Information transmission method and device, communication equipment, storage medium and program product

Abstract

The invention relates to an information transmission method and device, communication equipment, a storage medium and a program product. The method comprises: determining time-frequency resources corresponding to a plurality of channel state information reference signal (CSI-RS) resources, the total CSI-RS port number corresponding to the plurality of CSI-RS resources being greater than a port number threshold, the time-frequency resources comprising at least one physical resource block (PRB) resource and at least one time slot resource; and sending the plurality of CSI-RS resources to the terminal UE on the time frequency resource. The method can be applied to the CSI measurement process in a large-scale MIMO scene.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an information transmission method, apparatus, communication equipment, storage medium, and program product. Background Technology

[0002] The base station can send a Channel State Information Reference Signal (CSI-RS) to the UE (User Equipment). The UE performs CSI measurements on the downlink communication channel based on the CSI-RS and then feeds back the measurement results to the base station. The base station then performs beam optimization based on the measurement results, thereby improving transmission efficiency.

[0003] The existing NR protocol allows the base station to send CSI-RS to the terminal with a maximum of 32 CSI-RS ports for CSI measurement. However, with the rapid development of massive MIMO (Multi-input Multi-output) technology, the above-mentioned CSI-RS transmission method is no longer suitable for CSI measurement in massive MIMO scenarios. Summary of the Invention

[0004] This application provides an information transmission method, apparatus, communication device, storage medium, and program product that can be applied to CSI measurement processes in large-scale MIMO scenarios.

[0005] In a first aspect, this application provides an information transmission method for a base station, the method comprising:

[0006] Determine the time-frequency resources corresponding to multiple Channel State Information Reference Signals (CSI-RS) resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than a port number threshold, and the time-frequency resources include at least one Physical Resource Block (PRB) resource and at least one time slot resource.

[0007] The multiple CSI-RS resources are transmitted to the terminal UE on the time-frequency resources.

[0008] In one embodiment, the plurality of CSI-RS resources belong to the same CSI-RS resource set, each CSI-RS resource corresponds to the same number of CSI-RS ports, each CSI-RS resource corresponds to the same density, and each CSI-RS resource corresponds to the same code division multiplexing type.

[0009] In one embodiment, when the time-frequency resources include multiple consecutive PRB resources and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on the multiple PRB resources are continuous or discontinuous, and the symbols occupied by each CSI-RS resource on the multiple time slot resources are continuous or discontinuous.

[0010] In one embodiment, when the time-frequency resource includes a plurality of consecutive PRB resources and a time slot resource, the subcarriers occupied by each of the CSI-RS resources on the plurality of PRB resources are continuous or discontinuous, and the symbols occupied by each of the CSI-RS resources on the one time slot resource are continuous or discontinuous.

[0011] In one embodiment, when the time-frequency resources include a PRB resource and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on the PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on the multiple time slot resources may be continuous or discontinuous.

[0012] In one embodiment, when the time-frequency resource includes a PRB resource and a time slot resource, the subcarriers occupied by each CSI-RS resource on the PRB resource are continuous or discontinuous, and the symbols occupied by each CSI-RS resource on the time slot resource are continuous or discontinuous.

[0013] In one embodiment, transmitting the plurality of CSI-RS resources to the UE on the time-frequency resources includes:

[0014] Determine the time-domain start position and frequency-domain start position of each CSI-RS resource on the time-frequency resource;

[0015] According to each of the time-domain start positions and each of the frequency-domain start positions, the plurality of CSI-RS resources are sent to the UE on the time-frequency resources.

[0016] In one embodiment, the method further includes:

[0017] Send a first signaling to the UE, the first signaling being used at least to indicate the time domain start position and the frequency domain start position corresponding to each of the CSI-RS resources.

[0018] In one embodiment, the first signaling includes a first field corresponding to each of the CSI-RS resources and a second field corresponding to each of the CSI-RS resources. The first field is used to indicate the time domain start position corresponding to the CSI-RS resource, and the second field is used to indicate the frequency domain start position corresponding to the CSI-RS resource.

[0019] In one embodiment, before determining the time-frequency resources corresponding to the multiple CSI-RS resources, the method further includes:

[0020] The number of CSI-RS ports corresponding to each CSI-RS resource is determined based on the number of idle REs;

[0021] The resource quantity of the plurality of CSI-RS resources is determined based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each of the CSI-RS resources.

[0022] Secondly, this application also provides an information transmission method for a UE, the method comprising:

[0023] On time-frequency resources corresponding to multiple CSI-RS resources, the base station sends the multiple CSI-RS resources, the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource;

[0024] The measurement results are obtained by measuring the multiple CSI-RS resources, and the measurement results are fed back to the base station.

[0025] In one embodiment, the method further includes:

[0026] Receive the first signaling sent by the base station;

[0027] The step of receiving the multiple CSI-RS resources sent by the base station on the time-frequency resources corresponding to the multiple CSI-RS resources includes:

[0028] According to the time-domain start position and frequency-domain start position corresponding to each of the CSI-RS resources indicated by the first signaling, the plurality of CSI-RS resources are received on the time-frequency resources.

[0029] In one embodiment, the first signaling includes a first field corresponding to each of the CSI-RS resources and a second field corresponding to each of the CSI-RS resources, and the method further includes:

[0030] For each CSI-RS resource, the time domain start position corresponding to the CSI-RS resource is determined according to the first field corresponding to the CSI-RS resource in the first signaling, and the frequency domain start position corresponding to the CSI-RS resource is determined according to the second field corresponding to the CSI-RS resource in the first signaling.

[0031] Thirdly, this application also provides an apparatus for a base station, the apparatus comprising:

[0032] The first determining module is willing to determine time-frequency resources corresponding to multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource;

[0033] The first transmitting module is used to transmit the plurality of CSI-RS resources to the UE on the time-frequency resources.

[0034] Fourthly, this application also provides an apparatus for a UE, the apparatus comprising:

[0035] The first receiving module is configured to receive the multiple CSI-RS resources sent by the base station on the time-frequency resources corresponding to the multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the number of ports threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource.

[0036] The third transmitting module is used to measure the multiple CSI-RS resources, obtain measurement results, and feed back the measurement results to the base station.

[0037] Fifthly, this application also provides a communication device. The communication device includes: a transmitter and a processor;

[0038] The processor is configured to determine time-frequency resources corresponding to multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than a port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource;

[0039] The transmitter is used to transmit the plurality of CSI-RS resources to the UE on the time-frequency resources.

[0040] Sixthly, this application also provides a communication device. The communication device includes: a receiver and a transmitter;

[0041] The receiver is configured to receive the multiple CSI-RS resources sent by the base station on the time-frequency resources corresponding to the multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the number of ports threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource.

[0042] The transmitter is used to measure the plurality of CSI-RS resources to obtain measurement results and to feed back the measurement results to the base station.

[0043] In a seventh aspect, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in the first aspect above.

[0044] Eighthly, this application also provides a computer program product, including a computer program, characterized in that, when the computer program is executed by a processor, it implements the steps of the method described in the first aspect above.

[0045] The aforementioned information transmission method, apparatus, communication equipment, storage medium, and program product enable the base station to transmit multiple CSI-RS resources to the UE on time-frequency resources, including at least one Physical Resource Block (PRB) resource and at least one time slot resource, by determining the time-frequency resources corresponding to multiple CSI-RS resources. Since the total number of CSI-RS ports corresponding to the multiple CSI-RS resources in this information transmission method is greater than the port number threshold, the UE can simultaneously measure the total number of CSI-RS interfaces, which is greater than the port number threshold, based on the received multiple CSI-RS resources. This makes the information transmission method applicable to CSI measurement processes in large-scale MIMO scenarios. Furthermore, since the time-frequency resources include at least one Physical Resource Block (PRB) resource and at least one time slot resource, the problem of the base station being unable to transmit multiple CSI-RS resources to the UE due to insufficient time-frequency resources can be avoided, ensuring the reliability of the base station transmitting multiple CSI-RS resources to the UE. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a diagram illustrating the application environment of an information transmission method in one embodiment.

