A channel measurement method, apparatus, communication device, and storage medium

Abstract

A channel measurement method and device, a communication device and a storage medium are disclosed. The method comprises: a terminal device receiving one or more first signals; and sending first information; wherein the first information is associated with the first signals, and the first information comprises at least one or more of the following: an index of at least one first signal; and an index of a first precoding matrix, the index of the first precoding matrix being associated with the at least one first signal.

Description

Technical Field

[0001] This invention relates to the field of communications, and more specifically to a channel measurement method, apparatus, communication device, and storage medium. Background Technology

[0002] Existing channel measurement methods can be divided into two types: one is that the terminal device performs periodic or semi-persistent channel state information (CSI) measurement and reporting based on the periodic or semi-static reference signal (RS) sent by the network device; the other is that the terminal device performs non-periodic or one-time CSI measurement and reporting based on the non-periodic RS sent by the network device. In this method, the network device usually sends an indication message first, instructing the terminal device to enable the RS and associated CSI reporting configuration, so that the terminal device sends or receives RS according to the pre-configured settings after receiving the indication message, measures and reports the CSI.

[0003] For the evolution of future networks (e.g., 6G), considering the energy efficiency of network and terminal equipment, energy-saving configurations can be implemented for the air interface, such as... Figure 1 The diagram shows how by aggregating and transmitting multiple frequently transmitted common signals, or by default transmitting only some necessary common signals (such as synchronization signals and physical broadcast channel blocks (SSBs)) over a longer transmission period, network devices and terminal devices can sleep deeply when there is no transmission demand, further reducing energy consumption.

[0004] However, in this scenario, for the existing periodic or semi-static channel measurement methods, in order to ensure the accuracy of obtaining channel and interference information, it is usually necessary to send RS and report CSI at short intervals (for example, the interval for sending RS and reporting CSI in New Radio is usually 20ms). This causes network devices and terminal devices to frequently perform air interface transmissions due to short-periodic RS transmission and CSI reporting, thus failing to achieve energy saving for network devices and terminal devices. For the existing non-periodic channel measurement methods, the processing capabilities of terminal devices are limited, resulting in more steps and significant delays in the measurement process, which affects the user experience rate during data transmission. Furthermore, due to the limited uplink resources for air interface transmission, configuring channel measurement reference signal (SRS, Sounding RS) resources for each terminal device will significantly reduce the uplink transmission spectral efficiency, thus failing to achieve network energy saving.

[0005] In other words, existing channel measurement methods cannot be directly applied to energy-saving air interfaces, meaning that existing channel measurement methods cannot achieve energy saving for network devices and terminal devices. Summary of the Invention

[0006] To address the existing technical problems, embodiments of the present invention provide a channel measurement method, apparatus, communication device, and storage medium.

[0007] To achieve the above objectives, the technical solution of this invention is implemented as follows:

[0008] In a first aspect, embodiments of the present invention provide a channel measurement method, the method being applied to a terminal device, the method comprising: receiving one or more first signals;

[0009] Send first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: an index of at least one first signal; an index of a first precoding matrix, the index of the first precoding matrix being associated with the at least one first signal.

[0010] In the above scheme, the method further includes: receiving a second signal, the second signal being associated with the first signal and / or the first information; sending the second information; wherein the second information is associated with the second signal, and the second information includes one or more of the following: a rank indicator; a second signal index indicator, the second signal index indicator being used to indicate one or more indices in the index of the at least one first signal; a column indicator, the column indicator being used to indicate one or more column vectors in the first precoding matrix; a modulation and coding indicator; and an interference information indicator.

[0011] In the above scheme, the time unit where the second transmission resource of the first information is located is separated from the start time unit or end time unit of the first transmission resource of the first signal by a first offset, the first offset being a predefined value; or, the method further includes: receiving a first indication, the first indication being used to indicate the first offset.

[0012] In the above scheme, the first value representing the index number of at least one first signal included in the first information is a predefined value, or the method further includes: receiving a second indication, the second indication being used to indicate the index number of the at least one first signal.

[0013] In the above scheme, the method further includes: receiving first threshold information; the channel quality of the at least one first signal is greater than or equal to the first threshold corresponding to the first threshold information.

[0014] In the above scheme, the first signal includes at least one or more of the following: synchronization signal and physical broadcast channel block SSB; primary synchronization signal PSS; secondary synchronization signal SSS; physical broadcast channel PBCH; low power synchronization signal LP-SS.

[0015] In the above scheme, the time unit where the fourth transmission resource of the second information is located is separated from the time unit where the third transmission resource of the second signal is located by a second offset, the second offset being a predefined value; or, the method further includes: receiving a third indication, the third indication being used to indicate the second offset.

[0016] In the above scheme, the second signal is also used to indicate the receipt of first control information, which is used to indicate the transmission resources for data transmission.

[0017] In the above scheme, before receiving the second signal, the method further includes: receiving a third signal, the third signal being used to indicate receiving the second signal.

[0018] In the above scheme, the third signal is also used to indicate the receipt of second control information, which is used to indicate the transmission resources for data transmission.

[0019] In the above scheme, the time unit where the third transmission resource of the second signal is located is separated from the time unit where the fifth transmission resource of the third signal is located by a third offset, the third offset being a predefined value; or, the method further includes: receiving a fourth indication, the fourth indication being used to indicate the third offset.

[0020] In the above scheme, before receiving the second signal, the method further includes: receiving third control information, the third control information being used to indicate the transmission resources for receiving the second signal and transmitting data.

[0021] In the above scheme, the time unit where the third transmission resource of the second signal is located is separated from the time unit where the sixth transmission resource of the third control information is located by a fourth offset, the fourth offset being a predefined value; or, the method further includes: receiving a fifth indication, the fifth indication being used to indicate the fourth offset.

[0022] In the above scheme, the modulation and coding indication is associated with at least one of the rank indication, the second signal index indication, and the column indication; and / or, the interference information indication is associated with at least one of the rank indication, the second signal index indication, and the column indication.

[0023] In the above scheme, the second signal is associated with the first signal and / or the first information, including at least one of the following: the first signal and / or the first information are associated with the second signal in a first reporting configuration; the first signal and / or the first information are associated with the first reporting configuration, and the second signal is associated with a second reporting configuration, wherein the first reporting configuration and the second reporting configuration are associated; the second signal is associated with the index of the at least one first signal and / or the index of the first precoding matrix.

[0024] Secondly, embodiments of the present invention provide a channel measurement method, the method being applied to a network device, the method comprising sending one or more first signals;

[0025] Receive first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: an index of at least one first signal; an index of a first precoding matrix, the index of the first precoding matrix being associated with the at least one first signal.

[0026] In the above scheme, the method further includes: transmitting a second signal, the second signal being associated with the first signal and / or the first information; receiving the second information; wherein the second information is associated with the second signal, and the second information includes one or more of the following: a rank indicator; a second signal index indicator, the second signal index indicator being used to indicate one or more indices in the indices of the at least one first signal; a column indicator, the column indicator being used to indicate one or more column vectors in the first precoding matrix; a modulation and coding indicator; and an interference information indicator.

[0027] In the above scheme, the method further includes: sending a first indication, the first indication being used to indicate the first bias, the first bias being the interval between the time unit where the second transmission resource of the first information is located and the start time unit or end time unit of the first transmission resource of the first signal.

[0028] In the above scheme, the method further includes: sending a second indication, the second indication being used to indicate the index number of the at least one first signal.

[0029] In the above scheme, the method further includes: sending first threshold information, wherein the channel quality of the at least one first signal is greater than or equal to the first threshold corresponding to the first threshold information.

[0030] In the above scheme, the first signal includes at least one or more of the following: synchronization signal and physical broadcast channel block SSB; primary synchronization signal PSS; secondary synchronization signal SSS; physical broadcast channel PBCH; low power synchronization signal LP-SS.

[0031] In the above scheme, the method further includes: sending a third indication, the third indication being used to indicate the second bias, the second bias being the interval between the time unit where the fourth transmission resource of the second information is located and the time unit where the third transmission resource of the second signal is located.

[0032] In the above scheme, the second signal is also used to indicate the receipt of first control information, which is used to indicate the transmission resources for data transmission.

[0033] In the above scheme, before sending the second signal, the method further includes: sending a third signal, the third signal being used to indicate receiving the second signal.

[0034] In the above scheme, the third signal is also used to indicate the receipt of second control information, which is used to indicate the transmission resources for data transmission.

[0035] In the above scheme, the method further includes: sending a fourth indication, the fourth indication being used to indicate the third bias, the third bias being the interval between the time unit where the third transmission resource of the second signal is located and the time unit where the fifth transmission resource of the third signal is located.

[0036] In the above scheme, before sending the second signal, the method further includes: sending third control information, the third control information being used to indicate the transmission resources for receiving the second signal and transmitting data.

[0037] In the above scheme, the method further includes: sending a fifth indication, the fifth indication being used to indicate the fourth offset, the fourth offset being the interval between the time unit where the third transmission resource of the second signal is located and the time unit where the sixth transmission resource of the third control information is located.

[0038] In the above scheme, the modulation and coding indication is associated with at least one of the rank indication, the second signal index indication, and the column indication; and / or, the interference information indication is associated with at least one of the rank indication, the second signal index indication, and the column indication.

[0039] In the above scheme, the second signal is associated with the first signal and / or the first information, including at least one of the following: the first signal and / or the first information are associated with the second signal in a first reporting configuration; the first signal and / or the first information are associated with the first reporting configuration, and the second signal is associated with a second reporting configuration, wherein the first reporting configuration and the second reporting configuration are associated; the second signal is associated with the index of the at least one first signal and / or the index of the first precoding matrix.

[0040] Thirdly, embodiments of the present invention also provide a channel measurement device, which is applied to a terminal device and includes: a first receiving unit and a first transmitting unit; wherein,

[0041] The first receiving unit is configured to receive one or more first signals;

[0042] The first transmitting unit is configured to transmit first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: an index of at least one first signal; an index of a first precoding matrix, wherein the index of the first precoding matrix is ​​associated with the at least one first signal.

[0043] Fourthly, embodiments of the present invention also provide a channel measurement device, the device being applied to a network device, the method comprising: a second transmitting unit and a second receiving unit; wherein,

[0044] The second transmitting unit is used to generate one or more first signals;

[0045] The second receiving unit is configured to receive first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: an index of at least one first signal; an index of a first precoding matrix, the index of the first precoding matrix being associated with the at least one first signal.

[0046] Fifthly, embodiments of the present invention also provide a communication device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method applied to a terminal device or a network device as described in the embodiments of the present invention.

[0047] In a sixth aspect, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method applied to a terminal device or network device as described in the embodiments of the present invention.

[0048] In a seventh aspect, embodiments of the present invention also provide a computer program product, including a computer program that, when executed by a processor, implements the method described in the embodiments of the present invention for application to a terminal device or a network device.

[0049] This invention provides a channel measurement method, apparatus, communication device, and storage medium. A terminal device receives multiple first signals sent by a network device, enabling the terminal device to perform long-term measurements of basic spatial information and feed back the measured first information to the network device. The first information includes one or more of the following: an index of at least one first signal, an index of a first precoding matrix associated with the at least one first signal, thereby facilitating subsequent actual data transmission based on the first information, reducing the complexity and latency of channel measurement, and minimizing the impact on user experience speed. Attached Figure Description

[0050] Figure 1 This is a schematic diagram illustrating the transmission of a public signal for future network evolution.

