIs, wherein the S-th CSI is measured according to the first reference signal transmitted on the S-th group of sub-resources, the S-th group of sub-resources is one of the L groups of sub-resources used for transmitting the first reference signal, L is determined according to the number of frequency domain resources corresponding to the first reference signal, the L groups of sub-resources are determined according to the mapping type from the first reference signal to the frequency domain resources, the mapping type includes continuous mapping and discontinuous mapping, S and L are positive integers, and S is greater than or equal to 1 and less than or equal to L.
Taking fig. 2 as an example, the first reference signal is a PDSCH-DMRS, and the PDSCH-DMRS is located on the 11 th row to the 17 th row of the frequency domain resource, so that the number of the frequency domain resources corresponding to the first reference signal may be 17-11+1 — 7. Under the condition that the mapping type of the first reference signal to the frequency domain resources is the non-continuous mapping, the number of the frequency domain resources corresponding to the first reference signal refers to the number of the frequency domain resources that are greater than or equal to the first boundary of the first reference signal and less than or equal to the second boundary of the first reference signal, taking fig. 12 as an example, the first boundary of the first reference signal is the 2 nd row of frequency domain resources, and the second boundary of the first reference signal is the 16 th row of frequency domain resources, then the number of the frequency domain resources corresponding to the first reference signal may be 16-2+ 1-15.
Taking fig. 2 as an example, after the terminal device obtains the first frequency domain resource for transmitting the first reference signal, the method for performing channel quality measurement by using the first reference signal transmitted on the first frequency domain resource may be: and determining L according to the number of the frequency domain resources corresponding to the first reference signal, grouping the first frequency domain resources to obtain L groups of sub-resources, and further performing channel quality measurement by using the first reference signal transmitted on the S-th sub-resource to obtain the S-th CSI.
Taking fig. 5 as an example, if the second reference signal is the PDSCH-DMRS and the network device indicates to perform finer-grained grouping on the PDSCH-DMRS, after the terminal device acquires the first frequency-domain resource, the channel quality measurement using the PDSCH-DMRS transmitted on the first frequency-domain resource may be performed by: and grouping the first frequency domain resources according to the mapping type from the PDSCH-DMRS to the first frequency domain resources to obtain L groups of sub-resources, and further performing channel quality measurement by using the PDSCH-DMRS transmitted on the S sub-resources to obtain the S CSI.
Taking fig. 8 as an example, if the first reference signal is a PDCCH-DMRS, and the network device indicates to perform finer-grained grouping on the PDCCH-DMRS, after the terminal device acquires the first frequency-domain resource, the third frequency-domain resource, and the fourth frequency-domain resource, it is determined that the frequency-domain resources transmitting the PDCCH-DMRS are the first frequency-domain resource and the second frequency-domain resource, and a manner that the terminal device performs channel quality measurement using the PDCCH-DMRS transmitted on the first frequency-domain resource may be: and grouping the first frequency domain resources according to the mapping type from the PDCCH-DMRS to the first frequency domain resources to obtain L groups of sub-resources, and further performing channel quality measurement by using the PDSCH-DMRS transmitted on the S sub-resources to obtain the S CSI. The method for the terminal device to perform channel quality measurement by using the PDCCH-DMRS transmitted on the third frequency domain resource may be: and grouping the second frequency domain resources according to the mapping type from the PDCCH-DMRS to the second frequency domain resources to obtain L groups of sub-resources, and further performing channel quality measurement by using the PDCCH-DMRS transmitted on the S sub-resources to obtain the S CSI.
In one implementation manner, under the condition that the mapping type is continuous mapping, the number of frequency domain resources for transmitting the first reference signal on the kth group of sub-resources is floor (N/L), the number of frequency domain resources for transmitting the first reference signal on the lth group of sub-resources is N- (L-1) × floor (N/L), where N is the sum of the number of frequency domain resources for transmitting the first reference signal, K is a positive integer, and K is greater than or equal to 1 and less than or equal to L-1.
