Channel state information pilot receiving method and device, and storage medium

Abstract

The present invention provides a method and device for receiving a channel state information pilot, and a storage medium. The method comprises: a base station determines information of a channel state information pilot, wherein the information of the channel state information pilot at least includes the number of channel state information pilot ports and information of constituent elements, the channel state information pilot port is used to transmit the channel state information pilot, and the channel state information pilot resource is used to carry the channel state information pilot; the base station sends the information of the channel state information pilot to the terminal; the base station transmits the channel state information pilot. The present invention solves the technical problems of poor channel measurement performance and high system complexity in the related art.

Description

[0001] This application is a divisional application of the Chinese patent application with application number "201710184867.0", application date "March 24, 2017", and title "Transmission method and device for channel state information pilot". Technical Field

[0002] The present invention relates to the field of communications, and in particular to a method and device for transmitting a channel state information pilot. Background Art

[0003] Long Term Evolution (LTE) / LTE-Advanced (LTE-A) technology is the mainstream fourth generation mobile communication technology (4G). Channel State Information Pilot (CSI-RS) was introduced in LTE-A for the terminal to predict the channel state. CSI-RS transmitted with non-zero power is called non-zero power CSI-RS (NZP CSI-RS); sometimes, in order to avoid interference, it is necessary to avoid data transmission on some resource elements RE (Resource Element) on the physical downlink shared channel (PDSCH), and the zero-power CSI-RS transmission method is adopted to achieve this, which is called zero-power CSI-RS (ZPCSI-RS), and the corresponding resource element set is zero-power CSI-RS resource (Zero Power CSI-RS Resource). Sometimes, in order to measure interference, zero-power CSI-RS is transmitted, and the corresponding resource element set is called interference measurement resource (CSI-IM Resource, Channel-State Information-Interference Measurement Resource).

[0004] The channel state information pilot configuration, i.e., the CSI reference signal configuration (CSI-RS configuration) is used to indicate the RE mapped by the CSI-RS, i.e., the RE used to transmit the CSI-RS. The CSI-RS configuration number is used to distinguish different CSI-RS configurations. The CSI-RS subframe configuration (CSI reference signal subframe configuration) is used to indicate the subframe where the CSI-RS is transmitted.

[0005] A CSI-RS configuration is a CSI-RS configuration under a certain number of antenna ports, for example, a CSI-RS configuration with a configuration number of 0 and a number of antenna ports of 8. Usually, the configuration number is the index number.

[0006] The related technology supports CSI-RS resources with port numbers of 1, 2, 4, 8, 12, and 16. The CSI-RS resource unit patterns with these port numbers are repeated on each physical resource block (PRB) pair within the bandwidth range in the transmission subframe.

[0007] Among them, the CSI-RS resources (CSI-RS resource) with port numbers of 1, 2, 4, and 8 are composed of a single CSI-RS configuration, and the CSI-RS resources with port numbers of 12, 16, 20, 24, 28, and 32 are aggregated by multiple CSI-RS configurations.

[0008] The base station or terminal usually measures the channel state through a channel state measurement process (CSI Process). One or more CSI-RS resources are usually configured under one CSI Process, and the terminal provides feedback based on the measurement of the CSI-RS.

[0009] In order to make full use of power and improve the accuracy of channel measurement, the ports can be divided into multiple groups, and the ports in the group are operated in code division multiplexing mode.

[0010] The base station notifies the terminal of information about CSI-RS through upper layer signaling, which includes: CSI-RS resource configuration identity, number of CSI-RS ports, CSI-RS configuration, and CSI-RS subframe configuration.

[0011] With the development of production, life, and scientific research technology, the demand for the fifth generation (5G) wireless communication technology has been put forward. 5G wireless technology is characterized by large bandwidth, massive multiple-input multiple-output system (massive-MIMO) beam technology, and needs to meet the requirements of large data volume transmission, low latency transmission, Internet of Things transmission, and transmission under high-speed mobile conditions. 3GPP organized the research of NR (New Radio) access technology. The frequency range of NR is from 0.6GHz to 100GHz. The interval between subcarriers can be configured, and the length of subframes or time slots in the time domain can be configured. Data transmission can be carried out in the configured orthogonal frequency division multiplexing (OFDM) symbols. The pattern and position of the data demodulation pilot need to be configurable, and the beam can be changed between OFDM symbols, and even within OFDM symbols. CSI-RS also needs to be introduced in NR to support the measurement of channel state information, beam management, and channel phase tracking; NR requires that CSI-RS can adopt three transmission modes: periodic transmission, semi-persistent transmission, and non-periodic transmission. Currently, the pilot transmission method that supports these requirements has high system complexity requirements and poor channel measurement performance.

[0012] Currently, no effective solution has been proposed for the technical problems of poor channel measurement performance and high system complexity in related technologies. Summary of the invention

[0013] The embodiment of the present invention provides a method and device for transmitting a channel state information pilot, so as to at least solve the technical problems of poor channel measurement performance and high system complexity in the related art.

[0014] According to one aspect of an embodiment of the present invention, a method for transmitting a channel state information pilot is provided, the method comprising: a base station determines information of a channel state information pilot, wherein the information of the channel state information pilot comprises at least the number of channel state information pilot ports and information of constituent elements, the channel state information pilot port is used to transmit a channel state information pilot, the channel state information pilot resource is used to carry the channel state information pilot, and the constituent elements are used to constitute the channel state information pilot resource; the base station sends the information of the channel state information pilot to a terminal; the base station transmits the channel state information pilot.

[0015] Optionally, the information of the constituent elements includes the time domain positions of the constituent elements, wherein the base station sends the information of the channel state information pilot to the terminal including: the base station notifies the terminal of the time domain positions of the constituent elements using a time domain position as a reference; wherein the time domain position used as a reference is determined by one of the following methods: the time domain position used as a reference is the last OFDM symbol of the time slot, the time domain position used as a reference is indicated by the category of the time slot, and the time domain position used as a reference is configured by upper layer signaling.

[0016] Optionally, there are multiple components, wherein the base station notifies the terminal of information of the multiple components, including at least one of the following: the base station notifies the terminal of the selected relative position relationship, wherein the base station notifies the terminal of multiple relative position relationships between the multiple components in advance through upper layer signaling, and the selected relative position relationship is one of the multiple relative position relationships; the base station sends the category of the component and the number of channel state information pilot ports to the terminal to indicate the relative position relationship between the multiple components through the category of the component and the number of channel state information pilot ports; the base station notifies the terminal of the subcarrier spacing information to indicate the relative position relationship between the multiple components through the subcarrier spacing information, wherein the subcarrier A wave is a frequency domain unit that carries data or signals in an OFDM system, and the spacing information of subcarriers is used to indicate the spacing between frequency domain units; the base station notifies the terminal of the multiplexing mode information of the channel state information pilot port, so as to indicate the relative position relationship between multiple components through the multiplexing mode information of the channel state information pilot port, wherein the multiplexing mode information of the channel state information pilot port is used to indicate the manner in which the ports jointly use wireless resources; the base station notifies the terminal of the information of the generation sequence of the channel state information pilot, so as to indicate the relative position relationship between multiple components through the information of the generation sequence of the channel state information pilot, wherein the information of the generation sequence is used to indicate the generation sequence used when generating symbols of the channel state information pilot.

[0017] Optionally, there are multiple components, and the base station notifies the terminal of information about the multiple components, including: the base station notifies the terminal of the relative position relationship between the multiple components through upper layer signaling, and notifies the terminal of the position of one of the multiple components through physical layer signaling; or, the base station notifies the terminal of the relative position relationship between the multiple components through physical layer signaling, and notifies the terminal of the position of one of the multiple components through upper layer signaling.

[0018] Optionally, the information of the constituent elements includes the time domain position and frequency domain position of the constituent elements, wherein the base station notifies the terminal of the information of the constituent elements including at least one of the following: the base station notifies the terminal of the position of the earliest OFDM symbol of the constituent elements in the time domain and the position of the lowest frequency subcarrier of the constituent elements in the frequency domain; the base station notifies the terminal of the position of the latest OFDM symbol of the constituent elements in the time domain and the position of the highest frequency subcarrier of the constituent elements in the frequency domain; the base station notifies the terminal of the position of the latest OFDM symbol of the constituent elements in the time domain and the position of the lowest frequency subcarrier of the constituent elements in the frequency domain.

[0019] Optionally, constituent elements of the channel state information pilot resource include multiple element groups, and the method further includes: the base station notifies the terminal of multiple position information of the multiple element groups, wherein each position information is used to indicate a position set for each element group in the multiple element groups.

[0020] Optionally, the location information of the element group includes the location of the resource block where the element group is located and the location of the subcarrier where the element group is located.

[0021] Optionally, the information of the channel state information pilot also includes frequency domain density information of the channel state information pilot, and the base station indicates the position of the element group in the following manner: the base station indicates the position of the element group through the frequency domain density information of the channel state information pilot, wherein, in each resource block, every K subcarriers are used to carry an element group, wherein K is a positive integer.

[0022] Optionally, when the frequency domain density value indicated by the frequency domain density information is greater than 1, 12 can be divided by the frequency domain density value, where the frequency domain density value is the number of resource units occupied by the channel state information pilot pattern on each port and each resource block.

[0023] Optionally, the method further includes: the base station notifying the terminal of the number of resource blocks used by the patterns represented by the multiple element groups; or the base station notifying the terminal of the positions of the resource blocks used by the patterns represented by the multiple element groups.

[0024] Optionally, the method further includes: if the channel state information pilot is transmitted using zero power, the base station notifies the terminal of multiple categories of constituent elements of the channel state information pilot resource and positions of constituent elements of each category.

[0025] Optionally, the base station notifying the terminal of the position of each category of component elements includes: the base station notifying the terminal of the position of each category of component elements by bit mapping.

[0026] Optionally, when the base station notifies the terminal of information of the channel state information pilot to be transmitted, the method also includes performing joint encoding in one of the following ways: jointly encoding the number of channel state information pilot ports and the category of constituent elements; jointly encoding the positions of at least two constituent elements; jointly encoding the category of constituent elements and the positions of constituent elements; jointly encoding the number of channel state information pilot ports and the positions of constituent elements.

