Information reporting method and device and computer readable storage medium

Abstract

An information reporting method and device, and a computer readable storage medium, the information reporting method comprising: acquiring a channel state information (CSI) report based on a CSI reference signal transmitted in a first overlapping region; the first overlapping region is a partial overlapping region of the first CSI sub-band and the first downlink sub-band; and reporting the CSI report. By adopting the scheme, the terminal equipment can send the effective CSI report, and the network equipment can obtain the effective CSI report.

Description

Technical Field

[0001] 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

[0002] In the existing time division multiplexing (TDD) system, all frequency domain resources of a TDD carrier must have the same transmission direction at the same time, and the uplink and downlink time slot ratios of different frequency domain resources cannot be flexibly configured. With the diversification of data services, different services have different requirements for uplink and downlink transmission, and a single uplink and downlink time slot ratio cannot meet the needs of different services.

[0003] In the prior art, a sub-band full-duplex transmission scheme is proposed, whereby network equipment (such as base stations, etc.) divides the same TDD carrier into different sub-bands in the frequency domain, and simultaneously performs uplink reception and downlink transmission on different sub-bands. For terminal equipment, half-duplex mode is supported, whereby uplink transmission is performed on the uplink sub-band or downlink reception is performed on the downlink sub-band at a certain time point.

[0004] When using the Channel State Information (CSI) subband to report a CSI report, part of some CSI subbands overlaps with the downlink subband, and the other part overlaps with the uplink subband or the guard band. For CSI subbands that partially overlap with the downlink subband, the network device cannot guarantee whether the obtained CSI report is valid, and the terminal device cannot determine whether the CSI measurement result is valid. Summary of the invention

[0005] One of the objectives of the present invention is to provide an information reporting method, so that a terminal device can send a valid CSI report.

[0006] 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.

[0007] When the first CSI subband and the first downlink subband have a first overlapping region, 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 a valid CSI report and provide feedback.

[0008] 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.

[0009] When the density of the CSI reference signals transmitted in the first overlapping area is relatively high, the terminal device obtains the CSI report based on the CSI reference signals transmitted in the first overlapping area, and then reports the CSI report. Since the density of the CSI reference signals transmitted in the first overlapping area is relatively high, the probability of including multiple CSI reference signals in the first overlapping area increases, and the CSI report can be obtained based on as many CSI reference signals as possible, which can further improve the effectiveness of the CSI report.

[0010] 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.

[0011] When the number of physical resource blocks used for transmitting CSI reference signals in the first overlapping region is large, the terminal device obtains the CSI report based on the CSI reference signals transmitted in the first overlapping region, and then reports the CSI report. Since the number of physical resource blocks in the first overlapping region is large, the probability that the first overlapping region includes multiple CSI reference signals is large, and the CSI report can be obtained based on more CSI reference signals as much as possible, which can further improve the effectiveness of the CSI report.

[0012] Optionally, the first value is the product of the subband size of the first CSI subband and a preset first coefficient.

[0013] 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; and obtaining the CSI report based on the CSI reference signal transmitted in the first overlapping area.

[0014] When the resource density of the CSI reference signal in the first overlapping region is relatively large, there is a high probability that the first overlapping region includes a plurality of CSI reference signals. Therefore, the effectiveness of the CSI report can be improved with a high probability.

[0015] Optionally, the second value is the product of the CSI reference signal resource density of the first CSI subband and a preset second coefficient.

[0016] 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.

[0017] Optionally, obtaining a CSI report based on a 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.

[0018] Optionally, the third value is the product of a subband size of the first CSI subband or the second subband and a preset third coefficient.

[0019] Optionally, obtaining a 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 a CSI report based on the CSI reference signal transmitted in the first overlapping area and the second overlapping area; 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 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 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.

[0021] 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.

[0022] 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.

[0023] The terminal device obtains a CSI report based on the CSI reference signal in the first overlapping area and the CSI reference signal in the second overlapping area. The terminal device may report the CSI report on the first CSI subband, may report the CSI report on the second CSI subband, or may report the CSI report on both the first CSI subband and the second CSI subband.

