Channel state information reference signal transmission method and device

Abstract

An embodiment of the present invention provides a channel state information reference signal transmission method and device, wherein the method comprises: transmitting configuration information to a terminal, wherein the configuration information comprises the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS; transmitting the CSI-RS to the terminal according to the configuration information, which can solve the problem of increasing system complexity due to the non-fixed number of antenna ports of the channel state information reference signal in the related art, and transmitting the CSI-RS by carrying the configuration information of the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying the CSI-RS, thereby reducing the system complexity.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a method and device for transmitting a channel state information reference signal. Background Art

[0002] Wireless communication has brought convenience to human life and production and improved efficiency. The 5th generation New Radio (5G NR) wireless communication network is designed based on Orthogonal Frequency Division Multiplex (OFDM) technology. The time domain unit structure of wireless communication network transmission using OFDM technology is a certain number of OFDM symbols forming a time slot, and a certain number of time slots forming a radio frame; the frequency domain unit structure of transmission is a certain number of subcarriers forming a resource block (RB). During the transmission process of the wireless communication network, the wireless communication system can formulate a transmission strategy based on the channel state information (CSI). As the performance of the wireless communication system improves, its complexity also increases.

[0003] The Channel State Information Reference Signal (CSI-RS) is transmitted through the antenna port and carried on the Channel State Information Reference Signal resource. The number of antenna ports for the Channel State Information Reference Signal is not a fixed number. In some scenarios, a larger number of antenna ports are required, while in some cases, a smaller number of antenna ports are required. Using one resource block to carry all antenna ports for the Channel State Information Reference Signal and meeting the requirements of the number of antenna ports from small to large increases the complexity of the system. For example, if the number of antenna ports for the Channel State Information Reference Signal is small, the reference signal resource carrying the antenna port will occupy fewer wireless resources; conversely, if the number of antenna ports for the Channel State Information Reference Signal is large, the reference signal resource carrying the antenna port will occupy more wireless resources; and other wireless signals need to be carried on the wireless resources, so the complexity of coordinating the resources occupied by the Channel State Information Reference Signal and other wireless signals increases.

[0004] With regard to the problem in the related art that the number of antenna ports for the channel state information reference signal is not fixed, which increases the system complexity, no solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method and apparatus for transmitting a channel state information reference signal, so as to at least solve the problem in the related art that the number of antenna ports of the channel state information reference signal is not fixed, which increases the system complexity.

[0006] According to an embodiment of the present invention, a channel state information reference signal transmission method is provided, comprising:

[0007] Transmitting configuration information to the terminal, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0008] The CSI-RS is transmitted to the terminal according to the configuration information.

[0009] According to another embodiment of the present invention, a channel state information reference signal transmission method is also provided, including:

[0010] Receive configuration information, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0011] The CSI-RS is received according to the configuration information.

[0012] According to another embodiment of the present invention, there is also provided a channel state information reference signal transmission device, including:

[0013] A first transmission module, configured to transmit configuration information to a terminal, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0014] The second transmission module is used to transmit the CSI-RS to the terminal according to the configuration information.

[0015] According to another embodiment of the present invention, there is also provided a channel state information reference signal transmission device, including:

[0016] A first receiving module is used to receive configuration information, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0017] The second receiving module is used to obtain the CSI-RS according to the configuration information.

[0018] According to yet another embodiment of the present invention, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when run.

[0019] According to yet another embodiment of the present invention, there is provided an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0020] Through the embodiment of the present invention, configuration information is transmitted, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS; the CSI-RS is transmitted to the terminal according to the configuration information, which can solve the problem of increasing system complexity due to the non-fixed number of antenna ports of the channel state information reference signal in the related art. The CSI-RS is transmitted by carrying the configuration information of the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying the CSI-RS, thereby reducing the system complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a hardware structure block diagram of a mobile terminal of a channel state information reference signal transmission method according to an embodiment of the present invention;

[0022] Figure 2 The process of the channel state information reference signal transmission method according to an embodiment of the present invention is as follows Figure 1 ;

[0023] Figure 3 The process of the channel state information reference signal transmission method according to an embodiment of the present invention is as follows Figure 2 ;

[0024] Figure 4 The frame of the channel state information reference signal transmission device according to the embodiment of the present invention is Figure 1 ;

[0025] Figure 5 The frame of the channel state information reference signal transmission device according to the embodiment of the present invention is Figure 2 . DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0028] Example 1

[0029] The method embodiment provided in the first embodiment of the present application can be applied to the base station side or the terminal side in the wireless communication network. It can be executed in the base station or mobile terminal, computer terminal or similar computing device. Taking running on the mobile terminal as an example, Figure 1 is a hardware structure block diagram of a mobile terminal of a channel state information reference signal transmission method according to an embodiment of the present invention, such as Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data. Optionally, the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0030] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the message receiving method in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0031] The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network INterface CoNtroller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0032] Based on the base station or the above mobile terminal, a channel state information reference signal transmission method is provided in this embodiment. Figure 2 A method for transmitting a channel state information reference signal according to an embodiment of the present invention is provided. Figure 1 ,like Figure 2 As shown, the process includes the following steps:

[0033] Step S202, transmitting configuration information to the terminal, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0034] Step S204: Transmit the CSI-RS to the terminal according to the configuration information.

[0035] Through the above steps S202 to S204, the problem of increasing system complexity due to the non-fixed number of antenna ports of the channel state information reference signal in the related art can be solved. The CSI-RS is transmitted by configuring the number of resource blocks included in a class A resource block group consisting of continuous resource blocks carrying all ports of the CSI-RS, thereby reducing the system complexity.

[0036] Among them, a type A resource block group is a resource block combination composed of continuous resource blocks carrying channel state information reference signals, and all ports of the channel state information reference signal appear only once in the resource block combination.

[0037] A resource block combination consisting of consecutive resource blocks carrying a channel state information reference signal, in which all ports appear only once, is recorded as a Class A resource block group; the number of resource blocks included in the Class A resource block group is the number of resource blocks carrying all ports of the channel state information reference signal. The number of resource blocks carrying all ports of the channel state information reference signal is the number of resource blocks used to carry all ports of the channel state information reference signal, that is, the number of resource blocks used to carry all ports of the channel state information reference signal. As an example, the channel state information reference signal is carried on 12 resource blocks, and the channel state information reference signal has a total of 8 ports, wherein every two consecutive resource blocks carrying the channel state information reference signal carry all 8 ports of the channel state information reference signal; that is, the Class A resource block group includes 2 resource blocks. In one case, the resource blocks within a class A resource block group are continuous; as shown in Table 1, a class A resource block group marked as class A resource block group 0 includes 4 resource blocks, namely resource block 0, resource block 1, resource block 2, and resource block 3, and there are no other resource blocks between these 4 resource blocks.

[0038] Table 1

[0039] Resource block 0 in resource block group 0 of type A Resource block 1 in resource block group 0 of type A Resource block 2 in resource block group 0 of type A Resource block 3 in resource block group 0 of type A

[0040] In one case, the resource blocks in a class A resource block group are discontinuous; as shown in Table 2, a class A resource block group marked as class A resource block group 0 includes two resource blocks, namely resource block 0 and resource block 1, and there are other resource blocks between the two resource blocks.