[0027] Optionally, when the downlink transmission time slot of the time domain position of the component notified by the base station does not exist, the method also includes one of the following: the base station does not transmit the channel state information pilot; the base station notifies a time window to the terminal, and transmits the channel state information pilot in the first downlink time slot indicated by the notified time window; the base station notifies the transmission period of the channel state information pilot, and indicates the time domain position of the channel state information pilot by the number of downlink time slots contained in the wireless frame corresponding to the configured transmission period and the number of downlink time slots contained in the wireless frame corresponding to the transmitted channel state information pilot.

[0028] Optionally, the information of the constituent element includes the frequency domain position of the constituent element, wherein the base station notifies the terminal of the frequency domain position of the constituent element includes: the base station selects one for the constituent element from multiple frequency domain positions, and notifies the terminal of the frequency domain position selected for the constituent element, wherein the multiple frequency domain positions are pre-set, wherein when the constituent element occupies one subcarrier in the frequency domain, the frequency domain position where any subcarrier in the resource block is located is allowed to be the pre-set frequency domain position; when the constituent element occupies multiple subcarriers in the frequency domain, the interval between two adjacent pre-set frequency domain positions in the resource block is allowed to be two subcarriers.

[0029] Optionally, the method further includes: the base station notifying the terminal of the category of the channel state information pilot.

[0030] According to another aspect of an embodiment of the present invention, a channel state information pilot transmission device is provided, the device comprising: a determination unit, used to determine information of the channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports and information of constituent elements, the channel state information pilot port is used to transmit the channel state information pilot, the channel state information pilot resource is used to carry the channel state information pilot, and the constituent elements are used to constitute the channel state information pilot resource; a transmitter, used to send the channel state information pilot information to a terminal; a transmitter, used to transmit the channel state information pilot.

[0031] Optionally, the information of the constituent elements includes the time domain positions of the constituent elements, wherein the transmitter is further used to notify the terminal of the time domain positions of the constituent elements using a time domain position as a reference, wherein the time domain position used as a reference is determined in one of the following ways: the time domain position used as a reference is the last OFDM symbol of the time slot, the time domain position used as a reference is indicated by the category of the time slot, and the time domain position used as a reference is configured by upper layer signaling.

[0032] Optionally, there are multiple components, wherein the transmitter includes: a first notification module, used to notify the terminal of the selected relative position relationship, wherein the base station notifies the terminal of multiple relative position relationships between the multiple components in advance through upper layer signaling, and the selected relative position relationship is one of the multiple relative position relationships; a second notification module, used to send the category of the component and the number of channel state information pilot ports to the terminal, so as to indicate the relative position relationship between the multiple components through the category of the component and the number of the channel state information pilot ports; a third notification module, used to notify the terminal of the spacing information of the subcarrier, so as to indicate the relative position relationship between the multiple components through the spacing information of the subcarrier, wherein the subcarrier is an OFDM system A frequency domain unit that carries data or signals in the system, and the spacing information of the subcarriers is used to indicate the spacing between the frequency domain units; a fourth notification module is used to notify the terminal of the multiplexing mode information of the channel state information pilot port, so as to indicate the relative position relationship between multiple components through the multiplexing mode information of the channel state information pilot port, wherein the multiplexing mode information of the channel state information pilot port is used to indicate the way in which the ports jointly use wireless resources; a fifth notification module is used to notify the terminal of the information of the generation sequence of the channel state information pilot, so as to indicate the relative position relationship between multiple components through the information of the generation sequence of the channel state information pilot, wherein the information of the generation sequence is used to indicate the generation sequence used when generating the symbols of the channel state information pilot.

[0033] Optionally, there are multiple components, and the transmitter includes: a sixth notification module, used to notify the terminal of the relative position relationship between the multiple components through upper layer signaling, and to notify the terminal of the position of one of the multiple components through physical layer signaling; a seventh notification module, used to notify the terminal of the relative position relationship between the multiple components through physical layer signaling, and to notify the terminal of the position of one of the multiple components through upper layer signaling.

[0034] Optionally, the information of the constituent elements includes the time domain position and frequency domain position of the constituent elements, wherein the transmitter includes: a ninth notification module, used to notify the terminal of the position of the earliest OFDM symbol of the constituent elements in the time domain position and the position of the lowest frequency subcarrier of the constituent elements in the frequency domain position; a tenth notification module, used to notify the terminal of the position of the latest OFDM symbol of the constituent elements in the time domain position and the position of the highest frequency subcarrier of the constituent elements in the frequency domain position; an eleventh notification module, used to notify the terminal of the position of the latest OFDM symbol of the constituent elements in the time domain position and the position of the lowest frequency subcarrier of the constituent elements in the frequency domain position.

[0035] Optionally, constituent elements of the channel state information pilot resources include multiple element groups, and the transmitter includes: a twelfth notification module, used to notify the terminal of multiple position information of the multiple element groups, wherein each position information is used to indicate a position set for each element group in the multiple element groups.

[0036] Optionally, the location information of the element group includes the location of the resource block where the element group is located and the location of the subcarrier where the element group is located.

[0037] Optionally, the channel state information pilot information also includes frequency domain density information of the channel state information pilot, and the transmitter is also used to indicate the position of the element group through the frequency domain density information of the channel state information pilot, wherein, in each resource block, every K subcarriers are used to carry an element group, wherein K is a positive integer.

[0038] Optionally, when the frequency domain density value indicated by the frequency domain density information is greater than 1, 12 can be divided by the frequency domain density value, where the frequency domain density value is the number of resource units occupied by the channel state information pilot pattern on each port and each resource block.

[0039] Optionally, the device further comprises: a first notification unit, used to notify the terminal of the number of resource blocks used by the patterns represented by the multiple component groups; and a second notification unit, used to notify the terminal of the positions of the resource blocks used by the patterns represented by the multiple component groups.

[0040] Optionally, the apparatus further comprises: a third notification unit, configured to notify the terminal of multiple categories of constituent elements of the channel state information pilot resource and information of constituent elements of each category if the channel state information pilot is transmitted using zero power.

[0041] Optionally, the third notification unit is further configured to notify the terminal of the information of each category of component elements by bit mapping.

[0042] Optionally, when the transmitter sends the information of the channel state information pilot to the terminal, the transmitter adopts one of the following methods for joint encoding: jointly encoding the number of channel state information pilot ports and the category of constituent elements; jointly encoding the information of at least two constituent elements; jointly encoding the category of constituent elements and the information of constituent elements; jointly encoding the number of channel state information pilot ports and the information of constituent elements.

[0043] Optionally, in the case that the downlink transmission time slot of the time domain position of the component notified by the transmitter does not exist, the device also includes: a control unit, used to control the transmitter not to transmit a channel state information pilot; a fourth notification unit, used to notify a time window to the terminal, and transmit the channel state information pilot in the first downlink time slot indicated by the notified time window; a fifth notification unit, used to notify the transmission period of the channel state information pilot, and indicate the time domain position of the channel state information pilot by the number of time slots included in the subframe corresponding to the configured transmission period and the number of time slots of the subframe corresponding to the transmitted channel state information pilot.

[0044] Optionally, the information of the constituent element includes the frequency domain position of the constituent element, wherein the transmitter includes: a selection module, used to select one for the constituent element from multiple frequency domain positions, and notify the terminal of the frequency domain position selected for the constituent element, wherein the multiple frequency domain positions are pre-set, wherein when the constituent element occupies one subcarrier in the frequency domain, the frequency domain position where any subcarrier in the resource block is located is allowed to be the pre-set frequency domain position; when the constituent element occupies multiple subcarriers in the frequency domain, the interval between two adjacent pre-set frequency domain positions in the resource block is allowed to be two subcarriers.

[0045] Optionally, the apparatus further includes: a sixth notification unit, configured to notify the terminal of the category of the channel state information pilot.

[0046] According to yet another embodiment of the present invention, a storage medium is provided. The storage medium includes a stored program, wherein any of the above methods is executed when the program is run.

[0047] According to yet another embodiment of the present invention, a processor is provided, and the processor is used to run a program, wherein any one of the above methods is executed when the program is run.

[0048] In the embodiment of the present invention, the base station determines the information of the channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports and the component information of the channel state information pilot resources, the channel state information pilot ports are used to transmit the channel state information pilot, and the channel state information pilot resources are used to carry the channel state information pilot; the base station sends the information of the channel state information pilot to the terminal; the base station transmits the channel state information pilot. Thus, the technical problems of poor channel measurement performance and high system complexity in the related technology are solved, and the technical effect of reducing system complexity and improving channel state measurement performance is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0050] Figure 1 is a schematic diagram of a terminal for running a method for transmitting a channel state information pilot according to an embodiment of the present invention;

[0051] Figure 2 is a flow chart of a method for transmitting a channel state information pilot according to an embodiment of the present invention; and

[0052] Figure 3 4 is a schematic diagram of a channel state information pilot transmission device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0055] Example 1

[0056] The method embodiment provided in the first embodiment of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. For example, the method running on a computer terminal (i.e., a computer terminal in a base station) Figure 1 As shown, the computer terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 101 (the processor 101 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 103 for storing data, and a transmission device 105 for communication functions. A person skilled in the art can understand that Figure 1 The structure shown is for illustration only and does not limit the structure of the above-mentioned electronic device.

[0057] The memory 103 can be used to store software programs and modules of application software, such as program instructions / modules corresponding to the control method of the device in the embodiment of the present invention. The processor 101 executes various functional applications and data processing by running the software programs and modules stored in the memory 103, that is, implementing the above method. The memory may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include a memory remotely arranged relative to the processor, and these remote memories may be connected to the computer terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0058] The transmission device is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of a computer terminal. In one example, the transmission device includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device can be a radio frequency (Radio Frequency, RF) module, which is used to communicate with the Internet wirelessly.

[0059] According to an embodiment of the present invention, a method embodiment of a method for transmitting a channel state information pilot is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0060] Figure 2 is a flow chart of a method for transmitting a channel state information pilot according to an embodiment of the present invention. Figure 2 As shown, the method comprises the following steps:

[0061] Step S202, the base station determines information of a channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports and information of constituent elements, the channel state information pilot port is used to transmit the channel state information pilot, and the channel state information pilot resource is used to carry the channel state information pilot;

[0062] Step S204, the base station sends channel state information pilot information to the terminal;

[0063] Step S206: The base station transmits a channel state information pilot.

[0064] Through the above embodiment, the base station determines the information of the channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports and component information, the channel state information pilot port is used to transmit the channel state information pilot, and the channel state information pilot resource is used to carry the channel state information pilot; the base station sends the information of the channel state information pilot to the terminal; the base station transmits the channel state information pilot. Thus, the technical problems of poor channel measurement performance and high system complexity in the related technology are solved, and the technical effect of reducing system complexity and improving channel state measurement performance is achieved.

