Information reporting method and apparatus, and computer readable storage medium

Abstract

An information reporting method and apparatus, and a computer readable storage medium. The information reporting method comprises: acquiring a CSI report on the basis of a channel state information (CSI) reference signal transmitted in a first overlapping region, wherein the first overlapping region is a partial overlapping region of a first CSI sub-band and a first downlink sub-band; and reporting the CSI report. By using the solution, a terminal device can send a valid CSI report, and a network device can obtain the valid CSI report.

Description

Information reporting method and device, and computer-readable storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 11, 2023, with application number 202311015330.3 and invention name “Information reporting method and device, computer-readable storage medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of wireless communication technologies, and in particular to an information reporting method and device, and a computer-readable storage medium. Background Art

[0003] In existing time division multiplexing (TDD) systems, all frequency resources of a TDD carrier must transmit in the same direction at the same time, making it difficult to flexibly allocate uplink and downlink time slots for different frequency resources. With the diversification of data services, different services have different uplink and downlink transmission requirements, and a single uplink and downlink time slot allocation cannot meet the needs of different services.

[0004] Prior art has proposed a sub-band full-duplex transmission scheme. Network equipment (such as base stations) divides the same TDD carrier into different sub-bands in the frequency domain, and simultaneously performs uplink reception and downlink transmission on these sub-bands. For terminal devices, half-duplex mode is supported, with uplink transmission performed on the uplink sub-band or downlink reception performed on the downlink sub-band at a given time.

[0005] When using Channel State Information (CSI) subbands to report CSI reports, some CSI subbands may partially overlap with downlink subbands and partially overlap with uplink subbands or guard bands. For CSI subbands that partially overlap with downlink subbands, network devices cannot guarantee the validity of the obtained CSI reports, and terminal devices cannot determine the validity of the CSI measurement results.

[0006] Summary of the Invention

[0007] One of the objectives of the present invention is to provide an information reporting method, which enables a terminal device to send a valid CSI report.

[0008] In a first aspect, the present invention provides an information reporting method, comprising: obtaining a CSI report based on a channel state information CSI reference signal transmitted in a first overlapping area; the first overlapping area is a partial overlapping area between a first CSI subband and a first downlink subband; and reporting the CSI report.

[0009] When there is a first overlapping region between the first CSI subband and the first downlink subband, and a CSI reference signal is transmitted in the first overlapping region, the terminal device obtains a CSI report based on the CSI reference signal transmitted in the first overlapping region, and then reports the CSI report. In this way, the terminal device can obtain a valid CSI report and provide feedback.

[0010] Optionally, obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area includes: determining that the density of the CSI reference signal in the first overlapping area is not less than a preset density threshold, and the preset density threshold is associated with the CSI reference signal resource density; obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area.

[0011] Only when the density of CSI reference signals transmitted in the first overlapping region is high does the terminal device obtain a CSI report based on the CSI reference signals transmitted in the first overlapping region and then submit the CSI report. Due to the high density of CSI reference signals transmitted in the first overlapping region, the probability of including multiple CSI reference signals in the first overlapping region increases, and CSI reports can be obtained based on as many CSI reference signals as possible, further improving the effectiveness of the CSI report.

[0012] Optionally, obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area includes: determining that the number of physical resource blocks in the first overlapping area is not less than a first value, the first value is a positive integer, and the first value is less than the subband size of the first CSI subband; obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area.

[0013] Only when the number of physical resource blocks used to transmit CSI reference signals in the first overlapping region is relatively large does the terminal device obtain a CSI report based on the CSI reference signals transmitted in the first overlapping region and then submit the CSI report. Due to the large number of physical resource blocks in the first overlapping region, there is a high probability that the first overlapping region includes multiple CSI reference signals. Therefore, CSI reports can be obtained based on as many CSI reference signals as possible, further improving the effectiveness of the CSI report.

[0014] Optionally, the first value is the product of the subband size of the first CSI subband and a preset first coefficient.

[0015] Optionally, obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area includes: determining that the CSI reference signal resource density in the first overlapping area is not less than a second value, and the second value is associated with the CSI reference signal resource density of the first CSI subband; obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area.

[0016] When the CSI reference signal resource density in the first overlapping region is relatively high, there is a high probability that the first overlapping region includes multiple CSI reference signals. Therefore, the effectiveness of the CSI report can be improved with a high probability.

[0017] Optionally, the second value is the product of the CSI reference signal resource density of the first CSI subband and a preset second coefficient.

[0018] Optionally, obtaining a CSI report based on a channel state information CSI reference signal transmitted in the first overlapping area includes: obtaining the CSI report based on a measurement result corresponding to the CSI reference signal transmitted in the first overlapping area.