[0024] 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.

[0025] If there is no physical resource block for transmitting the CSI reference signal in the first overlapping region, or the number of physical resource blocks for transmitting the CSI reference signal in the first overlapping region is small, or the total number of physical resource blocks for transmitting the CSI reference signal in the first overlapping region and the second overlapping region is small, a CSI report containing invalid indication information is generated to indicate to the network device that the CSI report is invalid. Thus, when there is no CSI reference signal 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 according to the invalid CSI report.

[0026] 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 a channel state information CSI reference signal transmitted in a 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.

[0027] In a third aspect, the present invention further 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 executed by a processor, the steps of any of the above-mentioned information reporting methods are executed.

[0028] 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 executable on the processor, and the processor executes the steps of any one of the above-mentioned information reporting methods when running the computer program. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a flow chart of an information reporting method in an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of the position relationship between a CSI subband and an uplink and downlink subband in an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of another position relationship between a CSI subband and an uplink and downlink subband in an embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of the position relationship between another CSI subband and uplink and downlink subbands in an embodiment of the present invention;

[0033] Figure 5 It is a structural diagram of an information reporting device in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In the prior art, some CSI subbands partially overlap with downlink subbands. For CSI subbands that partially overlap with downlink subbands, the reporting of the corresponding CSI report generally includes the following two processing schemes: Processing scheme 1, for the overlapping part of the CSI subband and the downlink subband, it is still necessary to perform CSI measurement and generate a CSI report; Processing scheme 2, for the overlapping part of the CSI subband and the uplink subband, no CSI measurement is performed.

[0035] For example, CSI subband 1 partially overlaps with downlink subband 1, and CSI subband 1 occupies 8 consecutive physical resource blocks, of which physical resource block 1 and physical resource block 2 overlap with downlink subband 1. If the above processing scheme 1 is adopted, for CSI subband 1, a CSI report is generated based on the CSI reference signals in physical resource blocks 1 and physical resource blocks 2. If the above processing scheme 2 is adopted, for CSI subband 1, no CSI report is generated, or an invalid CSI report is generated.

[0036] However, in the above processing solution 1, there may be no CSI reference signal in the overlapping part of CSI subband 1 and the downlink subband, so the generated CSI report is essentially invalid. For the above processing solution 2, the network device cannot obtain the CSI report of CSI subband 1 or determine whether the CSI report is valid.

[0037] In the embodiment of the present invention, 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. Thus, the terminal device can obtain a valid CSI report and provide feedback.

[0038] 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.

[0039] The terminal device described in the embodiments of the present application is a device with a wireless communication function, which may also be referred to as a terminal, a mobile station (MS), a mobile terminal (MT), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a user equipment (UE), a UE unit, a UE station, a mobile station, a remote station, a remote terminal device, a mobile device, a wireless communication device, a UE agent or a UE device, etc. The UE may be fixed or mobile. It should be noted that the UE may support at least one wireless communication technology, such as LTE, NR, etc. Exemplarily, the UE may be a mobile phone, a tablet computer (pad), a desktop computer, a laptop computer, an all-in-one computer, a vehicle-mounted 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 function, 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.

[0040] In the embodiment of the present application, the network device is a device that provides wireless communication functions for the terminal device, and can also be referred to as a radio access network (RAN) device, or an access network element, an access network device, etc. Among them, the network device can 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 (generation nodeB, gNB) in 5G, an evolved node B (evolved node B, eNB), a radio network controller (radio network controller, RNC), a node B (node ​​B, NB), a base station controller (basestation controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (for example, home evolved node B, or home node B, HNB), a baseband unit (baseband unit, BBU), a transmitting and receiving point (transmitting and receiving point, TRP), a transmitting point (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, a vehicle-mounted device, a terminal device, a wearable device, and a network device in future mobile communications or a network device in a future evolving PLMN. In some embodiments, the network device may also be a device having a wireless communication function 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.