[0051] Figure 2 A flowchart illustrating the channel measurement method involving existing terminal equipment.

[0052] Figure 3 A flowchart illustrating the channel measurement method involving existing network devices and terminal devices;

[0053] Figure 4 This is a flowchart illustrating the channel measurement method according to an embodiment of the present invention. Figure 1 ;

[0054] Figure 5 This is a flowchart illustrating the channel measurement method according to an embodiment of the present invention. Figure 2 ;

[0055] Figure 6 This is a flowchart illustrating the channel measurement method according to an embodiment of the present invention. Figure 3 ;

[0056] Figure 7 This is a schematic diagram of the process of long-period channel measurement according to an embodiment of the present invention;

[0057] Figure 8 This is a flowchart illustrating the channel measurement method according to an embodiment of the present invention. Figure 4 ;

[0058] Figure 9 This is a schematic diagram of the process of long-period channel measurement and in-path channel measurement according to an embodiment of the present invention;

[0059] Figure 10 Schematic diagram of the composition structure of the channel measurement device provided in the embodiments of the present invention Figure 1 ;

[0060] Figure 11 Schematic diagram of the composition structure of the channel measurement device provided in the embodiments of the present invention Figure 2 ;

[0061] Figure 12 This is a schematic diagram of the hardware composition structure of a communication device provided in an embodiment of the present invention. Detailed Implementation

[0062] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0063] The technical solutions of this invention can be applied to various communication systems, such as GSM (Global System of Mobile communication), LTE (Long Term Evolution), or 5G systems. Optionally, a 5G system or 5G network can also be referred to as a New Radio (NR) system or NR network.

[0064] For example, the communication system used in this embodiment of the invention may include network devices and terminal devices (also referred to as terminals, communication terminals, etc.); the network device may be a device that communicates with the terminal device. The network device can provide communication coverage within a certain area and can communicate with terminals located within that area. Optionally, the network device may be a base station in various communication systems, such as an evolved Node B (eNB) in an LTE system, or a gNB in ​​a 5G or NR system.

[0065] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Communication devices may include network devices and terminals with communication functions. Network devices and terminal devices can be the specific devices described above, which will not be repeated here. Communication devices may also include other devices in the communication system, such as network controllers, mobility management entities, and other network entities. This embodiment of the present invention does not limit these.

[0066] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0067] The terms “first,” “second,” etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0068] Before providing a detailed description of the access method in the embodiments of the present invention, a brief description of the related technologies will be given first.

[0069] In relevant protocols, understanding the transmission characteristics of signals through channel measurement is fundamental to data transmission. Accurate base station-user channel measurements are essential for network devices to precisely schedule data transmission for terminal devices. Specifically, based on process division, existing channel measurement methods can be categorized into channel measurement methods involving terminal devices and channel measurement methods involving both network devices and terminal devices.

[0070] Figure 2 A flowchart illustrating the channel measurement method involving existing terminal equipment; such as... Figure 2 As shown, the flow of the channel measurement method involving terminal equipment is as follows:

[0071] Step 1: The network device sends one or more Channel State Information reference signals (CSI-RS) to the terminal device;

[0072] Step 2: The terminal device receives one or more CSI-RS, calculates and reports CSI based on the CSI-RS;

[0073] Step 3: Network devices can perform accurate data transmission scheduling for terminal devices based on the CSI reported by the terminal.

[0074] In current channel measurement methods, the CSI reported by the terminal device typically includes the following information:

[0075] The CSI-RS Resource Indicator (CRI) is used to indicate the best-performing CSI-RS recommended by the terminal device among all CSI-RS sent by the network device.

[0076] The Rank Indicator (RI) is used to indicate the maximum number of independent data streams that a terminal device can transmit simultaneously without interference; that is, the maximum number of transmission streams.

[0077] Channel Quality Indicator (CQI) is used to indicate the recommended modulation and coding scheme for terminal equipment;

[0078] The Precoding Matrix Indicator (PMI) is used to indicate the precoding matrix recommended by the terminal device. Here, for terminal-based channel measurements, due to limitations in the terminal device's computing power, to avoid excessive computational complexity for CSI, the protocol defines some standardized precoding codebooks. The terminal device can traverse these codebooks to select the matrix with the best performance and report the corresponding index via the PMI.

[0079] Figure 3 A flowchart illustrating the channel measurement method involving existing network and terminal equipment; such as... Figure 3 As shown, the flow of the channel measurement method involving network devices and terminal devices is as follows:

[0080] Step 1: The terminal device sends an uplink reference signal to the network device (in the NR protocol, the uplink reference signal can be SRS);

[0081] Step 2: The network device generates and transmits a precoded CSI-RS based on the received uplink reference signal; specifically, the network device can obtain the channel information between the user and the terminal based on the SRS, and determine some spatial information (such as basic spatial beamforming) based on this information.

[0082] Step 3: The terminal device calculates and reports the CSI based on the received precoded CSI-RS from the network device;

[0083] Step 4: The network device performs accurate data transmission scheduling for the terminal device based on the CSI reported by the terminal device.

[0084] In the current channel measurement method, since the network device has already obtained the channel information in advance based on the SRS sent by the terminal device, the terminal device does not need to calculate and report CRI and PMI. Therefore, the CSI reported by the terminal device can usually include RI and CQI.

[0085] Here, since network devices typically have stronger computing power than terminal devices, channel measurement methods based on network devices and terminal devices not only reduce the complexity of terminal devices but also reduce the latency of the entire channel measurement process.

[0086] Meanwhile, existing channel measurement methods are typically based on reference signals at the user equipment (UE) level. Specifically, the reference signal may include multiple ports to obtain richer parameters on the channel between the base station and the user, thereby enabling multi-stream transmission.

[0087] In addition, in the two existing channel measurement methods mentioned above, after receiving the CSI-RS or precoded CSI-RS from the network device, the terminal device also needs to receive an additional zero-power (ZP) CSI-RS. By measuring the ZP CSI-RS, interference information can be obtained, thereby more accurately calculating and reporting CSI, so that the network device can realize data transmission scheduling based on CSI.

[0088] In existing channel measurement methods, the SSB is a crucial signal in NR networks and a commonly emitted synchronization signal (SS) by network devices. The SSB mainly consists of synchronization signals and broadcast signals. Synchronization signals can include the primary synchronization signal (PSS) and the secondary synchronization signal (SSS); broadcast signals can include the physical broadcast channel (PBCH) and the demodulation reference signal (DMRS).

[0089] The PSS and / or SSS are used to carry the cell's physical identifier and can be used for basic synchronization / AGC / Radio Resource Management (RRM) measurements. The PBCH carries the Minimum Information Block (MIB, also known as MSI, minimum system information), which indicates the temporal resource location of spatial information, timing information, some basic cell information, and control information for scheduling SIB1 (Physical Downlink Control Channel PDCCH).

[0090] Terminal devices can perform time-domain / frequency-domain / spatial-domain synchronization based on SSBs sent by network devices, and realize automatic gain control (AGC) calibration (usually requiring the reception of 2-3 SSBs), as well as system information (also known as SIB1, System Information Block 1) reception.

[0091] Specifically, the terminal device can complete timing synchronization based on the preset transmission pattern of the frequency point in the SSB and the half-frame bits indicated in the MIB. The preset transmission pattern indicates on which Orthogonal Frequency Division Multiplexing (OFDM) symbols the SSB transmits on within a half-frame. The correspondence between the preset transmission patterns of different frequencies and their operating band, subcarrier spacing (SCS), and Global Synchronization Channel Number (GSCN) range is shown in the table below.

[0092] Table 1

[0093]

[0094] As shown in Table 1, each case represents a predefined transmission pattern within a half-frame length. Specifically, the transmission pattern for Case A corresponding to the 15kHz SCS can be defined as follows: the index of the first symbol of the candidate SS / PBCH block is {2,8}+14·n.

[0095] For operations without shared spectrum channel access, when the carrier frequency is less than or equal to 3 GHz, n = 0, 1. That is, for frequencies less than 3 GHz, there are a maximum of 4 SSB indices within one SSB burst, which are transmitted starting with the 2nd, 8th, 16th, and 22nd OFDM symbols in the half-frame, respectively. When the carrier frequency is greater than 3 GHz and within the frequency range (FR) 1 (i.e., greater than 3 GHz and less than 6 GHz), n = 0, 1, 2, 3. That is, for frequencies greater than 3 GHz and less than 6 GHz, there are a maximum of 8 SSB indices within one SSB burst, which are transmitted starting with the 2nd, 8th, 16th, 22nd, 30th, 36th, 44th, and 50th OFDM symbols in the half-frame, respectively. For operations with shared spectrum channel access, n = 0, 1, 2, 3, 4.

[0096] Furthermore, during initial access, the terminal device can default to a SSB transmission period of 20ms. Since SSB is typically used for basic synchronization and AGC / RRM functions, it does not have the concept of a port, meaning that the terminal device can only measure the channel of a single transmitter antenna based on the SSB.

[0097] In the evolution of future networks, considering the energy saving of network devices and terminal devices, it is necessary to configure the air interface for energy saving. For example, by aggregating and sending multiple frequently transmitted common signals, or by default sending only some necessary common signals (such as SSB) with a longer transmission cycle, network devices and terminal devices can sleep deeply when there is no transmission demand, further reducing energy consumption.

[0098] Based on the above scenario, for existing channel measurement methods involving terminal devices, in order to ensure the accuracy of obtaining channel and interference information, RS transmission and CSI reporting are usually required at a short period (e.g., 20ms). This results in frequent air interface transmissions for network and terminal devices, making it impossible to achieve energy saving for network and terminal devices. Furthermore, due to the limited processing capabilities of terminal devices, the measurement process involves many steps and significant delays, thus affecting the user experience rate during data transmission.

[0099] For existing channel measurement methods involving network and terminal devices, the limited uplink resources in the air interface cause a significant reduction in uplink spectral efficiency when configuring SRS resources for each terminal device. Furthermore, existing channel measurement methods typically require evenly distributing SRS resources across multiple UEs across various uplink transmission resources, leading to frequent SRS signal reception on the air interface by network devices, thus hindering network energy efficiency.

[0100] Currently, existing channel measurement methods cannot be directly applied to energy-efficient air interfaces, thus failing to achieve energy savings for network and terminal devices. How to reduce energy consumption and latency of network and terminal devices during channel measurement, and minimize the impact on user experience speed performance, has become an urgent problem to be solved.

[0101] Based on this, the present invention proposes a channel measurement method. Figure 4 This is a flowchart illustrating the channel measurement method according to an embodiment of the present invention. Figure 1 ;like Figure 4 As shown, the method is applied to a terminal device, and the method includes:

[0102] Step 101: Receive one or more first signals.