[0019] Optionally, obtaining the CSI report based on the channel state information CSI reference signal transmitted in the first overlapping area includes: determining that the sum of the number of physical resource blocks in the first overlapping area and the number of physical resource blocks in the second overlapping area is not less than a third value; obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area and the second overlapping area; wherein the third value is a positive integer, and the third value is associated with the subband size of the first CSI subband or the second subband; the second overlapping area is an overlapping area of ​​the second CSI subband and the second downlink subband, and there is an uplink subband between the second downlink subband and the first downlink subband.

[0020] Optionally, the third value is the product of the subband size of the first CSI subband or the second subband and a preset third coefficient.

[0021] Optionally, obtaining the CSI report based on the channel state information CSI reference signal transmitted in the first overlapping area includes: determining that the CSI reference signal resource density in the first overlapping area and the second overlapping area is not less than a fourth value; obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area and the second overlapping area; obtaining the CSI report; wherein the fourth value is associated with the CSI reference signal resource density of the first CSI subband or the second subband; the second overlapping area is the overlapping area of ​​the second CSI subband and the second downlink subband, and there is an uplink subband between the second downlink subband and the first downlink subband.

[0022] Optionally, the fourth value is the product of the CSI reference signal resource density of the first CSI subband or the second subband and a preset fourth coefficient.

[0023] Optionally, obtaining the CSI report based on the channel state information CSI reference signal transmitted in the first overlapping area includes: obtaining the CSI report based on the measurement results corresponding to the CSI reference signal in the first overlapping area and the measurement results corresponding to the CSI reference signal in the second overlapping area.

[0024] When the CSI reference signal in the first overlapping area and the CSI reference signal in the second overlapping area meet certain conditions, a CSI report is obtained based on the CSI reference signal in the first overlapping area and the CSI reference signal in the second overlapping area, which can effectively determine whether the CSI reference signal in the first overlapping area and / or the CSI reference signal in the second overlapping area is valid, and further determine whether the generated CSI report is valid.

[0025] The terminal device obtains a CSI report based on the CSI reference signal in the first overlapping region and the CSI reference signal in the second overlapping region. The terminal device may report the CSI report on the first CSI subband, the second CSI subband, or both the first and second CSI subbands.

[0026] Optionally, the information reporting method also includes: in response to satisfying a preset condition, generating the CSI report including invalid indication information, wherein the invalid indication information is used to indicate that the content of the CSI report is invalid; the preset condition includes at least one of the following: no CSI reference signal is transmitted in the first overlapping area, the density of the CSI reference signal in the first overlapping area is less than a preset density value, the physical resource blocks in the first overlapping area are less than a first value, the CSI reference signal resource density in the first overlapping area is less than a second value, the sum of the number of physical resource blocks in the first overlapping area and the number of physical resource blocks in the second overlapping area is less than a third value, and the CSI reference signal resource density in the first overlapping area and the second overlapping area is less than a fourth value.

[0027] If there are no physical resource blocks for transmitting CSI reference signals in the first overlapping region, or the number of physical resource blocks for transmitting CSI reference signals in the first overlapping region is small, or the total number of physical resource blocks for transmitting CSI reference signals in the first overlapping region and the second overlapping region is small, a CSI report including invalid indication information is generated to indicate to the network device that the CSI report is invalid. Thus, when there are no CSI reference signals or the number of CSI reference signals is small, the terminal device can determine that a valid CSI report cannot be obtained, and the network device will not schedule the terminal device based on the invalid CSI report.

[0028] In the second aspect, the present invention also provides an information reporting device, including: an acquisition unit, used to obtain a CSI report based on the channel state information CSI reference signal transmitted in the first overlapping area; the first overlapping area is a partial overlapping area between the first CSI subband and the first downlink subband; a reporting unit, used to report the CSI report.

[0029] In a third aspect, the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored, and when the computer program is run by a processor, the steps of any of the above-mentioned information reporting methods are executed.

[0030] In a fourth aspect, the present invention also provides another information reporting device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of any of the above-mentioned information reporting methods when running the computer program. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a flow chart of an information reporting method according to an embodiment of the present invention;

[0032] FIG2 is a schematic diagram of the positional relationship between a CSI subband and uplink and downlink subbands in an embodiment of the present invention;

[0033] FIG3 is a schematic diagram showing the positional relationship between another CSI subband and uplink and downlink subbands in an embodiment of the present invention;

[0034] FIG4 is a schematic diagram showing the positional relationship between another CSI subband and uplink and downlink subbands in an embodiment of the present invention;

[0035] FIG5 is a schematic structural diagram of an information reporting device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In the prior art, some CSI subbands partially overlap with downlink subbands. For CSI subbands that partially overlap with downlink subbands, the corresponding CSI reports are generally reported in two ways: Solution 1: CSI measurement and CSI report generation are still required for the overlapping portion of the CSI subband and the downlink subband; Solution 2: CSI measurement is not performed for the overlapping portion of the CSI subband and the uplink subband.

