Signal processing and transmission method, device and equipment

Abstract

Disclosed are a signal processing and transmission method, apparatus and device, belonging to the technical field of communications, the communication processing method of the embodiment of the present application comprising: a first device receiving N first signals sent by a second device through at least two receiving antennas, the N first signals respectively corresponding to N sending antennas of the second device, n is an integer greater than or equal to 2; and the first device obtains an angle of arrival (AOA) through at least two first signals in the N first signals.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a signal processing, transmission method, apparatus, and device. Background Art

[0002] The Angle-of-Arrival (AoA) of a signal is the direction of the received signal (such as radio, optical, or acoustic). One application of AoA is in the geolocation of mobile phones, with the aim of enabling the mobile phone system to report the location of the mobile phone making an emergency call, or providing a service to tell mobile phone users where they are.

[0003] Regarding the existing New Radio (NR) positioning process, one device sends a signal and another device receives the signal. Due to the limited number of receiving (Rx) antennas at the receiving end (such as a User Equipment (UE)), the accuracy of the estimated Angle-of-Arrival (AOA) at the receiving end is limited. Summary of the Invention

[0004] Embodiments of this application provide a signal processing, transmission method, apparatus, and device to improve the AOA estimation accuracy.

[0005] In a first aspect, a signal processing method is provided, which includes:

[0006] A first device receives N first signals sent by a second device through at least two receiving antennas, where the N first signals respectively correspond to N transmitting antennas of the second device, and N is an integer greater than or equal to 2;

[0007] The first device obtains the Angle-of-Arrival (AOA) through at least two of the N first signals.

[0008] In a second aspect, a signal processing apparatus is provided, which is applied to the first device and includes:

[0009] A first receiving module, configured to receive N first signals sent by a second device through at least two receiving antennas, where the N first signals respectively correspond to N transmitting antennas of the second device, and N is an integer greater than or equal to 2;

[0010] A first obtaining module, configured to obtain the Angle-of-Arrival (AOA) through at least two of the N first signals.

[0011] In a third aspect, a signal transmission method is provided, which includes:

[0012] The second device sends N first signals to the first device through N transmitting antennas;

[0013] Wherein, N is an integer greater than or equal to 2.

[0014] In a fourth aspect, a signal transmission device is provided, which is applied to a second device and includes:

[0015] A first transmission module, configured to transmit N first signals to a first device through N transmission antennas;

[0016] Wherein, N is an integer greater than or equal to 2.

[0017] In a fifth aspect, a signal processing device is provided. The signal processing device is the first device and includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0018] In a sixth aspect, a signal processing device is provided. The signal processing device is the first device and includes a processor and a communication interface. Wherein, the communication interface is configured to receive N first signals sent by the second device through at least two receiving antennas. The N first signals respectively correspond to the N transmission antennas of the second device, and N is an integer greater than or equal to 2;

[0019] The processor is configured to obtain the angle of arrival (AOA) through at least two of the N first signals.

[0020] In a seventh aspect, a signal transmission device is provided. The signal transmission device is the second device and includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the third aspect are implemented.

[0021] In an eighth aspect, a signal transmission device is provided. The signal transmission device is the second device and includes a processor and a communication interface. Wherein, the communication interface is configured to transmit N first signals to the first device through N transmission antennas;

[0022] Wherein, N is an integer greater than or equal to 2.

[0023] In a ninth aspect, a communication system is provided, including: a first device and a second device. The first device can be configured to execute the steps of the method described in the first aspect, and the second device can be configured to execute the steps of the method described in the third aspect.

[0024] In a tenth aspect, a readable storage medium is provided. The readable storage medium stores a program or instruction. When the program or instruction is executed by a processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0025] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement the steps of the method as described in the first aspect or the third aspect.

[0026] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect or the third aspect.

[0027] In an embodiment of the present application, by receiving N first signals sent by a second device through N transmitting antennas based on at least two receiving antennas, and jointly processing at least two of the N first signals to obtain the AOA, without increasing the receiving antennas, the transmitting antennas are increased, and a fixed phase difference is generated at the transmitting end to equivalently achieve the purpose of increasing the receiving antenna aperture, thereby improving the AOA estimation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a block diagram of a wireless communication system to which an embodiment of the present application can be applied;

[0029] Figure 2 is a schematic flowchart of a signal processing method according to an embodiment of the present application;

[0030] Figure 3 is a schematic diagram of angle measurement;

[0031] Figure 4 is a schematic flowchart of a signal transmission method according to an embodiment of the present application;

[0032] Figure 5 is a schematic block diagram of a signal processing device according to an embodiment of the present application;

[0033] Figure 6 is a schematic structural diagram of a signal processing device according to an embodiment of the present application;

[0034] Figure 7 is a schematic block diagram of a signal transmission device according to an embodiment of the present application;

[0035] Figure 8 is a schematic structural diagram of a signal transmission device according to an embodiment of the present application;

[0036] Figure 9 is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following will clearly describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application belong to the scope of protection of the present application.

[0038] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0039] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the recipient of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the recipient determines the corresponding information based on the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0040] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and 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), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th th Generation (6G) communication system.

[0041] Figure 1Block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station may be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. 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 the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0042] The core network device may include, but is not limited to, at least one of the following: core network nodes, core network functions, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0043] The signal processing, transmission methods, devices and equipment provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

[0044] As Figure 2 shown, the embodiments of this application provide a signal processing method, including:

[0045] Step 201, the first device receives N first signals sent by the second device through at least two receiving antennas, and the N first signals respectively correspond to the N transmitting antennas of the second device, where N is an integer greater than or equal to 2;

[0046] It should be noted that each first signal in the embodiments of the present application corresponds to a transmitting antenna, that is, a transmitting antenna of the second device transmits one first signal.

[0047] Step 202, the first device obtains the angle of arrival (AOA) through at least two of the N first signals.

[0048] It should be noted that when the first device receives N first signals, by jointly processing at least two of the N first signals, the AOA is obtained together. That is, the first device can jointly process the first signals of different transmitting antennas to estimate the AOA. Without increasing the receiving antennas, the transmitting antennas are increased, and a fixed phase difference is generated at the transmitting end to achieve the purpose of equivalently increasing the aperture of the receiving antenna, thereby improving the AOA estimation accuracy.

[0049] In the embodiments of the present application, the first device refers to the device that receives the first signal, that is, the receiving end of the first signal, and the second device refers to the device that transmits the first signal, that is, the transmitting end of the first signal; optionally, the first device can be a terminal, and the second device is a network-side device (such as a base station); optionally, the first device can be a terminal, and the second device is a terminal; optionally, the first device can be a network-side device, and the second device is a terminal; of course, the first device and the second device can also be in other combination forms, which will not be elaborated here one by one.

[0050] Optionally, the N transmitting antennas of the second device are equally spaced, and the spacing between the transmitting antennas is M times the spacing between the receiving antennas, where M is greater than or equal to 2.

[0051] It should be noted that through this setting method, the phases of different transmitting antennas arriving at the receiving antennas can show a certain pattern (such as an arithmetic progression), which can increase the resolution of measuring the angle of arrival.

[0052] Optionally, in one implementation, the value of M is the number of receiving antennas of the first device. For example, if the first device receives N first signals through 2 receiving antennas, the spacing between the transmitting antennas is 2 times the spacing between the receiving antennas.

[0053] Optionally, the spacing between the transmitting antennas being M times the spacing between the receiving antennas includes at least one of the following:

[0054] A11. The spacing between the transmitting antennas in the horizontal direction is M times the spacing between the receiving antennas in the horizontal direction;

[0055] Optionally, M is the number of receiving antennas of the first device in the horizontal direction.

[0056] The spacing between the transmitting antennas in the vertical direction is M times the spacing between the receiving antennas in the vertical direction;

[0057] Optionally, M is the number of receiving antennas in the vertical direction of the first device.

[0058] Optionally, M can be determined by at least one of the following:

[0059] A21、Determined by the second device;

[0060] A22、Indicated by the first device;

[0061] A23、Indicated by the third setting;

[0062] It should be noted that the third device is a device other than the first device and the second device. For example, the third device is a control node between the first device and the second device. For example, it can be a location service device, a location server, etc.

[0063] A24、Agreement by protocol.

[0064] Optionally, in order for the first device to implement joint processing of the first signals, in one implementation, before the first device obtains the angle of arrival (AOA) through at least two of the N first signals, the method further includes:

[0065] The first device obtains first indication information, which is used to indicate the correlation relationship of the N first signals or to indicate that the N first signals are correlated signals.

[0066] It should be noted that after the first device obtains the first indication information, it can know that the N first signals can be jointly processed to obtain the AOA, so as to realize the joint processing of multiple first signals; in this way, it can ensure that the first device enables joint measurement as needed and ensure the reliability of AOA measurement.

[0067] Optionally, the first indication information can be directly sent from the second device to the first device, or the second device can first send it to the third device, and then the third device forwards it to the first device.

