Arrival direction estimation method, terminal and network side equipment

Abstract

This application discloses a method for estimating direction of arrival (ROA), a terminal, and a network-side device, belonging to the field of wireless communication technology. The ROA estimation method of this application includes: a BSC terminal measuring a measurement signal transmitted by a network-side device across multiple measurement ranges; obtaining N sets of sum-difference beams based on the measurement results obtained from each measurement range; further, selecting the set with the best signal energy and / or the best signal quality from the N sets of sum-difference beams as the target sum-difference beam for estimating the ROA of the measurement signal. This application also provides a method for obtaining ROA, including: a BSC terminal measuring multiple measurement signals transmitted by a network-side device; the BSC terminal determining the measurement signal with the best signal energy and / or the best signal quality as a first signal based on the multiple measurement signals; and the BSC terminal obtaining the target ROA corresponding to the measurement parameters of the first signal based on the mapping relationship between measurement parameters and ROA.

Description

Technical Field

[0001] This application belongs to the field of wireless communication technology, specifically relating to a method for estimating the direction of arrival, a terminal, and a network-side device. Background Technology

[0002] Backscatter (BSC), as a low-power communication technology, can solve the high energy consumption problem in traditional communication by using low-power micro-hardware.

[0003] Figure 1a This is a BSC communication architecture in related technologies, such as Figure 1a As shown, the network-side equipment, acting as the BSC receiver, is both a radio frequency source and a transmitter of downlink data to the BSC terminal, as well as a receiver of uplink data to the BSC terminal. The network-side equipment communicates directly with the BSC terminal. This deployment architecture places high demands on the receiving sensitivity of both the base station and the BSC terminal.

[0004] In BSC communication, the BSC terminal modulates the received carrier wave by controlling the switching of load impedance or using transmission lines to change the amplitude and phase of the backscattered signal, enabling the BSC to receive and decode the backscattered signal. In specific applications, the BSC terminal can configure a reflector array to reflect the incoming signal from the network-side device 180 degrees, forming a backscattered signal. However, achieving signal reflection via a reflector array requires accurate estimation of the incoming signal direction; therefore, accurately determining the incoming signal direction is a technical problem that needs to be solved in related technologies. Summary of the Invention

[0005] This application provides a method for estimating the direction of arrival, a terminal, and a network-side device, which can accurately obtain the direction of arrival.

[0006] In a first aspect, a method for estimating the direction of arrival (ROA) of a signal is provided, comprising: a BSC terminal measuring a measurement signal transmitted by a network-side device in multiple measurement ranges; the BSC terminal acquiring N sets of sum and difference beams based on the measurement results obtained from each of the measurement ranges, wherein each measurement range corresponds to a set of sum and difference beams, and each set of sum and difference beams includes a sum beam and a difference beam, where N is the number of measurement ranges and N is an integer greater than 1; the BSC terminal estimating the ROA of the measurement signal based on a target sum and difference beam set, wherein the target sum and difference beam set is the set of sum and difference beams with the best signal energy and / or the best signal quality among the N sets of sum and difference beams.

[0007] Secondly, an approach direction estimation device is provided, comprising: a first measurement module for measuring a measurement signal transmitted by a network-side device in multiple measurement ranges; a first acquisition module for acquiring N sets of sum and difference beams based on the measurement results obtained from each of the measurement ranges, wherein one measurement range corresponds to one set of sum and difference beams, and one set of sum and difference beams includes one sum beam and one difference beam, N is the number of measurement ranges, and N is an integer greater than 1; and an estimation module for estimating the approach direction of the measurement signal based on a target sum and difference beam set, wherein the target sum and difference beam set is the set of sum and difference beams with the best signal energy and / or the best signal quality among the N sets of sum and difference beams.

[0008] Thirdly, a method for obtaining the direction of arrival is provided, comprising: a BSC terminal measuring multiple measurement signals sent by a network-side device; the BSC terminal obtaining measurement parameters of a first signal based on the measurement results, wherein the first signal is the measurement signal with the best signal energy and / or the best signal quality among the multiple measurement signals; and the BSC terminal obtaining the target direction of arrival corresponding to the measurement parameters of the first signal.

[0009] Fourthly, an incoming wave direction acquisition device is provided, comprising: a second measurement module for measuring multiple measurement signals sent by a network-side device; a second acquisition module for acquiring measurement parameters of a first signal based on the measurement results, wherein the first signal is the measurement signal with the best signal energy and / or the best signal quality among the multiple measurement signals; and a third acquisition module for acquiring the target incoming wave direction corresponding to the measurement parameters of the first signal.

[0010] Fifthly, a method for transmitting measurement signals is provided, comprising: a network-side device configuring a mapping relationship between measurement parameters and the direction of arrival of a wave according to target parameters, wherein the target parameters include at least one of the following: the number of BSC terminals communicating with the network-side device, and the communication distance between the network-side device and the BSC terminals; the network-side device transmitting multiple measurement signals according to the mapping relationship.

[0011] In a sixth aspect, a measurement signal transmitting device is provided, characterized in that it includes: a configuration module, configured to configure a mapping relationship between measurement parameters and the direction of arrival of a wave according to target parameters, wherein the target parameters include at least one of the following: the number of BSC terminals communicating with the network-side device, and the communication distance between the network-side device and the BSC terminals; and a transmitting module, configured to transmit multiple measurement signals according to the mapping relationship.

[0012] In a seventh aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect, or implementing the steps of the method as described in the third aspect.

[0013] Eighthly, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to implement the steps of the method described in the first aspect, or the steps of the method described in the third aspect, and the communication interface is configured to communicate with an external device.

[0014] In a ninth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the fifth aspect.

[0015] In a tenth aspect, a network-side device is provided, including a processor and a communication interface, wherein the processor is used to implement the steps of the method described in the fifth aspect, and the communication interface is used to communicate with an external device.

[0016] Eleventhly, a direction of arrival estimation system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method described in the third aspect, and the network-side device can be used to perform the steps of the method described in the fifth aspect.

[0017] In a twelfth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fifth aspect.

[0018] In a thirteenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fifth aspect.

[0019] In a fourteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or the steps of the method as described in the third aspect, or the steps of the method as described in the fifth aspect.