[0037] For example, CSI subband 1 partially overlaps with downlink subband 1, and CSI subband 1 occupies eight consecutive physical resource blocks, of which physical resource blocks 1 and physical resource blocks 2 overlap with downlink subband 1. If processing solution 1 is adopted, a CSI report is generated for CSI subband 1 based on the CSI reference signals in physical resource blocks 1 and 2. If processing solution 2 is adopted, no CSI report is generated for CSI subband 1, or an invalid CSI report is generated.

[0038] However, in Solution 1, there may be no CSI reference signal in the overlap between CSI subband 1 and the downlink subband, so the generated CSI report is essentially invalid. Regarding Solution 2, the network device cannot obtain the CSI report for CSI subband 1 or determine whether the CSI report is valid.

[0039] In this embodiment of the present invention, when a first overlapping region exists between the first CSI subband and the first downlink subband, and a CSI reference signal is transmitted in the first overlapping region, the terminal device obtains a CSI report based on the CSI reference signal transmitted in the first overlapping region, and then reports the CSI report. Thus, the terminal device can obtain and provide feedback on a valid CSI report.

[0040] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0041] The terminal device described in the embodiments of the present application is a device with wireless communication capabilities, and may also be referred to as a terminal, mobile station (MS), mobile terminal (MT), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, user equipment (UE), UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile device, wireless communication device, UE agent, or UE device. The UE can be fixed or mobile. It should be noted that the UE can support at least one wireless communication technology, such as LTE, NR, etc. Exemplarily, the UE may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an all-in-one computer, an in-vehicle terminal, a virtual reality (VR) UE, an augmented reality (AR) UE, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a wearable device, a UE in a future mobile communication network, or a UE in a future evolved public mobile land network (PLMN), etc. In some embodiments of the present application, the UE may also be a device with transceiver functions, such as a chip system, wherein the chip system may include a chip and may also include other discrete devices.

[0042] In the embodiment of the present application, a network device is a device that provides wireless communication functions for a terminal device, and may also be referred to as a radio access network (RAN) device, an access network element, an access network device, etc. The network device may support at least one wireless communication technology, such as LTE, NR, etc. For example, the network device includes, but is not limited to: a next-generation base station (gNB) in 5G, an evolved node B (eNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home evolved node B, or home node B, HNB), a baseband unit (BBU), a transmitting and receiving point (TRP), a transmitting point (TP), a mobile switching center, etc. The network device may also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an access point, an on-board device, a terminal device, a wearable device, a network device in future mobile communications, or a network device in a future evolved PLMN. In some embodiments, the network device may also be a device that provides wireless communication functions for a terminal device, such as a chip system. For example, the chip system may include a chip and may also include other discrete devices.

[0043] In some embodiments, the network device may also communicate with an Internet Protocol (IP) network, such as the Internet, a private IP network, or other data networks.

[0044] An embodiment of the present invention provides an information reporting method, which is described in detail below through specific steps with reference to FIG1 .

[0045] In a specific implementation, the information reporting method described in steps 101 to 102 below can be executed by a chip with data processing capabilities in a terminal device, or by a chip module with data processing capabilities in a terminal device, or by the terminal device. The following description uses the information reporting method described in steps 101 to 102 below as an example.

[0046] Step 101: Acquire a CSI report based on a CSI reference signal transmitted in a first overlapping region.

[0047] Step 102: Send a CSI report.

[0048] In a specific implementation, the subband size of the CSI subband can be configured by the network device through high-layer signaling (such as RRC signaling, MAC CE, etc.) Specifically, the subband size can be determined by the parameter subbandSize in the IE CSI-ReportConfig.

[0049] For example, according to the existing protocol, the number of physical resource blocks of the partial bandwidth (BandWidth Part, BWP) is 24, the starting position of BWP is 0, and CSI-ReportingBand indicates subbands6 (i.e., 6 subbands), then the subband size is 24 / 6=4, that is, the BWP includes 6 subbands, and each subband occupies 4 physical resource blocks.

[0050] In the embodiment of the present invention, the first CSI subband may be a subband for reporting CSI reports. The first downlink subband may be a subband for transmitting downlink data. The first CSI subband and the first downlink subband may partially overlap.

[0051] Figure 2 shows a schematic diagram of the positional relationship between CSI subbands and uplink and downlink subbands in an embodiment of the present invention. In Figure 2, CSI subband 1 completely overlaps with downlink subband 1, CSI subband 2 partially overlaps with downlink subband 1, and a guard band (GB) is provided between downlink subband 1 and uplink subband 1.

[0052] As shown in FIG. 2 , the CSI subband 2 may be regarded as the first CSI subband, and the downlink subband 1 may be regarded as the first downlink subband.