[0068] Optionally, in one implementation, the first indication information is further used to indicate at least one of the following:

[0069] B11、The signal identification information of the N first signals used to estimate the horizontal direction AOA;

[0070] In this case, it can be understood that the first indication information can also indicate which of the N first signals are used to estimate the horizontal direction AOA.

[0071] B12. The signal identification information of the N first signals for estimating the vertical direction AOA;

[0072] In this case, it can be understood that the first indication information can also indicate which of the N first signals are used to estimate the vertical direction AOA.

[0073] It should be noted that since AOA can be specifically refined into horizontal direction AOA and vertical direction AOA, the above two cases can specifically indicate the signals for obtaining AOA in different directions, so as to ensure that the terminal can accurately obtain AOA and ensure that the obtained AOA meets the requirements of the sending end.

[0074] B13. The order of the N first signals, and the order corresponds to the position order of the N transmitting antennas corresponding to the N first signals;

[0075] It should be noted that this order is also the order of the reception phases of the N first signals in the joint processing during the process of the first device obtaining AOA through the N first signals.

[0076] It should be noted that by indicating the order of the N first signals, the first device can determine the transmission order of the first signals, so as to assist in accurately obtaining AOA.

[0077] It should be noted that by indicating the above B11 - B13, the first device can obtain AOA according to requirements, so as to ensure that the obtained AOA meets the requirements of the second device and ensure that the obtained AOA is more accurate.

[0078] Optionally, in one implementation, the order of the N first signals includes at least one of the following:

[0079] B131. The horizontal direction order of the N first signals;

[0080] B132. The vertical direction order of the N first signals.

[0081] Optionally, in one implementation, the obtaining of the first indication information sent by the second device includes:

[0082] The first device obtains the auxiliary information or measurement request sent by the second device;

[0083] Wherein, the auxiliary information or measurement request includes the first indication information.

[0084] Optionally, the auxiliary information may include the configuration of the first signal.

[0085] Optionally, the measurement request is used to request the first device to measure the first signal.

[0086] Optionally, the auxiliary information may be, for example, positioning auxiliary information. Optionally, if the first indication information is included in the positioning auxiliary information, a first signal with an associated relationship may be further requested for AOA measurement in the positioning request sent to the first device.

[0087] Among them, the measurement request may come from the second device or the third device. The auxiliary information may come from the second device or the third device. One implementation: both the measurement request and the auxiliary information come from the third device, such as a location server.

[0088] Optionally, in order to ensure that the second device can successfully send the first signal, in one implementation, the method further includes:

[0089] The first device sends first information, which is used to assist the second device in determining the transmission format of the first signal.

[0090] It should be noted that the transmission format includes but is not limited to at least one of the following: the number of first signals, the transmission antennas corresponding to the first signals, and the configuration of the first signals.

[0091] Optionally, the first information may be directly sent from the first device to the second device, or the first device may first send it to the third device, and then the third device forwards it to the second device.

[0092] Optionally, the first information includes at least one of the following:

[0093] C11. The receiving antenna information of the first device;

[0094] Optionally, the receiving antenna information includes at least one of the following:

[0095] C111. The number of receiving antennas for measuring AOA;

[0096] Optionally, the receiving antenna may include at least one of a horizontal-direction receiving antenna and a vertical-direction receiving antenna.

[0097] C112. The interval between receiving antennas;

[0098] Optionally, the receiving antenna may include at least one of a horizontal-direction receiving antenna and a vertical-direction receiving antenna.

[0099] C113. The aperture of the receiving antenna;

[0100] Optionally, the receiving antenna may include at least one of a horizontal-direction receiving antenna and a vertical-direction receiving antenna.

[0101] C114. The position distribution of the receiving antennas;

[0102] C115. Conversion parameters between the local coordinate system (LCS) and the global coordinate system (GCS) of the first device.

[0103] C12. First angle auxiliary information;

[0104] It should be noted that the first angle auxiliary information is the angle between the first device and the second device. This angle is a rough angle, and the first angle auxiliary information is used to assist the second device in determining the transmission format of the first signal when the LCSs of the first device and the second device are different (or not related).

[0105] Optionally, in one implementation, the method further includes:

[0106] The first device receives a request message, and the request message is used to request the reporting of the AOA measurement result.

[0107] Optionally, the request message includes at least one of the following:

[0108] D11. Second indication information, which is used to indicate that the first device obtains the AOA based on at least two first signals;

[0109] It should be noted that this situation can be understood as the second indication information being used to indicate that the first device performs joint processing on at least two first signals to obtain the AOA.

[0110] Optionally, the second indication information can also indicate the first signals for joint processing, and can be indicated by the identification information of the first signal. For example, it can indicate the number or index of the first signal.

[0111] D12. Third indication information, which is used to indicate the association relationship of N first signals, or to indicate that N first signals are associated signals;

[0112] D13. AOA accuracy requirement;

[0113] For example, the AOA accuracy requirement can be a requirement within a specific degree. For example, the AOA accuracy requirement is 1 degree, that is, the error of the finally obtained AOA should be within 1 degree.

[0114] D14. AOA reporting granularity;

[0115] For example, the AOA reporting accuracy can be understood as the minimum unit of AOA reporting. For example, for measurements with lower accuracy requirements, the reporting accuracy can be reported to an integer; for measurements with higher accuracy requirements, the reporting accuracy can be reported to one or two decimal places, etc.

[0116] D15. AOA search window;

[0117] Optionally, the AOA search window is an angular search range for the first device to determine the AOA search range. The search window configuration consists of an expected AOA and an AOA uncertainty. The expected AOA is used to determine the central angle of the search window, and the AOA uncertainty is used to determine the size of the search window.

[0118] D16, the number of AOA measurement results;

[0119] Optionally, in one case, in the algorithm for determining AOA through the phase difference between receiving antennas, the resolved AOA results are not unique, and the first device needs to report the non-unique AOA measurement results. The number of non-unique AOA measurement results is the number of AOA measurement results.

[0120] D17, the type of coordinate system corresponding to the AOA measurement result, where the coordinate system type includes: LCS or GCS;

[0121] D18, the number of time instances of the first signal used to obtain the AOA measurement result;

[0122] Optionally, the time instance mentioned in the embodiments of the present application can also be expressed as a sample. For example, for a periodic first signal, one time instance corresponds to one period of the first signal.

[0123] It should be noted that by sending the request information, the first device realizes the feedback of the AOA measurement result based on the request, avoiding the feedback of invalid AOA measurement results by the first device and ensuring the reliability of information transmission.

[0124] Optionally, in one implementation, the method further includes:

[0125] The first device receives second information, which includes at least one of the following: second angle assistance information, LCS conversion parameters of the second device;

[0126] The second information is used for the first device to obtain the AOA based on at least two first signals.

[0127] Optionally, the second information can be directly sent from the second device to the first device, or the second device can first send it to the third device, and then the third device forwards it to the first device.

[0128] It should be noted that the second angle assistance information is the angle between the first device and the second device, and this angle is a rough angle, which is used to assist the first device in determining the AOA.

[0129] It should be noted that by sending the second information, the first device can be assisted in accurately obtaining the AOA, so as to improve the accuracy of AOA acquisition.

[0130] Optionally, in one implementation, the method further includes:

[0131] The first device sends an AOA measurement result;

[0132] Wherein, the AOA measurement result includes at least one of the following:

[0133] E11. AOA measurement quantity;

[0134] E12. Identification information of at least two first signals for obtaining the AOA measurement quantity;

[0135] It should be noted that the identification information may include at least one of the following:

[0136] E121. Resource identifier associated with the AOA measurement quantity;

[0137] It should be noted that this situation applies to the case of using multiple resources, that is, the second device sends N first signals to the first device through N resources.

[0138] For example, the resource identifier may be a downlink positioning reference signal (DL PRS) resource identifier, a sounding reference signal (SRS) resource identifier, or a sidelink positioning reference signal (SL PRS) resource identifier. Optionally, the resource identifier may be a resource number or a resource index.

[0139] Optionally, if the AOA measurement quantity is determined through multiple resources, the identifiers of multiple resources are reported, or the first device only reports one resource identifier to represent that multiple resources are associated resources.

[0140] E122. Repetition index of the resource associated with the AOA measurement quantity;

[0141] It should be noted that this situation applies to the case of using a resource multiple times, that is, the second device sends N first signals to the first device through N repetitions of the same resource.

[0142] Optionally, if the AOA measurement quantity is determined through multiple repetitions of a resource, multiple repetition indexes are reported, or the first device only reports one repetition index to represent that the resource is repeated multiple times.

[0143] E123. Port index of the resource associated with the AOA measurement quantity

[0144] It should be noted that this situation applies to the case of using multiple ports of a single resource, that is, the second device sends N first signals to the first device through N ports of a single resource.

[0145] Optionally, if the AOA measurement quantity is determined through multiple ports, then multiple port indexes are reported, or the first device only reports one port index to represent that the first signals sent through multiple ports are associated signals.

[0146] E13. The timestamp corresponding to the AOA measurement quantity;

[0147] It should be noted that this timestamp can be understood as the measurement time corresponding to the AOA measurement quantity.

