WO2017114054A1 - Method and device for determining analog beam - Google Patents

Abstract

Disclosed in the present application are a method and device for determining an analog beam, used for solving the problem of how to achieve analog forming in digital/analog hybrid beamforming, for which a solution does not yet exist. The method comprises: a terminal measuring a reference signal of each analog beam in a preset first set of analog beams; according to the measurement result, said terminal selecting from said first set of analog beams an analog beam to serve as a first analog beam used by the terminal; the terminal sending the number information of said first analog beam to the base station. The terminal measures a reference signal of each analog beam in the first set of analog beams, that is, performs channel measurement and learns in advance the channel quality that could be experienced when a service is being transmitted, thereby ensuring accuracy in the measurement of channel quality.

Description

Method and device for determining analog beam

The present application claims priority to Chinese Patent Application No. 201511001288.5, entitled "A Method and Apparatus for Determining Analog Beams", filed on December 28, 2015, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for determining an analog beam.

Background technique

In view of the important role of Multiple Input Multiple Output (MIMO) technology in improving peak rate and system spectrum utilization, long-term evolution (LTE)/LTE-A (LTE-Advanced) and other wireless access technologies The standards are based on MIMO + Orthogonal Frequency Division Multiplexing (OFDM) technology. The performance gain of MIMO technology comes from the spatial freedom that multi-antenna systems can obtain. Therefore, one of the most important evolution directions of MIMO technology in the development of standardization is the expansion of dimensions. In LTE Rel-8, up to 4 layers of MIMO transmission can be supported. Rel-9 focuses on multi-user MIMO (Multi-User MIMO, also known as MU-MIMO) technology, and supports up to four downlink data layers in MU-MIMO transmission in Transmission Mode (TM)-8. . Rel-10 is further improved by the introduction of 8-port Channel State Information-Reference Signals (CSI-RS), UE-specific Reference Signal (URS) and multi-granularity codebooks. The spatial resolution of the channel state information is further extended to the transmission capability of single-user MIMO (Single-User MIMO, also referred to as SU-MIMO) to a maximum of 8 data layers.

In a base station antenna system using a passive passive antenna system (PAS) structure, multiple antenna ports (each port corresponding to an independent RF-IF-baseband channel) are horizontally arranged, and the vertical dimension corresponding to each port Multiple layers are connected by RF cables. Therefore, the existing MIMO technology can only optimize the horizontal dimensional characteristics of each terminal signal in the horizontal dimension by adjusting the relative amplitude/phase between different ports. In the vertical dimension, only a uniform sector level shaping can be adopted. . After the introduction of Active Antenna System (AAS) technology in the mobile communication system, the base station antenna system can obtain greater freedom in the vertical dimension, and can realize the signal optimization of the User Equipment (UE) level in the three-dimensional space.

Based on the above research, standardization and antenna technology development, the industry is further advancing MIMO technology in the direction of three-dimensional and large-scale. Currently, 3GPP is conducting research projects on 3D channel modeling, and it is expected to continue to perform 8 Elevation Beam Forming (EBF) and more than 8 ports (such as 16, 32 or 64). Research on Full Dimension MIMO (FD-MIMO) Technology Research and standardization work. And the academic community is more forward-looking research and testing work on MIMO technology based on larger antenna arrays (containing one hundred or hundreds or even more). Academic research and preliminary channel measurement results show that massive MIMO (Massive MIMO) technology will greatly improve system bandwidth utilization efficiency and support a larger number of access users. Therefore, major research organizations regard Massive MIMO technology as one of the most promising physical layer technologies in the next generation of mobile communication systems.

Massive MIMO technology requires the use of large-scale antenna arrays. Although an all-digital array can achieve maximum spatial resolution and optimal MU-MIMO performance, this architecture requires a large number of analog-to-digital (AD)/digital-to-analog (DA) conversion devices and a large number of complete RF-baseband processing channels. Whether it is equipment cost or baseband processing complexity will be a huge burden. In order to reduce the implementation cost and equipment complexity of Massive MIMO technology, a digital-analog hybrid beamforming technique is proposed. The so-called digital-analog hybrid beamforming refers to adding a first-order beamforming, that is, analog shaping, to the radio frequency signal near the front end of the antenna system based on the conventional digital domain beamforming, as shown in FIG. Analog shaping enables a relatively coarse match between the transmitted signal and the channel in a relatively simple manner. The dimension of the equivalent channel formed after the analog shaping is smaller than the actual number of antennas, so the required AD/DA conversion device, the number of digital channels, and the corresponding baseband processing complexity can be greatly reduced. The residual interference of the analog shaped portion can be processed again in the digital domain to ensure the quality of the MU-MIMO transmission.

Compared with full digital shaping, digital-analog hybrid beamforming is a compromise between performance and complexity. It has a high practical prospect in systems with high bandwidth and large number of antennas. In MIMO technology, especially for MU-MIMO technology, the channel state information accuracy that can be obtained by the network side directly determines the accuracy of precoding/beamforming and the performance of the scheduling algorithm, thereby affecting the overall system performance. According to the current LTE signal structure, since the reference signals are all inserted in the baseband, the channel state required for digital shaping can be obtained by channel estimation. However, for the analog shaping part, since there is no way to estimate the reference signal inserted by the baseband, it is impossible to directly use the channel state information obtained by the digital domain for the FDD or the TDD to perform analog shaping.

In summary, there is currently no solution for how to implement analog shaping in digital-analog hybrid beamforming.

Summary of the invention

Embodiments of the present invention provide a method and an apparatus for determining an analog beam, which are used to solve the problem of how to implement analog shaping in digital-analog hybrid beamforming.

In a first aspect, a method of determining an analog beam includes:

The terminal respectively measures the reference signal on each of the preset first simulated beam sets;

The terminal selects, according to the measurement result, an analog beam from the first set of analog beams as the first analog beam used by the terminal;

The terminal sends the number information of the first analog beam to the base station.