[0103] Here, the terminal device in the embodiments of the present invention can also be referred to as a terminal, which is a device with wireless transceiver capabilities. The terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on water (e.g., ships and other water transport); and it can also be deployed in the air (e.g., airplanes, drones, and satellites). The terminal device can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality terminal device, augmented reality terminal device, wireless terminal device in industrial control, wireless terminal device in autonomous driving, wireless terminal device in telemedicine, wireless terminal device in smart grids, wireless terminal device in transportation safety, wireless terminal device in smart cities, or wireless terminal device in smart homes. The terminal device can also be fixed or mobile. This application embodiment does not limit this.

[0104] Furthermore, the network device can be a Radio Access Network (RAN) point (or device) that connects the terminal to the wireless network, also known as a base station. It can be an evolved NodeB (eNB or eNodeB) in an LTE system, or a radio controller in a Cloud RAN (CRAN) scenario. Alternatively, the network device can be a relay station, access point, vehicle-mounted device, wearable device, or network device in a 5G network or a network device in a future evolved wireless communication network. It can also be one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a next-generation base station (gNB or ng-eNB) or transmission point, such as a baseband unit (BBU) or a distributed unit (DU). The embodiments of this application are not limited to these.

[0105] In this embodiment, the terminal device receives one or more first signals sent by the network device to measure the underlying spatial information based on the one or more first signals.

[0106] In some implementations, the first signal includes at least one or more of the following: SSB; PSS; SSS; PBCH; LP-SS (Low-Power Synchronization Signal).

[0107] In this embodiment, the one or more first signals received by the terminal device can be one or more of SSB, PSS, SSS, PBCH, and LP-SS. Furthermore, the first signal can be a channel measurement signal independent of the common signal, or it can be the common signal.

[0108] When the first signal is received by the terminal device as a channel measurement signal independent of the common signal, the frequency domain resources corresponding to the first signal and the common signal are different, and the corresponding time domain resources are at least partially the same (i.e. completely the same or partially the same). For example, the first signal can be one or more of SSB, PSS, SSS and PBCH.

[0109] Furthermore, in this case, the start time unit of the first signal can be defined based on the transmission pattern of the common signal. Specifically, the start time unit of the first signal can be the same as the start time unit of the frequently transmitted common signal set, or the start time unit of the first signal can have a first time interval between the start position of the radio frame (or time slot) where the transmission pattern of the common signal is located. The first time interval can be a predefined value or can be configured by the network device.

[0110] When the first signal is received by the terminal device as a common signal, the terminal device can directly complete the channel measurement based on the common signal. For example, the first signal can be LP-SS, SSB, and SSB includes PSS, SSS and PBCH.

[0111] Meanwhile, the first signal, serving as a common signal, may also include the common signal itself. That is, the first signal may also include a channel measurement signal (hereinafter referred to as the fourth signal) in addition to the common signal, used to assist the common signal in completing channel measurement when channel measurement cannot be completed based solely on the common signal. In this case, the fourth signal can be transmitted with the common signal at the same frequency. That is, the frequency domain resources corresponding to the fourth signal and the common signal are different, while the corresponding time domain resources are at least partially the same (i.e., completely the same or partially the same).

[0112] Furthermore, the start time unit of the fourth signal can be defined based on the transmission pattern of the common signal. Specifically, the start time unit of the fourth signal can be the same as the start time unit of the common signal set, or the start time unit of the fourth signal can have a second time interval between it and the start position of the radio frame (or time slot) where the common signal set is located. The second time interval can be a predefined value or can be configured by the network device.

[0113] It should be noted that the one or more first signals may include a cell identifier and an index corresponding to each first signal; and / or, the first signal includes a first sequence and / or first system information, wherein the first sequence and / or first system information includes at least one of the index corresponding to each first signal and the cell identifier. This embodiment of the invention does not limit the way information is carried in the first signal, that is, the first signal may include a first sequence and / or first system information, and the first sequence and / or first system information may carry a cell identifier and one or all of the index corresponding to each first signal. The difference is that the first sequence stores information in the form of a sequence, while the first system information stores information in the form of a resource block.

[0114] It should be noted that, based on long-period or semi-static measurements of the channel, the transmission period of the first signal can be predefined or configured by the network device. For example, the transmission period of the first signal can be the same as the transmission period of the common signal, or the transmission period of the first signal can be an integer multiple of the transmission period of the common signal. Furthermore, the transmission period of the first signal can also be configured by the network device, for example, based on an indication of the first signal.

[0115] Step 102: Send first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: an index of at least one first signal; an index of a first precoding matrix, the index of the first precoding matrix being associated with the at least one first signal.

[0116] In this embodiment, after receiving one or more first signals, the terminal device performs channel measurement based on the one or more first signals and sends the measured first information to the network device. The first information is channel state information or basic spatial information, so that the network device can further send channel measurement signals based on the first information when there is a data transmission requirement. The first information may include at least the index of at least one first signal and / or the index of a first precoding matrix.

[0117] Wherein, the at least one first signal is a channel measurement signal selected by the terminal device from the one or more first signals by performing channel measurement on the received one or more first signals (based on the channel quality corresponding to each first signal), that is, a channel measurement signal with better channel quality "recommended" by the terminal device, and the index of the at least one first signal is the index corresponding to the channel measurement signal selected by the terminal device from the one or more first signals.

[0118] The index of the first precoding matrix is ​​the index corresponding to the precoding matrix selected by the terminal device from the standardized precoding codebook based on the selected at least one first signal. That is, the index of the first precoding matrix is ​​associated with the at least one first signal. The embodiments of the present invention do not impose specific restrictions on the way the terminal device selects the first precoding matrix based on at least one first signal.

[0119] It should be noted that the first information sent by the terminal device may also include channel quality information corresponding to the at least one first signal (index). The channel quality information may include one or more of the following indicators: Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Received Signal Strength Indicator (RSSI), and Signal to Interference plus Noise Ratio (SINR).

[0120] In some embodiments, the first numerical value representing the number of indices of at least one first signal included in the first information is a predefined value, or the method further includes: receiving a second indication, the second indication being used to indicate the number of indices of the at least one first signal.

[0121] In this embodiment, the number of indices of at least one first signal included in the first information sent by the terminal device can be predefined, that is, the number of first signals that the terminal device can select can be preset; or it can be determined by receiving a second instruction sent by the network device, that is, the terminal device can select the first signal according to the number of indexes of the first signal indicated in the received second instruction, that is, the number of indexes of at least one first signal can be configured and indicated by the network device.

[0122] In some embodiments, the method further includes: receiving first threshold information; the channel quality of the at least one first signal is greater than or equal to the first threshold corresponding to the first threshold information.

[0123] In this embodiment, the terminal device can select at least one first signal that meets the first threshold corresponding to the first threshold information by receiving the first threshold information configured by the network device. That is, the channel quality of each of the at least one first signal selected by the terminal device is greater than or equal to the first threshold corresponding to the first threshold information.

[0124] For example, if the number of indexes of the first signal to be selected by the terminal device is determined to be 5, then based on the received first threshold information, it is necessary to select 5 first signals whose channel quality is greater than or equal to the first threshold corresponding to the first threshold information, that is, to select the 5 first signals with the best channel quality.

[0125] It should be noted that the embodiments of the present invention do not specifically limit the content of the first threshold information; it can represent a threshold for channel quality. For example, the first threshold corresponding to the first threshold information may include thresholds corresponding to one or more indicators for representing channel quality information, such as a first indicator threshold for RSRP, a second indicator threshold for RSRQ, a third indicator threshold for RSSI, a fourth indicator threshold for SINR, etc. The first threshold information may also include identifiers corresponding to one or more indicator thresholds for representing channel quality information; that is, when multiple indicator thresholds are pre-configured, the first threshold is indicated by the identifier corresponding to each indicator threshold.

[0126] In some embodiments, the time unit in which the second transmission resource of the first information is located is separated from the start time unit or end time unit of the first transmission resource of the first signal by a first offset, the first offset being a predefined value; or, the method further includes: receiving a first indication, the first indication being used to indicate the first offset.

[0127] In this embodiment, the first information needs to be transmitted on the second transmission resource (i.e., the uplink transmission resource). Compared with the transmission time unit of the first signal, the transmission time unit occupied by the first information on the second transmission resource is shorter. That is, the start time unit and end time unit of the transmission time unit of the first information can be disregarded separately. The time unit where the second transmission resource of the first information is located is separated from the start time unit or end time unit of the first transmission resource of the first signal by a first offset.

[0128] The embodiments of the present invention do not impose specific limitations on the method of determining the first offset. For example, the first offset may be a predefined value, that is, the interval between the time unit where the second transmission resource of the first information is located and the start time unit or end time unit of the first transmission resource of the first signal is pre-set; or it may be determined by receiving a first instruction sent by the network device, that is, the terminal device can determine the first offset according to the received first instruction, that is, the first offset may be configured and indicated by the network device.

[0129] Furthermore, based on long-period or semi-static measurements of the channel, the transmission period of the first information can be predefined or configured by the network device, and the transmission period of the first information is associated with the first signal. For example, the transmission period of the first information on the transmission resources can be predefined to be the same as the transmission period of the common signal, or the transmission period of the first information on the transmission resources can be an integer multiple of the transmission period of the common signal.

[0130] Based on steps 101 and 102 above, Figure 5 This is a flowchart illustrating the channel measurement method according to an embodiment of the present invention. Figure 2 ;like Figure 5 As shown, the method further includes:

[0131] Step 103: Receive a second signal, the second signal being associated with the first signal and / or the first information;

[0132] Step 104: Send second information; wherein the second information is associated with the second signal, and the second information includes one or more of the following: rank indicator; second signal index indicator, the second signal index indicator being used to indicate one or more indices in the index of the at least one first signal; column indicator, the column indicator being used to indicate one or more column vectors in the first precoding matrix; modulation and coding indicator; interference information indicator.

[0133] In this embodiment, after sending first information representing basic spatial information to the network device, the terminal device receives a second signal sent by the network device based on data transmission requirements, and performs channel measurement on the second signal. The second signal is associated with the first signal and / or the first information. That is, the second signal received by the terminal device is related to one or more received first signals, and / or to at least one first signal selected by the terminal device. The specific association will be described in detail later.

[0134] It should be noted that the second signal is used for (in-band) measurements initiated by network devices based on data transmission needs; that is, the second signal needs to be transmitted aperiodically or once on the corresponding third transmission resource. This is because the second signal is associated with the first signal and / or the first information.

[0135] In some implementations, the second signal is also used to indicate the receipt of first control information, which indicates the transmission resources for data transmission.

[0136] In this embodiment, since the second signal received by the terminal device is sent by the network device when there is a data transmission requirement, the second signal can not only be used to measure the channel, but also to instruct the terminal device to receive the first control information, which can also be called the first scheduling information, and is used to indicate the transmission resources for data transmission. That is, after receiving the second signal, the terminal device can also receive the first control information indicating the transmission resources for data transmission based on the second signal.

[0137] It is understandable that, as a receiving mechanism of a terminal device, the terminal device can directly receive the second signal sent by the network side for channel measurement when there is a data transmission requirement on the network side, and at the same time receive the first control information for transmission resources to indicate data transmission based on the second signal.

[0138] It should be noted that the embodiments of the present invention do not impose specific limitations on the transmission resources of the first control information and the data transmission indicated by the first control information. For example, the first control information may be downlink control information (DCI) or a low-power wake-up signal (LP-WUS). The transmission resources for the data transmission may include time-domain and / or frequency-domain resources of the data to be transmitted.