[0053] In this embodiment of the present invention, the first overlapping region may include one or more physical resource blocks. If the first overlapping region includes at least one physical resource block for transmitting a CSI reference signal, that is, a CSI reference signal is transmitted in the first overlapping region, the terminal device may obtain a CSI report.

[0054] Specifically, the terminal device may perform corresponding measurement operations based on the CSI reference signal transmitted in the first overlapping region to obtain a CSI measurement result. The terminal device may generate a CSI report based on the CSI measurement result and send the CSI report.

[0055] [Corrected 19.09.2024 according to Rule 26] Referring to Figure 2, the subband size of CSI subband 2 is 4, that is, the first CSI subband occupies 4 physical resource blocks, namely PRB1 to PRB4, where the first overlapping area includes PRB1 to PRB3.

[0056] In a specific implementation, some physical resource blocks in the first overlapping area can be used to transmit CSI reference signals, or all physical resource blocks in the first overlapping area can be used to transmit CSI reference signals, or all physical resource blocks in the first overlapping area are not used to transmit CSI reference signals.

[0057] 2 , in some examples, PRB1 and PRB3 are used to transmit CSI reference signals. In other examples, only PRB2 is used to transmit CSI reference signals. In still other embodiments, all of PRB1 to PRB3 are used to transmit CSI reference signals.

[0058] Specifically, the specific process of the terminal device obtaining the CSI report based on the CSI reference signal can refer to the existing protocol and will not be explained in detail here.

[0059] In a specific implementation, there may be no physical resource blocks for transmitting the CSI reference signal in the first overlapping region, that is, the first overlapping region does not transmit the CSI reference signal.

[0060] Referring to Figure 3, another schematic diagram illustrating the positional relationship between CSI subbands and uplink and downlink subbands in an embodiment of the present invention is provided. In Figure 3, CSI subband 1 completely overlaps with downlink subband 1, and CSI subband 2 (i.e., the first CSI subband) partially overlaps with downlink subband 1 (i.e., the first downlink subband). A guard band (GB) is provided between downlink subband 1 and uplink subband 1. The subband size of CSI subband 2 is 4, namely PRB1 to PRB4. The first overlapping region includes PRB1, in which no CSI reference signal is transmitted.

[0061] In this scenario, the terminal device may generate a CSI report including invalid indication information and send the CSI report. The invalid indication information may be used to indicate that the CSI report is invalid. The network device receives the CSI report and obtains the invalid indication information therefrom, thereby determining that the CSI report is an invalid CSI report.

[0062] In some embodiments, the invalid indication information may be represented by a special value or an arbitrary value. For example, if the contents of the CSI report are all 0s or all 1s, it indicates that the CSI report is invalid.

[0063] As shown in FIG3 , the content of the CSI report reported by the terminal device is all 0s, indicating that the CSI report is an invalid CSI report.

[0064] In an embodiment of the present invention, if the terminal device determines that the density of the CSI reference signal in the first overlapping area is not less than a preset density threshold, a CSI report can be obtained based on the CSI reference signal transmitted in the first overlapping area.

[0065] In some embodiments, the terminal device may generate a CSI report based on a measurement result corresponding to a CSI reference signal transmitted in the first overlapping region.

[0066] In a specific implementation, the preset density threshold may be associated with a CSI reference signal resource density predefined in an existing protocol, and the CSI reference signal resource density may be determined by a density set in a CSI reference signal resource mapping (CSI-RS-resource mapping).

[0067] In some embodiments, the preset density threshold may be a density set in CSI-RS-resourcemapping.

[0068] It is understood that the density set in the CSI-RS-resourcemapping can refer to the number of CSI reference signals in a physical resource block. Density can be a positive integer or a decimal. For example, a density value of 3 indicates that there are 3 CSI reference signals in a physical resource block; a density value of 0.5 indicates that there is one CSI reference signal in two adjacent physical resource blocks.

[0069] In a specific implementation, the density of the CSI reference signals in the first overlapping region is the quotient of the number of CSI reference signals in the first overlapping region and the total number of physical resource blocks in the first overlapping region.

[0070] As shown in FIG2 , the number of CSI reference signals in the first overlapping region is 2, and the total number of physical resource blocks in the first overlapping region is 3, so the CSI reference signal resource density in the first overlapping region is 2 / 3.

[0071] As shown in Figure 2, a specific example is provided in which a network device configures a preset density threshold of 0.5. In the first overlapping region, PRB1 and PRB3 are each configured to include one CSI reference signal, meaning that the first overlapping region includes two CSI reference signals. Consequently, the terminal device determines that the density of CSI reference signals in the first overlapping region is 2 / 3, which is greater than the preset density threshold.

[0072] The terminal device generates a CSI report based on all CSI reference signals in the first overlapping area and sends the generated CSI report to the network device on the first CSI subband.