[0020] The arrival direction estimation scheme provided in this application involves a BSC terminal measuring a measurement signal sent by a network-side device across multiple measurement ranges. Based on the measurement results from each range, multiple sets of sum and difference beams are obtained. The sum and difference beam with the best signal energy and / or signal quality is selected for arrival direction estimation, thereby increasing the estimation range and improving the estimation accuracy. Furthermore, the arrival direction acquisition scheme provided in this application allows the network-side device to configure the mapping relationship between the BSC terminal's measurement parameters and the arrival direction. The BSC terminal can accurately acquire the arrival direction by measuring multiple measurement signals sent by the network-side device, and this also reduces system power consumption caused by beam alignment. Attached Figure Description

[0021] Figure 1a This diagram illustrates an architecture of a wireless communication system to which embodiments of this application may be applied;

[0022] Figure 1b This diagram illustrates a process for obtaining the direction of arrival of a wave in an embodiment of this application.

[0023] Figure 2 This illustration shows a flowchart of an embodiment of the wave direction estimation method provided in this application.

[0024] Figure 3a This diagram illustrates a load connection method according to an embodiment of this application.

[0025] Figure 3b This diagram illustrates a load connection method according to an embodiment of this application.

[0026] Figure 3c This diagram illustrates a load connection method according to an embodiment of this application.

[0027] Figure 4 This illustration shows another flowchart of the wave direction estimation method provided in an embodiment of this application;

[0028] Figure 5 This illustration shows a schematic diagram of the connection between an antenna and a load impedance in an embodiment of this application.

[0029] Figure 6 This diagram illustrates the reflection of a signal in an embodiment of this application.

[0030] Figure 7 This illustration shows a reflection diagram of another signal in an embodiment of this application;

[0031] Figure 8 This illustration shows a flowchart of a measurement signal acquisition method provided in an embodiment of this application.

[0032] Figure 9 This illustration shows a scenario of transmitting and receiving a measurement signal according to an embodiment of this application;

[0033] Figure 10 This illustration shows a flowchart of a method for transmitting measurement signals according to an embodiment of this application;

[0034] Figure 11 This illustration shows a structural schematic diagram of an incoming wave direction estimation device provided in an embodiment of this application;

[0035] Figure 12 This illustration shows a structural schematic diagram of an incoming wave direction acquisition device provided in an embodiment of this application;

[0036] Figure 13 This diagram illustrates a structural schematic of a measurement signal transmitting device provided in an embodiment of this application.

[0037] Figure 14 This illustration shows a structural diagram of a communication device provided in an embodiment of this application;

[0038] Figure 15 This illustration shows a hardware structure diagram of a terminal provided in an embodiment of this application;

[0039] Figure 16 This diagram illustrates the hardware structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0041] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used in the systems and radio technologies mentioned above, as well as in other systems and radio technologies. The following description describes a 6th Generation (6G) communication system for illustrative purposes, and 6G terminology is used in most of the following description; however, these technologies can also be applied to applications beyond 6G system applications.

[0043] Figure 1aThis diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a BSC terminal 11 and a network-side device 12. The BSC terminal 11 can also be referred to as a BSC terminal device or a BSC user equipment (UE). The BSC terminal 11 can be a backscattering device, including but not limited to wearable devices. Wearable devices include smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. The BSC terminal modulates the information to be transmitted onto the signal source carrier through the BSC's modulation module and backscatters the modulated data back to the network-side device. It should be noted that the specific type of the BSC terminal 11 is not limited in this embodiment. Network-side device 12 may include access network device and / or core network device. Network-side device 12 can be used as BSC receiver, which is both a radio frequency source and a downlink data transmitter and uplink data receiver of BSC terminal 11. Access network device 12 may also be called radio access network device, radio access network (RAN), radio access network function or radio access network unit. Access network device 12 may include base stations, WLAN access points, or WiFi nodes, etc. The base station may be referred to as Node B, Evolved Node B (eNB), access point, Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home B node, Home Evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example for introduction, and the specific type of base station is not limited.

[0044] The arrival direction estimation scheme provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings and through some examples and application scenarios.

[0045] In practical applications, the network-side device may send one measurement signal to the BSC terminal, or it may send multiple measurement signals to the BSC terminal. In the embodiments of this application, for example... Figure 1bAs shown, the BSC terminal can employ different schemes to obtain the direction of arrival (ROA) for scenarios where the network-side device sends one measurement signal or multiple measurement signals, in order to reflect the signal in the reverse direction. For example, in the scenario where the network-side device sends one measurement signal, the technical solution described in method 200 below is used to estimate the ROA; in the scenario where the network-side device sends multiple measurement signals, the technical solution described in method 800 below is used to obtain the ROA. In specific applications, the BSC terminal can determine whether the current scenario is one or multiple measurement signals from the network-side device based on the indication information sent by the network-side device. Alternatively, the BSC terminal can also determine whether the current scenario is one or multiple measurement signals from the network-side device based on the number of beam directions of the measurement signals detected by the network-side device within a certain time period. For example, if the BSC terminal detects only one beam direction measurement signal within 30ms, it determines that the scenario is one ROA; if the BSC terminal detects multiple beam direction measurement signals within 30ms, it determines that the scenario is multiple measurement signals from the network-side device. The following sections describe the methods for obtaining the direction of arrival for the BSC terminal in these two scenarios.

[0046] Figure 2 This diagram illustrates a flowchart of an incoming wave direction estimation method provided in an embodiment of this application. This method 200 can be executed by a BSC terminal. In other words, the method can be executed by software or hardware installed on the BSC terminal. Figure 2 As shown, the method may include the following steps.

[0047] S210, the BSC terminal measures a measurement signal sent by a network-side device across multiple measurement ranges.

[0048] In this embodiment, the network-side device sends a measurement signal to the BSC terminal; that is, the network-side device, acting as a BSCReceiver, sends a single measurement signal to the BSC UE. This network-side device can be a base station. The beam spread angle corresponding to this single measurement signal is controlled by the network-side device and can be a wide beam or a narrow beam. The network-side device configures a shaped signal set for beam measurement, which can be a sequence, preamble, reference signal, synchronization signal block (SSB), etc. The network-side device can use periodic or aperiodic transmission methods when transmitting the beam. For example, if the approximate orientation of the BSC UE is known, the network-side device can transmit the beam aperiodically, transmitting the beam only in a limited number of directions to reduce system overhead and the measurement complexity of the BSC UE. Under high system load, the beam is transmitted periodically.