[0041] 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.

[0042] The embodiment of the present invention provides an information reporting method, referring to Figure 1 , the following is a detailed description through specific steps.

[0043] In a specific implementation, the information reporting method recorded in the following steps 101 to 102 can be executed by a chip with a data processing function in a terminal device, or by a chip module with a data processing function in a terminal device, or by a terminal device. The following description is made by taking the terminal device executing the information reporting method recorded in the following steps 101 to 102 as an example.

[0044] Step 101: Acquire a CSI report based on a CSI reference signal transmitted in a first overlapping region.

[0045] Step 102, sending a CSI report.

[0046] In a specific implementation, the subband size of the CSI subband may be configured by the network device through high-level signaling (such as RRC signaling, MAC CE, etc.) Specifically, the subband size may be determined by the parameter subbandSize in the IE CSI-ReportConfig.

[0047] 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.

[0048] In the embodiment of the present invention, the first CSI subband may be a subband for reporting a CSI report. The first downlink subband may be a subband for transmitting downlink data. The first CSI subband and the first downlink subband may partially overlap.

[0049] like Figure 2 As shown, 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 given. Figure 2 In the embodiment, CSI subband 1 completely overlaps with downlink subband 1, CSI subband 2 partially overlaps with downlink subband 1, and a guard bandwidth (GB) is set between downlink subband 1 and uplink subband 1.

[0050] like Figure 2 As shown in , CSI subband 2 can be regarded as the first CSI subband mentioned above, and the downlink subband 1 can be regarded as the first downlink subband.

[0051] In the 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.

[0052] 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.

[0053] Reference Figure 2 The subband size of CSI subband 2 is 4, that is, the first CSI subband occupies 4 physical resource blocks, which are PRB1 to PRB4, respectively, wherein the first overlapping area includes PRB1 to PRB3.

[0054] 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.

[0055] Combination Figure 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.

[0056] 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.

[0057] In a specific implementation, there may be no physical resource block for transmitting the CSI reference signal in the first overlapping region, that is, the first overlapping region does not transmit the CSI reference signal.

[0058] Reference Figure 3 , a schematic diagram of the position relationship between another CSI subband and uplink and downlink subbands in an embodiment of the present invention is given. Figure 3 In the embodiment, CSI subband 1 completely overlaps with downlink subband 1, CSI subband 2 (i.e., the first CSI subband) partially overlaps with downlink subband 1 (i.e., the first downlink subband), and a guard bandwidth (GB) is set between downlink subband 1 and uplink subband 1. The subband size of CSI subband 2 is 4, which are PRB1 to PRB4, wherein the first overlapping area includes PRB1, and no CSI reference signal is transmitted in PRB1.

[0059] In this scenario, the terminal device may generate a CSI report including invalid indication information and send the CSI report, and the invalid indication information may be used to indicate that the CSI report is invalid. The network device receives the CSI report, obtains the invalid indication information therefrom, and determines that the CSI report is an invalid CSI report.

[0060] In some embodiments, the invalid indication information may be represented by a special value or an arbitrary value. For example, if the content in the CSI report is all 0s or all 1s, it indicates that the CSI report is invalid.

[0061] Combination Figure 3 As shown, the content of the CSI report reported by the terminal device is all 0s, indicating that the CSI report is an invalid CSI report.

[0062] 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 may be obtained based on the CSI reference signal transmitted in the first overlapping area.

[0063] 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.

[0064] 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 (density) set in a CSI reference signal resource mapping (CSI-RS-resourcemapping).

[0065] In some embodiments, the preset density threshold may be a density set in CSI-RS-resourcemapping.

[0066] It can be understood that the density set in CSI-RS-resourcemapping can refer to: the number of CSI reference signals in a physical resource block. The density can be a positive integer or a decimal. For example, a density value of 3 indicates that the number of CSI reference signals in a physical resource block is 3; a density value of 0.5 indicates that there is 1 CSI reference signal in two adjacent physical resource blocks.

[0067] 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.