[0065] Optionally, the execution entity of the above steps may be a base station, etc., but is not limited thereto.

[0066] The port represents the logical antenna. The terminal obtains the channel state information on the logical antenna by measuring the pilot signal on the port. The number of CSI-RS ports indicates the number of logical antennas. The CSI-RS resource pattern is a set of elements (RE, Resource element) that transmit CSI-RS (channel state information pilot), which is composed of elements. An element is a set of REs. The information of the element may include at least the type of element and the position of the element.

[0067] The CSI-RS information transmitted by the base station can be used to obtain the CSI-RS resource pattern and the number of ports. The terminal can obtain this information to know which REs the base station measures the channel status on and how many ports the channel status is measured on. The CSI-RS resource pattern is composed of components, and the CSI-RS resource pattern information can be transmitted through the category information and location information of the components.

[0068] The number of CSI-RS ports may be a positive integer, such as 1, 2, 4, 8, 12, 16, 24, 32, etc. The types of components may be differentiated according to the number of REs contained, such as components containing 1 RE, components containing 2 REs, components containing 4 REs, components containing 8 REs, components containing 12 REs, components containing 16 REs, etc.; they may also be differentiated according to the number of components required to form a CSI-RS resource pattern, such as using 1 component to form a CSI-RS resource pattern, using 2 components to form a CSI-RS resource pattern, using 3 components to form a CSI-RS resource pattern, and using 4 components to form a CSI-RS resource pattern. 4 component CSI-RS resource patterns; they can also be distinguished according to the number of subcarriers Y included in the frequency domain and the number of OFDM symbols Z included in the time domain, for example, the following distinction: (Y, Z) = (2, 1), (Y, Z) = (1, 2), (Y, Z) = (4, 1), (Y, Z) = (2, 2), (Y, Z) = (1, 4), (Y, Z) = (8, 1), (Y, Z) = (2, 4), (Y, Z) = (1, 8), (Y, Z) = (4, 2). The information of the constituent elements, for example, can be the information of each constituent element, or the information of one of the constituent elements or part of the constituent elements; only the time domain position of the element can be used, or only the frequency domain position of the element can be used, the time domain position and frequency domain position of the element can be used at the same time, or the position of a certain RE in the element can be used; the position can be represented by a subcarrier, the position can be represented by an OFDM symbol, or the position can be represented by a certain time unit.

[0069] Optionally, the information of the constituent elements includes the time domain positions of the constituent elements, wherein the base station sends the information of the channel state information pilot to the terminal including: the base station notifies the terminal of the time domain positions of the constituent elements using a time domain position as a reference; wherein the time domain position used as a reference is determined by one of the following methods: the time domain position used as a reference is the last OFDM symbol of the time slot, the time domain position used as a reference is indicated by the category of the time slot, and the time domain position used as a reference is configured by upper layer signaling.

[0070] Optionally, there are multiple components, wherein the base station notifies the terminal of information of the multiple components, including at least one of the following: the base station notifies the terminal of the selected relative position relationship, wherein the base station notifies the terminal of multiple relative position relationships between the multiple components in advance through upper layer signaling, and the selected relative position relationship is one of the multiple relative position relationships; the base station sends the category of the component and the number of channel state information pilot ports to the terminal to indicate the relative position relationship between the multiple components through the category of the component and the number of channel state information pilot ports; the base station notifies the terminal of the subcarrier spacing information to indicate the relative position relationship between the multiple components through the subcarrier spacing information, wherein the subcarrier A wave is a frequency domain unit that carries data or signals in an OFDM system, and the spacing information of subcarriers is used to indicate the spacing between frequency domain units; the base station notifies the terminal of the multiplexing mode information of the channel state information pilot port, so as to indicate the relative position relationship between multiple components through the multiplexing mode information of the channel state information pilot port, wherein the multiplexing mode information of the channel state information pilot port is used to indicate the manner in which the ports jointly use wireless resources; the base station notifies the terminal of the information of the generation sequence of the channel state information pilot, so as to indicate the relative position relationship between multiple components through the information of the generation sequence of the channel state information pilot, wherein the information of the generation sequence is used to indicate the generation sequence used when generating symbols of the channel state information pilot.

[0071] Optionally, there are multiple components, and the base station notifies the terminal of information about the multiple components, including: the base station notifies the terminal of the relative position relationship between the multiple components through upper layer signaling, and notifies the terminal of the position of one of the multiple components through physical layer signaling; or, the base station notifies the terminal of the relative position relationship between the multiple components through physical layer signaling, and notifies the terminal of the position of one of the multiple components through upper layer signaling.

[0072] Optionally, the information of the constituent elements includes the time domain position and frequency domain position of the constituent elements, wherein the base station notifies the terminal of the information of the constituent elements including at least one of the following: the base station notifies the terminal of the position of the earliest OFDM symbol of the constituent elements in the time domain and the position of the lowest frequency subcarrier of the constituent elements in the frequency domain; the base station notifies the terminal of the position of the latest OFDM symbol of the constituent elements in the time domain and the position of the highest frequency subcarrier of the constituent elements in the frequency domain; the base station notifies the terminal of the position of the latest OFDM symbol of the constituent elements in the time domain and the position of the lowest frequency subcarrier of the constituent elements in the frequency domain.

[0073] Optionally, constituent elements of the channel state information pilot resource include multiple element groups, and the method further includes: the base station notifies the terminal of multiple position information of the multiple element groups, wherein each position information is used to indicate a position set for each element group in the multiple element groups.

[0074] Optionally, the location information of the element group includes the location of the resource block where the element group is located and the location of the subcarrier where the element group is located.

[0075] Optionally, the information of the channel state information pilot also includes frequency domain density information of the channel state information pilot, and the base station indicates the position of the element group in the following manner: the base station indicates the position of the element group through the frequency domain density information of the channel state information pilot, wherein, in each resource block, every K subcarriers are used to carry an element group, wherein K is a positive integer.

[0076] Optionally, when the frequency domain density value indicated by the frequency domain density information is greater than 1, 12 can be divided by the frequency domain density value, where the frequency domain density value is the number of resource units occupied by the channel state information pilot pattern on each port and each resource block.

[0077] Optionally, the method further includes: the base station notifying the terminal of the number of resource blocks used by the patterns represented by the multiple element groups; or the base station notifying the terminal of the positions of the resource blocks used by the patterns represented by the multiple element groups.

[0078] Optionally, the method further includes: if the channel state information pilot is transmitted using zero power, the base station notifies the terminal of multiple categories of constituent elements of the channel state information pilot resource and information of constituent elements of each category.

[0079] Optionally, the base station notifying the terminal of the information of each category of component elements includes: the base station notifying the terminal of the information of each category of component elements by bit mapping.

[0080] Optionally, when the base station notifies the terminal of the information of the channel state information pilot to be transmitted, the method also includes using one of the following methods for joint encoding: jointly encoding the number of channel state information pilot ports and the category of constituent elements; jointly encoding the information of at least two constituent elements; jointly encoding the category of constituent elements and the information of constituent elements; jointly encoding the number of channel state information pilot ports and the information of constituent elements.

[0081] Optionally, when the downlink transmission time slot of the time domain position of the component notified by the base station does not exist, the method also includes one of the following: the base station does not transmit the channel state information pilot; the base station notifies a time window to the terminal, and transmits the channel state information pilot in the first downlink time slot indicated by the notified time window; the base station notifies the transmission period of the channel state information pilot, and indicates the time domain position of the channel state information pilot by the number of time slots included in the subframe corresponding to the configured transmission period and the number of time slots of the subframe corresponding to the transmitted channel state information pilot.

[0082] Optionally, the information of the constituent element includes the frequency domain position of the constituent element, wherein the base station notifies the terminal of the information of the constituent element includes: the base station selects one for the constituent element from multiple frequency domain positions, and notifies the terminal of the frequency domain position selected for the constituent element, wherein the multiple frequency domain positions are pre-set, wherein when the constituent element occupies one subcarrier in the frequency domain, the frequency domain position where any subcarrier in the resource block is located is allowed to be the pre-set frequency domain position; when the constituent element occupies multiple subcarriers in the frequency domain, the interval between two adjacent pre-set frequency domain positions in the resource block is allowed to be two subcarriers.

[0083] Optionally, the method further includes: the base station notifying the terminal of the category of the channel state information pilot.

[0084] An optional implementation of this embodiment is: using a time domain position as a reference to notify the time domain position of the component. The time domain position used as a reference is one of the following: the reference time domain position is the last OFDM symbol of the time slot; the reference time domain position is indicated by the category of the time slot; the reference time domain position is configured by upper layer signaling.

[0085] Selecting an appropriate time domain position as a reference to notify the time domain position of the component can save the signaling overhead of notifying the CSI-RS resource pattern. A time slot is a time structure unit for wireless signal or data transmission, usually containing 1 to multiple OFDM symbols, and a complete CSI-RS resource pattern can be present in a time slot. Usually, the first few OFDM symbols of a time slot are used for control channels, and the OFDM in the middle or the end of the time slot is used for CSI-RS transmission; selecting the last OFDM symbol of the time slot as a reference can describe the numerical value of the CSI-RS position in a smaller range compared to using the first OFDM symbol as a reference, thereby saving signaling. Different categories of time slots have different time slot structures, and the possible positions of the CSI-RS resource pattern in the time slot are different, so determining the reference time domain position according to different categories of time slots can save signaling overhead and system complexity; sometimes, the range of time domain positions that the CSI-RS resource pattern may transmit may be different depending on the scenario, and upper-layer signaling configuration of the reference time domain reference position can save signaling overhead.

[0086] For example, the last OFDM symbol of a time slot may be an OFDM symbol before an uplink time slot in a TDD system, may be the last OFDM symbol in a time slot containing control signaling, may be the last OFDM symbol under a corresponding configured subcarrier spacing, may be the last OFDM symbol under any type of time slot, and may be the last OFDM symbol of a special type of time slot. In some time slot categories, the CSI-RS resource pattern is close to the third OFDM symbol in time, and using the third OFDM symbol of such a time slot as a reference position can save signaling overhead; in some time slot categories, the CSI-RS resource pattern is close to the middle OFDM symbol in time, and using the middle OFDM symbol of such a time slot as a reference position can save signaling overhead; in some time slot categories, the CSI-RS resource pattern is close to the last OFDM symbol in time, and using the last OFDM symbol of such a time slot as a reference position can save signaling overhead. In the scenario of avoiding interference from the CSI-RS of adjacent cells, the CSI-RS resource pattern position is often located in a certain position range, and the upper-layer signaling configures this position as a reference time domain position, which can save signaling overhead; in the scenario of transmitting CSI-RS to multiple terminals separately, the CSI-RS resource pattern position of a specific terminal is often located in a certain position range, and the upper-layer signaling configures this position as a reference time domain position.