[0048] Figure 2 This is a flowchart illustrating an information transmission method in one embodiment;

[0049] Figure 3a This is a schematic diagram illustrating the use of multiple PRB resources and multiple time slot resources by CSI-RS resources in one embodiment;

[0050] Figure 3b This is a schematic diagram illustrating the use of multiple PRB resources and multiple time slot resources by CSI-RS resources in another embodiment;

[0051] Figure 4a This is a schematic diagram illustrating how CSI-RS resources occupy multiple PRB resources and one time slot resource in one embodiment;

[0052] Figure 4b This is a schematic diagram illustrating the CSI-RS resource occupies multiple PRB resources and one time slot resource in another embodiment;

[0053] Figure 5a This is a schematic diagram illustrating the use of one PRB resource and multiple time slot resources by CSI-RS resources in one embodiment;

[0054] Figure 5b This is a schematic diagram illustrating the CSI-RS resource occupies one PRB resource and multiple time slot resources in another embodiment;

[0055] Figure 6a This is a schematic diagram illustrating the use of one PRB resource and one time slot resource by CSI-RS resources in one embodiment;

[0056] Figure 6b This is a schematic diagram illustrating the CSI-RS resource occupying one PRB resource and one time slot resource in another embodiment;

[0057] Figure 7 This is a flowchart illustrating the information transmission method in another embodiment;

[0058] Figure 8 This is a flowchart illustrating the information transmission method in another embodiment;

[0059] Figure 9 This is a flowchart illustrating the information transmission method in another embodiment;

[0060] Figure 10 This is a flowchart illustrating the information transmission method in another embodiment;

[0061] Figure 11 This is a structural block diagram of an information transmission device in one embodiment;

[0062] Figure 12 This is a structural block diagram of the information transmission device in another embodiment;

[0063] Figure 13 This is a structural block diagram of the information transmission device in another embodiment;

[0064] Figure 14 This is a structural block diagram of the information transmission device in another embodiment;

[0065] Figure 15 This is a diagram of the internal structure of a base station in one embodiment;

[0066] Figure 16 This is a diagram of the internal structure of a UE in one embodiment. Detailed Implementation

[0067] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0068] Figure 1 This is a schematic diagram illustrating an application scenario for information transmission provided in an embodiment of this application. For example... Figure 1 As shown, this scenario involves base station 100 and UE200. Data transmission between base station 100 and UE200 occurs via a network. Base station 100 sends multiple CSI-RS resources to UE200 on defined time-frequency resources.

[0069] Among them, base station 100 can be a base station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB or eNodeB) in LTE, a relay station or access point, or a base station in a 5G network, etc., and is not limited here.

[0070] UE200 can be a wireless terminal, which can be a device providing voice and / or other service data connectivity to a user, a handheld device with wireless connectivity, or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) or a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device, exchanging voice and / or data with the RAN. The wireless terminal can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, access terminal, user terminal, user agent, user device, or user equipment, without limitation herein.

[0071] In traditional technologies, to enhance communication efficiency between the base station and the UE, the CSI (Continuous Signal Indicator) of the downlink communication channel can be detected. In existing NR protocols, the base station can send CSI-RS resources specifying multiple CSI-RS ports to the UE. The terminal evaluates the CSI of the downlink communication channel based on the received CSI-RS resources and returns the evaluation results to the base station. The base station then performs beam optimization based on the evaluation results, thereby improving transmission efficiency. Typically, each CSI-RS resource can measure up to 32 CSI-RS ports.

[0072] With the development of massive MIMO technology, the number of antennas supported by base stations and UEs is constantly increasing, and the maximum number of CSI-RS ports that each CSI-RS resource can measure also needs to increase accordingly. Therefore, traditional technologies have limitations in measuring CSI in massive MIMO scenarios.

[0073] Based on the aforementioned traditional technologies, this application provides an information transmission method. The base station, by determining the time-frequency resources corresponding to multiple CSI-RS resources, can transmit these resources to the UE on time-frequency resources including at least one Physical Resource Block (PRB) resource and at least one time slot resource. Since the total number of CSI-RS ports corresponding to the multiple CSI-RS resources in this information transmission method is greater than a port number threshold, the UE can simultaneously measure the total number of CSI-RS interfaces (which is greater than the port number threshold) based on the received multiple CSI-RS resources. This makes the information transmission method applicable to CSI measurement processes in large-scale MIMO scenarios. Furthermore, since the time-frequency resources include at least one Physical Resource Block (PRB) resource and at least one time slot resource, the problem of the base station being unable to transmit multiple CSI-RS resources to the UE due to insufficient time-frequency resources is avoided, ensuring the reliability of the base station transmitting multiple CSI-RS resources to the UE.

[0074] It should be noted that the beneficial effects or technical problems solved by the embodiments of this application are not limited to this one, but may also be other implicit or related problems. For details, please refer to the description of the embodiments below.

[0075] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0076] In one embodiment, such as Figure 2 As shown, an information transmission method is provided, which is applied to... Figure 1 Taking base station 100 as an example, the explanation includes the following steps:

[0077] S201, determine the time-frequency resources corresponding to multiple Channel State Information Reference Signal (CSI-RS) resources, the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one Physical Resource Block (PRB) resource and at least one time slot resource.

[0078] CSI-RS is used to instruct the terminal (User Equipment, UE) to measure the quality of the wireless channel and feed the measurement results back to the base station so that the base station can perform operations such as beamforming based on the measurement results.

[0079] It should be noted that when the base station sends CSI-RS resources to the UE, it needs to map the CSI-RS resources onto time-frequency resources and then send the CSI-RS resources to the UE through the time-frequency resources. Time-frequency resources include time-domain resources and frequency-domain resources. The smallest time-frequency resource refers to a subcarrier within an OFDM (Orthogonal Frequency Division Multiplexing) symbol, which is called a resource element. The OFDM symbol is the smallest granularity in time-frequency resources, and the subcarrier is the smallest granularity in frequency-domain resources. Typically, 7 OFDM symbols can form a time slot resource in the time domain, and 12 subcarriers can form an RRB resource in the frequency domain.

[0080] The port number threshold can be the maximum number of CSI-RS ports supported by existing NR protocols, such as 32 CSI-RS ports. In this embodiment, since the total number of CSI-RS ports is greater than the port number threshold, if the time-frequency resources include one PRB resource and one time slot resource, it may not be able to accommodate multiple CSI-RS resources when the total number of CSI-RS ports is much greater than the port number threshold. Therefore, in this embodiment, the time-frequency resources determined by the base station include at least one PRB resource and at least one time slot resource. For example, it may include one PRB resource and one time slot resource, or one PRB resource and multiple time slot resources, or multiple PRB resources and one time slot resource, or multiple PRB resources and multiple time slot resources.

[0081] Understandably, to meet the measurement requirements of massive MIMO technology between the base station and the UE, it is necessary to support the measurement of more CSI-RS ports, and the time-frequency resources occupied by CSI-RS resources are also greater. To reduce the complexity of multi-port design while meeting the measurement requirements of massive MIMO technology, multiple CSI-RS resources can be aggregated based on existing time-frequency resource reuse to obtain aggregated CSI-RS resources. Therefore, in this embodiment, it is necessary to determine the time-frequency resources corresponding to the aggregated multiple CSI-RS resources.

[0082] In this embodiment, the base station can determine the time-frequency resources corresponding to multiple CSI-RS resources where the total number of CSI-RS ports is greater than a port number threshold, based on time-frequency resources including at least one Physical Resource Block (PRB) resource and at least one time slot resource. The specific processes for determining the time-frequency resources corresponding to multiple Channel State Information Reference Signal (CSI-RS) resources described above are described in detail below.

[0083] Method 1: When the time-frequency resources include multiple consecutive PRB resources and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on multiple PRB resources are continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources are continuous or discontinuous.

[0084] It should be noted that, in the process of the base station sending CSI-RS resources to the UE in the same instance, in order to improve the accuracy of the UE receiving CSI-RS resources, the base station can map multiple CSI-RS resources to multiple consecutive PRB resources or consecutive time slot resources.