[0073] In conjunction with Figure 2, another specific example is provided. The network device configures a preset density threshold of 0.5. In the first overlapping region, PRB2 is set to transmit the CSI reference signal, and PRB2 includes one CSI reference signal. As a result, the terminal device determines that the density of CSI reference signals in the first overlapping region is 1 / 3, which is less than the preset density threshold. The terminal device generates a CSI report including invalid indication information and sends the generated CSI report on the first CSI subband.

[0074] In an embodiment of the present invention, if the terminal device determines that the number of physical resource blocks in the first overlapping region is not less than a first value, a CSI report may be obtained based on the CSI reference signal transmitted in the first overlapping region. In some embodiments, the first value is a positive integer and is less than a subband size of the first CSI subband.

[0075] In some embodiments, the first value may be the product of the subband size of the first CSI subband and a preset first coefficient. The preset first coefficient may be sent by the network device to the terminal device via higher-layer signaling (e.g., RRC signaling, MAC CE, etc.). The preset first coefficient may also be a default value and is known to the terminal device.

[0076] In other embodiments, the first value may be a preset value, and the preset value may also be sent by the network device to the terminal device through high-layer signaling.

[0077] To provide a specific example, the terminal device determines that the subband size of the first CSI subband is 4, and the preset first value is 2.

[0078] As shown in Figure 2, the first overlapping region includes three physical resource blocks (PRBs 1 to 3). Therefore, the number of physical resource blocks included in the first overlapping region is greater than the first value. The terminal device can generate a CSI report based on the CSI reference signal transmitted in the first overlapping region. The terminal device sends the generated CSI report to the network device on the first CSI subband.

[0079] To provide another specific example, the terminal device determines that the subband size of the first CSI subband is 4, and the preset first coefficient is 0.5, then the first value obtained is 2.

[0080] As shown in Figure 3, the first overlapping region includes one physical resource block (PRB1), so the number of physical resource blocks included in the first overlapping region is less than the first value. Therefore, the terminal device generates and sends a CSI report including invalid indication information.

[0081] Specifically, the terminal device sends the generated CSI report containing invalid indication information to the network device on the first CSI subband.

[0082] In an embodiment of the present invention, if the terminal device determines that the density of the CSI reference signal in the first overlapping area is not less than the second value, the CSI report can be obtained based on the CSI reference signal transmitted in the first overlapping area.

[0083] In a specific implementation, the second value may be associated with the CSI reference signal resource density of the first CSI subband. Specifically, the second value may be the product of the CSI reference signal resource density of the first CSI subband and a second coefficient. The second coefficient may be sent by the network device to the terminal device via higher-layer signaling. The preset second coefficient may also be a default value known to the terminal device.

[0084] Specifically, the second value may be less than or equal to the CSI reference signal resource density of the first CSI subband, that is, the second coefficient may be less than or equal to 1.

[0085] To provide a specific example, the terminal device determines that the subband size of the first CSI subband is 4, the CSI reference signal resource density of the first CSI subband is 0.5, and the preset second value is 0.5.

[0086] As shown in Figure 2, the first overlapping region includes three physical resource blocks (PRB1 to PRB3), PRB1 and PRB3 are used to transmit CSI reference signals, and PRB1 and PRB3 each include one CSI reference signal. Therefore, the CSI reference signal resource density in the first overlapping region is 2 / 3. Thus, the terminal device determines that the CSI reference signal resource density in the first overlapping region is greater than the second value. The terminal device can generate a CSI report based on the CSI reference signal transmitted in the first overlapping region.

[0087] To provide another specific example, the terminal device determines that the subband size of the first CSI subband is 4, the CSI reference signal resource density of the first CSI subband is 0.5, and the preset second coefficient is 1, so the second value is determined to be 0.5.

[0088] 3 , the first overlapping region includes one physical resource block (PRB1), and no CSI reference signal is transmitted in PRB1, that is, the CSI reference signal resource density in the first overlapping region is 0. Therefore, the terminal device determines that the CSI reference signal resource density in the first overlapping region is less than the second value, and the terminal device generates and sends a CSI report including invalid indication information.

[0089] In the embodiment of the present invention, there may also be a scenario where multiple subbands are reported jointly. Referring to Figure 4, a schematic diagram of the position relationship between a CSI subband and an uplink and downlink subband in an embodiment of the present invention is provided.

[0090] In Figure 4, CSI subband 1 completely overlaps with downlink subband 1, and CSI subband 2 partially overlaps with downlink subband 1. A guard bandwidth (GB) is provided between downlink subband 1 and uplink subband 1, and a guard bandwidth is provided between downlink subband 2 and uplink subband 1. There is a first overlapping region (PRB1 to PRB3) between CSI subband 2 and downlink subband 1, and a second overlapping region (PRB8) between CSI subband 3 and downlink subband 2.

