Channel state information transmission method and apparatus, and storage medium

Abstract

Provided are a channel state information transmission method and apparatus, and a storage medium. The method comprises: receiving configuration information; and on the basis of the configuration information, sending channel state information, wherein the configuration information comprises report content of the channel state information and a channel state information report frequency band; the report content of the channel state information comprises indication information of a precoding matrix; and in the sent channel state information, the indication information of the precoding matrix is divided into M indication information groups according to frequency domain, and a transmission order of the M indication information groups is determined on the basis of priorities corresponding to indication information groups among the M indication information groups.

Description

Channel status information transmission method, apparatus and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202510136522.2, filed on February 6, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a method, apparatus and storage medium for transmitting channel state information. Background Technology

[0003] In wireless communication systems, base stations send instructions to terminals, requesting them to report channel state information (CSI) from the base station to the terminal. This CSI is crucial for the base station because it provides key information about the current channel conditions, aiding in resource allocation and scheduling decisions. However, in actual transmission, channel changes, channel fading, or sudden surges in traffic can lead to resource constraints, making it impossible to carry all the CSI content. In such cases, the terminal needs to discard some CSI content to ensure the remaining CSI is reliably transmitted to the base station. However, determining which portion of CSI content the terminal should discard requires further investigation. Summary of the Invention

[0004] On the one hand, a channel state information transmission method is provided, applied to a first node, the method comprising:

[0005] Receive configuration information;

[0006] Channel state information is transmitted based on configuration information; wherein, the configuration information includes the report content of the channel state information and the report frequency band of the channel state information; the report content of the channel state information includes the indication information of the precoding matrix; in the transmitted channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain, and the transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups; wherein M is an integer greater than 1.

[0007] On the other hand, a channel state information transmission method is provided, applied to a second node, the method comprising:

[0008] Send configuration information;

[0009] Receive channel state information; wherein the channel state information is determined based on configuration information; the configuration information includes the report content of the channel state information and the report frequency band of the channel state information; the report content of the channel state information includes the indication information of the precoding matrix; in the received channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain, and the transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups; wherein M is an integer greater than 1.

[0010] On another front, a channel state information transmission device is provided, applied to a first node, the device comprising:

[0011] The first communication module is used to receive configuration information;

[0012] The second communication module is used to send channel state information based on configuration information. The configuration information includes the report content of the channel state information and the reporting frequency band of the channel state information. The report content of the channel state information includes the indication information of the precoding matrix. In the transmitted channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain. The transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups. M is an integer greater than 1.

[0013] On another front, a channel state information transmission device is provided for use in a second node, the device comprising:

[0014] The first communication module is used to send configuration information;

[0015] The second communication module is used to receive channel state information. The channel state information is determined based on configuration information. The configuration information includes the report content of the channel state information and the reporting frequency band of the channel state information. The report content of the channel state information includes the indication information of the precoding matrix. In the received channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain. The transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups. M is an integer greater than 1.

[0016] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program instructions executable by the processor; and the processor, when executing the computer program instructions, implements the channel state information transmission method of any of the above embodiments.

[0017] In another aspect, a computer-readable storage medium is provided, including a non-transitory computer-readable storage medium storing computer program instructions that, when executed on a computer (e.g., a communication device or a channel state information transmission device), implement the channel state information transmission method of any of the above embodiments.

[0018] In another aspect, a computer program product is provided, which includes computer program instructions that, when executed, implement the channel state information transmission method of any of the above embodiments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings.

[0020] Figure 1 is a schematic diagram of the architecture of a communication system according to some embodiments.

[0021] Figure 2 is a flowchart of a channel state information transmission method according to some embodiments.

[0022] Figure 3 is a flowchart of another channel state information transmission method provided according to some embodiments.

[0023] Figure 4 is a block diagram of a channel state information transmission device according to some embodiments.

[0024] Figure 5 is a block diagram of another channel state information transmission device according to some embodiments.

[0025] Figure 6 is a block diagram of a communication device according to some embodiments. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, the technical solutions of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0027] In this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0028] It should be noted that in this disclosure, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0029] In orthogonal frequency division modulation (OFDM) based techniques, the smallest frequency domain unit is a subcarrier, and the smallest time domain unit is an OFDM symbol. To facilitate the use of frequency domain resources, a resource block is defined, which is defined as a specific number of consecutive subcarriers. A bandwidth part (BWP) is also defined, which is defined as another specific number of consecutive resource blocks on a carrier. To facilitate the use of time domain resources, a slot is defined, which is defined as another specific number of consecutive OFDM symbols.

[0030] The reference signal transmitted from the base station to the terminal is the downlink reference signal. In the Long Term Evolution (LTE) system, the downlink reference signals used for channel state information reporting include cell-specific reference signals (CRS) and channel-state information reference signals (CSI-RS). In the New Radio (NR) system, the downlink reference signals used for channel state information reporting also include channel-state information reference signals (CSI-RS). The channel state information reference signal (CSI-RS) is carried by a channel state information reference signal resource, which is composed of code division multiplexing groups (CDM groups). A CDM group consists of radio resource elements, and the CSI-RS of a group of CSI-RS ports are multiplexed on it using code division multiplexing.

[0031] The channel state information transmitted between the base station and the terminal includes channel quality indicator (CQI) to indicate the quality of the channel; or precoding matrix indicator (PMI) to indicate the precoding matrix applied to the base station antenna. One type of CQI reporting format is wideband CQI reporting, which reports a channel quality for the entire CQI reporting band. Another type of CQI reporting format is subband CQI reporting, which provides channel quality for each subband of the CQI reporting band, with one channel quality corresponding to one subband; that is, it reports a channel quality for each subband of the CQI reporting band. A subband is a frequency domain unit, defined as N consecutive resource blocks (RBs), where N is a positive integer. For ease of description, this disclosure refers to it as a channel quality indicator subband, or a CQI subband, or simply a subband. Here, N is called the size of the channel quality indicator subband, or the CQI subband size, or simply the subband size. The bandwidth part (BWP) is divided into subbands, and the channel state information reporting frequency band is defined using a subset of the BWP's subbands. The channel state information reporting frequency band is the frequency band on which channel state information needs to be reported.

[0032] One way to determine channel quality is based on the strength of the reference signal received by the terminal; another way is based on the signal-to-interference-noise ratio (SINR) of the received reference signal. In the channel state information reporting band, if the channel quality does not change significantly, reporting CQI using a wideband CQI reporting method can reduce the resource overhead for CQI reporting; if the channel quality varies significantly in the frequency domain, reporting CQI using a sub-band CQI reporting method can increase the accuracy of CQI reporting.

[0033] One type of PMI reporting format is the wideband PMI report, which reports one PMI for the entire channel state information reporting band. Another type of PMI reporting format is the sub-band PMI report, which reports one PMI for each sub-band of the channel state information reporting band, or reports a component of a PMI for each sub-band of the channel state information reporting band. For example, if a PMI consists of X1 and X2, one way to report a component of a PMI for each sub-band of the channel state information reporting band is to report one X1 for the entire band and one X2 for each sub-band; another way is to report one X1 and one X2 for each sub-band.

[0034] Another type of PMI reporting format indicates that each subband contains R precoding matrices, where R is a positive integer. In terms of the frequency domain granularity of the feedback precoding matrices, R represents the number of precoding matrix subbands included in each subband, or the number of precoding matrix subbands included in each CQI subband.

[0035] In a wireless communication system, the base station transmits a reference signal; the terminal measures the reference signal, determines the channel state information from the base station to the terminal, and reports the channel state information to the base station; the base station receives the channel state information reported by the terminal. Based on the received channel state information, the base station determines the data transmission strategy and transmits the data, thereby improving data transmission efficiency.