[0085] Specifically, the base station can determine the time-frequency resources corresponding to each CSI-RS resource based on the amount of idle resources in the time-frequency resources. For example, if there are many idle resources in the time-frequency resources, the subcarriers can be discontinuous on each PRB resource, and the symbols can be discontinuous on each time slot resource; if there are few idle resources in the time-frequency resources, the subcarriers can be continuous on each PRB resource, and the symbols can be continuous on each time slot resource.

[0086] For example, if the total number of CSI-RS ports is 128, the base station can map these 128 CSI-RS ports to 4 CSI-RS resources. Each CSI-RS resource corresponds to 32 CSI-RS ports, and these 4 CSI-RS resources can be mapped to time-frequency resources including two PRB resources and two time slot resources. Figure 3a and Figure 3b As shown, the time-frequency resources include time slot 1, time slot 2, PRB1, and PRB2, and the CSI-RS resources are: CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3, and CSI-RS resource 4. Specifically, CSI-RS resource 1 is mapped to the time-frequency resources composed of time slot 1 and PRB1; CSI-RS resource 2 can be mapped to the time-frequency resources composed of time slot 2 and PRB1; CSI-RS resource 3 can be mapped to the time-frequency resources composed of time slot 1 and PRB2; and CSI-RS resource 4 can be mapped to the time-frequency resources composed of time slot 2 and PRB2. Figure 3a and Figure 3b These represent the different mapping positions of each CSI-RS resource on the time-frequency resource.

[0087] Method 2: When the time-frequency resources include multiple consecutive PRB resources and one time slot resource, the subcarriers occupied by each CSI-RS resource on multiple PRB resources are continuous or discontinuous, and the symbols occupied by each CSI-RS resource on one time slot resource are continuous or discontinuous.

[0088] Understandably, a base station can also map multiple CSI-RS resources to multiple PRB resources and one time slot resource. If there are many idle resources in the time-frequency resources, then the subcarriers can be discontinuous on each PRB resource, and the symbols can be discontinuous on a time slot resource; if there are few idle resources in the time-frequency resources, then the subcarriers can be continuous on each PRB resource, and the symbols can be continuous on a time slot resource.

[0089] For example, if the total number of CSI-RS ports is 128, the base station can map these 128 CSI-RS ports to 4 CSI-RS resources. Each CSI-RS resource corresponds to 32 CSI-RS ports, and these 4 CSI-RS resources can be mapped to time-frequency resources including two PRB resources and one time slot resource. Figure 4a and Figure 4b As shown, the time-frequency resources include time slot 1, PRB1, and PRB2, and the CSI-RS resources are: CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3, and CSI-RS resource 4. Specifically, CSI-RS resource 1 can be mapped to the time-frequency resources composed of time slot 1 and PRB1; CSI-RS resource 2 can be mapped to the time-frequency resources composed of time slot 1 and PRB1; CSI-RS resource 3 can be mapped to the time-frequency resources composed of time slot 1 and PRB2; and CSI-RS resource 4 can be mapped to the time-frequency resources composed of time slot 1 and PRB2. Figure 4a and Figure 4b These represent the different mapping positions of each CSI-RS resource on the time-frequency resource.

[0090] Method 3: When the time-frequency resources include one PRB resource and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on one PRB resource are continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources are continuous or discontinuous.

[0091] Understandably, a base station can map multiple CSI-RS resources onto one PRB resource and multiple time slot resources. If there are many idle resources in the time-frequency resources, then subcarriers can be discontinuous on a PRB resource, and symbols can be discontinuous on each time slot resource; if there are few idle resources in the time-frequency resources, then subcarriers can be continuous on a PRB resource, and symbols can be continuous on each time slot resource.

[0092] For example, if the total number of CSI-RS ports is 128, the base station can map these 128 CSI-RS ports to 4 CSI-RS resources. Each CSI-RS resource corresponds to 32 CSI-RS ports, and these 4 CSI-RS resources can be mapped to time-frequency resources including one PRB resource and two time slot resources. Figure 5a and Figure 5b As shown, the time-frequency resources include time slot 1, time slot 2, and PRB1, and the CSI-RS resources are: CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3, and CSI-RS resource 4. Specifically, CSI-RS resource 1 can be mapped to the time-frequency resources composed of time slot 1 and PRB1; CSI-RS resource 2 can be mapped to the time-frequency resources composed of time slot 1 and PRB1; CSI-RS resource 3 can be mapped to the time-frequency resources composed of time slot 2 and PRB1; and CSI-RS resource 4 can be mapped to the time-frequency resources composed of time slot 2 and PRB1. Figure 5a and Figure 5b These represent the different mapping positions of each CSI-RS resource on the time-frequency resource.

[0093] Method 4: When the time-frequency resources include one PRB resource and one time slot resource, the subcarriers occupied by each CSI-RS resource on one PRB resource are continuous or discontinuous, and the symbols occupied by each CSI-RS resource on one time slot resource are continuous or discontinuous.

[0094] Understandably, when the number of CSI-RS ports is small, the base station can map multiple CSI-RS resources to one PRB resource and one timeslot resource. If there are many idle resources in the time-frequency resources, subcarriers can be discontinuous on a PRB resource, and symbols can be discontinuous on each timeslot resource; if there are few idle resources in the time-frequency resources, subcarriers can be continuous on a PRB resource, and symbols can be continuous on each timeslot resource.

[0095] For example, if the total number of CSI-RS ports is 64, the base station can map these 64 CSI-RS ports to 2 CSI-RS resources. Each CSI-RS resource corresponds to 32 CSI-RS ports, and these 2 CSI-RS resources can be mapped to time-frequency resources that include one time slot resource and one PRB resource. Figure 6a and Figure 6b As shown, the time-frequency resources include time slot 1 and PRB1, and the CSI-RS resources are CSI-RS resource 1 and CSI-RS resource 2. CSI-RS resource 1 can be mapped to the time-frequency resources composed of time slot 1 and PRB1, and CSI-RS resource 2 can be mapped to the time-frequency resources composed of time slot 1 and PRB1. Figure 6a and Figure 6b These represent the different mapping positions of each CSI-RS resource on the time-frequency resource.

[0096] It should be noted that when aggregating CSI-RS resources, multiple CSI-RS resources sent by the base station can belong to the same CSI-RS resource set, and each CSI-RS resource has the same number of CSI-RS ports, the same density, and the same code division multiplexing type. This avoids the problem of non-standard mapping of CSI-RS resources on time and frequency resources, which could lead to the UE being unable to obtain accurate CSI-RS resources and thus inaccurate channel measurement results.

[0097] The number of CSI-RS ports refers to the number of ports that a UE can measure based on a single CSI-RS resource. The code division multiplexing type refers to the type of multiplexing used for a resource element (RE). For example, if the code division multiplexing type is CDM8, then for 32 CSI-RS ports, the multiplexing type of this CSI-RS resource in the time and frequency domains can be FD2 or TD4, meaning one RE is multiplexed 4 times in the time domain and 2 times in the frequency domain. Density indicates the number of REs on a PRB used for transmission on one CSI-RS port. For example, a density of 1 means that each PRB has 1 RE used for transmission on one CSI-RS port; a density of 0.2 means that every two PRBs have 1 RE used for transmission on one CSI-RS port.

[0098] S202, multiple CSI-RS resources are sent to the terminal UE in terms of time and frequency resources.

[0099] After receiving CSI-RS resources from the base station, the UE can measure the downlink channel quality of the signals transmitted from the base station to the UE and feed the measurement results back to the base station. This allows the base station to perform beam optimization based on the measurement results, thereby improving the downlink channel quality. The measurement results may include the measured downlink channel quality indicator (CQI), rank indicator (RI), and precoding matrix indicator (PMI).

[0100] In this embodiment, the base station can transmit multiple CSI-RS resources mapped to the time-frequency resources to the UE via the downlink through the time-frequency resources.

