CN117499979A

CN117499979A - Target detection method and device for phased array antenna

Info

Publication number: CN117499979A
Application number: CN202311447133.9A
Authority: CN
Inventors: 刘琳; 李飞; 于洋
Original assignee: Weihai Tiantuo Hechuang Electronic Engineering Co ltd
Current assignee: Weihai Tiantuo Hechuang Electronic Engineering Co ltd
Priority date: 2023-11-02
Filing date: 2023-11-02
Publication date: 2024-02-02

Abstract

The invention provides a target detection method and device of a phased array antenna, which belong to the technical field of communication and are used for further improving the perception precision through the auxiliary perception of wave beams. The method comprises the following steps: under the condition that the terminal moves on the target road, the terminal uses a first antenna panel of the terminal to send a resource request message to the access network equipment, wherein the resource request message is used for requesting a time-frequency resource used by executing a sensing operation on the target road through a second antenna panel of the terminal; the method comprises the steps that a terminal receives a resource response message returned by access network equipment aiming at a resource request message, wherein the resource response message carries information for indicating a first target time-frequency resource, and the first target time-frequency resource is used by executing a sensing operation on a target road through a second antenna panel of the terminal; and the terminal uses a second antenna panel of the terminal to execute the sensing operation on the target road on the first target time-frequency resource.

Description

Target detection method and device for phased array antenna

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for detecting a target of a phased array antenna.

Background

Intelligent driving is a technology for realizing unmanned driving based on artificial intelligence technology. The vehicle can autonomously sense the surrounding environment by using sensors such as cameras, lidar and other devices, such as identifying road signs, traffic lights and other vehicles, make corresponding driving decisions and then process the information by using a computer algorithm, so that the vehicle can be automatically controlled. The intelligent driving technology aims to solve the problems of traffic jam, traffic accident reduction, road utilization rate improvement and the like. The most widely used scheme is a laser radar at present, wherein the laser radar is a sensor commonly used for intelligent driving, and the sensor detects the surrounding environment by emitting laser beams, generates a high-precision three-dimensional map and provides data support for vehicle positioning and path planning.

However, in future scenarios, the requirements on the perceived accuracy may be higher, so how to further improve the perceived accuracy is a hot problem of current research in the technology of existing lidar.

Disclosure of Invention

The embodiment of the invention provides a target detection method and device for a phased array antenna, which are used for further improving the perception precision through the auxiliary perception of wave beams.

In order to achieve the above purpose, the invention adopts the following technical scheme:

in a first aspect, a method for detecting an object of a phased array antenna is provided, the method comprising: under the condition that the terminal moves on the target road, the terminal uses a first antenna panel of the terminal to send a resource request message to the access network equipment, wherein the resource request message is used for requesting a time-frequency resource used by executing a sensing operation on the target road through a second antenna panel of the terminal; the method comprises the steps that a terminal receives a resource response message returned by access network equipment aiming at a resource request message, wherein the resource response message carries information for indicating a first target time-frequency resource, and the first target time-frequency resource is used by executing a sensing operation on a target road through a second antenna panel of the terminal; and the terminal uses a second antenna panel of the terminal to execute the sensing operation on the target road on the first target time-frequency resource.

In one possible design, the terminal performs a sensing operation on the target road on the first target time-frequency resource using a second antenna panel of the terminal, including: the terminal uses a second antenna panel of the terminal to send a first wave beam along the terminal in the running direction of a target road on a first target time-frequency resource; the terminal receives a first echo of a first wave beam on a first target time-frequency resource by using a second antenna panel of the terminal; and the terminal determines the perception result of the first target object on the target road according to the first echo.

Optionally, the first target time-frequency resource includes a first target transmission time-frequency resource of each period, the first target transmission time-frequency resource includes M first resource block groups, time domain positions of the M first resource block groups are the same, frequency domain positions of the M first resource block groups are different, a last resource block of the i-th first resource block group in the M first resource block groups and a first resource block of the i+1th first resource block group in the M first resource block groups are separated by at least one subcarrier, i is any integer from 1 to M-1, M is an integer greater than 1, each first resource block group in the M first resource block groups includes a plurality of resource blocks, the terminal uses the second antenna panel to transmit a corresponding first beam on the j-th first resource block group in the M first resource block groups, directions of the M first beams are different, and j is any integer from 1 to M.

Further, the antenna array of the second antenna panel is divided into M first phased array antenna subarrays, and the terminal uses a j first phased array antenna subarray in the M first phased array antenna subarrays to transmit a j first beam in the M first beams in a j first resource block group in the M first resource block groups; according to the sequence that indexes of M first beams are sequentially increased, the included angle between the first beam indicated by the indexes of the first beams and the normal direction of the second antenna panel is firstly reduced and then increased, wherein if M is an odd number, the included angle between the M+12th first beam in the M first beams and the normal direction is 0; if M is an even number, the included angles between the M/2+1 th first beam and the M/2-1 th first beam in the M first beams and the normal direction are the smallest; if the included angle between the first beam of the M first beams and the normal direction is larger, the number of resource blocks included in one resource block corresponding to the M first resource block groups of the first beam is larger.