[0087] Another optional implementation of this embodiment is: the CSI-RS resource is composed of multiple components, and the base station notifies the information of the multiple components.

[0088] CSI-RS resources are composed of multiple components, and the positions of multiple components can be configured, which can realize flexible CSI-RS resource patterns and pattern position configuration. In 5G wireless systems, the subframe structure can be flexibly configured, the transmit beam can change with OFDM symbols, the data demodulation pilot position can be configured, and the data transmitted to the terminal can be scheduled in the time domain in units of OFDM symbols, and can be scheduled in the frequency domain; in order to adapt to these characteristics, the CSI-RS resource pattern and pattern position need to have sufficient flexibility or diversity.

[0089] For example: CSI-RS resources with port numbers of 1, 2, 4, and 8 consist of 1 element, and the base station notifies the position of 1 element; CSI-RS resources with port numbers of 4, 8, 12, 16, 24, and 32 consist of multiple elements, and the base station notifies the information of multiple constituent elements; CSI-RS resources with port number 4 consist of 2 elements, and the base station notifies the positions of 2 elements; CSI-RS resources with port number 12 consist of 3 elements with RE number 4, and the base station notifies the positions of 3 elements; CSI-RS resources with port number 16 consist of 4 elements with RE number 4, and the base station notifies the positions of 4 elements; CSI-RS resources with port number 16 consist of 2 elements with RE number 8, and the base station notifies the positions of 2 elements.

[0090] Another optional implementation of this embodiment is: the base station uses one of the following methods to determine the information of multiple components: the upper layer signaling defines the relative positions between the components, and then notifies the terminal of the relative positions between the selected components; the relative positions between the components are determined by the category of the components and the number of ports of the CSI-RS resource.

[0091] The upper layer signaling defines or configures multiple relative positions, which can achieve diversity and flexibility of CSI-RS resource patterns; then notifying the terminal of the type of relative position selected can save signaling overhead for notifying the CSI-RS resource pattern actually used.

[0092] The relative positions between the elements are determined by the types of the elements and the number of ports of the CSI-RS resource, which can increase the diversity and flexibility of the CSI-RS resource pattern to a certain extent and save the signaling overhead of configuring the CSI-RS resource pattern.

[0093] For example, the upper layer signaling defines three relative positions of two elements of a CSI-RS with a port number of 4, and notifies the terminal of a relative position selected for transmission; a CSI-RS resource with a port number of 8 is composed of 2 elements with a RE number of 4, and the upper layer signaling defines three relative positions, and notifies the terminal of a relative position selected for transmission; a CSI-RS resource with a port number of 8 is composed of 4 elements with a RE number of 2, and the upper layer signaling defines 4 relative positions, and notifies the terminal of a relative position selected for transmission.

[0094] For another example, a CSI-RS resource with 4 ports consists of 2 elements with (Y, Z) = (2, 1), corresponding to one relative position between elements; a CSI-RS resource with 4 ports consists of 2 elements with (Y, Z) = (1, 2), corresponding to another relative position between elements; a CSI-RS resource with 8 ports consists of 2 elements with (Y, Z) = (4, 1), corresponding to one relative position between elements; a CSI-RS resource with 8 ports consists of 2 elements with (Y, Z) = (1, 4), corresponding to another relative position between elements; a CSI-RS resource with 8 ports consists of 2 elements with (Y, Z) = (2, 2), corresponding to yet another relative position between elements.

[0095] Another optional implementation of this embodiment is: the base station uses one of the following methods to notify the information of multiple components: upper layer signaling notifies the terminal of the relative positions between components, and physical layer signaling notifies the starting position of the components. Upper layer signaling notifies the terminal of the starting position of the components, and physical layer signaling notifies the terminal of the relative positions between components.

[0096] The relative position between the elements is used to determine the CSI-RS resource pattern, and the starting position is used to determine the position of the CSI-RS resource pattern. Upper layer signaling changes slowly, while physical layer signaling changes quickly. The upper layer signaling notifies the relative position between the elements, and the physical layer signaling notifies the starting position of the elements, which can not only notify the terminal of the CSI-RS resource pattern and position, but also flexibly configure the position of the CSI-RS resource pattern while reducing the physical layer signaling overhead. The upper layer signaling notifies the terminal of the starting position of the elements, and the physical layer signaling notifies the terminal of the relative position between the elements, which can not only notify the terminal of the CSI-RS resource pattern and position, but also flexibly configure the CSI-RS resource pattern while reducing the physical layer signaling overhead.

[0097] For example: a CSI-RS resource with N ports consists of M elements, and the upper layer signaling configures the relative positions in the time domain between the M elements, or the upper layer signaling configures the relative positions in the frequency domain between the M elements, or simultaneously configures the positions in the time domain and frequency domain between the M elements; the physical layer signaling notifies the starting position of the first element, or the physical layer signaling notifies the starting position of the second element, or the physical layer notifies the starting position of the last element, or the starting position notified by the physical layer is the time domain position, or the starting position notified by the physical layer is the frequency domain position, or the position notified by the physical layer is the joint position of the time domain and the frequency domain. Where N and M are positive integers.

[0098] For another example, a CSI-RS resource with N ports consists of M elements, and the upper layer signaling configures the starting position of the first element, or the upper layer signaling configures the starting position of the second element, or the upper layer configures the starting position of the last element, or the upper layer configures the starting position as a time domain position, or the upper layer configures the starting position as a frequency domain position, or the upper layer configures the position as a joint position of the time domain and the frequency domain.

[0099] The physical layer signaling notifies the relative positions in the time domain between the M elements, or the physical layer signaling notifies the relative positions in the frequency domain between the M elements, or both the time domain and frequency domain positions between the M elements, wherein N and M are positive integers.

[0100] Another optional implementation of this embodiment is: the upper layer signaling presets multiple positions of the component elements, and then indicates them in one of the following ways: using the position number for indication; using bitmap for indication; the upper layer signaling presets multiple positions of the component elements, and then uses the position number or bitmap for indication, which can notify the terminal of the pattern and position of the CSI-RS resource. Moreover, by presetting multiple positions, multiple possibilities of CSI-RS resource patterns and positions can be provided, and the combination of indication can provide flexibility of selection, and the combination of position number indication or bitmap can also save signaling overhead.

[0101] For example, the upper layer signaling presets L positions in the time domain, or presets Q positions in the frequency domain, or presets R positions in the time domain and the frequency domain jointly; different positions correspond to different sequence numbers, indicated by different bit combination states; or different positions correspond to an indication bit, and one bit indicates one position; indicating one position notifies the position of one element, thereby indicating the position of the entire CSI-RS resource pattern; indicating multiple positions notifies the positions of multiple elements, thereby indicating the CSI-RS resource pattern and position.

[0102] Another optional implementation of this embodiment is: the base station notifies the position of the component in the following manner: the time domain position notifies the earliest OFDM position where the component is located, and the frequency domain position notifies the lowest frequency subcarrier position where the component is located; the time domain position notifies the last OFDM position where the component is located, and the frequency domain position notifies the lowest frequency subcarrier position where the component is located; the component is composed of multiple REs, and the position of the RE with the earliest time domain position and the lowest frequency domain position is used as the position of the component for notification. Alternatively, the position of the RE with the last time domain position and the lowest frequency domain position is used as the position of the component for notification. The highest position of the component in the frequency domain can be obtained by adding the lowest position of the component in the frequency domain and the number of subcarriers occupied by the component in the frequency domain. The complexity of the addition operation is low, so it can reduce the complexity of the operation. When the position of the earliest RE of the CSI-RS resource pattern is closer to the reference time domain position relative to the last RE position, the time domain position notifies the earliest RE position of the element, which can reduce the difference between the element time position and the reference time domain position, thereby reducing the signaling overhead; similarly, when the position of the last RE of the CSI-RS resource pattern is closer to the reference time domain position relative to the earliest RE position, the time domain position notifies the last RE position of the element, which can reduce the difference between the element time position and the reference time domain position, thereby reducing the signaling overhead.

[0103] For example: for the element (Y,Z)=(4,1), the position of the lowest frequency RE is notified; for the element (Y,Z)=(4,2), the position of the lowest frequency and earliest RE is notified; for the element (Y,Z)=(2,4), the position of the lowest frequency and earliest RE is notified; for the element (Y,Z)=(2,1), the position of the lowest frequency RE is notified; for the element (Y,Z)=(42,2), the position of the lowest frequency and last RE is notified; for the element (Y,Z)=(2,2), the position of the lowest frequency and last RE is notified.

[0104] Another optional implementation of this embodiment is: the base station notifies the multiple locations of the component group.

[0105] The base station notifies multiple positions of the element group, and can form a flexible and diverse density pattern between the element groups to meet the needs of changing CSI-RS resource density, and can also coexist with other variable pilot signals, coexist with other variable control channels, coexist with other variable data channels, and coexist with variable time slot structures. The present application can provide that the CSI-RS resource density can be configured in the frequency domain to be lower than 1 RE per port in each resource block (RB), and can be configured to be higher than 1 RE per port in each RB, or can be configured to be 1 RE per port in each RB. And the present application can also provide measurement of multiple beams at different time domain positions, that is, provide beam scanning power. When the pattern of the demodulation pilot signal changes in different RBs, or changes in different time domain units, the CSI-RS resources provided by the present application can coexist with it; when the phase tracking pilot changes in different RB patterns, the CSI-RS resources provided by the present application can coexist with it; when the pattern of other control channels and data channels in the frequency domain or the pattern in the time domain changes, the CSI-RS resources provided by the present application can coexist with it.

[0106] For example: the base station notifies M positions of the component group, where M is a positive integer. The base station can use one parameter to notify the M positions, such as the interval between the component groups, which can be the interval in the frequency domain or the interval in the frequency domain; the base station can use two parameters to notify the M positions, one of which is the position of a certain component group, which can be the starting component group, the ending component group, or a component group with a fixed sequence number, and the other parameter is the interval between the component groups; the base station can use two groups of parameters to notify the M positions, one of which is the position of a certain component group, which can be the starting component group, the ending component group, or a component group with a fixed sequence number, and the other group of parameters is the relative position between the component groups; the base station can also use M parameters or M groups of parameters to notify the M positions respectively. For another example, the number M of component group positions can be notified or indicated by the base station; or the number M of component group positions can be predetermined.