[0091] For the above scenario, in an embodiment of the present invention, if the terminal device determines that the sum of the number of physical resource blocks in the first overlapping area and the number of physical resource blocks in the second overlapping area is not less than a third value, then a CSI report can be obtained based on the CSI reference signal transmitted in the first overlapping area and the CSI reference signal transmitted in the second overlapping area.

[0092] In a specific implementation, the third value may be an integer and may be associated with the subband size of the first CSI subband; alternatively, the third value may be associated with the subband size of the second subband. Specifically, the third value may be the product of the subband size of the first CSI subband and a preset third coefficient, or the third value may be the product of the subband size of the second CSI subband and a preset third coefficient. The subband size of the first CSI subband may be the same as or different from the subband size of the second CSI subband.

[0093] In a specific implementation, the third coefficient may be sent from the network device to the terminal device via a high-layer signaling. The preset third coefficient may also be a default value and known to the terminal device.

[0094] If the sum of the number of physical resource blocks in the first overlapping region and the number of physical resource blocks in the second overlapping region is not less than a third value, the terminal device may obtain a CSI report based on the CSI reference signal in the first overlapping region and the CSI reference signal in the second overlapping region. The terminal device may report the obtained CSI report using the first CSI subband, or report the obtained CSI report using the second CSI subband, or report the obtained CSI report in both the first CSI subband and the second CSI subband.

[0095] On the contrary, if the sum of the number of physical resource blocks in the first overlapping area and the number of physical resource blocks in the second overlapping area is less than the third value, the terminal device can generate and send a CSI report including invalid indication information.

[0096] To provide a specific example, the terminal device determines that the subband size of the first CSI subband is 4, and the preset third value is 2.

[0097] As shown in Figure 4, the first overlapping region includes three physical resource blocks (PRBs 1 to 3), and the second overlapping region includes one physical resource block (PRB 8). PRB 2 in the first overlapping region is used to transmit CSI reference signals, and PRB 8 in the second overlapping region is used to transmit CSI reference signals.

[0098] The sum of the number of physical resource blocks in the first overlapping region and the number of physical resource blocks in the second overlapping region is equal to 4, which is greater than the preset third value. As a result, the terminal device generates a CSI report based on the CSI reference signal transmitted in PRB2 and the CSI reference signal transmitted in PRB8.

[0099] To provide another specific example, the terminal device determines that the subband size of the second CSI subband is 8, and the preset third coefficient is 1, so the third value is 8. It is assumed that the first overlapping area includes 3 physical resource blocks, the second overlapping area includes 1 physical resource block, and the sum of the number of physical resource blocks in the first overlapping area and the number of physical resource blocks in the second overlapping area is less than the third value, then the terminal device generates and sends a CSI report including invalid indication information. The terminal device can use the first CSI subband to report the above-mentioned CSI report including invalid indication information to the network device; or, the terminal device can use the second CSI subband to report the above-mentioned CSI report including invalid indication information to the network device; or, the terminal device can report the above-mentioned CSI report including invalid indication information on both the first CSI subband and the second CSI subband.

[0100] In an embodiment of the present invention, if the terminal device determines that the CSI reference signal resource density of the first overlapping area and the second overlapping area is not less than the fourth value, the terminal device can determine the CSI report based on the CSI reference signal in the first overlapping area and the CSI reference signal in the second overlapping area.

[0101] Specifically, the number of CSI reference signals in the first overlapping area is added to the number of CSI reference signals in the second overlapping area to obtain a first sum; the number of physical resource blocks in the first overlapping area is added to the number of physical resource blocks in the second overlapping area to obtain a second sum; the quotient of the first sum and the second sum is calculated, and the quotient obtained is: the CSI reference signal resource density of the first overlapping area and the second overlapping area.

[0102] For example, the number of physical resource blocks in the first overlapping area is 3, the number of CSI reference signals in the first overlapping area is 2, the number of physical resource blocks in the second overlapping area is 1, and the number of CSI reference signals in the second overlapping area is 0, then the CSI reference signal resource density of the first overlapping area and the second overlapping area is: (2+0) / (1+3)=0.5.

[0103] For another example, the number of physical resource blocks in the first overlapping area is 3, the number of CSI reference signals in the first overlapping area is 2, the number of physical resource blocks in the second overlapping area is 1, and the number of CSI reference signals in the second overlapping area is 1, then the CSI reference signal resource density of the first overlapping area and the second overlapping area is: (2+1) / (1+3)=0.75.

[0104] In a specific implementation, the fourth coefficient may be sent from the network device to the terminal device via a high-layer signaling. The preset fourth coefficient may also be a default value and known to the terminal device.

[0105] To provide a specific example, the terminal device determines that the CSI reference signal resource density of the first CSI subband is 0.5, and the preset fourth value is 0.5.