For example, the terminal device may obtain indication information from the network device, where the indication information is used to indicate that the designated reference signal transmitted on the first frequency domain resource is to be interleaved, and the terminal device may group the frequency domain resources for transmitting the designated reference signal according to a mapping type from the interleaved designated reference signal to the frequency domain resources to obtain L groups of sub-resources. Taking fig. 10 as an example, 10 first reference signals are transmitted on a first frequency domain resource, where the first reference signals are located in frequency domain resources included in rows 2 to 11, the first reference signals after interleaving are located in frequency domain resources included in rows 3 to 7 and frequency domain resources included in rows 11 to 15, if L is 2, the terminal device may group the frequency domain resources for transmitting the first reference signals according to a mapping type of the first reference signals after interleaving to the frequency domain resources to obtain first sub-resources and second sub-resources, where the first sub-resources transmit 5 first reference signals, the first sub-resources include the frequency domain resources included in rows 3 to 7, the second sub-resources transmit 5 first reference signals, and the second sub-resources include the frequency domain resources included in rows 11 to 15. In another example, if 12 first reference signals are transmitted on the first frequency domain resource, L ═ 2, the terminal device may obtain a first sub-resource on which 5 reference signals are transmitted, a second sub-resource on which 5 reference signals are transmitted, and a third sub-resource on which 2 reference signals are transmitted.
For another example, the terminal device may obtain indication information from the network device, where the indication information is used to indicate that the specified reference signal transmitted on the first frequency domain resource is to be interleaved, and the terminal device may group the first frequency domain resource for transmitting the reference signal to obtain at least two sub-resources, and perform interleaving on the reference signal transmitted on each of the sub-resources. Taking fig. 10 as an example, 10 first reference signals are transmitted from the first frequency domain resource, the first reference signals are located in the frequency domain resources included in rows 2 to 11, if L is 2, the terminal device may group the first frequency domain resources to transmit the first reference signals, to obtain a first sub-resource and a second sub-resource, where the first sub-resource transmits 5 first reference signals, the first sub-resource includes the frequency domain resources included in rows 2 to 6, the second sub-resource transmits 5 first reference signals, and the second sub-resource includes the frequency domain resources included in rows 7 to 11. The terminal device may perform interleaving processing on the first reference signal transmitted on the first sub-resource, and the interleaved first reference signal is transmitted on the 3 rd to 7 th line of frequency domain resources. The terminal device may further perform interleaving processing on the first reference signal transmitted on the second sub-resource, and the interleaved first reference signal is transmitted on the 11 th to 15 th line of frequency domain resources. In another example, if the first frequency domain resource transmits 12 first reference signals, and L is 2, the terminal device may obtain a first sub-resource, a second sub-resource, and a third sub-resource, wherein the first sub-resource transmits 5 reference signals, the second sub-resource transmits 5 reference signals, and the third sub-resource transmits 2 reference signals.
For another example, when the network device indicates not to interleave the designated reference signal transmitted on the first frequency domain resource, the terminal device may group the frequency domain resources for transmitting the designated reference signal according to a mapping type from the designated reference signal to the frequency domain resources, so as to obtain L groups of sub-resources. In this embodiment, when the network device indicates not to interleave the reference signal, the terminal device may directly group the first frequency domain resource. Taking fig. 11 as an example, 10 first reference signals are transmitted from the first frequency domain resource, the first reference signals are located in the frequency domain resources included in rows 4 to 13, if L is 2, the terminal device may group the first frequency domain resources to transmit the first reference signals, to obtain a first sub-resource and a second sub-resource, where the first sub-resource transmits 5 first reference signals, the first sub-resource includes the frequency domain resources included in rows 4 to 8, the second sub-resource transmits 5 first reference signals, and the second sub-resource includes the frequency domain resources included in rows 9 to 13. In another example, if the first frequency domain resource transmits 12 first reference signals, and L is 2, the terminal device may obtain a first sub-resource, a second sub-resource, and a third sub-resource, wherein the first sub-resource transmits 5 reference signals, the second sub-resource transmits 5 reference signals, and the third sub-resource transmits 2 reference signals.
In one implementation manner, under the condition that the mapping type is the non-continuous mapping, the number of frequency domain resources for transmitting the first reference signal on the kth group of sub-resources is floor (N/L), the number of frequency domain resources for transmitting the first reference signal on the lth group of sub-resources is N- (L-1) × floor (N/L), where N is the sum of the number of frequency domain resources for transmitting the first reference signal, K is a positive integer, and K is greater than or equal to 1 and less than or equal to L-1. Taking fig. 12 as an example, the first reference signals transmitted by the first frequency domain resource are located in the frequency domain resources included in rows 2, 4, 5, 9 to 13, 15 and 16, where the number of signals of the first reference signals transmitted by the first frequency domain resource is 10, and if L is 2, the terminal device may use the frequency domain resources included in rows 2 to 10 as the first sub-resource, and the first sub-resource transmits 5 first reference signals. The terminal device may further use the frequency domain resources included in rows 11 to 16 as second sub-resources, where the second sub-resources transmit 5 first reference signals. In another example, if the first frequency domain resource transmits 12 first reference signals, and L is 2, the terminal device may obtain a first sub-resource, a second sub-resource, and a third sub-resource, wherein the first sub-resource transmits 5 reference signals, the second sub-resource transmits 5 reference signals, and the third sub-resource transmits 2 reference signals.