Optionally, before the terminal separately measures the reference signal on each of the preset first simulated beam sets, the terminal further includes:

Receiving, by the terminal, the reference signal through different analog beams in the first set of analog beams at different times; or

Receiving, by the terminal, the reference signal by using different analog beams in the first set of analog beams on different subcarriers; or

The terminal receives the reference signal through different analog beams in the first set of analog beams at different times and on different subcarriers.

Based on any of the foregoing embodiments, after the terminal sends the number information of the first analog beam to the base station, the method further includes:

Receiving, by the terminal, a second set of analog beams configured by the base station, where an analog beam in the second set of analog beams is selected from the first set of analog beams and centered on the first analog beam A set of analog beamforming that is set at an angular step distance from the first analog beam.

Optionally, after the terminal receives the second analog beam set configured by the base station, the method further includes:

The terminal respectively measures a reference signal on each of the second analog beam sets;

The terminal selects, according to the measurement result, an analog beam from the second set of analog beams as the second analog beam used by the terminal;

The terminal sends the number information of the second analog beam to the base station.

Optionally, before the measuring, by the terminal, the reference signal on each of the second analog beam sets, the method further includes:

Receiving, by the terminal, the reference signal through different analog beams in the second set of analog beams at different times; or

Receiving, by the terminal, the reference signal by using different analog beams in the second set of analog beams on different subcarriers; or

The terminal receives the reference signal through different analog beams in the second set of analog beams at different times and on different subcarriers.

In the embodiment of the present invention, since the terminal separately measures the reference signal on each analog beam in the first analog beam set, that is, the channel measurement is performed, and the channel quality that may be experienced during the service transmission is known in advance, thereby ensuring The accuracy of the channel quality measurement; in addition, during the measurement process, the terminal can know the shaping effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set. Improves the accuracy of analog shaping.

In a second aspect, a method of determining an analog beam includes:

For each terminal in the network, the base station separately measures the reference signal sent by the terminal on each of the preset first analog beam sets;

Selecting, by the base station, a set of the first analog beam set according to a measurement result corresponding to each analog beam The analog beams serve as the first analog beam used by the terminal.

Optionally, before the detecting, by the base station, the reference signal sent by the terminal on each of the preset first simulated beam sets, the base station further includes:

Receiving, by the base station, reference signals transmitted by the terminal on different analog beams in the preset first analog beam set at different times; or

Receiving, by the base station, the reference signals sent by the terminal on different analog beams in the preset first analog beam set on different subcarriers; or

The base station receives, at different times and on different subcarriers, a reference signal sent by the terminal on different analog beams in the preset first analog beam set.

Optionally, the method further includes:

The base station determines, according to the channel change status, that the analog beam in the first set of analog beams needs to be filtered; and from the first set of analog beams, the first analog beam is used as a center to filter out The first analog beam is separated from the set angle step of the analog beam to form a second analog beam set;

The base station configures the second set of analog beams to each terminal in the network.

Optionally, the method further includes:

For each terminal in the network, the base station separately measures a reference signal sent by the terminal on each of the second analog beam sets;

The base station selects an analog beam from the second set of analog beams as the second analog beam used by the terminal according to the measurement result.

Optionally, before the determining, by the base station, the reference signal sent by the terminal on each of the second analog beam sets, the base station further includes:

Receiving, by the base station, a reference signal sent by the terminal on different analog beams in the preset second analog beam set at different times; or

The base station receives, on different subcarriers, a reference signal sent by the terminal on different analog beams in a preset second analog beam set; or

The base station receives, at different times and on different subcarriers, a reference signal sent by the terminal on different analog beams in the preset second analog beam set.

In the embodiment of the present invention, for each terminal in the network, the base station separately measures the reference signal sent by each terminal on each analog beam in the preset first analog beam set, so that the service transmission may be known. The channel quality experienced, so that the accuracy of the channel quality measurement can be ensured; in addition, during the measurement, the base station can know the shaping effect of each analog beam in the first analog beam set, so that the first analog beam set can be obtained The selection of a more accurate analog beam improves the accuracy of the analog shape.

In a third aspect, a terminal includes:

a measuring module, configured to separately measure a reference signal on each of the preset first simulated beam sets;

a selection module, configured to select, according to the measurement result of the measurement module, an analog beam from the first set of analog beams as the first analog beam used by the terminal;

The reporting module is configured to send the number information of the first analog beam to the base station.

Optionally, the terminal further includes:

a receiving module, configured to receive the reference signal by using different analog beams in the first set of analog beams at different times; or by using different analog beams in the first set of analog beams on different subcarriers The reference signal is received; or the reference signal is received by different analog beams in the first set of analog beams at different times and on different subcarriers.

Optionally, the receiving module is further configured to:

Receiving a second set of analog beams configured by the base station, wherein the analog beams in the second set of analog beams are selected from the first set of analog beams and centered on the first analog beam A set of analog beamforming of the angular steps of the first analog beam separated by a set angle.

Optionally, the measuring module is further configured to: separately measure a reference signal on each of the second analog beam sets;

The selecting module is further configured to: select, according to the measurement result of the measurement module, an analog beam from the second set of analog beams as a second analog beam used by the terminal;

The reporting module is further configured to: send the number information of the second analog beam to the base station.

The receiving module is further configured to:

Receiving, by the different analog beams in the second set of analog beams, the reference signals at different times; or receiving the reference signals through different analog beams in the second set of analog beams on different subcarriers; or The reference signals are received by different analog beams in the second set of analog beams at different times and on different subcarriers.

In a fourth aspect, a base station includes:

a measuring module, configured to measure, for each terminal in the network, a reference signal sent by each terminal on each of the preset first analog beam sets;

And a processing module, configured to select, according to the measurement result corresponding to each analog beam, an analog beam from the first set of analog beams as the first analog beam used by the terminal.

