WO2023011185A1

WO2023011185A1 - Channel information measurement method and communication apparatus

Info

Publication number: WO2023011185A1
Application number: PCT/CN2022/106763
Authority: WO
Inventors: 黄梅玉; 高慧; 陈卓
Original assignee: 华为技术有限公司
Priority date: 2021-07-31
Filing date: 2022-07-20
Publication date: 2023-02-09
Also published as: CN115696359A

Abstract

The present application relates to a channel information measurement method and a communication apparatus. The channel information measurement method comprises: a network device determining m orthogonal analog beam weights, wherein m is the number of elements corresponding to one radio frequency channel; on the basis of the m orthogonal analog beam weights, the network device receiving an uplink reference signal from a terminal device within one time domain symbol or m consecutive time domain symbols; and the network device obtaining complete channel information on the basis of the uplink reference signal and the m orthogonal analog beam weights. In the present application, by means of such a channel information measurement method, the speed at which a network device receives an uplink reference signal on the basis of orthogonal analog beam weights is increased, and the impact of analog beam weights can be eliminated by using the orthogonal mathematical characteristic of the analog beam weights, thereby acquiring complete channel information of elements corresponding to a radio frequency channel.

Description

A channel information measurement method and communication device

This application claims the priority of the Chinese patent application with the application number 202110877172.7 and the application name "a channel information measurement method and communication device" submitted to the State Intellectual Property Office of China on July 31, 2021, the entire content of which is incorporated by reference incorporated in this application.

technical field

The present application relates to the field of communication technologies, and in particular to a method for measuring channel information and a communication device.

Background technique

By increasing the number of baseband channels, IF RF channels, or antennas of the base station, a stronger digital beamforming effect can be achieved to improve antenna coverage, but the hardware cost of the base station will also increase sharply as the number of channels increases. Therefore, in the scenario where the number of baseband channels (due to the one-to-one mapping between baseband channels and radio frequency channels, it can also be understood as the number of radio frequency channels) is less than the number of actual antenna elements, hybrid beamforming (hybrid beamforming, HBF) technology can be used, that is, using The mixed beamforming technology of digital domain and analog domain reduces the cost that increases with the number of channels.

Please refer to Figure 1. Figure 1 shows the subarray structure of the HBF. The subarray structure of the HBF includes baseband channels (or radio frequency channels, namely TRx0, TRx1, TRx2 and TRx3 in Figure 1), ±45° polarized Array subunits, power splitters and phase shifters. Wherein, each baseband channel (or radio frequency channel) only drives part of the array sub-units. HBF technology uses phase shifters for beamforming in the analog domain while keeping the number of antennas of the base station the same as a large number of (massive) multiple-input multiple-output communication scenarios (multi-input multi-output, MIMO), thereby reducing baseband The number of channels and intermediate frequency channels reduces the cost that increases with the number of channels.

However, through such HBF technology, the baseband can only obtain the air interface signal weighted and shaped by the phase shifter at each sounding reference signal (SRS) channel measurement time, and cannot obtain complete channel information.

Contents of the invention

Embodiments of the present application provide a method for measuring channel information and a communication device, so that network equipment can determine complete channel information of an element unit corresponding to a radio frequency channel according to the method for measuring channel information.

In the first aspect, the embodiment of the present application provides a method for channel information measurement, the method includes: the network device determines m orthogonal analog beam weights, where m is the number of subunits corresponding to a radio frequency channel; the network device determines based on the m Orthogonal analog beam weights, receive an uplink reference signal from a terminal device within one time domain symbol or within m consecutive time domain symbols; based on the uplink reference signal and m orthogonal analog beam weights, the network device obtains Full channel information.

Based on the channel information measurement method of the first aspect, the network device increases the speed of receiving the uplink reference signal based on m orthogonal analog beam weights, and can use the orthogonal mathematical characteristics of the analog beam weights to eliminate the influence of the analog beam weights, Obtain the complete channel information of the sub-unit corresponding to the radio frequency channel.

In a possible implementation manner, the network device obtains full channel information based on the uplink reference signal and an inverse matrix corresponding to the m orthogonal analog beam weights. By implementing this possible implementation, the network device receives the uplink reference signal through the analog beam weighted by the phase shifter, and then eliminates the adverse effect of the analog beam weight when obtaining full channel information according to the inverse matrix corresponding to the analog beam weight, The accuracy of the complete channel information of the element unit corresponding to the radio frequency channel is improved.

In a possible implementation manner, when the network device receives the uplink reference signal from the terminal device in one time domain symbol based on the m orthogonal analog beam weights, the one time domain symbol corresponds to m first A set of frequency domain resources, all of the m first frequency domain resource sets are in an unavailable state except for a second frequency domain resource set, the second frequency domain resource set is used to receive the uplink reference signal, and the second frequency domain resource The interval between adjacent frequency domain resources in the set is m. By implementing this possible implementation mode, the network device can quickly traverse m analog beams to receive uplink reference signals within one time domain symbol, which improves the efficiency of receiving uplink reference signals through the m analog beams, and further improves the efficiency of obtaining all channel information efficiency.

In a possible implementation manner, when the network device receives the uplink reference signal from the terminal device in m consecutive time domain symbols based on the m orthogonal analog beam weights, the m consecutive time domain symbols correspond to The third frequency domain resource set is used to receive the uplink reference signal, and adjacent frequency domain resources in the third frequency domain resource set may be continuous or discontinuous. By implementing this possible implementation mode, compared with the network equipment needing to call each analog beam to receive the uplink reference signal at a certain time period interval, the use of m consecutive time domain symbols can improve the reception of the uplink reference signal through the m analog beams. Signal efficiency, thereby improving the efficiency of obtaining full-channel information.

In a possible implementation manner, the network device obtains m analog beams based on the m orthogonal analog beam weights, and the analog beams are in one-to-one correspondence with the orthogonal analog beam weights; Within or within m consecutive time domain symbols, the uplink reference signal is received through the m analog beams. Wherein, the time values corresponding to each of the m analog beams are the same. By implementing this possible implementation manner, the uplink reference signal received by the network device through each analog beam remains consistent.