[0101] In the aforementioned information transmission method, the base station, by determining the time-frequency resources corresponding to multiple CSI-RS resources, can transmit multiple CSI-RS resources to the UE on time-frequency resources including at least one Physical Resource Block (PRB) resource and at least one time slot resource. Since the total number of CSI-RS ports corresponding to the multiple CSI-RS resources in this information transmission method is greater than the port number threshold, the UE can simultaneously measure the total number of CSI-RS interfaces that is greater than the port number threshold based on the received multiple CSI-RS resources. This makes the information transmission method applicable to the CSI measurement process in large-scale MIMO scenarios. In addition, since the time-frequency resources include at least one Physical Resource Block (PRB) resource and at least one time slot resource, the problem of the base station being unable to transmit multiple CSI-RS resources to the UE due to insufficient time-frequency resources can be avoided, ensuring the reliability of the base station transmitting multiple CSI-RS resources to the UE.

[0102] It is understandable that when a base station transmits multiple CSI-RS resources on time-frequency resources, it also needs to indicate the starting position of each CSI-RS resource for the UE on the time-frequency resources. In one embodiment, such as Figure 7 As shown, the above S202 may include:

[0103] S301, determine the time-domain start position and frequency-domain start position of each CSI-RS resource on the time-frequency resource.

[0104] The time-domain start position refers to a time slot occupied by each CSI-RS resource and the position of the start symbol in that time slot. The frequency-domain start position refers to a PRB occupied by each CSI-RS resource and the position of the start subcarrier in that PRB.

[0105] In this embodiment, the base station can first determine the idle time-frequency resources, and then determine the mapping position of each CSI-RS resource on the time-frequency resources according to the size of the idle time-frequency resources, thereby determining the time domain start position and frequency domain start position of each CSI-RS resource.

[0106] S302, based on the start position of each time domain and the start position of each frequency domain, sends multiple CSI-RS resources to the UE on time and frequency resources.

[0107] In this embodiment, the base station can map each CSI-RS resource to time-frequency resources according to the determined start positions in the time domain and the frequency domain, and then use the mapped time-frequency resources to send each CSI-RS resource to the UE.

[0108] In this embodiment, the base station determines the time-domain start position and frequency-domain start position of each CSI-RS resource on the time-frequency resource, and then sends multiple CSI-RS resources to the UE on the time-frequency resource according to each time-domain start position and each frequency-domain start position. This enables the UE to accurately determine the position of each CSI-RS resource on the time-frequency resource according to the time-domain start position and frequency-domain start position when receiving the CSI-RS resource, thereby obtaining accurate CSI-RS resources.

[0109] In the scenario where the base station transmits multiple CSI-RS resources to the UE based on each time-domain start position and each frequency-domain start position, the base station can send signaling to the UE to instruct the UE to obtain the corresponding position of each CSI-RS resource in the time-frequency resources. In one embodiment, the method further includes sending a first signaling to the UE, the first signaling being used at least to indicate the time-domain start position and the frequency-domain start position corresponding to each CSI-RS resource.

[0110] The first signaling can be RCC signaling, which may carry configuration information of the base station regarding CSI-RS resources, used to instruct the UE to determine the occupied position of each CSI-RS resource in the time-frequency resources. The first signaling may include signaling for indicating the start position in the time domain and signaling for indicating the start position in the frequency domain.

[0111] Optionally, the first signaling includes a first field corresponding to each CSI-RS resource and a second field corresponding to each CSI-RS resource. The first field is used to indicate the start position of the time domain corresponding to the CSI-RS resource, and the second field is used to indicate the start position of the frequency domain corresponding to the CSI-RS resource.

[0112] The first field in the first signaling may include startingSlot and ID, where ID represents each CSI-RS resource, and startingSlot = {0, ..., nt-1}, indicating that the time slot position of the CSI-RS resource is the nt-th time slot after the current time slot. The first field may also include a "first OFDM Symbol In Time Domain" field, indicating the position of the starting symbol of each CSI-RS resource in the nt-th time slot. For example, if the current time slot is time slot 2, startingSlot = 3, and ID = 2, then the first signaling indicates that the time domain starting position of the second CSI-RS resource is time slot 4.

[0113] The second field in the first signaling can be startingRB, offsetRB, and ID. ID represents each CSI-RS resource, and offsetRB = {0, 1, 2, 3} represents the offset of the PRB position occupied by the CSI-RS resource relative to the first PRB position. Alternatively, the first signaling can also include startingRB = {0, ..., maxNrofPhysicalResourceBlocks-1}, indicating that the value of startingRB can be any integer greater than 0 and less than the maximum number of physical resource blocks minus 1. For example, if startingRB = 1, offsetRB = 2, and ID = 3, then the first signaling indicates that the frequency domain starting position of the third CSI-RS resource is the third PRB.

[0114] In this embodiment, after configuring the first signaling, the base station can simultaneously send the first signaling and multiple CSI-RS resources to the UE through time-frequency resources, so that the UE can determine the position of each CSI-RS resource in the time-frequency resources according to the first signaling.

[0115] In this embodiment, the base station sends a first signaling message to the UE to indicate the time-domain start position and frequency-domain start position corresponding to each CSI-RS resource, so that the UE can accurately determine the position of each CSI-RS resource on the time-frequency resources according to the first signaling message, thereby ensuring the accuracy of each CSI-RS resource obtained by the UE.

[0116] In the scenario described above, where multiple CSI-RS resources are identified and corresponding time-frequency resources are used to transmit these resources to the terminal UE, the base station needs to determine the number of CSI-RS ports mapped to each CSI-RS resource based on the number of CSI-RS ports to be measured. In one embodiment, such as... Figure 8 As shown, prior to S201, the method further includes:

[0117] S401, determine the number of CSI-RS ports corresponding to each CSI-RS resource based on the number of idle resource units (REs).

[0118] Understandably, when the total number of CSI-RS ports exceeds a port count threshold, the base station can aggregate multiple CSI-RS resources and send them to the UE for downlink measurement. Therefore, the number of CSI-RS resources to be aggregated can be determined based on the number of CSI-RS ports to be measured. In determining the number of CSI-RS resources to be aggregated, since multiple CSI-RS resources need to be mapped to time-frequency resources simultaneously, to avoid the problem of idle REs being unable to accommodate multiple CSI-RS resources due to an excessive number of CSI-RS resources, each CSI-RS resource can be mapped to multiple ports.

[0119] In this embodiment, the base station can determine the number of CSI-RS ports corresponding to each CSI-RS resource based on the number of idle REs. Optionally, if the number of idle REs is large, the number of CSI-RS ports corresponding to each CSI-RS resource will also be large; if the number of idle REs is small, the number of CSI-RS ports corresponding to each CSI-RS resource will also be small. For example, if the number of idle REs is 168, the number of CSI-RS ports corresponding to each CSI-RS resource can be 32; if the number of idle REs is 84, the number of CSI-RS ports corresponding to each CSI-RS resource can be 16.

[0120] S402, determine the resource quantity of multiple CSI-RS resources based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each CSI-RS resource.

[0121] The number of CSI-RS ports to be measured is determined by the configuration information of the wireless network corresponding to the base station. In this embodiment, the number of CSI-RS ports to be measured can be 48, 64, 128, etc.

[0122] It should be noted that the base station needs to determine the number of CSI-RS resources to be transmitted in advance based on the number of CSI-RS ports to be measured. Therefore, in this embodiment, the base station can determine the resource quantity of multiple CSI-RS resources based on the ratio between the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each CSI-RS resource.

[0123] For example, if the number of CSI-RS ports to be measured is 48, and the number of CSI-RS ports corresponding to each CSI-RS resource is 24, then the total number of resources for multiple CSI-RS resources can be determined to be 2; or, if the number of CSI-RS ports to be measured is 48, and the number of CSI-RS ports corresponding to each CSI-RS resource is 164, then the total number of resources for multiple CSI-RS resources can be determined to be 3. This embodiment does not limit the correspondence between the number of CSI-RS ports to be measured and the total number of resources for multiple CSI-RS resources. For example, the correspondence between different numbers of CSI-RS ports to be measured and the total number of resources for multiple CSI-RS resources can be shown in the following table.