[0036] The base station instructs the terminal on the content of the channel state information (CSI) from the base station to the terminal that the terminal needs to report; correspondingly, the terminal reports the CSI to the base station according to the base station's instructions. During this process, due to changes in the channel from the terminal to the base station, channel fading may worsen, and the originally allocated radio resources may not be able to carry all the CSI content; or, due to sudden tasks, the radio resources available for transmitting CSI may decrease, making it impossible to carry all the CSI content. In such cases, the terminal needs to discard part of the CSI content to ensure that the remaining CSI content is reliably transmitted to the base station. However, the question of which part of the CSI content the terminal should discard requires further research.

[0037] Here, the base station transmits a reference signal; the terminal measures the reference signal, determines the channel state information from the base station to the terminal, and reports the channel state information to the base station; the base station receives the channel state information reported by the terminal. Based on the received channel state information, the base station determines a data transmission strategy and transmits data, thereby improving data transmission efficiency. If the channel state information discarded by the terminal is inappropriate, the base station cannot determine a suitable data transmission strategy, which will reduce data transmission efficiency and degrade system performance.

[0038] In view of this, the present disclosure provides a channel state information transmission method, the method comprising: receiving configuration information; and transmitting channel state information based on the configuration information. Here, the configuration information includes the report content of the channel state information and the report frequency band of the channel state information; the report content of the channel state information includes indication information of the precoding matrix; in the transmitted channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain, and the transmission order of the M indication information groups is determined based on the priority corresponding to each indication information group in the M indication information groups.

[0039] In this way, the content and frequency band of the channel state information (CSO) report can be clearly defined by configuring the information indication. Here, the indication information for the precoding matrix included in the CSO is divided into M indication information groups according to the frequency domain, and the transmission order of the M indication information groups is determined based on the priority of each indication information group within the M groups. This strategy ensures that more important CSO information is transmitted within limited resources, thereby improving the reliability of CSO transmission.

[0040] The channel state information transmission method provided in this disclosure can be applied to systems with various communication standards. For example, the systems to which the channel state information transmission method provided in this disclosure is applicable include, but are not limited to, LTE systems, various versions based on LTE evolution, 5th generation (5G) communication systems, wireless fidelity (WIFI) systems, 3GPP-related communication systems, ambient internet of things (Ambient IoT) systems, or systems integrating multiple systems. In addition, the channel state information transmission method provided in this disclosure can also be applied to future-oriented communication systems (such as 6th and 7th generation communication systems), etc., and this disclosure does not limit this application.

[0041] The network architecture of the mobile communication network (including but not limited to existing mobile communication networks and future mobile communication networks) in this disclosure embodiment may include at least a first communication node and a second communication node. In the uplink, the first communication node may be a terminal-side device (e.g., including but not limited to a terminal), and the second communication node may be a network-side device (e.g., including but not limited to a base station). In the downlink, the second communication node may be a terminal-side device (e.g., including but not limited to a terminal), and the first communication node may be a network-side device (e.g., including but not limited to a base station). Here, the first communication node may be referred to as the first node, and the second communication node may be referred to as the second node.

[0042] For example, taking a first node as a terminal and a second node as a base station, Figure 1 is a schematic diagram of the architecture of a communication system according to some embodiments. The communication system includes a terminal 10 and a base station 20. The terminal 10 and the base station 20 are communicatively connected. There can be one or more terminals 10 and base stations 20, and this disclosure does not limit the number.

[0043] Here, terminal 10 can be a terminal-side device (such as, but not limited to, a terminal, an IoT device), and base station 20 can be a network-side device (such as, but not limited to, a base station, an access network device, a relay, an auxiliary communication node, etc.).

[0044] In some embodiments, the random access type supported by the terminal for random access procedures with network devices is a capability of the terminal, and different terminals may support different random access types.

[0045] In some embodiments, the terminal may be a traditional terminal, a 5G lightweight user terminal (RedCap terminal), etc.

[0046] In some embodiments, a terminal can be a device with wireless transceiver capabilities. A terminal can be a passive device, an ambient IoT device, a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of this disclosure do not limit the application scenarios. A terminal may also be referred to as a tag, user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc., and the embodiments of this disclosure do not limit this to these terms.

[0047] In some embodiments, the base station may be a base station in LTE (Long Term Evolution), LTE-A (Long Term Evolution Advanced), or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system, etc. The base station may include various macro base stations, micro base stations, home base stations, remote radio heads, reconfigurable intelligent surfaces (RISs), routers, relays, transmit receive points (TRPs), WIFI devices, UEs, and other network-side devices. The embodiments of the present disclosure are not limited thereto.

[0048] It should be noted that FIG. 1 is only an exemplary framework diagram. The number of devices included in FIG. 1 and the names of each device are not limited. In addition to the devices shown in FIG. 1, the communication system may further include other devices, such as core network devices. The present disclosure does not limit this.

[0049] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and service scenarios described in the embodiments of the present disclosure are for more clearly explaining the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present disclosure are equally applicable to similar technical problems.

[0050] The embodiments of the present disclosure provide a method for transmitting channel state information, which is applied to a first node. As shown in FIG. 2, the method includes the following steps:

[0051] S101. Receive configuration information.

[0052] S102. Transmit channel state information based on the configuration information.

[0053] Here, the configuration information includes the reporting content of the channel state information and the channel state information reporting frequency band.

[0054] It can be understood that the reporting content of the channel state information is used to indicate the content that the channel state information to be reported should include, and the channel state information reporting frequency band is used to indicate which frequency band's channel state information needs to be reported, so as to ensure the transmission of more important channel state information within limited resources.

[0055] The reporting content of the channel state information includes the indication information of the precoding matrix. The indication information of the precoding matrix is used to indicate the precoding matrix. The indication information of the precoding matrix may be the precoding matrix itself, or a precoding matrix indicator (PMI).

[0056] Here, in the transmitted channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups (or M groups of precoding matrix indication information) according to the frequency domain. The transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups. Here, M is an integer greater than 1.

[0057] In some embodiments, for each of the M instruction information groups, the transmission order of the instruction information group is positively correlated with its corresponding priority. That is, within limited resources, instruction information groups with higher priority are transmitted first.

[0058] In some embodiments, the channel state information reporting frequency band is divided into M frequency domain unit groups, each frequency domain unit group including at least one frequency domain unit within the channel state information reporting frequency band; one of the M indication information groups includes indication information of the precoding matrix corresponding to one frequency domain unit group. That is, it can be understood that the indication information of the precoding matrix is ​​divided into M groups according to the frequency domain, i.e., the channel state information reporting frequency band is divided into M groups, and the indication information of the precoding matrix is ​​divided into M groups according to the M frequency domain units, with each group of frequency domain units corresponding to one set of precoding matrix indication information.

[0059] For example, the channel state information reporting frequency band is divided into M frequency domain unit groups. One approach is that each sub-band of the channel state information reporting frequency band forms a group. Another approach is that the configuration information includes an indication that the channel state information reporting frequency band is divided into M frequency domain unit groups. Yet another approach is that the channel state information report of the first node includes an indication that the channel state information reporting frequency band is divided into M frequency domain unit groups. For example, indicating the group to which each sub-band of the channel state information reporting frequency band belongs, or the group number, in the configuration information or the channel state information report of the first node can be referenced in Table 1 or Table 2.

[0060] Table 1

[0061] Table 2

[0062] For example, the channel state information reporting frequency bands are given by group in the configuration information, or the channel state information reporting frequency bands are given by group in the channel state information report of the first node. For example, the sub-bands or sub-band numbers included in each frequency domain unit group can be indicated in the configuration information or in the channel state information report of the first node, as shown in Table 3 or Table 4.