Optionally, the base station further includes:

a receiving module, configured to receive, at different times, a reference signal sent by the terminal on different analog beams in a preset first analog beam set; or, on different subcarriers, receive the terminal in a preset first Simulating reference signals transmitted on different analog beams in a set of beams; or receiving the terminals at different times and on different subcarriers A reference signal transmitted on a different analog beam in a preset first set of analog beams.

Optionally, the processing module is further configured to:

Determining, according to the channel change status, that the analog beam in the first set of analog beams needs to be filtered; and selecting, from the first set of analog beams, centering on the first analog beam, The analog beams are spaced apart from the set angular step of the analog beam to form a second set of analog beams; the second set of analog beams is configured for each terminal in the network.

Optionally, the measuring module is further configured to: for each terminal in the network, separately measure a reference signal sent by the terminal on each of the second analog beam sets;

The processing module is further configured to select, according to the measurement result of the measurement module, an analog beam from the second set of analog beams as the second analog beam used by the terminal.

The receiving module is further configured to:

Receiving, at different times, a reference signal sent by the terminal on different analog beams in a preset second analog beam set; or receiving the terminal in a preset second analog beam set on different subcarriers The reference signals transmitted on the different analog beams are received; or the reference signals transmitted by the terminal on different analog beams in the preset second analog beam set are received at different times and on different subcarriers.

In the embodiment of the present invention, since the terminal separately measures the reference signal on each analog beam in the first analog beam set, that is, the channel measurement is performed, and the channel quality that may be experienced during the service transmission is known in advance, thereby ensuring The accuracy of the channel quality measurement; in addition, during the measurement process, the terminal can know the shaping effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set. Improves the accuracy of analog shaping.

In the embodiment of the present invention, for each terminal in the network, the base station separately measures the reference signal sent by each terminal on each analog beam in the preset first analog beam set, so that the service transmission may be known. The channel quality experienced, so that the accuracy of the channel quality measurement can be ensured; in addition, during the measurement, the base station can know the shaping effect of each analog beam in the first analog beam set, so that the first analog beam set can be obtained The selection of a more accurate analog beam improves the accuracy of the analog shape.

In a fifth aspect, the terminal may perform the steps described in Embodiment 1 of the present invention to ensure accuracy of channel quality measurement and improve accuracy of analog shaping, and the terminal includes: a receiver and a transmitter. , processor and memory, where:

The processor is configured to read a program in the memory, and perform the following processes: respectively: measuring a reference signal on each of the preset first simulated beam sets; and according to the measurement result, In the first set of analog beams, an analog beam is selected as the first analog beam used by the terminal; the number information of the first analog beam is sent to the base station by the transmitter;

The receiver, configured to receive data under control of the processor;

The transmitter is configured to receive and transmit data under the control of the processor.

Optionally, the receiver is configured to: receive the reference signal by using different analog beams in the first set of analog beams at different times; or pass the first set of analog beams on different subcarriers Different reference beams receive the reference signal; or receive the reference signal through different analog beams in the first set of analog beams at different times and on different subcarriers.

Optionally, the receiver is further configured to:

Receiving a second set of analog beams configured by the base station, wherein the analog beams in the second set of analog beams are selected from the first set of analog beams and centered on the first analog beam A set of analog beamforming of the angular steps of the first analog beam separated by a set angle.

Optionally, the processor is further configured to: read a program in the memory, and perform the following process: separately measuring a reference signal on each of the second simulated beam sets; according to the measuring module As a result of the measurement, from the second set of analog beams, one analog beam is selected as the second analog beam used by the terminal; and the number information of the second analog beam is sent to the base station by the transmitter.

Optionally, the receiver is further configured to:

Receiving, by the different analog beams in the second set of analog beams, the reference signals at different times; or receiving the reference signals through different analog beams in the second set of analog beams on different subcarriers; or The reference signals are received by different analog beams in the second set of analog beams at different times and on different subcarriers.

In the embodiment of the present invention, since the terminal separately measures the reference signal on each analog beam in the first analog beam set, that is, the channel measurement is performed, and the channel quality that may be experienced during the service transmission is known in advance, thereby ensuring The accuracy of the channel quality measurement; in addition, during the measurement process, the terminal can know the shaping effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set. Improves the accuracy of analog shaping.

In a sixth aspect, another base station, where the base station can perform the steps described in Embodiment 2 of the present invention, to achieve accuracy of ensuring channel quality measurement and improving accuracy of analog shaping, the base station includes: a receiver and a transmitter , processor and memory, where:

The processor is configured to read a program in the memory and perform the following process:

For each terminal in the network, respectively, measuring, by the terminal, a reference signal sent on each of the preset first analog beam sets; for measuring the corresponding measurement result of each analog beam, In the first set of analog beams, an analog beam is selected as the first analog beam used by the terminal;

The receiver, configured to receive data under control of the processor;

The transmitter is configured to receive and transmit data under the control of the processor.

Optionally, the receiver is configured to: at different times, receive the terminal in a preset first analog beam set. Reference signals transmitted on different analog beams; or on different subcarriers, receiving reference signals transmitted by the terminal on different analog beams in a preset first analog beam set; or at different times and on different subcarriers And receiving, by the terminal, a reference signal sent on different analog beams in the preset first analog beam set.

Based on any of the above embodiments, optionally, the processor is further configured to read a program in the memory, and perform the following process:

Determining, according to the channel change status, that the analog beam in the first set of analog beams needs to be filtered; and selecting, from the first set of analog beams, centering on the first analog beam, The analog beams are spaced apart from the set angular step of the analog beam to form a second set of analog beams; the transmitter is controlled to configure the second set of analog beams to each terminal in the network.

Optionally, the processor is further configured to: in the reading the program in the memory, perform the following process: for each terminal in the network, respectively simulate each of the terminals in the second simulated beam set The reference signal transmitted on the beam is measured; and according to the measurement result, an analog beam is selected from the second set of analog beams as the second analog beam used by the terminal.