[0148] E14. LCS and GCS conversion parameters;

[0149] E15. The fourth indication information, which is used to indicate the measurement quality of the AOA measurement quantity;

[0150] It should be noted that this measurement quality can refer to the quality of the AOA measurement quantity. For example, if the measurement quality is excellent, it means that the obtained AOA measurement quantity is good; if the measurement quality is poor, it means that the obtained AOA measurement quantity is poor.

[0151] Optionally, in one implementation, the AOA measurement result is the measurement result obtained by processing a single time instance or the measurement result obtained by processing multiple time instances.

[0152] For example, if the AOA measurement result is the measurement result obtained by processing a single time instance, then the timestamp included in the single measurement result reported by the first device corresponds to one time instance.

[0153] For example, if the AOA measurement result is the measurement result obtained by processing multiple time instances, then the timestamp included in the single measurement result reported by the first device is associated with multiple time instances.

[0154] It should be noted that by reporting the measurement result to the second device, the second device can obtain the AOA in a timely manner, so as to adjust the direction of the transceiver antenna in a timely manner based on the AOA and accurately transmit information with the first device.

[0155] Optionally, in one implementation, the LCS of the first device is associated with that of the second device.

[0156] Optionally, the association between the first device and the LCS of the second device can be understood as follows: the LCS of the first device is the same as that of the second device, or it can also be understood that the LCS of the first device is opposite to that of the second device, or it can also be understood that the LCS of the first device and the second device satisfies other relationships; after the first device determines the relationship between its LCS and that of the second device, when performing AOA measurement, it can accurately perform coordinate system conversion to ensure the accuracy of the determined AOA.

[0157] Optionally, in one implementation, the N first signals satisfy at least one of the following:

[0158] F11: Use the same spatial transmission filter;

[0159] F12: Use the same frequency point;

[0160] F13: Use the same bandwidth;

[0161] F14: Transmit within a preset time period in the time domain;

[0162] For example, the preset time can be one time slot. For example, the N first signals are transmitted within one time slot in the time domain, that is, all N first signals need to be transmitted completely within one time slot.

[0163] F15: Have the same initial phase;

[0164] F16: Have the same phase adjustment factor;

[0165] F17: Be transmitted through the same resource;

[0166] F18: Have different time domain positions;

[0167] F19: Have the same frequency domain position.

[0168] Optionally, in one implementation, the first device receiving the N first signals sent by the second device includes at least one of the following:

[0169] H11: The first device receives the N first signals sent by the second device through N ports of one resource;

[0170] This situation can be understood as that the second device needs to use different ports of the same resource to send the N first signals respectively.

[0171] H12: The first device receives the N first signals sent by the second device through N repeated transmissions of the same resource;

[0172] This situation can be understood as that the second device needs to use the same resource to send the N first signals, that is, the second device needs to perform the same N transmissions on the same resource.

[0173] H13. The first device receives N first signals sent by the second device through N resources;

[0174] This situation can be understood as that the second device needs to use different resources to send N first signals respectively.

[0175] The following gives examples of different combinations of the first device and the second device as follows.

[0176] Example 1. For downlink measurement, the first device is a terminal, the second device is a network-side device, and the first signal is DLPRS

[0177] Optionally, the N PRSs are N ports of a DL PRS resource, or N repetitions of the same DL PRS resource, or N DL PRS resources.

[0178] Further, the second device indicates the association relationship of the N PRSs (or indicates that the N PRSs are associated signals) for the terminal to perform joint processing to obtain AOA.

[0179] Optionally, the second device may indicate at least one of the following:

[0180] Indicate that a certain N ports among multiple ports of the same DL PRS resource have an association relationship;

[0181] Indicate that a certain N repetitions among multiple repetitions of the same DL PRS resource have an association relationship;

[0182] Indicate that N DL PRS resources among multiple DL PRS resources (such as within a resource set) have an association relationship.

[0183] Example 2. For UL measurement, the first device is a network-side device, the second device is a terminal, and the first signal is SRS

[0184] Optionally, the N SRSs are N ports of an SRS resource, or N repetitions of the same SRS resource, or N SRS resources.

[0185] Further, the second device indicates the association relationship of the N SRSs (or indicates that the N SRSs are associated signals) for the first device to perform joint processing to obtain AOA.

[0186] Optionally, the second device may indicate at least one of the following:

[0187] Indicate that a certain N ports among multiple ports of the same SRS resource have an association relationship;

[0188] Indicates that N repetitions out of multiple repetitions of the same SRS resource have an association relationship;

[0189] Indicates that N SRS resources out of multiple SRS resources have an association relationship.

[0190] Example 3: For SL measurement, the first device is a terminal, the second device is a terminal, and the signal is SL PRS

[0191] Optionally, the N PRSs are N ports of an SL PRS resource, or N repetitions of an SL PRS resource, or N SL PRS resources.

[0192] Furthermore, the second device indicates the association relationship of the N PRSs (or indicates that the N PRSs are associated signals) for the first device to perform joint processing to obtain the AOA.

[0193] Optionally, the second device may indicate at least one of the following:

[0194] Indicates that N ports out of multiple ports of the same SL PRS resource have an association relationship;

[0195] Indicates that N repetitions out of multiple repetitions of the same SL PRS resource have an association relationship;

[0196] Indicates that N SL PRS resources out of multiple SL PRS resources have an association relationship.

[0197] The implementation principle of the embodiments of the present application is described as follows.

[0198] Assume that device A sends a signal and device B receives the signal; assume it is a LOS channel

[0199]

[0200] Among them, is the time-domain channel corresponding to the LOS path; is the receiving antenna radiation field matrix; is the transmitting antenna radiation field matrix; d 3D is the 3D distance between the transmitting device and the receiving device; is the AOA angle of the LOS path; is the Rx antenna position; is the Tx antenna position; is the velocity vector; t is time; u is the receiving antenna index; s is the transmitting antenna index; l is the first cluster, that is, the cluster corresponding to the LOS path; j is a complex number.

[0201] The unit vector of the GCS corresponding to the angle of arrival of device B is:

[0202]

[0203]

[0204] Among them, is the unit vector of the GCS corresponding to the angle of arrival of the m-th ray in the n-th cluster; θ n,m,ZOA is the vertical direction angle in polar coordinates; is the horizontal direction angle in polar coordinates.

[0205] The unit vector of the GCS corresponding to the angle of departure of device A is:

[0206]

[0207] Among them, is the unit vector of the GCS corresponding to the angle of departure of the m-th ray in the n-th cluster; θ n,m,ZOD is the vertical direction angle in polar coordinates; is the horizontal direction angle in polar coordinates.

[0208] If it is a Line-of-sight (LOS) channel, then the horizontal direction angle of departure and the angle of arrival differ by 180 degrees, and the sum of the vertical direction angle of departure and the angle of arrival is 180 degrees. Therefore, for device A and device B, the unit vectors of the angles are ± to each other, with a phase difference of pi.

[0209] Suppose Then

[0210] The coordinate transformation matrix between the LCS and the GCS. Among them, α, β, and γ are the rotation angles of the array antenna relative to the coordinate axes of the GCS.

[0211]

[0212]

[0213] Among them, R is the transformation matrix between the LCS and the GCS; α is the azimuth angle, β is the depression angle, and γ is the tilt angle.

[0214] Vector transformation from LCS to GCS, where is the vector in the LCS, and ρ is the vector in the GCS:

[0215] Vector transformation from GCS to LCS:

[0216] Suppose the LCS coordinates of a receiving antenna of the receiving device are: where a, b, and c are the coordinates of the three coordinate axes.

[0217] Suppose the LCS coordinates of a transmitting antenna of the transmitting device are: where d, e, and f are the coordinates of the three coordinate axes.

[0218] The corresponding receiving antenna phase:

[0219] Suppose the receiving end is simplified Let Then the corresponding receiving antenna phase:

[0220] Transmitting antenna phase:

[0221] Suppose the transmitting end is simplified Let Then the corresponding transmitting antenna phase is:

[0222]

[0223] After multiplying the receiving antenna phase by the transmitting antenna phase:

[0224] Furthermore, suppose the antennas at the transmitting and receiving ends only consider one dimension, that is, only consider a and d, then there is:

[0225]

[0226] Suppose the transmitting device and the receiving device use the same LCS. Then, (L M N) = (L′ M′ N′), and the product of the receiving antenna phase and the transmitting antenna phase is:

[0227] Furthermore, suppose the antennas at the transmitting and receiving ends only consider one dimension, then:

[0228] Furthermore, suppose:

[0229] Receiving end antenna coordinates, 4*1:

[0230] {a, b, c} ∈ {0, 0, 0}, {d x , 0, 0}, {2d x , 0, 0}, {3d x , 0, 0};

[0231] Transmitting end antenna coordinates, 4*1:

[0232] {d, e, f} ∈ {0, 0, 0}, {-Dx , 0, 0}, {-2D x , 0, 0}, {-3D x , 0, 0};

[0233] Assume there are 4 receiving antennas at the receiving end, corresponding to {a, b, c} ∈ {0, 0, 0}, {d x , 0, 0}, {2d x , 0, 0}, {3d x , 0, 0};

[0234] Assume there is 1 transmitting antenna at the transmitting end, {d, e, f} ∈ {0, 0, 0};

[0235] Then, the phases corresponding to the 4 receiving antennas are:

[0236]

[0237] If 1 transmitting antenna is added at the transmitting end, corresponding to {d, e, f} ∈ {-D x , 0, 0}, then the phases of the 4 receiving antennas corresponding to the added transmitting antenna are:

[0238]

[0239] Therefore, if the added transmitting antenna at the transmitting end can equivalently increase the receiving antenna aperture, then it is required that D = 4d. And it is required that there is a correlation between the LCS of transmission and reception, such as the same LCS.