[0139] In some embodiments, prior to step 103, the method further includes receiving a third signal, the third signal being used to indicate receiving the second signal.

[0140] In this embodiment, the terminal device can receive a third signal sent by the network device before receiving the second signal, and receive the second signal according to the indication of the third signal. The third signal can be a reference signal used to instruct the terminal device to receive the second signal. That is, the terminal device can receive the second signal based on the received third signal.

[0141] In some implementations, the third signal is also used to indicate the receipt of second control information, which indicates the transmission resources for data transmission.

[0142] In this embodiment, the third signal can be used not only to instruct the terminal device to receive the second signal, but also to instruct the terminal device to receive second control information. This second control information, also known as second scheduling information, is used to indicate the transmission resources for data transmission. That is, the terminal device can receive the second signal based on the third signal, and simultaneously receive the second control information indicating the transmission resources for data transmission based on the third signal. This embodiment of the invention does not impose specific limitations on the third signal; for example, it can be a reference signal.

[0143] It is understandable that, as another receiving mechanism for the terminal device, when there is a data transmission requirement on the network side, the terminal device can first receive a third signal sent by the network indicating the reception of a second signal and a third signal indicating the reception of second control information, and then receive the second signal for channel measurement based on the third signal, and simultaneously receive the second control information for transmission resources indicating data transmission based on the third signal. This embodiment of the invention does not impose a fixed restriction on the order in which the terminal device receives the second signal and the second control information based on the third signal.

[0144] It should be noted that the embodiments of the present invention do not impose specific limitations on the transmission resources of the data transmission indicated by the second control information and the data transmission indicated by the second control information. For example, the second control information may be DCI or LP-WUS. The transmission resources of the data transmission may include time-domain and / or frequency-domain resources of the data to be transmitted. In some optional embodiments, the second control information may be the same as or different from the first control information described above.

[0145] In some embodiments, a third offset is spaced between the time unit where the third transmission resource of the second signal is located and the time unit where the fifth transmission resource of the third signal is located, the third offset being a predefined value; or, the method further includes receiving a fourth indication, the fourth indication being used to indicate the third offset.

[0146] In this embodiment, when the terminal device adopts a receiving mechanism based on receiving the second signal and the second control information using the third signal, the third signal needs to be transmitted on the fifth transmission resource. The time unit occupied by the third signal on the fifth transmission resource is separated from the time unit occupied by the second signal on the third transmission resource by a third offset.

[0147] The embodiments of the present invention do not impose specific limitations on the method of determining the third offset. For example, the third offset can be a predefined value, that is, the time interval between the time unit where the third transmission resource of the second signal is located and the time unit where the fifth transmission resource of the third signal is located can be preset; the third offset can also be determined by receiving a fourth indication sent by the network device, that is, the terminal device can determine the third offset according to the received fourth indication, that is, the third offset can be configured and indicated by the network device.

[0148] In some embodiments, prior to step 103, the method further includes receiving third control information, the third control information being used to indicate transmission resources for receiving the second signal and data transmission.

[0149] In this embodiment, the terminal device can receive third control information before receiving the second signal. This third control information indicates the transmission resources for receiving the second signal and transmitting data. That is, the terminal device can receive the second signal for channel measurement and simultaneously receive the transmission resources for data transmission based on the received third control information. This third control information can also be called third scheduling information, used to indicate the transmission resources for data transmission.

[0150] It is understandable that, as another receiving mechanism for terminal devices, when there is a data transmission requirement on the network side, the terminal device can first receive the third control information sent by the network indicating the reception of the second signal and the transmission resources for data transmission, and then receive the second signal for channel measurement based on the third control information, while simultaneously receiving the transmission resources for data transmission based on the third control information. This embodiment of the invention does not impose a fixed restriction on the order in which the terminal device receives the second signal and the transmission resources for data transmission based on the third control information.

[0151] It should be noted that the embodiments of the present invention do not impose specific limitations on the transmission resources of the third control information and the data transmission indicated by the third control information. For example, the third control information may be DCI or LP-WUS. The transmission resources of the data transmission may include time-domain and / or frequency-domain resources of the data to be transmitted. In some optional embodiments, the third control information may be the same as or different from the first control information and / or the second control information described above.

[0152] Furthermore, when the terminal device adopts this receiving mechanism, the second signal can also be used as a synchronization signal for time-domain, frequency-domain, or spatial-domain synchronization (tracking).

[0153] In some embodiments, a fourth offset is spaced between the time unit where the third transmission resource of the second signal is located and the time unit where the sixth transmission resource of the third control information is located, the fourth offset being a predefined value; or, the method further includes receiving a fifth indication, the fifth indication being used to indicate the fourth offset.

[0154] In this embodiment, under the receiving mechanism of the above-mentioned terminal device that receives the second signal and data transmission based on the third control information, the third control information needs to be transmitted on the sixth transmission resource. The time unit occupied by the third control information on the sixth transmission resource is separated from the time unit occupied by the second signal on the third transmission resource by a fourth offset.

[0155] The embodiments of the present invention do not impose specific limitations on the method of determining the fourth offset. For example, the fourth offset can be a predefined value, that is, the time interval between the time unit where the third transmission resource of the second signal is located and the time unit where the sixth transmission resource of the third control information is located can be preset; the fourth offset can also be determined by receiving a fifth indication sent by the network device, that is, the terminal device can determine the fourth offset according to the received fifth indication, that is, the fourth offset can be configured and indicated by the network device.

[0156] In some implementations, the second signal is associated with the first signal and / or the first information, including at least one of the following: the first signal and / or the first information is associated with a first reporting configuration; the first signal and / or the first information is associated with a first reporting configuration, and the second signal is associated with a second reporting configuration, wherein the first reporting configuration and the second reporting configuration are associated; or the second signal is associated with an index of the at least one first signal and / or an index of the first precoding matrix.

[0157] In this embodiment, the association between the second signal and the first signal and / or the first information can be achieved in the following ways:

[0158] The first method involves associating a first signal and / or first information with a second signal using a first reporting configuration. Specifically, the terminal device may receive a first reporting configuration sent by the network device before sending the first information. This first reporting configuration may include configuration information configured by the network device related to the first signal and / or the first information (e.g., the transmission period and resources of the first signal, the second transmission resources of the first information, the first offset, the first value, etc.), and configuration information related to the second signal (e.g., the third transmission resources, the third offset, the fourth offset, etc. of the second signal). That is, by associating the configuration information related to the first signal and / or the first information, and the configuration information related to the second signal, with the first reporting configuration, the second signal is associated with the first signal and / or the first information.

[0159] The second approach involves associating a first signal and / or first information with a first reporting configuration, and a second signal with a second reporting configuration. Specifically, the terminal device may receive a first reporting configuration from the network device before sending the first information. This first reporting configuration may include configuration information configured by the network device related to the first signal and / or the first information (e.g., the transmission period and resources of the first signal, the second transmission resources of the first information, a first offset, a first value, etc.). The terminal device may also receive a second reporting configuration from the network device before receiving the second signal. This second reporting configuration may include configuration information configured by the network device related to the second signal (e.g., the third transmission resources, a third offset, a fourth offset, etc. of the second signal). The second signal is then associated with the first signal and / or the first information by receiving (i.e., the network device-configured) indication information that indicates the association between the first and second reporting configurations.

[0160] The third method involves associating the second signal with the index of at least one first signal and / or the index of the first precoding matrix. Specifically, the terminal device can achieve this by using previously received indication information that indicates the association of the second signal with the index of at least one first signal included in the first information and / or the index of the first precoding matrix.

[0161] It is understood that when the second signal is associated with the first information, the second signal may have the same transmission resources as at least one first signal selected by the terminal device from one or more first signals that meets the channel quality requirements, so that the terminal device can further measure the channel corresponding to the at least one first signal in the reported first information, thereby realizing data transmission or data transmission scheduling.

[0162] In this embodiment, after receiving the second signal, the terminal device performs (as-in-the-path) measurement based on the second signal and transmits the obtained second information to the network device, so that the network device can realize data transmission or data transmission scheduling based on the second information. The second information may include stream count indication information and / or channel quality indication information.

[0163] Specifically, the stream count indication information is used to indicate information related to the optimal number of transmission streams recommended by the terminal device, and may include one or more of RI, second signal index indication, and column indication; the channel quality indication information is used to indicate the channel conditions measured by the terminal device for the second signal, and may include modulation and coding indication, and / or interference information indication.

[0164] RI is used to indicate the optimal number of transmission streams recommended by the terminal device, which is the maximum number of independent data streams that the terminal device recommends can be transmitted simultaneously without interference.

[0165] The second signal index indicates one or more indices used to indicate the indexes of the at least one first signal, that is, the index of the second signal recommended by the terminal device based on channel quality among the one or more signals corresponding to the second signal;

[0166] The column indicator is used to indicate one or more column vectors in the first precoding matrix, that is, the columns (i.e. precoding vectors) recommended by the terminal device in the precoding matrix indicated by the precoding index corresponding to the recommended second signal.

[0167] The modulation and coding indication is used to indicate the modulation and coding scheme (MCS, Modulation and Coding Scheme) or CQI recommended for data transmission by the terminal device based on the data transmission resources.

[0168] The interference information indicator is used to indicate the interference covariance matrix of the interference signal.

[0169] In some implementations, the modulation and coding indication is associated with at least one of the rank indication, the second signal index indication, and the column indication; and / or, the interference information indication is associated with at least one of the rank indication, the second signal index indication, and the column indication.

[0170] In this embodiment, the channel quality indication information in the second information is associated with the stream number indication information; that is, one channel quality indication information indicates the channel quality under a specific stream number indication information. In other words, one channel quality indication information corresponds to a second signal recommended by the terminal device that meets the data transmission requirements.

[0171] Specifically, the modulation and coding indication in the channel quality indication information may be associated with at least one of the rank indication, the second signal index indication, and the column indication in the stream number indication information; and / or, the interference information indication in the channel quality indication information may be associated with at least one of the rank indication, the second signal index indication, and the column indication in the stream number indication information.

[0172] In some embodiments, a second offset is spaced between the time unit where the fourth transmission resource of the second information is located and the time unit where the third transmission resource of the second signal is located, the second offset being a predefined value; or, the method further includes receiving a third indication, the third indication being used to indicate the second offset.

[0173] In this embodiment, the second information needs to be transmitted on the fourth transmission resource (i.e., the uplink transmission resource). Since the second information is only used to carry channel measurement information, the transmission time unit occupied by the second information on the fourth transmission resource is short. That is, the start time unit and end time unit of the transmission time unit of the second information can be ignored. The time unit where the fourth transmission resource of the second information is located is separated from the time unit where the third transmission resource of the second signal is located by a second offset.

[0174] It should be noted that the embodiments of the present invention do not impose specific limitations on the method of determining the second offset. For example, the second offset can be a predefined value, that is, the time interval between the fourth transmission resource of the second information and the third transmission resource of the second signal is pre-set; the second offset can also be determined by receiving a third indication sent by the network device, that is, the terminal device can determine the second offset according to the received third indication, that is, the second offset can be configured and indicated by the network device.