In one implementation, under the condition that the mapping type is non-continuous mapping, the number of the kth group of sub-resources is floor (M/L), the number of the lth group of sub-resources is M- (L-1) × floor (M/L), where M is a sum of numbers of target frequency domain resources, the target frequency domain resources are frequency domain resources greater than or equal to a first boundary of the first reference signal and less than or equal to a second boundary of the first reference signal, the first boundary is a location of a frequency domain resource with a minimum frequency for transmitting the first reference signal, the second boundary is a location of a frequency domain resource with a maximum frequency for transmitting the first reference signal, M, L and K are positive integers, and K is greater than or equal to 1 and less than or equal to L-1. Taking fig. 13 as an example, the first reference signals transmitted by the first frequency domain resource are located in the frequency domain resources included in rows 2, 4, 5, 9 to 13, 15 and 16, where the number of the frequency domain resources included in rows 2 to 16 is 15, and if L is 2, the terminal device may use the frequency domain resources included in rows 2 to 8 as the first sub-resource, where the first sub-resource transmits 3 first reference signals, and the number of the first sub-resource is 7. The terminal device may further use the frequency domain resources included in rows 9 to 16 as second sub-resources, where the second sub-resources transmit 7 first reference signals, and the resource number of the second sub-resources is 8.
Under the condition that a first reference signal and a second reference signal are transmitted on a first frequency domain resource, third CSI is a first target CSI determined according to L CSI, wherein the S CSI is measured according to a target reference signal transmitted on an S-th group of sub-resources, the S-th group of sub-resources is one of L groups of sub-resources used for transmitting the target reference signal, L is determined according to the number of frequency domain resources corresponding to the target reference signal, L groups of sub-resources are determined according to the mapping type from the target reference signal to the frequency domain resources, the mapping type comprises continuous mapping and discontinuous mapping, S and L are positive integers, and S is more than or equal to 1 and less than or equal to L.
The target reference signal may be a reference signal corresponding to second target CSI, the second target CSI may be determined according to seventh CSI measured according to the first reference signal transmitted on the first frequency-domain resource and eighth CSI measured according to the second reference signal transmitted on the first frequency-domain resource.
Taking fig. 6 as an example, if the first frequency domain resource is the frequency domain resource included in the 8 th to 21 th rows, the first reference signal transmitted on the first frequency domain resource is the PDSCH-DMRS, and the second reference signal transmitted on the first frequency domain resource is the PDCCH-DMRS, the seventh CSI is obtained according to the PDSCH-DMRS measurement transmitted on the first frequency domain resource, and the eighth CSI is obtained according to the PDCCH-DMRS measurement transmitted on the first frequency domain resource. The second target CSI is determined according to the seventh CSI and the eighth CSI, and if the second target CSI is the seventh CSI, the target reference signal may be a PDSCH-DMRS, and the L-group sub-resources may be determined by a mapping type of the PDSCH-DMRS to the first frequency-domain resources. If the second target CSI is the eighth CSI, the target reference signal may be a PDCCH-DMRS, and the L groups of sub-resources may be determined by a mapping type of the PDCCH-DMRS to the first frequency domain resource.
In an implementation manner, before the terminal device groups the first frequency domain resources for transmitting the reference signal, the resource quantity of the first frequency domain resources may be obtained, and when the resource quantity is greater than a preset quantity threshold, the terminal device may group the first frequency domain resources for transmitting the reference signal.
When the first reference signal is the PDSCH-DMRS, the terminal device may report the channel state information in any one of the above manners. When the first reference signal is PDCCH-DMRS, the frequency domain resource for transmitting the PDCCH-DMRS is configured according to a Control Channel Element (CCE) and an aggregation level thereof, so that the terminal device may report the channel state information in an interleaving and grouping manner, or in a non-interleaving and grouping manner.