Optionally, the first target time-frequency resource further includes a first target receiving time-frequency resource of each period, the first target transmitting time-frequency resource includes M second resource block groups, the time domain positions of the M second resource block groups are the same, the frequency domain positions of the M second resource block groups are different, and at least one subcarrier is spaced between a last resource block of the i-th second resource block group in the M second resource block groups and a first resource block of the i+1th second resource block group in the M second resource block groups; the frequency domain position of the jth second resource block group in the M second resource block groups is the same as the frequency domain position of the jth first resource block group in the M first resource block groups, each second resource block group in the M second resource block groups comprises a plurality of resource blocks, and on the same time slot, the number of the resource blocks contained in the jth second resource block group in the M second resource block groups is the same as the number of the resource blocks contained in the jth first resource block group in the M first resource block groups; the terminal uses a second antenna panel to detect whether a first echo of a j-th first beam in M first beams is received on the j-th second resource block group in M second resource block groups; under the condition that the same subcarrier is arranged and the subcarrier interval is 60kHz, the j second resource block group in the M second resource block groups is adjacent to the time domain position of the j first resource block group in the M first resource block groups; the j-th second resource block group in the M second resource block groups comprises 4 resource blocks.

Further, the terminal detects whether a first echo of a j first beam of the M first beams is received by using a j first phased array antenna subarray of the M first phased array antenna subarrays in a j second resource block group of the M second resource block groups.

In one possible design, the resource response message further carries an identity of the RIS and location information of the RIS, and the resource response message carries information for indicating a second target time-frequency resource, where the second target time-frequency resource is a time-frequency resource used by the first antenna panel to perform a sensing operation on the target road; the method further comprises the steps of: the terminal sends a second beam to the position of the RIS on a second target time-frequency resource by using the first line panel according to the position information of the RIS, and the RIS is used for reflecting the second beam to the front of the first beam; the terminal receives a second echo of a second beam from the RIS on a second target time-frequency resource by using the first antenna panel; and the terminal determines a perception result of a second target object on the target road according to the second echo.

Optionally, the second target time-frequency resource includes a second target transmission time-frequency resource of each period, and the second target transmission time-frequency resource includes M first resource block groups; the terminal uses the first antenna panel to send a corresponding second beam on the j first resource block group in the M first resource block groups, M second beams are continuous, the directions of the M second beams are the same and all point to the RIS, and the directions of the M second beams reflected by the RIS are different. The antenna array of the first antenna panel is divided into M second phased array antenna subarrays, and the terminal uses the j second phased array antenna subarrays in the M second phased array antenna subarrays to transmit the j second beam in the M second beams in the j first resource block groups in the M first resource block groups.

Further, the second target time-frequency resource further includes a second target receiving time-frequency resource of each period, the second target receiving time-frequency resource includes M third resource block groups, the time domain positions of the M third resource block groups are the same, the frequency domain positions of the M third resource block groups are different, and at least one subcarrier is spaced between a last resource block of the i-th third resource block group in the M third resource block groups and a first resource block of the i+1th second resource block group in the M third resource block groups; the frequency domain position of the jth third resource block group in the M third resource block groups is the same as the frequency domain position of the jth first resource block group in the M first resource block groups, each third resource block group in the M third resource block groups comprises a plurality of resource blocks, and on the same time slot, the number of the resource blocks contained in the jth third resource block group in the M third resource block groups is the same as the number of the resource blocks contained in the jth first resource block group in the M first resource block groups; the terminal uses the first antenna panel to detect whether a second echo of a j second beam in M second beams is received on a j second resource block group in M third resource block groups; under the condition that the same subcarrier is arranged and the subcarrier interval is 60kHz, the time domain position of the jth third resource block group in the M third resource block groups is separated from the time domain position of the jth first resource block group in the M first resource block groups by 4 time slots; the j-th third resource block group in the M third resource block groups comprises 8 resource blocks. And the terminal detects whether a second echo of a j second wave beam in M second wave beams is received by using a j second phased array antenna subarray in M second phased array antenna subarrays in a j second resource block group in M third resource block groups.

In a second aspect, there is provided an object detection device for a phased array antenna, the device being for use in a terminal, the device being configured to: under the condition that the terminal moves on the target road, the terminal uses a first antenna panel of the terminal to send a resource request message to the access network equipment, wherein the resource request message is used for requesting a time-frequency resource used by executing a sensing operation on the target road through a second antenna panel of the terminal; the method comprises the steps that a terminal receives a resource response message returned by access network equipment aiming at a resource request message, wherein the resource response message carries information for indicating a first target time-frequency resource, and the first target time-frequency resource is used by executing a sensing operation on a target road through a second antenna panel of the terminal; and the terminal uses a second antenna panel of the terminal to execute the sensing operation of the target road on the first target time-frequency resource.