[0063] Table 3

[0064] Table 4

[0065] Another approach is to group the channel state information (CSI) reporting frequency band into M groups, where K consecutive subbands form a group. Here, K is a positive integer. K is indicated by configuration information; alternatively, the CSI reporting includes an indication of K. For example, if the subband numbers in the CSI reporting frequency band are {0,1,2,3,4,5,6,7,8}, and three consecutive subbands form a group, then the CSI reporting frequency band is divided into 3 groups; group 0 includes subbands {0,1,2}; group 1 includes subbands {3,4,5}; and group 2 includes subbands {6,7,8}.

[0066] Understandably, when wireless resources are scarce, the corresponding channel state information can be discarded in groups of K subbands. This allows for precise control of the number of discarded subbands and facilitates reception and demodulation by the second node, thereby reducing system complexity.

[0067] Since the processing capacity of the first node is limited, it cannot generate precoding matrix indication information with excessively large bandwidth at once. Dividing the precoding matrix indication information into M groups according to the frequency domain reduces the bandwidth of each frequency unit relative to the channel state information reporting bandwidth, thereby reducing the complexity of generating the precoding matrix indication information. Different frequency unit groups have varying degrees of importance, or the importance of the precoding matrix indication information in different groups differs. Therefore, a priority ranking is assigned to each group, and the precoding matrix indication information of each group is transmitted sequentially according to its priority, or sequentially or sequentially in the channel state information report according to its priority. When radio resources are insufficient, the precoding matrix indication information of lower priority groups, or groups that should be transmitted later, or groups ranked lower in the report, is discarded first. This ensures reliable transmission of the indication information of important groups, guaranteeing that the second communication node obtains important channel state information, thus improving data transmission efficiency. The frequency domain unit here can be a sub-band or a CQI sub-band, a resource block, or other frequency domain units, and this disclosure does not impose any restrictions on it.

[0068] In some embodiments, the priority of each of the M indication information groups is determined according to at least one of the following: the sequence number of each of the M indication information groups, the sequence number of the frequency domain unit group corresponding to each of the M indication information groups, and the channel quality indicator (CQI) representing the frequency domain unit group corresponding to each of the M indication information groups.

[0069] For example, the priority of each of the M indication information groups is determined based on the sequence number of each of the M indication information groups or the sequence number of the frequency domain unit group corresponding to each of the M indication information groups. This includes the following methods.

[0070] Method 1: The lower-order indication information group has a higher priority than the higher-order indication information group. Method 2: The higher-order indication information group has a higher priority than the lower-order indication information group. Method 3: The configuration information indicates the priority order of each indication information group. Method 4: The first node indicates the priority order of each indication information group in its channel status information report. Method 5: The candidate methods include Method 1 and Method 2; the configuration information indicates one method from the candidate methods. Method 6: The candidate methods include Method 1 and Method 7; the first node indicates one method from the candidate methods in its channel status information report. Here, the sequence number can be the sequence number of the indication information group or the sequence number of the frequency domain unit group corresponding to the indication information group.

[0071] In this way, the priority of each indication information group can be determined flexibly and easily based on the sequence number of each indication information group or the sequence number of the frequency domain unit group corresponding to each indication information group, thereby efficiently determining the priority and reducing the complexity of the system.

[0072] In some embodiments, the priority of each of the M indication information groups is determined based on the CQI representation of the frequency domain unit group corresponding to each of the M indication information groups.

[0073] In some embodiments, the frequency domain unit group's characterization CQI is one of the following:

[0074] CQI of the frequency domain unit group;

[0075] The average CQI of each frequency unit within the frequency unit group;

[0076] The maximum CQI value for each frequency unit within a frequency unit group;

[0077] The minimum CQI value of each frequency unit within the frequency unit group;

[0078] CQI of the lowest frequency unit within a frequency domain unit group;

[0079] The CQI of the highest frequency unit within the frequency domain unit group;

[0080] The median of CQI for each frequency unit within the frequency unit group.

[0081] In some embodiments, for each of the M indication information groups, the priority of the indication information group and the CQI representation of the frequency domain unit group corresponding to the indication information group are positively correlated.

[0082] Here, the Channel Quality Index (CQI) of a frequency unit group represents the channel quality of that group. A larger CQI value indicates better channel quality and higher priority for the corresponding indication information group; conversely, a smaller CQI value indicates poorer channel quality and lower priority for the corresponding indication information group. Determining the priority order of the indication information for each precoding matrix group based on its CQI ensures that the indication information of the precoding matrix from frequency unit groups with good channel quality is transmitted first. This guarantees that the second communication node can obtain the precoding matrix information from these high-quality frequency unit groups first, thus scheduling data transmission on those high-quality frequency units and improving data transmission efficiency.

[0083] In some embodiments, the characterization CQI of the frequency domain unit group is obtained from the candidate CQI types.

[0084] For example, the configuration information indicates the representation CQI for the frequency domain unit group from the candidate CQI types. That is, the configuration information selects a representation CQI for the frequency domain unit group from the candidate representation CQI methods.

[0085] For example, the first node indicates the representation CQI of the frequency domain unit group from the candidate CQI types in the channel state information report. That is, the first communication node selects a representation CQI for the frequency domain unit group from the candidate representation CQI methods in the channel state information report.

[0086] For example, the order of the frequency domain unit group's characteristic CQI from high to low corresponds to the order of the indicator information group's priority from high to low. Thus, a higher characteristic CQI value for the frequency domain unit group corresponding to the indicator information group means better channel conditions for that group, assigning it a higher priority ensures transmission and allows it to be used preferentially, thereby improving data transmission efficiency.

[0087] For example, as shown in Table 5, the first row is the frequency domain unit group number, and the second row is the CQI value representing the corresponding frequency domain unit group.

[0088] Table 5

[0089] Based on the descending order of the CQI representations of the frequency domain unit groups corresponding to the indication information groups, the priority order of each indication information group is determined from high to low. As shown in Table 6, the priority order of the indication information groups from high to low is: the indication information group corresponding to frequency domain unit group 1, the indication information group corresponding to frequency domain unit group 2, the indication information group corresponding to frequency domain unit group 0, and the indication information group corresponding to frequency domain unit group 3.

[0090] Table 6

[0091] Understandably, sometimes multiple frequency domain unit groups may have the same CQI. In such cases, it is necessary to design the priority between these frequency domain unit groups so that they can be transmitted in an orderly manner and different nodes have a consistent understanding of their transmission order to avoid misunderstandings.

[0092] In some embodiments, for each of at least two indicator information groups whose corresponding frequency domain unit groups have the same CQI among the M indicator information groups, the priority of the indicator information group and the index of the indicator information group or the index of the frequency domain unit group corresponding to the indicator information group are negatively or positively correlated.

[0093] Here, for each of at least two indicator information groups among the M indicator information groups whose corresponding frequency domain unit groups represent equal CQI, the priority of the indicator information group is negatively correlated with the index of the indicator information group or the index of the corresponding frequency domain unit group. That is, for each of the M indicator information groups among the M indicator information groups whose corresponding frequency domain unit groups represent equal CQI, the indicator information group with a smaller index or the indicator information group with a smaller index of its corresponding frequency domain unit group has a higher priority. Thus, designing the priority of frequency domain unit groups representing equal CQI according to this rule can solve this problem and reduce the complexity of the system.

[0094] For each of at least two instruction information groups among M instruction information groups whose corresponding frequency domain unit groups represent equal CQI, the priority of the instruction information group is positively correlated with the index of the instruction information group or the index of the corresponding frequency domain unit group. That is, for each of at least two instruction information groups among M instruction information groups whose corresponding frequency domain unit groups represent equal CQI, the instruction information group with a larger index or the instruction information group with a larger index of its corresponding frequency domain unit group has higher priority. Therefore, designing the priority of frequency domain unit groups representing equal CQI according to this rule can solve this problem and reduce the complexity of the system.

[0095] In some embodiments, the channel state information report may also include a channel quality indicator (CQI).