[0049] When estimating the direction of arrival (AoA) using a sum-difference beamforming method based on measurement parameters, measuring within only one measurement range (e.g., within θ) is effective for AoA estimation. However, beyond this range (-θ / 2, θ / 2), the values ​​of the measurement parameters become very small, which is detrimental to sum-difference beamforming. Therefore, in this embodiment, the BSC terminal measures a single measurement signal transmitted by the network-side device across multiple measurement ranges.

[0050] In one possible implementation, in S210, for each measurement range, the BSC terminal can use a load impedance connection method corresponding to that measurement range to measure the measurement signal, wherein the load impedance connection methods corresponding to different measurement ranges are not exactly the same. That is, in this possible implementation, the BSC terminal uses a load impedance connection method to measure the measurement signal within different measurement ranges.

[0051] In one possible implementation, in S210, the BSC terminal can measure the measurement signal within different measurement ranges at different times. For example, when the BSC terminal has a small number of antennas and is only a single panel, the BSC terminal can use a time-division multiplexing method to measure the measurement signal within different measurement ranges.

[0052] In another possible implementation, in S210, the BSC terminal can also simultaneously measure the measurement signals of different measurement ranges through different panels of the BSC terminal. For example, the measurement signal of θ1 is measured through panel 1, and the measurement signal of θ2 is measured through panel 2.

[0053] In practical applications, different implementation types can be categorized according to the number of panels in the BSC terminal and the required measurement range. As shown in Table 1, Type I is for single-panel terminals measuring only one range, simultaneously measuring the sum and difference beams of range θ1 at time T; Type II is for single-panel terminals measuring multiple ranges, implemented by measuring the sum and difference beams of range θ1 at time T1, measuring the sum and difference beams of range θ2 at time T2, and so on; Type III is for multiple-panel terminals measuring multiple ranges, implemented by panel 1 measuring the sum and difference beams of range θ1 at time T, panel 2 simultaneously measuring the sum and difference beams of range θ2, and so on.

[0054] Table 1. Classification of Sum and Difference Beam Measurement Types

[0055]

[0056] S212, the BSC terminal obtains N sets of sum and difference beams based on the measurement results obtained from each of the measurement ranges, wherein one measurement range corresponds to one set of sum and difference beams, and one set of sum and difference beams includes one sum beam and one difference beam, N is the number of measurement ranges, and N is an integer greater than 1.

[0057] It should be noted that although N is limited to an integer greater than 1 as described above, it is not limited to this. In practical applications, N can also be equal to 1. For example, when the BSC terminal uses the above Type I implementation method for measurement, N is equal to 1.

[0058] In this embodiment of the application, the BSC terminal measures the measurement signal in N measurement ranges, and a set of measurement parameters is obtained for each measurement range. Through the set of measurement parameters, a set of sum and difference beams can be obtained.

[0059] For example, taking the Reference Signal Received Power (RSRP) as a measurement parameter, if the BSC terminal selects the Type I implementation, three RSRP measurements are required. Figures 3a to 3c As shown, the measured parameters can be the RSRP1 (i.e., the beam) obtained by adding the two antennas in phase after connecting them to the same type of load, or the RSRP obtained by connecting the other two antennas to different types of loads. 21 and RSRP 22 Where, the difference beam RSRP2 = RSRP 21 -RSRP 22 Measure RSRP 21 and RSRP 22At this time, RSSI can be measured using two identical antennas at different times. Specifically, at time T1, one antenna is connected to a resistor and the other to an inductor, and the RSSI can be measured. 21 The opposite is true at time T2, where RSSI is measured. 22 Alternatively, measurements can be taken simultaneously using four antennas at the same time. For example, at time T, the first antenna is connected to a resistor, the second antenna is connected to an inductor, and the RSSI is measured. 21 The third antenna is connected to an inductor, and the fourth antenna is connected to a resistor. The RSSI was measured. 22 .

[0060] If the BSC terminal selects the Type II implementation, since it only has a single panel, it needs to measure the signal in two θ ranges at different times. At time T1, the BSC terminal measures the signal of the two beams within the θ1 range to obtain the measurement parameter RSRP. 11 and RSRP 21 Then, at time T2, the load impedance is switched to adjust the range of the receiving beam to θ2. The BSC terminal measures the signals of the two beams within this range, obtaining two additional measurement parameters, RSRP. 12 and RSRP 22 .

[0061] If the BSC terminal selects the Type III implementation, since it has multiple panels, it can measure signals in two θ ranges simultaneously. This means multiple sets of sum and difference beams can be constructed simultaneously using different panels, with each set corresponding to a different measurement range. For example, at time T, the BSC terminal measures the signals of two beams within the θ1 range of the receiving beam using panel 1, obtaining the measurement parameter RSRP. 11 and RSRP 21 And by measuring the signals of the two beams within the θ2 range of the receiving beam through panel 2, two additional measurement parameters RSRP are obtained. 12 and RSRP 22 The load impedances connected to the measurement parameters corresponding to the sum beam and the difference beam are different; the load impedance connection methods for each set of sum and difference beams are also different.

[0062] S214, the BSC terminal estimates the direction of arrival of the measurement signal based on the target sum-difference beam group, wherein the target sum-difference beam group is the sum-difference beam group with the best signal energy and / or the best signal quality among the N sum-difference beam groups.

[0063] In the embodiments of this application, the BSC terminal determines the final sum and difference beams based on the criterion of the best signal energy and / or quality in different measurement ranges, and performs AoA estimation for the BSC UE.

[0064] In this embodiment, a method for estimating the direction of arrival based on measurement parameters can be used. For example, taking the Received Signal Strength Indication (RSSI) as an example, consider two beams: one is the sum beam, where the received signal strength (RSSI1) is measured by adding the two antennas in phase after connecting resistors to their ends; the other is the difference beam (RSSI1). 21 -RSSI 22 That is, of the two antennas, at time T1, one is connected to a resistor and the other is connected to an inductor, and the RSSI is measured. 21 The opposite is true at time T2, where RSSI is measured. 22 The specific principle of incoming wave direction estimation is described below.