In one possible design, the apparatus is configured to: the terminal uses a second antenna panel of the terminal to send a first wave beam along the terminal in the running direction of a target road on a first target time-frequency resource; the terminal receives a first echo of a first wave beam on a first target time-frequency resource by using a second antenna panel of the terminal; and the terminal determines the perception result of the first target object on the target road according to the first echo.

In a third aspect, there is provided a communication apparatus comprising: a processor and a memory; the memory is for storing a computer program which, when executed by the processor, causes the communication device to perform the method of the first aspect.

In a fourth aspect, there is provided a computer-readable storage medium comprising: computer programs or instructions; the computer program or instructions, when run on a computer, cause the computer to perform the method of the first aspect.

In a fifth aspect, there is provided a computer program product comprising a computer program or instructions which, when run on a computer, cause the computer to perform the method of the first aspect.

In summary, the method and the device have the following technical effects:

under the condition that the terminal uses the laser radar to perform sensing, the terminal can also assist sensing through the wave beam, for example, the terminal can request the access network equipment to configure the first target time-frequency resource, so that the sensing operation on the target road is performed on the first target time-frequency resource by using the second antenna panel of the terminal, and the sensing precision is further improved.

Drawings

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention;

Fig. 2 is a flow chart of a target detection method of a phased array antenna according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present invention

Detailed Description

The technical scheme of the invention will be described below with reference to the accompanying drawings.

The technical solution of the embodiment of the present invention may be applied to various communication systems, such as a wireless network (Wi-Fi) system, a vehicle-to-arbitrary object (vehicle to everything, V2X) communication system, an inter-device (D2D) communication system, a car networking communication system, a fourth generation (4th generation,4G) mobile communication system, such as a long term evolution (long term evolution, LTE) system, a worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, a fifth generation (5th generation,5G) system, such as a new radio, NR) system, and a future communication system.

The present invention will present various aspects, embodiments, or features about a system that may include a plurality of devices, components, modules, etc. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, combinations of these schemes may also be used.

In addition, in the embodiments of the present invention, words such as "exemplary," "for example," and the like are used to indicate an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.

In the embodiment of the present invention, "information", "signal", "message", "channel", and "signaling" may be used in a mixed manner, and it should be noted that the meaning of the expression is matched when the distinction is not emphasized. "of", "corresponding" and "corresponding" are sometimes used in combination, and it should be noted that the meanings to be expressed are matched when the distinction is not emphasized. Furthermore, references to "/" of embodiments of the present invention may be used to indicate an "or" relationship. In addition, the embodiment of the present invention refers to sending to a, or sending to a, etc., and refers to sending behavior with a as a destination address, which may be directly or indirectly sending to a. Similarly, the embodiment of the present invention refers to receiving from a or from a, etc., and refers to receiving behavior with a as a source address, which may be directly or indirectly received from a.

The network architecture and the service scenario described in the embodiments of the present invention are for more clearly describing the technical solution of the embodiments of the present invention, and do not constitute a limitation on the technical solution provided by the embodiments of the present invention, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present invention is applicable to similar technical problems.

To facilitate understanding of the embodiments of the present invention, a communication system suitable for use in the embodiments of the present invention will be described in detail with reference to the communication system shown in fig. 1. Fig. 1 is a schematic diagram of a communication system to which a target detection method of a phased array antenna according to an embodiment of the present invention is applicable.

Referring to fig. 1, an embodiment of the present invention provides a communication system, which may include: a terminal or an access network device.

The terminal may be a terminal having a wireless transceiving function or a chip system provided in the terminal. The terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The terminal device in the embodiment of the present invention may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a vehicle-mounted terminal, an RSU with a terminal function, or the like. The terminal device of the present invention may also be an in-vehicle module, an in-vehicle component, an in-vehicle chip, or an in-vehicle unit that is built in a vehicle as one or more components or units, and the vehicle may implement the method provided by the present invention through the in-vehicle module, the in-vehicle component, the in-vehicle chip, or the in-vehicle unit. The communication between terminals may be a communication between terminals, which may also be referred to as side-by-side communication.

The access network device may be AN Access Network (AN) device, or may be referred to as a radio access network device (radio access network, RAN) device. The RAN device may provide an access function for the terminal device, and is responsible for radio resource management, quality of service (quality of service, qoS) management, data compression, encryption, and other functions on the air interface side. The RAN device may comprise a 5G, such as a gNB in an NR system, or one or a group of base stations (including multiple antenna panels) in the 5G, or may also be a network node, such as a baseband unit (building base band unit, BBU), or a Centralized Unit (CU) or a Distributed Unit (DU), an RSU with base station functionality, or a wired access gateway, constituting a gNB, a transmission point (transmission and reception point, TRP or transmission point, TP), or a transmission measurement function (transmission measurement function, TMF), or a core network element of the 5G. Alternatively, the RAN device may also include an Access Point (AP) in a wireless fidelity (wireless fidelity, wiFi) system, a wireless relay node, a wireless backhaul node, various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, wearable devices, vehicle devices, and so on. Alternatively, the RAN device may also include a next generation mobile communication system, such as a 6G access network device, such as a 6G base station, or in the next generation mobile communication system, the network device may also have other naming manners, which are covered by the protection scope of the embodiments of the present invention, which is not limited in any way.