[0096] In some embodiments, the configuration information indicates that the CQI in the channel state information should include wideband CQI. In some embodiments, the configuration information indicates that the CQI in the channel state information should include subband CQI. In some embodiments, the configuration information indicates that the CQI in the channel state information should include both wideband and subband CQI. In some embodiments, the configuration information indicates that the channel state information includes CQI, but does not specify which type of CQI; the specific type of CQI is determined by the first node.

[0097] In some embodiments, the channel state information includes information indicating the characterization CQI of each of the M frequency domain unit groups. For each of the M frequency domain unit groups, the order in which the characterization CQI of the frequency domain unit group is indicated in the channel state information is positively correlated with the sequence number of the frequency domain unit group or the sequence number of the corresponding indication information group. The priority of each indication information group among the M indication information groups is determined based on the characterization CQI of the frequency domain unit group corresponding to each indication information group. This can be understood as the first node indicating the characterization CQI of each frequency domain unit group in the channel state information report in ascending order according to the sequence number of the frequency domain unit group or the sequence number of the indication information group, and the priority order of each indication information group among the M indication information groups is determined according to the characterization CQI of the frequency domain unit group corresponding to each indication information group.

[0098] In this way, by indicating the representation CQI of each frequency domain unit group in a fixed order, both parties in the communication can have a consistent understanding of which frequency domain unit group the CQI corresponds to. Thus, by determining the priority order of each indication information group in the M indication information groups according to the representation CQI of each indication information group, both parties in the communication can have a consistent understanding.

[0099] For example, as shown in Table 7, the first row is the frequency domain unit group number, and the second row is the CQI value representing the corresponding frequency domain unit group.

[0100] Table 7

[0101] Based on the CQI representation of the corresponding frequency domain unit groups from high to low, the priority of each indication information group is determined from high to low. As shown in Table 8, the priority order of the indication information groups from high to low is: indication information group corresponding to frequency domain unit group 1, indication information group corresponding to frequency domain unit group 2, indication information group corresponding to frequency domain unit group 0, and indication information group corresponding to frequency domain unit group 3.

[0102] Table 8

[0103] In some embodiments, the channel state information is determined based on at least one of the following: the order of the sequence numbers of each frequency domain unit group in the M frequency domain unit groups, the order of the representation CQI of each frequency domain unit group in the M frequency domain unit groups, and the order of the representation CQI of each indication information group in the M indication information groups.

[0104] In this way, the first node, based on the priority order determined by the characterization CQI of each frequency unit group in the channel state information report, indicates the sequence number of each frequency unit group, the characterization CQI of each frequency unit group, and the indication information of the corresponding precoding matrix for each frequency unit group (each indication information group in M ​​indication information groups). The order of the sequence numbers of each frequency unit group, the order of the characterization CQI of each frequency unit group, and the order of the indication information of the corresponding precoding matrix for each frequency unit group are all the same. Based on the order of the indicated sequence numbers of each frequency unit group, the node can determine the frequency unit group corresponding to the indicated characterization CQI and the indication information of the precoding matrix. Therefore, when resources are scarce and some frequency unit group CQIs or precoding matrix indication information are discarded, the second communication node can know which frequency unit groups the transmitted CQI and precoding matrix indication information correspond to.

[0105] In some embodiments, the channel state information is reported in the following order: the sequence number of each frequency unit group in the M frequency unit groups, the characterization CQI of each frequency unit group in the M frequency unit groups, and M indication information groups. This can be understood as the order in which the indications in the channel state information are: the sequence number of each frequency unit group, the characterization CQI of each frequency unit group, and the indication information of the precoding matrix of each frequency unit group.

[0106] In some embodiments, the channel state information report includes M segments, each segment corresponding to one of the M frequency domain unit groups. Each segment includes the sequence number of the frequency domain unit group to which the segment corresponds, the characterization CQI of the frequency domain unit group to which the segment corresponds, and the indication information of the precoding matrix corresponding to the frequency domain unit group to which the segment corresponds. The transmission order of the M segments is determined based on the characterization CQI of the frequency domain unit group to which the M segments correspond.

[0107] For example, in order of priority, the following segments are transmitted in the Channel State Information Report: Segment 1, Segment 2, ..., Segment M; here, Segment 1 includes the sequence number of the frequency domain unit group corresponding to Segment 1, the characterization CQI of the frequency domain unit group corresponding to Segment 1, and the indication information of the precoding matrix of the frequency domain unit group corresponding to Segment 1; these will not be elaborated further; here, Segment M includes the sequence number of the frequency domain unit group corresponding to Segment M, the characterization CQI of the frequency domain unit group corresponding to Segment M, and the indication information of the precoding matrix of the frequency domain unit group corresponding to Segment M.

[0108] When radio resources for transmitting channel state information are scarce, low-priority segments or segments that should be transmitted later are discarded. This avoids transmitting the frequency unit group (FMU) index of the same segment while discarding the corresponding CQI or precoding matrix indication information, rendering the transmitted FMU index useless and wasting transmission resources; or transmitting the corresponding CQI of the same segment while discarding the corresponding CQI or precoding matrix indication information, rendering the transmitted CQI useless and wasting transmission resources; or transmitting the precoding matrix indication information of the same segment while discarding the precoding matrix indication information or the corresponding CQI of the same segment, rendering the transmitted precoding matrix indication information useless and wasting transmission resources. If the transmitted content is useless, it constitutes resource waste.

[0109] In some embodiments, at least M-1 frequency domain unit groups among the M frequency domain unit groups include K frequency domain units with consecutive sequence numbers in the channel state information reporting frequency band, where K is a positive integer.

[0110] In some embodiments, among the M frequency domain unit groups, there are M frequency domain unit groups that include K frequency domain units with consecutive serial numbers in the channel state information reporting frequency band, where K is a positive integer.

[0111] For example, based on the frequency domain unit indices in the channel state information reporting band, K consecutive frequency domain units are grouped together, and the channel state information reporting band is divided into M groups. Here, the priority order of the indication information of the precoding matrix corresponding to the M frequency domain unit groups is determined according to the characterization CQI of each frequency domain unit group. It can be understood that under this grouping method, the number of frequency domain units included in the channel state information reporting band is divisible by K.

[0112] For example, for each of the M frequency domain unit groups, the priority of the indication information of the precoding matrix corresponding to that frequency domain unit group is positively correlated with the CQI characterization of that frequency domain unit group. That is, the order of priority of the indication information of the precoding matrix corresponding to the frequency domain unit group from high to low corresponds to the order of CQI characterization of each frequency domain unit group from high to low.

[0113] For example, frequency domain unit group 0 includes: frequency domain unit 0, frequency domain unit 1, ..., frequency domain unit K-1;

[0114] Frequency domain unit group 1 includes: frequency domain unit K+0, frequency domain unit K+1, ..., frequency domain unit 2K-1;

[0115] ...;

[0116] The frequency domain unit group M includes: frequency domain unit (M-1)K+0, frequency domain unit (M-1)K+1, ..., frequency domain unit (M-1)K-1.

[0117] In this way, grouping K consecutive frequency units together ensures that each group of frequency units has the same number of frequency units, thus enabling the first node to process groups of frequency units with the same number of frequency units, reducing the complexity of the system.

[0118] In some cases, the channel state information reporting band includes N frequency domain units, corresponding to N not being divisible by K, and the last group of frequency domain units consists of the last K frequency domain units in the channel state information reporting band.

[0119] For example, frequency domain unit group 0 includes: frequency domain unit 0, frequency domain unit 1, ..., frequency domain unit K-1;

[0120] Frequency domain unit group 1 includes: frequency domain unit K+0, frequency domain unit K+1, ..., frequency domain unit 2K-1;

[0121] ...;

[0122] The frequency domain unit group M-1 includes: frequency domain unit (M-2)K+0, frequency domain unit (M-2)K+1, ..., frequency domain unit (M-2)K-1;

[0123] The frequency domain unit group M includes: frequency domain unit NK, frequency domain unit N-K+1, ..., frequency domain unit N-1.