[0107] Another optional implementation of this embodiment is: the location information of the component group notified by the base station includes the location of the RB where the component group is located, and the location of the subcarrier.

[0108] Subcarrier is the smallest unit in the frequency domain, and RB is composed of multiple subcarriers. The base station notifies the location of the component group from two sets of frequency domain units. The specific location of the component group can be clearly notified within the specified range, and signaling overhead can be saved.

[0109] For example: the base station notifies the component group that it is at the M0th RB and the N0th subcarrier; or the base station notifies the component group to shift M0 RBs and N0 subcarriers; or the base station notifies the component group to shift M0 RBs and the N0th subcarrier; or the base station notifies the component group to shift M0 RBs and the N0th subcarrier. For another example, the component group shifts M0 RBs with reference to the position of the last numbered component group; or the kth component group shifts M0 RBs with reference to the kth RB; or the component group shifts M0 RBs with a predetermined reference position.

[0110] For another example, the component group is offset by N0 subcarriers with reference to the position of the component group with the previous serial number; or the component group is offset by M0 subcarriers with a predetermined reference position. For another example, the component group is offset with reference to the position of the component group in the case where each port has 1 RE in each RB. For another example, the offset is performed in units of the number of subcarriers occupied by the component group; or the offset is performed in units of the number of REs occupied by the component group. For another example, each component group uses the same parameter for offset; or each component group uses an independent parameter for offset; or each component group uses the same parameter for RB offset, or each component group uses the same parameter for subcarrier offset. For another example, the RB position parameter of the component group is jointly encoded with the subcarrier position parameter. Wherein, M0, N0, k are integers.

[0111] Another optional implementation of this embodiment is: the information of the channel state information pilot also includes frequency domain density information of the channel state information pilot, and the base station indicates the position of the component group in the following manner.

[0112] The base station indicates the location of the component group through the frequency domain density information of the channel state information pilot, wherein, in each resource block, every K subcarriers are used to carry one component group, wherein K is a positive integer.

[0113] Each K subcarrier contains one element group, which can provide a channel state information pilot with a density greater than 1RE / RB / port, thereby improving the accuracy of channel estimation to support wireless transmission with a subcarrier spacing greater than 15kHz; K is indicated by the frequency domain density information of the pilot to control the frequency domain density of the pilot, thereby controlling the quality of channel estimation using the pilot.

[0114] For example, every K subcarriers contain one element group, and the patterns of each element group are the same; or, every K subcarriers have one element group, and the patterns of each element group are independent. For another example, the value of K is 1, there is one element group for each subcarrier, and there are 12 element groups on each resource block; the value of K is 2, there is one element group for every 2 subcarriers, and there are 6 element groups on each resource block; the value of K is 3, there is one element group for every 3 subcarriers, and there are 4 element groups on each resource block; the value of K is 4, there is one element group for every 4 subcarriers, and there are 3 element groups on each resource block; the value of K is 6, there is one element group for every 6 subcarriers, and there are 2 element groups on each resource block; the value of K is 12, there is one element group for every 12 subcarriers, and there is 1 element group on each resource block. For another example, the frequency domain density of the pilot is 1RE / RB / port, indicating that the value of K is 12, or the frequency domain density of the pilot is 2RE / RB / port, indicating that the value of K is 6, or the frequency domain density of the pilot is 3RE / RB / port, indicating that the value of K is 4, or the frequency domain density of the pilot is 4RE / RB / port, indicating that the value of K is 3, or the frequency domain density of the pilot is 6RE / RB / port, indicating that the value of K is 2, or the frequency domain density of the pilot is 12RE / RB / port, indicating that the value of K is 1.

[0115] Another optional implementation of this embodiment is: when the frequency domain density value indicated by the frequency domain density information is greater than 1, 12 can be divided by the frequency domain density value, wherein the frequency domain density value is the number of resource units occupied by the channel state information pilot pattern on each port and each resource block.

[0116] The frequency domain density value is a positive integer that can divide 12, and can provide a function of one element group for each integer number of subcarriers, thereby providing consistent pilot density in each frequency domain segment, thereby providing channel estimation performance with the same performance in each frequency domain position.

[0117] For example, the frequency domain density value is 2, with one element group for every 6 subcarriers; or, the frequency domain density value is 3, with one element group for every 4 subcarriers; or, the frequency domain density value is 4, with one element group for every 3 subcarriers; or, the frequency domain density value is 6, with one element group for every 2 subcarriers; or, the frequency domain density is 12, with one element group for every 1 subcarrier.

[0118] Another optional implementation of this embodiment is that the element groups are equally spaced in the frequency domain.

[0119] The component groups are equally spaced in the frequency domain, which can not only produce different frequency domain densities, but also make the components in the same group more compact, while reducing the transmission complexity and reception complexity of CSI-RS and saving signaling overhead.

[0120] For example: the component groups are equally spaced in units of RB, or the component groups are equally spaced in units of subcarriers, or the component groups are equally spaced in units of subcarriers occupied by the component groups, or the component groups are equally spaced in units of subcarriers spanned by the component groups. For another example, after excluding subcarriers occupied by other signals, the component groups are equally spaced; or after excluding subcarriers occupied by other channels, the component groups are equally spaced; or the component groups are equally spaced on predetermined subcarriers; or the component groups are equally spaced on pre-notified subcarriers.

[0121] Another optional implementation of this embodiment is: the base station notifies the number of RBs used by the patterns of the multiple element groups; or the base station notifies the terminal of the positions of resource blocks used by the patterns represented by the multiple element groups.

[0122] The base station notifies that the number of RBs occupied by the patterns of multiple element groups is M1, and the element groups form a pattern between the element groups in a certain relative position. The pattern between the element groups is repeated in units of M1 RBs under the bandwidth transmitted by the CSI-RS resource. The present application provides a variety of relative position patterns between element groups within a frequency domain range of M1 RBs, meeting the system's requirements for pattern position diversity and flexibility, while reducing the complexity of the system and saving signaling overhead. The relative position pattern between element groups includes the density between the element groups, and thus also includes the CSI-RS resource density. Wherein M1 is a positive integer.

[0123] The base station indicates the resource block positions used by the patterns represented by the multiple element groups to indicate the frequency domain positions of the CSI-RS transmissions, thereby indicating the frequency domain positions where the channel state needs to be estimated.

[0124] For example: the patterns of multiple element groups are on M1 RBs, and the element groups may be equally spaced or unequally spaced. The number of element groups N1 may be less than M1, greater than M1, or equal to M1; the number of RBs M1 used by the multiple element group patterns may be indicated by the denominator of the CSI-RS resource density; or the number of RBs M1 used by the multiple element group patterns may be directly indicated; or the number of element groups may be jointly encoded with the number of RBs used by the multiple element group patterns to save signaling overhead. Or the number of RBs used by the multiple element group patterns may be indicated using other frequency domain units, such as integer multiples of subcarriers, or integer multiples of RBs, or integer multiples of subcarriers occupied by an element group, or integer multiples of subcarriers spanned by an element group.

[0125] For example: the base station indicates whether the resource block positions used by the patterns represented by the multiple element groups are continuous or discontinuous; or the base station indicates the positions in units of groups formed by multiple resource blocks.

[0126] Another optional implementation of this embodiment is: for zero-power CSI-RS, the base station notifies multiple categories of components of CSI-RS resources and the locations of components of each category.

[0127] CSI-RS uses zero-power transmission. The CSI-RS resources for zero-power transmission are composed of various types of components, which can form various types of zero-power CSI-RS resource patterns to meet the requirements of flexibility and save signaling overhead. The base station notifies the locations of various types of components to form accurate zero-power CSI-RS resource patterns and locations.

[0128] For example: the categories of CSI-RS resource component elements notified by the base station can be categories divided by the number of REs, or categories divided by element patterns, such as (Y, Z) arrays, where Y is the number of frequency domain subcarriers occupied by the element, and Z is the number of time domain units occupied by the element; the base station can also notify the categories divided by element groups. The positions of components of different categories are notified by signaling at different levels; or the same level of signaling is used; or components of different categories are notified in the same way; or components of different categories are notified in different ways; or the positions of components of different categories are notified independently; or the positions of components of different categories are notified jointly. Alternatively, the positions of the components are predefined or configured, and then the positions of the components used by the transmitted zero-power CSI-RS resource pattern are indicated; or the positions of the components used by the transmitted zero-power CSI-RS resource pattern are configured; or the positions of some components used by the transmitted zero-power CSI-RS resource pattern are configured first, and then the positions of the remaining components are indicated.

[0129] Another optional implementation of this embodiment is: the base station notifies the locations of various types of components by a bit mapping (bimap) method.

[0130] The base station indicates the position of an element with one bit, indicates the use of the corresponding position with one state of the bit, and indicates the non-use of the corresponding position with another state of the bit; the base station indicates the positions of various types of elements that constitute the CSI-RS resources for zero-power transmission at the same time by bit mapping. This solution can provide flexibility in CSI-RS resource patterns and positions, while reducing system complexity and saving signaling overhead.

[0131] For example: each category element constituting the zero-power CSI-RS resource independently corresponds to a group of bits for bit mapping; or all category elements constituting the zero-power CSI-RS resource jointly correspond to a group of bits for bit mapping. Or the length of the byte group used can be configured; or the length of the byte group used is preset by the protocol. Or the number of bytes used can be configured; or the number of bytes used is preset by the protocol. Or the category elements used jointly correspond to a group of bits, and each category element uses bits in different intervals in the byte group, that is, bit segments; or the length of the bit segment used by each category element can be configured; or the length of each bit segment is configured separately; or the length of each bit segment is jointly configured; or the length of each bit segment is preset by the protocol; or the length of each bit segment is equal; or the number of bit segments can be configured; or the number of bit segments is preset by the protocol. Alternatively, the possible position range of the elements of the zero-power CSI-RS resource pattern is pre-selected and set by the protocol, and the element positions used by the zero-power CSI-RS resource pattern are then indicated by bit mapping; or the possible position range of the elements of the zero-power CSI-RS resource pattern is pre-configured, and the element positions used by the zero-power CSI-RS resource pattern are then indicated by bit mapping; or a part of the element positions of the zero-power CSI-RS resource pattern is pre-configured, and the remaining part of the element positions of the zero-power CSI-RS resource pattern are then indicated by bit mapping; or the bit positions of the zero-power CSI-RS resource pattern are pre-configured, and the modification of whether the part of the element positions are used or not is indicated by bit mapping.

