Beam reporting method, communication apparatus, storage medium and program product

Abstract

Provided are a beam reporting method, a communication apparatus, a storage medium and a program product. The beam reporting method comprises: sending a beam report to a second node, wherein the beam report comprises respective beam information of N beams, which comprise P first-type beams and Q second-type beams; the first-type beams have first-type channel state information, and the second-type beams have second-type channel state information; and beam information of the first-type beams and beam information of the second-type beams in the beam report comprise beam identifiers, N, P and Q being non-negative integers, and the sum of P and Q being equal to N.

Description

Beam reporting method, communication apparatus, storage medium and program product

[0001] The present disclosure claims priority to Chinese Patent Application No. 202410525710.X, filed on April 28, 2024, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of communication, and in particular to a beam reporting method, a communication apparatus, a storage medium and a program product. BACKGROUND

[0003] In the communication process between a base station and a user equipment, the base station can use a transmit beam to cover a certain spatial area to communicate with the user equipment corresponding to the spatial area. Since there are multiple transmit beams that can be used by the base station, and the communication effects corresponding to different transmit beams are different, it is necessary for the user equipment to report beam information of each transmit beam to the base station. SUMMARY

[0004] In one aspect, the present disclosure provides a beam reporting method applied to a first node. The beam reporting method includes: sending a beam report to a second node, wherein the beam report includes beam information of N beams respectively, the N beams include P first type beams and Q second type beams, the first type beam has first type channel state information, the second type beam has second type channel state information, the beam information of the first type beam and the beam information of the second type beam in the beam report both include a beam identifier (beam ID), N, P, and Q are non-negative integers, and the sum of P and Q is equal to N.

[0005] In another aspect, the present disclosure provides a beam reporting apparatus applied to a first node. The beam reporting apparatus includes: a sending module; the sending module is configured to send a beam report to a second node, wherein the beam report includes beam information of N beams respectively, the N beams include P first type beams and Q second type beams, the first type beam has first type channel state information, the second type beam has second type channel state information, the beam information of the first type beam and the beam information of the second type beam in the beam report both include a beam identifier, N, P, and Q are non-negative integers, and the sum of P and Q is equal to N.

[0006] In yet another aspect, the embodiments of the present disclosure provide a beam reporting method applied to a second node. The beam reporting method comprises: receiving a beam report sent by a first node, wherein the beam report comprises beam information of N beams respectively, the N beams comprise P first type beams and Q second type beams, the first type beam has first type channel state information, the second type beam has second type channel state information, the beam information of the first type beam and the beam information of the second type beam in the beam report both comprise a beam identifier, N, P, and Q are non-negative integers, and the sum of P and Q is equal to N.

[0007] In yet another aspect, the embodiments of the present disclosure provide a beam reporting apparatus applied to a second node. The beam reporting apparatus comprises: a receiving module, configured to receive a beam report sent by a first node, wherein the beam report comprises beam information of N beams respectively, the N beams comprise P first type beams and Q second type beams, the first type beam has first type channel state information, the second type beam has second type channel state information, the beam information of the first type beam and the beam information of the second type beam in the beam report both comprise a beam identifier, N, P, and Q are non-negative integers, and the sum of P and Q is equal to N.

[0008] In yet another aspect, the embodiments of the present disclosure provide a communication apparatus. The communication apparatus comprises: a memory and a processor; the memory and the processor are coupled; the memory is configured to store a computer program; and the processor is configured to execute the computer program to implement the method provided in any of the above aspects.

[0009] In yet another aspect, the embodiments of the present disclosure provide a computer readable storage medium, which stores computer program instructions. The computer program instructions are executed by a processor to implement the method provided in any of the above aspects.

[0010] In yet another aspect, the embodiments of the present disclosure provide a computer program product, which comprises computer program instructions. The computer program instructions are executed by a processor to implement the method provided in any of the above aspects. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings described in the following description are only some drawings of the embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0012] FIG. 1 is an architecture diagram of a beam reporting system according to some embodiments.

[0013] FIG. 2 is a flow diagram of a beam reporting method according to some embodiments.

[0014] FIG. 3 is a schematic diagram of transmit beams and receive beams, according to some embodiments.

[0015] FIG. 4 is a schematic diagram of a quantization step size varying with an index, according to some embodiments.

[0016] FIG. 5 is a schematic diagram of a structure of a beam reporting apparatus, according to some embodiments.

[0017] FIG. 6 is a schematic diagram of a structure of a communication apparatus, according to some embodiments. DETAILED DESCRIPTION

[0018] The technical solutions in the present disclosure will be described clearly and completely below with reference to the drawings in the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0019] It should be noted that in the present disclosure, the expressions such as “exemplarily” or “for example” are used to represent as an example, illustration or description. Any embodiment or design scheme described as “exemplarily” or “for example” in the present disclosure should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. In fact, the expressions such as “exemplarily” or “for example” are used to present the relevant concepts in a detailed manner.

[0020] Hereinafter, the terms “first”, “second”, and the like are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with “first”, “second” can explicitly or implicitly include one or more of the features.

[0021] In the description of the present disclosure, unless otherwise specified, “ / ” means “or”, for example, A / B can mean A or B. “And / or” in the present disclosure is only a description of the relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean: only A, A and B, and only B. In addition, “at least one” means one or more, and “multiple” means two or more.