[0068] like Figure 2As shown, the number of CSI reference signals in the first overlapping area is 2, and the total number of physical resource blocks in the first overlapping area is 3, so the CSI reference signal resource density in the first overlapping area is 2 / 3.

[0069] Combination Figure 2 , providing a specific example, the network device configures a preset density threshold of 0.5. In the first overlapping area, it is set that PRB1 and PRB3 each include 1 CSI reference signal, that is, the first overlapping area includes 2 CSI reference signals. Therefore, the terminal device determines that the density of the CSI reference signal in the first overlapping area is 2 / 3, which is greater than the preset density threshold.

[0070] The terminal device generates a CSI report based on all CSI reference signals in the first overlapping area. The terminal device sends the generated CSI report to the network device on the first CSI subband.

[0071] Combination Figure 2 , providing another specific example, the network device configures a preset density threshold of 0.5. In the first overlapping area, PRB2 is set to transmit the CSI reference signal, and PRB2 includes 1 CSI reference signal. As a result, the terminal device determines that the density of the CSI reference signal in the first overlapping area 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.

[0072] 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 can be obtained based on a CSI reference signal transmitted in the first overlapping region. In some embodiments, the first value is a positive integer, and the first value is less than a subband size of the first CSI subband.

[0073] 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 through high-layer signaling (such as RRC signaling, MAC CE, etc.). The preset first coefficient may also be a default value and is known to the terminal device.

[0074] 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.

[0075] 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.

[0076] like Figure 2As shown, the first overlapping area includes 3 physical resource blocks (PRB1 to PRB3), so the number of physical resource blocks included in the first overlapping area 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 area. The terminal device sends the generated CSI report to the network device on the first CSI subband.

[0077] 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 is 2.

[0078] like Figure 3 As shown, 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.

[0079] Specifically, the terminal device sends the generated CSI report containing invalid indication information to the network device on the first CSI subband.

[0080] 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, a CSI report may be obtained based on the CSI reference signal transmitted in the first overlapping area.

[0081] 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 the second coefficient, and the second coefficient may be sent by the network device to the terminal device through high-layer signaling. The preset second coefficient may also be a default value and is known to the terminal device.

[0082] 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.

[0083] 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.

[0084] like Figure 2 As shown, the first overlapping area includes 3 physical resource blocks (PRB1 to PRB3), PRB1 and PRB3 are used to transmit CSI reference signals, and PRB1 and PRB3 each include 1 CSI reference signal, then the CSI reference signal resource density in the first overlapping area is 2 / 3. Thus, the terminal device determines that the CSI reference signal resource density in the first overlapping area 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 area.

[0085] 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.

[0086] Reference Figure 3 , the first overlapping region includes 1 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.

[0087] In the embodiment of the present invention, there may also be a scenario where multiple sub-bands are jointly reported. Figure 4 , a schematic diagram of the position relationship between a CSI subband and uplink and downlink subbands in an embodiment of the present invention is given.

[0088] Figure 4 In the embodiment, CSI subband 1 completely overlaps with downlink subband 1, CSI subband 2 partially overlaps with downlink subband 1, a guard bandwidth (GB) is set between downlink subband 1 and uplink subband 1, and a guard bandwidth is set between downlink subband 2 and uplink subband 1. There is a first overlapping area (PRB1 to PRB3) between CSI subband 2 and downlink subband 1, and there is a second overlapping area (PRB8) between CSI subband 3 and downlink subband 2.

[0089] 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.

[0090] In a specific implementation, the third value may be an integer, and the third value may be associated with the subband size of the first CSI subband; or, the third value may also 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.

[0091] 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 is known to the terminal device.

[0092] 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 the 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.

[0093] 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 may generate and send a CSI report including invalid indication information.

[0094] 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.

[0095] like Figure 4 As shown, the first overlapping region includes 3 physical resource blocks (PRB1-PRB3), and the second overlapping region includes 1 physical resource block (PRB8). PRB2 in the first overlapping region is used to transmit CSI reference signals, and PRB8 in the second overlapping region is used to transmit CSI reference signals.