In a possible implementation manner, the network device obtains m pieces of channel information through the uplink reference signals received by the m analog beams, and each piece of channel information corresponds to an analog beam one by one. Further, the network device calculates full channel information based on the m pieces of channel information and the m pieces of orthogonal analog beam weights.

In a possible implementation manner, the relationship among all channel information, m orthogonal analog beam weights and m channel information satisfies: H _c =[H ₀ ...H _i ...H _m-1 ][w ₀ …w _i …w _m-1 ] ^-1 , where H _c is the full channel information, w _i is the i-th orthogonal analog beam weight, H _i is the channel information of the analog beam corresponding to w _i , and the i is an integer greater than or equal to 0 and less than or equal to m-1.

In a possible implementation manner, the network device determines the target analog beam weight according to the full channel information, and the target analog beam weight is used to weight the data of the physical downlink data channel PDSCH, and/or is used to receive the physical Data of the uplink data channel PUSCH. Compared with the manner in which the network device determines the weight of the target analog beam according to the received power of the uplink reference signal received by each analog beam, the accuracy of the weight of the target analog beam can be improved by implementing this possible implementation manner.

In a possible implementation manner, the network device determines the full-band covariance according to the full-channel information, and the relationship between the full-band covariance and the full-channel information satisfies: full-band covariance=∑ _k H _c ^H H _c ; where , H _c is the full channel information, H _c ^H is the conjugate matrix of the full channel information, k is the serial number of the frequency domain resource used to transmit the uplink reference signal; the network device determines the eigenvector of the full band covariance as the target simulation beam weights.

In a second aspect, the present application provides a communication device, which may be a device in a network device, or a device that can be matched with the network device. Wherein, the communication device may also be a system on a chip. The communication device can execute the method described in the first aspect. The functions of the communication device may be realized by hardware, or may be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the functions described above. This unit can be software and/or hardware. For operations and beneficial effects performed by the communication device, reference may be made to the method and beneficial effects described in the first aspect above, and repeated descriptions will not be repeated.

In a third aspect, the present application provides a communication device, and the communication device may be the network device in the foregoing method embodiment, or a chip provided in the network device. The communication device includes a communication interface, a processor, and optionally, a memory. Wherein, the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface. When the processor executes the computer programs or instructions, the communication device executes the method performed by the network device in the above method embodiments.

In a fourth aspect, the present application provides a computer-readable storage medium, the computer-readable storage medium is used to store computer-executable instructions, and when the computer-executable instructions are executed, the network device in the method described in the first aspect The execute method is implemented.

In a fifth aspect, the present application provides a computer program product including a computer program. When the computer program is executed, the method performed by the network device in the method described in the first aspect is realized.

Description of drawings

FIG. 1 is a schematic diagram of a sub-array structure of an HBF provided by the present application;

FIG. 2 is a schematic diagram of a system architecture provided by the present application;

FIG. 3 is a schematic diagram of a network device receiving an uplink reference signal through multiple analog beams provided by the present application;

FIG. 4 is a schematic flowchart of a method for measuring channel information provided by the present application;

FIG. 5 is a schematic diagram of frequency domain resource combing provided by the present application;

FIG. 6 is a schematic structural diagram of a communication device provided by the present application;

FIG. 7 is a schematic structural diagram of another communication device provided by the present application.

Detailed ways

The specific embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

The terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

In this application, "at least one (item)" means one or more, "multiple" means two or more, "at least two (items)" means two or three and three Above, "and/or" is used to describe the association relationship of associated objects, which means that there can be three kinds of relationships, for example, "A and/or B" can mean: only A exists, only B exists, and A and B exist at the same time A case where A and B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c ", where a, b, c can be single or multiple.

In order to better understand the embodiment of the present application, the following first introduces the system architecture involved in the embodiment of the present application:

The method provided by the embodiment of the present application can be applied to various communication systems, for example, it can be a machine-to-machine (M2M) communication system, an Internet of Things (IoT) system, a narrowband Internet of Things ( narrow band internet of things (NB-IoT) system, long term evolution (long term evolution, LTE) system, or the fifth generation (5th-generation, 5G) communication system, or a hybrid architecture of LTE and 5G, or It is a 5G new radio (new radio, NR) system, and a new communication system that will appear in the future communication development.

Please refer to FIG. 2 . FIG. 2 is a schematic diagram of a system architecture 20 provided by an embodiment of the present application. As shown in FIG. 2, the system architecture 20 includes a network device 201 and a terminal device 202, wherein the network device 201 and the terminal device 202 are connected in communication. It should be known that the number of network devices 201 and the number of terminal devices 202 shown in FIG. 2 are only illustrative, and cannot be regarded as limiting the application scenario of this application. The terminal equipment and network equipment involved in this application will be introduced in detail below.

1. Terminal equipment

The terminal device involved in the embodiment of the present application is an entity on the user side for receiving or transmitting signals. A terminal device may be a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like. End devices may also be other processing devices connected to wireless modems. The terminal device can communicate with a radio access network (radio access network, RAN). Terminal equipment can also be called wireless terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point (access point) ), remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment, UE) etc. Terminal equipment may be mobile terminal equipment, such as mobile phones (or called "cellular" phones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which Exchanging language and/or data with the radio access network. For example, the terminal equipment can also be a personal communication service (personal communication service, PCS) phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), and other equipment. Common terminal devices include, for example: automobiles, drones, robotic arms, mobile phones, tablet computers, notebook computers, handheld computers, mobile internet devices (mobile internet device, MID), wearable devices, such as smart watches, smart bracelets, Pedometer, etc., but the embodiment of the present application is not limited thereto.