[0041] Table 2

[0042] Resource block 0 in resource block group 0 of type A Resource blocks in non-class A resource block group 0 Resource block 1 in resource block group 0 of type A

[0043] In another case, the class A resource block groups are continuous; as shown in Table 3, there are two class A resource block groups, marked as group 0 and group 1, respectively, and there are no other resource blocks between the two groups.

[0044] Table 3

[0045] Resource block 0 in resource block group 0 of type A Resource block 1 in resource block group 0 of type A Resource block 0 in resource block group 1 of type A Resource block 1 in resource block group 1 of type A

[0046] In another case, the class A resource block groups are discontinuous; as shown in Table 4, there are two class A resource block groups, marked as group 0 and group 1, respectively, and there are resource blocks that are not class A resource block groups between the two groups.

[0047] Table 4

[0048] Resource block 0 in resource block group 0 of type A Resource block 1 in resource block group 0 of type A Resource blocks that are not in a class A resource block group Resource blocks that are not in a class A resource block group Resource block 0 in resource block group 1 of type A Resource block 1 in resource block group 1 of type A

[0049] By indicating the number of resource blocks included in the Class A resource block group in the configuration information, the requirement that the number of ports for transmitting channel state information reference signals can be changed is met, and the requirement for the transmission of other wireless signals to occupy wireless resources is coordinated. The number of antenna ports that a resource block can carry is limited. In one case, the maximum number of ports that a resource block can carry channel state information reference signals is limited, for example, the maximum number of ports in the current NR system is 32; in another case, because it carries other wireless signals, the number of antenna ports that a resource block can carry is limited.

[0050] The configuration information includes the number of resource blocks of all ports carrying channel state information reference signals, which can be indicated explicitly or implicitly. For example, the number of resource blocks included in the A-type resource block group is directly indicated; for example, the number of resource blocks included in the A-type resource block group is indicated to be 2. For example, the number of ports Kp on which the channel state information reference signal is carried by a resource block, and the number of ports N for the channel state information reference signal are indicated; the number of resource blocks included in the A-type resource block group can be obtained by calculating the quotient of Kp divided by N.

[0051] In one embodiment, the configuration information is also used to indicate one of the following states of the Class A resource block group: the resource blocks within the Class A resource block group are continuous; the resource blocks within the Class A resource block group are discontinuous; the Class A resource block groups are continuous; the Class A resource block groups are discontinuous.

[0052] Furthermore, the configuration information also includes density information of the CSI-RS, wherein the density information of the CSI-RS is used to indicate one of the following states of the Class A resource block group: the resource blocks within the Class A resource block group are continuous; the resource blocks within the Class A resource block group are discontinuous; the Class A resource block groups are continuous; the Class A resource block groups are discontinuous.

[0053] For example, the density value of the channel state information reference signal is 1, indicating that the class A resource block group carrying the channel state information reference signal is continuous, or indicating that the resource blocks within the class A resource block group are continuous; the density value of the channel state information reference signal is less than 1, indicating that the class A resource block group is discontinuous, or indicating that the resource blocks within the class A resource block group are discontinuous.

[0054] For another example, the density value of the channel state information reference signal is 1, indicating that the Class A resource block group is continuous and the resource blocks within the Class A resource block group are continuous; the density value of the channel state information reference signal is less than 1, indicating that the Class A resource block group is discontinuous and the resource blocks within the Class A resource block group are continuous.

[0055] The information includes that the density of the channel state information reference signal is the average density value per resource block per port. The information includes that the density of the channel state information reference signal can be expressed as the ratio of the number of resource blocks occupied per port to the number of resource blocks within the frequency range of the transmission channel state information reference signal. For example, the information includes that the density of the channel state information reference signal is 0.5, indicating that the average density value per resource block per port is 0.5.

[0056] Corresponding to a density value of a channel state information reference signal, there may be many ways in which the channel state information reference signal occupies wireless resources. If these ways require the base station or terminal to store or retrieve, it will undoubtedly increase the complexity of the system. The density of the channel state information reference signal corresponds to or indicates the above-mentioned limited state, which is conducive to using wireless resources to transmit the channel state information reference signal and reduces the complexity of the system.

[0057] The resource blocks in the class A resource block group are continuous, which means that there are no other resource blocks between adjacent resource blocks in the class A resource block group. The class A resource block group is continuous, which means that there are no other resource blocks between adjacent class A resource block groups.

[0058] In another embodiment, the A-type resource block groups are equally spaced or have equal position differences within the frequency domain range for transmitting the CSI-RS.

[0059] The class A resource block groups are equally spaced within the frequency domain range of the transmission channel state information reference signal, that is, the intervals between adjacent class A resource block groups in the frequency domain are equal, or the position gaps between adjacent class A resource block groups in the frequency domain are equal.

[0060] For example, the spacing distance between adjacent Class A resource block groups in the frequency domain is 0 resource blocks; for another example, the spacing distance between adjacent Class A resource block groups in the frequency domain is 1 resource block; for another example, the spacing distance between adjacent Class A resource block groups in the frequency domain is 2 resource blocks.

[0061] For another example, the spacing distance between adjacent Class A resource block groups in the frequency domain is 0 Class A resource block group sizes; for another example, the spacing distance between adjacent Class A resource block groups in the frequency domain is 1 Class A resource block group size; for another example, the spacing distance between adjacent Class A resource block groups in the frequency domain is 2 Class A resource block group sizes.

[0062] The channel state information reference signal is transmitted on a class A resource block group, and the class A resource block groups are equally spaced within the frequency domain range for transmitting the channel state information reference signal, so that the adjacent frequency domain positions of each port are equally spaced, the interval distances between the adjacent frequency domain positions of all ports are equal, and the frequency domain positions between the ports are concentrated; this avoids the introduction of channel errors between ports due to excessive differences in frequency domain positions between ports, and reduces the complexity of the system.

[0063] In another embodiment, the configuration information further includes the density of the class A resource block group, wherein the density of the class A resource block group is explicitly indicated or implicitly indicated in the configuration information. Further, the density of the class A resource block group is used to indicate whether the class A resource block group is continuous or discontinuous within the frequency domain range of transmitting the CSI-RS.

[0064] Further, the density of the class A resource block group is indicated in one of the following ways:

[0065] By indicating the number of the type A resource block groups within the frequency domain range for transmitting the CSI-RS;

[0066] By indicating the number of said type A resource block groups averaged into a predetermined number of frequency domain units;

[0067] By indicating the difference between the adjacent type A resource block groups in the frequency domain;

[0068] By indicating the spacing distance between adjacent type A resource block groups in the frequency domain;

[0069] By indicating that every M frequency domain resource blocks have one type A resource block group, where M is a positive integer;

[0070] By indicating that on average there are N type A resource block groups within a frequency domain range of each type A resource block group size, wherein N is a real number.