[0065] Assume the signal received by the first antenna is s1, and the signal received by the second antenna is s2:

[0066] s1=Asin(wt) (1)

[0067] s2=Asin(wt+φ) (2)

[0068] Where A represents the signal amplitude and Φ represents the phase shift. The sum and difference beams can be represented as follows:

[0069]

[0070]

[0071] Among them, RSSI1 can measure the envelope term in the beam. RSSI 21 -RSSI 22 The envelope term in the difference beam can be measured. By comparing the sum and difference beams, we can obtain:

[0072]

[0073] Therefore, the AoA of the BSC terminal wave can be obtained through the above formula.

[0074] In one possible implementation of the embodiments of this application, such as Figure 4 As shown, after S214, the method may further include the following steps.

[0075] S216, BSC UE modulates the information bits to be transmitted.

[0076] BSC terminals can implement information bit modulation through the connection between the antenna and the load impedance, for example, in Figure 5In this case, assuming the BSC terminal has 2 antennas and 6 load impedances (Γ1~Γ6), the state (on / off) of the switch connected to each antenna can be controlled by the controller.

[0077] By selecting different impedance connection methods, the BSC UE antenna can achieve the modulation function of the signal reflected to the network-side equipment. Specific connection methods include, but are not limited to:

[0078] 1) Randomly determine the impedance to which each antenna is connected. Sending "0" represents a fully absorbed state with no connection, and sending "1" randomly selects one of the six Γ1 to Γ6. This connection method has a high degree of randomness, and the base station may receive a very weak pilot signal, affecting subsequent communication. However, this method can save power consumption and reduce latency.

[0079] 2) By traversal: If we consider one antenna connected to one load impedance, then transmitting "0" represents the state of full absorption without connection. When transmitting "1", we can traverse Γ1 to Γ6 and connect to the load impedance with the highest received power. If we consider two antennas connected to two different load impedances, then at the first moment, we select Γ1 and Γ2 to connect to the two antennas, at the second moment, we select Γ3 and Γ4 to connect to the two antennas, and so on.

[0080] The following are two different modulation methods used for reflected signals:

[0081] (1) If the pilot sequence is transmitted using On-Off Keying (OOK) or Binary Phase Shift Keying (BPSK), only one antenna and two load impedances are needed to complete the transmission. When considering OOK, the phases of the two load impedances must be set to be equal to the phases of the antenna impedances. Sending "0" indicates a fully absorbed state and sending "1" indicates a disconnected state. When considering BPSK, the phases of the two load impedances must be set to be 90° apart. Sending "0" indicates a connected state with a phase of 360° and sending "1" indicates a disconnected state with a phase of 0°.

[0082] (2) If 4-Aspect Shift Keying (4ASK) is considered to transmit pilot sequences, 2 antennas and 4 load impedances are required to complete the transmission. The phase of 2 of the load impedances must be set to be equal to the phase of the antenna impedance. The connection status of the two antennas and the load impedances is connected / disconnected. The BSC UE can send "00" (neither connected), "10" or "01" (one antenna connected) and "11" (both connected).

[0083] The above modulation process can be achieved not only through load impedance, but also through a combination of transmission line and load impedance, which is not limited in the specific embodiments of this application.

[0084] S218, the BSC UE reflects the information to be transmitted based on the estimated direction of arrival (AoA).

[0085] BSC terminals modulate signals through transmission line and / or load impedance, and can also achieve 180° signal reflection by switching transmission line and / or load impedance. Taking load impedance switching as an example, signal reflection is obtained from connections with ungrouped and grouped load impedances. The ungrouped case is as follows: Figure 6 As shown, the grouping is as follows Figure 7 As shown. Next, the generation principle of the precoding matrix is ​​introduced using the grouping case: In order to generate two beams in different directions at two different times (beam 1 and beam 2, T=2), the six load impedances are divided into two groups of three impedances each, thus generating a codebook with a dimension of 3×2. From Figure 7 It can be seen that Γ1~Γ3 is the first group, and Γ4~Γ6 is the second group. The two antennas can only connect to two load impedances in the corresponding group at the same time. That is to say, during the backscatter uplink transmission, the beams in different directions are transmitted sequentially.

[0086] Based on the principle of the reflective array, and using the estimated AoA, the load impedance that the antenna needs to connect to at time t1 can be determined. For example, the reflected signal y can be determined using the following formula (6). n :

[0087] y n =y0e -jπnsinθ (6)

[0088] Where θ is the direction of arrival, y0 is the bit information to be transmitted, j is an imaginary number, and n is the antenna index.

[0089] Assuming that selecting Γ1 and Γ5 satisfies the requirement of transmitting the reflected signal in the AoA direction, after the antenna selects Γ1 and Γ5 at time t1, the phase information corresponding to Γ1 and Γ5 is selected. After selecting Γ1 and Γ5, the phase change of the excitation current, based on the array response vector of the linear array, yields the first beam, as shown below. Figure 6 Beam 1 is shown in the image. Similarly, Figure 6 The diagram shows how beam 2 can be generated after assuming the selection of Γ2 and Γ6.

[0090] Subsequently, the network-side equipment receives the reflected signal from the BSC UE. During this process, the BSC UE's reflected beam (transmit beam) can be fixed, while the network-side equipment can change the receive beam, or use the transmit beam from the downlink transmission phase as the receive beam for this phase. The beam used to receive the reflected signal is determined by the network-side equipment.

[0091] The technical solution provided in this application addresses the scenario where a network-side device transmits a single signal. Based on the measurement parameter measurement principle, a sum-difference beam is constructed. By optimizing the multi-antenna transmission process, the BSC terminal expands the measurement range of the incoming wave signal and improves the accuracy of the incoming wave direction estimation.

[0092] The above embodiments provide a method for estimating the direction of arrival (ROA). Using this method, the BSC terminal can estimate the ROA in a scenario where a network-side device sends a measurement signal. Furthermore, this application also provides a technical solution for the BSC terminal to obtain the ROA in a scenario where a network-side device sends multiple measurement signals. The following describes the ROA acquisition method provided by this application.

[0093] Figure 8 This diagram illustrates a flowchart of a method for obtaining the direction of arrival provided in an embodiment of this application. This method 800 can be executed by a BSC terminal. In other words, the method can be executed by software or hardware installed on the BSC terminal. Figure 8 As shown, the method may include the following steps.

[0094] The S810 BSC terminal measures multiple measurement signals sent by network-side devices.