2. Network equipment

The network equipment (or access network equipment) involved in the embodiment of the present application is a kind of entity used to transmit or receive signals on the network side, and can be used to connect the received air frame with the network protocol (internet protocol, IP) packets are interconverted and act as a router between the terminal device and the rest of the access network, which may include the IP network, etc. Access network devices can also coordinate attribute management for the air interface. For example, the access network device may be an evolved base station (evolutional Node B, eNB or e-NodeB) in LTE, or a new wireless controller (new radio controller, NR controller), or an ng-eNB, or It can be the gNode B (gNB) in the 5G system, it can also be a centralized unit, it can also be a new wireless base station, it can also be a remote radio module, it can also be a micro base station, or it can be a relay (relay), can also be a distributed unit (distributed unit), can also be a reception point (transmission reception point, TRP) or a transmission point (transmission point, TP) or any other wireless access device, but the implementation of this application Examples are not limited to this.

In order to facilitate the understanding of the content of the present solution, some terms in the embodiments of the present application will be explained below, so as to facilitate the understanding of those skilled in the art.

1. Orthogonal frequency division multiplexing (OFDM)

OFDM technology has frequency division characteristics, that is, in OFDM technology, the carrier is split into many sub-carriers (which can be understood as splitting a wide frequency into many small frequencies), and the data to be transmitted is mapped on each sub-carrier. The OFDM technology has multiplexing characteristics, that is, the data on each subcarrier in the OFDM system is transmitted at the same time, which is called time multiplexing. Multiple subcarriers in the OFDM system have an orthogonal characteristic, that is, multiple subcarriers coexist in the OFDM system, and each subcarrier is independent of each other (it can be understood that it will not affect each other).

The OFDM symbol period is inversely proportional to the subcarrier bandwidth. Under a certain cyclic prefix (CP) length, the smaller the subcarrier width, the larger the symbol period and the higher the spectral efficiency.

2. Beamforming

Beamforming is a signal preprocessing technology based on antenna arrays. Beamforming generates directional beams by adjusting the weighting coefficients of each array element in the antenna array, so that significant array gain can be obtained. Therefore, beamforming technology has great advantages in expanding coverage, improving edge throughput, and interference suppression. Simply, beamforming can be understood as changing the amplitude and phase of each transmitting antenna in the antenna array, so that the energy of all antennas transmitting signals can be concentrated in some directions and close to zero in other directions.

3. Analog beam

Multiple antennas in a multi-antenna array share a digital link channel, but each antenna has an independent radio frequency link channel, so each radio frequency link needs to perform independent amplitude and phase control of the transmitted signal on the radio frequency link Adjustment, the analog beamforming signal (also referred to as an analog beam hereinafter) is the beam after adjusting the phase and amplitude of the signal sent by the antenna in the radio frequency channel.

4. Hybrid analog beamforming (hybrid beamforming, HBF)

HBF is a beamforming technology that uses a mixture of digital and analog domains. HBF uses phase shifters to weight the signal in the analog domain, thereby reducing the number of baseband channels and IF channels. Specifically, the network device weights the signal through a predefined set of analog weights B={b ₀ , ..., _bi , ..., b _n-1 } to obtain analog beams corresponding to each analog weight. Wherein, each analog weight corresponds to the phases of n phase shifters, for example, b ₀ can be understood as the value of n phase shifters at a certain phase. Further, the network device may periodically receive a sounding reference signal (sounding reference signal, SRS) through each analog beam sequentially, and respectively calculate a reference signal receiving power (reference signal receiving power, RSRP) of the SRS received by each analog beam. Therefore, the network device can determine the analog beam corresponding to the maximum RSRP as the optimal analog beam, and use the analog beam to receive data transmitted on a physical uplink shared channel (PUSCH).

Exemplarily, the simulated weight set B={b ₀ , b ₁ , b ₂ , b ₃ }, the network device obtains beam b0, beam b1, beam b2 and beam b3 sequentially based on the simulated weight set, if 20 ms In one polling cycle, a schematic diagram of the network equipment polling each analog beam to receive the SRS is shown in FIG. 3 . Receive SRS through beam b0 within 0ms-20ms, receive SRS through beam b1 within 20ms-40ms, receive SRS through beam b2 within 40ms-60ms, and receive SRS through beam b3 within 60ms-80ms. Further, the network device calculates that the RSRP for receiving SRS by beam b0 is RSRP0, the RSRP for receiving SRS by beam b1 is RSRP1, the RSRP for receiving SRS by beam b2 is RSRP2, and the RSRP for receiving SRS by beam b3 is RSRP3. If RSRP2 is the maximum value among RSRP0, RSRP1, RSRP2, and RSRP3, determine beam b2 as the optimal analog beam, and use beam b2 to receive data transmitted by the PUSCH.

It can be seen that if the number of analog weights in the analog weight set B is small, there may be some areas where the optimal analog beamforming effect cannot be obtained; if the number of analog beams is large, the network device scanning polling cycle will be extended , resulting in the inability to quickly obtain the optimal analog beam of the terminal equipment. Moreover, every time the analog beam is used to receive SRS for channel measurement, only the air interface signal weighted and shaped by the phase shifter can be obtained, and the full channel information cannot be obtained, which may lead to inaccurate determination of the optimal analog beam.

This application determines the number of analog beam weights according to the number of radio frequency channel drive array sub-units, and eliminates the influence of analog beam weights in obtaining full channel information through the orthogonal characteristics of orthogonal analog beam weights, so that network equipment The full channel information of the air interface signal can be obtained.

The channel information measurement method and communication device provided by this application are further introduced below in conjunction with the accompanying drawings:

Please refer to FIG. 4 . FIG. 4 is a schematic flowchart of a method for measuring channel information provided by an embodiment of the present application. As shown in FIG. 4 , the method for measuring channel information includes the following steps 401 to 403 . The method shown in FIG. 4 may be executed by a network device or a chip in the network device. FIG. 4 uses a network device as an example for illustration. in:

401. The network device determines m orthogonal analog beam weights, where m is the number of subunits corresponding to one radio frequency channel.

In other words, the network device determines the number of orthogonal analog beam weights according to the number of array subunits corresponding to one radio frequency channel. What needs to be known is that the number of subunits corresponding to one radio frequency channel can be understood as the number of subunits connected to the radio frequency channel, or the number of subunits driven by the radio frequency channel. Among the multiple radio frequency channels corresponding to one network device, the number of subunits corresponding to each radio frequency channel may be the same or different, which is not limited in this application. Moreover, only one radio frequency channel is used for schematic illustration in this application, which cannot be regarded as a specific limitation to this application.