[0071] The density of the Class A resource block group indicates the density of the Class A resource block group within the frequency domain of the transmitted channel state information reference signal. Indicating the density of the Class A resource block group in the configuration information indicates the importance of the transmitted channel state information reference signal to the channel measurement. A high density of the Class A resource block group indicates that the system has increased the importance of the transmitted channel state information reference signal, and the terminal should increase the frequency of measurement on the frequency to improve performance; a low density of the Class A resource block group indicates that the system has reduced the importance of the transmitted channel state information reference signal, and the terminal should reduce the frequency of measurement on the frequency to reduce the workload. Indicating the density of the Class A resource block group in the configuration information facilitates the terminal to use the density information to receive the transmitted channel state information reference signal and reduce the complexity of blind detection. A method for indicating the density of the Class A resource block group is indicated by indicating the number of Class A resource block groups within the frequency domain of the transmitted channel state information reference signal. Another method for indicating the density of the Class A resource block group is to indicate the number of Class A resource block groups averaged to a certain frequency domain unit. Another method for indicating the density of a class A resource block group is to indicate the difference between adjacent class A resource block groups in the frequency domain.

[0072] Another method of indicating the density of a class A resource block group indicates the spacing distance between adjacent class A resource block groups in the frequency domain. Another method of indicating the density of a class A resource block group indicates one class A resource block group for every M frequency domain resource blocks, where M is a positive integer. Another method of indicating the density of a class A resource block group indicates that on average, within the frequency domain range of each class A resource block group size, there are N class A resource block groups, where N is a real number.

[0073] Furthermore, the density of the Class A resource block groups is indicated by indicating the number of Class A resource block groups within the frequency domain range for transmitting the CSI-RS, wherein, if the density of the Class A resource block groups is greater than or equal to a preset threshold, the Class A resource block groups are continuous within the frequency domain range for transmitting the CSI-RS; if the density of the Class A resource block groups is less than the preset threshold, the Class A resource block groups are non-continuous within the frequency domain range for transmitting the CSI-RS.

[0074] There are many ways to present a Class A resource block group in the frequency domain of the transmission channel state information reference signal, which will increase the complexity of the system. For example, the base station or terminal needs to store these presentation methods and corresponding processing methods, and prepare the processing capabilities of these methods. Dividing the frequency domain of the transmission channel state information reference signal into continuous and non-continuous methods reduces the number of presentation methods of the Class A resource block group in the frequency domain of the transmission channel state information reference signal. Indicating whether the Class A resource block group is continuous in the frequency domain of the transmission channel state information reference signal is conducive to the terminal receiving the transmission channel state information reference signal in the indicated manner, reducing the complexity of the terminal receiving operation. The density of the Class A resource block group indicates whether the Class A resource block group is continuous in the frequency domain of the transmission channel state information reference signal, which can save signaling overhead to indicate whether the Class A resource block group is continuous in the frequency domain of the transmission channel state information reference signal, thereby reducing the complexity of the system. One indication method is that the density of the class A resource block group is greater than or equal to a threshold value (i.e., the above-mentioned preset threshold value), indicating that the class A resource block group is continuous within the frequency domain range of the transmission channel state information reference signal. Another indication method is that the density of the class A resource block group is less than or equal to a threshold value, indicating that the class A resource block group is discontinuous within the frequency domain range of the transmission channel state information reference signal.

[0075] In another embodiment, the CSI-RS port groups correspond one-to-one to the resource blocks in the A-type resource block group.

[0076] The channel state information reference signal is carried on a class A resource block group, and the ports of the channel state information reference signal are divided into X groups, where X is the number of resource blocks included in the class A resource block group, and the port groups correspond one-to-one to the resource blocks in the class A resource block group, that is, one port group is carried by a corresponding resource block in the class A resource block group.

[0077] For example, the number of resource blocks included in the A-type resource block group is 2, and the ports of the channel state information reference signal are divided into 2 groups, the first group of ports are carried on one resource block in the A-type resource block group, and the second group of ports are carried on another resource block in the A-type resource block group. For another example, the number of resource blocks included in the A-type resource block group is 3, and the ports of the channel state information reference signal are divided into 3 groups, the first group of ports are carried on one resource block in the A-type resource block group, the second group of ports are carried on another resource block in the A-type resource block group, and the third group of ports are carried on another resource block in the A-type resource block group.

[0078] According to the resource blocks in the class A resource block group, the ports of the channel state information reference signal are grouped, and each group of ports is carried on the corresponding resource block. This is convenient for the transmitting side to transmit the channel state information reference signal on each port according to the resource block, and also convenient for the receiving side to detect the channel state information reference signal on each port according to the resource block, thereby reducing the complexity of the system.

[0079] Further, the correspondence between the port group and the resource blocks in the class A resource block group includes one of the following:

[0080] The port number of the CSI-RS corresponds to the number of the resource block in the class A resource block group;

[0081] The port number of the CSI-RS corresponds to the frequency of the resource block in the class A resource block group, specifically, the port number corresponds to the frequency of the resource block in the class A resource block group;

[0082] The ports having the same remainder obtained by calculating the modulus of the port number of the CSI-RS and the number of resource blocks in the class A resource block group are the same group of ports. Specifically, the ports are divided into X groups, and the ports having the same remainder of the port number are the same group, wherein the remainder is the remainder of the modulus operation of the port number and the number of resource blocks in the class A resource block group, the port number is the dividend, and the number of resource blocks in the class A resource block group is the divisor.

[0083] For example, the order of the port numbers from low to high corresponds to the order of the resource block numbers in the A-type resource block group from low to high; that is, the port group with a low port number corresponds to the resource block with a low number in the A-type resource block group, and the port group with a high port number corresponds to the resource block with a high number in the A-type resource block group. For example, the A-type resource block group includes 2 resource blocks, namely resource block 0 and resource block 1; the ports are divided into two groups, the 0th group of ports includes port 0 and port 1, and the 1st group of ports includes port 2 and port 3; the 0th group of ports corresponds to resource block 0, and the 1st group of ports corresponds to resource block 1.

[0084] For another example, the order of port numbers from low to high corresponds to the order of resource block numbers from high to low in the A-type resource block group; that is, the port group with low port numbers corresponds to the resource blocks with high numbers in the A-type resource block group, and the port group with high port numbers corresponds to the resource blocks with low numbers in the A-type resource block group. For example, the A-type resource block group includes 2 resource blocks, namely resource block 0 and resource block 1; the ports are divided into two groups, the 0th group of ports includes port 0 and port 1, and the 1st group of ports includes port 2 and port 3; the 0th group of ports corresponds to resource block 1, and the 1st group of ports corresponds to resource block 2.

[0085] According to the correspondence between the serial numbers of the ports and the serial numbers of the resource blocks in the A-type resource block group, the correspondence relationship is flexible, thereby reducing the complexity of the correspondence relationship.