In the method for reporting channel state information in this embodiment, the first frequency domain resource is used as an example, and the grouping manner of other frequency domain resources, such as the second frequency domain resource or the third frequency domain resource, is the same as the grouping manner of the first frequency domain resource, which may specifically refer to the related description of the grouping manner of the first frequency domain resource, and this embodiment is not described again.
In the embodiment of the present application, for example, the terminal device performs finer-grained grouping, or after the network device obtains the boundaries of each sub-resource through the foregoing manner, the boundaries of the sub-resources and the lengths of the sub-resources are indicated to the terminal device, and the terminal device performs channel quality measurement and reporting based on the indication of the network device.
The embodiment of the present application provides another method for reporting channel state information, where when a mapping type of a first reference signal to a frequency domain resource is discontinuous mapping, a terminal device may send fifth CSI, sixth CSI, eleventh CSI, twelfth CSI, and thirteenth CSI to a network device, where the eleventh CSI is measured according to a reference signal transmitted on a first sub-resource in a first frequency domain resource, the twelfth CSI is measured according to a reference signal transmitted on a second sub-resource in the first frequency domain resource, the thirteenth CSI is measured according to a reference signal transmitted on a fifth frequency domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency domain resource, and the first frequency domain resource is a frequency domain resource corresponding to the first reference signal, the first sub-resource and the second sub-resource are parts of a first frequency domain resource, the first sub-resource and the second sub-resource are determined according to a discontinuous mapping type from a first reference signal to a frequency domain resource, the first sub-resource is a frequency domain resource with a frequency smaller than that of the second sub-resource, the fifth frequency domain resource is a frequency domain resource with a frequency larger than that of the first sub-resource and smaller than that of the second sub-resource, the third frequency domain resource is a frequency domain resource with a frequency smaller than that of the first sub-resource in BWP, and the fourth frequency domain resource is a frequency domain resource with a frequency larger than that of the second sub-resource in BWP.
For example, the first reference signal is a PDSCH-DMRS, if the PDSCH-DMRS is transmitted on the frequency domain resources of the 8 th to 10 th rows and the 19 th to 21 th rows, the first sub-resource may be a frequency domain resource included in the 8 th to 10 th rows, the second sub-resource may be a frequency domain resource included in the 19 th to 21 th rows, the fifth frequency domain resource is a frequency domain resource included in the 11 th to 18 th rows, and the first sub-resource, the second sub-resource, and the fifth frequency domain resource constitute the first frequency domain resource. If the second reference signal is a CSI-RS, and the CSI-RS is transmitted on the frequency domain resources of the rows 5 to 25, the third frequency domain resource is the frequency domain resource of the rows 5 to 7, and the fourth frequency domain resource is the frequency domain resource included in the rows 22 to 25.
The embodiment of the present application provides another method for reporting channel state information, where when a mapping type from a reference signal to a frequency domain resource is discontinuous mapping, a terminal device may group a first frequency domain resource for transmitting an assigned reference signal to obtain at least two sub-resources. Further, the terminal device may process at least two sub-resources based on the manners shown in fig. 5 to 8 to obtain at least four frequency domain resources, further perform channel quality measurement using the reference signals transmitted on each frequency domain resource to obtain at least four CSI, and send all the at least four CSI to the network device, or select a target CSI from the at least four CSI and send the target CSI to the network device. For example, the first reference signal is a PDCCH-DMRS, the mapping type of the PDCCH-DMRS to the frequency domain resources is mapped discontinuously, the terminal device may group the frequency domain resources for transmitting the PDCCH-DMRS to obtain a first sub-resource and a second sub-resource, where the first sub-resource is a frequency domain resource included in rows 2 to 8, the PDCCH-DMRS transmitted on the first sub-resource is located in frequency domain resources included in rows 2, 4, and 5, and the second sub-resource is a frequency domain resource included in rows 9 to 13, and a frequency domain resource included in rows 15 and 16. If the second reference signal is a PDSCH-DMRS, and the PDSCH-DMRS is located in the frequency domain resources of rows 8 to 18, the terminal device may obtain five frequency domain resources based on the manner shown in fig. 8, where the first frequency domain resource is a frequency domain resource included in rows 2 to 5, the second frequency domain resource is a frequency domain resource included in rows 5 to 8, the third frequency domain resource is a frequency domain resource included in row 8, the fourth frequency domain resource is a frequency domain resource included in rows 9 to 16, and the fifth frequency domain resource is a frequency domain resource included in rows 17 and 18.