[0095] In this embodiment of the application, the network-side device sends M measurement signals, corresponding to M analog beams. A shaped signal set can be configured for each beam direction for beam measurement. The measurement signals can be sequences, preambles, reference signals, SSBs, etc.

[0096] In this system, M measurement signals are transmitted on different time and / or frequency domain resources, enabling network-side equipment to adjust the phase shifter configuration for each direction to achieve simulated beamforming. Simultaneously, the BSC UE can measure the M beamforming signals separately using N receiving beams to obtain the measurement parameters corresponding to each signal. The number of N receiving beams for the BSC UE depends on its hardware capabilities; when N is 1, it means the BSC UE measures the received signal using an omnidirectional beam. Figure 9 As shown, the network-side equipment has 3 analog beams, while the BSC UE has 1 beam. Each of the 3 analog beams of the network-side equipment is configured with a beamforming signal, which is transmitted in a polling manner.

[0097] Network-side equipment can employ periodic or aperiodic transmission methods when transmitting beams. For example, if the network-side equipment knows the approximate orientation of the BSC UE, it can transmit beams aperiodically, sending beams only in a limited number of directions to reduce system overhead and measurement complexity for the BSC UE. Under high system load, the network-side equipment can transmit beams periodically over a wider angular range, allowing more BSC UEs to receive the signal and thus improving beam measurement efficiency.

[0098] S812, the BSC terminal obtains the measurement parameters of the first signal based on the measurement results, wherein the first signal is the measurement signal with the best signal energy and / or the best signal quality among the plurality of measurement signals.

[0099] S814, the BSC terminal acquires the target arrival direction corresponding to the measurement parameters of the first signal.

[0100] In this embodiment of the application, the network-side device can configure the mapping relationship between the measurement parameters of the BSC terminal and the direction of arrival (AoA). The BSC terminal only needs to measure the incoming wave signal to obtain the AoA of the incoming wave.

[0101] In this embodiment, the transmit beam of the network-side device can change during the measurement process, while the BSC UE can maintain a constant receive beam for a certain period of time. The spread angle of the transmit beam is controlled by the network-side device and is transparent to the BSC UE. The BSC UE measures M signals using the receive beam to obtain a first reference signal, the signal energy and / or quality of which is the best among the M reference signals.

[0102] In one possible embodiment of this application, the BSC terminal may have configured a mapping relationship between measurement parameters and the direction of arrival. The BSC terminal can obtain the target direction of arrival through this mapping relationship. Therefore, in one possible implementation, S814 may include: the BSC terminal obtaining the target direction of arrival corresponding to the measurement parameters of the first signal according to the configured mapping relationship between measurement parameters and the direction of arrival. For example, the network-side device can jointly configure or indicate the mapping relationship through any one or more methods such as Radio Resource Control (RRC), Medium Access Control (MAC) Control Element (CE), or Downlink Control Information (DCI).

[0103] In the above possible implementations, the mapping relationship can be configured by the network-side device. Therefore, the method may further include: the BSC terminal receiving the mapping relationship configured or indicated by the network-side device. Of course, this is not the only possibility; the mapping relationship can also be a default agreement between the network-side device and the BSC terminal.

[0104] In another possible scenario, the BSC terminal may not have configured a mapping relationship between measurement parameters and the direction of arrival (ROA). The BSC terminal can report the measurement results to the network-side device, which can then query the mapping relationship and indicate the target ROA corresponding to the measurement parameters of the first signal to the BSC terminal. Therefore, in another possible implementation, the BSC terminal obtaining the target ROA corresponding to the measurement parameters of the first signal may include: the BSC terminal reporting the measurement parameters of the first signal and obtaining the target ROA indicated by the network-side device. In other words, in this possible implementation, the BSC terminal can report the measurement parameters of the first signal to the network-side device. After receiving the measurement parameters of the first signal, the network-side device, based on the configured mapping relationship, obtains the target ROA corresponding to the measurement parameters of the first signal and then sends the target ROA indication information to the BSC terminal. The BSC terminal can then obtain the target ROA based on this indication information.

[0105] Table 2 shows a mapping diagram of measurement parameters and AoA in one embodiment of this application. As shown in Table 2, the AoA estimation accuracy of the BSC UE depends on the number of RSRPs in the mapping table, which is related to the M signals transmitted by the network-side equipment. Furthermore, the signal processing capability of the BSC UE also determines the AoA estimation accuracy. For example, when the load impedance / number of transmission lines of the BSC UE is small, its ability to achieve phase / amplitude modulation is limited, and it may only reflect a wide beam within the AoA region. The gain peak point of the wide beam may deviate from the AoA angle. Therefore, in one possible implementation, the method may further include: the BSC terminal reporting its capability information, wherein the capability information is used by the network-side equipment to configure the mapping relationship. That is, the BSC UE reports its capabilities to the network, and the network, when configuring the mapping table, comprehensively considers factors such as the capabilities of the BSC UE to determine the M transmit beams of the network-side equipment.

[0106] Table 2. Mapping diagram between measurement parameters and AoA

[0107]

[0108] In one possible implementation, the mapping relationship establishes a one-to-one correspondence between the measured parameters and the AoA (Aspect of Arrival). The measured parameters corresponding to a given direction of arrival include the range of values ​​for each parameter. That is, the measured parameter may be a range; therefore, in practical applications, multiple measured parameters may correspond to a single AoA.

[0109] In this embodiment, the method for a BSC UE to measure multiple measurement signals transmitted by a network-side device can be communicated to the BSC UE via higher-layer signaling or indicated by dynamic parameters in control signaling. For example, in one possible implementation, the BSC terminal measuring multiple measurement signals transmitted by the network-side device may include: if the network-side device indicates that the transmission beams of the multiple measurement signals have the same direction, the BSC terminal uses different receiving beams to measure the multiple measurement signals. In other words, in this possible implementation, the network-side device may indicate to the BSC UE that its M measurement signals have the same transmission beam direction, and the BSC UE will measure the signals using different receiving beams.

[0110] In another possible implementation, the BSC terminal measuring multiple measurement signals transmitted by the network-side device may include: if the network-side device indicates that the directions of the transmission beams of the multiple measurement signals are not exactly the same, the BSC terminal uses the same receiving beam to measure the multiple measurement signals. That is, in this possible implementation, the network-side device may indicate to the BSC UE that its M measurement signals have different transmission beam directions, and the BSC UE may fix its receiving beam to determine the strongest signal energy and / or the best signal quality.