[0124] In some embodiments, if only M-1 frequency domain unit groups among the M frequency domain unit groups include K frequency domain units with consecutive sequence numbers in the channel state information reporting frequency band, then one frequency domain unit group among the M frequency domain unit groups includes L frequency domain units, where L is the remainder of K divided by N, N is the total number of frequency domain units included in the channel state information reporting frequency band, and N is a positive integer.

[0125] For example, frequency domain unit group 0 includes: frequency domain unit 0, frequency domain unit 1, ..., frequency domain unit K-1;

[0126] Frequency domain unit group 1 includes: frequency domain unit K+0, frequency domain unit K+1, ..., frequency domain unit 2K-1;

[0127] ...;

[0128] The frequency domain unit group M-1 includes: frequency domain unit (M-2)K+0, frequency domain unit (M-2)K+1, ..., frequency domain unit (M-2)K-1;

[0129] The frequency domain unit group M includes: frequency domain unit NL, frequency domain unit N-L+1, ..., frequency domain unit N-1, ..., frequency domain unit N-1; here, the last frequency domain unit N-1 is filled to the frequency domain unit group M, which includes K frequency domain units.

[0130] In some embodiments, for the N frequency domain units included in the channel state information reporting frequency band, the N frequency domain units are sorted according to their serial numbers in ascending order; according to the sorting order, K consecutive frequency domain units are divided into a frequency domain unit group, and each frequency domain unit group includes different frequency domain units, resulting in M ​​frequency domain unit groups.

[0131] Here, when K divides N, each of the M frequency unit groups includes K frequency units; when K does not divide N, the first M-1 frequency unit groups include K frequency units, and the Mth frequency unit group includes L frequency units, where L is the remainder of K divided by N, and N is a positive integer.

[0132] In some embodiments, the frequency domain units contained in each of the M frequency domain unit groups have the same remainder when divided by M.

[0133] For example, the frequency units within the channel state information reporting band are grouped according to the remainder when the index of each frequency unit is divided by M. Frequency units with the same remainder belong to the same group. The channel state information reporting band is divided into M groups, where the priority order of the indication information of the precoding matrix of the M frequency unit groups is determined according to the characterization CQI of each frequency unit group.

[0134] For example, frequency domain unit 0, frequency domain unit M, ..., frequency domain unit (K-1)M form frequency domain unit group 0;

[0135] Frequency domain unit 1, frequency domain unit M+1, ..., frequency domain unit (K-1)M+1 form frequency domain unit group 1;

[0136] ...;

[0137] Frequency domain unit M-1, frequency domain unit 2M-1, ..., frequency domain unit KM-1 form frequency domain unit group M-1.

[0138] In this way, the frequency domain units are grouped according to the remainder when the index is divided by M, and the frequency domain units with the same remainder belong to the same group. This makes the channel conditions of each group similar and reduces the channel differences between groups. In the case of scarce radio resources, the indication information of the precoding matrix of the frequency domain unit group with poor channel conditions is discarded, ensuring that the information of the precoding matrix of the frequency domain unit group with high channel quality is obtained and the channel quality of the obtained frequency domain unit groups is similar.

[0139] In some embodiments, the channel state information includes the CQI of each frequency unit in the channel state information reporting band, and each of the M frequency unit groups contains K consecutive frequency units in a frequency unit sequence. The frequency unit sequence is obtained by arranging each frequency unit in the channel state information reporting band based on the CQI value of each frequency unit in the channel state information reporting band, where K is a positive integer.

[0140] In some embodiments, for the N frequency domain units included in the channel state information reporting frequency band, the N frequency domain units are sorted in descending order of their CQI values. Following this sorting order, K consecutive frequency domain units are sequentially divided into frequency domain unit groups, each group containing a different number of frequency domain units, resulting in M ​​frequency domain unit groups. Here, if K is divisible by N, each of the M frequency domain unit groups contains K frequency domain units; if K is not divisible by N, the first M-1 frequency domain unit groups contain K frequency domain units, and the Mth frequency domain unit group contains L frequency domain units, where L is the remainder of K divided by N, and N is a positive integer.

[0141] In some embodiments, the priority of each indication information group in the M indication information groups is determined based on the characterization CQI of the frequency domain unit group corresponding to each of the M indication information groups.

[0142] In some embodiments, for each of the M indication information groups, the priority of the indication information group is negatively correlated with the sequence number of the frequency domain unit group corresponding to the indication information group.

[0143] For example, the first node reports the CQI of each frequency unit in the channel state information reporting frequency band in the channel state information report. The channel state information reporting frequency band is divided into M groups. Here, frequency units with similar CQI values ​​in the channel state information reporting frequency band are grouped into the same group. The priority order of each indication information group in the M indication information groups is determined according to the characteristic CQI of each frequency unit group.

[0144] For example, as shown in Table 9, the first row represents the sequence number of each frequency domain unit in the channel state information reporting band, and the second row represents the CQI value corresponding to each frequency domain unit.

[0145] Table 9

[0146] Based on the CQI values ​​of each frequency unit in the Channel State Information Reporting Band, frequency units with similar CQI values ​​are grouped together. As shown in Table 10, for the 12 frequency units included in the Channel State Information Reporting Band, the 12 frequency units are sorted in descending order of their CQI values. Following this sorting order, four consecutive frequency units are grouped into a single frequency unit group. Each frequency unit group contains a different number of frequency units, resulting in three frequency unit groups. The group numbers are arranged in ascending order.

[0147] Table 10

[0148] For example, the channel state information reporting frequency band is divided into M groups, with K consecutive frequency units in descending order of CQI in each frequency unit according to the CQI of each group. The priority order of the M indication information groups is determined according to the CQI of each group.

[0149] For example, the channel state information reporting frequency band is divided into M groups based on the CQI of each frequency unit in the frequency domain unit in descending order. The sequence numbers of the M frequency domain unit groups are in ascending order. Here, the priority order of the M indication information groups is the ascending order of the sequence numbers of the M frequency domain unit groups.

[0150] Based on this, the content and frequency band of the channel state information (CSO) report can be clearly defined by configuring information indicators. Here, the indication information for the precoding matrix included in the CSO is divided into M indication information groups according to the frequency domain. The transmission order of the M indication information groups is determined based on the priority of each indication information group within the M groups. This strategy ensures that more important CSO information is transmitted within limited resources, thereby improving the reliability of CSO transmission.

[0151] This disclosure provides a channel state information transmission method applied to a second node. As shown in Figure 3, the method includes the following steps:

[0152] S201. Send configuration information.

[0153] S202, Receive channel status information.

[0154] Here, the channel state information is determined based on the configuration information. The configuration information includes the report content and frequency band of the channel state information. The report content of the channel state information includes the indication information of the precoding matrix. In the received channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain. The transmission order of the M indication information groups is determined based on the priority of each indication information group within the M groups. Here, M is an integer greater than 1.

[0155] In some embodiments, the channel state information reporting band is divided into M frequency domain unit groups, and each frequency domain unit group includes at least one frequency domain unit within the channel state information reporting band. One of the M indication information groups includes indication information for the precoding matrix corresponding to one frequency domain unit group.

[0156] In some embodiments, the priority of each of the M indication information groups is determined according to at least one of the following: the sequence number of each of the M indication information groups, the sequence number of the frequency domain unit group corresponding to each of the M indication information groups, and the channel quality indicator (CQI) representing the frequency domain unit group corresponding to each of the M indication information groups.

[0157] In some embodiments, the characterization CQI of the frequency domain unit group is obtained from the candidate CQI types.

[0158] In some embodiments, the frequency domain unit group's characterization CQI is one of the following:

[0159] CQI of the frequency domain unit group;

[0160] The average CQI of each frequency unit within the frequency unit group;

[0161] The maximum CQI value for each frequency unit within a frequency unit group;

[0162] The minimum CQI value of each frequency unit within the frequency unit group;

[0163] CQI of the lowest frequency unit within a frequency domain unit group;

[0164] The CQI of the highest frequency unit within the frequency domain unit group;

[0165] The median of CQI for each frequency unit within the frequency unit group.