[0022] With the rapid development of wireless communication technology, the low frequency band resources are increasingly strained, and the millimeter wave frequency band with more spectrum resources and bandwidth has become an important frequency band for future wireless beam reporting systems. However, the millimeter wave frequency band has a shorter wavelength, and its propagation conditions are much more demanding than the traditional 6GHz or below frequency band, including high path loss and sensitivity to blockage. In order to overcome this problem, millimeter wave signals usually need to be beamformed to concentrate signal energy in a small angular space to form a larger gain shaped beam. Beam management achieves alignment of the transmitter and receiver beam directions by establishing and maintaining a suitable beam pair, thereby achieving the best transmission performance. Beam management is crucial to the millimeter wave beam reporting system, and the beam management includes beam scanning, beam measurement, beam reporting and beam indication, etc.

[0023] Beam scanning refers to the process of a base station or user equipment (UE) using different analog beams to cover a space region in turn. During beam scanning, the base station or UE sequentially transmits beams from the entire codebook or codebook subset in order to find a good pair of transmit and receive beams for data and control channels. The beam scanning process mainly includes the transmit end beam scanning P-2 process and the receive end beam scanning P-3 process. For example, in the P-2 process or the P-3 process, the base station configures a high layer parameter resource set (non-zero power channel state information reference signal resource set, NZP-CSI-RS-ResourceSet), each resource set containing multiple channel state information reference signal (CSI-RS) resources or synchronization signal / physical broadcast channel Block (SSB) resources transmitted by different transmit beams, and the UE uses a fixed receive beam to receive and measure the CSI-RS or SSB resource to complete the P-2 process or the P-3 process. In addition, if the base station does not provide auxiliary information for the UE side receive beam, the UE may need to poll the receive beam, that is, the CSI-RS resource set for beam management is repeatedly transmitted multiple times, and the UE uses different receive beams to receive, thereby realizing the scanning of the receive end beam.

[0024] After beam sweeping or beam measurement, the UE reports the result of beam sweeping or the result of beam measurement to the network (NW), so that the network can accurately select beams or determine the channel quality of each beam pair, thereby ensuring the effectiveness of communication between the network and the UE.

[0025] Currently, after the UE completes beam sweeping, the UE needs to perform exhaustive scanning on multiple beams in the network and report the measurement results, so that the network side can select the optimal beam. However, in the case of dynamic changes in the network environment, the UE may need to re-measure and report the measurement results, or the content reported by the UE may increase, or in the case of limited reporting resources, there is a problem that it takes a long time to report the measurement results. Therefore, the current beam reporting method may cause significant training overhead, measurement power consumption and processing delay, thereby affecting network performance and user experience.

[0026] To solve the above technical problems, the embodiments of the present disclosure provide a beam reporting method applied to a first node. The beam reporting method comprises: sending a beam report to a second node; the beam report comprises beam information of N beams respectively, the N beams comprise P first-type beams and Q second-type beams, the first-type beams have first-type channel state information, the second-type beams have second-type channel state information, the beam information of the first-type beams and the beam information of the second-type beams in the beam report comprise beam identifiers, N, P and Q are positive integers, and the sum of P and Q is equal to N. Since the beam information in the beam report comprises the beam identifiers, the beam identifiers occupy less network resources than the reported measurement results, and therefore the problem of too much content reported in beam reporting can be solved.

[0027] The beam reporting method provided by the embodiments of the present disclosure can be applied to a beam reporting system as shown in FIG. 1. As shown in FIG. 1, the beam reporting system comprises a first node 101 and a second node 102.

[0028] The first node 101 and the second node 102 are in communication connection. The first node 101 can be a user equipment. The second node 102 can be a base station.

[0029] The first node 101 is configured to send a beam report to the second node 102, the beam report comprising beam information of N beams respectively, the beam information comprising beam identifiers, and N being a positive integer.

[0030] The second node 102 is configured to receive the beam report.

[0031] Exemplarily, the first node can be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, and a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) \ virtual reality (VR) device, and the like.

[0032] Exemplarily, the second node can be a base station, an evolved node base station (eNB), a next generation node base station (gNB), a new radio eNB, a macro base station, a micro base station, a high-frequency base station, or a transmission and reception point (TRP), a non-3rd generation partnership project (3GPP) access network (such as WiFi), and / or a non-3GPP interworking function (N3IWF), and the like.

[0033] It should be noted that FIG. 1 is only an exemplary framework diagram, and the number of devices included in FIG. 1 and the names of the respective devices are not limited.

[0034] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are for more clearly illustrating 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. It can be known by those skilled in the art that, with the evolution of network architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0035] The beam reporting method provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0036] The beam reporting method provided by the embodiments of the present disclosure can be applied to the first node 101 in the beam reporting system shown in FIG. 1. FIG. 2 shows a flowchart of a beam reporting method, as shown in FIG. 2, the beam reporting method comprises S201.

[0037] S201, sending a beam report to a second node.

[0038] The beam report includes beam information of N beams respectively, the N beams include P first type beams and Q second type beams, the first type beams have first type channel state information, and the second type beams have second type channel state information, the beam information of the first type beams and the beam information of the second type beams in the beam report each include a beam identifier, N, P, and Q are non-negative integers, and a sum of P and Q is equal to N.

[0039] In some embodiments, the first type channel state information is obtained based on measurement, and the second type channel state information is obtained based on prediction.

[0040] In an implementation manner, the second type channel state information is obtained based on prediction of the second type channel state information.

[0041] In an implementation manner, the second type channel state information is obtained based on a channel state information prediction model. The channel state information prediction model is trained based on the first type channel state information.

[0042] In some embodiments, the beam report is one of the following: a quasi-co-location (QCL) state, a transmission configuration indicator (TCI) state, a spatial relation (or spatial relation information), a reference signal (RS), a reference signal resource, a spatial filter, a precoding, and a channel state information report.