[0111] In one possible implementation, after S814, the method may also include the following S816 and S818.

[0112] S816, BSC UE modulates the information bits to be transmitted.

[0113] In this embodiment of the application, the information bit modulation of the BSC UE can be achieved by connecting the antenna and the load impedance. The specific implementation process is the same as the information bit modulation method described in S216 of method 200. The specific details can be found in the description in S216 of method 200, and will not be repeated here.

[0114] S818, the BSC terminal reflects the information bits to be transmitted according to the acquired direction of the target wave.

[0115] In this embodiment, the BSC UE reflects the signal back to the network-side device in the direction of the obtained AoA. The BSC UE achieves 180° signal reflection in the direction of AoA by adjusting the connection scheme of the load impedance and / or the transmission line connection scheme. The BSC UE can report the energy and / or quality of the M measured signals to the network-side device, or it can only select the optimal beam to report. The AoA corresponding to the optimal beam can be stored in the BSC UE and does not need to be reported to the network-side device. The implementation process of the BSC UE reflecting the information bits to be transmitted is consistent with the signal reflection method described in S218 of method 200. For details, please refer to the above description of S218, which will not be repeated here.

[0116] After S818, network-side equipment can receive reflected signals from BSC UEs.

[0117] The technical solution provided in this application embodiment allows for the configuration of a mapping table between BSC UE measurement parameters and AoA for scenarios where network-side devices transmit multiple signals. The BSC UE can obtain the AoA by measuring the incoming signal, thereby reducing system power consumption caused by beam alignment.

[0118] Figure 10 This diagram illustrates a flowchart of a method for transmitting measurement signals according to an embodiment of this application. Method 1000 is an execution step of the network-side device corresponding to method 800, and method 1000 is executed by the network-side device. In other words, the method can be executed by software or hardware installed on the network-side device. Figure 10 As shown, the method may include the following steps.

[0119] S1010, the network-side device configures the mapping relationship between measurement parameters and the direction of arrival of the wave according to the target parameters, wherein the target parameters include at least one of the following: the number of BSC terminals communicating with the network-side device, and the communication distance between the network-side device and the BSC terminals.

[0120] S1012, the network-side device sends multiple measurement signals according to the mapping relationship.

[0121] In this embodiment of the application, the accuracy of AoA estimation obtained by BSC UE can be determined according to the design rules of the mapping relationship. The network-side device can configure the mapping table according to the number of BSC UEs that need to communicate in real time and / or the communication distance.

[0122] In addition, the accuracy of AoA estimation also depends on the capabilities of the BSC UE, that is, the BSC UE hardware parameters determine whether signal reflection at a specific AoA angle can be achieved. Therefore, in one possible implementation, the target parameters also include the capabilities of the BSC terminal.

[0123] Based on the above mapping relationship, the network-side device can send M (M is an integer greater than 1) measurement signals, corresponding to M analog beams. A shaped signal set can be configured for beam measurement in each beam direction. This signal can be a sequence, preamble, reference signal, SSB, etc.

[0124] Among them, M measurement signals can be transmitted on different time and / or frequency domain resources so that network-side devices can adjust the configuration of phase shifters for each direction to achieve simulated beamforming.

[0125] In this embodiment, the network-side device can employ either periodic or aperiodic transmission methods when transmitting beams. If the network-side device knows the approximate orientation of the BSC UE, it can transmit beams aperiodically, sending beams only in a limited number of directions to reduce system overhead and measurement complexity for the BSC UE. Under high system load, the network-side device can transmit beams periodically over a wider angular range, allowing more BSC UEs to receive signals, thereby improving beam measurement efficiency.

[0126] In one possible implementation of this application, before the network-side device sends the plurality of measurement signals, the method further includes: the network-side device configuring or indicating the mapping relationship to the BSC terminal. This allows the BSC UE to obtain the direction of arrival simply by measuring the incoming signal.

[0127] In another possible implementation, the network-side device may not configure or indicate the mapping relationship to the BSC terminal. The BSC terminal can report the measurement parameters of the first signal after measuring M measurement signals. Therefore, in this possible implementation, after the network-side device sends the plurality of measurement signals, the method further includes: the network-side device receiving the measurement parameters of the first signal reported by the BSC terminal, wherein the first signal is the measurement signal with the best signal energy and / or the best signal quality obtained by the BSC terminal through measuring the plurality of measurement signals; the network-side device obtaining the target direction of arrival corresponding to the measurement parameters of the first signal according to the mapping relationship; and the network-side device indicating the target direction of arrival to the BSC terminal. This possible implementation can reduce the hardware requirements for the BSC terminal.

[0128] To enable the BSC terminal to determine how to measure multiple measurement signals, in one possible implementation, the method may further include:

[0129] The network-side device instructs the BSC terminal that the transmission beams of the multiple measurement signals are in the same direction. After receiving this instruction, the BSCUE can measure the multiple measurement signals using different receiving beams; or...

[0130] The network-side device indicates to the BSC terminal that the directions of the transmission beams of the multiple measurement signals are not exactly the same. After receiving this indication, the BSC UE can fix its receiving beam to measure the multiple measurement signals.

[0131] Through the technical solution provided in the embodiments of this application, the network-side device can use the mapping table between signal measurement parameters and AoA, and the BSC UE only needs to measure the incoming wave signal to obtain the direction of arrival, which reduces the system power consumption caused by beam alignment.

[0132] The wave direction estimation method provided in this application can be executed by a wave direction estimation device. This application uses the wave direction estimation device executing the wave direction estimation method as an example to illustrate the wave direction estimation device provided in this application.

[0133] Figure 11 This illustration shows a structural schematic diagram of an incoming wave direction estimation device provided in an embodiment of this application, such as... Figure 11 As shown, the device 1100 mainly includes: a first measurement module 1101, a first acquisition module 1102, and an estimation module 1103.