[0086] For example, the order of port numbers from low to high corresponds to the order of resource block frequencies in the A-type resource block group from low to high; that is, the port group with low port numbers corresponds to the resource blocks with low frequencies in the A-type resource block group, and the port group with high port numbers corresponds to the resource blocks with high frequencies in the A-type resource block group. For example, the A-type resource block group includes two resource blocks, namely resource block 0 and resource block 1, wherein the frequency domain position of resource block 0 is lower than the frequency domain position of resource block 1; the ports are divided into two groups, the 0th group of ports includes port 0 and port 1, and the 1st group of ports includes port 2 and port 3; the 0th group of ports corresponds to resource block 0, and the 1st group of ports corresponds to resource block 1.

[0087] For another example, the order of port numbers from low to high corresponds to the order of resource block frequencies from high to low within the A-type resource block group; that is, the port group with low port numbers corresponds to the resource blocks with high frequencies within the A-type resource block group, and the port group with high port numbers corresponds to the resource blocks with low frequencies within the A-type resource block group. For example, the A-type resource block group includes two resource blocks, namely resource block 0 and resource block 1; the frequency domain position of resource block 0 is lower than the frequency domain position of resource block 1; the ports are divided into two groups, the 0th group of ports includes port 0 and port 1, and the 1st group of ports includes port 2 and port 3; the 0th group of ports corresponds to resource block 1, and the 1st group of ports corresponds to resource block 2.

[0088] According to the correspondence between the serial number of the port and the frequency position sequence of the resource blocks in the A-type resource block group, the correspondence between the existing resource block frequency position sequence and the port group can be established, thereby reducing the complexity of the system.

[0089] For example, the number of resource blocks in a class A resource block group is 2, and the ports are grouped according to the remainder of the port sequence number divided by 2. A group of ports with a remainder of 0 are carried by a resource block in the class A resource block group, and a group of ports with a remainder of 1 are carried by another resource block in the class A resource block group.

[0090] For another example, the number of resource blocks in a class A resource block group is 3. The ports are grouped according to the remainder of the port sequence number divided by 3. A group of ports with a remainder of 0 are carried by a resource block in the class A resource block group, a group of ports with a remainder of 1 are carried by another resource block in the class A resource block group, and a group of ports with a remainder of 2 are carried by the remaining resource block in the class A resource block group.

[0091] According to the correspondence between the remainder of the port sequence number and the resource block in the class A resource block group, adjacent ports can be easily allocated to different resource blocks, and each resource block in the class A resource block group can carry as close a number of antenna ports as possible, thereby reducing the complexity of the system.

[0092] In another embodiment, the configuration information also includes: Class B frequency domain width, wherein the Class B frequency domain width is used to indicate the number of resource blocks included in the Class A resource block group, and the Class B frequency domain width includes one of the following: the frequency domain width of the channel state information fed back by the terminal; the frequency domain width of the CSI-RS; the frequency domain width of the bandwidth part of the system.

[0093] The base station transmits a channel state information reference signal, the terminal measures the channel state information reference signal, and then feeds back the channel state information. Under the condition of ensuring a certain detection performance, the number of resource blocks included in the Class A resource block group is determined by the bandwidth of the detected channel state information reference signal. The frequency domain width of the channel state information fed back by the terminal is the bandwidth of the actually detected channel state information reference signal, the frequency domain width of the channel state information reference signal indicates the bandwidth of the detected channel state information reference signal, and the frequency domain width of the system bandwidth part is the bandwidth of the channel state information reference signal that may be detected. The configuration information includes the Class B frequency domain width, and implicitly indicating the number of resource blocks included in the Class A resource block group with the Class B frequency domain width can reduce signaling overhead and reduce system complexity. The number of resource blocks included in the Class A resource block group increases with the increase of the Class B frequency domain width; for example, a staged increase. For another example, the number of resource blocks included in the Class A resource block group is jointly indicated by the Class B frequency domain width and the number of channel state information reference signal ports carried by a single resource block; for example, as the number of channel state information reference signal ports carried by a single resource block increases, the number of resource blocks included in the Class A resource block group decreases.

[0094] Furthermore, the Class B frequency domain width is also used to indicate the number of resource blocks included in the Class A resource block group in conjunction with an adjustment coefficient, wherein the adjustment coefficient is used to adjust the number of resource blocks included in the Class A resource block group. Specifically, the number of resource blocks included in the Class A resource block group is indicated jointly by the Class B frequency domain width and the adjustment coefficient. The adjustment coefficient is used to adjust the number of resource blocks included in the Class A resource block group to control the measurement performance using the reference signal; thereby reducing the complexity of the system while ensuring the measurement performance. For example, the number of resource blocks included in the Class A resource block group is monotonically related to the adjustment coefficient; for example, a monotonically increasing relationship, or a monotonically decreasing relationship. For example, the configuration information includes the adjustment parameter.

[0095] In another embodiment, the configuration information further includes the pre-coded frequency domain granularity fed back by the terminal, wherein the pre-coded frequency domain granularity is indicated by the number of resource blocks included in the class A resource block group, and may specifically be an implicit indication.

[0096] Further, the frequency domain granularity of the precoding is indicated by the number of resource blocks included in the class A resource block group in one of the following ways:

[0097] The frequency domain granularity of the precoding is a multiple of the number of resource blocks included in the class A resource block group;

[0098] The frequency domain granularity of the precoding is equal to the number of resource blocks included in the class A resource block group;

[0099] The frequency domain granularity of the precoding is jointly determined by the number of resource blocks included in the class A resource block group and the density of the CSI-RS;

[0100] The correspondence between the frequency domain granularity of the precoding and the number of resource blocks included in the type A resource block group.

[0101] The base station transmits a channel state information reference signal, the terminal measures the channel state information reference signal, and then feeds back the channel state information. Among them, the fed-back channel state information includes the precoding information applied to the antenna port, and the precoding information is presented according to a certain frequency domain unit, that is, it is presented according to a certain frequency domain granularity, that is, the precoding value is within a certain frequency domain range. For example, the frequency domain granularity of the precoding is an integer multiple of the number of resource blocks included in the A-type resource block group. For another example, the frequency domain granularity of the precoding is the number of resource blocks included in the A-type resource block group. For another example, the frequency domain granularity of the precoding is jointly determined by the number of resource blocks included in the A-type resource block group and the density of the channel state information reference signal. For another example, the frequency domain granularity of the precoding is monotonically increasing with the number of resource blocks included in the A-type resource block group, and is monotonically decreasing with the density of the channel state information reference signal.

[0102] In another embodiment, the configuration information also includes the frequency domain range of the terminal feedback channel state information CSI, wherein the frequency domain range of the CSI is represented by a sub-band as the frequency domain granularity, and the number of the class A resource block groups included in the sub-band is an integer.

[0103] That is, the configuration information also includes the frequency domain range of the terminal feedback channel state information, and the frequency domain range of the channel state information is represented by the subband as the frequency domain granularity, and the subband includes an integer number of class A resource block groups. There are an integer number of class A resource block groups in the subband, which facilitates the measurement of the channel state in the subband and avoids the measurement across subbands to reduce the complexity of the system. For example, 1 subband includes 1 class A resource block group. For another example, 1 subband includes 2 class A resource block groups. For another example, 1 subband includes 3 class A resource block groups.