[0106] As shown in Figure 4, the first overlapping region includes three physical resource blocks (PRBs 1 to 3), and the second overlapping region includes one physical resource block (PRB 8). PRB 2 in the first overlapping region is used to transmit the CSI reference signal, and there is only one CSI reference signal within PRB 2; PRB 8 in the second overlapping region is used to transmit the CSI reference signal, and there is only one CSI reference signal within PRB 8. In other words, the CSI reference signal resource density in the first overlapping region is 1 / 3, and the CSI reference signal resource density in the second overlapping region is 1.

[0107] Therefore, the CSI reference signal resource density in the first overlapping area and the second overlapping area is (1+1) / (1+3)=0.5, which is equal to the fourth value. Therefore, the terminal device generates a CSI report based on the CSI reference signal transmitted in PRB2 and the CSI reference signal transmitted in PRB8.

[0108] To provide another specific example, the terminal device determines that the CSI reference signal resource density of the second CSI subband is 0.5, and the preset fourth coefficient is 1, so the fourth value is 0.5.

[0109] As shown in Figure 4, the first overlapping region includes three physical resource blocks (PRBs 1 to 3), and the second overlapping region includes one physical resource block (PRB 8). PRB 2 in the first overlapping region is set to transmit the CSI reference signal, and there is only one CSI reference signal within PRB 2. There are no physical resource blocks used to transmit CSI reference signals in the second overlapping region. In other words, the CSI reference signal resource density in the first overlapping region is 1 / 3, while the CSI reference signal resource density in the second overlapping region is 0.

[0110] Therefore, the CSI reference signal resource density in the first overlapping area and the second overlapping area is (1+0) / (1+3)=0.25, which is less than the fourth value, so the terminal device generates and sends a CSI report including invalid indication information.

[0111] In a specific implementation, the terminal device sends the CSI report to the network device, and the network device schedules the terminal device accordingly based on the received CSI report.

[0112] Specifically, when there is a first CSI subband and a second CSI subband, the terminal device can use the first CSI subband to report the CSI report to the network device; or, the terminal device can use the second CSI subband to report the CSI report to the network device; or, the terminal device can report the CSI report on both the first CSI subband and the second CSI subband.

[0113] In summary, in this embodiment of the present invention, when a first overlapping region exists between the first CSI subband and the first downlink subband, and a CSI reference signal is transmitted in the first overlapping region, the terminal device obtains a CSI report based on the CSI reference signal transmitted in the first overlapping region, and then reports the CSI report. Thus, the terminal device can obtain and provide feedback on a valid CSI report.

[0114] 5 , an information reporting device 50 according to an embodiment of the present invention is shown, including: an acquisition unit 501 and a reporting unit 502, wherein:

[0115] An acquiring unit 501 is configured to acquire a CSI report based on a channel state information CSI reference signal transmitted in a first overlapping region, wherein the first overlapping region is a partial overlapping region between a first CSI subband and a first downlink subband;

[0116] The reporting unit 502 is configured to report the CSI report.

[0117] In a specific implementation, the specific execution process of the above-mentioned acquisition unit 501 and reporting unit 502 can correspond to step 101 to step 102, which will not be repeated here.

[0118] In a specific implementation, the above-mentioned information reporting device 50 can correspond to a chip with a data processing function in a terminal device, or correspond to a chip module with a data processing function in a terminal device, or correspond to the terminal device.

[0119] In specific implementations, the modules / units included in the various devices and products described in the above embodiments may be software modules / units or hardware modules / units, or may be partially software modules / units and partially hardware modules / units.

[0120] For example, for each device or product applied to or integrated into a chip, each module / unit contained therein may be implemented in the form of hardware such as circuits, or at least some of the modules / units may be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits; for each device or product applied to or integrated into a chip module, each module / unit contained therein may be implemented in the form of hardware such as circuits, and different modules / units may be located in the same component (such as a chip, circuit module, etc.) or different components of the chip module, or at least some of the modules / units may be implemented in the form of software programs. The element can be implemented in the form of a software program, which runs on the processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in the terminal, the various modules / units contained therein can be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or different components in the terminal, or, at least some modules / units can be implemented in the form of a software program, which runs on the processor integrated inside the terminal, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits.

[0121] An embodiment of the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored. When the computer program is run by a processor, the steps of the information reporting method provided in any of the above embodiments are executed.

[0122] An embodiment of the present invention further provides an information reporting device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, the processor executes the steps of the information reporting method provided in any of the above embodiments.

[0123] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, which may include: ROM, RAM, disk or CD, etc.

[0124] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. An information reporting method, characterized in that: include: Acquire a CSI report based on a channel state information CSI reference signal transmitted in a first overlapping area; the first overlapping area is a partial overlapping area between a first CSI subband and a first downlink subband; Report the CSI report.