[0166] In some embodiments, for each of the M indication information groups, the priority of the indication information group and the CQI representation of the frequency domain unit group corresponding to the indication information group are positively correlated.

[0167] In some embodiments, for each of at least two indicator information groups whose corresponding frequency domain unit groups have the same CQI among the M indicator information groups, the priority of the indicator information group and the index of the indicator information group or the index of the frequency domain unit group corresponding to the indicator information group are negatively or positively correlated.

[0168] In some embodiments, the channel state information also includes CQI.

[0169] In some embodiments, the channel state information includes information indicating the characterization CQI of each of the M frequency domain unit groups. For each of the M frequency domain unit groups, the order in which the characterization CQI of the frequency domain unit group is indicated in the channel state information is positively correlated with the sequence number of the frequency domain unit group or the sequence number of the corresponding indication information group. The priority of each indication information group among the M indication information groups is determined based on the characterization CQI of the frequency domain unit group corresponding to each of the M indication information groups.

[0170] In some embodiments, the channel state information is determined based on at least one of the following: the order of the sequence numbers of each frequency domain unit group in the M frequency domain unit groups, the order of the representation CQI of each frequency domain unit group in the M frequency domain unit groups, and the order of the representation CQI of each indication information group in the M indication information groups.

[0171] In some embodiments, the order of the channel state information reporting content is as follows: the sequence number of each frequency domain unit group in the M frequency domain unit groups, the characterization CQI of each frequency domain unit group in the M frequency domain unit groups, and the M indication information groups.

[0172] In some embodiments, the channel state information report includes M segments, each segment corresponding to one of the M frequency domain unit groups. Each segment includes the sequence number of the frequency domain unit group to which the segment belongs, the characterization CQI of the frequency domain unit group to which the segment belongs, and the indication information of the precoding matrix corresponding to the frequency domain unit group to which the segment belongs. The transmission order of the M segments is determined based on the characterization CQI of the frequency domain unit groups to which the M segments belong.

[0173] In some embodiments, at least M-1 frequency domain unit groups among the M frequency domain unit groups include K frequency domain units with consecutive sequence numbers in the channel state information reporting frequency band, where K is a positive integer.

[0174] In some embodiments, if only M-1 frequency domain unit groups among the M frequency domain unit groups include K frequency domain units with consecutive sequence numbers in the channel state information reporting frequency band, then one frequency domain unit group among the M frequency domain unit groups includes L frequency domain units, where L is the remainder of K divided by N, N is the total number of frequency domain units included in the channel state information reporting frequency band, and N is a positive integer.

[0175] In some embodiments, for the N frequency domain units included in the channel state information reporting frequency band, the N frequency domain units are sorted according to their serial numbers in ascending order; according to the sorting order, K consecutive frequency domain units are divided into a frequency domain unit group, and each frequency domain unit group includes different frequency domain units, resulting in M ​​frequency domain unit groups.

[0176] Here, when K divides N evenly, each of the M frequency unit groups comprises K frequency units. When K does not divide N evenly, the first M-1 frequency unit groups comprise K frequency units, and the Mth frequency unit group comprises L frequency units, where L is the remainder of K divided by N, and N is a positive integer.

[0177] In some embodiments, the frequency domain units contained in each of the M frequency domain unit groups have the same remainder when divided by M.

[0178] In some embodiments, the channel state information includes the CQI of each frequency unit in the channel state information reporting band, and each of the M frequency unit groups contains K consecutive frequency units in a frequency unit sequence. The frequency unit sequence is obtained by arranging each frequency unit in the channel state information reporting band based on the CQI value of each frequency unit in the channel state information reporting band, where K is a positive integer.

[0179] In some embodiments, for the N frequency domain units included in the channel state information reporting frequency band, the N frequency domain units are sorted in descending order of their CQI values; according to the sorting order, K consecutive frequency domain units are divided into a frequency domain unit group, and each frequency domain unit group includes different frequency domain units, resulting in M ​​frequency domain unit groups.

[0180] Here, when K divides N evenly, each of the M frequency unit groups comprises K frequency units. When K does not divide N evenly, the first M-1 frequency unit groups comprise K frequency units, and the Mth frequency unit group comprises L frequency units, where L is the remainder of K divided by N, and N is a positive integer.

[0181] In some embodiments, the priority of each indication information group in the M indication information groups is determined based on the characterization CQI of the frequency domain unit group corresponding to each of the M indication information groups.

[0182] In some embodiments, for each of the M indication information groups, the priority of the indication information group is negatively correlated with the sequence number of the frequency domain unit group corresponding to the indication information group.

[0183] For a more detailed description of S201-S202 above, as well as a more detailed description of each technical feature therein, and a description of the beneficial effects, please refer to the description in the above embodiments or examples, which will not be repeated here.

[0184] The foregoing mainly describes the solutions of the embodiments of this disclosure from a methodological perspective. The following also illustrates a channel state information transmission apparatus for executing the channel state information transmission method in any of the above embodiments and their possible implementations. It is understood that the channel state information transmission apparatus, in order to implement the channel state information transmission method, includes hardware structures and / or software modules corresponding to the execution of various functions; those skilled in the art should readily recognize that, in conjunction with the algorithm steps of the various examples described in the embodiments of this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a certain function is executed in hardware or by computer software driving hardware depends on the target application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each target application, but such implementation should not be considered beyond the scope of this disclosure.

[0185] This disclosure embodiment can divide the channel state information transmission device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0186] Figure 4 is a block diagram of a channel state information transmission device according to some embodiments, applied to a first node. The channel state information transmission device 30 includes: a first communication module 31 and a second communication module 32.

[0187] Here, the first communication module 31 is used to receive configuration information;

[0188] The second communication module 32 is used to send channel status information based on configuration information;

[0189] Here, the configuration information includes the report content of the channel state information and the channel state information reporting frequency band; the report content of the channel state information includes the indication information of the precoding matrix; in the transmitted channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain, and the transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups; here M is an integer greater than 1.

[0190] In some embodiments, the channel state information reporting frequency band is divided into M frequency domain unit groups, and each frequency domain unit group includes at least one frequency domain unit within the channel state information reporting frequency band; one of the M indication information groups includes indication information of the precoding matrix corresponding to one frequency domain unit group.

[0191] In some embodiments, the priority of each of the M indication information groups is determined according to at least one of the following: the sequence number of each of the M indication information groups, the sequence number of the frequency domain unit group corresponding to each of the M indication information groups, and the channel quality indicator (CQI) representing the frequency domain unit group corresponding to each of the M indication information groups.

[0192] In some embodiments, the characterization CQI of the frequency domain unit group is obtained from the candidate CQI types.

[0193] In some embodiments, the frequency domain unit group's characterization CQI is one of the following:

[0194] CQI of the frequency domain unit group;

[0195] The average CQI of each frequency unit within the frequency unit group;

[0196] The maximum CQI value for each frequency unit within a frequency unit group;

[0197] The minimum CQI value of each frequency unit within the frequency unit group;

[0198] CQI of the lowest frequency unit within a frequency domain unit group;

[0199] The CQI of the highest frequency unit within the frequency domain unit group;

[0200] The median of CQI for each frequency unit within the frequency unit group.

[0201] In some embodiments, for each of the M indication information groups, the priority of the indication information group and the CQI representation of the frequency domain unit group corresponding to the indication information group are positively correlated.

[0202] In some embodiments, for each of at least two indicator information groups whose corresponding frequency domain unit groups have the same CQI among the M indicator information groups, the priority of the indicator information group and the index of the indicator information group or the index of the frequency domain unit group corresponding to the indicator information group are negatively or positively correlated.