[0132] Another optional implementation of this embodiment is: using one of the following methods for joint encoding: joint encoding of the number of CSI-RS ports and the component category; joint encoding of the component position; joint encoding of the component category and the component position; joint encoding of the number of CSI-RS ports and the component position.

[0133] The component categories that may be used by CSI-RS resources with different numbers of CSI-RS ports are independent, that is, a certain number of CSI-RS ports is correlated with its corresponding possible component category, so joint encoding of the number of CSI-RS ports and the component category can save signaling overhead; a group of component positions that form a specific resource pattern are correlated, so joint encoding of the component positions can save signaling overhead; the component category is correlated with the position of the corresponding component, so joint encoding of the component category and the component position can save signaling overhead; the number of CSI-RS ports is correlated with the position of the corresponding component, so joint encoding of the number of CSI-RS ports and the component position can save signaling overhead.

[0134] For example: There are M2 types of CSI-RS ports, N2 types of component categories, and L2 combined states of the actual CSI-RS port number and the component category. X2 serial numbers or states are used to indicate the CSI-RS port number and the component category corresponding to the CSI-RS resource, or X2 = L2; or L2 < X2 < M2 * N2, where the symbol "*" represents multiplication operation.

[0135] Another alternative implementation of this embodiment is: When there is no downlink transmission time slot for the time domain position of the constituent elements notified by the base station, the method further includes one of the following: The base station does not transmit channel state information pilots; The base station notifies a time window to the terminal and transmits the channel state information pilots in the first downlink time slot indicated by the notified time window; The base station notifies the transmission period of the channel state information pilots, and indicates the time domain position of the channel state information pilots by the number of downlink time slots included in the radio frame corresponding to the configured transmission period and the number of downlink time slots included in the radio frame corresponding to the transmission of the channel state information pilots.

[0136] Not transmitting the channel state information pilots provides a mechanism to avoid errors; The base station notifies a time window and transmits the channel state information pilots in the first downlink time slot indicated by the time window, providing an opportunity for retransmission, and being close to the timing when it should be transmitted in terms of time; The base station also notifies the transmission period of the channel state information pilots, and indicates the time domain position of the channel state information pilots by the number of downlink time slots included in the radio frame corresponding to the configured transmission period and the number of downlink time slots included in the radio frame corresponding to the transmission of the channel state information pilots, providing an opportunity for retransmission, and reducing the time slot burden for bearing the retransmission opportunity.

[0137] For example, the pilot is configured to be transmitted on T + S time slots, and there are only T downlink time slots in the radio frame for transmitting data. The base station does not transmit the pilot on the (T + S)-th time slot; or S is greater than T, or S is equal to T, or S is less than T.

[0138] For another example, the base station configures another time window U for the terminal, U is greater than S, and the pilot is transmitted in the first downlink time slot during the period from T + S to T + U, or U is greater than T, or U is equal to T, or U is less than T.

[0139] For another example, the number of downlink time slots included in the radio frame corresponding to the configured transmission period is A, the number of downlink time slots included in the radio frame corresponding to the transmission of the channel state information pilots is B, the configured transmission time slot is the (S + T)-th time slot, and the actual transmission time slot indicated is mod(S + T, B), where mod() is the remainder operation.

[0140] Another optional implementation of this embodiment is: the information of the constituent element includes the frequency domain position of the constituent element, wherein the base station notifies the terminal of the frequency domain position of the constituent element includes: the base station selects one for the constituent element from multiple frequency domain positions, and notifies the terminal of the frequency domain position selected for the constituent element, wherein the multiple frequency domain positions are pre-set, wherein when the constituent element occupies one subcarrier in the frequency domain, the frequency domain position of any subcarrier in the resource block is allowed to be the pre-set frequency domain position; when the constituent element occupies multiple subcarriers in the frequency domain, the interval between two adjacent pre-set frequency domain positions in the resource block is allowed to be two subcarriers.

[0141] When the size of a component in the frequency domain is one subcarrier, each subcarrier position in the resource block is a preset position, which can provide a position with a minimum accuracy of one subcarrier for a component whose size is one subcarrier; when the size of a component in the frequency domain is greater than one subcarrier, the interval between two adjacent preset positions is allowed to be 2 subcarriers, which can not only provide more optional positions for larger components, but also avoid the waste problem caused by the preset position being an arbitrary position.

[0142] For example, a component with a frequency domain size of 1 subcarrier may be (Y,Q)=(1,2), or (Y,Q)=(1,4); a resource block may be of size V, i.e., containing V subcarriers, V may be 12, or 24; each subcarrier in the resource block is a preset position. A component with a frequency domain size greater than 1 subcarrier may be (Y,Q)=(2,1), or (Y,Q)=(2,4), or (Y,Q)=(4,1), or (Y,Q)=(4,2), or (Y,Q)=(8,1). The preset position may be the 0th subcarrier, the 2nd subcarrier, the 4th subcarrier, the 6th subcarrier, the 8th subcarrier, the 10th subcarrier, or the 0th subcarrier, the 2nd subcarrier, or the 0th subcarrier, the 2nd subcarrier, the 4th subcarrier, or the 0th subcarrier, the 2nd subcarrier, the 4th subcarrier, the 6th subcarrier, or the 4th subcarrier, the 6th subcarrier, the 8th subcarrier.

[0143] Another optional implementation of this embodiment is: the base station notifies the category of the CSI-RS.

[0144] Different CSI-RS categories have different functions, or there are differences in the composition of CSI-RS resource patterns, or there are differences in the positions of CSI-RS resource patterns. Notifying CSI-RS category information can save the signaling overhead of notifying CSI-RS resource patterns and positions, and reduce system complexity.

[0145] For example: CSI-RS is used for obtaining a channel state category, or CSI-RS is used for a beam scanning category, or for a mobility management category, or for a phase tracking category.

[0146] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory / random access memory (ROM / RAM), a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods of various embodiments of the present invention.

[0147] Example 2

[0148] In an embodiment of the present invention, a transmission device for a channel state information pilot is also provided. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0149] Figure 3 is a schematic diagram of a transmission device for a channel state information pilot according to an embodiment of the present invention. Figure 3 As shown, the apparatus may include: a determination unit 32 , a sender 34 and a transmitter 36 .

[0150] A determining unit 32 is used to determine information of a channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports and information of constituent elements, the channel state information pilot port is used to transmit the channel state information pilot, and the channel state information pilot resource is used to carry the channel state information pilot;

[0151] A transmitter 34, configured to send information of a channel state information pilot to a terminal;

[0152] The transmitter 36 is configured to transmit a channel state information pilot.

[0153] Through the above embodiment, the determination unit determines the information of the channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports, the categories of components of the channel state information pilot resources and the information of the components, the channel state information pilot ports are used to transmit the channel state information pilot, and the channel state information pilot resources are used to carry the channel state information pilot; the transmitter transmits the information of the channel state information pilot to the terminal; the transmitter transmits the channel state information pilot, thereby solving the technical problems of poor channel measurement performance and high system complexity in the related technology, and achieving the technical effect of reducing system complexity and improving channel state measurement performance.

[0154] Optionally, the information of the constituent elements includes the time domain positions of the constituent elements, wherein the transmitter is further used to notify the terminal of the time domain positions of the constituent elements using a time domain position as a reference, wherein the time domain position used as a reference is determined in one of the following ways: the time domain position used as a reference is the last OFDM symbol of the time slot, the time domain position used as a reference is indicated by the category of the time slot, and the time domain position used as a reference is configured by upper layer signaling.

[0155] Optionally, there are multiple components, wherein the transmitter includes: a first notification module, used to notify the terminal of the selected relative position relationship, wherein the base station notifies the terminal of multiple relative position relationships between the multiple components in advance through upper layer signaling, and the selected relative position relationship is one of the multiple relative position relationships; a second notification module, used to send the category of the component and the number of channel state information pilot ports to the terminal, so as to indicate the relative position relationship between the multiple components through the category of the component and the number of the channel state information pilot ports; a third notification module, used to notify the terminal of the spacing information of the subcarrier, so as to indicate the relative position relationship between the multiple components through the spacing information of the subcarrier, wherein the subcarrier is an OFDM system A frequency domain unit that carries data or signals in the system, and the spacing information of the subcarriers is used to indicate the spacing between the frequency domain units; a fourth notification module is used to notify the terminal of the multiplexing mode information of the channel state information pilot port, so as to indicate the relative position relationship between multiple components through the multiplexing mode information of the channel state information pilot port, wherein the multiplexing mode information of the channel state information pilot port is used to indicate the way in which the ports jointly use wireless resources; a fifth notification module is used to notify the terminal of the information of the generation sequence of the channel state information pilot, so as to indicate the relative position relationship between multiple components through the information of the generation sequence of the channel state information pilot, wherein the information of the generation sequence is used to indicate the generation sequence used when generating the symbols of the channel state information pilot.

[0156] Optionally, there are multiple components, and the transmitter includes: a sixth notification module, used to notify the terminal of the relative position relationship between the multiple components through upper layer signaling, and to notify the terminal of the position of one of the multiple components through physical layer signaling; a seventh notification module, used to notify the terminal of the relative position relationship between the multiple components through physical layer signaling, and to notify the terminal of the position of one of the multiple components through upper layer signaling.

[0157] Optionally, the information of the constituent elements includes the time domain position and frequency domain position of the constituent elements, wherein the transmitter includes: a ninth notification module, used to notify the terminal of the position of the earliest OFDM symbol of the constituent elements in the time domain position and the position of the lowest frequency subcarrier of the constituent elements in the frequency domain position; a tenth notification module, used to notify the terminal of the position of the latest OFDM symbol of the constituent elements in the time domain position and the position of the highest frequency subcarrier of the constituent elements in the frequency domain position; an eleventh notification module, used to notify the terminal of the position of the latest OFDM symbol of the constituent elements in the time domain position and the position of the lowest frequency subcarrier of the constituent elements in the frequency domain position.

[0158] Optionally, constituent elements of the channel state information pilot resources include multiple element groups, and the transmitter includes: a twelfth notification module, used to notify the terminal of multiple position information of the multiple element groups, wherein each position information is used to indicate a position set for each element group in the multiple element groups.