[0240] If the LCS is different and only considering one dimension, then the phases are:

[0241] Assume there are 4 receiving antennas at the receiving end, corresponding to {a, b, c} ∈ {0, 0, 0}, {d x , 0, 0}, {2d x , 0, 0}, {3d x , 0, 0};

[0242] Assume there is 1 transmitting antenna at the transmitting end, {d, e, f} ∈ {0, 0, 0}. Then, the phases corresponding to the 4 Rx antennas are:

[0243]

[0244] If 1 transmitting antenna is added at the transmitting end, corresponding to {d, e, f} ∈ {-D x , 0, 0}, then the phases of the 4 receiving antennas corresponding to the added transmitting antenna are:

[0245]

[0246] If the antenna aperture is equivalently increased, then

[0247] L′D x = L4d x

[0248]

[0249] However, considering that L’ is related to the departure angle and the LCS of the transmitting end, and L is related to the arrival angle and the LCS of the receiving end. Even if the LCS of the transmitting end and the receiving end is known, but the departure angle and the arrival angle cannot be predicted, it may not be possible to obtain the ratio of L to L’. Therefore, when the LCS of the transmitting and receiving ends is different or not related, it is difficult to achieve the function of equivalently increasing the receiving aperture by adjusting the receiving and transmitting antennas.

[0250] Of course, if the prior information of the angle can be roughly obtained, even if the LCS is different, it may be possible to work by adjusting the transmitting antenna and the receiving antenna. Or, even if the LCS is different, resulting in unequal intervals of the receiving phases of the receiving antennas corresponding to different transmitting antennas at the receiving end, based on the implementation, the receiving end can also perform joint processing to improve the AOA accuracy.

[0251] Specifically, the specific implementation process for the receiving end to obtain the AOA is as follows:

[0252] The schematic diagram of angle measurement is as Figure 3 shown. In a group of antenna arrays, assuming the number of antennas is M, a phase vector of M×1 dimension about the azimuth angle θ is generated, that is:

[0253]

[0254] When and only when d (the distance between two antennas) is d = λ / 2, there is:

[0255]

[0256] The azimuth angle antenna array a(θ) H is multiplied by the receiving channel matrix H M , that is a(θ) H *H M , and the new vector obtained is then used to calculate the two-norm of this vector.

[0257] A vector a(θ) T is generated according to the search granularity set for θ (such as every 0.2 degrees) T , and the two-norm of all a(θ)

[0258] vectors and the channel matrix are calculated, and the angle corresponding to the maximum two-norm is the arrival angle. θ ‖a H (θ)H M ‖2 。

[0259] It should be noted that, in the embodiments of the present application, without adding receiving antennas, by adding transmitting antennas at specific positions, a fixed phase difference is generated at the transmitting end. When using the same receiver, it equivalently achieves the effect of doubling the receiving antenna aperture; by processing the signals of specific transmitting antennas at the receiving end, it equivalently achieves the purpose of increasing the receiving aperture and improves the AOA estimation accuracy.

[0260] As Figure 4 shown, the embodiments of the present application provide a signal transmission method, including:

[0261] Step 401, the second device sends N first signals to the first device through N transmitting antennas;

[0262] wherein, N is an integer greater than or equal to 2.

[0263] Optionally, the interval between the transmitting antennas is M times the interval between the receiving antennas of the first device, and M is greater than or equal to 2.

[0264] Optionally, the method further includes:

[0265] The second device sends first indication information, and the first indication information is used to indicate the association relationship of the N first signals or to indicate that the N first signals are associated signals.

[0266] Optionally, the first indication information is further used to indicate at least one of the following:

[0267] The signal identification information of the first signals among the N first signals for estimating the horizontal direction AOA;

[0268] The signal identification information of the first signals among the N first signals for estimating the vertical direction AOA;

[0269] The order of the N first signals, and the order corresponds to the position order of the N transmitting antennas corresponding to the N first signals.

[0270] Optionally, the order of the N first signals includes at least one of the following:

[0271] The horizontal direction order of the N first signals;

[0272] The vertical direction order of the N first signals.

[0273] Optionally, sending the first indication information includes:

[0274] The second device sends auxiliary information or a measurement request;

[0275] Among them, the auxiliary information or the measurement request includes the first indication information.

[0276] Optionally, the method further includes:

[0277] The second device receives first information, where the first information is used to assist the second device in determining the transmission format of a first signal;

[0278] Among them, the first information includes at least one of the following: the receiving antenna information of the first device, first angle assistance information.

[0279] Optionally, the receiving antenna information includes at least one of the following:

[0280] The number of receiving antennas for measuring AOA;

[0281] The spacing between receiving antennas;

[0282] The aperture of the receiving antenna;

[0283] The position distribution of the receiving antennas;

[0284] The conversion parameters between the local coordinate system LCS and the global coordinate system GCS of the first device.

[0285] Optionally, the method further includes:

[0286] The second device sends request information, where the request information is used to request the reporting of AOA measurement results.

[0287] Optionally, the request information includes at least one of the following:

[0288] Second indication information, where the second indication information is used to instruct the first device to obtain AOA based on at least two first signals;

[0289] Third indication information, where the third indication information is used to indicate the association relationship of N first signals, or is used to indicate that N first signals are associated signals;

[0290] AOA accuracy requirement;

[0291] AOA reporting granularity;

[0292] AOA search window;

[0293] The number of AOA measurement results;

[0294] The coordinate system type corresponding to the AOA measurement result, where the coordinate system type includes: LCS or GCS;

[0295] The number of time instances of the first signal used to obtain the AOA measurement result.

[0296] Optionally, the method further includes:

[0297] The second device sends second information, where the second information includes at least one of the following: second angle assistance information, LCS conversion parameters of the second device;

[0298] where the second information is used for the first device to obtain AOA based on at least two first signals.

[0299] Optionally, the method further includes:

[0300] The second device receives the AOA measurement result;

[0301] where the AOA measurement result includes at least one of the following:

[0302] AOA measurement quantity;

[0303] Identification information of at least two first signals for obtaining the AOA measurement quantity;

[0304] Timestamp corresponding to the AOA measurement quantity;

[0305] LCS and GCS conversion parameters;

[0306] Fourth indication information, where the fourth indication information is used to indicate the measurement quality of the AOA measurement quantity.

[0307] Optionally, the AOA measurement result is a measurement result obtained by processing a single time instance or a measurement result obtained by processing multiple time instances.

[0308] Optionally, the first device is associated with the LCS of the second device.

[0309] Optionally, the N first signals satisfy at least one of the following:

[0310] Using the same spatial transmission filter;

[0311] Using the same frequency point;

[0312] Using the same bandwidth;

[0313] Transmitted within a preset time period in the time domain;

[0314] Having the same initial phase;

[0315] Having the same phase adjustment factor;

[0316] Transmitted through the same resource;

[0317] Having different time domain positions;

[0318] Having the same frequency domain position.

[0319] Optionally, sending N first signals to the first device includes at least one of the following:

[0320] The second device sends N first signals to the first device through N ports of one resource;

[0321] The second device sends N first signals to the first device through N repetitions of the same resource;

[0322] The second device sends N first signals to the first device through N resources.

[0323] It should be noted that all descriptions on the second device side in the above embodiments are applicable to the embodiments of the signal transmission method applied to the second device side, and can also achieve the same technical effects, which will not be elaborated here.

[0324] In the signal processing method provided by the embodiments of the present application, the execution subject may be a signal processing device. In the embodiments of the present application, taking the signal processing device executing the signal processing method as an example, the signal processing device provided by the embodiments of the present application is described.

[0325] As Figure 5 shown, the signal processing device 500 of the embodiments of the present application is applied to the first device and includes:

[0326] A first receiving module 501, configured to receive N first signals sent by a second device through at least two receiving antennas, where the N first signals respectively correspond to N transmitting antennas of the second device, and N is an integer greater than or equal to 2;

[0327] A first obtaining module 502, configured to obtain the angle of arrival AOA through at least two of the N first signals.

[0328] Optionally, the interval between the transmitting antennas is M times the interval between the receiving antennas, and M is greater than or equal to 2.

[0329] Optionally, the device further includes:

[0330] A second obtaining module, configured to obtain first indication information, where the first indication information is used to indicate the association relationship of the N first signals, or is used to indicate that the N first signals are associated signals.