[0043] In some embodiments, the beam identifier is one of the following: a quasi-co-location state index, a transmission configuration indicator state index, a spatial relation state indication, a reference signal index, a spatial filter index, a precoding index, a channel state information reference signal resource indication (CSI-RS resource indication), a synchronization signal block resource indication (SSB resource indication, SSB RI), a channel state information resource set identifier (CSI resource set ID), a channel state information resource setting identifier (CSI resource setting ID), a report setting identifier (report setting ID), a bitmap, and a combination index.

[0044] In an implementation manner, the beam information of the N beams in the beam report is arranged in order of the channel state information (the first type channel state information or the second type channel state information) possessed by the N beams (from high to low or from low to high).

[0045] In an implementation manner, the beam information of the P first type beams and the beam information of the Q second type beams in the beam report are respectively sorted. The beam information of the P first type beams is sorted according to the respective first type channel state information, and the beam information of the Q second type beams is sorted according to the respective second type channel state information.

[0046] In an implementation manner, the N beams included in the beam report are beams corresponding to the reference signals transmitted by the second node, and the beam information of the N beams is determined by the first node based on the reception beams of the first node. There are multiple transmission beams of the second node and multiple reception beams of the first node, and the above beam report is a beam report of N beams of multiple transmission beams of the second node determined by the first node based on one of the multiple reception beams. The beamforming directions of the multiple reception beams or the multiple transmission beams are different.

[0047] It can be understood that the first node can also determine a beam report corresponding to each reception beam based on multiple reception beams and send it to the second node.

[0048] Exemplarily, as shown in FIG. 3, the second node transmits information based on multiple transmission beams, and the first node receives information based on multiple reception beams. The beamforming directions of the multiple transmission beams and the multiple reception beams are different.

[0049] In some embodiments, the beam information of the first type beam further includes at least one of the following: the first type channel state information, the first indication information. The first indication information is used to indicate the size relationship between the first type channel state information and the threshold.

[0050] In some embodiments, the beam information of the second type beam further includes at least one of the following: the second type channel state information, the second indication information; the second indication information is used to indicate the size relationship between the second type channel state information and the threshold.

[0051] In some embodiments, the relationship between the first type channel state information or the second type channel state information and the threshold includes one of the following: the first type channel state information or the second type channel state information is greater than the threshold, the first type channel state information or the second type channel state information is less than the threshold, and the first type channel state information or the second type channel state information is equal to the threshold.

[0052] It should be understood that, in the case of sufficient transmission resources, the channel state information and the indication information can be further included in the beam information of the first type beam or the beam information of the second type beam; in the case of limited transmission resources, the channel state information or the indication information can be further included in the beam information of the first type beam or the beam information of the second type beam.

[0053] In some embodiments, the first type of channel state information or the second type of channel state information can be one of: channel state information (CSI), reference signal received power (RSRP), reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR), received signal strength indicator (RSSI), channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), layer indicator (LI), signal to noise ratio (SNR), block error rate (BLER), channel phase information, channel impulse response information, timing information, confidence, confidence information, probability, channel matrix, precoding matrix, location, channel observation based fingerprinting, line of sight (LOS) and non-line of sight (NLOS) identification information, channel measurement based timing, channel measurement based angle, channel measurement based likelihood.

[0054] In some embodiments, the first type of channel state information or the second type of channel state information can also be a new channel measurement based parameter or an enhancement of an existing channel measurement based parameter.

[0055] In an implementation, the probability of one beam is a probability that the second node determines the beam as a transmit beam.

[0056] It can be understood that, in the case that the first type of channel state information comprises reference signal received power, the first indication information is used to indicate the relationship between the reference signal received power and the threshold (the threshold can be a power threshold). In the case that the first type of channel state information comprises probability, the first indication information is used to indicate the relationship between the probability and the threshold (the threshold can be a probability threshold). In the case that the second type of channel state information comprises reference signal received power, the second indication information is used to indicate the relationship between the reference signal received power and the threshold (the threshold can be a power threshold). In the case that the second type of channel state information comprises probability, the second indication information is used to indicate the relationship between the probability and the threshold (the threshold can be a probability threshold).

[0057] In an implementation manner, the first node determines the first type of channel state information, and generates the first indication information based on the threshold and the first type of channel state information.

[0058] In an implementation manner, the first node determines the second type of channel state information, and generates the second indication information based on the threshold and the second type of channel state information.

[0059] In some embodiments, the beam information of each beam reported by the first node corresponds to one resource, and the beam information of the N beams corresponds to N resources.

[0060] In some embodiments, each resource of the N resources included in the beam report comprises one information bit, and the one information bit is used to indicate the beam identifier.

[0061] In some embodiments, each resource of the N resources included in the beam report comprises two information bits, and the two information bits are respectively used to indicate one of the following: the beam identifier and the reference signal received power, the beam identifier and the probability, and the beam identifier and the indication information.

[0062] In some embodiments, each resource of the N resources included in the beam report comprises three information bits, and the three information bits are respectively used to indicate the beam identifier, the reference signal received power, and the indication information, or are respectively used to indicate the beam identifier, the probability, and the indication information.

[0063] In some embodiments, the first type of beam is associated with the first type of set, and the second type of beam is associated with the second type of set.

[0064] Exemplarily, the first type of set can comprise the beam information of the first type of beam, and the second type of set can comprise the beam information of the second type of beam.

[0065] Exemplarily, the first type of set can comprise a plurality of first type of beams, and the second type of set can comprise a plurality of second type of beams.

[0066] Exemplarily, the first type of set and the second type of set can be a set of reporting resources corresponding to a beam report.