[0203] In some embodiments, the channel state information also includes CQI.

[0204] In some embodiments, the channel state information includes information indicating the characterization CQI of each of the M frequency domain unit groups; for each of the M frequency domain unit groups, the order in which the characterization CQI of the frequency domain unit group is indicated in the channel state information is positively correlated with the sequence number of the frequency domain unit group or the sequence number of the indication information group corresponding to the frequency domain unit group; the priority of each indication information group in the M indication information groups is determined based on the characterization CQI of the frequency domain unit group corresponding to each of the M indication information groups.

[0205] In some embodiments, the channel state information is determined based on at least one of the following: the order of the sequence numbers of each frequency domain unit group in the M frequency domain unit groups, the order of the representation CQI of each frequency domain unit group in the M frequency domain unit groups, and the order of the representation CQI of each indication information group in the M indication information groups.

[0206] In some embodiments, the order of the channel state information reporting content is as follows: the sequence number of each frequency domain unit group in the M frequency domain unit groups, the characterization CQI of each frequency domain unit group in the M frequency domain unit groups, and the M indication information groups.

[0207] In some embodiments, the channel state information report includes M segments, each segment corresponding to one of the M frequency domain unit groups. Each segment includes the sequence number of the frequency domain unit group to which the segment corresponds, the characterization CQI of the frequency domain unit group to which the segment corresponds, and the indication information of the precoding matrix corresponding to the frequency domain unit group to which the segment corresponds. The transmission order of the M segments is determined based on the characterization CQI of the frequency domain unit group to which the M segments correspond.

[0208] In some embodiments, at least M-1 frequency domain unit groups among the M frequency domain unit groups include K frequency domain units with consecutive sequence numbers in the channel state information reporting frequency band, where K is a positive integer.

[0209] In some embodiments, if only M-1 frequency domain unit groups among the M frequency domain unit groups include K frequency domain units with consecutive sequence numbers in the channel state information reporting frequency band, then one frequency domain unit group among the M frequency domain unit groups includes L frequency domain units, where L is the remainder of K divided by N, N is the total number of frequency domain units included in the channel state information reporting frequency band, and N is a positive integer.

[0210] In some embodiments, for the N frequency domain units included in the channel state information reporting frequency band, the N frequency domain units are sorted according to their serial numbers in ascending order; according to the sorting order, K consecutive frequency domain units are divided into a frequency domain unit group, and each frequency domain unit group includes different frequency domain units, resulting in M ​​frequency domain unit groups.

[0211] Here, when K divides N, each of the M frequency unit groups includes K frequency units; when K does not divide N, the first M-1 frequency unit groups include K frequency units, and the Mth frequency unit group includes L frequency units, where L is the remainder of K divided by N, and N is a positive integer.

[0212] In some embodiments, the frequency domain units contained in each of the M frequency domain unit groups have the same remainder when divided by M.

[0213] In some embodiments, the channel state information includes the CQI of each frequency unit in the channel state information reporting band, and each frequency unit group in the M frequency unit groups contains K consecutive frequency units in the frequency unit sequence; the frequency unit sequence is obtained by arranging each frequency unit in the channel state information reporting band based on the CQI value of each frequency unit in the channel state information reporting band, where K is a positive integer.

[0214] In some embodiments, for the N frequency domain units included in the channel state information reporting frequency band, the N frequency domain units are sorted in descending order of their CQI values; according to the sorting order, K consecutive frequency domain units are divided into a frequency domain unit group, and each frequency domain unit group includes different frequency domain units, resulting in M ​​frequency domain unit groups.

[0215] Here, when K divides N, each of the M frequency unit groups includes K frequency units; when K does not divide N, the first M-1 frequency unit groups include K frequency units, and the Mth frequency unit group includes L frequency units, where L is the remainder of K divided by N, and N is a positive integer.

[0216] In some embodiments, the priority of each indication information group in the M indication information groups is determined based on the characterization CQI of the frequency domain unit group corresponding to each of the M indication information groups.

[0217] In some embodiments, for each of the M indication information groups, the priority of the indication information group is negatively correlated with the sequence number of the frequency domain unit group corresponding to the indication information group.

[0218] Figure 5 is a block diagram of a channel state information transmission device according to some embodiments, applied to a second node. The channel state information transmission device 40 includes: a first communication module 41 and a second communication module 42.

[0219] Here, the first communication module 41 is used to send configuration information;

[0220] The second communication module 42 is used to receive channel status information;

[0221] Here, the channel state information is determined based on the configuration information; the configuration information includes the report content of the channel state information and the report frequency band of the channel state information; the report content of the channel state information includes the indication information of the precoding matrix; in the received channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain, and the transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups; here M is an integer greater than 1.

[0222] For a more detailed description of the first communication module 41 and the second communication module 42, as well as a more detailed description of the various technical features and the beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0223] It should be noted that the modules in Figures 4 and 5 can also be called units; for example, a communication module can be called a communication unit. Furthermore, in the embodiments shown in Figures 4 and 5, the names of the modules may not be those shown in the figures; for example, a communication module can also be called a transmitting module or a receiving module.

[0224] If the units or modules in Figures 4 and 5 are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to related technologies, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0225] In implementing the functions of the integrated modules described above in hardware, this disclosure also provides a possible structure for a communication device used to execute the channel state information transmission method provided in this disclosure. As shown in FIG6, the communication device 500 includes: a communication interface 503, a processor 502, and a bus 504. In some embodiments, the communication device may further include a memory 501.

[0226] Processor 502 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 502 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 502 may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a digital signal processor (DSP), and a microprocessor, etc.

[0227] Communication interface 503 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0228] The memory 501 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0229] In some embodiments, the memory 501 may exist independently of the processor 502. The memory 501 may be connected to the processor 502 via a bus 504 and may be used to store instructions or program code. When the processor 502 calls and executes the instructions or program code stored in the memory 501, it can implement the channel state information transmission method provided in the embodiments of this disclosure.

[0230] In other embodiments, memory 501 may also be integrated with processor 502.

[0231] Bus 504 can be an extended industry standard architecture (EISA) bus, etc. Bus 504 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 6, but this does not mean that there is only one bus or one type of bus.

[0232] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the channel state information transmission method as described in any of the above embodiments.

[0233] In some embodiments, the computer may be the aforementioned channel state information transmission device, and this disclosure does not limit the specific form of the computer.

[0234] In some examples, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0235] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to execute the channel state information transmission method described in any of the above embodiments.

[0236] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for transmitting channel state information, wherein, Applied to the first node, the method includes: Receive configuration information; Channel status information is sent based on the configuration information; The configuration information includes the report content of channel state information and the report frequency band of channel state information; the report content of channel state information includes the indication information of the precoding matrix; in the transmitted channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain, and the transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups; where M is an integer greater than 1.

2. The method according to claim 1, wherein, The channel state information reporting frequency band is divided into M frequency domain unit groups, and each frequency domain unit group includes at least one frequency domain unit within the channel state information reporting frequency band; one of the M indication information groups includes indication information of the precoding matrix corresponding to one of the frequency domain unit groups.

3. The method according to claim 2, wherein, The priority of each of the M indication information groups is determined according to at least one of the following: the sequence number of each indication information group in the M indication information groups, the sequence number of the frequency domain unit group corresponding to each of the M indication information groups, and the channel quality indicator (CQI) representing the frequency domain unit group corresponding to each of the M indication information groups.

4. The method according to claim 3, wherein, The frequency domain unit group's characterization CQI is obtained from the candidate CQI types.

5. The method according to claim 3, wherein, The frequency domain unit group is characterized by one of the following: The CQI of the frequency domain unit group; The average CQI of each frequency unit within the frequency unit group; The maximum value of CQI for each frequency unit within the frequency unit group; The minimum CQI of each frequency unit within the frequency unit group; The CQI of the lowest frequency unit within the frequency unit group; The CQI of the highest frequency unit within the frequency unit group; The median of the CQI for each frequency unit within the frequency unit group.