402. The network device receives the uplink reference signal from the terminal device within one time domain symbol or within m consecutive time domain symbols based on the m orthogonal analog beam weights.

It can be understood that the network device receives the uplink reference signal from the terminal device in one time domain unit based on the m orthogonal analog beam weights. Wherein, the uplink reference signal includes but not limited to SRS; the one time domain unit includes at least one time domain symbol (ie OFDM symbol). The following schematically illustrates the situation that the one time domain unit includes one OFDM symbol and the situation that the one time domain unit includes m OFDM symbols.

Case 1: the one time-domain unit includes one time-domain symbol.

The network device receives the uplink reference signal from the terminal device within one time domain symbol based on the m orthogonal analog beam weights. Wherein, the one time-domain symbol corresponds to m first frequency-domain resource sets, and all of the m first frequency-domain resource sets are unavailable except for the second frequency-domain resource set, and the second frequency-domain resource set is used for The uplink reference signal is received, and the interval between adjacent frequency domain resources in the second frequency domain resource set is m.

In other words, the network device sends configuration information to the terminal device, the configuration information is used to configure resources corresponding to the uplink reference signal, the configuration information configures a time domain symbol and m first frequency domain resource sets, and instructs the terminal device to configure resources according to the m The uplink reference signal is sent on one of the first frequency domain resource sets (that is, the second frequency domain resource set) in the first frequency domain resource sets. The first frequency domain resource set other than the second frequency domain resource set is in an unavailable state, that is, it cannot be used to send data (it can be understood that not only the terminal device cannot be used, but also other terminal devices except the terminal device Out of service).

In a possible implementation, the frequency domain resource is a subcarrier, and the network device combs the subcarrier corresponding to the one time domain symbol according to the data m to obtain m first frequency domain resource sets. Further, the network device determines a second frequency domain resource set from the m first frequency domain resource sets, and determines the first frequency domain resource set except the second frequency domain resource set as an unavailable state.

In an example, the frequency domain resource corresponding to one OFDM symbol is subcarrier 0 to subcarrier 127. If m is 2, the network device combs subcarriers 0 to 127 according to the number 2 to obtain two first frequency domain resource sets, as shown in Figure 5. When m is 2, the two first frequency domain resource sets are The domain resource set includes: {subcarrier 0, subcarrier 2, subcarrier 4, ..., subcarrier 126}, {subcarrier 1, subcarrier 3, subcarrier 5, ..., subcarrier 127}. Further, the network device may determine {subcarrier 0, subcarrier 2, subcarrier 4, ..., subcarrier 126} as the second frequency domain resource set, and the sequence numbers of adjacent frequency domain resources in the second frequency domain resource set The difference between them is m (it can be understood that the interval between adjacent frequency domain resources is m), for example, in the second frequency domain resource set, subcarrier 0 and subcarrier 2 are adjacent, and subcarrier 2 and subcarrier 0 are adjacent The sequence number difference is 2 (that is, m). The network device determines {subcarrier 1, subcarrier 3, subcarrier 5, ..., subcarrier 127} as an unavailable state.

In another example, the frequency domain resource corresponding to one OFDM symbol is subcarrier 0 to subcarrier 127. If m is 4, the network device combs subcarriers 0 to 127 according to the number of 4 to obtain four first frequency domain resource sets, as shown in Figure 5. When m is 4, the four first frequency domain resource sets are The domain resource set includes: {subcarrier 0, subcarrier 4, ..., subcarrier 124}, {subcarrier 1, subcarrier 5, ..., subcarrier 125}, {subcarrier 2, subcarrier 6, ..., subcarrier 126}, {subcarrier 3, subcarrier 7, ..., subcarrier 127}. Further, the network device may determine {subcarrier 0, subcarrier 4, ..., subcarrier 124} as the second set of frequency domain resources, and the difference between sequence numbers of adjacent frequency domain resources in the second set of frequency domain resources The value is m (it can be understood that the interval between adjacent frequency domain resources is m), for example, in the second frequency domain resource set, subcarrier 0 and subcarrier 4 are adjacent, and the sequence number difference between subcarrier 4 and subcarrier 0 is 4 (ie m). The network device sets the first frequency domain resource set except the second frequency domain resource set: {subcarrier 1, subcarrier 5, ..., subcarrier 125}, {subcarrier 2, subcarrier 6, ..., subcarrier 126} , {subcarrier 3, subcarrier 7, ..., subcarrier 127} are determined to be unavailable.

Case 2: the one time domain unit includes m consecutive time domain symbols.

The network device receives the uplink reference signal from the terminal device within m consecutive time domain symbols based on the m orthogonal analog beam weights. Wherein, the third frequency domain resource set corresponding to the m consecutive time domain symbols is used to receive the uplink reference signal, and adjacent frequency domain resources in the third frequency domain resource set may be continuous or discontinuous. That is, it can be understood that, in one case, the network device can comb the frequency domain resources corresponding to the m consecutive time domain symbols according to the preset combing fraction to obtain a plurality of fourth frequency domain resource sets, and the network device can obtain multiple sets of fourth frequency domain resources from the The third frequency domain resource set is determined to be used to receive the uplink reference signal among the plurality of fourth frequency domain resource sets. In this case, the adjacent frequency domain resources in the third frequency domain resource set are discontinuous, and the adjacent frequency domain resources The spacing between frequency domain resources is related to the comb number. In another case, the network device may use the frequency domain resources corresponding to the m consecutive time domain symbols to receive the uplink reference signal. In this case, the frequency domain resources corresponding to the m consecutive time domain symbols form the third A frequency domain resource set, where adjacent frequency domain resources in the third frequency domain resource set are continuous.

For example, taking the continuity between adjacent frequency domain resources in the third frequency domain resource set as an example, when m is 2, the network device configures two time domain symbols and frequency domain resources corresponding to the two time domain symbols for the uplink reference signal (ie the third frequency domain resource set). When m is 4, the network device configures 4 time-domain symbols and frequency-domain resources corresponding to the 4 time-domain symbols (ie, a third frequency-domain resource set) for the uplink reference signal.