In an implementation manner, before the terminal device performs channel quality measurement, the resource quantity of each frequency domain resource may be obtained, the frequency domain resource whose resource quantity is greater than a preset quantity threshold is determined, and then the reference signal transmitted on the determined frequency domain resource is used to perform channel quality measurement.
The embodiment of the present application provides another method for reporting channel state information, where a network device may equally divide a whole frequency domain resource to obtain a plurality of subbands, and then obtain at least two frequency domain resources by using any one of the above embodiments, perform channel quality measurement by using a reference signal transmitted on each frequency domain resource to obtain at least two CSI, and send the at least two CSI to the network device, or select a target CSI from the at least two CSI and send the target CSI to the network device. For example, the entire frequency domain resource includes 24 lines of frequency domain resources, the terminal device may divide the 24 lines of frequency domain resources into 4 sub-bands, each sub-band includes 6 lines of frequency domain resources, and for each sub-band, at least two frequency domain resources are obtained by using any one of the manners in the foregoing embodiments.
In an implementation manner, before the terminal device performs channel quality measurement, the resource quantity of each frequency domain resource may be obtained, the frequency domain resource whose resource quantity is greater than a preset quantity threshold is determined, and then the reference signal transmitted on the determined frequency domain resource is used to perform channel quality measurement.
Fig. 14 is another method for reporting channel state information according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:
step S1401: the terminal equipment acquires a CSI reporting mode, wherein the CSI reporting mode comprises the CSI reporting by using a reference signal.
Step S1402: the terminal device sends L CSI to the network device, wherein the S-th CSI is obtained by measurement according to a first reference signal transmitted on an S-th group of sub-resources, the S-th group of sub-resources is one of L groups of sub-resources used for transmitting the first reference signal, L is determined according to the number of frequency domain resources corresponding to the first reference signal, and the L groups of sub-resources are determined according to the mapping type from the first reference signal to the frequency domain resources.
When the first reference signal is the PDSCH-DMRS, the terminal device may report the channel state information in a finer-grained grouping manner in the above embodiment. When the first reference signal is PDCCH-DMRS, the frequency domain resource for transmitting the PDCCH-DMRS is configured according to the CCE and the aggregation level thereof, and the L groups of sub-resources are determined for the discontinuous mapping type according to the mapping type from the first reference signal to the frequency domain resource.
For details that are not specifically detailed in the embodiments of the present application, reference may be made to the description of the embodiments above, and details are not repeated in the embodiments of the present application.
In the method described in fig. 14, finer channel quality information is provided through finer-grained channel quality measurement and CSI reporting, so that the network device can perform efficient data transmission on resources with better channel quality and reallocate resources with poorer channel quality, thereby improving the spectrum efficiency.
Fig. 15 is another method for reporting channel state information according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:
step S1501: the terminal equipment acquires a CSI reporting mode, wherein the CSI reporting mode comprises the CSI reporting by using a reference signal.
Step S1502: the terminal device sends the target CSI to the network device, wherein the target CSI is determined according to L CSI, the S-th CSI is measured according to a first reference signal transmitted on an S-th group of sub-resources, the S-th group of sub-resources is one of L groups of sub-resources used for transmitting the first reference signal, L is determined according to the number of frequency domain resources corresponding to the first reference signal, and the L groups of sub-resources are determined according to the mapping type from the first reference signal to the frequency domain resources.
For details that are not specifically detailed in the embodiments of the present application, reference may be made to the description of the embodiments above, and details are not repeated in the embodiments of the present application.
In the method described in fig. 15, CSI reporting is performed through finer granularity channel quality measurement and feedback, so as to provide finer channel quality information, and enable network devices to perform efficient data transmission on resources with better channel quality and to perform reallocation on resources with poorer channel quality, thereby improving spectrum efficiency.
The method of the embodiments of the present application is explained in detail above, and the related apparatus of the embodiments of the present application is provided below.
Fig. 16 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention, where the communication apparatus is configured to perform the steps performed by the terminal device in the method embodiments corresponding to fig. 1 to fig. 15, and the communication apparatus may include:
the processing unit 1601 is configured to acquire a CSI reporting manner, where the CSI reporting manner includes measuring and reporting CSI using a first reference signal and a second reference signal, where the first reference signal and the second reference signal are of different types, and the first reference signal is a demodulation reference signal.
A sending unit 1602, configured to send a third CSI and a fourth CSI to a network device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fourth CSI is measured according to a reference signal transmitted on a second frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the second frequency-domain resource is a frequency-domain resource outside the first frequency-domain resource in a partial bandwidth BWP, and the BWP is one or more activated frequency-domain resource sets configured by the network device and used for data transmission with a terminal device.