[0124] In this embodiment, the base station can determine the number of CSI-RS ports corresponding to each CSI-RS resource based on the number of idle resource units (REs). Thus, it can determine the resource quantity of multiple CSI-RS resources based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each CSI-RS resource. Since the number of CSI-RS ports corresponding to each CSI-RS resource is determined based on the number of idle REs, it can avoid the situation where the number of idle REs cannot accommodate the number of CSI-RS ports corresponding to a CSI-RS resource, which would prevent multiple ports belonging to the same CSI-RS resource from being unable to be mapped to a resource block composed of a time slot and a PRB, thereby affecting the accuracy of the CSI-RS resources received by the UE.

[0125]

[0126] To facilitate understanding by those skilled in the art, the above information transmission method will be described in detail below. This method may include:

[0127] S1, the base station determines the number of CSI-RS ports corresponding to each CSI-RS resource based on the number of idle REs.

[0128] S2, the base station determines the resource quantity of multiple CSI-RS resources based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each CSI-RS resource.

[0129] S3, the base station determines the time-frequency resources corresponding to multiple Channel State Information Reference Signals (CSI-RS) resources. The time-frequency resources include multiple consecutive PRB resources and multiple consecutive time slot resources, or the time-frequency resources include multiple consecutive PRB resources and one time slot resource, or the time-frequency resources include one PRB resource and multiple consecutive time slot resources, or the time-frequency resources include one PRB resource and one time slot resource.

[0130] S4, the base station determines the time-domain start position and frequency-domain start position of each CSI-RS resource on the time-frequency resources.

[0131] S5, the base station sends multiple CSI-RS resources to the UE on time and frequency resources according to the start position of each time domain and the start position of each frequency domain.

[0132] S6, the base station sends a first signaling to the UE. The first signaling is used to indicate at least the time domain start position and the frequency domain start position corresponding to each CSI-RS resource.

[0133] It should be noted that the descriptions in S1-S6 above can be found in the relevant descriptions in the above embodiments, and their effects are similar, so they will not be repeated here.

[0134] In one embodiment, such as Figure 9 As shown, an information transmission method is provided, which is applied to... Figure 1 Taking UE200 as an example, the explanation includes the following steps:

[0135] S501, on time-frequency resources corresponding to multiple CSI-RS resources, receive multiple CSI-RS resources sent by the base station, the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource.

[0136] CSI-RS is used to instruct the user equipment (UE) to measure the radio channel quality and feed the measurement results back to the base station, so that the base station can perform operations such as beamforming based on the measurement results. The UE can receive multiple CSI-RS resources on the time-frequency resources transmitted by the base station.

[0137] It should be noted that when the base station sends CSI-RS resources to the UE, it needs to map the CSI-RS resources to time-frequency resources and then send the CSI-RS resources to the UE through the time-frequency resources. When the total number of CSI-RS ports corresponding to multiple CSI-RS resources exceeds the port number threshold, if the time-frequency resources include one PRB resource and one time slot resource, there may be a problem that the time-frequency resources cannot accommodate multiple CSI-RS resources. Therefore, the time-frequency resources occupied by multiple CSI-RS resources sent by the base station include at least one PRB resource and at least one time slot resource.

[0138] The port number threshold can be the maximum number of CSI-RS ports supported by existing NR protocols, such as 32 CSI-RS ports. In this embodiment, the UE can simultaneously measure CSI-RS ports with a number greater than the port number threshold based on the received multiple CSI-RS resources.

[0139] In this embodiment, the UE can receive multiple CSI-RS resources sent by the base station on time-frequency resources, including at least one PRB resource and at least one time slot resource, where the total number of CSI-RS ports is greater than a port number threshold.

[0140] S502 measures multiple CSI-RS resources to obtain measurement results and feeds the measurement results back to the base station.

[0141] The measurement results refer to the channel quality information obtained by the UE from measuring the downlink based on multiple CSI-RS resources received. For example, the measurement results may include the Channel Quality Indicator (CQI), Rank Indication (RI), and Precoding Matrix Indicator (PMI) for measuring the downlink.

[0142] In this embodiment, the UE can perform channel quality measurements on multiple received CSI-RS resources and send the measurement results to the base station through the uplink corresponding to the downlink that receives the multiple CSI-RS resources, so as to feed back the measurement results to the base station.

[0143] In the above information transmission method, the UE receives multiple CSI-RS resources sent by the base station on time-frequency resources including at least one PRB resource and at least one time slot resource. It can measure multiple CSI-RS resources to obtain measurement results and feed back the measurement results to the base station. Since the total number of CSI-RS ports corresponding to multiple CSI-RS resources is greater than the port number threshold, the UE can simultaneously measure the total number of CSI-RS end interfaces that is greater than the port number threshold based on the received multiple CSI-RS resources. This makes the information transmission method applicable to the CSI measurement process in large-scale MIMO scenarios.

[0144] In the scenario described above, where the UE receives multiple CSI-RS resources sent by the base station on time-frequency resources corresponding to multiple CSI-RS resources, the UE can also receive a first signaling sent by the base station and determine the position of each CSI-RS resource on the time-frequency resources according to the first signaling. In one embodiment, such as Figure 10 As shown, the above method also includes:

[0145] S601, receive the first signaling sent by the base station.

[0146] The first signaling refers to the fact that the first signaling can be RCC signaling, which can carry the base station's configuration information about CSI-RS resources, and is used to instruct the UE to determine the occupied position of each CSI-RS resource in the time and frequency resources.

[0147] In this embodiment, the UE can receive the first signaling sent by the base station from the time-frequency resources sent by the base station while receiving multiple CSI-RS resources sent by the base station.

[0148] S602, according to the time domain start position and frequency domain start position corresponding to each CSI-RS resource indicated by the first signaling, receive multiple CSI-RS resources on the time and frequency resources.

[0149] The first signaling may include signaling for indicating the start position in the time domain and signaling for indicating the start position in the frequency domain. In this embodiment, the UE can parse the received first signaling, determine the start position in the time domain and the start position in the frequency domain corresponding to each CSI-RS resource based on the parsing result, and thus receive multiple CSI-RS resources from the time-frequency resources according to the start positions in the time domain and the frequency domain.

[0150] In this embodiment, the UE can receive multiple CSI-RS resources accurately on time and frequency resources according to the time-domain start position and frequency-domain start position corresponding to each CSI-RS resource indicated by the first signaling sent by the base station, thereby ensuring the accuracy of each CSI-RS resource obtained by the UE.

[0151] The following describes in detail the specific process by which the UE receives multiple CSI-RS resources on time-frequency resources according to the time-domain start position and frequency-domain start position corresponding to each CSI-RS resource indicated by the first signaling. In one embodiment, the method further includes: for each CSI-RS resource, determining the time-domain start position corresponding to the CSI-RS resource based on the first field corresponding to the CSI-RS resource in the first signaling, and determining the frequency-domain start position corresponding to the CSI-RS resource based on the second field corresponding to the CSI-RS resource in the first signaling.

[0152] The first field and the second field are fields in the first signaling used to represent the time-domain start position and frequency-domain start position of multiple CSI-RS resources. In this embodiment, the first field can be used to represent the time-domain start position, and the second field can be used to represent the frequency-domain start position. The first field may include the startingSlot field, ID, and first OFDM SymbolIn Time Domain field; the second field may include the startingRB field, offsetRB field, and ID.

[0153] In this embodiment, taking a CSI-RS resource as an example, the process of the UE determining the time-domain start position and frequency-domain start position of the CSI-RS resource on the time-frequency resource is described in detail:

[0154] First, the UE can determine the CSI-RS resource corresponding to the ID in the startingSlot field of the first field in the first signaling. Then, based on the value of the startingSlot, the UE can determine the time slot position of the CSI-RS resource in the time domain. Based on the value of "first OFDM Symbol In Time Domain", the UE can determine the starting symbol of the CSI-RS resource in the time slot, thereby determining the starting position of the time domain corresponding to the CSI-RS resource.

[0155] Then, the UE can determine the position of the initial PRB occupied by the CSI-RS resource based on the startingRB in the second field of the first signaling, and then determine the offset position of the CSI-RS resource corresponding to the ID in the frequency domain resource based on the value of offsetRB and the value of ID, thereby determining the frequency domain start position corresponding to the CSI-RS resource based on startingRB+offsetRB.