Optionally, the receiver is further configured to:

Receiving, at different times, a reference signal sent by the terminal on different analog beams in a preset second analog beam set; or receiving the terminal in a preset second analog beam set on different subcarriers The reference signals transmitted on the different analog beams are received; or the reference signals transmitted by the terminal on different analog beams in the preset second analog beam set are received at different times and on different subcarriers.

In the embodiment of the present invention, for each terminal in the network, the base station separately measures the reference signal sent by each terminal on each analog beam in the preset first analog beam set, so that the service transmission may be known. The channel quality experienced, so that the accuracy of the channel quality measurement can be ensured; in addition, during the measurement, the base station can know the shaping effect of each analog beam in the first analog beam set, so that the first analog beam set can be obtained The selection of a more accurate analog beam improves the accuracy of the analog shape.

DRAWINGS

1 is a schematic diagram of digital-to-analog hybrid beamforming;

2 is a schematic flowchart of a method for determining an analog beam according to Embodiment 1 of the present invention;

3 is a schematic flowchart of another method for determining an analog beam according to Embodiment 2 of the present invention;

4 is a schematic diagram of a terminal in Embodiment 3 of the present invention;

FIG. 5 is a schematic diagram of a base station according to Embodiment 4 of the present invention; FIG.

6 is a schematic diagram of another terminal in Embodiment 5 of the present invention;

FIG. 7 is a schematic diagram of another base station according to Embodiment 6 of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The technology provided by the embodiments of the present invention can be used in various communication systems, such as current 2G, 3G communication systems and next generation communication systems, such as Global System for Mobile Communications (GSM), code division multiple access (CDMA, Code). Division Multiple Access) system, Time Division Multiple Access (TDMA) system, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA), Frequency Division Multiple Addressing (FDMA) system, positive OFDM (Orthogonal Frequency-Division Multiple Access) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, LTE system, and other such communication systems .

The user equipment in the embodiment of the present invention may be a wireless terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to the wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal The computers, for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.

A base station in an embodiment of the present invention may refer to a device in an access network that communicates with a wireless terminal over one or more sectors on an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B) is not limited in the embodiment of the present invention.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the first embodiment of the present invention, a method for determining an analog beam is provided. The base station may perform analog domain beamforming for the terminal based on the first analog beam or the second analog beam reported by the terminal by means of downlink measurement and reporting. The specific scheme is shown in Figure 2, including:

S21. The terminal separately measures a reference signal on each of the preset first analog beam sets.

In this step, the reference signal measured by the terminal is: the base station adopts the set beam scanning mode, and respectively sends a reference signal through each analog beam in the first analog beam set, so that each terminal in the network is based on different simulations. The reference signal on the beam is measured. For example, the base station transmits a reference signal through each of the first analog beam sets in a broadcast manner.

The analog beams in the first set of analog beams respectively point to different directions.

S22. The terminal selects, according to the measurement result, an analog beam from the first set of analog beams as the first analog beam used by the terminal.

For example, the terminal may select, as the first analog beam, an analog beam capable of maximizing a shaped Signal Noise Ratio (SNR) according to a signal to noise ratio maximization principle.

S23. The terminal sends the number information of the first analog beam to the base station, so that the base station can perform analog domain beamforming for the terminal according to the first analog beam.

In the embodiment of the present invention, the terminal separately measures the reference signal on each of the preset first simulated beam sets, and then selects an analog beam from the first simulated beam set according to the measurement result. And serving as the first analog beam used by the terminal; and finally sending the number information of the first analog beam to the base station. According to the solution provided by the embodiment of the present invention, since the terminal separately measures the reference signal on each analog beam in the first analog beam set, that is, the channel measurement is performed, and the channel quality that may be experienced when the service is transmitted is known in advance. Therefore, the accuracy of the channel quality measurement can be ensured. In addition, during the measurement process, the terminal can know the shaping effect of each analog beam in the first analog beam set, so that the first analog beam set can be selected to be more accurate. The analog beam improves the accuracy of the analog shape.

In the implementation, before S21, the terminal receives the reference signals on different analog beams in any of the following three alternative manners:

Mode 1, the terminal receives the reference signal by using different analog beams in the first set of analog beams at different times.

In this manner, when the base station side transmits the reference signal, the reference signal is transmitted through different analog beams in the first analog beam set at different times.

For example, when the base station side transmits the reference signal, it may be sent in units of subframes, that is, the base station transmits the reference signal through different analog beams in the first analog beam set in different subframes; Transmitted for the unit, that is, the base station transmits the reference signal through different analog beams in the first set of analog beams on different time slots.

The correspondence between the time of the base station and the terminal and the number of the analog beam is understood to be consistent. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

Manner 2: The terminal receives the reference signal by using different analog beams in the first analog beam set on different subcarriers.

In this manner, when the base station side transmits the reference signal, the reference signal is sent by using different analog beams in the first analog beam set on different subcarriers.

The correspondence between the number of the subcarrier and the analog beam is consistent between the base station and the terminal. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

Manner 3: The terminal receives the reference signal by using different analog beams in the first analog beam set at different times and on different subcarriers.

In this manner, when the base station side transmits the reference signal, the reference signal is sent by using different analog beams in the first analog beam set at different times and on different subcarriers.

The correspondence between the base station and the terminal for the subcarrier, the time and the number of the analog beam is understood to be consistent. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

In this embodiment, based on any of the foregoing embodiments, after S23, the method further includes:

The terminal receives the second analog beam set configured by the base station, where the analog beam in the second analog beam set is centered on the first analog beam from the first analog beam set, and the distance from the first analog beam is set. The angled step of the analog beam to form a second set of analog beams.