After describing which frequency domain resource positions in a time domain unit the network device specifically receives the uplink reference signal, the manner in which the network device receives the uplink reference signal in the time domain unit is described below.

The network device obtains m analog beams based on the m orthogonal analog beam weights, and the analog beams are in one-to-one correspondence with the orthogonal analog beam weights. Further, the network device receives the uplink signal through the m analog beams in a time domain unit, where the time value corresponding to each analog beam in the time domain unit is the same. The following schematically illustrates the situation that the one time domain unit includes one OFDM symbol and the situation that the one time domain unit includes m OFDM symbols.

Case 1: the one time-domain unit includes one time-domain symbol.

The network device receives the uplink reference signal through the m analog beams, and the time value corresponding to each analog beam is the time domain symbol

Exemplarily, m is 4, and the set of orthogonal analog beam weights is W={w ₀ , w ₁ , w ₂ , w ₃ }, and the network device sequentially obtains the analog beam w0 and the analog beam w1 based on the set of analog beam weights , simulated beam w2 and simulated beam w3. In this case, the network device divides the time-domain symbol into four equal parts:

symbol

symbol,

symbol

symbol,

symbol

symbol,

symbol

symbol. Furthermore, network devices are

symbol

The symbol receives the uplink reference signal through the analog beam w0, and the network equipment is in

symbol

The symbol receives the uplink reference signal through the analog beam w1, and the network equipment is in

symbol

The symbol receives the uplink reference signal through the analog beam w2, and the network equipment is in

symbol

The symbol receives the uplink reference signal through the analog beam w3.

In this case, the network device can quickly traverse m analog beams to receive uplink reference signals within one time domain symbol, which improves the efficiency of receiving uplink reference signals through the m analog beams, thereby improving the efficiency of obtaining full channel information. efficiency.

What needs to be known is that after the network device combs the frequency domain resources corresponding to the time domain symbol, within the time domain symbol, the network device quickly switches m analog beams to receive the uplink at intervals of 1/m time domain symbols. The reference signal does not require the terminal device to perceive this process, and the specific reasons are as follows.

Since the relationship between the time domain signal and the frequency domain signal satisfies the formula (1).

Wherein, f(n) is the time-domain sampling point value in a time-domain symbol, N is the number of sampling points in a time-domain symbol, n is the sampling point sequence number in a time-domain symbol, and the value range of n is 0, 1, 2, 3, ..., N-1. F(k) is a frequency domain signal, k is a subcarrier sequence number of a frequency domain resource, and a value range of k is 0, 1, 2, 3, ..., N-1.

After the network device combs the frequency domain resources according to the number m in a time domain symbol, the network device receives the uplink reference on the second frequency domain resource set in the m first time domain resource sets corresponding to the time domain symbol Signal. Referring to FIG. 5 , taking m=4 as an example, the interval between the frequency domain resources used to receive the uplink reference signal among the frequency domain resources corresponding to the time domain symbol is 4, while other frequency domain resources are unavailable. That is, for the frequency domain signal F(k), when k is not an integer multiple of 4, F(k)=0, and only when k is an integer multiple of 4, F(k)≠0. In other words, the relationship of F(k=4i)≠0 is established, where i is the subcarrier sequence number used to send the uplink reference signal after the frequency domain resource is combed according to m=4, and the value range of i is 0, 1, 2, 3, ...,

Putting k=4i into the formula (1), the relationship between the time domain signal and the frequency domain signal of the uplink reference signal received by the network device within one time domain symbol satisfies the formula (2).

Among them, f(n) is the time domain sampling point value of the network device in a time domain symbol, N is the sampling point number of the uplink reference signal in a time domain symbol, and n is the sampling point sequence number of the uplink reference signal in a time domain symbol, The value range of n is 0, 1, 2, 3, ..., N-1. F(4i) is the frequency domain signal of the uplink reference signal, i is the subcarrier sequence number used to send the uplink reference signal after the frequency domain resources are combed according to m=4, and the value range of i is 0, 1, 2, 3, ...,

The f(n) sequence of formula (2) has the characteristics of formula (3):

where n'=0,1,2,...,

It can be seen that the time-domain transmission signal f(n) of the terminal device in the time-domain symbol naturally satisfies the feature of repetition every 1/4 symbol interval.

Case 2: the one time domain unit includes m consecutive time domain symbols.

The network device receives the uplink reference signal through the m analog beams within m consecutive time domain symbols, and the time value corresponding to each analog beam is 1 time domain symbol. Exemplarily, m is 4, and the set of orthogonal analog beam weights is W={w ₀ , w ₁ , w ₂ , w ₃ }, and the network device sequentially obtains the analog beam w0 and the analog beam w1 based on the set of analog beam weights , an analog beam w2 and an analog beam w3, the four consecutive time domain symbols are OFDM symbol 0, OFDM symbol 1, OFDM symbol 2 and OFDM symbol 3. In this case, the network device receives the uplink reference signal through the analog beam w0 in OFDM symbol 0, the network device receives the uplink reference signal through the analog beam w1 in OFDM symbol 1, and the network device receives the uplink reference signal through the analog beam w2 in OFDM symbol 2 For the uplink reference signal, the network device receives the uplink reference signal through the analog beam w3 in the OFDM symbol 3 .

403. The network device obtains full channel information based on the uplink reference signal and the m orthogonal analog beam weights.

The network device obtains full channel information based on the uplink reference signal and the inverse matrix corresponding to the m orthogonal analog beam weights. In other words, the network device obtains m analog beams based on m orthogonal analog beam weights, and further the network device receives the uplink reference signal through the m analog beams, which can be understood as the channel information of the uplink reference signal is multiplied by m orthogonal The matrix corresponding to the simulated beam weight value is multiplied by the inverse matrix corresponding to the m orthogonal simulated beam weight values, and according to the characteristics of the orthogonal matrix—the product of the orthogonal matrix and the inverse matrix corresponding to the orthogonal matrix is E, so that The influence of analog beam weights on channel information is eliminated. Wherein, the full channel information may be understood as the channel information of each sub-unit connected (or corresponding, or driven) by the radio frequency channel.