2. The information reporting method according to claim 1, characterized in that: The acquiring the CSI report based on the CSI reference signal transmitted in the first overlapping area includes: Determine that a density of CSI reference signals in the first overlapping area is not less than a preset density threshold, where the preset density threshold is associated with a CSI reference signal resource density; The CSI report is obtained based on a CSI reference signal transmitted in the first overlapping area.

3. The information reporting method according to claim 1, characterized in that: The acquiring the CSI report based on the CSI reference signal transmitted in the first overlapping area includes: Determine that the number of physical resource blocks in the first overlapping area is not less than a first value, where the first value is a positive integer and the first value is less than a subband size of the first CSI subband; The CSI report is obtained based on a CSI reference signal transmitted in the first overlapping area.

4. The information reporting method according to claim 3, characterized in that: The first value is the product of the subband size of the first CSI subband and a preset first coefficient.

5. The information reporting method according to claim 1, characterized in that: The acquiring the CSI report based on the CSI reference signal transmitted in the first overlapping area includes: Determine that a CSI reference signal resource density in the first overlapping area is not less than a second value, where the second value is associated with a CSI reference signal resource density of the first CSI subband; The CSI report is obtained based on a CSI reference signal transmitted in the first overlapping area.

6. The information reporting method according to claim 5, characterized in that: The second value is the product of the CSI reference signal resource density of the first CSI subband and a preset second coefficient.

7. The information reporting method according to any one of claims 2 to 6, characterized in that: The acquiring a CSI report based on a channel state information CSI reference signal transmitted in the first overlapping region includes: The CSI report is obtained based on a measurement result corresponding to the CSI reference signal transmitted in the first overlapping area.

8. The information reporting method according to claim 1, characterized in that: The acquiring a CSI report based on a channel state information CSI reference signal transmitted in the first overlapping region includes: Determine that the sum of the number of physical resource blocks in the first overlapping region and the number of physical resource blocks in the second overlapping region is not less than a third value; Acquire the CSI report based on the CSI reference signal transmitted in the first overlapping area and the second overlapping area; The third value is a positive integer, and the third value is associated with the subband size of the first CSI subband or the second subband; the second overlapping area is the overlapping area of ​​the second CSI subband and the second downlink subband, and there is an uplink subband between the second downlink subband and the first downlink subband.

9. The information reporting method according to claim 8, characterized in that: The third value is a product of a subband size of the first CSI subband or the second subband and a preset third coefficient.

10. The information reporting method according to claim 1, characterized in that: The acquiring a CSI report based on a channel state information CSI reference signal transmitted in the first overlapping region includes: Determine that the CSI reference signal resource density in the first overlapping area and the second overlapping area is not less than a fourth value; Acquire a CSI report based on the CSI reference signals transmitted in the first overlapping area and the second overlapping area; The fourth value is associated with the CSI reference signal resource density of the first CSI subband or the second subband; the second overlapping area is the overlapping area of ​​the second CSI subband and the second downlink subband, and there is an uplink subband between the second downlink subband and the first downlink subband.

11. The information reporting method according to claim 10, characterized in that: The fourth value is a product of the CSI reference signal resource density of the first CSI subband or the second subband and a preset fourth coefficient.

12. The information reporting method according to any one of claims 8 to 11, characterized in that: The acquiring a CSI report based on a channel state information CSI reference signal transmitted in the first overlapping region includes: The CSI report is obtained based on the measurement result corresponding to the CSI reference signal in the first overlapping area and the measurement result corresponding to the CSI reference signal in the second overlapping area.

13. The information reporting method according to any one of claims 1 to 12, characterized in that: Also includes: In response to satisfying a preset condition, generating the CSI report including invalid indication information, where the invalid indication information is used to indicate that content of the CSI report is invalid; The preset conditions include at least one of the following: no CSI reference signal is transmitted in the first overlapping area, the density of the CSI reference signal in the first overlapping area is less than a preset density value, the physical resource blocks in the first overlapping area are less than a first value, the CSI reference signal resource density in the first overlapping area is less than a second value, the sum of the number of physical resource blocks in the first overlapping area and the number of physical resource blocks in the second overlapping area is less than a third value, and the CSI reference signal resource density in the first overlapping area and the second overlapping area is less than a fourth value.

14. An information reporting device, characterized in that: include: An acquiring unit, configured to acquire a CSI report based on a channel state information CSI reference signal transmitted in the first overlapping region; The first overlapping area is a partial overlapping area of ​​the first CSI subband and the first downlink subband; A reporting unit, used for reporting the CSI report.

15. A computer-readable storage medium, wherein the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored thereon, wherein: When the computer program is executed by a processor, the steps of the information reporting method according to any one of claims 1 to 13 are executed.

16. An information reporting device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor executes the steps of the information reporting method according to any one of claims 1 to 13.

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