[0175] This invention also proposes a channel measurement method. Figure 6 This is a flowchart illustrating the channel measurement method according to an embodiment of the present invention. Figure 3 ;like Figure 6 As shown, the method is applied to a network device, and the method includes:

[0176] Step 201: Send one or more first signals.

[0177] Here, the network device can be a wireless access point (or device) that connects the terminal to the wireless network, also known as a base station. It can be an evolved base station in an LTE system, or a wireless controller in a cloud wireless access network scenario. Alternatively, the network device can be a relay station, access point, vehicle-mounted device, wearable device, or network device in a 5G network or a network device in a future evolved wireless communication network. It can also be one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node that constitutes a next-generation base station or transmission point, such as a baseband unit or a distributed unit. The embodiments of this application are not limited to this.

[0178] Furthermore, the terminal device in this embodiment of the invention can also be referred to as a terminal, which is a device with wireless transceiver capabilities. The terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on water (e.g., ships and other water transport); and it can also be deployed in the air (e.g., airplanes, drones, and satellites). The terminal device can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality terminal device, augmented reality terminal device, wireless terminal device in industrial control, wireless terminal device in autonomous driving, wireless terminal device in telemedicine, wireless terminal device in smart grids, wireless terminal device in transportation safety, wireless terminal device in smart cities, or wireless terminal device in smart homes. The terminal device can also be fixed or mobile. This application embodiment does not limit this.

[0179] In this embodiment, the network device sends one or more first signals to the terminal device so that the terminal device can measure the underlying airspace information based on the one or more first signals.

[0180] In some implementations, the first signal includes at least one or more of the following: SSB; PSS; SSS; PBCH; LP-SS.

[0181] In this embodiment, the one or more first signals transmitted by the network device can be one or more of SSB, PSS, SSS, PBCH, and LP-SS. Furthermore, the first signal can be a channel measurement signal independent of the common signal, or it can be the common signal.

[0182] When the first signal is transmitted by the network device as a channel measurement signal independent of the common signal, the frequency domain resources corresponding to the first signal and the common signal are different, and the corresponding time domain resources are at least partially the same (i.e. completely the same or partially the same). For example, the first signal can be SSB, and SSB includes PSS, SSS and PBCH.

[0183] Furthermore, in this case, the start time unit of the first signal can be defined based on the transmission pattern of the common signal. Specifically, the start time unit of the first signal can be the same as the start time unit of the frequently transmitted common signal set, or the start time unit of the first signal can have a first time interval between the start position of the radio frame (or time slot) where the corresponding transmission pattern of the common signal is located. The first time interval can be determined by the network device by sending indication information to indicate the first time interval, or it can be a predefined value.

[0184] When a network device transmits a first signal as a common signal, the terminal device can directly perform channel measurement based on this common signal. For example, the first signal can be one or more of LP-SS, SSB, PSS, SSS and PBCH.

[0185] Meanwhile, the first signal, serving as a common signal, may also include the common signal itself. That is, the first signal may also include a channel measurement signal (hereinafter referred to as the fourth signal) in addition to the common signal. This fourth signal is used by the terminal device to assist the common signal in completing channel measurement when channel measurement cannot be completed based solely on the common signal. In this case, the fourth signal can be transmitted with the common signal at the same frequency. In other words, the frequency domain resources corresponding to the fourth signal and the common signal are different, but their corresponding time domain resources are at least partially the same (i.e., completely identical or partially identical).

[0186] Furthermore, the start time unit of the fourth signal can be defined based on the transmission pattern of the common signal. Specifically, the start time unit of the fourth signal can be the same as the start time unit of the common signal set, or the start time unit of the fourth signal can have a second time interval between it and the start position of the radio frame (or time slot) where the common signal set is located. The second time interval can be determined by the network device by sending indication information to indicate the first time interval, or it can be a predefined value.

[0187] It should be noted that the one or more first signals received by the network device may include a cell identifier and an index corresponding to each first signal; and / or, the first signal includes a first sequence and / or first system information, wherein the first sequence and / or first system information includes at least one of the index corresponding to each first signal and the cell identifier. This embodiment of the invention does not limit the way information is carried in the first signal, that is, the first signal may include a first sequence and / or first system information, and the first sequence and / or first system information may carry a cell identifier and one or all of the index corresponding to each first signal. The difference is that the first sequence stores information in the form of a sequence, while the first system information stores information in the form of a resource block.

[0188] It should be noted that, based on long-period or semi-static measurements of the channel, the transmission period of the first signal can be configured by the network device or predefined. For example, the transmission period of the first signal can be an integer multiple of the transmission period of the common signal, or the transmission period of the first signal can be consistent with the transmission period of the common signal.

[0189] Step 202: Receive first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: an index of at least one first signal; an index of a first precoding matrix, the index of the first precoding matrix being associated with the at least one first signal.

[0190] In this embodiment, after sending one or more first signals, the network device receives first information sent by the terminal device after performing channel measurements on the one or more first signals. This first information is channel state information or basic spatial information, which allows the network device to further send channel measurement signals based on the first information when data transmission is required. The first information may include at least an index of at least one first signal and / or an index of a first precoding matrix.

[0191] Wherein, the at least one first signal is a channel measurement signal selected by the terminal device from the one or more first signals by performing channel measurement on the received one or more first signals, based on the channel quality corresponding to each first signal, that is, a channel measurement signal with better channel quality "recommended" by the terminal device, and the index of the at least one first signal is the index corresponding to the channel measurement signal selected by the terminal device from the one or more first signals.

[0192] The index of the first precoding matrix is ​​the index corresponding to the precoding matrix selected by the terminal device from the standardized precoding codebook based on the selected at least one first signal, that is, the index of the first precoding matrix is ​​associated with the at least one first signal.

[0193] It should be noted that the first information received by the network device may also include channel quality information corresponding to the at least one first signal (index), and the channel quality information may include one or more indicators among RSRP, RSRQ, RSSI and SINR.

[0194] In some embodiments, the method further includes sending a second indication, the second indication being used to indicate the index number of the at least one first signal.

[0195] In this embodiment, the number of indices of at least one first signal included in the first information received by the network device can be determined by receiving a second instruction sent by the network device. That is, the terminal device can select the first signal according to the number of indices of the first signal indicated in the received second instruction. In other words, the number of indices of at least one first signal can be configured and indicated by the network device.

[0196] Furthermore, the number of indices of the at least one first signal can also be predefined, that is, the number of first signals that the terminal device can select can be preset.

[0197] In some embodiments, the method further includes: sending first threshold information, wherein the channel quality of the at least one first signal is greater than or equal to a first threshold corresponding to the first threshold information.

[0198] In this embodiment, the network device can send first threshold information to the terminal device, enabling the terminal device to select at least one first signal that meets the first threshold corresponding to the first threshold information based on the received first threshold information. That is, the channel quality of each of the at least one first signal is greater than or equal to the first threshold corresponding to the first threshold information.

[0199] It should be noted that the embodiments of the present invention do not specifically limit the content of the first threshold information; it can represent a threshold for channel quality. For example, the first threshold corresponding to the first threshold information may include thresholds corresponding to one or more indicators for representing channel quality information, such as a first indicator threshold for RSRP, a second indicator threshold for RSRQ, a third indicator threshold for RSSI, a fourth indicator threshold for SINR, etc. The first threshold information may also include identifiers corresponding to one or more indicator thresholds for representing channel quality information; that is, when multiple indicator thresholds are pre-configured, the first threshold is indicated by the identifier corresponding to each indicator threshold.

[0200] In some embodiments, the method further includes: sending a first indication, the first indication being used to indicate a first bias, the first bias being the interval between the time unit in which the second transmission resource of the first information is located and the start time unit or end time unit of the first transmission resource of the first signal.

[0201] In this embodiment, the first information needs to be transmitted on the second transmission resource (i.e., the uplink transmission resource). Compared with the transmission time unit of the first signal, the transmission time unit occupied by the first information on the second transmission resource is shorter. That is, the start time unit and end time unit of the transmission time unit of the first information can be disregarded separately. The time unit where the second transmission resource of the first information is located is separated from the start time unit or end time unit of the first transmission resource of the first signal by a first offset.

[0202] The embodiments of the present invention do not impose specific limitations on the method of determining the first bias. For example, the first bias may be determined by a first indication sent by a network device, that is, the network device sends a first indication to the terminal device, so that the terminal device can determine the first bias according to the first indication, that is, the first bias may be configured by the network device.

[0203] In addition, the first bias can also be a predefined value, that is, the interval between the time unit where the second transmission resource of the first information is located and the start time unit or end time unit of the first transmission resource of the first signal can be preset.

[0204] It should be noted that, based on long-period or semi-static measurements of the channel, the transmission period of the first information can be configured by the network device or predefined, and the transmission period of the first information is associated with the first signal. For example, the transmission period of the first information on the transmission resource can be an integer multiple of the transmission period of the common signal, or the transmission period of the first information on the transmission resource can be predefined to be consistent with the transmission period of the common signal.

[0205] As an example, Figure 7 This is a schematic diagram of the process of long-period channel measurement according to an embodiment of the present invention; as shown below. Figure 7 As shown, the specific process of implementing long-period channel measurement through network devices and terminal devices in this embodiment of the invention is as follows:

[0206] Step 301: The network device sends a plurality of first signals to the terminal device on the first transmission resource, wherein the plurality of first signals are channel measurement signals including a common signal and other measurement signals (i.e., third signals) other than the common signal;

[0207] Step 302: The terminal device performs channel measurement based on the received multiple first signals and feeds back first information including the measured basic spatial information to the network device on the second transmission resource. The unit where the second transmission resource of the first information is located is offset by a first time interval from the start time unit of the first transmission resource of the first signal.

[0208] Step 303: After receiving the first information, the network device retransmits multiple first signals to the terminal device on the first transmission resource according to the first transmission cycle of the pre-configured first signal;

[0209] Step 304: The terminal device re-performs channel measurement based on the received multiple first signals, and re-feeds the first information to the network device on the second transmission resource according to the second transmission period of the pre-configured first information, thereby realizing long-period channel measurement.

[0210] Based on steps 201 and 202 above, Figure 8 This is a flowchart illustrating the channel measurement method according to an embodiment of the present invention. Figure 4 ;like Figure 8 As shown, the method further includes:

[0211] Step 203: Send a second signal, the second signal being associated with the first signal and / or the first information;

[0212] Step 204: Receive second information; wherein the second information is associated with the second signal, and the second information includes one or more of the following: rank indicator; second signal index indicator, the second signal index indicator being used to indicate one or more indices in the index of the at least one first signal; column indicator, the column indicator being used to indicate one or more column vectors in the first precoding matrix; modulation and coding indicator; interference information indicator.

[0213] In this embodiment, after receiving the first information representing basic spatial information sent by the terminal device, the network device sends a second signal to the terminal device based on data transmission requirements, so that the terminal device can perform channel measurement on the second signal. The second signal is associated with the first signal and / or the first information. That is, the second signal sent by the network device is related to one or more of the first signals sent, and / or to at least one of the first signals in the received first information. The specific association will be described in detail later.

[0214] It should be noted that the second signal is used for (in-band) measurements initiated by network devices based on data transmission requirements, that is, the second signal needs to be transmitted aperiodically or once on the corresponding third transmission resource.