In a possible implementation, the network device obtains m pieces of channel information through the uplink reference signals received by the m analog beams, and each channel information corresponds to an analog beam one by one. Further, the network device calculates full channel information according to the m pieces of channel information and the m pieces of orthogonal analog beam weights.

Specifically, after the network device receives the uplink reference signal through the m analog beams, for each analog beam, the network device calculates the channel information corresponding to the analog beam according to the uplink reference signal received by the analog beam, further, the network The device calculates the full channel information according to the channel information corresponding to each analog beam and the weights of the m orthogonal analog beams. Wherein, the uplink reference signal received by the analog beam and the channel information corresponding to the analog beam satisfy the relationship shown in formula (4).

H _i =F _i (k)×S ^* (4)

Among them, H _i is the channel information of the i-th orthogonal analog beam weight corresponding to the analog beam, F _i (k) is the uplink reference signal received by the i-th orthogonal analog beam weight corresponding to the analog beam, and i is greater than or equal to 0 and an integer less than or equal to m-1, S ^* is the conjugate of the pilot sequence S.

For example, m is 4, the set of orthogonal analog beam weights is W={w ₀ , w ₁ , w ₂ , w ₃ }, and the network device sequentially obtains the analog beam w0, the analog beam w1, the analog Beam w2 and simulated beam w3. The network device receives the uplink reference signal through the analog beam w0, the analog beam w1, the analog beam w2, and the analog beam w3, and the network device obtains the channel information H ₀ corresponding to the analog beam w0 and the channel corresponding to the analog beam w1 according to the aforementioned formula (4). Information _H ₁ , channel information H 2 corresponding to the analog beam w2, and channel information H ₃ corresponding to the analog beam w3. Further, the network device calculates the full channel information according to the channel information H ₀ , channel information H ₁ , channel information H ₂ , and channel information H ₃ , and the m orthogonal analog beam weights.

Specifically, the relationship among the full channel information, the m pieces of channel information, and the m pieces of orthogonal analog beam weights satisfies the formula (5).

H _c ＝[H ₀ ...H _i ...H _m-1 ][w ₀ ...w _i ...w _m-1 ] ^-1 (5)

Among them, H _c is the full channel information, w _i is the i-th orthogonal analog beam weight, H _i is the channel information of the analog beam corresponding to w _i , and i is an integer greater than or equal to 0 and less than or equal to m-1.

Through such a method, the network device can use the orthogonality characteristic of the orthogonal analog beam weight to eliminate the influence of the analog beam weight when obtaining full channel information, and obtain the channel information of the element unit corresponding to the radio frequency channel.

In an application scenario, the network device receives the uplink reference signal based on the orthogonal analog beam weight through the phase shifter, and obtains the full channel information according to the uplink reference signal and the orthogonal analog beam weight, and further, the network device can according to the The whole channel information is used to determine a target analog beam weight, where the target analog beam weight is used to weight the data of the PDSCH, and/or used to receive the data of the PUSCH. It can be understood that, in such an application scenario, the network device may determine a target analog beam weight according to the full channel information, and use it to receive PUSCH data. And because the uplink channel and the downlink channel use the same frequency band, the network device can also use the target analog beam weights for sending the PDSCH according to the mutuality between the uplink and downlink channels (that is, the mutuality between the PUSCH channel and the PDSCH channel). data.

Specifically, the network device first obtains the full-band covariance according to the full-channel information as shown in formula (6).

Full band covariance = ∑ _k H _c ^H H _c (6)

Wherein, H _c is the full channel information, H _c ^H is the conjugate matrix of the full channel information, and k is the sequence number of the frequency domain resource (eg subcarrier) used to transmit the uplink reference signal.

Further, the network device calculates an eigenvector of the full-band covariance, and determines the eigenvector as the target analog beam weight.

It can be seen that through this method, the network device can use the complete channel information of each sub-unit corresponding to the radio frequency channel, and determine the optimal analog beam weight according to the complete channel information, which improves the accuracy of the analog beam weight.

It should be noted that in specific implementation, some steps in the drawings can be selected for implementation, and the order of the steps in the illustrations can also be adjusted for implementation, which is not limited in the present application. It should be understood that performing some of the steps in the illustration or adjusting the order of the steps for specific implementation falls within the protection scope of the present application.

Referring to FIG. 6 , FIG. 6 shows a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device shown in FIG. 6 may be used to implement part or all of the functions of the network device in the embodiment corresponding to the above channel information measurement method. The device may be a network device, or a device in the network device, or a device that can be matched with the network device. Wherein, the communication transposition may also be a chip system. The communication device shown in FIG. 6 may include a transmission module 601 and a processing module 602 . in:

The processing module 602 is used to determine m orthogonal analog beam weights, where m is the number of array units corresponding to a radio frequency channel; the transmission module 601 is used to determine m orthogonal analog beam weights within a time domain symbol Or receive the uplink reference signal from the terminal device within m consecutive time domain symbols; the processing module 602 is further configured to obtain full channel information based on the uplink reference signal and m orthogonal analog beam weights.

In a possible implementation, the processing module 602 is configured to obtain full channel information based on the uplink reference signal and the inverse matrix corresponding to the m orthogonal analog beam weights.

In a possible implementation, the transmission module 601 is used to receive the uplink reference signal from the terminal device in one time domain symbol based on m orthogonal analog beam weights; the one time domain symbol corresponds to m The first frequency domain resource set, all m first frequency domain resource sets except the second frequency domain resource set are in an unavailable state, the second frequency domain resource set is used to receive uplink reference signals, and the second frequency domain resource set The interval between adjacent frequency domain resources is m.

In a possible implementation, the transmission module 601 is used to receive the uplink reference signal from the terminal device in m consecutive time domain symbols based on m orthogonal analog beam weights; the m continuous time domain symbols The uplink reference signal is received in the third frequency domain resource set corresponding to the symbol, and adjacent frequency domain resources in the third frequency domain resource set are continuous.