[0331] Optionally, the first indication information is further used to indicate at least one of the following:

[0332] The signal identification information of the signal for estimating the horizontal direction AOA among the N first signals;

[0333] Signal identification information for estimating the vertical direction AOA among N first signals;

[0334] The order of N first signals, where the order corresponds to the position order of N transmitting antennas corresponding to the N first signals.

[0335] Optionally, the order of the N first signals includes at least one of the following:

[0336] The order of the N first signals in the horizontal direction;

[0337] The order of the N first signals in the vertical direction.

[0338] Optionally, the second acquisition module is configured to:

[0339] Acquire auxiliary information or a measurement request sent by the second device;

[0340] Wherein, the auxiliary information or the measurement request includes the first indication information.

[0341] Optionally, the apparatus further includes:

[0342] A second transmission module, configured to transmit first information, where the first information is used to assist the second device in determining the transmission format of the first signal;

[0343] Wherein, the first information includes at least one of the following: the receiving antenna information of the first device, first angle auxiliary information.

[0344] Optionally, the receiving antenna information includes at least one of the following:

[0345] The number of receiving antennas for measuring AOA;

[0346] The interval between receiving antennas;

[0347] The aperture of the receiving antenna;

[0348] The position distribution of the receiving antennas;

[0349] The conversion parameters between the local coordinate system LCS and the global coordinate system GCS of the first device.

[0350] Optionally, the apparatus further includes:

[0351] A second receiving module, configured to receive a request message, where the request message is used to request reporting of the AOA measurement result.

[0352] Optionally, the request message includes at least one of the following:

[0353] Second indication information, where the second indication information is used to instruct the first device to obtain the AOA based on at least two first signals;

[0354] Third indication information, where the third indication information is used to indicate the association relationship of N first signals, or is used to indicate that the N first signals are associated signals;

[0355] AOA accuracy requirement;

[0356] AOA reporting granularity;

[0357] AOA search window;

[0358] Number of AOA measurement results;

[0359] Coordinate system type corresponding to the AOA measurement result, where the coordinate system type includes: LCS or GCS;

[0360] Number of time instances of the first signal used to obtain the AOA measurement result.

[0361] Optionally, the device further includes:

[0362] A third receiving module, configured to receive second information, where the second information includes at least one of the following: second angle assistance information, LCS conversion parameters of the second device;

[0363] Wherein, the second information is used for the first device to obtain the AOA based on at least two first signals.

[0364] Optionally, the device further includes:

[0365] A third sending module, configured to send the AOA measurement result;

[0366] Wherein, the AOA measurement result includes at least one of the following:

[0367] AOA measurement quantity;

[0368] Identification information of at least two first signals for obtaining the AOA measurement quantity;

[0369] Timestamp corresponding to the AOA measurement quantity;

[0370] LCS and GCS conversion parameters;

[0371] Fourth indication information, where the fourth indication information is used to indicate the measurement quality of the AOA measurement quantity.

[0372] Optionally, the AOA measurement result is a measurement result obtained by processing a single time instance or a measurement result obtained by processing multiple time instances.

[0373] Optionally, the first device is associated with the LCS of the second device.

[0374] Optionally, the N first signals satisfy at least one of the following:

[0375] Use the same spatial transmission filter;

[0376] Use the same frequency point;

[0377] Use the same bandwidth;

[0378] Be transmitted within a preset time period in the time domain;

[0379] Have the same initial phase;

[0380] Have the same phase adjustment factor;

[0381] Be transmitted through the same resource;

[0382] Have different time domain positions;

[0383] Have the same frequency domain position.

[0384] Optionally, the first receiving module 501 is configured to implement at least one of the following:

[0385] Receive the N first signals sent by the second device through N ports of one resource;

[0386] Receive the N first signals sent by the second device through N repetitions of the same resource;

[0387] Receive the N first signals sent by the second device through N resources.

[0388] It should be noted that the device embodiment corresponds to the above method. All implementation manners in the above method embodiment are applicable to this device embodiment and can achieve the same technical effects, which will not be elaborated here.

[0389] The signal processing device in the embodiments of the present application may 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 may be a terminal or other devices other than a terminal. Exemplarily, the terminal may include, but is not limited to, the types of the above-mentioned terminal 11, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0390] An embodiment of the present application further provides a signal processing device. The signal processing device is a first device and includes a processor and a communication interface. Wherein, the communication interface is used to receive N first signals sent by a second device through at least two receiving antennas. The N first signals respectively correspond to N transmitting antennas of the second device, and N is an integer greater than or equal to 2;

[0391] The processor is used to obtain the Angle of Arrival (AOA) through at least two of the N first signals.

[0392] Optionally, the interval between the transmitting antennas is M times the interval between the receiving antennas, and M is greater than or equal to 2.

[0393] Optionally, the processor is further used to:

[0394] Obtain first indication information, where the first indication information is used to indicate the association relationship of the N first signals, or is used to indicate that the N first signals are associated signals.

[0395] Optionally, the first indication information is further used to indicate at least one of the following:

[0396] Signal identification information of the N first signals used to estimate the horizontal direction AOA;

[0397] Signal identification information of the N first signals used to estimate the vertical direction AOA;

[0398] The order of the N first signals, and the order corresponds to the position order of the N transmitting antennas corresponding to the N first signals.

[0399] Optionally, the order of the N first signals includes at least one of the following:

[0400] The horizontal direction order of the N first signals;

[0401] The vertical direction order of the N first signals.

[0402] Optionally, the processor is used to:

[0403] Obtain the auxiliary information or measurement request sent by the second device;

[0404] Wherein, the auxiliary information or measurement request includes the first indication information.

[0405] Optionally, the communication interface is further used to:

[0406] Send first information, where the first information is used to assist the second device in determining the transmission format of the first signal.

[0407] Wherein, the first information includes at least one of the following: receiving antenna information of the first device, first angle assistance information.

[0408] Optionally, the receiving antenna information includes at least one of the following:

[0409] The number of receiving antennas for measuring AOA;

[0410] The spacing between receiving antennas;

[0411] The aperture of the receiving antenna;

[0412] The position distribution of the receiving antennas;

[0413] The conversion parameters between the local coordinate system LCS and the global coordinate system GCS of the first device.

[0414] Optionally, the communication interface is further configured to:

[0415] Receive request information for requesting the reporting of AOA measurement results.

[0416] Optionally, the request information includes at least one of the following:

[0417] Second indication information for indicating that the first device obtains AOA based on at least two first signals;

[0418] Third indication information for indicating the association relationship of N first signals or for indicating that N first signals are associated signals;

[0419] AOA accuracy requirement;

[0420] AOA reporting granularity;

[0421] AOA search window;

[0422] The number of AOA measurement results;

[0423] The coordinate system type corresponding to the AOA measurement result, where the coordinate system type includes: LCS or GCS;

[0424] The number of time instances of the first signal used to obtain the AOA measurement result.

[0425] Optionally, the communication interface is further configured to:

[0426] Receive second information, where the second information includes at least one of the following: second angle assistance information, LCS conversion parameters of the second device;

[0427] Wherein, the second information is used for the first device to obtain AOA based on at least two first signals.

[0428] Optionally, the communication interface is further configured to:

[0429] Transmit the AOA measurement result;

[0430] Wherein, the AOA measurement result includes at least one of the following:

[0431] AOA measurement quantity;

[0432] Identification information of at least two first signals for obtaining the AOA measurement quantity;

[0433] Timestamp corresponding to the AOA measurement quantity;

[0434] LCS and GCS conversion parameters;

[0435] Fourth indication information, which is used to indicate the measurement quality of the AOA measurement quantity.

[0436] Optionally, the AOA measurement result is a measurement result obtained by processing a single time instance or a measurement result obtained by processing multiple time instances.

[0437] Optionally, the first device is associated with the LCS of the second device.

[0438] Optionally, the N first signals satisfy at least one of the following:

[0439] Using the same spatial transmission filter;

[0440] Using the same frequency point;

[0441] Using the same bandwidth;

[0442] Transmitted within a preset time period in the time domain;

[0443] Having the same initial phase;

[0444] Having the same phase adjustment factor;

[0445] Transmitted through the same resource;

[0446] Having different time domain positions;

[0447] Having the same frequency domain position.

[0448] Optionally, the communication interface is configured to implement at least one of the following:

[0449] Receive the N first signals sent by the second device through N ports of a resource;

[0450] Receive the N first signals sent by the second device through N repetitions of the same resource;

[0451] Receive N first signals sent by the second device through N resources.

[0452] Preferably, an embodiment of the present application further provides a signal processing device. The signal processing device is a first device and includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, it implements each process of the communication processing method embodiment described above and can achieve the same technical effect. To avoid repetition, it will not be elaborated here. Specifically, Figure 6 It is a schematic diagram of the hardware structure of a signal processing device according to an embodiment of the present application.

[0453] The signal processing device 600 includes, but is not limited to, at least some components such as a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610.

[0454] Those skilled in the art can understand that the signal processing device 600 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 610 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 6 The terminal structure shown does not limit 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.