Specifically, the base station further determines whether it is necessary to further improve the shaping accuracy according to the channel change condition. If the channel changes slowly, the base station uses the first analog beam as the center and adopts the first analog beam reported by the terminal. The predetermined step size is used to select a part of the analog beam from the first analog beam set, and the selected analog beam is used as a second analog beam set, and the first analog beam set corresponds to a set of wider analog domain beams, and the screening is performed. The resulting second set of analog beams corresponds to a narrow set of analog domain beams.

For example, centering on the horizontal and pitch angles corresponding to the first analog beam, selecting a set of analog beams closest to the first analog beam and having the closest horizontal and vertical angles to form a second simulation Beam set.

In the implementation, if the base station determines that the forming accuracy is not required to be improved, the base station performs analog domain beamforming on the terminal according to the first analog beam reported by the terminal; if the base station determines that the forming accuracy needs to be improved, the second determining is performed. And simulating the beam set, and performing analog domain beamforming on the terminal according to the second analog beam reported by the terminal or the second analog beam determined by the base station by the measurement. The scheme for determining the second analog beam by the base station is described in the second embodiment of the present invention, and details are not described herein again.

Further, after the terminal receives the second analog beam set configured by the base station, the method further includes:

The terminal measures the reference signal on each of the second analog beam sets;

The terminal selects an analog beam from the second set of analog beams as the second analog beam used by the terminal according to the measurement result;

The terminal sends the number information of the second analog beam to the base station, so that the base station can perform analog domain beamforming for the terminal according to the second analog beam.

Optionally, the terminal separately measures the reference signal on each of the second analog beam sets. Before, the terminal receives the reference signals on different analog beams in any of the following three alternative ways:

1. The terminal receives the reference signal through different analog beams in the second analog beam set at different times.

Correspondingly, when the base station side transmits the reference signal, the reference signal is sent by using different analog beams in the second analog beam set at different times.

The correspondence between the time of the base station and the terminal and the number of the analog beam is understood to be consistent. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

2. The terminal receives the reference signal through different analog beams in the second analog beam set on different subcarriers.

In this manner, when the base station side transmits the reference signal, the reference signal is sent by using different analog beams in the second analog beam set on different subcarriers.

The correspondence between the number of the subcarrier and the analog beam is consistent between the base station and the terminal. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

3. The terminal receives the reference signal through different analog beams in the second analog beam set at different times and on different subcarriers.

In this manner, when the base station side transmits the reference signal, the reference signal is sent by using different analog beams in the second analog beam set at different times and on different subcarriers.

The correspondence between the base station and the terminal for the subcarrier, the time and the number of the analog beam is understood to be consistent. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

In the second embodiment of the present invention, a method for determining an analog beam is provided. In an uplink measurement manner, a base station determines a first analog beam or a second analog beam used by each terminal in the network, and is determined based on the determined An analog beam or a second analog beam performs analog domain beamforming for each terminal. The specific scheme is shown in FIG. 3, including:

S31. For each terminal in the network, the base station separately measures a reference signal sent by the terminal on each analog beam in the preset first analog beam set.

S32. The base station selects, according to the measurement result corresponding to each analog beam, an analog beam from the first set of analog beams as the first analog beam used by the terminal.

In the embodiment of the present invention, for each terminal in the network, the base station first separately measures the reference signal sent by the terminal on each analog beam in the preset first analog beam set; and then according to each analog beam. The measurement result is that, from the first set of analog beams, an analog beam is selected as the first analog beam used by the terminal, so that the base station can perform analog domain beamforming for the terminal according to the first analog beam. According to the solution provided by the embodiment of the present invention, for each terminal in the network, the base station separately measures the reference signal sent by the terminal on each analog beam in the preset first analog beam set, and the service can be learned. The channel quality that may be experienced during transmission, so that the accuracy of the channel quality measurement can be ensured; in addition, the base station can learn the first analog beam during the measurement process. The shaping effect of each analog beam in the set can select a more accurate analog beam from the first set of analog beams, which improves the accuracy of the analog shaping.

In the implementation, before S31, the base station receives the reference signal sent by the terminal on each analog beam in the preset first analog beam set by using any one of the following three alternative receiving modes:

Manner 1: The base station receives, at different times, a reference signal sent by the terminal on different analog beams in the preset first analog beam set.

In this manner, when the terminal sends the reference signal, the reference signal is sent by different analog beams in the first analog beam set at different times.

The correspondence between the time of the base station and the terminal and the number of the analog beam is understood to be consistent. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

Manner 2: The base station receives, on different subcarriers, a reference signal sent by the terminal on different analog beams in the preset first analog beam set.

In this manner, when the terminal sends the reference signal, the reference signal is sent by using different analog beams in the first analog beam set on different subcarriers.

The correspondence between the number of the subcarrier and the analog beam is consistent between the base station and the terminal. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

Manner 3: The base station receives, at different times and on different subcarriers, a reference signal sent by the terminal on different analog beams in the preset first analog beam set.

In this manner, when the terminal sends the reference signal, the reference signal is sent by using different analog beams in the first analog beam set at different times and on different subcarriers.

The correspondence between the base station and the terminal for the subcarrier, the time and the number of the analog beam is understood to be consistent. The corresponding relationship may be determined by the base station and notified to each terminal, or may be determined by the base station and the terminal, and may also be specified in the protocol.

And the method further includes: after the base station selects an analog beam as the first analog beam used by the terminal from the first analog beam set according to the measurement result corresponding to each analog beam, the method further includes:

The base station determines, according to the channel change status, that the analog beam in the first analog beam set needs to be filtered;

The base station selects, from the first analog beam set, an analog beam with an angular step set at a distance from the first analog beam, to form a second analog beam set;

The base station configures a second set of analog beams to each terminal in the network.

Specifically, after determining the first analog beam, the base station determines whether it is necessary to further improve the shaping accuracy according to the channel change status, that is, whether the analog beam in the first analog beam set needs to be filtered. For the specific process, refer to the implementation of the present invention. The related description in the first example will not be repeated here. After the second analog beam set is formed, the second analog beam set is configured to each terminal in the network, and is notified to each terminal by using a broadcast manner.