[0215] In some implementations, the second signal is also used to indicate the receipt of first control information, which indicates the transmission resources for data transmission.

[0216] In this embodiment, since the network device needs to send a second signal when there is a data transmission requirement, the second signal can not only be used to measure the channel, but also to instruct the terminal device to receive the first control information, which can also be called the first scheduling information, and is used to indicate the transmission resources for data transmission. That is, after the network device sends the second signal to the terminal device, the terminal device can receive the first control information indicating the transmission resources for data transmission based on the second signal.

[0217] It is understandable that, as a transmission mechanism of network devices, network devices can directly send a second signal to terminal devices to indicate channel measurement and receive first control information when there is a need for data transmission. This allows the terminal devices to perform channel measurement based on the second signal and simultaneously receive first control information to indicate transmission resources based on the second signal.

[0218] It should be noted that the embodiments of the present invention do not impose specific limitations on the transmission resources of the first control information and the data transmission indicated by the first control information. For example, the first control information may be DCI or LP-WUS. The transmission resources for the data transmission may include time-domain and / or frequency-domain resources of the data to be transmitted, etc.

[0219] In some embodiments, prior to step 203, the method further includes sending a third signal, the third signal being used to indicate receipt of the second signal.

[0220] In this embodiment, the network device may send a third signal before sending the second signal to the terminal device. The third signal may be a reference signal used to instruct the terminal device to receive the second signal. That is, the terminal device may receive the second signal based on the received third signal.

[0221] In some implementations, the third signal is also used to indicate the receipt of second control information, which indicates the transmission resources for data transmission.

[0222] In this embodiment, the third signal sent by the network device before sending the second signal can be used not only to instruct the terminal device to receive the second signal, but also to instruct the terminal device to receive second control information. This second control information, also known as second scheduling information, is used to indicate the transmission resources for data transmission. This embodiment of the invention does not impose specific limitations on the third signal; for example, it can be a reference signal.

[0223] Understandably, as another transmission mechanism of network devices, when there is a need for data transmission, network devices can first send a third signal to indicate the reception of a second signal and to indicate the reception of a second control information, and then send the second signal, so that the terminal device can receive the second signal for channel measurement based on the third signal, and at the same time receive the second control information for indicating the transmission resources for data transmission based on the third signal.

[0224] It should be noted that the embodiments of the present invention do not impose specific limitations on the transmission resources of the data transmission indicated by the second control information and the data transmission indicated by the second control information. For example, the second control information may be DCI or LP-WUS. The transmission resources of the data transmission may include time-domain and / or frequency-domain resources of the data to be transmitted. In some optional embodiments, the second control information may be the same as or different from the first control information described above.

[0225] In some embodiments, the method further includes sending a fourth indication for indicating the third offset, the third offset being the interval between the time unit in which the third transmission resource of the second signal is located and the time unit in which the fifth transmission resource of the third signal is located.

[0226] In this embodiment, when the network device adopts a transmission mechanism of sending the third signal first and then the second signal, the third signal needs to be transmitted on the fifth transmission resource. The time unit occupied by the third signal on the fifth transmission resource is separated from the time unit occupied by the second signal on the third transmission resource by a third offset.

[0227] The embodiments of the present invention do not impose specific limitations on the method of determining the third bias. For example, the third bias may be determined by the network device sending a fourth indication to the terminal device, that is, the terminal device can determine the third bias according to the received fourth indication, and the third bias may be configured by the network device.

[0228] In addition, the third bias can also be a predefined value, that is, the time interval between the time unit where the third transmission resource of the second signal is located and the time unit where the fifth transmission resource of the third signal is located can be preset.

[0229] In some embodiments, prior to step 203, the method further includes sending third control information, the third control information being used to indicate the transmission resources for receiving the second signal and transmitting the data.

[0230] In this embodiment, the network device may send third control information before sending the second signal. This third control information indicates the transmission resources for receiving the second signal and transmitting data. That is, by sending the third control information to the terminal device, the network device enables the terminal device to receive the second signal used for channel measurement and simultaneously receive the transmission resources for data transmission based on the third control information. This third control information can also be called third scheduling information, used to indicate the transmission resources for data transmission.

[0231] Understandably, as another transmission mechanism of network devices, when there is a need for data transmission, network devices can first send third control information to indicate the reception of a second signal and the transmission resources for receiving data transmission, and then send the second signal, so that the terminal device can receive the second signal for channel measurement based on the third control information, and at the same time receive the transmission resources for data transmission based on the third control information.

[0232] It should be noted that the embodiments of the present invention do not impose specific limitations on the transmission resources of the third control information and the data transmission indicated by the third control information. For example, the third control information may be DCI or LP-WUS. The transmission resources of the data transmission may include time-domain and / or frequency-domain resources of the data to be transmitted. In some optional embodiments, the third control information may be the same as or different from the first control information and / or the second control information described above.

[0233] Furthermore, when the network device employs this transmission mechanism, the second signal can also be used as a synchronization signal for time-domain, frequency-domain, or spatial-domain synchronization.

[0234] In some embodiments, the method further includes sending a fifth indication, the fifth indication being used to indicate the fourth bias, the fourth bias being the interval between the time unit where the third transmission resource of the second signal is located and the time unit where the sixth transmission resource of the third control information is located.

[0235] In this embodiment, under the receiving mechanism of the above-mentioned network device, which first sends the third control information and then sends the second signal, the third control information needs to be transmitted on the sixth transmission resource. The time unit occupied by the third control information on the sixth transmission resource and the time unit occupied by the second signal on the third transmission resource are separated by a fourth offset.

[0236] The embodiments of the present invention do not impose specific limitations on the method of determining the fourth bias. For example, the fourth bias may be determined by receiving a fifth indication sent by the network device, that is, the terminal device can determine the fourth bias according to the received fifth indication, and the fourth bias may be configured and indicated by the network device.

[0237] In addition, the fourth bias can also be a predefined value, that is, the time interval between the time unit where the third transmission resource of the second signal is located and the time unit where the sixth transmission resource of the third control information is located can be preset.

[0238] In some implementations, the second signal is associated with the first signal and / or the first information, including at least one of the following: the first signal and / or the first information is associated with a first reporting configuration; the first signal and / or the first information is associated with a first reporting configuration, and the second signal is associated with a second reporting configuration, wherein the first reporting configuration and the second reporting configuration are associated; or the second signal is associated with an index of the at least one first signal and / or an index of the first precoding matrix.

[0239] In this embodiment, the association between the second signal and the first signal and / or the first information can be achieved in the following ways:

[0240] The first method involves associating a first signal and / or first information with a second signal using a first reporting configuration. Specifically, the network device can send a first reporting configuration to the terminal device before receiving the first information. This first reporting configuration may include configuration information configured by the network device related to the first signal and / or the first information (e.g., the transmission period and resources of the first signal, the second transmission resources of the first information, the first offset, the first value, etc.), and configuration information related to the second signal (e.g., the third transmission resources, the third offset, the fourth offset, etc. of the second signal). That is, by associating the configuration information related to the first signal and / or the first information, and the configuration information related to the second signal, with the first reporting configuration, the second signal is associated with the first signal and / or the first information.

[0241] The second approach involves associating a first signal and / or first information with a first reporting configuration, and a second signal with a second reporting configuration. Specifically, the network device may send a first reporting configuration to the terminal device before receiving the first information. This first reporting configuration may include configuration information configured by the network device related to the first signal and / or the first information (e.g., transmission period and resources of the first signal, second transmission resources of the first information, first offset, first value, etc.). The network device may also send a second reporting configuration to the terminal device before receiving the second signal. This second reporting configuration may include configuration information configured by the network device related to the second signal (e.g., third transmission resources, third offset, fourth offset, etc. of the second signal). Furthermore, an indication message sent prior to indicate the association between the first and second reporting configurations is used to indicate that the second signal is associated with the first signal and / or the first information.

[0242] A third approach: The second signal is associated with the index of at least one first signal and / or the index of the first precoding matrix. Specifically, the network device can achieve this by sending prior indication information indicating that the second signal is associated with the index of at least one first signal included in the first information and / or the index of the first precoding matrix.

[0243] It is understood that, when the second signal is associated with the first information, the second signal may have the same transmission resources as at least one first signal selected by the terminal device from one or more first signals that meets the channel quality requirements, so that the terminal device can further measure the channel corresponding to the at least one first signal in the reported first information, thereby realizing data transmission or data transmission scheduling.

[0244] In this embodiment, after sending a second signal, the network device receives second information sent by the terminal device after performing (as-along-path) measurements based on the second signal, thereby realizing data transmission or data transmission scheduling based on the second information. The second information may include stream count indication information and / or channel quality indication information.

[0245] Specifically, the stream count indication information is used to indicate information related to the optimal number of transmission streams recommended by the terminal device, and may include one or more of RI, second signal index indication, and column indication; the channel quality indication information is used to indicate the channel conditions measured by the terminal device for the second signal, and may include modulation and coding indication, and / or interference information indication.

[0246] RI is used to indicate the optimal number of transmission streams recommended by the terminal device, which is the maximum number of independent data streams that the terminal device recommends can be transmitted simultaneously without interference.

[0247] The second signal index indicates one or more indices used to indicate the indexes of the at least one first signal, that is, the index of the second signal recommended by the terminal device based on channel quality among the one or more signals corresponding to the second signal;

[0248] The column indicator is used to indicate one or more column vectors in the first precoding matrix, that is, the columns (i.e. precoding vectors) recommended by the terminal device in the precoding matrix indicated by the precoding index corresponding to the recommended second signal.

[0249] The modulation and coding indication is used to indicate the terminal device's data transmission resources, and the recommended MCS or CQI for transmission;

[0250] The interference information indicator is used to indicate the interference covariance matrix of the interference signal.

[0251] In some implementations, the modulation and coding indication is associated with at least one of the rank indication, the second signal index indication, and the column indication; and / or, the interference information indication is associated with at least one of the rank indication, the second signal index indication, and the column indication.

[0252] In this embodiment, the channel quality indication information in the second information is associated with the stream number indication information; that is, one channel quality indication information indicates the channel quality under a specific stream number indication information. In other words, one channel quality indication information corresponds to a second signal recommended by the terminal device that meets the data transmission requirements.

[0253] Specifically, the modulation and coding indication in the channel quality indication information may be associated with at least one of the rank indication, the second signal index indication, and the column indication in the stream number indication information; and / or, the interference information indication in the channel quality indication information may be associated with at least one of the rank indication, the second signal index indication, and the column indication in the stream number indication information.

[0254] In some embodiments, the method further includes: sending a third indication, the third indication being used to indicate the second bias, the second bias being the interval between the time unit in which the fourth transmission resource of the second information is located and the time unit in which the third transmission resource of the second signal is located.

[0255] In this embodiment, the second information needs to be transmitted on the fourth transmission resource (i.e., the uplink transmission resource). Since the second information is only used to carry channel measurement information, the transmission time unit occupied by the second information on the fourth transmission resource is short. That is, the start time unit and end time unit of the transmission time unit of the second information can be ignored. The time unit where the fourth transmission resource of the second information is located is separated from the time unit where the third transmission resource of the second signal is located by a second offset.