[0104] Example 2

[0105] According to another aspect of an embodiment of the present invention, a channel state information reference signal transmission method is also provided. Figure 3 The process of the channel state information reference signal transmission method according to an embodiment of the present invention is as follows Figure 2 ,like Figure 3As shown, including:

[0106] Step S302, receiving configuration information, wherein the configuration information includes the number of resource blocks included in a type A resource block group consisting of continuous resource blocks of all ports carrying channel state information reference signals CSI-RS;

[0107] Step S304: Receive the CSI-RS according to the configuration information.

[0108] Receive configuration information from a base station, and receive a channel state information reference signal according to the configuration information; wherein the configuration information includes: the number of resource blocks included in a class A resource block group; a class A resource block group is a resource block combination consisting of continuous resource blocks carrying a channel state information reference signal, and all ports of the channel state information reference signal appear only once in the resource block combination.

[0109] Through the above steps S302 to S304, the problem of increasing system complexity due to the non-fixed number of antenna ports of the channel state information reference signal in the related art can be solved. The CSI-RS is transmitted by configuring the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying the CSI-RS, thereby reducing the system complexity.

[0110] In one embodiment, the configuration information is further used to indicate one of the following states of the class A resource block group:

[0111] The resource blocks in the class A resource block group are continuous;

[0112] The resource blocks in the class A resource block group are discontinuous;

[0113] The class A resource block groups are continuous;

[0114] The class A resource block groups are discontinuous.

[0115] In one embodiment, the configuration information further includes density information of the CSI-RS, wherein the density information of the CSI-RS is used to indicate one of the following states of the class A resource block group:

[0116] The resource blocks in the class A resource block group are continuous;

[0117] The resource blocks in the class A resource block group are not continuous;

[0118] The class A resource blocks are continuous;

[0119] The class A resource block groups are not continuous.

[0120] In one embodiment, the A-type resource block groups are equally spaced or have equally different positions within the frequency domain range for transmitting the CSI-RS.

[0121] In one embodiment, the configuration information further includes the density of the class A resource block groups, wherein the density of the class A resource block groups is explicitly indicated or implicitly indicated in the configuration information.

[0122] In one embodiment, the density of the class A resource block group is indicated by one of the following ways:

[0123] By indicating the number of the type A resource block groups within the frequency domain range for transmitting the CSI-RS;

[0124] By indicating the number of said type A resource block groups averaged into a predetermined number of frequency domain units;

[0125] By indicating the difference between the adjacent type A resource block groups in the frequency domain;

[0126] By indicating the spacing distance between adjacent type A resource block groups in the frequency domain;

[0127] By indicating that every M frequency domain resource blocks have one type A resource block group, where M is a positive integer;

[0128] By indicating that on average there are N type A resource block groups within a frequency domain range of each type A resource block group size, wherein N is a real number.

[0129] In an embodiment, the density of the type A resource block group is used to indicate whether the type A resource block group is continuous or discontinuous within a frequency domain range for transmitting the CSI-RS.

[0130] In one embodiment, the density of the Class A resource block groups is indicated by indicating the number of Class A resource block groups within the frequency domain range for transmitting the CSI-RS, wherein if the density of the Class A resource block groups is greater than or equal to a preset threshold, the Class A resource block groups are continuous within the frequency domain range for transmitting the CSI-RS; if the density of the Class A resource block groups is less than the preset threshold, the Class A resource block groups are non-continuous within the frequency domain range for transmitting the CSI-RS.

[0131] In one embodiment, the CSI-RS port groups correspond one-to-one to the resource blocks in the A-type resource block group.

[0132] In one embodiment, the correspondence between the port group and the resource blocks in the class A resource block group includes one of the following:

[0133] The port number of the CSI-RS corresponds to the number of the resource block in the class A resource block group;

[0134] The port number of the CSI-RS corresponds to the frequency of the resource block in the class A resource block group;

[0135] Ports with the same remainder obtained by calculating the modulus of the port sequence number of the CSI-RS and the number of resource blocks in the type A resource block group are ports of the same group.

[0136] In one embodiment, the configuration information further includes: a class B frequency domain width, wherein the class B frequency domain width is used to indicate the number of resource blocks included in the class A resource block group, and the class B frequency domain width includes one of the following:

[0137] The frequency domain width of the channel state information fed back by the terminal;

[0138] The frequency domain width of the CSI-RS;

[0139] The frequency domain width of the bandwidth portion of the system.

[0140] In one embodiment, the Class B frequency domain width is also used together with an adjustment coefficient to indicate the number of resource blocks included in the Class A resource block group, wherein the adjustment coefficient is used to adjust the number of resource blocks included in the Class A resource block group.

[0141] In one embodiment, the configuration information further includes the pre-coding frequency domain granularity fed back by the terminal, wherein the pre-coding frequency domain granularity is indicated by the number of resource blocks included in the A-type resource block group.

[0142] In one embodiment, the frequency domain granularity of the precoding is indicated by the number of resource blocks included in the class A resource block group in one of the following ways:

[0143] The frequency domain granularity of the precoding is a multiple of the number of resource blocks included in the class A resource block group;

[0144] The frequency domain granularity of the precoding is equal to the number of resource blocks included in the class A resource block group;

[0145] The frequency domain granularity of the precoding is jointly determined by the number of resource blocks included in the class A resource block group and the density of the CSI-RS;

[0146] The correspondence between the frequency domain granularity of the precoding and the number of resource blocks included in the type A resource block group.

[0147] In one embodiment, the configuration information also includes the frequency domain range of the terminal feedback channel state information CSI, wherein the frequency domain range of the CSI is represented by a sub-band as the frequency domain granularity, and the number of the class A resource block groups included in the sub-band is an integer.

[0148] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0149] Example 3

[0150] In this embodiment, a channel state information reference signal transmission device is also provided, which is used to implement the above embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0151] Figure 4 The frame of the channel state information reference signal transmission device according to the embodiment of the present invention is Figure 1 ,like Figure 4 As shown, including:

[0152] A first transmission module 42 is used to transmit configuration information, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0153] The second transmission module 44 is configured to transmit the CSI-RS to a terminal according to the configuration information.

[0154] The configuration information is further used to indicate one of the following states of the class A resource block group:

[0155] The resource blocks in the class A resource block group are continuous;

[0156] The resource blocks in the class A resource block group are discontinuous;

[0157] The class A resource block groups are continuous;

[0158] The class A resource block groups are discontinuous.

[0159] In one embodiment, the configuration information further includes density information of the CSI-RS, wherein the density information of the CSI-RS is used to indicate one of the following states of the class A resource block group:

[0160] The resource blocks in the class A resource block group are continuous;

[0161] The resource blocks in the class A resource block group are not continuous;

[0162] The class A resource blocks are continuous;

[0163] The class A resource block groups are not continuous.

[0164] In another embodiment, the A-type resource block groups are equally spaced or have equal position differences within the frequency domain range for transmitting the CSI-RS.