[0455] It should be understood that in an embodiment of the present application, the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042. The graphics processor 6041 processes image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include a touch detection device and a touch controller. The other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0456] In the embodiment of this application, after the radio frequency unit 601 receives downlink data from an access network device, it can be transmitted to the processor 610 for processing. Additionally, the radio frequency unit 601 can send uplink data to a network-side device. Generally, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0457] The memory 609 can be used to store software programs or instructions and various data. The memory 609 mainly includes a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area can store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 609 can include a volatile memory or a non-volatile memory, or the memory 609 can include both a volatile and a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DRRAM). The memory 609 in the embodiment of this application includes, but is not limited to, these and any other suitable types of memories.

[0458] The processor 610 can include one or more processing units. Optionally, the processor 610 integrates an application processor and a modulation and demodulation processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and applications, etc., and the modulation and demodulation processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modulation and demodulation processor may not be integrated into the processor 610 either.

[0459] Among them, the radio frequency unit 601 is used to receive N first signals sent by a second device through at least two receiving antennas, where the N first signals respectively correspond to N transmitting antennas of the second device, and N is an integer greater than or equal to 2;

[0460] The processor is used to obtain the angle of arrival (AOA) through at least two of the N first signals.

[0461] Optionally, the interval between the transmitting antennas is M times the interval between the receiving antennas, and M is greater than or equal to 2.

[0462] Optionally, the processor is further used to:

[0463] Obtain first indication information, where the first indication information is used to indicate the association relationship of the N first signals or is used to indicate that the N first signals are associated signals.

[0464] Optionally, the first indication information is further used to indicate at least one of the following:

[0465] Signal identification information of the signals among the N first signals used to estimate the horizontal direction AOA;

[0466] Signal identification information of the signals among the N first signals used to estimate the vertical direction AOA;

[0467] The order of the N first signals, where the order corresponds to the position order of the N transmitting antennas corresponding to the N first signals.

[0468] Optionally, the order of the N first signals includes at least one of the following:

[0469] The horizontal direction order of the N first signals;

[0470] The vertical direction order of the N first signals.

[0471] Optionally, the processor is used to:

[0472] Obtain auxiliary information or a measurement request sent by the second device;

[0473] Among them, the auxiliary information or the measurement request includes the first indication information.

[0474] Optionally, the radio frequency unit 601 is further used to:

[0475] Send first information, where the first information is used to assist the second device in determining the transmission format of the first signal;

[0476] Among them, the first information includes at least one of the following: the receiving antenna information of the first device, first angle auxiliary information.

[0477] Optionally, the received antenna information includes at least one of the following:

[0478] The number of receiving antennas for measuring the AOA;

[0479] The spacing between receiving antennas;

[0480] The aperture of the receiving antenna;

[0481] The position distribution of the receiving antennas;

[0482] The conversion parameters between the local coordinate system LCS and the global coordinate system GCS of the first device.

[0483] Optionally, the radio frequency unit 601 is further configured to:

[0484] Receive request information for requesting the reporting of AOA measurement results.

[0485] Optionally, the request information includes at least one of the following:

[0486] Second indication information for indicating that the first device obtains the AOA based on at least two first signals;

[0487] Third indication information for indicating the association relationship of N first signals or for indicating that the N first signals are associated signals;

[0488] AOA accuracy requirement;

[0489] AOA reporting granularity;

[0490] AOA search window;

[0491] The number of AOA measurement results;

[0492] The coordinate system type corresponding to the AOA measurement result, where the coordinate system type includes: LCS or GCS;

[0493] The number of time instances of the first signal used to obtain the AOA measurement result.

[0494] Optionally, the radio frequency unit 601 is further configured to:

[0495] Receive second information, where the second information includes at least one of the following: second angle assistance information, the LCS conversion parameter of the second device;

[0496] where the second information is used for the first device to obtain the AOA based on at least two first signals.

[0497] Optionally, the radio frequency unit 601 is further configured to:

[0498] Send the AOA measurement result;

[0499] Among them, the AOA measurement result includes at least one of the following:

[0500] AOA measurement quantity;

[0501] Obtain the identification information of at least two first signals for the AOA measurement quantity;

[0502] Timestamp corresponding to the AOA measurement quantity;

[0503] LCS and GCS conversion parameters;

[0504] Fourth indication information, which is used to indicate the measurement quality of the AOA measurement quantity.

[0505] Optionally, the AOA measurement result is a measurement result obtained by processing a single time instance or a measurement result obtained by processing multiple time instances.

[0506] Optionally, the first device is associated with the LCS of the second device.

[0507] Optionally, the N first signals satisfy at least one of the following:

[0508] Use the same spatial transmission filter;

[0509] Use the same frequency point;

[0510] Use the same bandwidth;

[0511] Send within a preset time period in the time domain;

[0512] The initial phases are the same;

[0513] The phase adjustment factors are the same;

[0514] Send through the same resource;

[0515] The time domain positions are different;

[0516] The frequency domain positions are the same.

[0517] Optionally, the radio frequency unit 601 is used to implement at least one of the following:

[0518] Receive the N first signals sent by the second device through N ports of one resource;

[0519] Receive the N first signals sent by the second device through N repetitions of the same resource;

[0520] Receive the N first signals sent by the second device through N resources.

[0521] Preferably, an embodiment of the present application further provides a signal processing device. The signal processing device is the first device and includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the signal processing method embodiment described above is implemented, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0522] An embodiment of the present application further provides a readable storage medium. A program or instruction is stored on the computer-readable storage medium. When the program or instruction is executed by the processor, each process of the signal processing method embodiment described above is implemented, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0523] Wherein, the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc, etc.

[0524] As Figure 7 shown, the signal transmission device 700 of the embodiment of the present application is applied to the second device and includes:

[0525] A first transmission module 701, configured to transmit N first signals to the first device through N transmission antennas;

[0526] Wherein, N is an integer greater than or equal to 2.

[0527] Optionally, the interval between the transmission antennas is M times the interval between the receiving antennas of the first device, and M is greater than or equal to 2.

[0528] Optionally, the device further includes:

[0529] A fourth transmission module, configured to transmit first indication information, where the first indication information is used to indicate the association relationship of the N first signals, or is used to indicate that the N first signals are associated signals.

[0530] Optionally, the first indication information is further used to indicate at least one of the following:

[0531] The signal identification information of the N first signals for estimating the horizontal direction AOA;

[0532] The signal identification information of the N first signals for estimating the vertical direction AOA;

[0533] The order of the N first signals, where the order corresponds to the position order of the N transmission antennas corresponding to the N first signals.

[0534] Optionally, the order of the N first signals includes at least one of the following:

[0535] The order of N first signals in the horizontal direction;

[0536] The order of N first signals in the vertical direction.

[0537] Optionally, the fourth sending module is configured to:

[0538] Send auxiliary information or a measurement request;

[0539] Wherein, the auxiliary information or the measurement request includes the first indication information.

[0540] Optionally, the apparatus further includes:

[0541] A fourth receiving module, configured to receive first information, where the first information is used to assist the second device in determining the sending format of the first signal;

[0542] Wherein, the first information includes at least one of the following: receiving antenna information of the first device, first angle auxiliary information.

[0543] Optionally, the receiving antenna information includes at least one of the following:

[0544] The number of receiving antennas for measuring AOA;

[0545] The interval between receiving antennas;

[0546] The aperture of the receiving antenna;

[0547] The position distribution of the receiving antennas;

[0548] The conversion parameters between the local coordinate system LCS and the global coordinate system GCS of the first device.

[0549] Optionally, the apparatus further includes:

[0550] A fifth sending module, configured to send a request information, where the request information is used to request reporting of the AOA measurement result.

[0551] Optionally, the request information includes at least one of the following:

[0552] Second indication information, where the second indication information is used to indicate that the first device obtains the AOA based on at least two first signals;

[0553] Third indication information, where the third indication information is used to indicate the association relationship of N first signals, or is used to indicate that N first signals are associated signals;

[0554] AOA accuracy requirement;

[0555] AOA reporting granularity;

[0556] AOA search window;

[0557] Number of AOA measurement results;

[0558] Coordinate system type corresponding to the AOA measurement result, where the coordinate system type includes: LCS or GCS;

[0559] Number of time instances of the first signal used to obtain the AOA measurement result.

[0560] Optionally, the device further includes:

[0561] A sixth sending module, configured to send second information, where the second information includes at least one of the following: second angle assistance information, LCS conversion parameters of the second device;

[0562] Wherein, the second information is used for the first device to obtain AOA based on at least two first signals.

[0563] Optionally, the device further includes:

[0564] A fifth receiving module, configured to receive AOA measurement results;

[0565] Wherein, the AOA measurement result includes at least one of the following:

[0566] AOA measurement quantity;

[0567] Identification information of at least two first signals for obtaining the AOA measurement quantity;

[0568] Timestamp corresponding to the AOA measurement quantity;

[0569] LCS and GCS conversion parameters;

[0570] Fourth indication information, where the fourth indication information is used to indicate the measurement quality of the AOA measurement quantity.

[0571] Optionally, the AOA measurement result is a measurement result obtained by processing a single time instance or a measurement result obtained by processing multiple time instances.