[0159] Optionally, the location information of the element group includes the location of the resource block where the element group is located and the location of the subcarrier where the element group is located.

[0160] Optionally, the channel state information pilot information also includes frequency domain density information of the channel state information pilot, and the transmitter is also used to indicate the position of the element group through the frequency domain density information of the channel state information pilot, wherein, in each resource block, every K subcarriers are used to carry an element group, wherein K is a positive integer.

[0161] Optionally, when the frequency domain density value indicated by the frequency domain density information is greater than 1, 12 can be divided by the frequency domain density value, where the frequency domain density value is the number of resource units occupied by the channel state information pilot pattern on each port and each resource block.

[0162] Optionally, the device further comprises: a first notification unit, used to notify the terminal of the number of resource blocks used by the patterns represented by the multiple component groups; and a second notification unit, used to notify the terminal of the positions of the resource blocks used by the patterns represented by the multiple component groups.

[0163] Optionally, the apparatus further comprises: a third notification unit, configured to notify the terminal of multiple categories of constituent elements of the channel state information pilot resource and information of constituent elements of each category if the channel state information pilot is transmitted using zero power.

[0164] Optionally, the third notification unit is further configured to notify the terminal of the information of each category of component elements by bit mapping.

[0165] Optionally, when the transmitter sends the information of the channel state information pilot to the terminal, the transmitter adopts one of the following methods for joint encoding: jointly encoding the number of channel state information pilot ports and the category of constituent elements; jointly encoding the information of at least two constituent elements; jointly encoding the category of constituent elements and the information of constituent elements; jointly encoding the number of channel state information pilot ports and the information of constituent elements.

[0166] Optionally, in the case that the downlink transmission time slot of the time domain position of the component notified by the transmitter does not exist, the device also includes: a control unit, used to control the transmitter not to transmit a channel state information pilot; a fourth notification unit, used to notify a time window to the terminal, and transmit the channel state information pilot in the first downlink time slot indicated by the notified time window; a fifth notification unit, used to notify the transmission period of the channel state information pilot, and indicate the time domain position of the channel state information pilot by the number of time slots included in the subframe corresponding to the configured transmission period and the number of time slots of the subframe corresponding to the transmitted channel state information pilot.

[0167] Optionally, the information of the constituent element includes the frequency domain position of the constituent element, wherein the transmitter includes: a selection module, used to select one for the constituent element from multiple frequency domain positions, and notify the terminal of the frequency domain position selected for the constituent element, wherein the multiple frequency domain positions are pre-set, wherein when the constituent element occupies one subcarrier in the frequency domain, the frequency domain position where any subcarrier in the resource block is located is allowed to be the pre-set frequency domain position; when the constituent element occupies multiple subcarriers in the frequency domain, the interval between two adjacent pre-set frequency domain positions in the resource block is allowed to be two subcarriers.

[0168] Optionally, the device further includes: a sixth notification unit, configured to notify the terminal of the category of the channel state information pilot.

[0169] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0170] Example 3

[0171] An embodiment of the present invention further provides a storage medium. Optionally, in this embodiment, the storage medium may be configured to store program codes for executing the following steps:

[0172] S11, the base station determines information of a channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports, the types of components of a channel state information pilot resource and information of the components, the channel state information pilot port is used to transmit a channel state information pilot, and the channel state information pilot resource is used to carry the channel state information pilot;

[0173] S12, the base station sends channel state information pilot information to the terminal;

[0174] S13, the base station transmits a channel state information pilot.

[0175] Optionally, the storage medium is further configured to store program codes for executing the following steps:

[0176] S21, the base station notifies the terminal of the selected relative position relationship, wherein the base station notifies the terminal of multiple relative position relationships between multiple components in advance through upper layer signaling, and the selected relative position relationship is one of the multiple relative position relationships;

[0177] S22, the base station sends the types of component elements and the number of channel state information pilot ports to the terminal, so as to indicate the relative position relationship between the multiple component elements through the types of component elements and the number of channel state information pilot ports;

[0178] S23, the base station notifies the terminal of the subcarrier spacing information, so as to indicate the relative position relationship between the multiple components through the subcarrier spacing information, wherein the subcarrier is a frequency domain unit that carries data or signals in the OFDM system, and the subcarrier spacing information is used to indicate the spacing between the frequency domain units;

[0179] S24, the base station notifies the terminal of the multiplexing mode information of the channel state information pilot port, so as to indicate the relative position relationship between the multiple components through the multiplexing mode information of the channel state information pilot port, wherein the multiplexing mode information of the channel state information pilot port is used to indicate the mode in which the ports jointly use the wireless resources;

[0180] S24, the base station notifies the terminal of the information of the generation sequence of the channel state information pilot, so as to indicate the relative position relationship between multiple components through the information of the generation sequence of the channel state information pilot, wherein the information of the generation sequence is used to indicate the generation sequence used when generating the symbols of the channel state information pilot.

[0181] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0182] Optionally, in this embodiment, the processor executes according to the program code stored in the storage medium: the base station determines the information of the channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports, the categories of components of the channel state information pilot resources and the information of the components, the channel state information pilot ports are used to transmit the channel state information pilot, and the channel state information pilot resources are used to carry the channel state information pilot; the base station sends the information of the channel state information pilot to the terminal; the base station transmits the channel state information pilot.

[0183] Optionally, in this embodiment, the processor executes according to the program code stored in the storage medium: the base station notifies the terminal of the selected relative position relationship, wherein the base station notifies the terminal of multiple relative position relationships between multiple components in advance through upper layer signaling, and the selected relative position relationship is one of the multiple relative position relationships; the base station sends the category of the component element and the number of channel state information pilot ports to the terminal, so as to indicate the relative position relationship between the multiple component elements through the category of the component element and the number of channel state information pilot ports; the base station notifies the terminal of the spacing information of the subcarrier, so as to indicate the relative position relationship between the multiple component elements through the spacing information of the subcarrier, wherein the subcarrier is OFD The M system is a frequency domain unit that carries data or signals, and the spacing information of the subcarriers is used to indicate the spacing between the frequency domain units; the base station notifies the terminal of the multiplexing mode information of the channel state information pilot port, so as to indicate the relative position relationship between multiple components through the multiplexing mode information of the channel state information pilot port, wherein the multiplexing mode information of the channel state information pilot port is used to indicate the way in which the ports jointly use wireless resources; the base station notifies the terminal of the information of the generation sequence of the channel state information pilot, so as to indicate the relative position relationship between multiple components through the information of the generation sequence of the channel state information pilot, wherein the information of the generation sequence is used to indicate the generation sequence used when generating the symbols of the channel state information pilot.

[0184] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0185] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0186] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for receiving a channel state information pilot CSI-RS, characterized in that: include: The terminal receives the CSI-RS information, wherein the CSI-RS information is determined and sent by the base station, the CSI-RS information includes at least the number of CSI-RS ports and information of components of CSI-RS resources, the CSI-RS port is used to transmit the CSI-RS, and the CSI-RS resource is used to carry the CSI-RS; The terminal receives the CSI-RS sent by the base station; The information of the component element includes a time domain position and a frequency domain position of the component element, and the information of the component element notified by the base station received by the terminal includes at least one of the following: The terminal receives the position of the earliest orthogonal frequency division multiplexing OFDM symbol of the component in the time domain and the position of the lowest frequency subcarrier of the component in the frequency domain; The terminal receives the position of the latest OFDM symbol of the component element in the time domain and the position of the highest frequency subcarrier of the component element in the frequency domain; The terminal receives the position of the latest OFDM symbol of the component element in the time domain and the position of the lowest frequency subcarrier of the component element in the frequency domain.

2. The method according to claim 1, characterized in that The information of the component element includes the time domain position of the component element, and the information of the CSI-RS received by the terminal from the base station includes: The terminal receives the time domain position of the component notified by the base station using a time domain position as a reference; The time domain position used as a reference is determined by one of the following methods: the time domain position used as a reference is the last OFDM symbol of the time slot, the time domain position used as a reference is indicated by the category of the time slot, and the time domain position used as a reference is configured by upper layer signaling.

3. The method according to claim 1, characterized in that There are multiple components, and the information of the components includes the category of the components and the location of the components, and wherein the information of the multiple components notified by the base station received by the terminal includes at least one of the following: The terminal receives the selected relative position relationship notified by the base station, wherein the selected relative position relationship is one of a plurality of relative position relationships, and the plurality of relative position relationships are a plurality of relative position relationships between the plurality of component elements notified in advance by the base station to the terminal through upper layer signaling; The terminal receives the type of the component element and the number of the CSI-RS ports sent by the base station, where the type of the component element and the number of the CSI-RS ports indicate a relative position relationship between a plurality of the component elements; The terminal receives the subcarrier spacing information notified by the base station, where the subcarrier spacing information indicates the relative position relationship between the plurality of the constituent elements, wherein a subcarrier is a frequency domain unit that carries data or a signal in an OFDM system, and the subcarrier spacing information is used to indicate the spacing between the frequency domain units; The terminal receives the multiplexing mode information of the CSI-RS port notified by the base station, where the multiplexing mode information of the CSI-RS port indicates the relative position relationship between the plurality of the component elements, wherein the multiplexing mode information of the CSI-RS port is used to indicate the mode in which the ports jointly use wireless resources; The terminal receives information about the generation sequence of the CSI-RS notified by the base station, wherein the information about the generation sequence of the CSI-RS indicates a relative position relationship between the plurality of constituent elements, wherein the information about the generation sequence is used to indicate a generation sequence used when generating symbols of the CSI-RS.

4. The method according to claim 1, characterized in that: There are multiple components, and the terminal receives information of the multiple components notified by the base station, including: The terminal receives the relative position relationship between the plurality of the components notified by the base station through upper layer signaling, and the terminal receives the position of one of the plurality of the components notified by the base station through physical layer signaling; or, The terminal receives the relative position relationship between the multiple components notified by the base station through physical layer signaling, and the terminal receives the position of one of the multiple components notified by the base station through upper layer signaling.

5. The method according to claim 1, characterized in that The constituent elements of the CSI-RS resource include a plurality of element groups, and the method further includes: The terminal receives a plurality of position information of the plurality of component groups notified by the base station, wherein each piece of position information of the plurality of position information is used to indicate a position configured for each of the plurality of component groups.