The terminal is provided with a first antenna panel and a second antenna panel.

The first antenna panel may be formed of matrix arranged antenna elements, i.e. the antenna array of the first antenna panel is divided into M first phased array antenna sub-arrays, in other words, by meshing the matrix arranged first antenna panel, the antenna elements comprised by each network form one logical antenna array. Similarly, the antenna array of the second antenna panel is divided into M first phased array antenna subarrays. M is an integer greater than 1. Each first phased array antenna subarray may employ beamforming techniques to independently transmit beams that may carry signals for perception. Similarly, each second phased array antenna subarray may transmit beams independently using beamforming techniques.

The beam is specifically described below.

A beam refers to a special transmitting or receiving effect with directivity formed by a transmitter or receiver of a network device or terminal through an antenna array, similar to a beam formed by a flashlight converging light into one direction. The signal is sent and received in a beam mode, so that the transmission data distance of the signal can be effectively improved. The beams used for communication between terminals may also be referred to as sidelobes.

The beam may be a wide beam, or a narrow beam, or other type of beam. The technique of forming the beam may be a beamforming technique or other technique. The beamforming technique may specifically be a digital beamforming technique, an analog beamforming technique, or a hybrid digital/analog beamforming technique, etc.

The beams generally correspond to resources. For example, when performing beam measurement, the network device measures different beams through different resources, the terminal feeds back the measured resource quality, and the network device can know the quality of the corresponding beam. During data transmission, the beam can also be indicated by its corresponding resource. For example, the network device indicates a transmission configuration indication-state (state) through a transmission configuration number (transmission configuration index, TCI) field in downlink control information (downlink control information, DCI), and the terminal determines a beam corresponding to the reference resource according to the reference resource included in the TCI-state.

In a communication protocol, the beams may be characterized specifically as digital beams, analog beams, spatial filters (spatial domain filter), spatial filters (spatial filters), spatial parameters (spatial parameter), TCI-states, etc. The beam used to transmit the signal may be referred to as a transmit beam (transmission beam, or Tx beam), spatial transmit filter (spatial domain transmission filter), spatial transmit filter (spatial transmission filter), spatial transmit parameters (spatial domain transmission parameter), spatial transmit parameters (spatial transmission parameter), and the like. The beams used to receive the signals may be referred to as receive beams (or Rx beams), spatial receive filters (spatial domain reception filter), spatial receive filters (spatial reception filter), spatial receive parameters (spatial domain reception parameter), spatial receive parameters (spatial reception parameter), and the like.

The terminal can adopt A, B and B receiving modes to sense, or the terminal can spontaneously self. It will be appreciated that spontaneous self-collection is described below as an example.

Fig. 2 is a flow chart of a target detection method of a phased array antenna according to an embodiment of the present invention. The target detection method of the phased array antenna is suitable for the communication system and is mainly executed by a terminal of the phased array antenna.

As shown in fig. 2, the flow of the method is specifically as follows:

s201, when the terminal moves on the target road, the terminal uses the first antenna panel of the terminal to send a resource request message to the access network device.

The resource request message may carry an identification of the terminal for requesting time-frequency resources used for performing the perception operation on the target road through the second antenna panel of the terminal. The terminal can sense the application scene of the terminal, such as the terminal starts the navigation application, or the terminal moves along the regular route, so as to determine that the terminal moves on the target road. The resource request message may specifically be an RRC message, such as a newly defined RCC message, unlike existing RRC messages.

S202, the terminal receives a resource response message returned by the access network device for the resource request message.

The resource response message may in particular also be an RRC message, such as a newly defined RCC message, unlike existing RRC messages. The resource response message carries information indicating the first target time-frequency resource. The first target time-frequency resource is a time-frequency resource used by the second antenna panel of the terminal to perform a perception operation on the target road.

And if the access network equipment receives the resource request message, configuring first target time-frequency resources for the terminal, optionally, second target time-frequency resources, and then sending a resource response message.

S203, the terminal uses a second antenna panel of the terminal to execute the sensing operation on the target road on the first target time-frequency resource.

The terminal can use a second antenna panel of the terminal to send a first wave beam on a first target time-frequency resource along the terminal in the running direction of a target road; the terminal receives a first echo of the first beam on a first target time-frequency resource using a second antenna panel of the terminal. Thus, the terminal can determine the sensing result of the first target object on the target road according to the first echo, such as the distance between the first target object and the terminal, the speed of the first target object, and the like.

The following is a specific description of S202 to S203.