[0572] Optionally, the first device is associated with the LCS of the second device.

[0573] Optionally, the N first signals satisfy at least one of the following:

[0574] Using the same spatial transmission filter;

[0575] Using the same frequency point;

[0576] Using the same bandwidth;

[0577] Transmitted within a preset time period in the time domain;

[0578] Having the same initial phase;

[0579] Having the same phase adjustment factor;

[0580] Transmitted through the same resource;

[0581] Having different time domain positions;

[0582] Having the same frequency domain position.

[0583] Optionally, the first transmission module 701 is configured to implement at least one of the following:

[0584] Transmitting N first signals to the first device through N ports of a resource;

[0585] Transmitting N first signals to the first device through N repetitions of the same resource;

[0586] Transmitting N first signals to the first device through N resources.

[0587] It should be noted that the apparatus embodiment corresponds to the above method, and all implementation manners in the above method embodiment are applicable to this apparatus embodiment and can achieve the same technical effect.

[0588] The signal transmission apparatus provided in the embodiment of the present application can implement Figure 4 each process implemented by the method embodiment and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0589] The embodiment of the present application further provides a signal transmission device. The signal transmission device is a second device and includes a processor and a communication interface. The communication interface is configured to transmit N first signals to a first device through N transmission antennas;

[0590] wherein, N is an integer greater than or equal to 2.

[0591] Optionally, the interval between the transmission antennas is M times the interval between the receiving antennas of the first device, and M is greater than or equal to 2.

[0592] Optionally, the communication interface is further configured to:

[0593] Transmit first indication information, where the first indication information is used to indicate the association relationship of the N first signals or is used to indicate that the N first signals are associated signals.

[0594] Optionally, the first indication information is further used to indicate at least one of the following:

[0595] The signal identification information of the N first signals for estimating the horizontal direction AOA;

[0596] The signal identification information of the N first signals for estimating the vertical direction AOA;

[0597] The order of the N first signals, where the order corresponds to the position order of the N transmit antennas corresponding to the N first signals.

[0598] Optionally, the order of the N first signals includes at least one of the following:

[0599] The order of the N first signals in the horizontal direction;

[0600] The order of the N first signals in the vertical direction.

[0601] Optionally, the communication interface is used for:

[0602] Sending auxiliary information or a measurement request;

[0603] Wherein, the auxiliary information or the measurement request includes the first indication information.

[0604] Optionally, the communication interface is further used for:

[0605] Receiving first information, where the first information is used to assist the second device in determining the transmission format of the first signal;

[0606] Wherein, the first information includes at least one of the following: the receiving antenna information of the first device, first angle auxiliary information.

[0607] Optionally, the receiving antenna information includes at least one of the following:

[0608] The number of receiving antennas for measuring AOA;

[0609] The interval between receiving antennas;

[0610] The aperture of the receiving antenna;

[0611] The position distribution of the receiving antennas;

[0612] The conversion parameters between the local coordinate system LCS and the global coordinate system GCS of the first device.

[0613] Optionally, the communication interface is further used for:

[0614] Sending request information, where the request information is used to request the reporting of AOA measurement results.

[0615] Optionally, the request information includes at least one of the following:

[0616] Second indication information, which is used to indicate that the first device obtains the AOA based on at least two first signals;

[0617] Third indication information, which is used to indicate the association relationship of N first signals or to indicate that the N first signals are associated signals;

[0618] AOA accuracy requirement;

[0619] AOA reporting granularity;

[0620] AOA search window;

[0621] The number of AOA measurement results;

[0622] The type of coordinate system corresponding to the AOA measurement result, where the coordinate system type includes: LCS or GCS;

[0623] The number of time instances of the first signal used to obtain the AOA measurement result.

[0624] Optionally, the communication interface is further configured to:

[0625] Send second information, where the second information includes at least one of the following: second angle assistance information, LCS conversion parameters of the second device;

[0626] Wherein, the second information is used for the first device to obtain the AOA based on at least two first signals.

[0627] Optionally, the communication interface is further configured to:

[0628] Receive the AOA measurement result;

[0629] Wherein, the AOA measurement result includes at least one of the following:

[0630] AOA measurement quantity;

[0631] Identification information of at least two first signals for obtaining the AOA measurement quantity;

[0632] Timestamp corresponding to the AOA measurement quantity;

[0633] LCS and GCS conversion parameters;

[0634] Fourth indication information, which is used to indicate the measurement quality of the AOA measurement quantity.

[0635] Optionally, the AOA measurement result is a measurement result obtained by processing a single time instance or a measurement result obtained by processing multiple time instances.

[0636] Optionally, the first device is associated with the LCS of the second device.

[0637] Optionally, the N first signals satisfy at least one of the following:

[0638] Use the same spatial transmission filter;

[0639] Use the same frequency point;

[0640] Use the same bandwidth;

[0641] Be transmitted within a preset time period in the time domain;

[0642] Have the same initial phase;

[0643] Have the same phase adjustment factor;

[0644] Be transmitted through the same resource;

[0645] Have different time domain positions;

[0646] Have the same frequency domain position.

[0647] Optionally, the communication interface is used to implement at least one of the following:

[0648] Send N first signals to the first device through N ports of one resource;

[0649] Send N first signals to the first device through N repetitions of the same resource;

[0650] Send N first signals to the first device through N resources.

[0651] Specifically, an embodiment of the present application further provides a signal transmission device, and the signal transmission device is a second device. As Figure 8 shown, the signal transmission device 800 includes: an antenna 801, a radio frequency device 802, a baseband device 803, a processor 804, and a memory 805. The antenna 801 is connected to the radio frequency device 802. In the uplink direction, the radio frequency device 802 receives information through the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be sent and sends it to the radio frequency device 802. After processing the received information, the radio frequency device 802 sends it out through the antenna 801.

[0652] The method executed by the network side device in the above embodiments can be implemented in the baseband device 803, and the baseband device 803 includes a baseband processor.

[0653] The baseband device 803 may, for example, include at least one baseband board, and multiple chips are provided on the baseband board, such as Figure 8As shown, one of the chips, for example, a baseband processor, is connected to the memory 805 through a bus interface to call the program in the memory 805 and execute the network device operations shown in the above method embodiments.

[0654] The network-side device may further include a network interface 806, which is, for example, a common public radio interface (CPRI).

[0655] Specifically, the signal transmission device 800 according to the embodiments of the present application further includes: instructions or programs stored on the memory 805 and executable on the processor 804. The processor 804 calls the instructions or programs in the memory 805 to execute Figure 6 the methods executed by the modules shown, and achieve the same technical effects. To avoid repetition, they are not elaborated here.

[0656] The embodiments of the present application further provide a readable storage medium, on which programs or instructions are stored. When the programs or instructions are executed by a processor, the various processes of the above signal transmission method embodiments are implemented, and the same technical effects can be achieved. To avoid repetition, they are not elaborated here.

[0657] Wherein, the processor is the processor in the access network device described in the above embodiments. The readable storage medium may be non-volatile or non-transient. The readable storage medium may include computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc.

[0658] Optionally, as Figure 9 shown, the embodiments of the present application further provide a communication device 900, including a processor 901 and a memory 902. Programs or instructions that can run on the processor 901 are stored on the memory 902. For example, when the communication device 900 is the first device, when the programs or instructions are executed by the processor 901, the various steps of the above signal processing method embodiments are implemented, and the same technical effects can be achieved. When the communication device 900 is the second device, when the programs or instructions are executed by the processor 901, the various steps of the above signal transmission method embodiments are implemented, and the same technical effects can be achieved. To avoid repetition, they are not elaborated here.

[0659] The embodiments of the present application further provide 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 signal processing method or signal transmission method embodiments, and the same technical effects can be achieved. To avoid repetition, they are not elaborated here.

[0660] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0661] The embodiments of the present application further provide a computer program / program product. The computer program / program product is stored in a storage medium and is executed by at least one processor to implement the various processes of the signal processing method or the signal transmission method embodiments described above, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0662] The embodiments of the present application further provide a communication system, including: a first device and a second device. The first device can be used to execute the steps of the above-mentioned signal processing method, and the second device can be used to execute the steps of the above-mentioned signal transmission processing method.

[0663] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0664] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in the various embodiments of the present application.

[0665] The embodiments of the present application have been described above with reference to the drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the purpose of the present application and the scope protected by the claims, can also make many forms of embodiments, and these embodiments are all within the protection scope of the present application.

Claims

1. A signal processing method, characterized in that, Including: The first device receives N first signals sent by the second device through at least two receiving antennas. The N first signals respectively correspond to N transmitting antennas of the second device, and N is an integer greater than or equal to 2. The first device obtains the Angle of Arrival (AOA) through at least two of the N first signals.

2. The method according to claim 1, characterized in that, The spacing between the transmitting antennas is M times the spacing between the receiving antennas, where M is greater than or equal to 2.

3. The method according to claim 1 or 2, characterized in that, Also including: The first device obtains first indication information, which is used to indicate the association relationship of the N first signals, or to indicate that the N first signals are associated signals.