[0165] In another embodiment, the configuration information further includes the density of the class A resource block group, wherein the density of the class A resource block group is explicitly indicated or implicitly indicated in the configuration information.

[0166] In another embodiment, the density of the class A resource block group is indicated by one of the following ways:

[0167] By indicating the number of the type A resource block groups within the frequency domain range for transmitting the CSI-RS;

[0168] By indicating the number of said type A resource block groups averaged into a predetermined number of frequency domain units;

[0169] By indicating the difference between the adjacent type A resource block groups in the frequency domain;

[0170] By indicating the spacing distance between adjacent type A resource block groups in the frequency domain;

[0171] By indicating that every M frequency domain resource blocks have one type A resource block group, where M is a positive integer;

[0172] By indicating that on average there are N type A resource block groups within a frequency domain range of each type A resource block group size, wherein N is a real number.

[0173] In another embodiment, the density of the type A resource block group is used to indicate whether the type A resource block group is continuous or discontinuous within the frequency domain range for transmitting the CSI-RS.

[0174] In another embodiment, the density of the Class A resource block group is indicated by indicating the number of Class A resource block groups within the frequency domain range for transmitting the CSI-RS, wherein if the density of the Class A resource block group is greater than or equal to a preset threshold, the Class A resource block group is continuous within the frequency domain range for transmitting the CSI-RS; if the density of the Class A resource block group is less than the preset threshold, the Class A resource block group is non-continuous within the frequency domain range for transmitting the CSI-RS.

[0175] In another embodiment, the CSI-RS port groups correspond one-to-one to the resource blocks in the A-type resource block group.

[0176] In another embodiment, the correspondence between the port group and the resource blocks in the class A resource block group includes one of the following:

[0177] The port number of the CSI-RS corresponds to the number of the resource block in the class A resource block group;

[0178] The port number of the CSI-RS corresponds to the frequency of the resource block in the class A resource block group;

[0179] Ports with the same remainder obtained by calculating the modulus of the port sequence number of the CSI-RS and the number of resource blocks in the type A resource block group are ports of the same group.

[0180] In another embodiment, the configuration information further includes: a Class B frequency domain width, wherein the Class B frequency domain width is used to indicate the number of resource blocks included in the Class A resource block group, and the Class B frequency domain width includes one of the following:

[0181] The frequency domain width of the channel state information fed back by the terminal;

[0182] The frequency domain width of the CSI-RS;

[0183] The frequency domain width of the bandwidth portion of the system.

[0184] In another embodiment, the Class B frequency domain width is also used together with an adjustment coefficient to indicate the number of resource blocks included in the Class A resource block group, wherein the adjustment coefficient is used to adjust the number of resource blocks included in the Class A resource block group.

[0185] In another embodiment, the configuration information further includes the pre-coding frequency domain granularity fed back by the terminal, wherein the pre-coding frequency domain granularity is indicated by the number of resource blocks included in the A-type resource block group.

[0186] In another embodiment, the pre-coded frequency domain granularity is indicated by the number of resource blocks included in the class A resource block group in one of the following ways:

[0187] The frequency domain granularity of the precoding is a multiple of the number of resource blocks included in the class A resource block group;

[0188] The frequency domain granularity of the precoding is equal to the number of resource blocks included in the class A resource block group;

[0189] The frequency domain granularity of the precoding is jointly determined by the number of resource blocks included in the class A resource block group and the density of the CSI-RS;

[0190] The correspondence between the frequency domain granularity of the precoding and the number of resource blocks included in the type A resource block group.

[0191] In another embodiment, the configuration information also includes the frequency domain range of the terminal feedback channel state information CSI, wherein the frequency domain range of the CSI is represented by a sub-band as the frequency domain granularity, and the number of the class A resource block groups included in the sub-band is an integer.

[0192] Example 4

[0193] According to another aspect of an embodiment of the present invention, a channel state information reference signal transmission device is provided. Figure 5 The frame of the channel state information reference signal transmission device according to the embodiment of the present invention is Figure 2 ,like Figure 5 As shown, including:

[0194] A first receiving module 52 is configured to receive configuration information, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0195] The second receiving module 54 is configured to receive the CSI-RS according to the configuration information.

[0196] The configuration information is further used to indicate one of the following states of the class A resource block group:

[0197] The resource blocks in the class A resource block group are continuous;

[0198] The resource blocks in the class A resource block group are discontinuous;

[0199] The class A resource block groups are continuous;

[0200] The class A resource block groups are discontinuous.

[0201] In one embodiment, the configuration information further includes density information of the CSI-RS, wherein the density information of the CSI-RS is used to indicate one of the following states of the class A resource block group:

[0202] The resource blocks in the class A resource block group are continuous;

[0203] The resource blocks in the class A resource block group are not continuous;

[0204] The class A resource blocks are continuous;

[0205] The class A resource block groups are not continuous.

[0206] In another embodiment, the A-type resource block groups are equally spaced or have equal position differences within the frequency domain range for transmitting the CSI-RS.

[0207] In another embodiment, the configuration information further includes the density of the class A resource block group, wherein the density of the class A resource block group is explicitly indicated or implicitly indicated in the configuration information.

[0208] In another embodiment, the density of the class A resource block group is indicated by one of the following ways:

[0209] By indicating the number of the type A resource block groups within the frequency domain range for transmitting the CSI-RS;

[0210] By indicating the number of said type A resource block groups averaged into a predetermined number of frequency domain units;

[0211] By indicating the difference between the adjacent type A resource block groups in the frequency domain;

[0212] By indicating the spacing distance between adjacent type A resource block groups in the frequency domain;

[0213] By indicating that every M frequency domain resource blocks have one type A resource block group, where M is a positive integer;

[0214] By indicating that on average there are N type A resource block groups within a frequency domain range of each type A resource block group size, wherein N is a real number.

[0215] In another embodiment, the density of the type A resource block group is used to indicate whether the type A resource block group is continuous or discontinuous within the frequency domain range for transmitting the CSI-RS.

[0216] In another embodiment, the density of the Class A resource block group is indicated by indicating the number of Class A resource block groups within the frequency domain range for transmitting the CSI-RS, wherein if the density of the Class A resource block group is greater than or equal to a preset threshold, the Class A resource block group is continuous within the frequency domain range for transmitting the CSI-RS; if the density of the Class A resource block group is less than the preset threshold, the Class A resource block group is non-continuous within the frequency domain range for transmitting the CSI-RS.

[0217] In another embodiment, the CSI-RS port groups correspond one-to-one to the resource blocks in the A-type resource block group.

[0218] In another embodiment, the correspondence between the port group and the resource blocks in the class A resource block group includes one of the following:

[0219] The port number of the CSI-RS corresponds to the number of the resource block in the class A resource block group;

[0220] The port number of the CSI-RS corresponds to the frequency of the resource block in the class A resource block group;

[0221] Ports with the same remainder obtained by calculating the modulus of the port sequence number of the CSI-RS and the number of resource blocks in the type A resource block group are ports of the same group.