6. The method according to claim 3, wherein, For each of the M indication information groups, the priority of the indication information group and the CQI representation of the frequency domain unit group corresponding to the indication information group are positively correlated.

7. The method according to claim 6, wherein, For each of at least two indicator information groups whose corresponding frequency domain unit groups have the same CQI, the priority of the indicator information group and the ordinal number of the indicator information group or the ordinal number of the frequency domain unit group are negatively or positively correlated.

8. The method according to claim 3, wherein, The channel state information also includes CQI.

9. The method according to claim 8, wherein, The channel state information includes information indicating the characterization CQI of each frequency unit group in the M frequency unit groups; for each frequency unit group in the M frequency unit groups, the order in which the characterization CQI of the frequency unit group is indicated in the channel state information is positively correlated with the sequence number of the frequency unit group or the sequence number of the indication information group corresponding to the frequency unit group; the priority of each indication information group in the M indication information groups is determined based on the characterization CQI of the frequency unit group corresponding to each indication information group in the M indication information groups.

10. The method according to claim 8, wherein, The channel state information is determined based on at least one of the following: the order of the sequence numbers of the frequency unit groups in the M frequency unit groups; the order of the characterization CQI of the frequency unit groups in the M frequency unit groups; and the order of the characterization CQI of the indication information groups in the M indication information groups.

11. The method according to claim 10, wherein, The channel state information report content is ordered as follows: the sequence number of each frequency domain unit group in the M frequency domain unit groups, the characterization CQI of each frequency domain unit group in the M frequency domain unit groups, and the M indication information groups.

12. The method according to claim 10, wherein, The channel state information report includes M segments, each segment corresponding to one of the M frequency domain unit groups. Each segment includes the sequence number of the frequency domain unit group to which the segment corresponds, the characterization CQI of the frequency domain unit group to which the segment corresponds, and the indication information of the precoding matrix corresponding to the frequency domain unit group to which the segment corresponds. The transmission order of the M segments is determined based on the characterization CQI of the frequency domain unit group to which the M segments correspond.

13. The method according to claim 2, wherein, Among the M frequency domain unit groups, at least M-1 frequency domain unit groups include K consecutive frequency domain units in the channel state information reporting frequency band, where K is a positive integer.

14. The method according to claim 13, wherein, If, among the M frequency domain unit groups, only M-1 frequency domain unit groups include K frequency domain units with consecutive sequence numbers in the channel state information reporting frequency band, then one of the M frequency domain unit groups includes L frequency domain units, where L is the remainder of K divided by N, N is the total number of frequency domain units included in the channel state information reporting frequency band, and N is a positive integer.

15. The method according to claim 13, wherein, The method further includes: For the N frequency domain units included in the channel state information reporting frequency band, the N frequency domain units are sorted in ascending order of their index; According to the order of arrangement, K consecutive frequency domain units are divided into a frequency domain unit group, and each frequency domain unit group includes different frequency domain units, resulting in M ​​frequency domain unit groups; Wherein, if K divides N, each of the M frequency domain unit groups includes K frequency domain units; if K does not divide N, the first M-1 frequency domain unit groups of the M frequency domain unit groups include K frequency domain units, and the Mth frequency domain unit group includes L frequency domain units, where L is the remainder of K divided by N, and N is a positive integer.

16. The method according to claim 2, wherein, The frequency units contained in each of the M frequency unit groups have the same remainder when their index is divided by M.

17. The method according to claim 2, wherein, The channel state information includes the CQI of each frequency unit in the channel state information reporting band, and each of the M frequency unit groups contains K consecutive frequency units in the frequency unit sequence. The frequency domain unit sequence is obtained by arranging each frequency domain unit in the channel state information reporting band based on the CQI value of each frequency domain unit in the channel state information reporting band, where K is a positive integer.

18. The method according to claim 17, wherein, The method further includes: For the N frequency domain units included in the channel state information reporting frequency band, the N frequency domain units are sorted in descending order of their CQI values; According to the order of arrangement, K consecutive frequency domain units are divided into a frequency domain unit group, and each frequency domain unit group includes different frequency domain units, resulting in M ​​frequency domain unit groups; Wherein, if K divides N, each of the M frequency domain unit groups includes K frequency domain units; if K does not divide N, the first M-1 frequency domain unit groups of the M frequency domain unit groups include K frequency domain units, and the Mth frequency domain unit group includes L frequency domain units, where L is the remainder of K divided by N, and N is a positive integer.

19. The method of claim 17, wherein, The priority of each of the M indication information groups is determined based on the CQI representation of the frequency domain unit group corresponding to each of the M indication information groups.

20. The method of claim 17, wherein, For each of the M instruction information groups, the priority of the instruction information group is negatively correlated with the sequence number of the frequency domain unit group corresponding to the instruction information group.

21. A method for transmitting channel state information, wherein, Applied to the second node, the method includes: Send configuration information; Receive channel status information; The channel state information is determined based on the configuration information; the configuration information includes the reporting content of the channel state information and the reporting frequency band of the channel state information; the reporting content of the channel state information includes the indication information of the precoding matrix; in the received channel state information, the indication information of the precoding matrix is ​​divided into M indication information groups according to the frequency domain, and the transmission order of the M indication information groups is determined based on the priority of each indication information group in the M indication information groups; where M is an integer greater than 1.

22. The method according to claim 21, wherein, The channel state information reporting frequency band is divided into M frequency domain unit groups, and each frequency domain unit group includes at least one frequency domain unit within the channel state information reporting frequency band; one of the M indication information groups includes indication information of the precoding matrix corresponding to one of the frequency domain unit groups.

23. The method according to claim 22, wherein, The priority of each of the M indication information groups is determined according to at least one of the following: the sequence number of each indication information group in the M indication information groups, the sequence number of the frequency domain unit group corresponding to each of the M indication information groups, and the channel quality indicator (CQI) representing the frequency domain unit group corresponding to each of the M indication information groups.

24. The method according to claim 23, wherein, The frequency domain unit group's characterization CQI is obtained from the candidate CQI types.

25. The method according to claim 23, wherein, The frequency domain unit group is characterized by one of the following: The CQI of the frequency domain unit group; The average CQI of each frequency unit within the frequency unit group; The maximum value of CQI for each frequency unit within the frequency unit group; The minimum CQI of each frequency unit within the frequency unit group; The CQI of the lowest frequency unit within the frequency unit group; The CQI of the highest frequency unit within the frequency unit group; The median of the CQI for each frequency unit within the frequency unit group.

26. The method according to claim 23, wherein, For each of the M indication information groups, the priority of the indication information group and the CQI representation of the frequency domain unit group corresponding to the indication information group are positively correlated.

27. The method according to claim 26, wherein, For each of at least two indicator information groups whose corresponding frequency domain unit groups have the same CQI, the priority of the indicator information group and the ordinal number of the indicator information group or the ordinal number of the frequency domain unit group are negatively or positively correlated.

28. The method according to claim 23, wherein, The channel state information also includes CQI.

29. The method according to claim 22, wherein, Among the M frequency domain unit groups, at least M-1 frequency domain unit groups include K consecutive frequency domain units in the channel state information reporting frequency band, where K is a positive integer.

30. A communication device, wherein, include: Memory and processor; The memory and the processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method as described in any one of claims 1 to 20 or claims 21 to 29.

31. A computer-readable storage medium, wherein, The computer-readable storage medium includes a non-transitory computer-readable storage medium storing computer instructions that, when executed on a communication device, cause the communication device to perform the method as claimed in any one of claims 1 to 20 or 21 to 29.

32. A computer program product, wherein, When the computer program product is executed, it implements the method as claimed in any one of claims 1 to 20 or claims 21 to 29.

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