[0156] As one possible implementation, the first field can be used to represent the start position in the frequency domain, and the second resource can be used to represent the start position in the time domain.

[0157] In this embodiment, for each CSI-RS resource, the UE determines the time domain start position corresponding to the CSI-RS resource based on the first field corresponding to the CSI-RS resource in the first signaling, and determines the frequency domain start position corresponding to the CSI-RS resource based on the second field corresponding to the CSI-RS resource in the first signaling, thereby accurately determining the time domain start position and frequency domain start position corresponding to each CSI-RS resource, and thus enabling the UE to accurately receive multiple CSI-RS resources from the time and frequency resources.

[0158] To facilitate understanding by those skilled in the art, the above information transmission method will be described in detail below. This method may include:

[0159] S1, the UE receives the first signaling sent by the base station.

[0160] S2, the UE receives multiple CSI-RS resources on the time and frequency resources according to the time domain start position and frequency domain start position corresponding to each CSI-RS resource indicated by the first signaling.

[0161] S3. For each CSI-RS resource, determine the time domain start position corresponding to the CSI-RS resource according to the first field corresponding to the CSI-RS resource in the first signaling, and determine the frequency domain start position corresponding to the CSI-RS resource according to the second field corresponding to the CSI-RS resource in the first signaling.

[0162] It should be noted that the descriptions in S1-S3 above can be found in the relevant descriptions in the above embodiments, and their effects are similar, so they will not be repeated here.

[0163] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0164] In one embodiment, such as Figure 11 As shown, an information transmission device for a base station is provided, comprising: a first determining module 11 and a first transmitting module 12, wherein:

[0165] The first determining module 11 is used to determine the time-frequency resources corresponding to multiple CSI-RS resources. The total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold. The time-frequency resources include at least one PRB resource and at least one time slot resource.

[0166] The first transmitting module 12 is used to transmit multiple CSI-RS resources to the UE on time-frequency resources.

[0167] Optionally, multiple CSI-RS resources belong to the same CSI-RS resource set, each CSI-RS resource has the same number of CSI-RS ports, the same density, and the same code division multiplexing type.

[0168] Optionally, when the time-frequency resources include multiple consecutive PRB resources and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources may be continuous or discontinuous.

[0169] Optionally, when the time-frequency resources include multiple consecutive PRB resources and one time slot resource, the subcarriers occupied by each CSI-RS resource on multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on one time slot resource may be continuous or discontinuous.

[0170] Optionally, when the time-frequency resources include one PRB resource and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on one PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources may be continuous or discontinuous.

[0171] Optionally, when the time-frequency resource includes a PRB resource and a time slot resource, the subcarriers occupied by each CSI-RS resource on a PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on a time slot resource may be continuous or discontinuous.

[0172] The information transmission device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0173] In one embodiment, such as Figure 12 As shown, the first transmitting module 12 includes: a determining unit 121 and a transmitting unit 122, wherein:

[0174] Determining unit 121 is used to determine the time-domain start position and frequency-domain start position of each CSI-RS resource on the time-frequency resource;

[0175] The transmitting unit 122 is used to transmit multiple CSI-RS resources to the UE on time-frequency resources according to each time-domain start position and each frequency-domain start position.

[0176] The information transmission device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0177] In one embodiment, please refer to... Figure 12 The aforementioned device further includes: a second transmitting module 13, wherein:

[0178] The second transmitting module 13 is used to send a first signaling to the UE. The first signaling is used to indicate at least the time domain start position and the frequency domain start position corresponding to each CSI-RS resource.

[0179] Optionally, the first signaling includes a first field corresponding to each CSI-RS resource and a second field corresponding to each CSI-RS resource. The first field is used to indicate the start position of the time domain corresponding to the CSI-RS resource, and the second field is used to indicate the start position of the frequency domain corresponding to the CSI-RS resource.

[0180] The information transmission device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0181] In one embodiment, please refer to... Figure 12The aforementioned device further includes: a second determining module 14 and a third determining module 15, wherein:

[0182] The second determining module 14 is used to determine the number of CSI-RS ports corresponding to each CSI-RS resource based on the number of idle REs;

[0183] The third determining module 15 is used to determine the resource quantity of multiple CSI-RS resources based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each CSI-RS resource.

[0184] The information transmission device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0185] In one embodiment, such as Figure 13 As shown, an information transmission device is provided for a UE, comprising: a first receiving module 16 and a third transmitting module 17, wherein:

[0186] The first receiving module 16 is used to receive multiple CSI-RS resources sent by the base station on time-frequency resources corresponding to multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the number of ports threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource.

[0187] The third transmitting module 17 is used to measure multiple CSI-RS resources to obtain measurement results and to feed back the measurement results to the base station.

[0188] The information transmission device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0189] In one embodiment, such as Figure 14 As shown, the above-mentioned device further includes: a second receiving module 18, wherein:

[0190] The second receiving module 18 is used to receive the first signaling sent by the base station;

[0191] The first receiving module 16 includes: a receiving unit 161, wherein:

[0192] The receiving unit 161 is used to receive multiple CSI-RS resources on time-frequency resources according to the time-domain start position and frequency-domain start position corresponding to each CSI-RS resource indicated by the first signaling.

[0193] The information transmission device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0194] In one embodiment, please refer to... Figure 14 The aforementioned device further includes: a fourth determining module 19, wherein:

[0195] The fourth determining module 19 is used to determine the time domain start position of each CSI-RS resource based on the first field corresponding to the CSI-RS resource in the first signaling, and to determine the frequency domain start position of the CSI-RS resource based on the second field corresponding to the CSI-RS resource in the first signaling.

[0196] The information transmission device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0197] Specific limitations regarding the information transmission device can be found in the limitations regarding the information transmission method described above, and will not be repeated here. Each module in the aforementioned information transmission device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the processor in the computer device, or stored in software in the memory of the computer device, so that the processor can call and execute the operations corresponding to each module.

[0198] Figure 15 This is a schematic diagram of the base station structure provided in an embodiment of the present invention. Figure 15 The illustrated 1500 includes at least one processor 1501, a memory 1502, and at least one network interface 1504. The various components in the access network device 1500 are coupled together via a bus system 1505. It is understood that the bus system 1505 is used to implement communication between these components. In addition to a data bus, the bus system 1505 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in… Figure 15 Various buses are designated as bus system 1505. Additionally, this embodiment of the invention includes a transceiver 1506, which may consist of multiple components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.

[0199] It is understood that the memory 1502 in this embodiment of the invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1502 of the systems and methods described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0200] In some implementations, memory 1502 stores elements such as executable modules or data structures, or subsets thereof, or extended sets thereof: operating system 15021. Operating system 15021 includes various system programs, such as a framework layer, core library layer, driver layer, etc., used to implement various basic business functions and handle hardware-based tasks.

[0201] In this embodiment of the invention, by calling the program or instructions stored in the memory 1502, the processor is configured to determine the time-frequency resources corresponding to multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource; the transmitter is configured to transmit the multiple CSI-RS resources to the UE on the time-frequency resources.

[0202] Optionally, multiple CSI-RS resources belong to the same CSI-RS resource set, each CSI-RS resource has the same number of CSI-RS ports, the same density, and the same code division multiplexing type.

[0203] Optionally, when the time-frequency resources include multiple consecutive PRB resources and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources may be continuous or discontinuous.

[0204] Optionally, when the time-frequency resources include multiple consecutive PRB resources and one time slot resource, the subcarriers occupied by each CSI-RS resource on multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on one time slot resource may be continuous or discontinuous.

[0205] Optionally, when the time-frequency resources include one PRB resource and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on one PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources may be continuous or discontinuous.

[0206] Optionally, when the time-frequency resource includes a PRB resource and a time slot resource, the subcarriers occupied by each CSI-RS resource on a PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on a time slot resource may be continuous or discontinuous.

[0207] The methods disclosed in the above embodiments of the present invention, in part or in all of them, can also be applied to processor 1501, implemented by processor 1501, or implemented by processor 1501 in conjunction with other components (e.g., a transceiver). Processor 1501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above methods can be completed by the integrated logic circuit of the hardware in processor 1501 or by instructions in the form of software. The processor 1501 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present invention can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can reside in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 1502. Processor 1501 reads the information in memory 1502 and, in conjunction with its hardware, completes the steps of the above method.