[0222] In another embodiment, the configuration information further includes: a Class B frequency domain width, wherein the Class B frequency domain width is used to indicate the number of resource blocks included in the Class A resource block group, and the Class B frequency domain width includes one of the following:

[0223] The frequency domain width of the channel state information fed back by the terminal;

[0224] The frequency domain width of the CSI-RS;

[0225] The frequency domain width of the bandwidth portion of the system.

[0226] In another embodiment, the Class B frequency domain width is also used together with an adjustment coefficient to indicate the number of resource blocks included in the Class A resource block group, wherein the adjustment coefficient is used to adjust the number of resource blocks included in the Class A resource block group.

[0227] In another embodiment, the configuration information further includes the pre-coding frequency domain granularity fed back by the terminal, wherein the pre-coding frequency domain granularity is indicated by the number of resource blocks included in the A-type resource block group.

[0228] In another embodiment, the pre-coded frequency domain granularity is indicated by the number of resource blocks included in the class A resource block group in one of the following ways:

[0229] The frequency domain granularity of the precoding is a multiple of the number of resource blocks included in the class A resource block group;

[0230] The frequency domain granularity of the precoding is equal to the number of resource blocks included in the class A resource block group;

[0231] The frequency domain granularity of the precoding is jointly determined by the number of resource blocks included in the class A resource block group and the density of the CSI-RS;

[0232] The correspondence between the frequency domain granularity of the precoding and the number of resource blocks included in the type A resource block group.

[0233] In another embodiment, the configuration information also includes the frequency domain range of the terminal feedback channel state information CSI, wherein the frequency domain range of the CSI is represented by a sub-band as the frequency domain granularity, and the number of the class A resource block groups included in the sub-band is an integer.

[0234] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0235] Example 5

[0236] An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0237] In one embodiment, in this embodiment, the above storage medium may be configured to store a computer program for performing the following steps:

[0238] S11, transmitting configuration information to the terminal, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0239] S12: Transmit the CSI-RS to the terminal according to the configuration information.

[0240] In another embodiment, in this embodiment, the above storage medium may also be configured to store a computer program for performing the following steps:

[0241] S21, receiving configuration information, wherein the configuration information includes the number of resource blocks included in a type A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0242] S22: Receive the CSI-RS according to the configuration information.

[0243] In another embodiment, the storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.

[0244] Example 6

[0245] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0246] In one embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0247] In another embodiment, the processor may be configured to perform the following steps by a computer program:

[0248] S11, transmitting configuration information to the terminal, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0249] S12: Transmit the CSI-RS to the terminal according to the configuration information.

[0250] In another embodiment, the processor may be further configured to perform the following steps through a computer program:

[0251] S21, receiving configuration information, wherein the configuration information includes the number of resource blocks included in a type A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS;

[0252] S22: Receive the CSI-RS according to the configuration information.

[0253] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0254] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0255] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for transmitting a channel state information reference signal, characterized in that: include: Transmit configuration information to a terminal, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS; the configuration information also includes density information of the CSI-RS, wherein the density information of the CSI-RS is used to indicate one of the following states of the class A resource block group: the resource blocks within the class A resource block group are continuous; the resource blocks within the class A resource block group are discontinuous; the class A resource block groups are continuous; the class A resource block groups are discontinuous, the class A resource block group is a resource block combination consisting of continuous resource blocks carrying a channel state information reference signal, and all ports of the channel state information reference signal appear only once in the resource block combination; The CSI-RS is transmitted to the terminal according to the configuration information.

2. The method according to claim 1, characterized in that: The configuration information is further used to indicate one of the following states of the class A resource block group: The resource blocks in the class A resource block group are continuous; The resource blocks in the class A resource block group are discontinuous; The class A resource block groups are continuous; The class A resource block groups are discontinuous.

3. The method according to claim 1, characterized in that The A-type resource block groups are equally spaced or have equally different positions within a frequency domain range for transmitting the CSI-RS.

4. The method according to claim 1, characterized in that: The configuration information further includes the density of the class A resource block group, wherein the density of the class A resource block group is explicitly indicated or implicitly indicated in the configuration information.

5. The method according to claim 4, characterized in that The density of the class A resource block group is indicated by one of the following ways: By indicating the number of the type A resource block groups within the frequency domain range for transmitting the CSI-RS; By indicating the number of said type A resource block groups averaged into a predetermined number of frequency domain units; By indicating the difference between the adjacent type A resource block groups in the frequency domain; By indicating the spacing distance between adjacent type A resource block groups in the frequency domain; By indicating that every M frequency domain resource blocks have one type A resource block group, where M is a positive integer; By indicating that on average there are N type A resource block groups within a frequency domain range of each type A resource block group size, wherein N is a real number.

6. The method according to claim 4, characterized in that The density of the type A resource block group is used to indicate whether the type A resource block group is continuous or discontinuous within the frequency domain range for transmitting the CSI-RS.

7. The method according to claim 6, characterized in that The density of the Class A resource block groups is indicated by indicating the number of Class A resource block groups within the frequency domain range for transmitting the CSI-RS, wherein if the density of the Class A resource block groups is greater than or equal to a preset threshold, the Class A resource block groups are continuous within the frequency domain range for transmitting the CSI-RS; if the density of the Class A resource block groups is less than the preset threshold, the Class A resource block groups are non-continuous within the frequency domain range for transmitting the CSI-RS.

8. The method according to claim 1, characterized in that: The CSI-RS port groups correspond one-to-one to the resource blocks in the A-type resource block group.

9. The method according to claim 8, characterized in that The correspondence between the port group and the resource blocks in the class A resource block group includes one of the following: The port number of the CSI-RS corresponds to the number of the resource block in the class A resource block group; The port number of the CSI-RS corresponds to the frequency of the resource block in the class A resource block group; Ports with the same remainder obtained by calculating the modulus of the port sequence number of the CSI-RS and the number of resource blocks in the type A resource block group are ports of the same group.

10. The method according to any one of claims 1 to 9, characterized in that The configuration information further includes: a class B frequency domain width, wherein the class B frequency domain width is used to indicate the number of resource blocks included in the class A resource block group, and the class B frequency domain width includes one of the following: The frequency domain width of the channel state information fed back by the terminal; The frequency domain width of the CSI-RS; The frequency domain width of the bandwidth portion of the system.

11. The method according to claim 10, characterized in that The class B frequency domain width is also used to indicate the number of resource blocks included in the class A resource block group in conjunction with the adjustment coefficient, wherein: The adjustment coefficient is used to adjust the number of resource blocks included in the class A resource block group.

12. The method according to any one of claims 1 to 9, characterized in that The configuration information further includes the pre-coding frequency domain granularity fed back by the terminal, wherein the pre-coding frequency domain granularity is indicated by the number of resource blocks included in the A-type resource block group.

13. The method according to claim 12, characterized in that The frequency domain granularity of the precoding is indicated by the number of resource blocks included in the class A resource block group in one of the following ways: The frequency domain granularity of the precoding is a multiple of the number of resource blocks included in the class A resource block group; The frequency domain granularity of the precoding is equal to the number of resource blocks included in the class A resource block group; The frequency domain granularity of the precoding is jointly determined by the number of resource blocks included in the class A resource block group and the density of the CSI-RS; The correspondence between the frequency domain granularity of the precoding and the number of resource blocks included in the type A resource block group.