[0067] In some embodiments, the first type of set and the second type of set have an association relationship.

[0068] In some embodiments, the association relationship between the first type of set and the second type of set satisfies at least one of the following:

[0069] The first type of set and the second type of set exist in a reporting resource set of a beam report at the same time;

[0070] The size of one of the first type of set and the second type of set is greater than the size of the other set;

[0071] One of the first type of set and the second type of set is a subset of the other set.

[0072] In some embodiments, the P first type of beams are the first P beams with the largest first type of channel state information among all first type of beams; and the Q second type of beams are the first Q beams with the largest second type of channel state information among all second type of beams.

[0073] In some embodiments, when N is 1, the N beams are the beam with the largest channel state information among all beams.

[0074] In some embodiments, when N is 1, the N beams are the beam with the largest first type of channel state information among all first type of beams.

[0075] In an implementation manner, when N is 1, and there is a case that the second type of channel state information and the first type of channel state information are equal and largest, the beam with the first type of channel state information is taken as the N beam.

[0076] In some embodiments, when P is 1, the P first type of beams are the beam with the largest first type of channel state information among all first type of beams; and the Q second type of beams are the first Q-1 beams with the largest second type of channel state information among all second type of beams.

[0077] In some embodiments, P and Q satisfy one of the following preset conditions: a preset ratio, a preset difference, and a preset multiplication.

[0078] In some embodiments, the preset condition satisfied by P and Q is determined based on predefinition or preconfiguration.

[0079] In some embodiments, the preset condition satisfied by P and Q is determined based on predefinition, which can be implemented in the following manner: the second node sends preset condition indication information to the first node, and the preset condition indication information is used to indicate the preset condition satisfied by P and Q.

[0080] In an implementation, P and Q satisfy a preset ratio A:B, P=N*A / (A+B), Q=N*B / (A+B). A and B are positive integers.

[0081] It should be understood that the number of the first type of beams corresponds to the number of beam information of the first type of beams. Since the first type of channel state information included in the beam information of the first type of beams is obtained by measurement, the second node needs to send reference information to the first node based on different beams, so that the first node can measure the first type of channel state information corresponding to different beams. Therefore, the more the number of the first type of beams included in the beam report, the more beams the first node needs to measure, the more reference signals the second node needs to send, the longer the time for generating the beam report, and the more resource consumption for generating the beam report. The number of the second type of beams corresponds to the number of beam information of the second type of beams. Since the second type of channel state information in the beam information of the second type of beams is obtained by prediction, the first type of channel state information in the embodiment of the present disclosure is easier to generate than the first type of channel state information in the beam information of the first type of beams which must be measured by sending reference information by the second node. Thus, the more the number of the second type of beams in the beam report, the shorter the time for generating the beam report, and the less resource consumption caused by sending reference signals.

[0082] Therefore, the number P and Q in the beam report can be determined based on the number of transmission resources available for sending the beam report and the desired time length for generating the beam report, and preconfigured between the first node and the second node.

[0083] On the other hand, since the second type of channel state information can be predicted by a model trained based on the first type of channel state information, the fewer the number of the first type of beams, the more likely it will cause the prediction accuracy of the second type of channel state information to decrease. Therefore, the number of the first type of beams measured by the first node should be higher than a number threshold, which can make the prediction accuracy of the model satisfy an accuracy threshold.

[0084] In an implementation, the model for predicting the second type of channel state information can be pre-trained. In this way, the second node does not need to send reference information based on multiple beams, and the first node can accurately predict the second type of channel state information.

[0085] In some embodiments, all the first type of beams form a setB set, all the second type of beams form a setA set, the first type of channel state information is referred to as B-type information, and the second type of channel state information is referred to as A-type information.

[0086] In some embodiments, the setB set is a subset of the setA set.

[0087] In some embodiments, the number of beams in the setB set is less than the number of beams in the setA.

[0088] In some embodiments, the first type of beams are narrow beams, and the second type of beams are wide beams.

[0089] In some embodiments, the setB set and the setA set are sent by the second node to the first node.

[0090] In some embodiments, the setB set corresponds to SSB resources, and the setA set corresponds to CSI-RS resources.

[0091] In some embodiments, the channel state information of the beams in the setA set and the channel state information of the beams in the setB set are used to train a prediction model of channel state information.

[0092] In some embodiments, the prediction model of channel state information can be an artificial intelligence (AI) model.

[0093] It should be noted that in some embodiments, the model is used to describe a processing method, function, feature or feature group that the UE can perform. The model can be one of the following: a function, a function module, a function module, a processing method, an information processing method, an implementation, a feature, a feature group, a configuration, a configuration set, a data set (such as a data set used for model training), or a data-driven algorithm. Different models can be associated with different configurations (for example, RRC (radio resource control) configurations). Model activation can refer to activating the corresponding configuration of the UE. Similarly, model deactivation, switching and fallback can refer to deactivating the corresponding configuration, switching the configuration and falling back to the configuration without the model, respectively.

[0094] In some embodiments, the channel state information of the beams in the setA set is used to input the trained prediction model of channel state information to obtain the channel state information of the beams in the setB set.

[0095] In some embodiments, the first type of channel state information or the second type of channel state information included in the beam report is represented by a fixed-length bit sequence, and the bit sequence has a plurality of bit values, and one bit value in the plurality of bit values is used to represent a value range. In this way, by using a limited number of bit sequences, the transmission resource required for transmitting the beam report can be reduced.

[0096] It should be understood that, since the value range represented by the bit value can not accurately represent the first type of channel state information or the second type of channel state information, the first node can further report the first indication information or the second indication information, so that the second node can obtain the size relationship between the first type of channel state information or the second type of channel state information and the threshold value, thereby assisting the second node to make numerical judgment, so as to improve the reliability and accuracy of beam selection.