In another embodiment, the processing unit 1601 is configured to obtain a CSI reporting manner, where the CSI reporting manner includes performing CSI measurement and reporting by using a first reference signal and a second reference signal, where types of the first reference signal and the second reference signal are different, and the first reference signal is a demodulation reference signal.
A sending unit 1602, configured to send a third CSI, a fifth CSI, and a sixth CSI to a network device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the third frequency-domain resource is a frequency-domain resource with a frequency that is smaller than the first frequency-domain resource in a partial bandwidth BWP, the fourth frequency-domain resource is a frequency-domain resource with a frequency that is larger than the first frequency-domain resource in the BWP, and the BWP is one or more activated frequency-domain resource sets configured by the network device for data transmission with a terminal device.
It should be noted that details that are not mentioned in the embodiment corresponding to fig. 16 and specific implementation manners of the steps executed by each unit may refer to the embodiments shown in fig. 1 to fig. 15 and the foregoing details, and are not described again here.
Fig. 17 is a schematic structural diagram of a communication apparatus according to another embodiment of the present invention, where the communication apparatus is configured to perform the steps performed by the network device in the method embodiments corresponding to fig. 1 to fig. 15, and the communication apparatus may include:
a receiving unit 1701, configured to receive a third CSI and a fourth CSI from a terminal device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fourth CSI is measured according to a reference signal transmitted on a second frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to a first reference signal, the second frequency-domain resource is a frequency-domain resource in a partial bandwidth BWP, the BWP is one or more activated frequency-domain resource sets configured by a network device for data transmission with the terminal device, the first reference signal and the second reference signal are of different types, and the first reference signal is a demodulation reference signal.
A processing unit 1702, configured to send data to the terminal device according to the third CSI and the fourth CSI.
In another embodiment, the receiving unit 1701 is configured to receive a third CSI, a fifth CSI and a sixth CSI from the terminal device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to a first reference signal, the third frequency-domain resource is a frequency-domain resource with a frequency smaller than the first frequency-domain resource in a first fractional bandwidth BWP, the fourth frequency-domain resource is a frequency-domain resource with a frequency larger than the first frequency-domain resource in the BWP, the BWP is one or more activated sets of frequency-domain resources configured by the network device for data transmission with the terminal device, and the first reference signal and the second reference signal are of different types, the first reference signal is a demodulation reference signal.
A processing unit 1702, configured to send data to a terminal device according to the third CSI, the fifth CSI, and the sixth CSI.
It should be noted that details that are not mentioned in the embodiment corresponding to fig. 17 and specific implementation manners of the steps executed by each unit may refer to the embodiments shown in fig. 1 to fig. 15 and the foregoing details, and are not described again here.
In one implementation, the relevant functions implemented by the respective units in fig. 16, 17 may be implemented in combination with a processor and a communication interface. Fig. 18 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention, where the communication apparatus includes a processor 1801, a memory 1802, and a communication interface 1803, and the processor 1801, the memory 1802, and the communication interface 1803 are connected through one or more communication buses.
The processor 1801 is configured to support the communication device to perform the methods described in fig. 1-15. The processor 1801 may be a Central Processing Unit (CPU), a Network Processor (NP), a hardware chip, or any combination thereof.
The memory 1802 is used for storing program codes and the like. Memory 1802 may include volatile memory (volatile memory), such as Random Access Memory (RAM); the memory 1802 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD), or a solid-state drive (SSD); memory 1802 may also include a combination of the above types of memory.
Communication interface 1803 is used to receive and transmit data, e.g., communication interface 1803 is used to transmit CSI.
In an embodiment of the present invention, the communication device includes a plurality of communication interfaces, wherein a communication interface for transmitting data and a communication interface for receiving data may not be the same communication interface.
The processor 1801 may call program code stored in the memory 1802 to perform the following:
acquiring a CSI reporting mode, wherein the CSI reporting mode comprises measuring and reporting CSI by using a first reference signal and a second reference signal, the types of the first reference signal and the second reference signal are different, and the first reference signal is a demodulation reference signal.
Sending, by a communication interface 1803, a third CSI and a fourth CSI to a network device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fourth CSI is measured according to a reference signal transmitted on a second frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the second frequency-domain resource is a frequency-domain resource outside the first frequency-domain resource in a partial bandwidth BWP, and the BWP is one or more activated frequency-domain resource sets configured by the network device and used for data transmission with a terminal device.