[0134] In this embodiment, the first measurement module 1101 is used to measure a measurement signal sent by a network-side device in multiple measurement ranges; the first acquisition module 1102 is used to acquire N sets of sum and difference beams based on the measurement results obtained from each of the measurement ranges, wherein one measurement range corresponds to one set of sum and difference beams, and one set of sum and difference beams includes one sum beam and one difference beam, N is the number of measurement ranges, and N is an integer greater than 1; the estimation module 1103 is used to estimate the direction of arrival of the measurement signal based on the target sum and difference beam group, wherein the target sum and difference beam group is the set of sum and difference beams with the best signal energy and / or the best signal quality among the N sets of sum and difference beams.

[0135] In one possible implementation, the first measurement module 1101 measures a measurement signal sent by the network-side device across multiple measurement ranges, including:

[0136] For each measurement range, the BSC terminal uses a load impedance connection method corresponding to that measurement range to measure the measurement signal. The load impedance connection methods for different measurement ranges are not exactly the same.

[0137] In one possible implementation, the first measurement module 1101 measures a measurement signal sent by the network-side device across multiple measurement ranges, including:

[0138] The measurement signal is measured at different times and within different measurement ranges; or,

[0139] The measurement signals of different measurement ranges are measured simultaneously through different panels of the BSC terminal.

[0140] The direction-of-arrival estimation device in this embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a BSC terminal, or other devices besides a terminal. For example, the BSC terminal can be, but is not limited to, the type of BSC terminal 11 listed above.

[0141] The wave direction estimation device provided in this application embodiment can achieve… Figures 2 to 7 The various processes implemented by the BSC terminal in the method embodiment achieve the same technical effect, and will not be described again here to avoid repetition.

[0142] Figure 12 This illustration shows a structural schematic diagram of an incoming wave direction acquisition device provided in an embodiment of this application, such as... Figure 12 As shown, the device 1200 mainly includes: a second measurement module 1201, a second acquisition module 1202 and a third acquisition module 1203.

[0143] In this embodiment, the second measurement module 1201 is used to measure multiple measurement signals sent by the network-side device; the second acquisition module 1202 is used to acquire the measurement parameters of the first signal according to the measurement results, wherein the first signal is the measurement signal with the best signal energy and / or the best signal quality among the multiple measurement signals; and the third acquisition module 1203 is used to acquire the target wave direction corresponding to the measurement parameters of the first signal.

[0144] In one possible implementation, the third acquisition module 1203 acquires the target arrival direction corresponding to the measurement parameters of the first signal, including:

[0145] Based on the configured mapping relationship between measurement parameters and the direction of arrival, the target direction of arrival corresponding to the measurement parameters of the first signal is obtained; or,

[0146] The measurement parameters of the first signal are reported, and the target arrival direction indicated by the network-side device corresponding to the measurement parameters of the first signal is obtained.

[0147] In one possible implementation, the apparatus further includes: a first receiving module for receiving the mapping relationship configured or indicated by the network-side device.

[0148] In one possible implementation, the apparatus further includes: a reporting module for reporting the capability information of the BSC terminal, wherein the capability information is used by the network-side device to configure the mapping relationship.

[0149] In one possible implementation, the second measurement module 1201 measures multiple measurement signals sent by the network-side device, including: when the network-side device indicates that the directions of the transmission beams of the multiple measurement signals are the same, measuring the multiple measurement signals using different receiving beams; or, when the directions of the transmission beams of the multiple measurement signals indicated by the network-side device are not completely the same, measuring the multiple measurement signals using the same receiving beam.

[0150] The incoming wave direction acquisition device in this application embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a BSC terminal, or other devices besides a terminal. For example, the BSC terminal can be, but is not limited to, the type of BSC terminal 11 listed above.

[0151] The wave direction acquisition device provided in this application embodiment can achieve... Figures 8 to 10 The various processes implemented by the BSC terminal in the method embodiment achieve the same technical effect, and will not be described again here to avoid repetition.

[0152] Figure 13 This illustration shows a structural schematic diagram of a measurement signal transmitting device provided in an embodiment of this application, such as... Figure 13 As shown, the device 1300 mainly includes a configuration module 1301 and a transmission module 1302.

[0153] In this embodiment of the application, the configuration module 1301 is used to configure the mapping relationship between measurement parameters and the direction of arrival of the wave according to the target parameters, wherein the target parameters include at least one of the following: the number of BSC terminals communicating with the network-side device, and the communication distance between the network-side device and the BSC terminals; the transmission module 1302 is used to transmit multiple measurement signals according to the mapping relationship.

[0154] In one possible implementation, the sending module 1302 is further configured to configure or indicate the mapping relationship to the BSC terminal.

[0155] In one possible implementation, the apparatus further includes: a second receiving module for receiving measurement parameters of a first signal reported by the BSC terminal, wherein the first signal is the measurement signal with the best signal energy and / or the best signal quality obtained by the BSC terminal through measuring the plurality of measurement signals; a fourth acquiring module for acquiring the target direction of arrival corresponding to the measurement parameters of the first signal according to the mapping relationship; and the transmitting module 1302 is further used to indicate the target direction of arrival to the BSC terminal.

[0156] In one possible implementation, the sending module 1302 is further configured to:

[0157] Instruct the BSC terminal that the transmission beams of the plurality of measurement signals are in the same direction; or,

[0158] The BSC terminal is instructed that the directions of the transmission beams of the multiple measurement signals are not exactly the same.

[0159] The measuring signal transmitting device in this application embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. This electronic device can be a network-side device, and can be various implementations of the network-side device 12 described above; this application embodiment does not specifically limit its implementation.

[0160] The measurement signal transmitting device provided in this application embodiment can achieve Figures 8 to 10 The various processes implemented by the network-side device in the method embodiment achieve the same technical effect, and will not be described again here to avoid repetition.

[0161] Optional, such as Figure 14 As shown, this application embodiment also provides a communication device 1400, including a processor 1401 and a memory 1402. The memory 1402 stores programs or instructions that can run on the processor 1401. For example, when the communication device 1400 is a terminal, when the program or instructions are executed by the processor 1401, they implement the various steps of the above-described wave direction estimation method embodiment, or implement the various steps of the above-described wave direction acquisition method embodiment, and achieve the same technical effect. When the communication device 1400 is a network-side device, when the program or instructions are executed by the processor 1401, they implement the various steps of the above-described measurement signal transmission method embodiment, and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0162] This application also provides a BSC terminal, including a processor and a communication interface. The processor is used to implement the various steps of the above-described wave direction estimation method embodiment, or to implement the various steps of the above-described wave direction acquisition method embodiment. The communication interface is used to communicate with external devices. This terminal embodiment corresponds to the above-described BSC terminal-side method embodiment. All implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 15 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0163] The terminal 1500 includes, but is not limited to, at least some of the following components: radio frequency unit 1501, network module 1502, audio output unit 1503, input unit 1504, sensor 1505, display unit 1506, user input unit 1507, interface unit 1508, memory 1509, and processor 1510.