[0097] In some embodiments, the beam information indicates the first type of channel state information or the second type of channel state information by a first bit sequence, and the value of the first bit sequence corresponds to the value range of the first type of channel state information or the second type of channel state information.

[0098] In some embodiments, the length of the first bit sequence is determined based on bit number indication information, and the bit number indication information is pre-configured or pre-defined. The bit number indication information includes the length of the first bit sequence or the position of each bit in the first bit sequence.

[0099] For example, the length of the first bit sequence can be 2 bits or 3 bits.

[0100] In some embodiments, the bit number indication information is determined based on pre-definition, and is realized by that the second node sends the bit number indication information to the first node.

[0101] In an implementation, the length of the first bit sequence is related to a quantization step, and the quantization step is used to represent the size of the value range of the first type of channel state information or the second type of channel state information corresponding to the value of the first bit sequence.

[0102] In an implementation, the quantization steps corresponding to all values of the first bit sequence are the same.

[0103] In an implementation, the quantization steps corresponding to at least two values of the first bit sequence are different.

[0104] It should be understood that, if the quantization steps corresponding to at least two values of the first bit sequence are different, the two values correspond to different precisions respectively. In this way, different channel state information is represented by values with different precisions, so that the beam information can be reported to the second node more accurately in the case of uneven signal amplitude distribution, thereby ensuring the reliability and accuracy of beam selection or network optimization.

[0105] In an implementation, the value of the first bit sequence and the value range of the first type of channel state information or the second type of channel state information are stored by a mapping table, and the same value of the first bit sequence in different mapping tables corresponds to different value ranges of the first type of channel state information or the second type of channel state information.

[0106] In some embodiments, the correspondence between the value of the first bit sequence and the value range of the first type of channel state information or the second type of channel state information is determined based on the correspondence indication information.

[0107] In some embodiments, the correspondence indication information is sent by the second node to the first node.

[0108] In some embodiments, there are multiple correspondences, and the same first bit sequence in different correspondences corresponds to different value ranges of the first type of channel state information or the second type of channel state information.

[0109] In an implementation, the beam information indicates the first type of channel state information or the second type of channel state information by using a first bit sequence and a second bit sequence, the value of the first bit sequence corresponds to a value range of the first type of channel state information or the second type of channel state information, and the value of the second bit sequence corresponds to an offset value of the value range.

[0110] In an implementation, the value of the second bit sequence corresponds to a preconfigured or predefined offset value of the value range. For example, a preset value is increased or decreased, or an upper limit or a lower limit is increased or decreased.

[0111] It can be understood that the value of the first bit sequence corresponds to the modified value range of the first bit sequence without modifying the original mapping table of the first bit sequence, thereby improving the accuracy of the quantization step corresponding to the value of the first bit sequence, and further improving the reliability and accuracy of beam selection or network optimization.

[0112] In an implementation, the second bit sequence is also referred to as a tolerance bit sequence.

[0113] For example, the length of the first bit sequence is 3, and the length of the second bit sequence is 1.

[0114] For example, the quantization step corresponding to one value of the first bit sequence is 1, and the length of the second bit sequence is 1; when the second bit sequence is 0, it is used to indicate that the upper limit of the quantization step of the value is reduced by one half; and when the second bit sequence is 1, it is used to indicate that the lower limit of the quantization step of the value is increased by one half.

[0115] Exemplarily, the length of the second bit sequence is 2; the second bit sequence is 00, used to indicate that the upper limit of the value range corresponding to the value of the first bit sequence is reduced by three-quarters of the quantization step, such as 0-1 to 0-0.25; the second bit sequence is 01, used to indicate that the upper limit of the value range is reduced by two-quarters of the quantization step, and the lower limit of the value range is increased by one-quarter of the quantization step, such as 0-1 to 0.25-0.5; the second bit sequence is 10, used to indicate that the upper limit of the value range is reduced by one-quarter, and the lower limit of the value range is increased by two-quarters of the quantization step, such as 0-1 to 0.5-0.75; and the second bit sequence is 11, used to indicate that the lower limit of the value range is increased by three-quarters of the quantization step, such as 0-1 to 0.75-1.

[0116] In some embodiments, the quantization step of the value range in the mapping table corresponding to the first bit sequence is adjusted to improve the quantization accuracy. For example, the quantization step corresponding to each value of the first bit sequence of 4 bits is adjusted from 1 to 0.5.

[0117] In some embodiments, the quantization step corresponding to each of at least two values of the first bit sequence is different, which is also called multi-gradient quantization. The quantization step corresponding to different first bit sequences is related to the characteristics of the signal corresponding to the beam. For example, the rate of change of the channel state information of the signal corresponding to the beam is different in different value ranges, and the value range with a large rate of change is corresponded to a large quantization step, and the value range with a small rate of change is corresponded to a small quantization step.

[0118] Exemplarily, the value range can be determined based on an exponential function. Since the gradient of the exponential function changes obviously, the value range of the exponential with a large gradient changes has low accuracy, and the value range of the exponential with a small gradient changes has high accuracy. Therefore, the value range with a large gradient change can be used to indicate the channel state information with a large difference between the expected channel state information, and the value range with a small gradient change can be used to indicate the channel state information with a small difference between the expected channel state information. Thus, different quantization accuracies (the smaller the quantization step, the higher the quantization accuracy) can be used for different values of the first bit sequence, and the value with high quantization accuracy can be used to indicate the channel state information with high importance or low rate of change, so that the channel state information of a beam can be more flexibly and accurately represented to the second node.