In another embodiment, the processor 1801 may call program code stored in the memory 1802 to perform the following:
acquiring a CSI reporting mode, wherein the CSI reporting mode comprises measuring and reporting CSI by using a first reference signal and a second reference signal, the types of the first reference signal and the second reference signal are different, and the first reference signal is a demodulation reference signal.
Sending a third CSI, a fifth CSI and a sixth CSI to a network device through a communication interface 1803, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the third frequency-domain resource is a frequency-domain resource whose frequency is smaller than that of the first frequency-domain resource in a partial bandwidth BWP, the fourth frequency-domain resource is a frequency-domain resource whose frequency is greater than that of the first frequency-domain resource in the BWP, and the BWP is one or more activated frequency-domain resource sets configured by the network device for data transmission with a terminal device.
In another embodiment, the processor 1801 may call program code stored in the memory 1802 to perform the following:
receiving, by a communication interface 1803, a third CSI and a fourth CSI from a terminal device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fourth CSI is measured according to a reference signal transmitted on a second frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to a first reference signal, the second frequency-domain resource is a frequency-domain resource in a partial bandwidth BWP, the BWP is one or more activated frequency-domain resource sets configured by a network device for data transmission with the terminal device, the first reference signal and the second reference signal are of different types, and the first reference signal is a demodulation reference signal.
And sending data to the terminal equipment according to the third CSI and the fourth CSI.
In another embodiment, the processor 1801 may call program code stored in the memory 1802 to perform the following:
receiving, by a communication interface 1803, third CSI, fifth CSI and sixth CSI from a terminal device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to a first reference signal, the third frequency-domain resource is a frequency-domain resource with a frequency smaller than that of the first frequency-domain resource in a BWP of a first partial bandwidth, the fourth frequency-domain resource is a frequency-domain resource with a frequency larger than that of the first frequency-domain resource in the BWP, the BWP is one or more activated frequency-domain resource sets configured by a network device for data transmission with the terminal device, and the first reference signal and the second reference signal are of different types, the first reference signal is a demodulation reference signal.
And sending data to terminal equipment according to the third CSI, the fifth CSI and the sixth CSI.
It should be noted that details that are not mentioned in the embodiment corresponding to fig. 18 and specific implementation manners of steps executed by each device may refer to the embodiments shown in fig. 1 to fig. 15 and the foregoing details, and are not described again here.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or an optical medium, such as a DVD; it may also be a semiconductor medium, such as a Solid State Disk (SSD).
In the embodiments of the present application, unless otherwise specified or conflicting with respect to logic, the terms and descriptions in different embodiments are consistent and may be mutually referenced, and the technical features in different embodiments may be combined to form a new embodiment according to their inherent logic relationship.
In the present application, "a plurality" means two or more. In the formula of the present application, the character "/" indicates that the preceding and following related objects are in a relationship of "division".
It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic.

Claims (14)

1. A method for reporting CSI (channel State information), is characterized in that the method comprises the following steps:
acquiring a CSI reporting mode, wherein the CSI reporting mode comprises measuring and reporting CSI by using a first reference signal and a second reference signal, the types of the first reference signal and the second reference signal are different, and the first reference signal is a demodulation reference signal;
the method includes sending a third CSI and a fourth CSI to a network device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, where the fourth CSI is measured according to a reference signal transmitted on a second frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the second frequency-domain resource is a frequency-domain resource other than the first frequency-domain resource in a partial bandwidth BWP, and the BWP is one or more activated frequency-domain resource sets configured by the network device for data transmission with a terminal device.
2. A method for reporting CSI (channel State information), is characterized in that the method comprises the following steps:
acquiring a CSI reporting mode, wherein the CSI reporting mode comprises measuring and reporting CSI by using a first reference signal and a second reference signal, the types of the first reference signal and the second reference signal are different, and the first reference signal is a demodulation reference signal;
the method includes sending third CSI, fifth CSI and sixth CSI to a network device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to the first reference signal, the third frequency-domain resource is a frequency-domain resource whose frequency is smaller than that of the first frequency-domain resource in a partial bandwidth BWP, the fourth frequency-domain resource is a frequency-domain resource whose frequency is larger than that of the first frequency-domain resource in the BWP, and the BWP is one or more activated frequency-domain resource sets configured by the network device for data transmission with a terminal device.