6. The method according to claim 5, characterized in that The position information of the element group includes the position of the resource block where the element group is located and the position of the subcarrier where the element group is located.

7. The method according to claim 5, characterized in that The CSI-RS information also includes frequency domain density information of the CSI-RS, and the position of the element group is indicated by the base station through the frequency domain density information of the CSI-RS, wherein, in each resource block, every K subcarriers are used to carry one element group among the multiple element groups, wherein K is a positive integer.

8. The method according to claim 7, characterized in that Corresponding to the frequency domain density value indicated by the frequency domain density information being greater than 1, 12 can be divided by the frequency domain density value, wherein the frequency domain density value is the number of resource units occupied by the CSI-RS pattern on each port and each resource block.

9. The method according to claim 5, characterized in that The method further comprises: The terminal receives the number of resource blocks used by the pattern represented by the plurality of element groups notified by the base station; or The terminal receives resource block positions used by the patterns represented by the plurality of element groups notified by the base station.

10. The method according to claim 1, characterized in that The method further comprises: Corresponding to the CSI-RS adopting zero-power transmission, the terminal receives multiple categories of constituent elements of the CSI-RS resource and positions of constituent elements of each category notified by the base station.

11. The method according to claim 10, characterized in that The location of each category of the component element notified by the base station received by the terminal includes: The terminal receives the position of the component element of each category notified by the base station in a bit mapping manner.

12. The method according to claim 1, characterized in that The information of the component element includes the type of the component element and the position of the component element, and the information of the CSI-RS notified by the base station is jointly encoded in one of the following ways: The number of the CSI-RS ports is jointly encoded with the type of the component; The positions of at least two of the constituent elements are jointly encoded; The category of the component element is jointly encoded with the position of the component element; The number of the CSI-RS ports is jointly encoded with the position of the constituent elements.

13. The method according to claim 1, characterized in that Corresponding to the fact that the downlink transmission time slot of the time domain position of the component notified by the base station does not exist, the method further includes one of the following: The terminal receives the time window notified by the base station, and receives the CSI-RS sent by the base station in the first downlink time slot indicated by the notified time window; The terminal receives the transmission period of the CSI-RS notified by the base station, wherein the number of downlink time slots contained in the configured wireless frame corresponding to the transmission period and the number of downlink time slots contained in the wireless frame corresponding to the transmission of the CSI-RS are used to indicate the time domain position of the CSI-RS.

14. The method according to claim 1, characterized in that The information of the component element includes the frequency domain position of the component element, and wherein the frequency domain position of the component element notified by the base station received by the terminal includes: The terminal receives a frequency domain position selected for the component element, wherein the frequency domain position selected by the component element is a position selected by the base station for the component element from a plurality of frequency domain positions, and the plurality of frequency domain positions are preset, Among them, corresponding to the component occupying one subcarrier in the frequency domain, the frequency domain position of any subcarrier in the resource block is allowed to be a pre-set frequency domain position; corresponding to the component occupying multiple subcarriers in the frequency domain, the interval between two adjacent pre-set frequency domain positions in the resource block is allowed to be two subcarriers.

15. The method according to claim 1, characterized in that The method further comprises: The terminal receives the type of the CSI-RS notified by the base station.

16. A channel state information pilot CSI-RS receiving device, characterized in that: include: A processor and a memory, wherein the memory stores program instructions, and when the program instructions are executed by the processor, the following operations are implemented: receiving the CSI-RS information, wherein the CSI-RS information is determined and sent by a base station, the CSI-RS information includes at least the number of CSI-RS ports and information of CSI-RS resource components, the CSI-RS port is used to transmit the CSI-RS, and the CSI-RS resource is used to carry the CSI-RS; receiving the CSI-RS sent by the base station; The information of the component element includes a time domain position and a frequency domain position of the component element, and the operation of receiving the information of the component element notified by the base station includes at least one of the following: Receiving the position of the earliest orthogonal frequency division multiplexing OFDM symbol of the component element in the time domain and the position of the lowest frequency subcarrier of the component element in the frequency domain; Receiving the position of the latest OFDM symbol of the component element in the time domain and the position of the highest frequency subcarrier of the component element in the frequency domain; The position where the latest OFDM symbol of the component element is located in the time domain and the position where the lowest frequency subcarrier of the component element is located in the frequency domain are received.

17. The device according to claim 16, characterized in that The information of the component element includes the time domain position of the component element, and when the program instruction is executed by the processor, the operation of receiving the information of the CSI-RS sent by the base station is also implemented in the following manner: receiving the time domain position of the component notified by the base station using a time domain position as a reference, The time domain position used as a reference is determined by one of the following methods: the time domain position used as a reference is the last OFDM symbol of the time slot, the time domain position used as a reference is indicated by the category of the time slot, and the time domain position used as a reference is configured by upper layer signaling.

18. The device according to claim 16, characterized in that There are multiple components, and the information of the components includes the category of the components and the location of the components, and wherein when the program instructions are executed by the processor, the operation of receiving the information of the multiple components notified by the base station is also implemented by at least one of the following: Receiving the selected relative position relationship notified by the base station, wherein the selected relative position relationship is one of a plurality of relative position relationships, and the plurality of relative position relationships are a plurality of relative position relationships between a plurality of the component elements notified in advance by the base station to the apparatus through upper layer signaling; receiving the type of the component element and the number of the CSI-RS ports sent by the base station, where the type of the component element and the number of the CSI-RS ports indicate a relative position relationship between a plurality of the component elements; receiving subcarrier spacing information notified by the base station, wherein the subcarrier spacing information indicates a relative positional relationship between a plurality of the constituent elements, wherein a subcarrier is a frequency domain unit that carries data or a signal in an OFDM system, and the subcarrier spacing information is used to indicate a spacing between the frequency domain units; receiving the multiplexing mode information of the CSI-RS port notified by the base station, wherein the multiplexing mode information of the CSI-RS port indicates the relative position relationship between the plurality of the component elements, wherein the multiplexing mode information of the CSI-RS port is used to indicate the mode in which the ports jointly use wireless resources; Receive information on the CSI-RS generation sequence notified by the base station, wherein the information on the CSI-RS generation sequence indicates a relative position relationship between a plurality of the constituent elements, wherein the information on the generation sequence is used to indicate a generation sequence used when generating symbols of the CSI-RS.

19. The device according to claim 16, characterized in that There are multiple components, wherein when the program instructions are executed by the processor, the operation of receiving information of the multiple components notified by the base station is also implemented in the following manner: receiving the relative position relationship between the plurality of the components notified by the base station through upper layer signaling, and receiving the position of one of the plurality of the components notified by the base station through physical layer signaling; or, The relative position relationship between the plurality of the components is received by the base station through physical layer signaling, and the position of one of the plurality of the components is received by the base station through upper layer signaling.

20. The device according to claim 16, characterized in that The constituent elements of the CSI-RS resource include a plurality of element groups, and when the program instructions are executed by the processor, the following operations are further implemented: A plurality of position information of the plurality of component groups notified by the base station is received, wherein each piece of position information of the plurality of position information is used to indicate a position configured for each of the plurality of component groups.

21. The device according to claim 20, characterized in that The position information of the element group includes the position of the resource block where the element group is located and the position of the subcarrier where the element group is located.

22. The device according to claim 20, characterized in that The CSI-RS information also includes frequency domain density information of the CSI-RS, and the position of the element group is indicated by the base station through the frequency domain density information of the CSI-RS, wherein, in each resource block, every K subcarriers are used to carry one element group among the multiple element groups, wherein K is a positive integer.

23. The device according to claim 22, characterized in that Corresponding to the frequency domain density value indicated by the frequency domain density information being greater than 1, 12 can be divided by the frequency domain density value, wherein the frequency domain density value is the number of resource units occupied by the CSI-RS pattern on each port and each resource block.

24. The device according to claim 20, characterized in that When the program instructions are executed by the processor, the following operations are also implemented: receiving the number of resource blocks used by the patterns represented by the plurality of element groups notified by the base station; or The resource block positions used by the patterns represented by the plurality of element groups notified by the base station are received.

25. The device according to claim 16, characterized in that When the program instructions are executed by the processor, the following operations are also implemented: Corresponding to the CSI-RS adopting zero-power transmission, multiple categories of constituent elements of the CSI-RS resource and positions of constituent elements of each category notified by the base station are received.

26. The device according to claim 25, characterized in that When the program instructions are executed by the processor, the operation of receiving the position of each category of the component element notified by the base station is implemented in the following manner: The receiving base station notifies the location of each category of the component elements in a bit mapping manner.

27. The device according to claim 16, characterized in that The information of the component element includes the type of the component element and the position of the component element, and the information of the CSI-RS notified by the base station is jointly encoded in one of the following ways: The number of the CSI-RS ports is jointly encoded with the type of the component; The positions of at least two of the constituent elements are jointly encoded; The category of the component element is jointly encoded with the position of the component element; The number of the CSI-RS ports is jointly encoded with the position of the constituent elements.

28. The device according to claim 16, characterized in that Corresponding to the absence of a downlink transmission time slot of the time domain position of the component notified by the transmitter, the program instructions, when executed by the processor, further implement one of the following operations: Receiving the time window notified by the base station, and receiving the CSI-RS sent by the base station in the first downlink time slot indicated by the notified time window; Receive the transmission period of the CSI-RS notified by the base station, wherein the number of downlink time slots contained in the configured wireless frame corresponding to the transmission period and the number of downlink time slots contained in the wireless frame corresponding to the transmission of the CSI-RS are used to indicate the time domain position of the CSI-RS.

29. The device according to claim 16, characterized in that The information of the component element includes the frequency domain position of the component element, and wherein, when the program instruction is executed by the processor, the operation of receiving the frequency domain position of the component element notified by the base station is also implemented in the following manner: receiving a frequency domain position selected for the component element, wherein the frequency domain position selected for the component element is a position selected by the base station for the component element from a plurality of frequency domain positions, and the plurality of frequency domain positions are preset, Among them, corresponding to the component occupying one subcarrier in the frequency domain, the frequency domain position of any subcarrier in the resource block is allowed to be a pre-set frequency domain position; corresponding to the component occupying multiple subcarriers in the frequency domain, the interval between two adjacent pre-set frequency domain positions in the resource block is allowed to be two subcarriers.

30. The device according to claim 16, characterized in that When the program instructions are executed by the processor, the following operations are also implemented: Receive the type of the CSI-RS notified by the base station.

31. A storage medium, characterized in that: The storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 15 when executed.

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