[0119] For example, each value of the first bit sequence corresponds to an exponential function interval; for example, the length of the first bit sequence is 3, and the mapping relationship between the value of the first bit sequence and the value range satisfies the following Table 1:

[0120] Table 1

[0121] As shown in FIG. 4, FIG. 4 is a diagram illustrating the change of the quantization step corresponding to the value range with the index. As the value increases, the quantization step corresponding to the value range increases exponentially; the value range with small quantization step is used to represent the value interval close to the expected channel state information, and the value range with large quantization step is used to represent the value interval far from the expected channel state information.

[0122] It can be understood that, in the case of limited transmission resources, the length of the first bit sequence is reduced. At this time, due to the reduction of the length of the first bit sequence, the values of the first bit sequence are reduced, and the number of value ranges of the channel state information that can be represented is reduced. Moreover, due to the unchanged overall value range of the channel state information to be reported, the quantization step of the value range corresponding to the value of the first bit sequence is increased, resulting in a decrease in the accuracy of the channel state information reported to the second node. Therefore, the quantization step of the value range with higher importance (e.g., the value range with a gap less than the gap threshold from the expected channel state information) can be reduced, i.e., the quantization accuracy of the value range with higher importance is improved. Further, the quantization accuracy can be ensured while reducing the reporting overhead, and the accuracy and reliability of the channel state information reported to the second node are ensured, so as to ensure the reliability and effectiveness of the beam selection or network optimization.

[0123] Exemplarily, as shown in Table 2, it is assumed that the length of the first bit sequence is 3 bits, the quantization step corresponding to the value of the first bit sequence is 1, the total value range of the channel state information represented by the first bit sequence is 0-8, and the value ranges 0-1 and 1-2 have the highest importance, the value range 2-4 has the second highest importance, and the value range 4-8 has the lowest importance. When the length of the first bit sequence is reduced from 3 bits to 2 bits, as shown in Table 3, the first bit sequence with a length of 2 bits represents the value ranges 0-1 and 1-2 based on two values, represents the value range 2-4 based on one value, and represents the value range 4-8 based on one value. In this way, the quantization step of the value range with higher importance is small or the quantization accuracy is high, thereby ensuring the reliability and effectiveness of the beam selection or network optimization.

[0124] Table 2

[0125] Table 3

[0126] The embodiment of the present disclosure further provides a beam reporting method applied to a second node of the beam reporting system shown in FIG. 1. The beam reporting method comprises: receiving a beam report sent by a first node. The beam report comprises beam information of N beams respectively, the N beams comprising P first-type beams and Q second-type beams, the first-type beams having first-type channel state information, and the second-type beams having second-type channel state information, the beam information of the first-type beams and the beam information of the second-type beams in the beam report comprising beam identifiers, N, P and Q being non-negative integers, and the sum of P and Q being equal to N.

[0127] In some embodiments, the beam report is one of the following: quasi co-location state, transmission configuration indication state, spatial relation, reference signal, reference signal resource, spatial filter, precoding, channel state information report.

[0128] In some embodiments, the beam identifier is one of the following: quasi co-location state index, transmission configuration indication state index, spatial relation state indication, reference signal index, spatial filter index, precoding index, channel state information reference signal resource indication, synchronization signal block resource indication, channel state information resource set identification, channel state information resource setting identification, report setting identification, bitmap, combination index.

[0129] In some embodiments, the beam information of the first-type beams further comprises at least one of the following: the first-type channel state information, first indication information; and the beam information of the second-type beams further comprises at least one of the following: the second-type channel state information, second indication information.

[0130] In some embodiments, the first indication information is used to indicate a size relationship between the first-type channel state information and a threshold, and the second indication information is used to indicate a size relationship between the second-type channel state information and a threshold.

[0131] In some embodiments, the first-type channel state information or the second-type channel state information can be one of the following: channel state information, reference signal received power, reference signal received quality, signal to interference and noise ratio, received signal strength indication, channel quality indication, precoding matrix indication, rank indication, layer indication, signal to noise ratio, block error rate, channel phase information, channel impulse response information, timing information, confidence, confidence information, probability, channel matrix, precoding matrix, position, channel observation based fingerprinting, identification information of direct path and non-direct path, channel measurement based timing, channel measurement based angle, channel measurement based likelihood.

[0132] In some embodiments, the first-type beams are associated with a first-type set, the second-type beams are associated with a second-type set, and there is an association relationship between the first-type set and the second-type set.

[0133] In some embodiments, the association between the first type of set and the second type of set satisfies at least one of the following: the first type of set and the second type of set appear in a resource set of a beam report at the same time, one of the first type of set and the second type of set is a large set and the other is a small set, one of the first type of set and the second type of set is a subset of the other.

[0134] In some embodiments, the P first type of beams are the first P beams with the largest first type of channel state information among all the first type of beams, and the Q second type of beams are the first Q beams with the largest second type of channel state information among all the second type of beams.

[0135] In some embodiments, when the N is 1, the N beams are the beam with the largest channel state information among all the beams.

[0136] In some embodiments, when the N is 1, the N beams are the beam with the largest first type of channel state information among all the first type of beams.

[0137] In some embodiments, when the P is 1, the P first type of beams are the beam with the largest first type of channel state information among all the first type of beams, and the Q second type of beams are the first N-1 beams with the largest second type of channel state information among all the second type of beams.

[0138] In some embodiments, the P and the Q satisfy one of the following preset conditions: a preset ratio, a preset difference, and a preset multiplication.

[0139] In some embodiments, the preset condition satisfied by the P and the Q is determined based on predefinition or preconfiguration.