In an implementation, after the base station configures the second analog beam set to each terminal in the network, the method further includes:

For each terminal in the network, the base station separately measures the reference signal sent by the terminal on each analog beam in the second analog beam set;

The base station selects an analog beam as the second analog beam used by the terminal from the second analog beam set according to the measurement result, so that the base station can perform analog domain beamforming for the terminal according to the second analog beam.

Optionally, before the base station measures the reference signal sent by the terminal on each of the second analog beam sets, the base station further includes:

The base station receives, at different times, a reference signal sent by the terminal on different analog beams in the preset second analog beam set; or

The base station receives, on different subcarriers, a reference signal sent by the terminal on different analog beams in the preset second analog beam set; or

The base station receives the reference signals sent by the terminal on different analog beams in the preset second analog beam set at different times and on different subcarriers.

The above method processing flow can be implemented by a software program, which can be stored in a storage medium, and when the stored software program is called, the above method steps are performed.

Based on the same inventive concept, in the third embodiment of the present invention, a terminal is provided, which can perform the steps described in Embodiment 1 of the present invention to ensure the accuracy of channel quality measurement and improve the accuracy of analog shaping, such as As shown in FIG. 4, the terminal includes:

The measuring module 41 is configured to separately measure reference signals on each of the preset first simulated beam sets;

The selecting module 42 is configured to select, according to the measurement result of the measurement module 41, an analog beam from the first set of analog beams as the first analog beam used by the terminal;

The reporting module 43 is configured to send the number information of the first analog beam to the base station.

Optionally, the terminal further includes:

The receiving module 44 is configured to receive, by using different analog beams in the first set of analog beams, the reference signals at different times, or by using different analog beams in the first set of analog beams on different subcarriers. The reference signal; or receiving the reference signal through different analog beams in the first set of analog beams at different times and on different subcarriers.

Optionally, the receiving module 44 is further configured to:

Receiving a second set of analog beams configured by the base station, wherein the analog beams in the second set of analog beams are selected from the first set of analog beams and centered on the first analog beam A set of analog beamforming of the angular steps of the first analog beam separated by a set angle.

Optionally, the measuring module 41 is further configured to: separately measure a reference signal on each of the second analog beam sets;

The selecting module 42 is further configured to: select, according to the measurement result of the measurement module, an analog beam from the second set of analog beams as a second analog beam used by the terminal;

The reporting module 43 is further configured to: send the number information of the second analog beam to the base station.

Optionally, the receiving module 44 is further configured to:

Receiving, by the different analog beams in the second set of analog beams, the reference signals at different times; or receiving the reference signals through different analog beams in the second set of analog beams on different subcarriers; or The reference signals are received by different analog beams in the second set of analog beams at different times and on different subcarriers.

Based on the same inventive concept, in a fourth embodiment of the present invention, a base station is provided, which can perform the steps described in Embodiment 2 of the present invention to ensure accuracy of channel quality measurement and improve accuracy of analog shaping, such as As shown in FIG. 5, the base station includes:

The measuring module 51 is configured to measure, for each terminal in the network, a reference signal sent by each terminal on each of the preset first analog beam sets;

The processing module 52 is configured to select, according to the measurement result corresponding to each analog beam, an analog beam from the first set of analog beams as the first analog beam used by the terminal.

Optionally, the base station further includes:

The receiving module 53 is configured to receive, at different times, a reference signal sent by the terminal on different analog beams in the preset first analog beam set, or receive the terminal in a preset on different subcarriers. a reference signal transmitted on different analog beams in a set of analog beams; or receiving reference signals transmitted by the terminal on different analog beams in a preset first set of analog beams at different times and on different subcarriers.

Based on any of the foregoing embodiments, the processing module 52 is further configured to:

Determining, according to the channel change status, that the analog beam in the first set of analog beams needs to be filtered; and selecting, from the first set of analog beams, centering on the first analog beam, The analog beams are spaced apart from the set angular step of the analog beam to form a second set of analog beams; the second set of analog beams is configured for each terminal in the network.

Optionally, the measuring module 51 is further configured to: for each terminal in the network, separately measure a reference signal sent by the terminal on each of the second analog beam sets;

The processing module 52 is further configured to: according to the measurement result of the measurement module 51, select one analog beam from the second analog beam set as the second analog beam used by the terminal, and pass the second The analog beam transmits data to the terminal.

Optionally, the receiving module 53 is further configured to:

Receiving, at different times, a reference signal sent by the terminal on different analog beams in a preset second analog beam set; or receiving the terminal in a preset second analog beam set on different subcarriers The reference signals transmitted on the different analog beams are received; or the reference signals transmitted by the terminal on different analog beams in the preset second analog beam set are received at different times and on different subcarriers.

Based on the same inventive concept, in the fifth embodiment of the present invention, another terminal is provided, and the terminal can perform the steps described in the first embodiment of the present invention to ensure the accuracy of the channel quality measurement and improve the accuracy of the analog shaping. As shown in FIG. 6, the terminal includes a receiver 61, a transmitter 62, a processor 63, and a memory 64, wherein:

The processor 63 is configured to read a program in the memory 64, and perform the following processes: respectively, measuring a reference signal on each of the preset first analog beam sets; and according to the measurement result, from the first In the analog beam set, an analog beam is selected as the first analog beam used by the terminal; the number information of the first analog beam is transmitted by the transmitter 62 to the base station.

The receiver 61 is configured to receive data under the control of the processor 63.

Transmitter 62 is operative to transmit data under the control of processor 63.

Here, in FIG. 6, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 63 and various circuits of memory represented by memory 64. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Receiver 61 and transmitter 62 provide means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 65 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 63 is responsible for managing the bus and normal processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 64 can be used to store data used by the processor 63 when performing operations.

Optionally, the processor 63 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex Complex Programmable Logic Device (CPLD).

Optionally, the receiver 61 is configured to receive the reference signal by using different analog beams in the first set of analog beams at different times; or by using the first analog beam set on different subcarriers. The different analog beams in the receive the reference signal; or receive the reference signal through different analog beams in the first set of analog beams at different times and on different subcarriers.

Optionally, the receiver 61 is further configured to:

Receiving a second set of analog beams configured by the base station, wherein the analog beams in the second set of analog beams are selected from the first set of analog beams and centered on the first analog beam First analog beam A set of simulated beamforming that is set apart by an angular step.

Optionally, the processor 63 is further configured to read a program in the memory 64, and perform the following processes: separately measuring a reference signal on each of the second simulated beam sets; according to the measuring a measurement result of the module, from the second set of analog beams, selecting an analog beam as a second analog beam used by the terminal; transmitting, by the transmitter 62, number information of the second analog beam to the Base station.

Optionally, the receiver 61 is further configured to:

Receiving, by the different analog beams in the second set of analog beams, the reference signals at different times; or receiving the reference signals through different analog beams in the second set of analog beams on different subcarriers; or The reference signals are received by different analog beams in the second set of analog beams at different times and on different subcarriers.

Based on the same inventive concept, in the sixth embodiment of the present invention, another base station is provided, which can perform the steps described in Embodiment 2 of the present invention to achieve accuracy of channel quality measurement and improve accuracy of analog shaping. As shown in FIG. 7, the base station includes a receiver 71, a transmitter 72, a processor 73, and a memory 74, wherein:

The processor 73 is configured to read the program in the memory 74 and perform the following process:

For each terminal in the network, respectively, measuring, by the terminal, a reference signal sent on each of the preset first analog beam sets; for measuring the corresponding measurement result of each analog beam, In the first set of analog beams, an analog beam is selected as the first analog beam used by the terminal.

The receiver 71 is configured to receive data under the control of the processor 73.

Transmitter 72 is operative to transmit data under the control of processor 73.

Here, in FIG. 7, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 73 and various circuits of memory represented by memory 74. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Receiver 71 and transmitter 72 provide means for communicating with various other devices on a transmission medium.

The processor 73 is responsible for managing the bus and normal processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 74 can be used to store data used by the processor 73 when performing operations.

Alternatively, the processor 73 can be a CPU, an ASIC, an FPGA, or a CPLD.

Optionally, the receiver 71 is configured to receive reference signals sent by the terminal on different analog beams in a preset first analog beam set at different times; or receive the same on different subcarriers. a reference signal sent by the terminal on different analog beams in the preset first analog beam set; or at different times and on different subcarriers, receiving the terminal on different analog beams in the preset first analog beam set The reference signal sent.

Based on any of the above embodiments, optionally, the processor 73 is further configured to read a program in the memory 74 and execute the following process:

Determining, according to the channel change status, that the analog beam in the first set of analog beams needs to be filtered; and selecting, from the first set of analog beams, centering on the first analog beam, The analog beams are spaced apart from the set angular step of the analog beam to form a second set of analog beams; the transmitter 72 is controlled to configure the second set of analog beams to each terminal in the network.

Optionally, the processor 73 is further configured to read a program in the memory 74, and perform the following process: for each terminal in the network, respectively, the terminal is on each of the second analog beam sets. The transmitted reference signal is measured; and according to the measurement result, an analog beam is selected from the second set of analog beams as the second analog beam used by the terminal.

Optionally, the receiver 71 is further configured to:

Receiving, at different times, a reference signal sent by the terminal on different analog beams in a preset second analog beam set; or receiving the terminal in a preset second analog beam set on different subcarriers The reference signals transmitted on the different analog beams are received; or the reference signals transmitted by the terminal on different analog beams in the preset second analog beam set are received at different times and on different subcarriers.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions are provided for implementing one or more processes and/or block diagrams in the flowchart The steps of the function specified in the box or in multiple boxes.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims (22)

A method of determining an analog beam, the method comprising: The terminal respectively measures the reference signal on each of the preset first simulated beam sets; The terminal selects, according to the measurement result, an analog beam from the first set of analog beams as the first analog beam used by the terminal; The terminal sends the number information of the first analog beam to the base station. The method according to claim 1, wherein before the measuring, by the terminal, the reference signal on each of the preset first simulated beam sets, the terminal further comprises: Receiving, by the terminal, the reference signal through different analog beams in the first set of analog beams at different times; or Receiving, by the terminal, the reference signal by using different analog beams in the first set of analog beams on different subcarriers; or The terminal receives the reference signal through different analog beams in the first set of analog beams at different times and on different subcarriers. The method according to claim 1 or 2, wherein after the terminal transmits the number information of the first analog beam to the base station, the method further includes: Receiving, by the terminal, a second set of analog beams configured by the base station, where an analog beam in the second set of analog beams is selected from the first set of analog beams and centered on the first analog beam A set of analog beamforming that is set at an angular step distance from the first analog beam. The method according to claim 3, wherein after the terminal receives the second analog beam set configured by the base station, the method further includes: The terminal respectively measures a reference signal on each of the second analog beam sets; The terminal selects, according to the measurement result, an analog beam from the second set of analog beams as the second analog beam used by the terminal; The terminal sends the number information of the second analog beam to the base station. The method of claim 4, wherein before the measuring, by the terminal, the reference signal on each of the second analog beam sets, the method further comprises: Receiving, by the terminal, the reference signal through different analog beams in the second set of analog beams at different times; or Receiving, by the terminal, the reference signal by using different analog beams in the second set of analog beams on different subcarriers; or Passing, by the terminal, different analog beams in the second simulated beam set at different times and on different subcarriers Receiving the reference signal. A method of determining an analog beam, the method comprising: For each terminal in the network, the base station separately measures the reference signal sent by the terminal on each of the preset first analog beam sets; The base station selects an analog beam from the first set of analog beams as the first analog beam used by the terminal according to the measurement result corresponding to each analog beam. The method according to claim 6, wherein the base station separately measures, before the measurement, the reference signal sent by the terminal on each of the preset first simulated beam sets, the base station further includes: Receiving, by the base station, reference signals transmitted by the terminal on different analog beams in the preset first analog beam set at different times; or Receiving, by the base station, the reference signals sent by the terminal on different analog beams in the preset first analog beam set on different subcarriers; or The base station receives, at different times and on different subcarriers, a reference signal sent by the terminal on different analog beams in the preset first analog beam set. The method of claim 6 or 7, wherein the method further comprises: The base station determines, according to the channel change status, that the analog beam in the first set of analog beams needs to be filtered; and from the first set of analog beams, the first analog beam is used as a center to filter out The first analog beam is separated from the set angle step of the analog beam to form a second analog beam set; The base station configures the second set of analog beams to each terminal in the network. The method of claim 8 further comprising: For each terminal in the network, the base station separately measures a reference signal sent by the terminal on each of the second analog beam sets; The base station selects an analog beam from the second set of analog beams as the second analog beam used by the terminal according to the measurement result. The method according to claim 8, wherein the base station separately measures, before the measurement, the reference signal sent by the terminal on each of the second analog beam sets, the method further includes: Receiving, by the base station, a reference signal sent by the terminal on different analog beams in the preset second analog beam set at different times; or The base station receives, on different subcarriers, a reference signal sent by the terminal on different analog beams in a preset second analog beam set; or The base station receives, at different times and on different subcarriers, a reference signal sent by the terminal on different analog beams in the preset second analog beam set. A terminal, wherein the terminal comprises: a measuring module, configured to separately measure a reference signal on each of the preset first simulated beam sets; a selection module, configured to select, according to the measurement result of the measurement module, an analog beam from the first set of analog beams as the first analog beam used by the terminal; The reporting module is configured to send the number information of the first analog beam to the base station. The terminal according to claim 11, wherein the terminal further comprises: a receiving module, configured to receive the reference signal by using different analog beams in the first set of analog beams at different times; or by using different analog beams in the first set of analog beams on different subcarriers The reference signal is received; or the reference signal is received by different analog beams in the first set of analog beams at different times and on different subcarriers. The terminal according to claim 12, wherein the receiving module is further configured to: Receiving a second set of analog beams configured by the base station, wherein the analog beams in the second set of analog beams are selected from the first set of analog beams and centered on the first analog beam A set of analog beamforming of the angular steps of the first analog beam separated by a set angle. The terminal according to claim 13, wherein the measuring module is further configured to: respectively measure a reference signal on each of the second analog beam sets; The selecting module is further configured to: select, according to the measurement result of the measurement module, an analog beam from the second set of analog beams as a second analog beam used by the terminal; The reporting module is further configured to: send the number information of the second analog beam to the base station. The terminal according to claim 14, wherein the receiving module is further configured to: Receiving, by the different analog beams in the second set of analog beams, the reference signals at different times; or receiving the reference signals through different analog beams in the second set of analog beams on different subcarriers; or The reference signals are received by different analog beams in the second set of analog beams at different times and on different subcarriers. A base station, the base station includes: a measuring module, configured to measure, for each terminal in the network, a reference signal sent by each terminal on each of the preset first analog beam sets; And a processing module, configured to select, according to the measurement result corresponding to each analog beam, an analog beam from the first set of analog beams as the first analog beam used by the terminal. The base station according to claim 16, wherein the base station further comprises: a receiving module, configured to receive, at different times, a reference signal sent by the terminal on different analog beams in a preset first analog beam set; or, on different subcarriers, receive the terminal in a preset first Simulating reference signals transmitted on different analog beams in a set of beams; or receiving the terminals at different times and on different subcarriers A reference signal transmitted on a different analog beam in a preset first set of analog beams. The base station according to claim 16 or 17, wherein the processing module is further configured to: Determining, according to the channel change status, that the analog beam in the first set of analog beams needs to be filtered; and selecting, from the first set of analog beams, centering on the first analog beam, The analog beams are spaced apart from the set angular step of the analog beam to form a second set of analog beams; the second set of analog beams is configured for each terminal in the network. The base station according to claim 18, wherein the measuring module is further configured to: send, for each terminal in the network, the terminal to each of the second analog beam sets Reference signal for measurement; The processing module is further configured to select, according to the measurement result of the measurement module, an analog beam from the second set of analog beams as the second analog beam used by the terminal. The base station according to claim 18, wherein the receiving module is further configured to: Receiving, at different times, a reference signal sent by the terminal on different analog beams in a preset second analog beam set; or receiving the terminal in a preset second analog beam set on different subcarriers The reference signals transmitted on the different analog beams are received; or the reference signals transmitted by the terminal on different analog beams in the preset second analog beam set are received at different times and on different subcarriers. A terminal characterized by comprising a receiver, a transmitter, a processor and a memory, wherein: The processor is configured to read a program in the memory, and perform the following processes: respectively: measuring a reference signal on each of the preset first simulated beam sets; and according to the measurement result, In the first set of analog beams, an analog beam is selected as the first analog beam used by the terminal; the number information of the first analog beam is sent to the base station by the transmitter; The receiver, configured to receive data under control of the processor; The transmitter is configured to receive and transmit data under the control of the processor. A base station comprising a receiver, a transmitter, a processor and a memory, wherein: The processor is configured to read a program in the memory and perform the following process: For each terminal in the network, respectively, measuring, by the terminal, a reference signal sent on each of the preset first analog beam sets; for measuring the corresponding measurement result of each analog beam, In the first set of analog beams, an analog beam is selected as the first analog beam used by the terminal; The receiver, configured to receive data under control of the processor; The transmitter is configured to receive and transmit data under the control of the processor.

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