WO2021168863A1

WO2021168863A1 - Filter coefficient determining method and apparatus

Info

Publication number: WO2021168863A1
Application number: PCT/CN2020/077356
Authority: WO
Inventors: 李帅; 鲁振伟; 吴毅凌; 蒋亚军
Original assignee: 华为技术有限公司
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2021-09-02
Also published as: CN115088207B; CN115088207A

Abstract

The present application relates to the field of wireless communications. Disclosed are a filter coefficient determining method and apparatus, for solving the problem of how to configure a sending coefficient of a sending analog filter and a receiving coefficient of a receiving filter between two devices. A first device sends first measurement signals in different time units by using the same coefficient of a sending analog filter. A second devices respectively receives the first measurement signals by using a plurality of different coefficients of a receiving analog filter. The second device selects one coefficient from the plurality of different coefficients as a receiving coefficient of the second device. The first device respectively send second measurement signals in different time units by using different coefficients of the sending analog filter. The second device receives the second measurement signals by using the receiving coefficient. The first device receives a first indication from the second device, and determines, according to the first indication, a coefficient of the sending analog filter of the first device. The quality of communications is improved by using the method.

Description

Method and device for determining filter coefficients

Technical field

The embodiments of the present application relate to the field of wireless communication, and in particular, to a method and device for determining filter coefficients.

Background technique

In the 5G (fifth generation) mobile communication system, a higher carrier frequency than the long term evolution (LTE) mobile communication system is adopted to realize wireless communication with larger bandwidth and higher transmission rate.

Due to the high carrier frequency, the wireless signal transmitted by the transmitting device experiences more severe fading during the space propagation process, and it is even difficult for the receiving device to detect the wireless signal. The transmitting device uses multi-antenna technology to transmit wireless signals using narrow beams to cover longer distances through the antenna's beam gain, and because the signal coverage is narrow, there is less interference in directions other than the signal. For this reason, the analog filter of a transmitting device in a 5G communication system can use beamforming technology to obtain a beam with good directivity, so as to increase the power in the transmitting direction and improve the signal-to-interference-to-noise ratio of the receiving device. In multi-antenna systems, lower cost analog filters are widely used. The settings of the receiving analog filter of the receiving device and the transmitting analog filter of the transmitting device have a greater impact on the communication quality. How to set the receiving analog filter and the transmitting analog filter is a problem to be solved in the industry.

Summary of the invention

The embodiments of the present application provide a method and device for determining filter coefficients to solve the problem of how to set the receiving analog filter of the receiving device and the transmitting analog filter of the transmitting device.

In a first aspect, a method for determining filter coefficients is provided. A first period is configured in a first device, and the first period is a transmission period for the first device to send a measurement signal. In the first period, the first device may use a set of first coefficients of the sending analog filter to send the first measurement signal to the second device in at least two different first time units, that is, the first device sends at least For the two first measurement signals, the first time unit corresponding to each first measurement signal is different, and a set of first coefficients corresponding to each first measurement signal is the same. The first device may also use at least two different sets of second coefficients of the sending analog filter to send to the second device on at least two different second time units in the first period. The second measurement signal, that is, the first device sends at least two second measurement signals, the second time unit corresponding to each second measurement signal is different, and the set of second coefficients corresponding to each second measurement signal is different. The width of the beam corresponding to the set of first coefficients of the transmitting analog filter is greater than the width of the beam corresponding to any set of second coefficients. Each second measurement signal is associated with an identifier, and each second measurement signal is associated with a set of second coefficients in the transmitting analog filter for transmitting the second measurement signal. And at least two of the at least two different first time units are earlier than at least one of the at least two different second time units, and at least two of the at least two different second time units Two are later than at least one of the at least two different first time units. Then, the first device receives a first instruction from the second device, where the first instruction is used to indicate a target identifier, and the target identifier includes the at least two second measurement signals associated with the In the identifier, that is, the second measurement signal identified by the target identifier is included in the at least two second measurement signals sent by the second device. Further, the second device may determine the transmission coefficient of the transmission analog filter of the first device based on the target identifier. Specifically, the first device may determine the second measurement signal associated with the target identifier, and determine a set of second coefficients associated with the associated second measurement signal, and use the associated set of second coefficients as the The transmission coefficient of the transmission analog filter of the first device. The first device sends the first measurement signal through the wide beam and the second measurement signal through the narrow beam in one cycle, so that the second device determines the first device based on the first measurement signal and the second measurement signal sent by the first device The transmit coefficient of the transmit analog filter.

In a possible implementation, the first device may also use the transmit coefficient of the transmit analog filter as the receive coefficient of the receive analog filter of the first device.

When the proportion of the uplink service of the first device is small and the interference is small, the uplink receiving beam of the first device can be multiplexed with the downlink sending beam, so that the reception coefficient of the receiving analog filter of the first device can be determined simply and quickly.

In a possible implementation, the first device may also send a second indication to the second device, and the second indication may be used to indicate the at least two first measurements sent by the first device The position of the first time unit in the first period corresponding to the signal, and the position of the second time unit in the first period corresponding to the at least two second measurement signals sent respectively.

The first device and the second device may agree on the position of the time unit in the first period when the first device uses the wide beam and the narrow beam to send the measurement signal. Of course, the first device may also notify the second device that the first device uses the wide beam and the narrow beam to send the position of the time unit of the measurement signal in the first period. The first device instructs the second device to use the wide beam and the narrow beam to send the measurement signal time unit position in the first period in a manner, so that the first device can flexibly configure the time when the first device sends the measurement signal.

In a possible implementation, in the first period, any one of the first time units (that is, the transmission time of the first measurement signal) is earlier than any one of the second time units (the time of the second measurement signal). Sending time), that is, in the first period, the first device first uses the same wide beam to send the first measurement signal, and then uses a different narrow beam to send the second measurement signal. This way of sending measurement signals can facilitate the second device to quickly select the sending coefficient of the sending analog filter of the first device and the receiving coefficient of the receiving analog filter of the second device, which improves the determination of the matching between the two devices. The efficiency of the transmit coefficient of the transmit analog filter and the receive coefficient of the receive analog filter.

In a possible implementation, in the first period, there is a second time unit between two adjacent first time units, that is, when the first device sends a measurement signal, it may A second measurement signal can be inserted between the two first measurement signals.

When multiple second devices and the first device determine the reception coefficient and the transmission coefficient, the time for each second device to access the first device is not fixed. The first device transmits the measurement signal through the wide beam and the narrow beam. Compared with the first measurement signal using the wide beam and then the second measurement signal using the narrow beam, it avoids that a certain second device misses a certain first measurement signal. A part of the first measurement signal sent using a wide beam during one cycle needs to occupy the next first cycle to complete the problem of determining the coefficient. In this case, since the first time unit and the second time unit are intersected in the time domain, the second device can start the coefficient determination process in the nearest first time unit, and the second device is completing the first measurement After the signal is measured and the reception coefficient of the local side is determined, the second measurement signal of the opposite side can be measured in the nearest second time unit to determine the transmission coefficient of the opposite side. In this way, multiple second devices can quickly select the transmission coefficients of the transmitting analog filter of the first device and the receiving coefficients of the receiving analog filter of the second device, and the transmission coefficient and the receiving coefficient for determining the match between the two devices can be improved. The efficiency of the receiving coefficient.

In a possible implementation, the transmitting analog filter and the receiving analog filter in the first device may be different filters. In order to reduce the components of the first device, the transmitting analog filter and the receiving analog filter in the first device may be one filter.

In a possible implementation, the first device generates a coefficient corresponding to the phase shifter by setting the phase of each phase shifter in a group of phase shifters of the analog filter; the analog filter passes through the group of shifters. The signal generated by the superposition of a group of phases corresponding to the phaser has different signal gains in different directions, thereby forming a beam in space.

In a second aspect, a method for determining filter coefficients is provided, a first period is configured in a second device, and the first period is a receiving period during which the second device receives a measurement signal. In the first period, the second device uses at least two different sets of third coefficients of the receiving analog filter of the second device to receive the first measurement signal from the first device on at least two different first time units, That is, a set of reception coefficients corresponding to each first measurement signal received by the second device is different, and the first time unit corresponding to each first measurement signal is also different. Then, the second device may select a set of third coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the second device. Then, the second device uses the reception coefficient of the reception analog filter to respectively receive the second measurement signal from the first device on at least two different second time units. That is, the second device uses the same set of reception coefficients to receive multiple second measurement signals, and the reception time (second time unit) corresponding to each second measurement signal is different. Wherein, each second measurement signal is associated with an identifier. Further, the second device determines a target identifier, and sends a first instruction to the first device, where the first instruction is used to indicate the target identifier, and the target identifier is included in at least two of the second Among the identifiers respectively associated with the measurement signals, that is, the measurement signal identified by the target identifier is one of the at least two second measurement signals.

The second device uses different reception coefficients to receive the first measurement signal sent by the first device in different time units, and selects the reception coefficient of the reception analog filter of the second device from the different coefficients. Then, according to the at least two second measurement signals respectively received in different time units using the reception coefficient, the transmission coefficient of the transmission analog filter of the first device is selected for the first device. In this way, the second device determines the transmit coefficient of the transmit analog filter of the first device and the receive coefficient of the receive analog filter of the second device. Subsequent use of transmission coefficients to send data and use of reception coefficients to receive data can improve communication quality.

In a possible implementation, the second device may also receive a second indication from the first device, where the second indication is used to indicate the at least two first measurements sent by the first device The position of the first time unit corresponding to the signal in the first period, and the position of the second time unit corresponding to the at least two second measurement signals sent by the first device in the first period. Location. Furthermore, the second device may determine the positions of the first time unit and the second time unit in the first period according to the second instruction, so that the first measurement can be received on the first time unit Signal, the second measurement signal is received on the second time unit.

The first device and the second device may agree on the position in the first period of the time unit during which the first device uses the wide beam and the narrow beam to send the measurement signal. Of course, the first device may also notify the second device that the first device uses the wide beam and the narrow beam to send the position of the time unit of the measurement signal in the first cycle. The first device instructs the second device to use the wide beam and the narrow beam to send the measurement signal time unit position in the first cycle, so that the first device can flexibly configure the time when the first device sends the measurement signal.

In a possible implementation, when the second device receives the first measurement signal, it may be that the second device uses the at least two different sets of the first measurement signal of the receiving analog filter of the second device. Three coefficients, in the at least two different first time units, respectively receiving a set of first coefficients from the first device using the transmitting analog filter of the first device in the at least two different first time units The first measurement signal sent on respectively.

The second device uses different reception coefficients to receive the measurement signal sent by the first device with the same transmission coefficient. In this way, the local reception coefficient changes and the peer transmission coefficient remains unchanged in a many-to-one manner. The second device is in the second The reception coefficient of the second device used for communication is selected from the different reception coefficients of the device, which can better avoid communication interference.

In a possible implementation, when the second device selects the receiving coefficient of the receiving analog filter of the second device, it may be the signal quality corresponding to the at least two first measurement signals by the second device. And selecting a set of third coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the second device.

The second device selects the reception coefficient for communication according to the signal quality of the measured signal, which can better avoid communication interference.

In a possible implementation, the second device may also select a group of coefficients from the at least two different sets of third coefficients as the transmission coefficients of the transmission analog filter of the second device. The second device can not only determine the reception coefficient of the receive analog filter of the second device, but also determine the transmission coefficient of the transmit analog filter of the second device, so as to better avoid uplink communication interference.

In a possible implementation, when the second device selects the transmission coefficient of the transmission analog filter of the second device, it may be a group of first measurement signals that the second device associates with the first measurement signal with the strongest signal strength. The three coefficients are determined as the sending coefficients of the sending analog filter of the second device.

According to the signal strength of the measurement signal, the second device selects the third coefficient corresponding to the measurement signal with the strongest signal strength as the reception coefficient for communication, which can better avoid communication interference and improve communication quality.

In a possible implementation, when the second device receives the second measurement signal, the second device may use the receive coefficient of the receive analog filter of the second device, and the On at least two different second time units, at least two different sets of second coefficients received from the first device using the analog filter of the first device are respectively received on at least two different second time units. The second measurement signal sent.

The second device uses the same reception coefficient, and receives the measurement signal sent by the first device with different transmission coefficients. In this way, a one-to-many approach is adopted in which the reception coefficient of the local end remains unchanged and the transmission coefficient of the opposite end changes. The transmission coefficient of the first device used for communication is selected from the different reception coefficients of a device, which can better avoid communication interference.

In a possible implementation, when determining the target identifier, the second device may determine the target identifier of the measurement signal according to the received signal quality of the at least two second measurement signals.

The signal sent by the first device propagates through the spatial multipath to the second device side, and the signal with the strongest signal strength reaches the path corresponding to the signal with the smallest signal fading. Based on the reciprocity of the channel, the second device selects this path for transmission, and the signal sent by the second device reaches the first device and experiences the least fading. Based on this principle, when the first device sends multiple measurement signals through a wide beam, the second device uses different beams to receive the measurement signals respectively, and determines the downlink receive beam of the second device based on the signal optimization criterion, that is, the reception of the second device coefficient. The second device may also determine the uplink transmission beam of the second device based on the optimal signal strength criterion, that is, the transmission coefficient of the second device, so as to achieve the objective of anti-interference in downlink reception and minimum attenuation of the uplink transmission signal.

In a possible implementation, after the second device determines the receiving coefficient of the receiving analog filter of the second device, the second device may also use the receiving coefficient of the receiving analog filter to be at least A first time unit respectively receives the first measurement signal sent from the first device.

After determining the receiving coefficient of the receiving analog filter, the second device can use the receiving coefficient to receive the information/data from the first device. If the first device sends the first measurement signal after the second device determines the reception coefficient of the receiving analog filter, the second device may use the reception coefficient to receive the first measurement signal from the first device.

In a possible implementation, before determining the receiving coefficient of the second device, the second device may also use at least one of the at least two different sets of third coefficients of the receiving analog filter. The second time unit respectively receives the second measurement signal from the first device.

In a possible implementation, the transmitting analog filter and the receiving analog filter in the first device may be different filters. In order to reduce the hardware components of the first device, the transmitting analog filter and the receiving analog filter in the first device may be one filter.

In a third aspect, a communication device is provided, and the communication has the function of realizing the foregoing first aspect and any possible implementation of the first aspect. These functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more functional modules corresponding to the above-mentioned functions.

In a fourth aspect, a communication device is provided, and the communication has the function of realizing the foregoing second aspect and any possible implementation of the second aspect. These functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more functional modules corresponding to the above-mentioned functions.

In a fifth aspect, a communication device is provided. The device may be the first device in the foregoing method embodiment, or a chip set in the first device. The device includes a transceiver, a processor, and optionally, a memory. Wherein, the memory is used to store computer programs or instructions, and the processor is respectively coupled with the memory and the transceiver. When the processor executes the computer programs or instructions, the device executes the first aspect and the first aspect through the transceiver. A method executed by the first device in any possible implementation.

In a sixth aspect, a communication device is provided. The device may be the second device in the foregoing method embodiment, or a chip set in the second device. The device includes a transceiver, a processor, and optionally, a memory. Wherein, the memory is used to store computer programs or instructions, and the processor is respectively coupled with the memory and the transceiver. When the processor executes the computer programs or instructions, the device executes the second aspect and the second aspect through the transceiver. The method executed by the second device in any possible implementation.

In a seventh aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code runs on a computer, the computer executes the first aspect and any one of the possible aspects of the first aspect. Implementation of the method executed by the first device.

In an eighth aspect, there is provided a computer program product, the computer program product comprising: computer program code, when the computer program code is run on a computer, the computer executes any of the above-mentioned second aspect and any possible aspect of the second aspect Implementation of the method executed by the second device.

In a ninth aspect, the present application provides a chip system that includes a processor and a memory, and the processor and the memory are electrically coupled; the memory is used to store computer program instructions; the processor , Used to execute part or all of the computer program instructions in the memory. When the part or all of the computer program instructions are executed, they are used to implement the first aspect and any possible implementation method of the first aspect. The function of the device.

In a possible design, the chip system may further include a transceiver, and the transceiver is configured to send a signal processed by the processor or receive a signal input to the processor. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a tenth aspect, the present application provides a chip system that includes a processor and a memory, and the processor and the memory are electrically coupled; the memory is used to store computer program instructions; the processor , Used to execute part or all of the computer program instructions in the memory, when the part or all of the computer program instructions are executed, used to implement the second aspect and the second aspect of any possible implementation method of the second aspect The function of the device.

In an eleventh aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. When the computer program is executed, the first aspect and any possible implementation of the first aspect are determined by the first aspect. A method executed by a device is executed.

In a twelfth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. When the computer program is run, the first aspect and any possible implementation of the first aspect are determined by the first The method executed by the second device is executed.

In a thirteenth aspect, a communication system is provided. The system includes: a first device that executes the method in any one of the foregoing first aspect and the first aspect, and executes the foregoing second aspect and the second aspect Any possible implementation of the second device of the method.

Description of the drawings

FIG. 1a is a schematic diagram of a beam width applicable to an embodiment of this application;

Figures 1b and 1c are schematic diagrams of an SSB structure and SSB transmission cycle provided by the implementation of this application;

FIG. 2a is a schematic diagram of an analog beam generating device applicable to an embodiment of this application;

FIG. 2b is a schematic diagram of a digital beam generating device applicable to an embodiment of this application;

FIG. 3 is a structural diagram of a communication system to which an embodiment of this application is applicable;

4, 5, 7a, and 7b are schematic diagrams of beam selection applicable to the embodiments of this application;

6a, 6b, 6c, 6d, and 6e are schematic diagrams of simulation results provided by embodiments of this application;

FIG. 7c provides a schematic diagram of sending a measurement signal according to an embodiment of this application;

FIG. 8, FIG. 9, FIG. 10, and FIG. 11 are structural diagrams of a communication device to which the embodiments of this application are applicable.

Detailed ways

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

Before introducing the embodiments of the present application, some terms of the embodiments of the present application will be explained to facilitate the understanding of those skilled in the art.

1) Network equipment, a device capable of providing random access for terminal equipment or a chip that can be installed in the device, including but not limited to: evolved Node B (eNB), radio network controller ( radio network controller (RNC), node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node) B, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission) in wireless fidelity (WIFI) system and reception point, TRP or transmission point, TP, etc., can also be 5G, such as NR, gNB in the system, or transmission point (TRP or TP), one or a group (including multiple base stations) in the 5G system. (One antenna panel) The antenna panel may also be a network node constituting a gNB or transmission point, such as a baseband unit (BBU), or a distributed unit (DU, distributed unit).

2) Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc., is a way to provide users with voice and/or data Connectivity equipment. For example, terminal devices include handheld devices with wireless connection functions, vehicle-mounted devices, and so on. At present, terminal devices can be: mobile phones (mobile phones), tablets, notebook computers, handheld computers, mobile Internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality ( Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids The wireless terminal in the transportation safety (transportation safety), the wireless terminal in the smart city (smart city), or the wireless terminal in the smart home (smart home), or the vehicle-to-Vehicle, V2V) Public wireless terminals, etc.

3) Wide beam and narrow beam: Generally speaking, the width of the beam can be defined as the beam width of XdB. For example, the beam width is defined as a beam width of 1 dB, a beam width of 3 dB, and so on. The XdB beamwidth includes a horizontal XdB beamwidth or a vertical XdB beamwidth. Normally, the wide beam and the narrow beam are related to the 3dB beam width of the beam. The 3dB beam width of the wide beam is relatively wide, such as 45 to 120 degrees. Generally, the function of the wide beam is to provide wide coverage of the broadcast signal. In contrast, the 3dB beam width of a narrow beam is narrow, such as 10 to 20 degrees. Compared with the wide beam, the narrow beam has higher beam gain and better side-lobe interference suppression capability, but the coverage width is narrower, and it is generally used for point-to-point communication. Narrow beams generally need to be determined through beam scanning and beam selection processes. As shown in Figure 1a, it is a schematic diagram of a 3dB beam width, with the maximum beam gain as the beam center direction, the maximum beam gain -3dB position as the boundary, and the angular width in the middle of the two sides of the boundary is 3dB beam width. The angular range between the two boundaries is called the beam bandwidth range.

4) Signal quality: The signal quality can be expressed as the signal-to-interference-to-noise ratio, which means the ratio of useful signal to interference + noise floor. The unit of signal quality is usually dB. In LTE, it can be further divided into reference signal-signal to interference plus noise ratio (RS SINR) and physical downlink shared channel (PDSCH) SINR.

5) Signal strength: no noise and interference are included. RSRP is usually used in the LTE system. RSRP refers to the average value of the signal power received on all REs carrying reference signals in a certain OFDM symbol; it is used to identify the downlink pilot strength of the cell (the power of a single pilot subcarrier), Does not contain noise and interference. RSRP measurement provides a measurement of the signal strength of a cell. It mainly distinguishes the priority of LTE candidate cells based on the signal strength of the cell, and is used as input for cell reselection and cell handover decisions.

6) Measurement signal. One measurement signal occupies multiple orthogonal frequency division multiplexing (OFDM) symbols. Measurement signals such as synchronization signal block SSB (SS/PBCH block), or primary synchronization signal (PSS) in SSB, or channel state information reference signal (CSI-RS), or secondary synchronization Signal or second synchronization signal (secondary synchronization signal, SSS). Among them, the synchronization signal block SSB (SS/PBCH block) is composed of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH), as shown in Figure 1b. As shown in Figure 1c, SSB is sent in periodic form, and the period of SSB can be 20ms. The SSB of multiple beam directions in one period can be limited to 5 ms (the transmission window of the SSB), and the SSB of multiple beam directions can be referred to as SSB Set in FIG. 1c. In Figure 1c, a 15kHz subcarrier spacing SCS is used, so the number of symbols within 1ms is 14. Each SSB occupies 4 consecutive OFDM symbols, including two SSBs within 1ms, and there is a certain symbol interval between adjacent SSBs.

7) Time unit: for example, one or more continuous radio frames, one or more continuous half-frames, one or more continuous subframes, one or more continuous radio frames Slot, one or more consecutive symbols, etc. For example, the wireless frame length is 10ms, the half-frame length is 5ms, the subframe length is 1ms, the slot length is 0.5ms, and a slot includes 14 symbols.

8) The first period, such as one or more continuous radio frames, one or more continuous half-frames, one or more continuous subframes, one or more continuous radio frames The time slot (slot), one or more consecutive symbols (symbol), etc. The first period is a pre-configured period for transmitting the measurement signal in the measurement signal transmitting device. The first period is a pre-configured period for receiving the measurement signal in the receiving device of the measurement signal. The period may be 20 ms, for example. The sending device may send the measurement signal in multiple consecutive 20ms, for example, if the 80ms includes 4 20ms, then the 80ms includes 4 first periods. There may also be a time interval between two adjacent periods. For example, 80 ms includes three first periods with a duration of 20 ms, and there is an interval of 10 ms between any two adjacent first periods. In addition, the first cycle includes at least four time units.

9) A set of coefficients of the analog filter corresponds to a beam. Refer to Figure 2a. The principle is: the analog filter has a set of phase shifters. By configuring the phase of the phase shifter, the phase shifter corresponds to a coefficient, then one The group phase shifter corresponds to a group of coefficients. For example, Figure 2a includes three phase shifters, then a set of coefficients can include three coefficients, which are coefficient 1, coefficient 2, and coefficient 3. The input signal of each phase shifter is the same, and the signal generated by the superposition of a group of phases has different signal gains in different directions, thereby forming a beam in space.

As shown in Figure 2a, it is the hardware structure of the analog filter, including baseband, radio frequency, analog beam control unit, phase shifter, antenna element, etc. The main feature is that the antenna board has a phase shifter device. The control unit can generate multiple sets of different coefficients of the analog filter by configuring the phase of each phase shifter, so that when the signal passes through the phase shifter and is sent out from the antenna element, The signal is superimposed on the phase shift corresponding to the phase of the phase shifter to form the effect of beamforming. In the example of FIG. 2a, there are three phase shifter devices on the antenna board, then a set of coefficients may include three coefficients, which are coefficient 1, coefficient 2, and coefficient 3. The multiple sets of different coefficients generated by the control unit come from the analog beam control unit. The analog beam control unit can first select multiple sets of analog filter coefficients and inform the control unit. The analog beam control unit can be deployed on the baseband or An independent unit.

The schematic diagram of the digital filter is shown in Figure 2b. The digital beam forming process does not require the participation of a phase shifter. Instead, a digital beam is formed by digitally weighting the multiple signals sent from the baseband to the antenna.

Specifically, the main difference between the analog beam and the digital beam is: the switching of the analog beam needs to be completed by adjusting the phase shifter, and the control signal needs to be transmitted to the antenna board to complete the switching after generation; the overall beam switching speed is slower than the digital beam , There can only be one analog beam at a time, and the analog beam between different times needs to be completed by adjusting the phase shifter. When the analog filter receives a signal, it can only receive one copy of the air interface data under the analog beam at a single moment. If it is a digital beam, the weighting of the digital beam is done on the baseband/RF board. There is no phase shifter, and the beam switching speed is very fast; different digital beams themselves have different weights; when receiving data, the baseband can choose different The digital weights are weighted, which is equivalent to different digital beams.

10) Relationship between multi-antenna system and analog filter: A multi-antenna system means that the device has multiple antennas, and the radio frequency link of the system is connected to the antenna, and there are multiple connection methods. The analog filter corresponds to a type of connection method, in which a radio frequency link is connected to multiple phase shifters at the same time, and each phase shifter is connected to an antenna. By configuring the phase of the phase shifter, different coefficients are generated to form Beam.

The "and/or" in this application describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. This situation. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. The multiple involved in this application refers to two or more. In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing description, and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating Or imply the order.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as long term evolution (LTE) systems, worldwide interoperability for microwave access (WiMAX) communication systems, and the fifth generation (5th generation). Generation, 5G) systems, such as new radio access technology (NR), and future communication systems.

In order to facilitate the understanding of the embodiments of this application, the application scenarios of this application will be introduced next. The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute implementation of this application. As for the limitation of the technical solutions provided by the examples, those of ordinary skill in the art will know that with the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

Fig. 3 shows a schematic diagram of a communication system suitable for an embodiment of the present application. The communication system 100 includes a first device 11 and a second device 12. The first device may be a first network device, such as a base station. The second device may be a second network device, or a terminal device, and the second network device may be, for example, a relay device. Generally, the position of the first device 11 is higher, and the position of the second device 12 is lower, and the second device 12 is easily affected by interference from interference signals in the surrounding environment. Both the first device 11 and the second device 12 have beamforming (beamforming, BF) capabilities, and can form a wide beam and a narrow beam at the air interface. Beam selection can be performed between the second device 12 and the first device 11. When the transmitting beam and the receiving beam between the devices are aligned, the second device 12 is connected to the first device 11 to perform subsequent communication, and the communication quality is good. The transmit beam alignment here means that the transmit beam has directivity, and the main lobe direction of the transmit beam points to the receiving device; the receive beam alignment means that the receive beam has directivity, and the main lobe direction of the receive beam points to the transmit device. Based on this, how to determine the transmitting beam and receiving beam between devices is a technical problem that needs to be solved. Determine the transmit beam and receive beam between two devices, in other words, determine the transmit coefficient of the transmit analog filter and the receive coefficient of the receive analog filter between the two devices.

Taking the site backhaul scenario as an example, the service is mainly downlink transmission, that is, the first device 11 sends data, and the second device 12 receives data. Therefore, it is mainly necessary to determine the transmitting beam of the first device 11 and the receiving beam of the second device 12.

As shown in Figure 4 below, with the first device 11 as the network device and the second device 12 as the terminal device, a method is provided to configure the sending coefficient of the sending filter of the network device and the receiving coefficient of the receiving analog filter of the terminal device. method. At the same time, it is also a method of selecting the transmitting beam and receiving beam of the network equipment and the terminal equipment.

As shown in Figure 4, the beam selection process is divided into three processes, namely p1, p2, and p3. Through these three processes, the beam used for downlink data transmission between the terminal device and the network device can be determined.

In the p1 process, the network device uses at least two different sets of first coefficients (sending wide beams) of the sending analog filter on the network device side to send the first measurement signals respectively. The first measurement signals may be SSB, CSI-RS, etc. . The terminal device uses a set of third coefficients (receiving wide beam) of the receiving analog filter on the terminal device side to receive at least two first measurement signals sent by the network device. The terminal device selects a set of target first coefficients (sending wide beams) of the analog filter used by the network device when sending data from the above-mentioned at least two different sets of first coefficients (sending wide beams) on the network device side. . When the terminal device selects a set of target first coefficients for the network device (for sending a wide beam), for example, a set of first coefficients corresponding to the first measurement signal with the best signal quality may be used as the target first coefficient. The terminal device may inform the network device of a set of target first coefficients selected for the network device in a physical random access channel (PRACH).

In the p2 process, the network device may use the set of target first coefficients (sending wide beams) selected by the terminal device in the p1 process to send configuration information to the terminal device. The configuration information includes at least two second measurement signals respectively corresponding to The network device side sends a set of second coefficients of the analog filter (sends a narrow beam). It should be noted that the network device selects multiple narrow beams corresponding to multiple sets of second coefficients in the p2 process according to the wide beam selected by the terminal device for the network device in the p1 process. For example, the beam bandwidth range of these narrow beams is within the beam bandwidth range of the wide beam. Wherein, the width of the beam corresponding to any set of first coefficients of the transmitting analog filter on the network device side is larger than the width of the beam corresponding to any set of second coefficients. Furthermore, the network device uses at least two different sets of second coefficients (sending narrow beams) of the sending analog filter to send the second measurement signals respectively. The terminal device selects a set of target second coefficients (sending narrow beams) of the analog filter used when the network device sends downlink data from multiple sets of different second coefficients (sending narrow beams) on the network device side.

In the p3 process, the network device may use a set of the target second coefficients selected by the terminal device in the p2 process (sending a narrow beam) to send at least two third measurement signals to the terminal device. The terminal device uses at least two different sets of fourth coefficients (receiving narrow beams) of the receiving analog filter on the terminal device side to receive the third measurement signal respectively. Wherein, the width of the beam corresponding to any set of third coefficients of the receiving analog filter on the terminal device side is greater than the width of the beam corresponding to any set of fourth coefficients. The terminal device may select a set of target fourth coefficients from at least two different sets of fourth coefficients (receiving narrow beams) as the receiving coefficients of the receiving analog filter of the terminal device (receiving narrow beams).

The first measurement signal, the second measurement signal, and the third measurement signal in the above example of FIG. 4 are signals of the same type. For example, the first measurement signal, the second measurement signal, and the third measurement signal may all be PSS, or both SSB, the first, second, and third are to distinguish the measurement signals sent in the three different processes of p1, p2, and p3.

The example in Figure 4 above is generally applicable to the configuration of high-specification channels and antennas on the network device side, and low-specification channels and antennas on the terminal device side. In the beam selection process, first determine the transmission coefficient of the transmission analog filter on the network device side. (Send narrow beam), and then determine the reception coefficient of the receiving analog filter on the terminal device side (Receive narrow beam).

In the site backhaul scenario, since in the actual deployment scenario, the first device 11 is located relatively high and is less interfered by the surrounding environment, and the second device 12 is located relatively low and is easily affected by the interference of the surrounding environment. For example, the signal of the same frequency or adjacent frequency sent by the network equipment or terminal equipment near the second equipment 12 interferes with the signal received by the second equipment 12. Since the location of nearby interfering devices is generally fixed, a typical feature of interfering signals is that they have a certain directionality.

In the p1 stage, when the terminal device uses a set of third coefficients (receiving wide beam) to receive the measurement signal, the interference signal whose interference direction is within the bandwidth of the receiving beam of the terminal device will be received, which will cause greater interference to the useful signal from the network device. , Which affects the quality of the received signal, causing the terminal device to deviate from the ideal beam corresponding to a set of target first coefficients of the network device selected by the terminal device during the p1 process. In the example of FIG. 4, since the beam bandwidth of the narrow beam transmitted by the network device in the p2 stage is within the beam bandwidth of the wide beam transmitted in the p1 stage, the network device in the p2 stage transmits the second measurement signal using the first analog filter. The second coefficient (sending a narrow beam) is determined according to a set of target first coefficients (sending a wide beam) selected by the terminal device for the network device in the p1 process. Because the set of target first coefficients (sending wide beams) selected in the p1 process is not accurate, the set of target second coefficients (sending narrow beams) selected in the p2 process are also inaccurate, which affects the subsequent communication quality.

Based on the problems in the example of FIG. 4, the present application provides another method for setting the transmission coefficient of the transmission filter and the reception coefficient of the reception filter between the communication between the first device and the second device. In other words, it is also a method for selecting the transmitting beam and receiving beam of the first device and the second device; it is also a method for the transmission coefficient of the transmitting filter and the receiving filter between the first device and the second device. How to choose coefficients. In this method, a first period is defined, and the first period includes multiple time units. The first device uses a set of coefficients of the sending analog filter to send the first measurement signal in different time units in the first period. The second device uses multiple sets of different coefficients of the receiving analog filter to respectively receive the first measurement signal. The second device selects a set of coefficients from multiple sets of different coefficients as the receiving coefficient of the second device. The first device uses different coefficients of the transmitting analog filter to respectively transmit the second measurement signal in different time units. The second device receives the second measurement signal by using the determined reception coefficient. And select a set of transmit coefficients of the transmit analog filter of the first device that matches the receive coefficient of the second device. In addition, a set of transmission coefficients of the transmission analog filter of the selected first device is notified to the first device, and the specific process of notifying the coefficients is described in step 504.

Since the second device uses multiple sets of different coefficients to receive the first measurement signal instead of using a set of third coefficients (receiving a wide beam) in the example of FIG. 4 to receive the first measurement signal, the reception of interference signals to the second device can be reduced. The impact of the coefficient selection process. In addition, when the beam corresponding to any set of coefficients used to receive the first measurement signal is a narrow beam, it is less likely that the interference signal is within the beam bandwidth of the narrow beam, and the second device receives the measurement signal by using the narrow beam , The selected reception coefficient of the second device can effectively suppress interference signals.

Next, as shown in Figure 5, a beam selection method is provided, which can also be understood as a method for determining filter coefficients. The first device can send measurement signals using a wide beam and a narrow beam in any period. Any cycle can be called the first cycle. The specific process in the first cycle is as follows:

Step 501: The first device uses a set of first coefficients of the sending analog filter to send first measurement signals to the second device on at least two different first time units. Correspondingly, the second device adopts at least two different sets of third coefficients of the receiving analog filter, and receives the first measurement signal from the first device on the at least two different first time units.

Specifically, the second device uses at least two different sets of third coefficients of the receiving analog filter, and on the at least two first time units, respectively receives the transmitting analog filter from the first device using the first device. The first measurement signal of a set of first coefficients is respectively sent on the at least two different first time units.

The first device sends at least two first measurement signals, and the first measurement signals may be, for example, SSB, or PSS, or CSI-RS, or SSS. Each first measurement signal corresponds to a different first time unit, and each first measurement signal corresponds to a set of first coefficients. The second device receives the first measurement signal at the first time unit when the first device sends the first measurement signal. The third coefficient corresponding to each first measurement signal received by the second device is different.

For example, the first cycle includes 10 radio frames (10ms), one radio frame includes two half frames (5ms), the first time unit is one half frame, and the first device can be in each half frame of the first 5 radio frames If the PSS is sent as the first measurement signal in the middle, the first device sends 10 first measurement signals, and the same set of first coefficients (sending wide beam) are used to send the first measurement signals in different half frames. Correspondingly, the second device uses a set of third coefficients of the receiving analog filter of the second device to receive PSS in each half frame of the first 5 radio frames of the first cycle, and the second device can receive 10 first For the measurement signal, a set of third coefficients of the first measurement signal received in different fields are different. For example, the second device uses the first set of third coefficients (corresponding to receiving beam 1) to receive the first measurement signal in the first half frame of the first period, and uses the second set of coefficients in the second half frame of the first period. The third coefficient (corresponding to receiving beam 2) receives the first measurement signal,..., the tenth set of third coefficients (corresponding to receiving beam 10) is used to receive the first measurement signal in the tenth half frame of the first cycle. The 10 sets of third coefficients are different, and the corresponding receiving beam directions are also different.

For another example, the first cycle includes 8 radio frames (10ms), one radio frame includes two half frames (5ms), the first time unit is one half frame, and the first device can perform the first half of each radio frame If the PSS is sent as the first measurement signal in the frame, the first device sends 8 first measurement signals, and the same set of first coefficients are used to send the first measurement signals in different half-frames. Correspondingly, the second device uses a set of third coefficients of the receiving analog filter of the second device to receive the PSS in the first half frame of each radio frame in the first period, that is, the second device receives the PSS in the first period. The PSS is received in the odd half frame. The second device can receive eight first measurement signals, and a set of third coefficients of the first measurement signal received in different half frames are different. For example, the second device uses the first set of third coefficients (corresponding to receiving beam 1) to receive the first measurement signal in the first half of the first radio frame, and in the first half of the second radio frame Use the second set of third coefficients (corresponding to receiving beam 2) to receive the first measurement signal,..., use the eighth set of third coefficients (corresponding to receiving beam 8) to receive the first measurement signal in the first half of the eighth radio frame One measurement signal. The eight sets of third coefficients are different, and the corresponding receiving beam directions are also different.

Step 502: The second device selects a set of third coefficients from the at least two different sets of third coefficients as a set of receiving coefficients of the receiving analog filter. Subsequently, the second device may use the selected set of reception coefficients to receive the information/data sent by the first device.

The second device may select a group of third coefficients as a group of reception coefficients from at least two different sets of third coefficients according to the signal reception conditions respectively corresponding to the at least two first measurement signals. For example, the second device may select a set of third coefficients from the at least two different sets of third coefficients as the receiving coefficients according to the signal quality corresponding to the at least two first measurement signals, respectively . For example, a set of third coefficients associated with the first measurement signal with the best signal quality is used as the reception coefficient. Or, the second device may select a set of third coefficients from the at least two different sets of third coefficients as the receiving coefficients according to the signal strengths respectively corresponding to the at least two first measurement signals. For example, a set of third coefficients associated with the first measurement signal with the strongest signal strength is used as the reception coefficient.

Further, the second device may also select a group of coefficients from the at least two different sets of third coefficients as the transmission coefficients of the transmission analog filter of the second device. It may be that the second device selects a set of third coefficients from at least two different sets of third coefficients as a set of transmission coefficients of the second device according to the signal reception conditions respectively corresponding to the at least two first measurement signals. For example, the second device determines a set of third coefficients associated with the first measurement signal with the strongest signal strength as the transmission coefficient. Alternatively, the second device may select a set of coefficients from the at least two different sets of third coefficients as the transmission coefficients according to the signal quality corresponding to the at least two first measurement signals, for example, The second device determines a set of third coefficients associated with the first measurement signal with the best signal quality as the transmission coefficient. Still alternatively, the second device may also use the selected set of reception coefficients of the second device as a set of transmission coefficients of the second device. The sending coefficient and the receiving coefficient of the second device may be the same or different. Subsequently, the second device may use the sending coefficient to send information/data to the first device.

The signal sent by the first device propagates through the spatial multipath to the second device side, and the signal with the strongest signal strength reaches the path corresponding to the signal with the smallest signal fading. Based on the reciprocity of the channel, the second device selects this path for transmission, and the signal sent by the second device reaches the first device and experiences the least fading. Based on this principle, when the first device sends multiple measurement signals, the second device uses different beams to receive the measurement signals respectively, and determines the downlink receiving beam of the second device based on the signal optimization criterion, that is, the receiving coefficient of the second device. The second device may also determine the uplink transmission beam of the second device based on the optimal signal strength criterion, that is, the transmission coefficient of the second device, so as to achieve the objective of anti-interference in downlink reception and minimum attenuation of the uplink transmission signal. When the first device sends the first measurement signal, it may send the measurement signal through a wide beam. When the second device uses different beams to receive the measurement signals respectively, it may use different narrow beams to receive the measurement signals respectively. When the receiving beam corresponding to any set of third coefficients used by the second device to receive the first measurement signal is a narrow beam, it is less likely that the interference signal is within the beam bandwidth of the narrow beam, and the second device adopts a narrow beam. The beam receives the measurement signal, and the selected reception coefficient of the second device can effectively suppress the interference signal.

In addition, the second device uses different reception coefficients to receive the measurement signal sent by the first device with the same transmission coefficient. In this way, using a many-to-one approach in which the reception coefficient of the local end changes and the transmission coefficient of the opposite end does not change, the second device The reception coefficient used for communication of the second device is selected from the different reception coefficients of the second device, which can better avoid communication interference.

Next, referring to Fig. 6a, Fig. 6b, Fig. 6c, Fig. 6d, and Fig. 6e, a schematic diagram of a simulation result of determining the receiving beam of the second device is introduced:

The simulation condition is: the power of the first measurement signal received by the second device from the first device is -89dBm, the signal incident angle of the first device is 0 degree; the interference power received by the second device is -45dBm. The incident angle of the interference signal deviates from the incident angle of the first device signal by 20 degrees. The number of antennas of the first device and the second device is 8, and the interval of the first measurement signal is 5 ms. The first device sends 7 first measurement signals, and the second device uses 7 different sets of third coefficients to receive the first measurement signals respectively. The beam 3dB width corresponding to each set of third coefficients is 15 degrees, and the adjacent two sets of third coefficients The separation angle of the main lobe direction of the beam corresponding to the coefficient is 10 degrees.

In Figure 6a, the beam index corresponding to a set of third coefficients selected by the second device based on the reference signal receiving power (RSRP) is 4; in Figure 6b, the second device is based on the reference signal The beam index corresponding to a set of third coefficients selected by the reference signal received quality (RSRQ) is 5; in Figure 6c, the second device selects a set of first coefficients based on the received signal strength indicator (RSSI). The beam index corresponding to the three coefficients is 2; in Figure 6d, the beam index corresponding to a set of third coefficients selected by the second device based on the signal to interference plus noise ratio (SINR) is 4 or 5 .

In Figure 6d, the beam index 5 selected by the second device based on RSRQ is used as the receive beam (equivalent to the receive beam index 5 corresponding to the receive coefficient selected by the second device). Compared with the beam index 4 selected based on RSRP, the downlink received signal interference The noise ratio increased from -31db to -22.4db, an increase of 8.6dB.

Referring to Fig. 6e, the beam index 4 selected by the second device based on RSRP is used as the transmitting beam. Compared with the beam index 5 selected based on RSRQ as the transmitting beam, the uplink received signal power of the first device is increased by 11-2.6=8.4dBi.

Step 503: The first device uses at least two different sets of second coefficients of the transmit analog filter of the first device to send second measurements to the second device on at least two different second time units. Signal. Correspondingly, the second device adopts the reception coefficient of the receiving analog filter of the second device determined in step 502, and receives data from the first device on at least two different second time units. The second measurement signal.

Specifically, the second device adopts the receiving coefficient of the receiving analog filter of the second device, and receives data from the first device using the transmitting analog filter of the first device in at least two second time units. The second measurement signals of at least two different sets of second coefficients are respectively sent on at least two different second time units.

The first device sends at least two second measurement signals. The second measurement signal may be, for example, SSB, or PSS, or CSI-RS. The first measurement signal and the second measurement signal are generally the same type of signal, for example, the first measurement signal. Both the second measurement signal and the second measurement signal are SSB, or both are PSS, or both are CSI-RS. The second time unit corresponding to each second measurement signal is different, and the set of second coefficients corresponding to each second measurement signal is different. The second device receives at least two second measurement signals, each second measurement signal corresponds to a different second time unit, and each second measurement signal corresponds to the same set of reception coefficients.

The width of the beam corresponding to the set of first coefficients of the transmitting analog filter of the first device is greater than the width of the beam corresponding to any set of second coefficients. It can also be understood that the first device uses a wide beam to send the first measurement signal, and uses a narrow beam to send the second measurement signal.

For example, the first cycle includes 10 radio frames (10ms), one radio frame includes two half frames (5ms), the first time unit is one half frame, and the first device can use each half frame of the next 5 radio frames If the PSS is sent as the second measurement signal, the first device sends 10 second measurement signals, and the second coefficients (narrow beams) of the second measurement signals sent in different half frames are different. For example, the first device uses the first set of second coefficients (corresponding to sending narrow beam 1) to send the second measurement signal in the 11th half frame of the first period, and uses the second measurement signal in the second half frame of the first period. The second set of coefficients (corresponding to the narrow transmit beam 2) sends the second measurement signal,..., the tenth set of second coefficients (corresponds to the narrow transmit beam 10) is used to send the second measurement signal in the 20th half frame of the first cycle . The 10 sets of second coefficients are different, and the corresponding narrow beam directions are also different. Correspondingly, the second device uses a set of reception coefficients of the receiving analog filter to receive the PSS in each half of the last 5 radio frames of the first period, and the second device can receive 10 second measurement signals with different half frames. The same set of reception coefficients is used in the frame to receive the second measurement signal.

For another example, the first period includes 8 radio frames (10ms), one radio frame includes two half frames (5ms), the first time unit is one half frame, and the first device can perform the If the PSS is sent as the second measurement signal in the frame, the first device sends 8 second measurement signals, and the second coefficients of the second measurement signals sent in different half frames are different. For example, the first device uses the first set of second coefficients (corresponding to sending narrow beam 1) in the second half of the first radio frame to send the second measurement signal, and in the second half of the second radio frame Using the second set of second coefficients (corresponding to the transmission of narrow beam 2) to send the second measurement signal, ..., the eighth set of second coefficients (corresponding to the transmission of narrow beam 8) in the second half of the eighth radio frame ) Send the second measurement signal. The eight sets of second coefficients are different, and the corresponding beam directions are also different. Correspondingly, the second device uses a set of reception coefficients of the receiving analog filter of the second device to receive the PSS in the second half frame of each radio frame in the first period, that is, the second device receives the PSS in the first period of the first period. PSS is received in an even number of half frames. The second device can receive 8 second measurement signals, and the same set of reception coefficients are used to receive the second measurement signals in different half frames.

For another example, as shown in Figure 1c, the first measurement signal and the second measurement signal are SSB, and the first device sends 8 signals within the first 5ms of each SSB cycle (the cycle length is configurable, 20ms in Figure 1c). SSB, each SSB occupies 4 OFDM symbols. In a possible manner, the 4 OFDM symbols occupied by the SSB are used as the first time unit or the second time unit. The 8 SSBs in one SSB period correspond to 8 first time units, or correspond to 4 first time units and 4 second time units. In another possible manner, the 8 SSBs in the first 5 ms of one SSB period are used as a group of SSBs, and a group of SSBs are used as the first measurement signal or the second measurement signal. The first time unit is 20ms, or the first 5ms within 20ms; the second time unit is 20ms, or the first 5ms within 20ms. The first period may include multiple 80ms PBCH periods.

When the first device sends the first measurement signal on the first time unit and the second measurement signal on the second time unit, at least two of the at least two different first time units are earlier than the at least At least one of the two different second time units; and at least two of the at least two different second time units are later than at least one of the at least two different first time units. That is, it is necessary to ensure that among the measurement signals sent by the first device in the first period, there must be a situation where a wide beam is used to send at least two first measurement signals, and then a narrow beam is used to send at least two second measurement signals. This is so that the second device first receives the measurement signal sent by the first device using the wide beam according to the different receiving beams of the second device, so as to determine the receiving beam of the second device. Then, the second device receives the measurement signals sent by the first device using different narrow beams according to the selected receiving beam, so as to determine the narrow beam of the first device for the first device.

In an example, in the first period, the transmission time of any first measurement signal is earlier than the transmission time of any second measurement signal, that is, any first time unit is earlier than any second time unit , Any second time unit is later than any first time unit.

For example, in the example of FIG. 7a, the time length of the first cycle is (m+n)T, m is an integer greater than or equal to 2, and n is an integer greater than or equal to 2. Among them, the first device uses a wide beam to send n first measurement signals, the time unit of each first measurement signal is T, and the second device uses a different beam to receive the first measurement signal sent by the first device, and selects The receiving beam of the second device is the receiving coefficient of the receiving analog filter. Then, the first device uses m different narrow beams to respectively send second measurement signals, and the time unit of each second measurement signal is T. The second device uses the determined reception coefficient to receive multiple second measurement signals, and then selects the transmission beam of the first device, that is, the transmission coefficient of the transmission analog filter of the first device. Finally, the second device notifies the first device of the transmission coefficient of the transmission analog filter of the first device, so that the first device determines the transmission beam selected by the second device for the first device. For the process of the second device notifying the first device of the transmission coefficient of the transmission analog filter of the first device, refer to the description in step 504.

The first device first uses the same wide beam to send the first measurement signal, and then uses a different narrow beam to send the second measurement signal. This way of sending measurement signals can facilitate the second device to quickly select the sending coefficient of the sending analog filter of the first device and the receiving coefficient of the receiving analog filter of the second device, which improves the determination of the matching between the two devices. The efficiency of the transmit coefficient of the transmit analog filter and the receive coefficient of the receive analog filter.

In another example, there is one second time unit between two adjacent first time units.

For example, a group of first time units is defined as two adjacent time units, and in the first period, there is one second time unit between at least two groups of first time units. For example, the first cycle includes 8 time units, and the arrangement order is the first time unit, the first time unit, the second time unit, the second time unit, the first time unit, the first time unit, the second time unit, and the first time unit. Two time units. For another example, the first cycle includes 9 time units, the order of arrangement is: first time unit, first time unit, second time unit, first time unit, first time unit, second time unit, first time unit , The first time unit, the second time unit.

For another example, in the example of FIG. 7b, in the first period, there is a second time unit between any two adjacent first time units, that is, the first device uses a wide beam and a narrow beam to alternately transmit the first time unit. A measurement signal and a second measurement signal. As shown in Figure 7b, the time length of the first cycle is 2*2nT, the first device uses a wide beam to send 2n first measurement signals, the time unit of each first measurement signal is T, and another 2n narrow beams are used The second measurement signals are sent separately, and the time unit of each second measurement signal is T. The difference between Fig. 7b and Fig. 7a is that the sequence of sending the first measurement signal by the first device is different from that of sending the second measurement signal, and the other parts are the same. Repeat it again. Since the time for multiple second devices to connect to the first device is not fixed, using a wide beam and a narrow beam to alternately send measurement signals can enable the second device to connect to the first device more quickly.

When multiple second devices and the first device determine the reception coefficient and the transmission coefficient, the time for each second device to access the first device is not fixed. The first device transmits the measurement signal through the wide beam and the narrow beam. Compared with the first measurement signal using the wide beam and then the second measurement signal using the narrow beam, it avoids that a certain second device misses a certain first measurement signal. A part of the first measurement signal sent using a wide beam during one cycle needs to occupy the next first cycle to complete the problem of determining the coefficient. In this case, since the first time unit and the second time unit overlap in the time domain, the second device can start the coefficient determination process in the nearest first time unit, and the second device is completing the first time unit. After the measurement signal is measured and the reception coefficient of the local side is determined, the second measurement signal of the opposite side can be measured in the nearest second time unit to determine the transmission coefficient of the opposite side. In this way, multiple second devices can quickly select the transmission coefficients of the transmitting analog filter of the first device and the receiving coefficients of the receiving analog filter of the second device, and the transmission coefficient and the receiving coefficient for determining the match between the two devices can be improved. The efficiency of the receiving coefficient.

In addition, in the example of FIG. 7b, after the second device determines the receiving coefficient of the receiving analog filter of the second device, the second device may also use the receiving coefficient of the receiving analog filter, On at least one first time unit, a first measurement signal from the first device is received. Specifically, the second device uses the receiving coefficients of the receiving analog filter, and receives a set of first coefficients from the transmitting analog filter of the first device by the first device on at least one first time unit A first measurement signal sent on at least one first time unit. For example, in the 2n+1th time unit, in the time unit after the 2n+1th time unit, the first measurement signal sent by the first device and the second device are all received by the determined receiving analog filter. Coefficient to receive.

Furthermore, before the second device determines the reception coefficient of the reception analog filter of the second device, the second device may also use at least one of the at least two different sets of third coefficients of the reception analog filter. The three coefficients respectively receive the second measurement signal sent by the first device on at least one second time unit. Specifically, the second device may also use at least one set of third coefficients out of the at least two different sets of third coefficients of the receiving analog filter, and receive at least one second time unit from the first device using the first set of third coefficients. A device sends at least one set of different second coefficients of an analog filter, and sends a second measurement signal on at least one second time unit. For example, in Figure 7b, in the second time unit, the second device can multiplex a set of third coefficients of the first measurement signal received in the first time unit, and receive the second measurement signal. For another example, in the fourth time unit, the second device may multiplex a set of third coefficients of the first measurement signal received in the third time unit, and receive the second measurement signal. Or in the fourth time unit, the second device may multiplex a set of third coefficients of the first measurement signal received in the first time unit, and receive the second measurement signal.

Step 504: The second device selects a set of target second coefficients from at least two different sets of second coefficients of the first device, and informs the first device of the target second coefficients. Specifically: the second device sends a first instruction to the first device, and correspondingly, the first device receives a first instruction from the second device, and the first instruction is used to indicate a target identifier, The target identifier is included in the identifiers respectively associated with at least two of the second measurement signals. That is, the measurement signal identified by the target identifier is one of the at least two second measurement signals.

Each of the above-mentioned second measurement signals is associated with an identifier, and is associated with a set of second coefficients used to transmit the second measurement signal in the transmitting analog filter, that is, the second measurement signal, the identifier, and the set of coefficients used for transmitting the second measurement signal. A set of second coefficients of the second measurement signal are related to each other, or the three have a one-to-one correspondence. The identifier may be the index of the second measurement signal or the time-frequency resource location of the second measurement signal. The index of the second measurement signal may be the index of the sequence of the second measurement signal. For example, the first device and the second device pre-appoint the identification of each second measurement signal, or the first device sends the identification of each second measurement signal to the second device.

For example, when the second device selects the sending coefficient for the first device, the second device may select the target second measurement signal and determine the second time unit corresponding to the target second measurement signal. Furthermore, the second device searches for the identifier corresponding to the second time unit, and carries the identifier in the first instruction to notify the first device. Correspondingly, the first device can find the corresponding second time unit according to the received identifier, and then find the corresponding target second measurement signal according to the second time unit, and then obtain the target associated with the target second measurement signal The second coefficient, using the target second coefficient as the sending coefficient of the first device.

When the identifier is the index of the second measurement signal, the index may also be carried in the measurement signal. The second device may inform the first device of the index of the selected target second measurement signal in the first indication.

When the measurement signal is SSB, in one half frame (5ms), the maximum number of SSB blocks sent can be 4 or 8 or 64. The SSB is numbered from 0 to L-1 in the field in which it is located. When the number of SSB blocks sent is 4 or 8, the sequence index (index) corresponding to the SSB is indicated by the DMRS. When the number of SSB blocks sent is 64, the sequence index (index) corresponding to the SSB can be determined by the SSB-index-explicit field in the demodulation reference signal (DMRS) and master information block (MIB). Numerical indication.

For another example, when the second device selects the sending coefficient for the first device, the second device may select the target second measurement signal and determine the second time unit corresponding to the target second measurement signal. Furthermore, the second device searches for the time-frequency resource location corresponding to the second time unit, and sends the first indication on the time-frequency resource identified by the time-frequency resource location. Then the first device can find the corresponding time unit according to the time-frequency resource location received the first indication, and then find the corresponding target second measurement signal according to the time unit, and then obtain the target second measurement signal associated with the target second measurement signal. Two coefficients, using the target second coefficient as the sending coefficient of the first device.

The second device selects a set of transmission coefficients for the first device to be used by the first device to send data, that is, selects a suitable second measurement signal, and informs the first device of its associated identification, then the first device can determine according to the identification A corresponding set of sending coefficients. In an example, the second device may determine the target identifier of the measurement signal according to the signal quality of the received at least two second measurement signals. It may also be based on the received at least two second measurement signal strengths to determine the target identifier of the measurement signal. In addition, the second device adopts the same reception coefficient, and receives the measurement signal sent by the first device with different transmission coefficients. In this way, the one-to-many method with the local reception coefficient unchanged and the peer transmission coefficient changing is adopted, and the second device Selecting the transmission coefficient of the first device for communication from the different reception coefficients of the first device can better avoid communication interference.

Step 505: The first device determines the transmission coefficient of the transmission analog filter of the first device based on the target identifier. Specifically, the first device determines the second measurement signal associated with the target identifier, and determines a set of second coefficients associated with the associated second measurement signal, and uses the associated set of second coefficients as the associated set of second coefficients. The transmitting coefficient of the transmitting analog filter of the first device. Subsequently, the first device may use a set of the transmission coefficients to send information/data to the second device.

In summary, the second device uses different reception coefficients to receive the first measurement signal sent by the first device in different time units, and selects the reception coefficient of the receiving analog filter of the second device from the different coefficients. Then, according to the at least two second measurement signals respectively received in different time units using the reception coefficient, the transmission coefficient of the transmission analog filter of the first device is selected for the first device. In this way, the second device determines the transmit coefficient of the transmit analog filter of the first device and the receive coefficient of the receive analog filter of the second device. Subsequent use of transmission coefficients to send data and use of reception coefficients to receive data can improve communication quality.

Further, the first device may also determine a set of reception coefficients of the reception analog filter of the first device.

Optionally, considering that the proportion of uplink services of the first device is small and the interference is small, the uplink receiving beam of the first device can be multiplexed with the downlink sending beam, and the first device can also use the transmit analog filter of the first device A set of transmit coefficients of is used as a set of receive coefficients of the receive analog filter of the first device.

In addition, the first device and the second device may agree on the positions of the time units corresponding to the first measurement signal and the second measurement signal sent by the first device in the first period. Of course, the first device may also notify the second device, and the first device sends the position of the time unit corresponding to the first measurement signal and the second measurement signal in the first period. For different first devices, the positions of the time units for sending the first measurement signal and the second measurement signal in the first period may be different or different. Optionally, if the first device sends a second instruction to the second device, the second device receives a second instruction from the first device, and the second instruction is used to instruct the first device The at least two first measurement signals sent by the device respectively correspond to the position of the first time unit in the first period, and the at least two second measurement signals sent by the device respectively correspond to the second time unit in the first period. Location within. Then, the second device may determine the positions of the first time unit and the second time unit in the first period according to the second instruction. The first device instructs the second device to use the position of the time unit for sending the first measurement signal and the second measurement signal by the first device, so that the time when the first device sends the measurement signal can be flexibly configured. For example, the position of the first time unit configured in the first device A in the first period is different from the position of the first time unit configured in the first device B in the first period. For example, the first device A is as shown in Figure 7a. The example configures the time unit, and the first device B configures the time unit according to the example shown in FIG. 7b.

The first device may send the second instruction to the second device through a system message, for example, a master information block (MIB) or a system information block (system information blocks, SIB). For example, you can add the following information in MIB or SIB:

Length of the first period: First Period Frame Number, which is the number of system frames included in the first period;

The offset of the starting point of the first period relative to the system frame First Period Frame Offset;

The arrangement of time units in the first period: First Period Time Slot Pattern or First Period Time Slot Bitmap, etc.

One possible way is: First Period Time Slot Pattern = 0, each of the first half of the period in the first period is a first time unit, and each half of the second half of the period in the first period is a second Time unit.

Another possible way is: First Period Time Slot Pattern = 1, the field with odd field numbers in the first period is the first time unit, and the field with even field numbers in the first period is the first time unit. Two time units.

One possible way is: The i-th bit of First Period Time Slot Bitmap corresponds to the time unit type of the i-th field in the first period. If i is 0, the field is the first time unit. If i is 1, the field is the second time unit.

The first device may also send the second indication to the second device through a radio resource control (Radio Resource Control, RRC) message, for example, a new cell (First Period) is added to the RRC message to carry the second indication.

An example of the newly added cell First Period:

First Period:: = SEQUENCE{

First Period Frame Number BIT STRING(SIZE(6)),

First Period Frame Offset INTEGER(0..15),

First Period Time Slot Pattern ENUMERATED{extended} OPTIONAL

First Period Time Slot Bitmap ENUMERATED{extended} OPTIONAL

}.

A set of coefficients (beams) for transmitting configuration information may be agreed between the first device and the second device, and the first device uses the agreed set of coefficients (beams) in the first device to send the first device to the second device. In the second instruction, the second device uses an agreed set of coefficients (beams) in the second device to receive the second instruction.

As shown in FIG. 7c, there is provided a schematic diagram of the time unit for the first device to notify the second device of the measurement signal when the measurement signal is PSS. Generally, PSS is sent once in a half-frame, that is, a time unit T is a half-frame. With reference to Figure 7a, the period includes (m+n)*T, and the half-frame numbers are 0 to (m+n). )*T. Then the first device may instruct the second device to send the number of the half frame corresponding to the first measurement signal and the second measurement signal respectively.

Or the agreement stipulates the length of the first period and the number of time units included in the first period, and the first device is using a second instruction to instruct the at least two first measurement signals sent by the first device to respectively correspond to the first When the position of the time unit in the first period and the position of the second time unit in the first period corresponding to the at least two second measurement signals sent, the first device may be instructed to send the first measurement signal And the rule of sending the second measurement signal. For example, as shown in FIG. 7a, the first time unit of any first measurement signal is earlier than the second time unit of the second measurement signal, or as shown in FIG. There is a second measurement signal between any two adjacent first measurement signals sent by a device. For example, it is indicated by a bit value. When the value is 1, it means that the first time unit of any first measurement signal is earlier than the second time unit of the second measurement signal. When the value is 0, it means the first time unit of the second measurement signal. There is a second measurement signal between any two adjacent first measurement signals sent by a device.

It may also be that the protocol stipulates that the at least two first measurement signals sent by the first device correspond to first time units, and the at least two second measurement signals sent by the first device respectively correspond to second time units, and the first device is not required. Send to the second device.

In addition, the first device may send the first measurement signal and the second measurement signal in multiple cycles, and the multiple cycles may have the same or different time lengths as the first cycle. For example, the first device is configured with three cycles for sending measurement signals, the time length of the first cycle is 20 ms, the time length of the second cycle is 40 ms, and the time length of the third cycle is 50 ms.

In a possible implementation, the transmitting analog filter and the receiving analog filter in the first device may be different filters. In order to reduce the hardware components of the first device, the transmitting analog filter and the receiving analog filter in the first device may be one filter. Similarly, the transmitting analog filter and the receiving analog filter in the second device may be the same filter or different filters. When the number of phase shifters of the transmitting analog filter in a device is the same as the number of receiving analog filters, a set of receiving coefficients of the device can be multiplexed with a set of transmitting coefficients. When the number of phase shifters of the transmitting analog filter is different from the number of receiving analog filters, and the number of coefficients included in a set of receiving coefficients is different from the number of coefficients not included in a set of transmitting coefficients, the device’s A set of reception coefficients cannot be multiplexed with a set of transmission coefficients.

In the foregoing embodiment, the application scenario is: the first device may be a first network device, such as a base station; the second device may be a second network device, or a terminal device, and the second network device may be, for example, Relay equipment. The technical solutions of the foregoing embodiments are also applicable to scenarios where the first device and the second device are switched in order, that is, it is applicable to the first device being a second network device (for example, a relay device) or a terminal device, and the second device is the first network device. Equipment, such as a base station scenario.

For convenience of description below, the first device may be a first network device, such as a base station; the second device may be a second network device, or a terminal device, and the second network device may be, for example, a relay device. The scene is defined as scene 1. The scenario where the first device and the second device are switched in order, that is, it is applicable to the scenario where the first device is a second network device (such as a relay device) or a terminal device, and the second device is a first network device, such as a base station, which is defined as Scene 2.

The difference between scenario 1 and scenario 2 is:

First, in the second instruction sent by the first device to the second device in scenario 1, the first time unit corresponding to the at least two first measurement signals sent by the first device, and the sent The second time units respectively corresponding to the at least two second measurement signals may be applicable to multiple second devices. For example, the second indication information may be broadcast by the first device to the second device. In scenario 2, the first time unit and the second time unit such as the second indication sent by the first device to the second device are allocated to the designated first device, that is, only applicable to this first device.

Secondly, in scenario 1, the second device does not need to be connected to the first device, and the second device can perform the process of determining the transmission coefficient of the second device and the reception coefficient of the first device, as well as other processes in the foregoing embodiment. In step 2, the first device needs to be connected to the second device before the second device can perform the process of determining the transmission coefficient of the second device and the reception coefficient of the first device, as well as other processes in the foregoing embodiment.

The foregoing describes the method for determining filter coefficients in the embodiments of the present application, and the communication device for beam selection in the embodiments of the present application will be introduced in the following. The method and the device are based on the same technical idea. Since the principles of the method and the device to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

Based on the same technical concept as the above method for determining filter coefficients, as shown in FIG. 8, a communication device 800 is provided. The device 800 can perform the above-mentioned methods in FIG. 4, FIG. 5, FIG. 7a, and FIG. 7b. In order to avoid redundancy, the steps performed by the device will not be detailed here. The apparatus 800 may be a first device or a chip applied in the first device. The device 800 may include: a transceiver module 820, a processing module 810, and optionally, a storage module 830; the processing module 810 may be connected to the storage module 830 and the transceiver module 820 respectively, and the storage module 830 may also be connected to the transceiver module 820 .

In an example, the transceiver module 820 can be used to send the first coefficients of the analog filter to the second device in at least two different first time units in the first period. A measurement signal; and in the first period, at least two different sets of second coefficients of the transmitting analog filter are used to respectively send second coefficients to the second device on at least two different second time units Measurement signal; wherein each of the second measurement signals is associated with an identifier, and is associated with a set of second coefficients used to send the second measurement signal in the sending analog filter; the at least two different first At least two of the one time unit is earlier than at least one of the at least two different second time units, and at least two of the at least two different second time units are later than the at least two At least one of the different first time units; and receiving a first indication from the second device, the first indication being used to indicate a target identifier, and the target identifier is included in the at least two second measurement signals In the respectively associated identifiers; the width of the beam corresponding to the set of first coefficients of the transmitting analog filter is greater than the width of the beam corresponding to any set of second coefficients. The processing module 810 may be configured to determine the sending coefficient of the sending analog filter of the device based on the target identifier.

In another example, the transceiver module 820 is further configured to send a second indication to the second device, and the second indication is used to indicate that the at least two first measurement signals sent by the apparatus are respectively The corresponding position of the first time unit in the first period, and the position of the second time unit in the first period corresponding to the at least two second measurement signals sent.

In another example, the processing module 810 is further configured to determine the sending coefficient of the sending analog filter as the receiving coefficient of the receiving analog filter of the device.

In an example, the storage module 830 may be used to store the first period, the first time unit, the second time unit, the sending coefficient of the sending analog filter, and the receiving coefficient of the receiving analog filter.

The communication device can be used in communication equipment, circuits, hardware components, or chips.

The aforementioned processing module 810, storage module 830, and transceiver module 820 may be connected through a communication bus.

The storage module 830 may include one or more memories, and the memories may be devices for storing programs or data in one or more devices or circuits. The storage module 830 can store computer execution instructions of the method on the terminal, access gateway, AMF network element, and SMF network element side, so that the processing module 810 executes the terminal, access gateway, AMF network element, and SMF network element side in the above-mentioned embodiment. Methods. The storage module 830 may be a register, a cache, a RAM, etc., and the storage module 830 may be integrated with the processing module 810. The storage module 830 may be a ROM or another type of static storage device that can store static information and instructions, and the storage module 830 may be independent of the processing module 810.

The transceiver module 820 may be an input or output interface, pin or circuit, or the like.

Based on the same technical concept as the above method for determining filter coefficients, as shown in FIG. 9, a communication device 900 is provided. The device 900 can perform the method described in FIGS. 4, 5, 7a, and 7b. In order to avoid redundancy, the steps performed by the device will not be detailed here. The apparatus 900 may be a second device, or may be a chip applied in the second device. The device 900 may include: a transceiver module 920, a processing module 910, and optionally, a storage module 930; the processing module 910 may be connected to the storage module 930 and the transceiver module 920 respectively, and the storage module 930 may also be connected to the transceiver module 920 .

In an example, the transceiver module 920 is configured to use at least two different sets of third coefficients of the receiving analog filter to receive the data from the first time unit on at least two different first time units in the first period. The first measurement signal of the device; the processing module 910 is configured to select a set of coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the device; the The transceiver module 920 is further configured to use the receiving coefficient of the receiving analog filter to respectively receive the second measurement signal from the first device on at least two different second time units, wherein each of the The second measurement signal is associated with an identifier; the processing module 910 is also used to determine the target identifier of the measurement signal; the transceiver module 920 is also used to send a first instruction to the first device, and the first instruction uses To indicate the target identifier, the target identifier is included in the identifiers respectively associated with the at least two second measurement signals.

In another example, the transceiver module 920 is further configured to receive a second instruction from the first device, and the second instruction is used to instruct the at least two first devices sent by the first device. The position of the first time unit in the first period corresponding to the measurement signal, and the position of the second time unit in the first period corresponding to the at least two second measurement signals sent respectively Position; the processing module 910 is further configured to determine the positions of the first time unit and the second time unit in the first period according to the second instruction.

In another example, when the processing module 910 is configured to select a set of coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the device, specifically use Yu: According to the signal quality corresponding to the at least two first measurement signals, a set of coefficients is selected from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the device.

In another example, the processing module 910 is further configured to select a set of coefficients from the at least two different sets of third coefficients as the transmission coefficients of the transmission analog filter of the device.

In another example, when the processing module 910 is configured to select a group of coefficients from the at least two different sets of third coefficients as the transmission coefficients of the transmission analog filter of the device, it is specifically configured to : Determining a set of the third coefficients associated with the first measurement signal with the strongest signal strength as the transmission coefficient.

In another example, when the processing module 910 is used to determine the target identifier of the measurement signal, it is specifically configured to: determine the target of the measurement signal according to the signal quality corresponding to the at least two second measurement signals. Logo.

The aforementioned processing module 910, storage module 930, and transceiver module 920 may be connected through a communication bus.

The storage module 930 may include one or more memories, and the memories may be devices for storing programs or data in one or more devices or circuits. The storage module 930 can store computer execution instructions of the method on the terminal, access gateway, AMF network element, and SMF network element side, so that the processing module 910 executes the terminal, access gateway, AMF network element, and SMF network element side in the foregoing embodiment. Methods. The storage module 930 may be a register, a cache, a RAM, etc., and the storage module 930 may be integrated with the processing module 910. The storage module 930 may be a ROM or another type of static storage device that can store static information and instructions, and the storage module 930 may be independent of the processing module 910.

The transceiver module 920 may be an input or output interface, pin or circuit, or the like.

FIG. 10 is a schematic block diagram of an apparatus 1000 for beam selection according to an embodiment of the present application. It should be understood that the apparatus 1000 can execute each step performed by the first device in the methods of FIG. 4, FIG. 5, FIG. 7a, and FIG. The device 1000 includes a processor 1010, a transceiver 1020, and optionally, a memory 1030. The processor 1010 and the memory 1030 are electrically coupled.

For example, the memory 1030 is configured to store a computer program; the processor 1010 may be configured to call a computer program or instruction stored in the memory to execute the above-mentioned beam selection method through the transceiver 1020.

The processing module 810 in FIG. 8 may be implemented by the processor 1010, the transceiver module 820 may be implemented by the transceiver 1020, and the storage module 830 may be implemented by the memory 1030.

In an example, the transceiver 1020 may be used to send the first coefficients of the analog filter to the second device in at least two different first time units in the first period. A measurement signal; and in the first period, at least two different sets of second coefficients of the transmitting analog filter are used to respectively send second coefficients to the second device on at least two different second time units Measurement signal; wherein each of the second measurement signals is associated with an identifier, and is associated with a set of second coefficients used to send the second measurement signal in the sending analog filter; the at least two different first At least two of the one time unit is earlier than at least one of the at least two different second time units, and at least two of the at least two different second time units are later than the at least two At least one of the different first time units; and receiving a first indication from the second device, the first indication being used to indicate a target identifier, and the target identifier is included in the at least two second measurement signals In the respectively associated identifiers; the width of the beam corresponding to the set of first coefficients of the transmitting analog filter is greater than the width of the beam corresponding to any set of second coefficients. The processor 1010 may be configured to determine the sending coefficient of the sending analog filter of the device based on the target identifier.

In another example, the transceiver 1020 is further configured to send a second indication to the second device, and the second indication is used to indicate that the at least two first measurement signals sent by the apparatus are respectively The corresponding position of the first time unit in the first period, and the position of the second time unit in the first period corresponding to the at least two second measurement signals sent.

In another example, the processor 1010 is further configured to determine the sending coefficient of the sending analog filter as the receiving coefficient of the receiving analog filter of the device.

In an example, the memory 1030 may be used to store the first period, the first time unit, the second time unit, the transmission coefficient of the transmitting analog filter of the device 1000, and the receiving analog filter of the device 1000 Receiver coefficient.

FIG. 11 is a schematic block diagram of an apparatus 1100 for beam selection according to an embodiment of the present application. It should be understood that the apparatus 1100 can execute each step performed by the second device in the methods of FIG. 4, FIG. 5, FIG. 7a, and FIG. The device 1100 includes a processor 1110 and a transceiver 1120, and optionally, a memory 1130. The processor 1110 and the memory 1130 are electrically coupled.

For example, the memory 1130 is configured to store a computer program; the processor 1110 may be configured to call a computer program or instruction stored in the memory to execute the above-mentioned beam selection method through the transceiver 1120.

The processing module 910 in FIG. 9 may be implemented by the processor 1110, the transceiver module 920 may be implemented by the transceiver 1120, and the storage module 930 may be implemented by the memory 1130.

In an example, the transceiver 1120 is configured to use at least two different sets of third coefficients of the receiving analog filter to receive data from the first time unit on at least two different first time units in the first period. The first measurement signal of the device; the processor 1110 is configured to select a set of coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the device; the The transceiver 1120 is further configured to use the receiving coefficient of the receiving analog filter to respectively receive the second measurement signal from the first device on at least two different second time units, wherein each of the The second measurement signal is associated with an identifier; the processor 1110 is also used to determine the target identifier of the measurement signal; the transceiver 1120 is also used to send a first instruction to the first device, and the first instruction is used for To indicate the target identifier, the target identifier is included in the identifiers respectively associated with the at least two second measurement signals.

In another example, the transceiver 1120 is further configured to receive a second instruction from the first device, and the second instruction is used to instruct the at least two first devices sent by the first device. The position of the first time unit in the first period corresponding to the measurement signal, and the position of the second time unit in the first period corresponding to the at least two second measurement signals sent respectively Position; the processor 1110 is further configured to determine the positions of the first time unit and the second time unit in the first period according to the second instruction.

In another example, when the processor 1110 is configured to select a set of coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the device, specifically use Yu: According to the signal quality corresponding to the at least two first measurement signals, a set of coefficients is selected from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the device.

In another example, the processor 1110 is further configured to select a set of coefficients from the at least two different sets of third coefficients as the sending coefficients of the sending analog filter of the device.

In another example, when the processor 1110 is configured to select a set of coefficients from the at least two different sets of third coefficients as the transmission coefficients of the transmission analog filter of the device, it is specifically configured to : Determining a set of the third coefficients associated with the first measurement signal with the strongest signal strength as the transmission coefficient.

In another example, when the processor 1110 is used to determine the target identifier of the measurement signal, it is specifically configured to: determine the target of the measurement signal according to the signal quality corresponding to the at least two second measurement signals. Logo.

In another example, the memory 1130 may be used to store the first cycle, the first time unit, the second time unit, the transmission coefficient of the transmission simulation filter of the device 1100, and the reception simulation of the device 1100. The reception coefficient of the filter.

The aforementioned processor may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. The processor may further include a hardware chip or other general-purpose processors. The above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (generic array logic, GAL) and other programmable logic devices , Discrete gates or transistor logic devices, discrete hardware components, etc. or any combination thereof. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) And Direct Rambus RAM (DR RAM). It should be noted that the memories described in this application are intended to include, but are not limited to, these and any other suitable types of memories.

The embodiment of the present application also provides a computer storage medium storing a computer program, and when the computer program is executed by a computer, the computer can be used to execute the above beam selection method.

The embodiment of the present application also provides a computer program product containing instructions, which when running on a computer, enables the computer to execute the beam selection method provided above.

An embodiment of the present application also provides a beam selection system. The system includes: a network device and a terminal that execute the above beam selection method.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that instructions generated by the processor of the computer or other programmable data processing equipment can be used for generating instructions. It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operating steps are performed on the computer or other programmable equipment to produce computer-implemented processing, so that the computer or other programmable equipment is executed The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. In this way, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

A method for determining filter coefficients, characterized in that the method includes:

In the first period, the first device uses a set of first coefficients of the sending analog filter to respectively send the first measurement signal to the second device on at least two different first time units;

In the first period, the first device uses at least two different sets of second coefficients of the sending analog filter to send second coefficients to the second device on at least two different second time units. Measurement signal; wherein each of the second measurement signals is associated with an identifier, and is associated with a set of second coefficients used to send the second measurement signal in the sending analog filter; the at least two different first At least two of the one time unit is earlier than at least one of the at least two different second time units, and at least two of the at least two different second time units are later than the at least two At least one of the different first time units;

The first device receives a first indication from the second device, the first indication is used to indicate a target identifier, and the target identifier is included in the identifiers respectively associated with the at least two second measurement signals ；

Determining, by the first device, the transmission coefficient of the transmission analog filter of the first device based on the target identifier;

Wherein, the width of the beam corresponding to the set of first coefficients of the transmitting analog filter is greater than the width of the beam corresponding to any set of second coefficients.
The method of claim 1, further comprising:

The first device sends a second instruction to the second device, where the second instruction is used to indicate that the first time unit corresponding to the at least two first measurement signals sent by the first device is The position in the first period, and the position in the first period of the second time unit corresponding to the at least two second measurement signals sent respectively.
The method according to claim 1 or 2, wherein in the first period, any one of the first time units is earlier than any one of the second time units; or,

In the first period, there is one second time unit between two adjacent first time units.
The method according to any one of claims 1-3, further comprising:

The first device determines the transmit coefficient of the transmit analog filter as the receive coefficient of the receive analog filter of the first device.
The method according to any one of claims 1 to 4, wherein the first period is a transmission period of a measurement signal configured in the first device.
A method for determining a filter, characterized in that the method includes:

In the first period, the second device uses at least two different sets of third coefficients of the receiving analog filter to respectively receive the first measurement signal from the first device on at least two different first time units;

Selecting, by the second device, a set of coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the second device;

The second device uses the reception coefficient of the reception analog filter to receive the second measurement signal from the first device on at least two different second time units, wherein each of the second measurement signals is An identification is associated with the measurement signal;

The second device determines the target identifier of the measurement signal, and sends a first instruction to the first device, where the first instruction is used to indicate the target identifier, and the target identifier is included in the at least two second The measurement signals are respectively associated with the identifiers.
The method according to claim 6, characterized in that, before the second device receives the first measurement signal and the second measurement signal in the first period, the method further comprises:

The second device receives a second instruction from the first device, where the second instruction is used to indicate the first time unit corresponding to the at least two first measurement signals sent by the first device, respectively A position in the first period, and a position in the first period of the second time unit corresponding to the at least two second measurement signals sent;

The second device determines the positions of the first time unit and the second time unit in the first period according to the second instruction.
The method according to claim 6 or 7, wherein, in the first period, any one of the first time units is earlier than any one of the second time units; or,

In the first period, there is one second time unit between two adjacent first time units.
The method according to any one of claims 6-8, wherein the second device selects a set of coefficients from the at least two different sets of third coefficients as the receiving simulation of the second device The reception coefficient of the filter includes:

The second device selects a set of coefficients from the at least two different sets of third coefficients according to the signal quality corresponding to the at least two first measurement signals, as the receiving analog filter of the second device The acceptance coefficient.
The method according to any one of claims 6-9, further comprising:

The second device selects a set of coefficients from the at least two different sets of third coefficients as the sending coefficients of the sending analog filter of the second device.
The method according to claim 10, wherein the second device selects a set of coefficients from the at least two different sets of third coefficients as the transmission coefficients of the transmission analog filter of the second device, include:

The second device determines a set of the third coefficients associated with the first measurement signal with the strongest signal strength as the transmission coefficient.
The method according to any one of claims 6-11, wherein the second device determining the target identifier of the measurement signal comprises:

The second device determines the target identifier of the measurement signal according to the signal qualities respectively corresponding to the at least two second measurement signals.
A communication device, characterized in that the device includes:

The transceiver module is configured to send the first measurement signal to the second device on at least two different first time units using a set of first coefficients of the sending analog filter in the first period; and In a cycle, at least two different sets of second coefficients of the sending analog filter are used to send second measurement signals to the second device on at least two different second time units; wherein, each of the first Two measurement signals are associated with an identifier, and are associated with a set of second coefficients in the transmitting analog filter for transmitting the second measurement signal; at least two of the at least two different first time units are earlier than At least one of the at least two different second time units, and at least two of the at least two different second time units are later than at least one of the at least two different first time units And receiving a first indication from the second device, the first indication being used to indicate a target identifier, the target identifier being included in the identifiers respectively associated with the at least two second measurement signals;

A processing module, configured to determine the transmission coefficient of the transmission analog filter of the device based on the target identifier;

Wherein, the width of the beam corresponding to the set of first coefficients of the transmitting analog filter is greater than the width of the beam corresponding to any set of second coefficients.
The device according to claim 13, wherein the transceiver module is further configured to send a second instruction to the second device, and the second instruction is used to instruct the at least two devices sent by the device The first measurement signal corresponds to the position of the first time unit in the first period, and the second time unit corresponding to the at least two second measurement signals sent is in the first period. Location within.
The device according to claim 13 or 14, wherein in the first period, any one of the first time units is earlier than any one of the second time units; or, in the first period Inside, there is one second time unit between two adjacent first time units.
15. The device according to any one of claims 13-15, wherein the processing module is further configured to determine the transmit coefficient of the transmit analog filter as the receive coefficient of the receive analog filter of the device .
The device according to any one of claims 13-16, wherein the first period is a transmission period of a measurement signal configured in the device.
A communication device, characterized in that the device includes:

A transceiver module, configured to use at least two different sets of third coefficients of the receiving analog filter to respectively receive the first measurement signal from the first device on at least two different first time units in the first period;

A processing module, configured to select a set of coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the device;

The transceiver module is further configured to use the receiving coefficient of the receiving analog filter to respectively receive the second measurement signal from the first device on at least two different second time units, wherein each The second measurement signal is associated with an identifier;

The processing module is also used to determine the target identifier of the measurement signal;

The transceiver module is further configured to send a first instruction to the first device, where the first instruction is used to indicate the target identifier, and the target identifier includes information associated with the at least two second measurement signals. The logo.
The apparatus according to claim 18, wherein the transceiver module is further configured to receive a second indication from the first device, and the second indication is used to indicate the At least two first measurement signals correspond to the positions of the first time unit in the first period, and the second time units corresponding to the at least two second measurement signals sent are in the first period. Position in the first cycle;

The processing module is further configured to determine the positions of the first time unit and the second time unit in the first period according to the second instruction.
The device according to claim 18 or 19, wherein in the first period, any one of the first time units is earlier than any one of the second time units; or, in the first period Inside, there is one second time unit between two adjacent first time units.
The device according to any one of claims 18-20, wherein the processing module is configured to select a set of coefficients from the at least two different sets of third coefficients as the receiving device of the device. When simulating the receiving coefficient of the filter, it is specifically used for:

According to the signal quality respectively corresponding to the at least two first measurement signals, a set of coefficients is selected from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the device.
22. The device according to any one of claims 18-21, wherein the processing module is further configured to select a set of coefficients from the at least two different sets of third coefficients as the sending simulation of the device The transmit coefficient of the filter.
The device according to claim 22, wherein the processing module is configured to select a set of coefficients from the at least two different sets of third coefficients as the transmission coefficients of the transmission analog filter of the device When, specifically used for:

A set of the third coefficients associated with the first measurement signal with the strongest signal strength is determined as the transmission coefficient.
The device according to any one of claims 18-23, wherein the processing module is specifically used for determining the target identifier of the measurement signal:

According to the signal quality corresponding to the at least two second measurement signals, the target identifier of the measurement signal is determined.
A computer-readable storage medium, characterized in that computer-readable instructions are stored in the computer storage medium, and when the computer reads and executes the computer-readable instructions, the computer executes any one of claims 1-5 The method of item or the method of any one of claims 6-12.
A chip system, characterized by comprising: a processor and a memory;

The memory is used to store computer program instructions;

The processor is configured to execute part or all of the computer program instructions in the memory, and when the part or all of the computer program instructions are executed, it is configured to implement the method or any one of claims 1-5. The method of any one of claims 6-12.