[0140] In some embodiments, the preset condition satisfied by the P and the Q is determined based on predefinition by the following manner: the second node sends preset condition indication information to the first node, and the preset condition indication information is used to indicate the preset condition satisfied by the P and the Q.

[0141] In some embodiments, the beam information indicates the first type of channel state information or the second type of information state information by using a first bit sequence, and the value of the first bit sequence corresponds to the value range of the first type of channel state information or the second type of channel state information.

[0142] In some embodiments, the length of the first bit sequence is determined based on bit number indication information, and the bit number indication information is determined based on preconfiguration or predefinition.

[0143] In some embodiments, the bit number indication information is based on a predefined determination by the second node sending the bit number indication information to the first node.

[0144] In some embodiments, the length of the first bit sequence is related to a quantization step, the quantization step being used to represent a size of a value range of the first type of channel state information or the second type of channel state information corresponding to a value of the first bit sequence.

[0145] In some embodiments, all values of the first bit sequence correspond to a same quantization step.

[0146] In some embodiments, at least two values of the first bit sequence each correspond to a different quantization step.

[0147] In some embodiments, a correspondence between a value of the first bit sequence and a value range of the first type of channel state information or the second type of channel state information is determined based on correspondence indication information, the correspondence indication information being sent by the second node to the first node.

[0148] In some embodiments, there are multiple correspondences, and in different correspondences of the multiple correspondences, a same value of the first bit sequence corresponds to different value ranges of the first type of channel state information or the second type of channel state information.

[0149] In some embodiments, the beam information indicates the first type of channel state information or the second type of channel state information by a first bit sequence and a second bit sequence, a value of the first bit sequence corresponding to a value range of the first type of channel state information or the second type of channel state information, and a value of the second bit sequence corresponding to an offset value of the value range.

[0150] The embodiments of the present disclosure can divide the functional modules of the communication device according to the above-mentioned method embodiments. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one functional module. The integrated module can be implemented in the form of hardware or software. It should be noted that the division of the modules in the embodiments of the present disclosure is illustrative, and is only a logical functional division. In actual implementation, another division manner can be used. Hereinafter, taking the division of each functional module according to each function as an example for description.

[0151] FIG. 5 is a structural schematic diagram of a beam reporting device according to some embodiments. The beam reporting device can perform the beam reporting method provided by the above-mentioned method embodiments. As shown in FIG. 5, the beam reporting device 50 includes a sending module 501.

[0152] The sending module 501 is configured to send a beam report to the second node, the beam report comprising beam information of N beams, the N beams comprising P first-type beams and Q second-type beams, the first-type beams having first-type channel state information, and the second-type beams having second-type channel state information, the beam information of the first-type beams and the beam information of the second-type beams in the beam report each comprising a beam identifier, N, P, and Q being non-negative integers, and the sum of P and Q being equal to N.

[0153] In the case of implementing the functions of the above-described integrated modules in the form of hardware, the embodiments of the present disclosure provide another structure of the communication apparatus involved in the above-described embodiments. As shown in FIG. 6, the communication apparatus 60 comprises a processor 602 and a bus 604. In some embodiments, the communication apparatus can further comprise a memory 601; and in some embodiments, the communication apparatus can further comprise a communication interface 603.

[0154] The processor 602 can be various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present disclosure. The processor 602 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. The processor 602 can implement or execute various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present disclosure. The processor 602 can also be a combination of implementing computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0155] The communication interface 603 is configured to connect with other devices through a communication network. The communication network can be an Ethernet, a radio access network, a wireless local area network (WLAN), etc.

[0156] The memory 601 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

[0157] As an implementation manner, the memory 601 can exist independently of the processor 602, and the memory 601 can be connected with the processor 602 through the bus 604, for storing instructions or program codes. When the processor 602 invokes and executes the instructions or program codes stored in the memory 601, the beam reporting method provided in the embodiments of the present disclosure can be implemented.

[0158] In another implementation manner, the memory 601 can also be integrated with the processor 602.

[0159] The bus 604 can be an extended industry standard architecture (EISA) bus or the like. The bus 604 can be divided into an address bus, a data bus, a control bus and the like. For the convenience of representation, only one thick line is used in FIG. 6, but it does not mean that there is only one bus or only one type of bus.

[0160] Some embodiments of the present disclosure provide a computer readable storage medium (for example, a non-transitory computer readable storage medium) having computer program instructions stored therein, and the computer program instructions, when executed on a computer, cause the computer to perform the beam reporting method described in any of the above embodiments.

[0161] Exemplarily, the above computer readable storage medium can include, but is not limited to, a magnetic storage device (for example, a hard disk, a floppy disk or a magnetic tape and the like), an optical disc (for example, a compact disc (CD), a digital versatile disc (DVD) and the like), a smart card and a flash memory device (for example, an erasable programmable read-only memory (EPROM), a card, a stick or a key drive and the like). The various computer readable storage media described in the present disclosure can represent one or more devices and / or other machine readable storage media for storing information. The term "machine readable storage medium" can include, but is not limited to, a wireless channel and various other media capable of storing, containing and / or carrying instructions and / or data.

[0162] The embodiments of the present disclosure provide a computer program product containing instructions, and when the computer program product is executed on a computer, the computer performs the beam reporting method described in any of the above embodiments.

[0163] The above is only a specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any change or replacement within the technical scope disclosed in the present disclosure should be covered in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A method of reporting beams, wherein, The method is applied to a first node and comprises: sending a beam report to a second node, wherein the beam report comprises beam information of N beams respectively, the N beams comprise P first-type beams and Q second-type beams, the first-type beams have first-type channel state information, the second-type beams have second-type channel state information, the beam information of the first-type beams and the beam information of the second-type beams in the beam report each comprise a beam identifier, N, P, and Q are non-negative integers, and the sum of P and Q is equal to N.