[0208] It is understood that the embodiments described in these embodiments of the present invention can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions of this application, or combinations thereof.

[0209] For software implementation, the techniques of the embodiments of the present invention can be implemented through modules (e.g., procedures, functions, etc.) that perform the functions of the embodiments of the present invention. The software code can be stored in memory and executed by processor 1501. The memory can be implemented in processor 1501 or external to processor 1501.

[0210] In one embodiment, the processor is specifically configured to determine the time-domain start position and the frequency-domain start position of each CSI-RS resource on the time-frequency resource; the transmitter is specifically configured to transmit multiple CSI-RS resources to the UE on the time-frequency resource according to each time-domain start position and each frequency-domain start position.

[0211] In one embodiment, the transmitter is specifically used to send a first signaling to the UE, the first signaling being used to indicate at least the time-domain start position and the frequency-domain start position corresponding to each CSI-RS resource.

[0212] Optionally, the first signaling includes a first field corresponding to each CSI-RS resource and a second field corresponding to each CSI-RS resource. The first field is used to indicate the start position of the time domain corresponding to the CSI-RS resource, and the second field is used to indicate the start position of the frequency domain corresponding to the CSI-RS resource.

[0213] In one embodiment, the processor is specifically configured to determine the number of CSI-RS ports corresponding to each CSI-RS resource based on the number of idle REs; the processor is also specifically configured to determine the resource quantity of multiple CSI-RS resources based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each CSI-RS resource.

[0214] In one embodiment, a communication device is provided, see [link to previous document]. Figure 16 . Figure 16 This is a schematic diagram of the structure of the UE provided in an embodiment of the present invention. Figure 16 The terminal device 1600 shown includes at least one processor 1601, a memory 1602, at least one network interface 1604, and a user interface 1603. The various components in the terminal device 1600 are coupled together via a bus system 1605. It is understood that the bus system 1605 is used to implement communication between these components. In addition to a data bus, the bus system 1605 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in… Figure 16 Various buses are designated as bus system 1605. Additionally, this embodiment of the invention includes a transceiver 1606, which may consist of multiple components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.

[0215] The user interface 1603 may include a display, keyboard, or clicking device (e.g., mouse, trackball, touchpad, or touchscreen).

[0216] It is understood that the memory 1602 in this embodiment of the invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1602 of the systems and methods described in this embodiment is intended to include, but is not limited to, these and any other suitable types of memory.

[0217] In some implementations, memory 1602 stores elements, executable modules or data structures, or subsets thereof, or extended sets thereof: operating system 16021 and application program 16022.

[0218] The operating system 16021 includes various system programs, such as the framework layer, core library layer, and driver layer, used to implement various basic business functions and handle hardware-based tasks. The application program 16022 includes various applications, such as a media player and a browser, used to implement various application functions. The program implementing the method of this embodiment can be included in the application program 16022.

[0219] In this embodiment of the invention, by calling the program or instructions stored in the memory 1602, specifically the program or instructions stored in the application program 16022, the receiver is used to receive multiple CSI-RS resources sent by the base station on the time-frequency resources corresponding to multiple CSI-RS resources. The total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold. The time-frequency resources include at least one PRB resource and at least one time slot resource. The transmitter is used to measure the multiple CSI-RS resources to obtain the measurement results and feed back the measurement results to the base station.

[0220] The methods disclosed in the above embodiments of the present invention, in part or in all of them, can also be applied to processor 1601, implemented by processor 1601, or implemented by processor 1601 in conjunction with other components (e.g., transceivers). Processor 1601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above methods can be completed by the integrated logic circuit of the hardware in processor 1601 or by instructions in the form of software. The processor 1601 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present invention can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can reside in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 1602. Processor 1601 reads the information in memory 1602 and, in conjunction with its hardware, completes the steps of the above method.

[0221] It is understood that the embodiments described in these embodiments of the present invention can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions of this application, or combinations thereof.

[0222] For software implementation, the techniques of the embodiments of the present invention can be implemented through modules (e.g., procedures, functions, etc.) that perform the functions of the embodiments of the present invention. The software code can be stored in memory and executed by processor 1601. The memory can be implemented in processor 1601 or external to processor 1601.

[0223] In one embodiment, the receiver is specifically configured to receive a first signaling sent by the base station; the receiver is also specifically configured to receive multiple CSI-RS resources on the time-frequency resources according to the time-domain start position and frequency-domain start position corresponding to each CSI-RS resource indicated by the first signaling.

[0224] In one embodiment, the processor is further configured to, for each CSI-RS resource, determine the time domain start position corresponding to the CSI-RS resource based on the first field corresponding to the CSI-RS resource in the first signaling, and determine the frequency domain start position corresponding to the CSI-RS resource based on the second field corresponding to the CSI-RS resource in the first signaling.

[0225] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0226] Determine the time-frequency resources corresponding to multiple Channel State Information Reference Signal (CSI-RS) resources. The total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold. The time-frequency resources include at least one Physical Resource Block (PRB) resource and at least one time slot resource.

[0227] Multiple CSI-RS resources are sent to the terminal UE on time and frequency resources.

[0228] Optionally, multiple CSI-RS resources belong to the same CSI-RS resource set, each CSI-RS resource has the same number of CSI-RS ports, the same density, and the same code division multiplexing type.

[0229] Optionally, when the time-frequency resources include multiple consecutive PRB resources and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources may be continuous or discontinuous.

[0230] Optionally, when the time-frequency resources include multiple consecutive PRB resources and one time slot resource, the subcarriers occupied by each CSI-RS resource on multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on one time slot resource may be continuous or discontinuous.

[0231] Optionally, when the time-frequency resources include one PRB resource and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on one PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources may be continuous or discontinuous.

[0232] Optionally, when the time-frequency resource includes a PRB resource and a time slot resource, the subcarriers occupied by each CSI-RS resource on a PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on a time slot resource may be continuous or discontinuous.

[0233] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0234] Determine the time-domain start position and frequency-domain start position of each CSI-RS resource on the time-frequency resources;

[0235] Based on the start positions of each time domain and each frequency domain, multiple CSI-RS resources are sent to the UE on time and frequency resources.

[0236] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0237] Send a first signaling message to the UE. The first signaling message is used to indicate at least the time domain start position and the frequency domain start position corresponding to each CSI-RS resource.

[0238] Optionally, the first signaling includes a first field corresponding to each CSI-RS resource and a second field corresponding to each CSI-RS resource. The first field is used to indicate the start position of the time domain corresponding to the CSI-RS resource, and the second field is used to indicate the start position of the frequency domain corresponding to the CSI-RS resource.

[0239] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0240] Based on the number of idle REs, determine the number of CSI-RS ports corresponding to each CSI-RS resource;

[0241] The resource quantity of multiple CSI-RS resources is determined based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each CSI-RS resource.

[0242] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0243] On the time-frequency resources corresponding to multiple CSI-RS resources, the base station sends multiple CSI-RS resources, the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource;

[0244] The measurement results are obtained by measuring multiple CSI-RS resources and then fed back to the base station.

[0245] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0246] Receive the first signaling sent by the base station;

[0247] On the time-frequency resources corresponding to multiple CSI-RS resources, the multiple CSI-RS resources transmitted by the base station are received, including:

[0248] According to the time-domain start position and frequency-domain start position corresponding to each CSI-RS resource indicated by the first signaling, multiple CSI-RS resources are received on the time-frequency resources.

[0249] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0250] For each CSI-RS resource, the time domain start position corresponding to the CSI-RS resource is determined according to the first field corresponding to the CSI-RS resource in the first signaling, and the frequency domain start position corresponding to the CSI-RS resource is determined according to the second field corresponding to the CSI-RS resource in the first signaling.

[0251] This application also provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the following steps:

[0252] Determine the time-frequency resources corresponding to multiple Channel State Information Reference Signal (CSI-RS) resources. The total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold. The time-frequency resources include at least one Physical Resource Block (PRB) resource and at least one time slot resource.