4. The method according to claim 3, characterized in that, The first indication information is further used to indicate at least one of the following: Signal identification information of the signals among the N first signals for estimating the horizontal direction AOA; Signal identification information of the signals among the N first signals for estimating the vertical direction AOA; The order of the N first signals, where the order corresponds to the position order of the N transmitting antennas corresponding to the N first signals.

5. The method according to claim 4, characterized in that, The order of the N first signals includes at least one of the following: The horizontal direction order of the N first signals; The vertical direction order of the N first signals.

6. The method according to claim 3, wherein Obtaining the first indication information sent by the second device includes: The first device obtains auxiliary information or a measurement request sent by the second device; Wherein, the first indication information is included in the auxiliary information or the measurement request.

7. The method according to any one of claims 1-6, characterized in that, Also including: The first device sends first information, which is used to assist the second device in determining the transmission format of the first signal; Wherein, the first information includes at least one of the following: receiving antenna information of the first device, first angle auxiliary information.

8. The method according to claim 7, wherein The receiving antenna information includes at least one of the following: The number of receiving antennas for measuring AOA; The spacing between receiving antennas; The aperture of the receiving antenna; The position distribution of the receiving antennas; Conversion parameters between the local coordinate system (LCS) and the global coordinate system (GCS) of the first device.

9. The method according to any one of claims 1-8, characterized in that, Also including: The first device receives request information, which is used to request reporting of the AOA measurement result.

10. The method according to claim 9, wherein The request information includes at least one of the following: Second indication information, which is used to indicate that the first device obtains AOA based on at least two first signals; Third indication information, which is used to indicate the association relationship of the N first signals, or to indicate that the N first signals are associated signals; AOA accuracy requirement; AOA reporting granularity; AOA search window; The number of AOA measurement results; The coordinate system type corresponding to the AOA measurement result, where the coordinate system type includes: LCS or GCS; The number of time instances of the first signals used to obtain the AOA measurement result.

11. The method according to any one of claims 1 to 10, characterized in that Also including: The first device receives second information, which includes at least one of the following: second angle auxiliary information, LCS conversion parameters of the second device; Wherein, the second information is used for the first device to obtain AOA based on at least two first signals.

12. The method according to any one of claims 1-11, characterized in that, Also including: The first device sends the AOA measurement result; Wherein, the AOA measurement result includes at least one of the following: AOA measurement quantity; Obtain the identification information of at least two first signals of the AOA measurement quantity; The timestamp corresponding to the AOA measurement quantity; LCS and GCS conversion parameters; Fourth indication information, which is used to indicate the measurement quality of the AOA measurement quantity.

13. The method according to claim 12, wherein The AOA measurement result is the measurement result obtained by processing a single time instance or the measurement result obtained by processing multiple time instances.

14. The method according to any one of claims 1 to 13, characterized in that The first device is associated with the LCS of the second device.

15. The method according to any one of claims 1-14, characterized in that, The N first signals satisfy at least one of the following: Use the same spatial transmission filter; Use the same frequency point; Use the same bandwidth; Be transmitted within a preset time period in the time domain; Have the same initial phase; Have the same phase adjustment factor; Be transmitted through the same resource; Have different time domain positions; Have the same frequency domain position.

16. The method according to any one of claims 1 to 15, characterized in that, The receiving second device sends N first signals, including at least one of the following: The first device receives the N first signals sent by the second device through N ports of a resource; The first device receives the N first signals sent by the second device through N repetitions of the same resource; The first device receives the N first signals sent by the second device through N resources.

17. A signal transmission method, characterized in that, Include: The second device sends N first signals to the first device through N transmitting antennas; Wherein, N is an integer greater than or equal to 2.

18. The method according to claim 17, wherein The interval between the transmitting antennas is M times the interval between the receiving antennas of the first device, and M is greater than or equal to 2.

19. The method according to claim 17 or 18, characterized in that Further include: The second device sends first indication information, which is used to indicate the association relationship of the N first signals, or is used to indicate that the N first signals are associated signals.

20. The method according to claim 19, characterized in that, The first indication information is further used to indicate at least one of the following: The signal identification information of the first signals among the N first signals for estimating the horizontal direction AOA; The signal identification information of the first signals among the N first signals for estimating the vertical direction AOA; The order of the N first signals, and the order corresponds to the position order of the N transmitting antennas corresponding to the N first signals.

21. The method according to claim 20, wherein The order of the N first signals includes at least one of the following: The order of the N first signals in the horizontal direction; The order of the N first signals in the vertical direction.

22. The method according to claim 19, wherein The sending of the first indication information includes: The second device sends auxiliary information or a measurement request; Wherein, the auxiliary information or the measurement request includes the first indication information.

23. The method according to any one of claims 17-22, characterized in that, Further include: The second device receives first information, which is used to assist the second device in determining the transmission format of the first signal; Wherein, the first information includes at least one of the following: the receiving antenna information of the first device, first angle auxiliary information.

24. The method according to claim 23, wherein The receiving antenna information includes at least one of the following: The number of receiving antennas for measuring AOA; The interval between the receiving antennas; The aperture of the receiving antenna; The position distribution of the receiving antennas; The conversion parameters between the local coordinate system LCS and the global coordinate system GCS of the first device.

25. The method according to any one of claims 17 - 24, characterized in that Further include: The second device sends request information, which is used to request the reporting of the AOA measurement result.

26. The method according to claim 25, wherein The request information includes at least one of the following: Second indication information, where the second indication information is used to instruct the first device to obtain the AOA based on at least two first signals; Third indication information, where the third indication information is used to indicate the association relationship of N first signals, or is used to indicate that the N first signals are associated signals; AOA accuracy requirement; AOA reporting granularity; AOA search window; Number of AOA measurement results; Type of coordinate system corresponding to the AOA measurement result, where the type of coordinate system includes: LCS or GCS; Number of time instances of the first signals used to obtain the AOA measurement result.

27. The method according to any one of claims 17-26, characterized in that, Further includes: The second device sends second information, where the second information includes at least one of the following: second angle assistance information, LCS conversion parameters of the second device; Wherein, the second information is used for the first device to obtain the AOA based on at least two first signals.

28. The method according to any one of claims 17-27, characterized in that, Further includes: The second device receives the AOA measurement result; Wherein, the AOA measurement result includes at least one of the following: AOA measurement quantity; Identification information of at least two first signals for obtaining the AOA measurement quantity; Time stamp corresponding to the AOA measurement quantity; LCS and GCS conversion parameters; Fourth indication information, where the fourth indication information is used to indicate the measurement quality of the AOA measurement quantity.

29. The method according to claim 28, wherein The AOA measurement result is a measurement result obtained by processing a single time instance or a measurement result obtained by processing multiple time instances.

30. The method according to any one of claims 17 - 29, characterized in that, The LCS of the first device is associated with that of the second device.

31. The method according to any one of claims 17 - 30, characterized in that, The N first signals satisfy at least one of the following: Use the same spatial transmission filter; Use the same frequency point; Use the same bandwidth; Be sent within a preset time period in the time domain; Have the same initial phase; Have the same phase adjustment factor; Be sent through the same resource; Have different time domain positions; Have the same frequency domain position.

32. The method according to any one of claims 17-31, characterized in that, The sending of N first signals to the first device includes at least one of the following: The second device sends N first signals to the first device through N ports of one resource; The second device sends N first signals to the first device through N repetitions of the same resource; The second device sends N first signals to the first device through N resources.

33. A signal processing device is applied to a first device, characterized in that, Includes: A first receiving module, configured to receive N first signals sent by a second device through at least two receiving antennas, where the N first signals respectively correspond to N transmitting antennas of the second device, and N is an integer greater than or equal to 2; A first obtaining module, configured to obtain the angle of arrival AOA through at least two of the N first signals.

34. The device according to claim 33, characterized in that, Further includes: A second obtaining module, configured to obtain first indication information, where the first indication information is used to indicate the association relationship of N first signals, or is used to indicate that the N first signals are associated signals.

35. The device according to claim 33 or 34, characterized in that The first receiving module is configured to implement at least one of the following: Receive the N first signals sent by the second device through N ports of one resource; Receive the N first signals sent by the second device through N repetitions of the same resource; Receive the N first signals sent by the second device through N resources.

36. A signal processing device, which is a first device, characterized in that, Comprising a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the steps of the signal processing method according to any one of claims 1 to 16 are implemented.

37. A signal transmission device is applied to a second device, characterized in that, Comprising: A first sending module, configured to send N first signals to a first device through N sending antennas; Wherein, N is an integer greater than or equal to 2.

38. The device according to claim 37, characterized in that, The first sending module is configured to implement at least one of the following: Send N first signals to the first device through N ports of one resource; Send N first signals to the first device through N repetitions of the same resource; Send N first signals to the first device through N resources.

39. A signal transmission device, the signal transmission device being a second device, characterized in that, Comprising a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the steps of the signal transmission method according to any one of claims 17 to 32 are implemented.

40. A readable storage medium, characterized in that, Programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by a processor, the steps of the signal processing method according to any one of claims 1-16 or the steps of the signal transmission method according to any one of claims 17-32 are implemented.

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