14. The method according to any one of claims 1 to 9, characterized in that The configuration information also includes a frequency domain range of the terminal feedback channel state information CSI, wherein the frequency domain range of the CSI is represented by a sub-band as a frequency domain granularity, and the number of the class A resource block groups included in the sub-band is an integer.

15. A method for transmitting a channel state information reference signal, characterized in that: include: Receive configuration information, wherein the configuration information includes the number of resource blocks included in a class A resource block group consisting of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS; the configuration information also includes density information of the CSI-RS, wherein the density information of the CSI-RS is used to indicate one of the following states of the class A resource block group: the resource blocks within the class A resource block group are continuous; the resource blocks within the class A resource block group are discontinuous; the class A resource block groups are continuous; the class A resource block groups are discontinuous, the class A resource block group is a resource block combination consisting of continuous resource blocks carrying a channel state information reference signal, and all ports of the channel state information reference signal appear only once in the resource block combination; The CSI-RS is received according to the configuration information.

16. The method according to claim 15, characterized in that The configuration information is further used to indicate one of the following states of the class A resource block group: The resource blocks in the class A resource block group are continuous; The resource blocks in the class A resource block group are discontinuous; The class A resource block groups are continuous; The class A resource block groups are discontinuous.

17. The method according to claim 15, characterized in that The A-type resource block groups are equally spaced or have equally different positions within a frequency domain range for transmitting the CSI-RS.

18. The method according to claim 15, characterized in that The configuration information further includes the density of the class A resource block group, wherein the density of the class A resource block group is explicitly indicated or implicitly indicated in the configuration information.

19. The method according to claim 18, characterized in that The density of the class A resource block group is indicated by one of the following ways: By indicating the number of the type A resource block groups within the frequency domain range for transmitting the CSI-RS; By indicating the number of said type A resource block groups averaged into a predetermined number of frequency domain units; By indicating the difference between the adjacent type A resource block groups in the frequency domain; By indicating the spacing distance between adjacent type A resource block groups in the frequency domain; By indicating that every M frequency domain resource blocks have one type A resource block group, where M is a positive integer; By indicating that on average there are N type A resource block groups within a frequency domain range of each type A resource block group size, wherein N is a real number.

20. The method according to claim 18, characterized in that The density of the type A resource block group is used to indicate whether the type A resource block group is continuous or discontinuous within the frequency domain range for transmitting the CSI-RS.

21. The method according to claim 20, characterized in that The density of the Class A resource block groups is indicated by indicating the number of Class A resource block groups within the frequency domain range for transmitting the CSI-RS, wherein if the density of the Class A resource block groups is greater than or equal to a preset threshold, the Class A resource block groups are continuous within the frequency domain range for transmitting the CSI-RS; if the density of the Class A resource block groups is less than the preset threshold, the Class A resource block groups are non-continuous within the frequency domain range for transmitting the CSI-RS.

22. The method according to claim 15, characterized in that The CSI-RS port groups correspond one-to-one to the resource blocks in the A-type resource block group.

23. The method according to claim 22, characterized in that The correspondence between the port group and the resource blocks in the class A resource block group includes one of the following: The port number of the CSI-RS corresponds to the number of the resource block in the class A resource block group; The port number of the CSI-RS corresponds to the frequency of the resource block in the class A resource block group; Ports with the same remainder obtained by calculating the modulus of the port sequence number of the CSI-RS and the number of resource blocks in the type A resource block group are ports of the same group.

24. The method according to any one of claims 15 to 23, characterized in that The configuration information further includes: a class B frequency domain width, wherein the class B frequency domain width is used to indicate the number of resource blocks included in the class A resource block group, and the class B frequency domain width includes one of the following: The frequency domain width of the channel state information fed back by the terminal; The frequency domain width of the CSI-RS; The frequency domain width of the bandwidth portion of the system.

25. The method according to claim 24, characterized in that The class B frequency domain width is also used to indicate the number of resource blocks included in the class A resource block group in conjunction with the adjustment coefficient, wherein: The adjustment coefficient is used to adjust the number of resource blocks included in the class A resource block group.

26. The method according to any one of claims 15 to 23, characterized in that The configuration information further includes the pre-coding frequency domain granularity fed back by the terminal, wherein the pre-coding frequency domain granularity is indicated by the number of resource blocks included in the A-type resource block group.

27. The method according to claim 26, characterized in that The frequency domain granularity of the precoding is indicated by the number of resource blocks included in the class A resource block group in one of the following ways: The frequency domain granularity of the precoding is a multiple of the number of resource blocks included in the class A resource block group; The frequency domain granularity of the precoding is equal to the number of resource blocks included in the class A resource block group; The frequency domain granularity of the precoding is jointly determined by the number of resource blocks included in the class A resource block group and the density of the CSI-RS; The correspondence between the frequency domain granularity of the precoding and the number of resource blocks included in the type A resource block group.

28. The method according to any one of claims 15 to 23, characterized in that The configuration information also includes a frequency domain range of the terminal feedback channel state information CSI, wherein the frequency domain range of the CSI is represented by a sub-band as a frequency domain granularity, and the number of the class A resource block groups included in the sub-band is an integer.

29. A channel state information reference signal transmission device, characterized in that: include: A first transmission module is used to transmit configuration information, wherein the configuration information includes the number of resource blocks included in a class A resource block group composed of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS, and the configuration information also includes density information of the CSI-RS, wherein the density information of the CSI-RS is used to indicate one of the following states of the class A resource block group: the resource blocks within the class A resource block group are continuous; the resource blocks within the class A resource block group are discontinuous; the class A resource block groups are continuous; the class A resource block groups are discontinuous, the class A resource block group is a resource block combination composed of continuous resource blocks carrying a channel state information reference signal, and all ports of the channel state information reference signal appear only once in the resource block combination; The second transmission module is used to transmit the CSI-RS to the terminal according to the configuration information.

30. A channel state information reference signal transmission device, characterized in that: include: A first receiving module is used to receive configuration information, wherein the configuration information includes the number of resource blocks included in a class A resource block group composed of continuous resource blocks of all ports carrying a channel state information reference signal CSI-RS, and the configuration information also includes density information of the CSI-RS, wherein the density information of the CSI-RS is used to indicate one of the following states of the class A resource block group: the resource blocks within the class A resource block group are continuous; the resource blocks within the class A resource block group are discontinuous; the class A resource block groups are continuous; the class A resource block groups are discontinuous, and the class A resource block group is a resource block combination composed of continuous resource blocks carrying a channel state information reference signal, and all ports of the channel state information reference signal appear only once in the resource block combination; The second receiving module is used to receive the CSI-RS according to the configuration information.

31. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the method described in any one of claims 1 to 14 and 15 to 28 when executed.

32. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to perform the method described in any one of claims 1 to 14 and 15 to 28.

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