In a possible implementation, the processing module 602 is configured to obtain m analog beams based on m orthogonal analog beam weights; the analog beams correspond to the orthogonal analog beam weights one by one; the transmission module 601 is configured to obtain m analog beams in a In a time-domain symbol or within m consecutive time-domain symbols, the uplink reference signal is received through m analog beams; wherein, the time value corresponding to each analog beam in the m analog beams is the same.

In a possible implementation, the processing module 602 is configured to obtain m channel information based on uplink reference signals received through m analog beams, and each channel information corresponds to an analog beam one-to-one; the processing module is configured to obtain m channel information based on the m analog beams The channel information and m orthogonal analog beam weights are used to calculate the full channel information.

In a possible implementation, the relationship among the full channel information, m orthogonal analog beam weights and m channel information satisfies: H _c =[H ₀ ...H _i ...H _m-1 ][w ₀ ...w _i …w _m-1 ] ^-1 , where H _c is the full channel information, w _i is the i-th orthogonal analog beam weight, H _i is the channel information of the analog beam corresponding to w _i , and the i is An integer greater than or equal to 0 and less than or equal to m-1.

In a possible implementation, the processing module 602 is further configured to determine the target analog beam weight according to the full channel information, and the target analog beam weight is used for weighting the data of the physical downlink data channel PDSCH, and/or for receiving Data of the physical uplink data channel PUSCH.

In a possible implementation, the processing module 602 is configured to determine the full-band covariance according to the full-channel information, and the relationship between the full-band covariance and the full-channel information satisfies: full-band covariance = ∑ _k H _c ^H H _c ; Wherein, H _c is the full channel information, H _c ^H is the conjugate matrix of the full channel information, and k is the sequence number of the frequency domain resource used to transmit the uplink reference signal; the processing module 602 is used to convert the feature of the full band covariance Vector, identifying beam weights for the target simulation.

For more detailed descriptions of the transmission module 601 and the processing module 602, reference may be made to relevant descriptions in the foregoing method embodiments, and no further description is given here.

Please refer to FIG. 7 . FIG. 7 is a schematic structural diagram of a communication device 700 provided in the present application. The communication device 700 includes a processor 710 and an interface circuit 720 . The processor 710 and the interface circuit 720 are coupled to each other. It can be understood that the interface circuit 720 may be a transceiver or an input-output interface. Optionally, the communication device 700 may further include a memory 730 for storing instructions executed by the processor 710, or storing input data required by the processor 710 to execute the instructions, or storing data generated by the processor 710 after executing the instructions.

When the communication device 700 is used to implement the method in the above method embodiment, the processor 710 is used to execute the function of the processing module 602, and the interface circuit 720 is used to execute the function of the transmission module 601 above.

When the above communication device is a chip applied to network equipment, the network equipment chip implements the functions of the network equipment in the above method embodiments. The network device chip receives information from other modules in the network device (such as radio frequency modules or antennas), and the information is sent to the network device by the terminal device; or, the network device chip sends information to other modules in the network device (such as radio frequency modules or antenna) to send information, which is sent by the network device to the terminal device.

It can be understood that the processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor can be a microprocessor, or any conventional processor.

The method steps in the embodiments of the present application may be implemented by means of hardware, or may be implemented by means of a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory (random access memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), programmable read-only memory (programmable ROM) , PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or known in the art any other form of storage medium. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and storage medium can be located in the ASIC. In addition, the ASIC may be located in the access network device or the terminal device. Certainly, the processor and the storage medium may also exist in the access network device or the terminal device as discrete components.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs or instructions. When the computer program or instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer program or instructions may be stored in or transmitted via a computer-readable storage medium. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server integrating one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a DVD; it may also be a semiconductor medium, such as a solid state disk (solid state disk, SSD).

In each embodiment of the present application, if there is no special explanation and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

It can be understood that the various numbers involved in the embodiments of the present application are only for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial numbers of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic.

The embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed, the method performed by the network device in the foregoing method embodiments is implemented.

An embodiment of the present application further provides a computer program product, where the computer program product includes a computer program, and when the computer program is executed, the method performed by the network device in the above method embodiment is implemented.

The embodiment of the present application also provides a communication system, which includes a terminal device and a network device. Wherein, the network device is configured to execute the method performed by the network device in the foregoing method embodiments.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Depending on the application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by this application.

The descriptions of the various embodiments provided in this application can refer to each other, and the descriptions of each embodiment have their own emphases. For the parts that are not described in detail in a certain embodiment, you can refer to the relevant descriptions of other embodiments. For the convenience and brevity of description, for example, regarding the functions of the devices and equipment and the executed steps provided by the embodiments of the present application, reference may be made to the relevant descriptions of the method embodiments of the present application. May be cross-referenced, combined or cited.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit it; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. scope.

Claims

A method for channel information measurement, characterized in that the method comprises:

The network device determines m orthogonal analog beam weights, where m is the number of array subunits corresponding to a radio frequency channel;

The network device receives the uplink reference signal from the terminal device within one time domain symbol or within m consecutive time domain symbols based on the m orthogonal analog beam weights;

The network device obtains full channel information based on the uplink reference signal and the m orthogonal analog beam weights.
The method according to claim 1, wherein the network device obtains full channel information based on the uplink reference signal and the m orthogonal analog beam weights, including:

The network device obtains full channel information based on the uplink reference signal and an inverse matrix corresponding to the m orthogonal analog beam weights.
The method according to claim 1 or 2, wherein the network device receives the uplink reference signal from the terminal device in the one time domain symbol based on the m orthogonal analog beam weights Next, the one time domain symbol corresponds to m first frequency domain resource sets, all of the m first frequency domain resource sets are unavailable except for the second frequency domain resource set, and the second frequency domain resource The set is used to receive the uplink reference signal, and the interval between adjacent frequency domain resources in the second frequency domain resource set is m.
The method according to claim 1 or 2, wherein the network device receives the uplink reference signal from the terminal device in the m consecutive time domain symbols based on the m orthogonal analog beam weights In the case of , the third frequency domain resource set corresponding to the m consecutive time domain symbols is used to receive the uplink reference signal, and the adjacent frequency domain resources in the third frequency domain resource set are continuous or discontinuous.
The method according to any one of claims 1-4, characterized in that, based on the m orthogonal analog beam weights, the network device receives within one time domain symbol or within m consecutive time domain symbols Uplink reference signals from terminal equipment, including:

The network device obtains m analog beams based on the m orthogonal analog beam weights; the analog beams are in one-to-one correspondence with the orthogonal analog beam weights;

The network device receives the uplink reference signal through the m analog beams within one time domain symbol or within m consecutive time domain symbols; wherein, the time corresponding to each analog beam in the m analog beams same value.
The method according to claim 5, wherein the network device obtains full channel information based on the uplink reference signal and the m orthogonal analog beam weights, including:

The network device obtains m channel information through the uplink reference signal received by the m analog beams, and each channel information corresponds to an analog beam one by one;

Calculate full channel information based on the m pieces of channel information and the m pieces of orthogonal analog beam weights.
The method according to claim 6, wherein the relationship between the full channel information, the m orthogonal analog beam weights and the m channel information satisfies:

H c ＝[H 0 …H i …H m-1 ][w 0 …w i …w m-1 ] -1 , where H c is the full channel information, and w i is the ith orthogonal analog beam weight value, H i is the channel information of the analog beam corresponding to the w i , and the i is an integer greater than or equal to 0 and less than or equal to m-1.
The method according to any one of claims 1-7, wherein the method further comprises:

The network device determines a target analog beam weight according to the full channel information, and the target analog beam weight is used for weighting the data of the physical downlink data channel PDSCH, and/or for receiving the data of the physical uplink data channel PUSCH data.
The method according to claim 8, wherein the network device determines the target analog beam weight according to the full channel information, including:

The network device determines the full-band covariance according to the full-channel information; the relationship between the full-channel information and the full-band covariance satisfies: full-band covariance = ∑ k H c H H c ; where H c is Full channel information, H c H is the conjugate matrix of the full channel information, and k is the serial number of the frequency domain resource used to transmit the uplink reference signal;

The network device determines the eigenvector of the full-band covariance as the target analog beam weight.
A communication device, characterized in that the communication device includes:

A processing module, configured to determine m orthogonal analog beam weights, where m is the number of array subunits corresponding to a radio frequency channel;

A transmission module, configured to receive an uplink reference signal from a terminal device within one time domain symbol or within m consecutive time domain symbols based on the m orthogonal analog beam weights;

The processing module is further configured to obtain full channel information based on the uplink reference signal and the m orthogonal analog beam weights.
The device according to claim 10, characterized in that,

The processing module is configured to obtain full channel information based on the uplink reference signal and the inverse matrix corresponding to the m orthogonal analog beam weights.
The device according to claim 10 or 11, wherein the transmission module is configured to receive the uplink reference signal from the terminal device within one time domain symbol based on the m orthogonal analog beam weights In the case of , the one time-domain symbol corresponds to m first frequency-domain resource sets, all of the m first frequency-domain resource sets are unavailable except for the second frequency-domain resource set, and the second frequency-domain resource set The domain resource set is used to receive the uplink reference signal, and the interval between adjacent frequency domain resources in the second frequency domain resource set is m.
The device according to claim 10 or 11, wherein the transmission module is configured to receive the uplink from the terminal device within m consecutive time domain symbols based on the m orthogonal analog beam weights In the case of a reference signal, the uplink reference signal is received in the third frequency domain resource set corresponding to the m consecutive time domain symbols, and the adjacent frequency domain resources in the third frequency domain resource set are continuous or not continuous.
Device according to claim 12 or 13, characterized in that,

The processing module is configured to obtain m analog beams based on the m orthogonal analog beam weights; the analog beams are in one-to-one correspondence with the orthogonal analog beam weights;

The transmission module is configured to receive the uplink reference signal through the m analog beams within one time domain symbol or within m consecutive time domain symbols; wherein, each of the m analog beams The corresponding time values are the same.
The device according to claim 14, wherein the network device obtains full channel information based on the uplink reference signal and the m orthogonal analog beam weights, including:

The processing module is configured to obtain m channel information through the uplink reference signal received by the m analog beams, and each channel information corresponds to an analog beam one by one;

The processing module is configured to calculate full channel information based on the m pieces of channel information and the m pieces of orthogonal analog beam weights.
The device according to claim 15, wherein the relationship between the full channel information, the m orthogonal analog beam weights and the m channel information satisfies:

H c ＝[H 0 …H i …H m-1 ][w 0 …w i …w m-1 ] -1 , where H c is the full channel information, and w i is the ith orthogonal analog beam weight value, H i is the channel information of the analog beam corresponding to the w i , and the i is an integer greater than or equal to 0 and less than or equal to m-1.
The device according to any one of claims 10-16, characterized in that,

The processing module is further configured to determine a target analog beam weight according to the full channel information, and the target analog beam weight is used to weight the data of the physical downlink data channel PDSCH, and/or is used to receive the physical uplink The data of the data channel PUSCH.
The device according to claim 17, characterized in that,

The processing module is configured to determine the full-band covariance according to the full-channel information; the relationship between the full-channel information and the full-band covariance satisfies: full-band covariance = ∑ k H c H H c ; wherein, H c is the full channel information, H c H is the conjugate matrix of the full channel information, and k is the sequence number of the frequency domain resource used to transmit the uplink reference signal;

The processing module is configured to determine the eigenvector of the full-band covariance as the target analog beam weight.
A communication device, characterized in that it includes a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor implements the method according to any one of claims 1-9 through a logic circuit or executing code instructions.
A communication device, characterized in that it is used to implement the method according to any one of claims 1-9.
A computer-readable storage medium, characterized in that computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, the implementation of any one of claims 1-9 Methods.
A computer program product, characterized by comprising instructions, when the instructions are executed, the method according to any one of claims 1-9 is realized.