2. The method of claim 1, wherein, The beam information of the first-type beams further comprises at least one of the following: the first-type channel state information, first indication information; and the beam information of the second-type beams further comprises at least one of the following: the second-type channel state information, second indication information.

3. The method of claim 2, wherein, The first indication information is used to indicate a size relationship between the first-type channel state information and a threshold value, and the second indication information is used to indicate a size relationship between the second-type channel state information and a threshold value.

4. The method of claim 2, wherein, The first-type channel state information or the second-type channel state information is one of the following: channel state information, reference signal received power, reference signal received quality, signal-to-interference-and-noise ratio, received signal strength indication, channel quality indication, precoding matrix indication, rank indication, layer indication, signal-to-noise ratio, block error rate, channel phase information, channel impulse response information, timing information, confidence, confidence information, probability, channel matrix, precoding matrix, position, channel observation-based fingerprinting, identification information of direct and indirect paths, channel measurement-based timing, channel measurement-based angle, channel measurement-based likelihood.

5. The method of claim 1, wherein, The first-type beams are associated with a first-type set, and the second-type beams are associated with a second-type set, and there is an association relationship between the first-type set and the second-type set.

6. The method of claim 5, wherein, The association relationship between the first-type set and the second-type set satisfies at least one of the following: The first-type set and the second-type set are both present in a resource set of a beam report; The size of one of the first-type set and the second-type set is greater than the size of the other set; One of the first-type set and the second-type set is a subset of the other set.

7. The method of claim 1, wherein, The P first-type beams are the first P beams with the largest first-type channel state information among all the first-type beams; and the Q second-type beams are the first Q beams with the largest second-type channel state information among all the second-type beams.

8. The method of claim 1, wherein, In a case where N is 1, the N beams are a beam with the largest channel state information among all beams.

9. The method of claim 1, wherein, In a case where N is 1, the N beams are a beam with the largest first-type channel state information among all first-type beams.

10. The method of claim 1, wherein, In a case where P is 1, the P first-type beams are a beam with the largest first-type channel state information among all first-type beams; and the Q second-type beams are the first N-1 beams with the largest second-type channel state information among all second-type beams.

11. The method of claim 1, wherein, The P and the Q satisfy one of the following preset conditions: a preset ratio, a preset difference, and a preset product.

12. The method of claim 11, wherein, The preset condition satisfied between the P and the Q is determined based on predefinition or preconfiguration.

13. The method of claim 12, wherein, The preset condition satisfied between the P and the Q is determined based on predefinition by the following manner: the second node sends preset condition indication information to the first node, the preset condition indication information being used for indicating the preset condition satisfied between the P and the Q.

14. The method of claim 1, wherein, The beam information indicates the first type of channel state information or the second type of information state information by a first bit sequence, a value of the first bit sequence corresponding to a value range of the first type of channel state information or the second type of channel state information.

15. The method of claim 14, wherein, A length of the first bit sequence is determined based on bit number indication information, the bit number indication information being determined based on preconfiguration or predefinition.

16. The method of claim 15, wherein, The bit number indication information is determined based on predefinition by the following manner: the second node sends the bit number indication information to the first node.

17. The method of claim 14, wherein, The length of the first bit sequence is related to a quantization step, the quantization step being used for representing a size of the value range of the first type of channel state information or the second type of channel state information corresponding to the value of the first bit sequence.

18. The method of claim 17, wherein, Quantization steps corresponding to all values of the first bit sequence are the same.

19. The method of claim 17, wherein, Quantization steps corresponding to at least two values of the first bit sequence are different.

20. The method of claim 14, wherein, A corresponding relationship between the value of the first bit sequence and the value range of the first type of channel state information or the second type of channel state information is determined based on corresponding relationship indication information, the corresponding relationship indication information being sent by the second node to the first node.

21. The method of claim 20, wherein, There are multiple corresponding relationships, and the value range of the first type of channel state information or the second type of channel state information corresponding to the same value of the first bit sequence is different in different corresponding relationships.

22. The method of claim 1, wherein, The beam information indicates the first type of channel state information or the second type of channel state information by a first bit sequence and a second bit sequence, a value of the first bit sequence corresponding to a value range of the first type of channel state information or the second type of channel state information, and a value of the second bit sequence corresponding to an offset value of the value range.

23. A method of beam reporting, wherein, The method is applied to a second node and includes: receiving a beam report sent by a first node, wherein the beam report includes beam information of N beams respectively, the N beams including P first type of beams and Q second type of beams, the first type of beams having first type of channel state information, the second type of beams having second type of channel state information, the beam information of the first type of beams and the beam information of the second type of beams both including beam identification, N, P, and Q being non-negative integers, and a sum of P and Q being equal to N.

24. A communications device comprising: a memory and a processor; the memory and the processor are coupled; the memory is used for storing instructions executable by the processor; the processor executes the instructions to perform the method according to any one of claims 1-22, or executes the instructions to perform the method according to claim 23.

25. A computer readable storage medium, wherein, The computer readable storage medium has stored thereon computer instructions, which, when executed by a computer, cause the computer to perform the method according to any one of claims 1-22, or to perform the method according to claim 23 when the instructions are executed.

26. A computer program product, wherein, The computer program product comprises computing technology program instructions, which, when executed by a processor, implement the method according to any one of claims 1-22, or to perform the method according to claim 23 when the instructions are executed.

Images