[0253] Multiple CSI-RS resources are sent to the terminal UE on time and frequency resources.

[0254] Optionally, multiple CSI-RS resources belong to the same CSI-RS resource set, each CSI-RS resource has the same number of CSI-RS ports, the same density, and the same code division multiplexing type.

[0255] Optionally, when the time-frequency resources include multiple consecutive PRB resources and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources may be continuous or discontinuous.

[0256] Optionally, when the time-frequency resources include multiple consecutive PRB resources and one time slot resource, the subcarriers occupied by each CSI-RS resource on multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on one time slot resource may be continuous or discontinuous.

[0257] Optionally, when the time-frequency resources include one PRB resource and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on one PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on multiple time slot resources may be continuous or discontinuous.

[0258] Optionally, when the time-frequency resource includes a PRB resource and a time slot resource, the subcarriers occupied by each CSI-RS resource on a PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on a time slot resource may be continuous or discontinuous.

[0259] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0260] Determine the time-domain start position and frequency-domain start position of each CSI-RS resource on the time-frequency resources;

[0261] Based on the start positions of each time domain and each frequency domain, multiple CSI-RS resources are sent to the UE on time and frequency resources.

[0262] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0263] Send a first signaling message to the UE. The first signaling message is used to indicate at least the time domain start position and the frequency domain start position corresponding to each CSI-RS resource.

[0264] Optionally, the first signaling includes a first field corresponding to each CSI-RS resource and a second field corresponding to each CSI-RS resource. The first field is used to indicate the start position of the time domain corresponding to the CSI-RS resource, and the second field is used to indicate the start position of the frequency domain corresponding to the CSI-RS resource.

[0265] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0266] Based on the number of idle REs, determine the number of CSI-RS ports corresponding to each CSI-RS resource;

[0267] The resource quantity of multiple CSI-RS resources is determined based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each CSI-RS resource.

[0268] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0269] On the time-frequency resources corresponding to multiple CSI-RS resources, the base station sends multiple CSI-RS resources, the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource;

[0270] The measurement results are obtained by measuring multiple CSI-RS resources and then fed back to the base station.

[0271] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0272] Receive the first signaling sent by the base station;

[0273] On the time-frequency resources corresponding to multiple CSI-RS resources, the multiple CSI-RS resources transmitted by the base station are received, including:

[0274] According to the time-domain start position and frequency-domain start position corresponding to each CSI-RS resource indicated by the first signaling, multiple CSI-RS resources are received on the time-frequency resources.

[0275] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0276] For each CSI-RS resource, the time domain start position corresponding to the CSI-RS resource is determined according to the first field corresponding to the CSI-RS resource in the first signaling, and the frequency domain start position corresponding to the CSI-RS resource is determined according to the second field corresponding to the CSI-RS resource in the first signaling.

[0277] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the methods described above. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0278] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0279] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An information transmission method, characterized in that, For use in a base station, the method includes: Determine the time-frequency resources corresponding to multiple Channel State Information Reference Signals (CSI-RS) resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than a port number threshold, and the time-frequency resources include at least one Physical Resource Block (PRB) resource and at least one time slot resource. The multiple CSI-RS resources are transmitted to the terminal UE on the time-frequency resources.

2. The method according to claim 1, characterized in that, The multiple CSI-RS resources belong to the same CSI-RS resource set, and each CSI-RS resource corresponds to the same number of CSI-RS ports, the same density, and the same code division multiplexing type.

3. The method according to claim 1, characterized in that, When the time-frequency resources include multiple consecutive PRB resources and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on the multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on the multiple time slot resources may be continuous or discontinuous.

4. The method according to claim 1, characterized in that, When the time-frequency resource includes multiple consecutive PRB resources and one time slot resource, the subcarriers occupied by each CSI-RS resource on the multiple PRB resources may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on the one time slot resource may be continuous or discontinuous.

5. The method according to claim 1, characterized in that, When the time-frequency resources include one PRB resource and multiple consecutive time slot resources, the subcarriers occupied by each CSI-RS resource on the one PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on the multiple time slot resources may be continuous or discontinuous.

6. The method according to claim 1, characterized in that, When the time-frequency resource includes a PRB resource and a time slot resource, the subcarriers occupied by each CSI-RS resource on the PRB resource may be continuous or discontinuous, and the symbols occupied by each CSI-RS resource on the time slot resource may be continuous or discontinuous.

7. The method according to any one of claims 1-6, characterized in that, The step of sending the plurality of CSI-RS resources to the UE on the time-frequency resources includes: Determine the time-domain start position and frequency-domain start position of each CSI-RS resource on the time-frequency resource; According to each of the time-domain start positions and each of the frequency-domain start positions, the plurality of CSI-RS resources are sent to the UE on the time-frequency resources.

8. The method according to claim 7, characterized in that, The method further includes: Send a first signaling to the UE, the first signaling being used at least to indicate the time domain start position and the frequency domain start position corresponding to each of the CSI-RS resources.

9. The method according to claim 8, characterized in that, The first signaling includes a first field corresponding to each of the CSI-RS resources and a second field corresponding to each of the CSI-RS resources. The first field is used to indicate the start position of the time domain corresponding to the CSI-RS resource, and the second field is used to indicate the start position of the frequency domain corresponding to the CSI-RS resource.

10. The method according to claim 1, characterized in that, Before determining the time-frequency resources corresponding to multiple CSI-RS resources, the method further includes: The number of CSI-RS ports corresponding to each CSI-RS resource is determined based on the number of idle resource units (REs). The resource quantity of the plurality of CSI-RS resources is determined based on the number of CSI-RS ports to be measured and the number of CSI-RS ports corresponding to each of the CSI-RS resources.

11. An information transmission method, characterized in that, For a UE, the method includes: On time-frequency resources corresponding to multiple CSI-RS resources, the base station sends the multiple CSI-RS resources, the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource; The measurement results are obtained by measuring the multiple CSI-RS resources, and the measurement results are fed back to the base station.

12. The method according to claim 11, characterized in that, The method further includes: Receive the first signaling sent by the base station; The step of receiving the multiple CSI-RS resources sent by the base station on the time-frequency resources corresponding to the multiple CSI-RS resources includes: According to the time-domain start position and frequency-domain start position corresponding to each of the CSI-RS resources indicated by the first signaling, the plurality of CSI-RS resources are received on the time-frequency resources.

13. The method according to claim 12, characterized in that, The first signaling includes a first field corresponding to each of the CSI-RS resources and a second field corresponding to each of the CSI-RS resources. The method further includes: For each CSI-RS resource, the time domain start position corresponding to the CSI-RS resource is determined according to the first field corresponding to the CSI-RS resource in the first signaling, and the frequency domain start position corresponding to the CSI-RS resource is determined according to the second field corresponding to the CSI-RS resource in the first signaling.

14. An information transmission device, characterized in that, For a base station, the device includes: The first determining module is willing to determine time-frequency resources corresponding to multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource; The first transmission module is used to transmit the plurality of CSI-RS resources to the UE on the time-frequency resources.

15. An information transmission device, characterized in that, For a UE, the device includes: The first receiving module is configured to receive the multiple CSI-RS resources sent by the base station on the time-frequency resources corresponding to the multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the number of ports threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource. The third transmitting module is used to measure the multiple CSI-RS resources, obtain measurement results, and feed back the measurement results to the base station.

16. A communication device, characterized in that, include: Transmitter and processor; The processor is configured to determine time-frequency resources corresponding to multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than a port number threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource; The transmitter is used to transmit the plurality of CSI-RS resources to the UE on the time-frequency resources.

17. A communication device, characterized in that, include: Receiver and transmitter; The receiver is configured to receive the multiple CSI-RS resources sent by the base station on the time-frequency resources corresponding to the multiple CSI-RS resources, wherein the total number of CSI-RS ports corresponding to the multiple CSI-RS resources is greater than the number of ports threshold, and the time-frequency resources include at least one PRB resource and at least one time slot resource. The transmitter is used to measure the multiple CSI-RS resources, obtain measurement results, and feed back the measurement results to the base station.

18. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 13.

19. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 13.

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