The first target time-frequency resource may comprise a first target transmit time-frequency resource for each cycle. The first target sending time-frequency resource comprises M first resource block groups, the time domain positions of the M first resource block groups are the same, the frequency domain positions of the M first resource block groups are different, at least one subcarrier is spaced between the last resource block of the ith first resource block group in the M first resource block groups and the first resource block of the (i+1) th first resource block group in the M first resource block groups, so that interference caused by frequency band leakage is avoided, and any integer from 1 to M-1 is taken as i. Each first resource block group in the M first resource block groups comprises a plurality of resource blocks, the terminal uses the second antenna panel to send a corresponding first wave beam on the j first resource block group in the M first resource block groups, the M first wave beams are continuous altogether, the directions of the M first wave beams are different, and j is any integer from 1 to M. Frequency division multiplexing can be implemented in this way to reduce perceived latency.

Further, the antenna array of the second antenna panel is divided into M first phased array antenna subarrays, and the terminal uses a j first phased array antenna subarray of the M first phased array antenna subarrays to transmit a j first beam of the M first beams in a j first resource block group of the M first resource block groups. According to the sequence that the indexes of the M first beams sequentially increase, the included angle between the first beam indicated by the indexes of the first beams and the normal direction of the second antenna panel is firstly reduced and then increased. The order in which the indexes of the M first beams sequentially increase may be the 1 st first beam, the 2 nd first beam, the 3 rd first beam, and so on, up to the M first beam. For example, if M is an odd number, the included angle between the m+1/2 th first beam of the M first beams and the normal direction is 0; if M is an even number, the included angles between the M/2+1 th first beam and the M/2-1 th first beam in the M first beams and the normal direction are all the smallest, or if the included angle between the first beam in the M first beams and the normal direction is larger, the number of resource blocks included in one resource block corresponding to the M first resource block groups by the first beam is larger.

The first target time-frequency resources may also include first target receive time-frequency resources for each period. The first target sending time-frequency resource comprises M second resource block groups, the time domain positions of the M second resource block groups are the same, the frequency domain positions of the M second resource block groups are different, and at least one subcarrier is spaced between the last resource block of the ith second resource block group in the M second resource block groups and the first resource block of the (i+1) th second resource block group in the M second resource block groups so as to avoid interference generated by frequency band leakage; the frequency domain position of the jth second resource block group in the M second resource block groups is the same as the frequency domain position of the jth first resource block group in the M first resource block groups, each second resource block group in the M second resource block groups comprises a plurality of resource blocks, and on the same time slot, the number of the resource blocks contained in the jth second resource block group in the M second resource block groups is the same as the number of the resource blocks contained in the jth first resource block group in the M first resource block groups. The terminal may detect, using the second antenna panel, whether a first echo of a j-th one of the M first beams is received on a j-th one of the M second resource block groups. In the case of the same subcarrier and 60kHz subcarrier spacing, the j-th second resource block group of the M second resource block groups is adjacent to the time domain position of the j-th first resource block group of the M first resource block groups, and the j-th second resource block group of the M second resource block groups includes 4 resource blocks, that is, with limited beam performance of the terminal, the maximum distance of the first beam is 150 meters, and then the time required for transmission back and forth is 1 millisecond, and 4 timeslots.

Further, the terminal may detect whether a first echo of a j-th first beam of the M first beams is received in a j-th second resource block group of the M second resource block groups using a j-th first phased array antenna subarray of the M first phased array antenna subarrays. If a corresponding first echo is received, the terminal can determine a perception result of the first target object in the beam direction of the first echo according to the first echo. If multiple first echoes are received, the terminal may determine sensing results of multiple first targets, and the first targets may be different multiple targets.

In summary, under the condition that the terminal uses the laser radar to perform sensing, the terminal can also assist sensing through the wave beam, for example, the terminal can request the access network equipment to configure the first target time-frequency resource, so that the sensing operation on the target road is performed on the first target time-frequency resource by using the second antenna panel of the terminal, and the sensing precision is further improved.

In combination with the above method, the method further comprises:

the resource response message also carries an identity of the RIS and location information of the RIS (e.g., a spatial coordinate location based on a standard coordinate system (longitude and latitude)). The resource response message carries information indicating a second target time-frequency resource used by the first antenna panel to perform a perception operation on the target road. Then, the terminal may also send, according to the position information of the RIS, a second beam to the position of the RIS on the second target time-frequency resource using the first line panel, so that the RIS reflects the second beam in front of the first beam. The terminal may receive a second echo of a second beam from the RIS on a second target time-frequency resource using the first antenna panel. In this way, the terminal may further determine a perceived result of the second target object on the target road according to the second echo.