[0256] It should be noted that the embodiments of the present invention do not impose specific limitations on the method of determining the second bias. For example, the second bias may be determined by receiving a third indication sent by the network device, that is, the network device sends a third indication to the terminal device so that the terminal device can determine the second bias according to the third indication, that is, the second bias may be configured by the network device.

[0257] In addition, the second bias can also be a predefined value, that is, the interval between the time unit where the fourth transmission resource of the second information is located and the time unit where the third transmission resource of the second signal is located can be preset.

[0258] As an example, Figure 9 This is a schematic diagram illustrating the process of long-period channel measurement and in-path channel measurement according to an embodiment of the present invention; as shown. Figure 9 As shown, the specific process of implementing long-period channel measurement and in-path channel measurement through network devices and terminal devices in this embodiment of the invention is as follows:

[0259] Step 401: The network device sends a plurality of first signals to the terminal device on the first transmission resource, wherein the plurality of first signals are channel measurement signals including a common signal and other measurement signals (i.e., third signals) other than the common signal;

[0260] Step 402: The terminal device performs channel measurement based on the received multiple first signals and feeds back first information including the measured basic spatial information to the network device on the second transmission resource. The unit where the second transmission resource of the first information is located is offset by a first time interval from the start time unit of the first transmission resource of the first signal.

[0261] Step 403: After receiving the first information, the network device, when data transmission is required, directly sends a second signal to the terminal device on the third transmission resource for in-path channel measurement and for indicating the receipt of the first control information. The first control information is used to indicate the transmission resource for receiving data transmission.

[0262] Step 404: The terminal device performs further channel measurement based on the received second signal, and feeds back the second information, including stream number indication information and channel quality indication information, measured along the path to the network device on the fourth transmission resource, thereby realizing the along-path channel measurement;

[0263] Step 405: The terminal device receives the first control information based on the indication information carried by the second signal, and receives the data transmitted by the network device based on the received second information based on the first control information, thereby realizing precise scheduling during data transmission.

[0264] Step 406: The network device retransmits multiple first signals to the terminal device on the first transmission resource according to the first transmission cycle of the pre-configured first signal;

[0265] Step 407: The terminal device re-performs channel measurement based on the received multiple first signals, and re-feeds the first information to the network device on the second transmission resource according to the second transmission period of the pre-configured first information, thereby realizing long-period channel measurement.

[0266] In this embodiment, the network device sends multiple first signals to the terminal device over a long period, enabling the terminal device to measure basic spatial information over a long period and feed back the measured first information to the network device. The first information includes an index of at least one first signal and first information associated with the index of a first precoding matrix of the at least one first signal. Based on the first information, the complexity and latency of channel measurement are reduced during actual data transmission, and the impact on user experience rate is reduced.

[0267] Furthermore, when there is a data transmission requirement, a second signal associated with the first signal and / or the first information is sent through the network device, enabling the terminal device to perform (as-in-the-path) channel measurement based on the second signal, thereby providing feedback including the specific number of transmission streams and channel quality (including interference information) so that the network device can achieve accurate data transmission scheduling.

[0268] Furthermore, based on long-period channel measurement and (as-in-the-path) channel measurement, short-period channel measurement signals can be avoided by default on the air interface, thereby reducing the power consumption of network devices; at the same time, terminal devices do not need to frequently receive and calculate channel status, thereby reducing the power consumption of terminal devices.

[0269] Based on the above embodiments, this invention also provides a channel measurement device, which is applied to a terminal device. Figure 10 Schematic diagram of the composition structure of the channel measurement device provided in the embodiments of the present invention Figure 1 ;like Figure 10 As shown, the device includes: a first receiving unit 51 and a first transmitting unit 52, wherein,

[0270] The first receiving unit 51 is used to receive one or more first signals;

[0271] The first transmitting unit 52 is configured to transmit first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: an index of at least one first signal; an index of a first precoding matrix, wherein the index of the first precoding matrix is ​​associated with the at least one first signal.

[0272] In an optional embodiment of the present invention, the first receiving unit 51 is further configured to receive a second signal, the second signal being associated with the first signal and / or the first information;

[0273] The first transmitting unit 52 is further configured to transmit second information; wherein the second information is associated with the second signal, and the second information includes one or more of the following: rank indication; second signal index indication, the second signal index indication being used to indicate one or more indices in the index of the at least one first signal; column indication, the column indication being used to indicate one or more column vectors in the first precoding matrix; modulation and coding indication; interference information indication.

[0274] In an optional embodiment of the present invention, the time unit where the second transmission resource of the first information is located is separated from the start time unit or end time unit of the first transmission resource of the first signal by a first offset, the first offset being a predefined value; or, the first receiving unit 51 is further configured to receive a first indication, the first indication being used to indicate the first offset.

[0275] In an optional embodiment of the present invention, the first value representing the number of indexes of at least one first signal included in the first information is a predefined value, or the first receiving unit 51 is further configured to receive a second indication, the second indication being used to indicate the number of indexes of the at least one first signal.

[0276] In an optional embodiment of the present invention, the first receiving unit 51 is further configured to receive first threshold information; the channel quality of the at least one first signal is greater than or equal to the first threshold corresponding to the first threshold information.

[0277] In an optional embodiment of the present invention, the first signal includes at least one or more of the following: a synchronization signal and a physical broadcast channel block (SSB); a primary synchronization signal (PSS); a secondary synchronization signal (SSS); a physical broadcast channel (PBCH); and a low-power synchronization signal (LP-SS).

[0278] In an optional embodiment of the present invention, a second offset is spaced between the time unit where the fourth transmission resource of the second information is located and the time unit where the third transmission resource of the second signal is located, the second offset being a predefined value; or, the first receiving unit 51 is further configured to receive a third indication, the third indication being used to indicate the second offset.

[0279] In an optional embodiment of the present invention, the second signal is further used to indicate receiving first control information, the first control information being used to indicate transmission resources for data transmission.

[0280] In an optional embodiment of the present invention, the first receiving unit 51 is further configured to receive a third signal before receiving the second signal, the third signal being used to instruct the first receiving unit 51 to receive the second signal.

[0281] In an optional embodiment of the present invention, the third signal is further used to indicate the receipt of second control information, the second control information being used to indicate transmission resources for data transmission.

[0282] In an optional embodiment of the present invention, a third offset is spaced between the time unit where the third transmission resource of the second signal is located and the time unit where the fifth transmission resource of the third signal is located, the third offset being a predefined value; or, the first receiving unit 51 is further configured to receive a fourth indication, the fourth indication being used to indicate the third offset.

[0283] In an optional embodiment of the present invention, the first receiving unit 51 is further configured to receive third control information before receiving the second signal, the third control information being used to instruct the first receiving unit 51 to receive the second signal and the transmission resources for data transmission.

[0284] In an optional embodiment of the present invention, a fourth offset is spaced between the time unit where the third transmission resource of the second signal is located and the time unit where the sixth transmission resource of the third control information is located. The fourth offset is a predefined value. The first receiving unit 51 is also used to receive a fifth indication, which is used to indicate the fourth offset.

[0285] In an alternative embodiment of the invention, the modulation and coding indication is associated with at least one of the rank indication, the second signal index indication, and the column indication; and / or, the interference information indication is associated with at least one of the rank indication, the second signal index indication, and the column indication.

[0286] In an optional embodiment of the present invention, the second signal is associated with the first signal and / or the first information, including at least one of the following: the first signal and / or the first information is associated with the second signal in a first reporting configuration; the first signal and / or the first information is associated with the first reporting configuration, the second signal is associated with a second reporting configuration, and the first reporting configuration and the second reporting configuration are associated; the second signal is associated with the index of the at least one first signal and / or the index of the first precoding matrix.

[0287] In the implementation of this invention, the first receiving unit 51 and the first transmitting unit 52 in the device can be implemented in practical applications through a communication module (including: basic communication kit, operating system, communication module, standardized interface and protocol, etc.) and a transceiver antenna.

[0288] This invention also provides a channel measurement device, which is applied to network equipment. Figure 11 Schematic diagram of the composition structure of the channel measurement device provided in the embodiments of the present invention Figure 2 ;like Figure 11 As shown, the device includes: a second transmitting unit 61 and a second receiving unit 62, wherein,

[0289] The second transmitting unit 61 is used to transmit one or more first signals;

[0290] The second receiving unit 62 is configured to receive first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: an index of at least one first signal; an index of a first precoding matrix, the index of the first precoding matrix being associated with the at least one first signal.

[0291] In an optional embodiment of the present invention, the second transmitting unit 81 is further configured to transmit a second signal, the second signal being associated with the first signal and / or the first information;

[0292] The second receiving unit 62 is further configured to receive second information; wherein the second information is associated with the second signal, and the second information includes one or more of the following: rank indication; second signal index indication, the second signal index indication being used to indicate one or more indices in the index of the at least one first signal; column indication, the column indication being used to indicate one or more column vectors in the first precoding matrix; modulation and coding indication; interference information indication.

[0293] In an optional embodiment of the present invention, the second transmitting unit 61 is further configured to transmit a first indication, the first indication being configured to indicate the first bias, the first bias being the interval between the time unit where the second transmission resource of the first information is located and the start time unit or end time unit of the first transmission resource of the first signal.

[0294] In an optional embodiment of the present invention, the second transmitting unit 61 is further configured to transmit a second indication, the second indication being configured to indicate the index number of the at least one first signal.

[0295] In an optional embodiment of the present invention, the second transmitting unit 61 is further configured to transmit first threshold information, wherein the channel quality of the at least one first signal is greater than or equal to the first threshold corresponding to the first threshold information.

[0296] In an optional embodiment of the present invention, the first signal includes at least one or more of the following: a synchronization signal and a physical broadcast channel block (SSB); a primary synchronization signal (PSS); a secondary synchronization signal (SSS); a physical broadcast channel (PBCH); and a low-power synchronization signal (LP-SS).

[0297] In an optional embodiment of the present invention, the second transmitting unit 61 is further configured to transmit a third indication, the third indication being configured to indicate the second bias, the second bias being the interval between the time unit where the fourth transmission resource of the second information is located and the time unit where the third transmission resource of the second signal is located.

[0298] In an optional embodiment of the present invention, the second signal is further used to indicate receiving first control information, the first control information being used to indicate transmission resources for data transmission.

[0299] In an optional embodiment of the present invention, the second transmitting unit 61 is further configured to transmit a third signal before transmitting the second signal, the third signal being used to indicate receipt of the second signal.

[0300] In an optional embodiment of the present invention, the third signal is further used to indicate the receipt of second control information, the second control information being used to indicate transmission resources for data transmission.

[0301] In an optional embodiment of the present invention, the second transmitting unit 61 is further configured to transmit a fourth indication, the fourth indication being configured to indicate the third bias, the third bias being the interval between the time unit in which the third transmission resource of the second signal is located and the time unit in which the fifth transmission resource of the third signal is located.

[0302] In an optional embodiment of the present invention, the second transmitting unit 61 is further configured to transmit third control information before transmitting the second signal, the third control information being used to indicate the transmission resources for receiving the second signal and transmitting data.

[0303] In an optional embodiment of the present invention, the second transmitting unit 61 is further configured to transmit a fifth indication, the fifth indication being configured to indicate the fourth bias, the fourth bias being the interval between the time unit where the third transmission resource of the second signal is located and the time unit where the sixth transmission resource of the third control information is located.