[0096] 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 equal to 4, which is greater than the preset third value. Thus, the terminal device generates a CSI report based on the CSI reference signal transmitted in PRB2 and the CSI reference signal transmitted in PRB8.

[0097] 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 may use the first CSI subband to report the above CSI report including invalid indication information to the network device; or, the terminal device may use the second CSI subband to report the above CSI report including invalid indication information to the network device; or, the terminal device may report the above CSI report including invalid indication information on both the first CSI subband and the second CSI subband.

[0098] 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.

[0099] 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 between the first overlapping area and the second overlapping area.

[0100] 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 between the first overlapping area and the second overlapping area is: (2+0) / (1+3)=0.5.

[0101] 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 between the first overlapping area and the second overlapping area is: (2+1) / (1+3)=0.75.

[0102] 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 is known to the terminal device.

[0103] 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.

[0104] like Figure 4 As shown, the first overlapping area includes 3 physical resource blocks (PRB1 to PRB3), and the second overlapping area includes 1 physical resource block (PRB8). PRB2 in the first overlapping area is set to transmit the CSI reference signal, and there is only one CSI reference signal in PRB2; PRB8 in the second overlapping area is used to transmit the CSI reference signal, and there is only one CSI reference signal in PRB8. That is, the CSI reference signal resource density in the first overlapping area is 1 / 3, and the CSI reference signal resource density in the second overlapping area is 1.

[0105] 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.

[0106] 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.

[0107] like Figure 4 As shown, the first overlapping area includes 3 physical resource blocks (PRB1 to PRB3), and the second overlapping area includes 1 physical resource block (PRB8). PRB2 in the first overlapping area is set to transmit the CSI reference signal, and there is only one CSI reference signal in PRB2; there is no physical resource block for transmitting the CSI reference signal in the second overlapping area. That is, the CSI reference signal resource density in the first overlapping area is 1 / 3, and the CSI reference signal resource density in the second overlapping area is 0.

[0108] 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.

[0109] 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.

[0110] Specifically, when there are a first CSI subband and a second CSI subband, the terminal device may use the first CSI subband to report a CSI report to the network device; or, the terminal device may use the second CSI subband to report a CSI report to the network device; or, the terminal device may report a CSI report on both the first CSI subband and the second CSI subband.

[0111] In summary, in the embodiment of the present invention, 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. Thus, the terminal device can obtain a valid CSI report and provide feedback.

[0112] Reference Figure 5 , an information reporting device 50 in an embodiment of the present invention is provided, comprising: an acquisition unit 501 and a reporting unit 502, wherein:

[0113] An acquisition unit 501 is configured to 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;

[0114] The reporting unit 502 is configured to report the CSI report.

[0115] In a specific implementation, the specific execution process of the above-mentioned acquisition unit 501 and the reporting unit 502 can correspond to step 101 to step 102, which will not be repeated here.

[0116] In a specific implementation, the above-mentioned information reporting device 50 may correspond to a chip with a data processing function in a terminal device, or to a chip module with a data processing function in a terminal device, or to a terminal device.

[0117] In a specific implementation, each module / unit included in each device or product described in the above embodiments may be a software module / unit or a hardware module / unit, or may be partly a software module / unit and partly a hardware module / unit.

[0118] For example, for each device or product applied to or integrated in 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 in 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 a 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 in different components in the terminal, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits.

[0119] 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 executed by a processor, the steps of the information reporting method provided in any of the above embodiments are executed.

[0120] An embodiment of the present invention further provides an information reporting device, including a memory and a processor, wherein the memory stores a computer program executable on the processor, and the processor executes the steps of the information reporting method provided in any of the above embodiments when running the computer program.

[0121] A person skilled in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing the relevant hardware through a program, and the program may be stored in a computer-readable storage medium, which may include: ROM, RAM, disk or CD, etc.

[0122] 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 protection scope of the present invention shall be subject to 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 between 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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