For example, the second target time-frequency resource includes a second target transmission time-frequency resource of each period, and the second target transmission time-frequency resource includes M first resource block groups. The terminal uses the first antenna panel to send a corresponding second beam on the j first resource block group in the M first resource block groups, M second beams are continuous, the directions of the M second beams are the same and all point to the RIS, and the directions of the M second beams reflected by the RIS are different. The antenna array of the first antenna panel is divided into M second phased array antenna subarrays, and the terminal uses the j second phased array antenna subarrays in the M second phased array antenna subarrays to transmit the j second beam in the M second beams in the j first resource block groups in the M first resource block groups. The RIS can determine the corresponding reflection coefficients through the time-frequency resource, for example, the M first resource block groups are in one-to-one correspondence with M reflection coefficients with different values, and the M second beams reflected by the M reflection coefficients can fully cover the front areas of the M first beams.

If the corresponding second echo is received, the terminal may determine a sensing result of the second target object in the beam direction of the second echo, such as a distance between the second target object and the terminal, a speed of the second target object, and the like, according to the second echo. If multiple second echoes are received, the terminal may determine the sensing result of multiple second targets, that is, the second targets may be different multiple targets.

The second target time-frequency resources may also include, for example, second target receive time-frequency resources for each period. The second target receive time-frequency resource may comprise M third resource block groups. The time domain positions of the M third resource block groups are the same, the frequency domain positions of the M third resource block groups are different, and at least one subcarrier is spaced between the last resource block of the ith third resource block group in the M third resource block groups and the first resource block of the (i+1) th second resource block group in the M third resource block groups so as to avoid interference generated by frequency band leakage; the frequency domain position of the jth third resource block group in the M third resource block groups is the same as the frequency domain position of the jth first resource block group in the M first resource block groups, each third resource block group in the M third resource block groups comprises a plurality of resource blocks, and on the same time slot, the number of the resource blocks contained in the jth third resource block group in the M third resource block groups is the same as the number of the resource blocks contained in the jth first resource block group in the M first resource block groups; the terminal uses the first antenna panel to detect whether a second echo of a j second beam in M second beams is received on a j second resource block group in M third resource block groups; under the condition that the same subcarrier is at the subcarrier interval of 60kHz, the j-th third resource block group in the M third resource block groups and the j-th first resource block group in the M first resource block groups are separated by 4 time slots in time domain position, namely, the time-frequency resources for executing sensing by different antenna panels can be relatively concentrated, so that the reduction of the resource utilization rate caused by the excessively discrete time-frequency resources is avoided. The j-th third resource block group in the M third resource block groups comprises 8 resource blocks. The terminal detects whether the terminal receives the second echo of the j second beam in the M second beams by using the j second phased array antenna subarray in the M third resource block groups, that is, in order to consider the reflection capability of the RIS, the maximum reflected beam can cover about 300 meters, and then the time required for transmission back and forth is 2 milliseconds, and 8 time slots.

The target detection device of the phased array antenna provided by the embodiment of the invention is described in detail above with reference to fig. 2. The following description is directed to an object detection device for a phased array antenna.

The apparatus is applied to a terminal, the apparatus being configured to: under the condition that the terminal moves on the target road, the terminal uses a first antenna panel of the terminal to send a resource request message to the access network equipment, wherein the resource request message is used for requesting a time-frequency resource used by executing a sensing operation on the target road through a second antenna panel of the terminal; the method comprises the steps that a terminal receives a resource response message returned by access network equipment aiming at a resource request message, wherein the resource response message carries information for indicating a first target time-frequency resource, and the first target time-frequency resource is used by executing a sensing operation on a target road through a second antenna panel of the terminal; and the terminal uses a second antenna panel of the terminal to execute the sensing operation of the target road on the first target time-frequency resource.

Optionally, the first target time-frequency resource further includes a first target receiving time-frequency resource of each period, the first target transmitting time-frequency resource includes M second resource block groups, the time domain positions of the M second resource block groups are the same, the frequency domain positions of the M second resource block groups are different, and at least one subcarrier is spaced between a last resource block of the i-th second resource block group in the M second resource block groups and a first resource block of the i+1th second resource block group in the M second resource block groups; the frequency domain position of the jth second resource block group in the M second resource block groups is the same as the frequency domain position of the jth first resource block group in the M first resource block groups, each second resource block group in the M second resource block groups comprises a plurality of resource blocks, and on the same time slot, the number of the resource blocks contained in the jth second resource block group in the M second resource block groups is the same as the number of the resource blocks contained in the jth first resource block group in the M first resource block groups. The terminal uses the second antenna panel to detect whether a first echo of a j-th first beam of the M first beams is received on a j-th second resource block group of the M second resource block groups. And under the condition of the same subcarrier and 60kHz subcarrier interval, the j second resource block group in the M second resource block groups is adjacent to the time domain position of the j first resource block group in the M first resource block groups. The j-th second resource block group in the M second resource block groups comprises 4 resource blocks.

Fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present invention. The communication device may be a terminal, or may be a chip (system) or other part or component that may be provided in the terminal, for example. As shown in fig. 3, the communication device 500 may include a processor 501. Optionally, the communication device 500 may further comprise a memory 502 and/or a transceiver 503. Wherein the processor 501 is coupled to the memory 502 and the transceiver 503, such as may be connected by a communication bus.