[0304] In an alternative embodiment of the invention, the modulation and coding indication is associated with at least one of the rank indication, the second signal index indication, and the column indication; and / or, the interference information indication is associated with at least one of the rank indication, the second signal index indication, and the column indication.

[0305] In an optional embodiment of the present invention, the second signal is associated with the first signal and / or the first information, including at least one of the following: the first signal and / or the first information is associated with the second signal in a first reporting configuration; the first signal and / or the first information is associated with the first reporting configuration, the second signal is associated with a second reporting configuration, and the first reporting configuration and the second reporting configuration are associated; the second signal is associated with the index of the at least one first signal and / or the index of the first precoding matrix.

[0306] In the implementation of this invention, the second transmitting unit 61 and the second receiving unit 62 in the device can be implemented in practical applications through a communication module (including: basic communication kit, operating system, communication module, standardized interface and protocol, etc.) and a transceiver antenna.

[0307] It should be noted that the channel measurement device described above is only illustrated by the division of the above-described program modules. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the channel measurement device and the channel measurement method provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0308] This invention also provides a communication device. Figure 12 This is a schematic diagram of the hardware composition structure of a communication device provided in an embodiment of the present invention; as shown below. Figure 12 As shown, the communication device includes a memory 72, a processor 71, and a computer program stored in the memory 72 and executable on the processor 71.

[0309] Optionally, the communication device may specifically be a terminal device or a network device according to the embodiments of the present invention; when the processor 71 executes the program, it implements the steps of the channel measurement method of the embodiments of the present invention applied to the terminal device or the network device.

[0310] Optionally, the communication device further includes at least one communication component 74. The various components in the communication device can be coupled together via a bus system 73. It is understood that the bus system 73 is used to implement communication between these components. In addition to a data bus, the bus system 73 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 12 The general labeled all buses as Bus System 73.

[0311] It is understood that memory 72 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memory 72 described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0312] The methods disclosed in the above embodiments of the present invention can be applied to processor 71, or implemented by processor 71. Processor 71 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 71 or by instructions in the form of software. The processor 71 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 71 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present invention can be directly manifested as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in memory 72. Processor 71 reads the information in memory 72 and, in conjunction with its hardware, completes the steps of the aforementioned method.

[0313] In an exemplary embodiment, the communication device may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components to perform the aforementioned method.

[0314] This invention also provides a computer-readable storage medium having a computer program stored thereon.

[0315] Optionally, the computer-readable storage medium can be applied to the channel measurement apparatus of the present invention; then, when the program is executed by the processor, it implements the steps of the channel measurement method of the present invention applied to a terminal device or network device.

[0316] This invention also provides a computer program product, including a computer program that can be executed by a processor 71 of a communication device to complete the channel measurement steps described in this invention.

[0317] The methods disclosed in the several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0318] The features disclosed in the several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0319] The features disclosed in the several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method or device embodiments.

[0320] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0321] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0322] In addition, in the various embodiments of the present invention, each functional unit can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0323] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0324] Alternatively, if the integrated units of this invention are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0325] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A channel measurement method, characterized in that, The method is applied to a terminal device, and the method includes: Receive one or more first signals; Sending first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: At least one index of the first signal; The index of the first precoding matrix, which is associated with the at least one first signal.

2. The method according to claim 1, characterized in that, The method further includes: Receive a second signal, the second signal being associated with the first signal and / or the first information; Send a second message; wherein the second message is associated with the second signal, and the second message includes one or more of the following: Rank indication; A second signal index indicates one or more indices among the indices of the at least one first signal; Column indicators, wherein the column indicators are used to indicate one or more column vectors in the first precoding matrix; Modulation and coding indication; Interference information indication.

3. The method according to claim 1, characterized in that, The time unit where the second transmission resource of the first information is located is separated from the start time unit or end time unit of the first transmission resource of the first signal by a first offset, the first offset being a predefined value, or... The method further includes: Receive a first instruction, which is used to indicate the first bias.

4. The method according to claim 1, characterized in that, The first numerical value included in the first information, representing the number of indices of at least one first signal, is a predefined value, or... The method further includes: Receive a second indication, the second indication being used to indicate the index number of the at least one first signal.

5. The method according to claim 1, characterized in that, The method further includes: Receive the first threshold information; The channel quality of at least one first signal is greater than or equal to the first threshold corresponding to the first threshold information.

6. The method according to claim 1, characterized in that, The first signal includes at least one or more of the following: Synchronization signal and physical broadcast channel block (SSB); Master synchronization signal PSS; Auxiliary synchronization signal SSS; Physical Broadcast Channel (PBCH); Low-power synchronization signal LP-SS.

7. The method according to claim 2, characterized in that, The time unit where the fourth transmission resource of the second information is located is separated from the time unit where the third transmission resource of the second signal is located by a second offset, the second offset being a predefined value, or... The method further includes: Receive a third indication, which is used to indicate the second bias.

8. The method according to claim 2, characterized in that, The second signal is also used to indicate the receipt of first control information, which indicates the transmission resources for data transmission.

9. The method according to claim 2, characterized in that, Before receiving the second signal, the method further includes: A third signal is received, which indicates that the second signal has been received.

10. The method according to claim 9, characterized in that, The third signal is also used to indicate the receipt of second control information, which in turn indicates the transmission resources for data transmission.

11. The method according to claim 9, characterized in that, The time unit where the third transmission resource of the second signal is located is separated from the time unit where the fifth transmission resource of the third signal is located by a third offset, wherein the third offset is a predefined value, or, The method further includes: Receive a fourth indication, which is used to indicate the third bias.

12. The method according to claim 2, characterized in that, Before receiving the second signal, the method further includes: Receive third control information, which is used to indicate the transmission resources for receiving the second signal and transmitting data.

13. The method according to claim 12, characterized in that, The time unit where the third transmission resource of the second signal is located is separated from the time unit where the sixth transmission resource of the third control information is located by a fourth offset, wherein the fourth offset is a predefined value, or, The method further includes: Receive a fifth instruction, which is used to indicate the fourth bias.

14. The method according to claim 2, characterized in that, The modulation and coding indication is associated with at least one of the rank indication, the second signal index indication, and the column indication; and / or, The interference information indicator is associated with at least one of the rank indicator, the second signal index indicator, and the column indicator.

15. The method according to claim 2, characterized in that, The second signal is associated with the first signal and / or the first information, including at least one of the following: The first signal and / or the first information are associated with the second signal in a first reporting configuration; The first signal and / or the first information are associated with a first reporting configuration, the second signal is associated with a second reporting configuration, and the first reporting configuration and the second reporting configuration are associated. The second signal is associated with the index of at least one first signal and / or the index of the first precoding matrix.

16. A channel measurement method, characterized in that, The method is applied to a network device, and the method includes: Send one or more first signals; Receive first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: At least one index of the first signal; The index of the first precoding matrix, which is associated with the at least one first signal.

17. The method according to claim 16, characterized in that, The method further includes: Send a second signal, the second signal being associated with the first signal and / or the first information; Receive second information; wherein the second information is associated with the second signal, and the second information includes one or more of the following: Rank indication; A second signal index indicates one or more indices among the indices of the at least one first signal; Column indicators, wherein the column indicators are used to indicate one or more column vectors in the first precoding matrix; Modulation and coding indication; Interference information indication.

18. The method according to claim 16, characterized in that, The method further includes: Send a first indication, the first indication being used to indicate the first bias, the first bias being the interval between the time unit where the second transmission resource of the first information is located and the start time unit or end time unit of the first transmission resource of the first signal.

19. The method according to claim 16, characterized in that, The method further includes: sending a second indication, the second indication being used to indicate the index number of the at least one first signal.

20. The method according to claim 16, characterized in that, The method further includes: Send first threshold information, wherein the channel quality of the at least one first signal is greater than or equal to the first threshold corresponding to the first threshold information.

21. The method according to claim 16, characterized in that, The first signal includes at least one or more of the following: Synchronization signal and physical broadcast channel block (SSB); Master synchronization signal PSS; Auxiliary synchronization signal SSS; Physical Broadcast Channel (PBCH); Low-power synchronization signal LP-SS.

22. The method according to claim 17, characterized in that, The method further includes: Send a third indication, the third indication being used to indicate the second bias, the second bias being the interval between the time unit where the fourth transmission resource of the second information is located and the time unit where the third transmission resource of the second signal is located.

23. The method according to claim 17, characterized in that, The second signal is also used to indicate the receipt of first control information, which indicates the transmission resources for data transmission.

24. The method according to claim 17, characterized in that, Before sending the second signal, the method further includes: A third signal is sent, which indicates that the second signal has been received.

25. The method according to claim 24, characterized in that, The third signal is also used to indicate the receipt of second control information, which in turn indicates the transmission resources for data transmission.

26. The method according to claim 24, characterized in that, The method further includes: Send a fourth indication, the fourth indication being used to indicate the third offset, the third offset being the interval between the time unit where the third transmission resource of the second signal is located and the time unit where the fifth transmission resource of the third signal is located.

27. The method according to claim 17, characterized in that, Before sending the second signal, the method further includes: Send a third control message, which is used to indicate the transmission resources for receiving the second signal and transmitting data.

28. The method according to claim 27, characterized in that, The method further includes: Send a fifth instruction, the fifth instruction being used to indicate the fourth offset, the fourth offset being the interval between the time unit where the third transmission resource of the second signal is located and the time unit where the sixth transmission resource of the third control information is located.

29. The method according to claim 17, characterized in that, The modulation and coding indication is associated with at least one of the rank indication, the second signal index indication, and the column indication; and / or, The interference information indicator is associated with at least one of the rank indicator, the second signal index indicator, and the column indicator.

30. The method according to claim 17, characterized in that, The second signal is associated with the first signal and / or the first information, including at least one of the following: The first signal and / or the first information are associated with the second signal in a first reporting configuration; The first signal and / or the first information are associated with a first reporting configuration, the second signal is associated with a second reporting configuration, and the first reporting configuration and the second reporting configuration are associated. The second signal is associated with the index of at least one first signal and / or the index of the first precoding matrix.

31. A channel measurement device, characterized in that, The device is applied to a terminal equipment, and the device includes: a first receiving unit and a first transmitting unit; wherein... The first receiving unit is configured to receive one or more first signals; The first transmitting unit is configured to transmit first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: At least one index of the first signal; The index of the first precoding matrix, which is associated with the at least one first signal.

32. A channel measurement device, characterized in that, The device is applied to network equipment, and the device includes: a second transmitting unit and a second receiving unit; wherein... The second transmitting unit is used to generate one or more first signals; The second receiving unit is configured to receive first information; wherein the first information is associated with the first signal, and the first information includes at least one or more of the following: At least one index of the first signal; The index of the first precoding matrix, which is associated with the at least one first signal.

33. A communication device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method according to any one of claims 1 to 15, or; When the processor executes the program, it implements the steps of the method according to any one of claims 16 to 30.

34. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program performs the steps of the method according to any one of claims 1 to 15, or; When executed by a processor, the program performs the steps of the method according to any one of claims 16 to 30.

35. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the method according to any one of claims 1 to 15, or; The computer program, when executed by a processor, implements the method according to any one of claims 16 to 30.

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