[0164] Those skilled in the art will understand that the terminal 1500 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1510 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 15 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0165] It should be understood that, in this embodiment, the input unit 1504 may include a graphics processing unit (GPU) 15041 and a microphone 15042. The GPU 15041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1506 may include a display panel 15061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1507 includes a touch panel 15071 and at least one of other input devices 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0166] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1501 can transmit it to the processor 1510 for processing; in addition, the radio frequency unit 1501 can send uplink data to the network-side device. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0167] The memory 1509 can be used to store software programs or instructions, as well as various data. The memory 1509 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1509 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1509 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0168] Processor 1510 may include one or more processing units; optionally, processor 1510 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1510.

[0169] The processor 1510 is used to measure multiple measurement signals sent by network-side devices; based on the measurement results, to obtain measurement parameters of a first signal, wherein the first signal is the measurement signal with the best signal energy and / or the best signal quality among the multiple measurement signals; and to obtain the target direction of arrival corresponding to the measurement parameters of the first signal.

[0170] This application also provides a network-side device, including a processor and a communication interface. The processor is used to implement the various steps of the above-described method embodiment for transmitting measurement signals, and the communication interface is used to communicate with external devices. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0171] Specifically, embodiments of this application also provide a network-side device. For example... Figure 16 As shown, the network-side device 1600 includes: an antenna 1601, a radio frequency (RF) device 1602, a baseband device 1603, a processor 1604, and a memory 1605. The antenna 1601 is connected to the RF device 1602. In the uplink direction, the RF device 1602 receives information through the antenna 1601 and sends the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes the information to be transmitted and sends it to the RF device 1602. The RF device 1602 processes the received information and then transmits it through the antenna 1601.

[0172] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1603, which includes a baseband processor.

[0173] Baseband device 1603 may include, for example, at least one baseband board on which multiple chips are disposed, such as Figure 16 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1605 via a bus interface to call the program in the memory 1605 and execute the network device operation shown in the above method embodiment.

[0174] The network-side device may also include a network interface 1606, such as a common public radio interface (CPRI).

[0175] Specifically, the network-side device 1600 of this embodiment further includes: instructions or programs stored in memory 1605 and executable on processor 1604, wherein processor 1604 calls the instructions or programs in memory 1605 to execute. Figure 13The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0176] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various steps of the above-described wave direction estimation method embodiment, or the various steps of the above-described wave direction acquisition method embodiment, or the various steps of the above-described measurement signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0177] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0178] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described wave direction estimation method embodiment, or to implement the various processes of the above-described wave direction acquisition method embodiment, or to implement the various processes of the above-described measurement signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0179] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0180] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described wave direction estimation method embodiment, or the various processes of the above-described wave direction acquisition method embodiment, or the various processes of the above-described measurement signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0181] This application embodiment also provides an incoming wave direction estimation system, including: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the incoming wave direction estimation method as described above, and the network-side device can be used to perform the steps of the measurement signal transmission method as described above.

[0182] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0183] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0184] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for estimating the direction of arrival of a wave, characterized in that, include: The reflected scattering BSC terminal measures a single measurement signal sent by a network-side device across multiple measurement ranges. The BSC terminal obtains N sets of sum and difference beams based on the measurement results obtained from each measurement range. Each measurement range corresponds to a set of sum and difference beams, and each set of sum and difference beams includes a sum beam and a difference beam. N is the number of measurement ranges and is an integer greater than 1. The BSC terminal estimates the direction of arrival of the measurement signal based on the target sum and difference beam group, wherein the target sum and difference beam group is the sum and difference beam group with the best signal energy and / or the best signal quality among the N sum and difference beam groups; The BSC terminal measures a measurement signal sent by the network-side device across multiple measurement ranges, including: For each measurement range, the BSC terminal uses a load impedance connection method corresponding to that measurement range to measure the measurement signal. The load impedance connection methods corresponding to different measurement ranges are not exactly the same.

2. The method according to claim 1, characterized in that, The BSC terminal measures a measurement signal sent by the network-side device across multiple measurement ranges, including: The BSC terminal measures the measurement signal within different measurement ranges at different times; or, The BSC terminal measures the measurement signals of different measurement ranges through different panels of the BSC terminal at the same time.

3. The method according to claim 1 or 2, characterized in that, After the BSC terminal estimates the direction of arrival of the measurement signal based on the target group and beam difference beam, the method further includes: The BSC UE modulates the information bits to be transmitted; The BSC UE reflects the information bits to be transmitted based on the estimated direction of arrival.

4. An incoming wave direction estimation device, applied to a BSC terminal, characterized in that, include: The first measurement module is used to measure a measurement signal sent by a network-side device across multiple measurement ranges. The first acquisition module is used to acquire N sets of sum and difference beams based on the measurement results obtained from each of the measurement ranges, wherein one measurement range corresponds to one set of sum and difference beams, and one set of sum and difference beams includes one sum beam and one difference beam, and N is the number of measurement ranges, and N is an integer greater than 1. An estimation module is used to estimate the direction of arrival of the measurement signal based on the target sum-difference beam group, wherein the target sum-difference beam group is the sum-difference beam group with the best signal energy and / or the best signal quality among the N sum-difference beam groups; The first measurement module measures a measurement signal sent by the network-side device across multiple measurement ranges, including: For each measurement range, the BSC terminal uses a load impedance connection method corresponding to that measurement range to measure the measurement signal. The load impedance connection methods corresponding to different measurement ranges are not exactly the same.

5. The apparatus according to claim 4, characterized in that, The first measurement module measures a measurement signal sent by the network-side device across multiple measurement ranges, including: The measurement signal is measured at different times and within different measurement ranges; or, The measurement signals of different measurement ranges are measured simultaneously through different panels of the BSC terminal.

6. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the wave direction estimation method as described in any one of claims 1 to 3.

7. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the wave direction estimation method as described in any one of claims 1 to 3.

Images