The following describes the respective constituent elements of the communication apparatus 500 in detail with reference to fig. 3:

the processor 501 is a control center of the communication device 500, and may be one processor or a collective term of a plurality of processing elements. For example, processor 501 is one or more central processing units (central processing unit, CPU), but may also be an integrated circuit (application specific integrated circuit, ASIC), or one or more integrated circuits configured to implement embodiments of the present invention, such as: one or more microprocessors (digital signal processor, DSPs), or one or more field programmable gate arrays (field programmable gate array, FPGAs).

Alternatively, the processor 501 may perform various functions of the communication device 500, such as performing the above-described object detection method of the phased array antenna shown in fig. 2, by running or executing a software program stored in the memory 502 and invoking data stored in the memory 502.

In a particular implementation, processor 501 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 3, as an embodiment.

In a specific implementation, as an embodiment, the communication apparatus 500 may also include a plurality of processors, where each of the processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

The memory 502 is configured to store a software program for executing the solution of the present invention, and the processor 501 controls the execution of the software program, and the specific implementation may refer to the above method embodiment, which is not described herein again.

Alternatively, memory 502 may be, but is not limited to, read-only memory (ROM) or other type of static storage device that may store static information and instructions, random access memory (random access memory, RAM) or other type of dynamic storage device that may store information and instructions, but may also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 502 may be integrated with the processor 501 or may exist separately and be coupled to the processor 501 through an interface circuit (not shown in fig. 3) of the communication device 500, which is not specifically limited by the embodiment of the present invention.

A transceiver 503 for communication with other communication devices. For example, the communication apparatus 500 is a terminal, and the transceiver 503 may be used to communicate with a network device or another terminal device. As another example, the communication apparatus 500 is a network device, and the transceiver 503 may be used to communicate with a terminal or another network device.

Alternatively, the transceiver 503 may include a receiver and a transmitter (not separately shown in fig. 3). The receiver is used for realizing the receiving function, and the transmitter is used for realizing the transmitting function.

Alternatively, the transceiver 503 may be integrated with the processor 501, or may exist separately, and be coupled to the processor 501 through an interface circuit (not shown in fig. 3) of the communication device 500, which is not specifically limited by the embodiment of the present invention.

It will be appreciated that the configuration of the communication device 500 shown in fig. 3 is not limiting of the communication device, and that an actual communication device may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

In addition, the technical effects of the communication device 500 may refer to the technical effects of the method described in the above method embodiments, which are not described herein.

It should be appreciated that the processor in embodiments of the invention may be a central processing unit (central processing unit, CPU), which may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be appreciated that the memory in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware (e.g., circuitry), firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present invention are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In addition, the character "/" herein generally indicates that the associated object is an "or" relationship, but may also indicate an "and/or" relationship, and may be understood by referring to the context.

In the present invention, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of target detection for a phased array antenna, the method comprising:

under the condition that a terminal moves on a target road, the terminal uses a first antenna panel of the terminal to send a resource request message to access network equipment, wherein the resource request message is used for requesting time-frequency resources used for executing sensing operation on the target road through a second antenna panel of the terminal;

the terminal receives a resource response message returned by the access network device for the resource request message, wherein the resource response message carries information for indicating a first target time-frequency resource, and the first target time-frequency resource is used by executing a sensing operation on the target road through a second antenna panel of the terminal;

And the terminal uses a second antenna panel of the terminal to execute the sensing operation of the target road on the first target time-frequency resource.

2. The method of claim 1, wherein the terminal performs a perception operation of the target link on the first target time-frequency resource using a second antenna panel of the terminal, comprising:

the terminal uses a second antenna panel of the terminal to send a first wave beam on the first target time-frequency resource along the terminal in the running direction of the target road;

the terminal receives a first echo of the first wave beam on the first target time-frequency resource by using a second antenna panel of the terminal;

and the terminal determines a perception result of the first target object on the target road according to the first echo.

3. The method of claim 2, wherein the first target time-frequency resource includes a first target transmission time-frequency resource of each period, the first target transmission time-frequency resource includes M first resource block groups, time domain positions of the M first resource block groups are identical, frequency domain positions of the M first resource block groups are different, a last resource block of an i first resource block group of the M first resource block groups and a first resource block of an i+1th first resource block group of the M first resource block groups are separated by at least one subcarrier, i is any integer from 1 to M-1, M is an integer greater than 1, each first resource block group of the M first resource block groups includes a plurality of resource blocks, the terminal uses the second antenna panel to transmit a corresponding first beam on a j first resource block group of the M first resource block groups, M first beams are consecutive, and any directions of the M first beams are different from each other by M to 1.