3. The method according to claim 1 or 2, wherein the third CSI is measured from a reference signal transmitted on the first frequency-domain resource, and specifically comprises:
the third CSI is measured from the first reference signal on a condition that only the first reference signal is transmitted on the first frequency-domain resource.
4. The method according to claim 1 or 2, wherein the third CSI is measured from a reference signal transmitted on the first frequency-domain resource, and specifically comprises:
the third CSI is target CSI determined according to seventh CSI measured according to the first reference signal transmitted on the first frequency-domain resource and eighth CSI measured according to the second reference signal transmitted on the first frequency-domain resource, under the condition that the first reference signal and the second reference signal are transmitted on the first frequency-domain resource.
5. The method of claim 4, wherein the third CSI is a target CSI determined from a seventh CSI and an eighth CSI, and specifically comprises:
and taking the CSI with a larger CQI value in a third Channel Quality Indicator (CQI) and a fourth CQI as the target CSI, wherein the third CQI is the CQI in the seventh CSI, and the fourth CQI is the CQI in the eighth CSI.
6. A method for reporting CSI (channel State information), is characterized in that the method comprises the following steps:
receiving third CSI and fourth CSI from a terminal device, where the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fourth CSI is measured according to a reference signal transmitted on a second frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to a first reference signal, the second frequency-domain resource is a frequency-domain resource other than the first frequency-domain resource in a partial bandwidth BWP, the BWP is one or more activated frequency-domain resource sets configured by a network device for data transmission with the terminal device, the first reference signal and the second reference signal are of different types, and the first reference signal is a demodulation reference signal;
and sending data to the terminal equipment according to the third CSI and the fourth CSI.
7. A method for reporting CSI (channel State information), is characterized in that the method comprises the following steps:
receiving third CSI, fifth CSI and sixth CSI from a terminal device, wherein the third CSI is measured according to a reference signal transmitted on a first frequency-domain resource, the fifth CSI is measured according to a reference signal transmitted on a third frequency-domain resource, the sixth CSI is measured according to a reference signal transmitted on a fourth frequency-domain resource, the first frequency-domain resource is a frequency-domain resource corresponding to a first reference signal, the third frequency-domain resource is a frequency-domain resource with a frequency smaller than the first frequency-domain resource in a first partial bandwidth BWP, the fourth frequency-domain resource is a frequency-domain resource with a frequency larger than the first frequency-domain resource in the BWP, the BWP is one or more activated frequency-domain resource sets configured by a network device for data transmission with the terminal device, and the first reference signal and the second reference signal are of different types, the first reference signal is a demodulation reference signal;
and sending data to the terminal equipment according to the third CSI, the fifth CSI and the sixth CSI.
8. The method according to claim 6 or 7, wherein the third CSI is measured from the reference signal transmitted on the first frequency-domain resource, and specifically comprises:
the third CSI is measured from the first reference signal on a condition that only the first reference signal is transmitted on the first frequency-domain resource.
9. The method according to claim 6 or 7, wherein the third CSI is measured from the reference signal transmitted on the first frequency-domain resource, and specifically comprises:
the third CSI is target CSI determined according to seventh CSI measured according to the first reference signal transmitted on the first frequency-domain resource and eighth CSI measured according to the second reference signal transmitted on the first frequency-domain resource, under the condition that the first reference signal and the second reference signal are transmitted on the first frequency-domain resource.
10. The method of claim 9, wherein the third CSI is a target CSI determined based on the seventh CSI and the eighth CSI, and specifically comprises:
and taking the CSI with a larger CQI value in a third Channel Quality Indicator (CQI) and a fourth CQI as the target CSI, wherein the third CQI is the CQI in the seventh CSI, and the fourth CQI is the CQI in the eighth CSI.
11. A communication apparatus, characterized in that the apparatus comprises means for implementing the method for reporting channel state information CSI as claimed in any one of claims 1 to 10.
12. A computer storage medium comprising, in combination,
the computer storage medium stores a computer program or instructions,
the program or instructions, when executed by a processor, cause the processor to perform the method of any of claims 1-10.
13. A communication device comprising a processor, the processor coupled with a memory,
the memory to store instructions;
the processor to execute instructions in the memory to cause the communication device to perform the method of any of claims 1 to 10.
14. A chip system, comprising a processor and interface circuitry, the interface circuitry coupled with the processor,
wherein the processor is for executing a computer program or instructions to implement the method of any one of claims 1 to 10;
the interface circuit is used for communicating with other modules outside the chip system.
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