4. The method of claim 3, wherein the antenna array of the second antenna panel is divided into M first phased array antenna subarrays, and the terminal transmits a j first beam of the M first beams using a j first phased array antenna subarray of the M first phased array antenna subarrays in a j first resource block group of the M first resource block groups; according to the sequence that the indexes of the M first beams are sequentially increased, the included angle between the first beam indicated by the index of the first beam and the normal direction of the second antenna panel is firstly reduced and then increased, wherein if M is an odd number, the included angle between the M+12th first beam in the M first beams and the normal direction is 0; if M is an even number, the included angles between the M/2+1 th first beam and the M/2-1 th first beam in the M first beams and the normal direction are the smallest; if the included angle between the first beam of the M first beams and the normal direction is larger, the number of resource blocks included in one of the resource blocks corresponding to the M first resource block groups by the first beam is larger.

5. The method of claim 4, wherein the first target time-frequency resource further comprises a first target receive time-frequency resource for each period, the first target transmit time-frequency resource comprises M second resource block groups, the time domain positions of the M second resource block groups are identical, the frequency domain positions of the M second resource block groups are different, and at least one subcarrier is spaced between a last resource block of an i-th second resource block group of the M second resource block groups and a first resource block of an i+1th second resource block group of the M second resource block groups; the frequency domain position of the jth second resource block group in the M second resource block groups is the same as the frequency domain position of the jth first resource block group in the M first resource block groups, each second resource block group in the M second resource block groups comprises a plurality of resource blocks, and on the same time slot, the number of the resource blocks contained in the jth second resource block group in the M second resource block groups is the same as the number of the resource blocks contained in the jth first resource block group in the M first resource block groups; the terminal uses the second antenna panel to detect whether a first echo of a j-th first beam in the M first beams is received on a j-th second resource block group in the M second resource block groups; under the condition of the same subcarrier and 60kHz subcarrier interval, the j second resource block group in the M second resource block groups is adjacent to the time domain position of the j first resource block group in the M first resource block groups; and the j second resource block group in the M second resource block groups comprises 4 resource blocks.

6. The method of claim 5, wherein the terminal detects whether a first echo of a j-th one of the M first beams is received at a j-th one of the M second resource block groups using a j-th one of the M first phased array antenna subarrays.

7. The method of claim 6, wherein the resource response message further carries an identity of an RIS and location information of the RIS, the resource response message carrying information indicating a second target time-frequency resource, the second target time-frequency resource being a time-frequency resource used by the first antenna panel to perform a perception operation on the target road; the method further comprises the steps of:

the terminal sends a second beam to the position of the RIS on the second target time-frequency resource by using the first line panel according to the position information of the RIS, and the RIS is used for reflecting the second beam to the front of the first beam;

the terminal receives a second echo of the second beam from the RIS on the second target time-frequency resource using the first antenna panel;

And the terminal determines a perception result of a second target object on the target road according to the second echo.

8. The method of claim 7, wherein the second target time-frequency resources comprise second target transmit time-frequency resources for each period, the second target transmit time-frequency resources comprising the M first resource block groups; the terminal uses the first antenna panel to send a corresponding second beam on a j-th first resource block group in the M first resource block groups, wherein M second beams are continuous in total, the directions of the M second beams are the same and all point to the RIS, and the directions of the M second beams reflected by the RIS are different;

the antenna array of the first antenna panel is divided into M second phased array antenna subarrays, and the terminal uses the j second phased array antenna subarrays in the M second phased array antenna subarrays to transmit the j second wave beams in the M second wave beams in the j first resource block groups in the M first resource block groups.

9. The method of claim 8, wherein the second target time-frequency resource further comprises a second target receive time-frequency resource for each period, the second target receive time-frequency resource comprising M third resource block groups, the time-domain locations of the M third resource block groups being identical, the frequency-domain locations of the M third resource block groups being different, a last resource block of an i-th third resource block group of the M third resource block groups being spaced from a first resource block of an i+1th second resource block group of the M third resource block groups by at least one subcarrier; the frequency domain position of the jth third resource block group in the M third resource block groups is the same as the frequency domain position of the jth first resource block group in the M first resource block groups, each third resource block group in the M third resource block groups comprises a plurality of resource blocks, and on the same time slot, the number of the resource blocks contained in the jth third resource block group in the M third resource block groups is the same as the number of the resource blocks contained in the jth first resource block group in the M first resource block groups; the terminal detects whether a second echo of a j second beam in the M second beams is received or not on a j second resource block group in the M third resource block groups by using the first antenna panel; under the condition that the same subcarrier is arranged and the subcarrier interval is 60kHz, the j third resource block group in the M third resource block groups is separated from the time domain position of the j first resource block group in the M first resource block groups by 4 time slots; the j-th third resource block group in the M third resource block groups comprises 8 resource blocks;

And the terminal detects whether a second echo of a j second wave beam in the M second wave beams is received or not by using a j second phased array antenna subarray in the M third resource block groups.

10. An object detection device for a phased array antenna, the device being for use in a terminal, the device being configured to: