CN116170777B - Communication perception integrated Internet of vehicles communication link establishment method - Google Patents
Communication perception integrated Internet of vehicles communication link establishment method Download PDFInfo
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- CN116170777B CN116170777B CN202310181625.1A CN202310181625A CN116170777B CN 116170777 B CN116170777 B CN 116170777B CN 202310181625 A CN202310181625 A CN 202310181625A CN 116170777 B CN116170777 B CN 116170777B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/415—Identification of targets based on measurements of movement associated with the target
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A communication perception integrated Internet of vehicles communication link establishment method belongs to the field of communication perception integration and intelligent reflection surfaces. The invention solves the problem of low information sharing efficiency between vehicles due to slow establishment of a communication link in the Internet of vehicles. The invention adopts the technical scheme that: step one, intelligent reflecting surfaces are arranged on all cooperative vehicles in the Internet of vehicles; step two, the detection vehicle transmits radar detection signals into the region of interest; step three, the cooperative vehicles which receive the radar detection signals in the region of interest utilize pseudo-random codes to spread spectrum modulate the communication data to obtain combined signals, and the combined signals are modulated on the intelligent reflecting surface of the cooperative vehicles and then transmitted to the detection vehicles; step four, the detection vehicle separates and demodulates the information from different cooperative vehicles from the echo; and fifthly, establishing a communication link between the detection vehicle and the cooperative vehicle according to the information obtained in the fourth step. The method can be applied to the establishment of the communication link in the Internet of vehicles.
Description
Technical Field
The invention belongs to the field of communication perception integration and intelligent reflection surfaces, and particularly relates to a communication perception integration vehicle networking communication link establishment method.
Background
At the present time of rapid development of electronic technology, radar communication integrated technology has attracted more and more attention, and especially, the scene of combining communication and sensing technologies in the coming 6G age is more and more, such as smart home, intelligent transportation, internet of vehicles and the like. The internet of vehicles can reduce the probability of collision accidents of vehicles and improve the efficiency of traffic operation. The vehicle network realizes vehicle state information exchange and information sharing between vehicles through multiple vehicle interactions, and road traffic flow conditions can be judged through the vehicle state information exchange and sharing. However, in the direction of multi-vehicle interaction of the internet of vehicles, a rapid and effective communication link establishment method is still lacking at present, so that the efficiency of information sharing among vehicles is low.
Disclosure of Invention
The invention aims to solve the problem of low information sharing efficiency between vehicles due to slow establishment of a communication link in the Internet of vehicles, and provides a communication perception integrated Internet of vehicles communication link establishment method.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a communication perception integrated Internet of vehicles communication link establishment method specifically comprises the following steps:
step one, intelligent reflecting surfaces are arranged on all cooperative vehicles in the Internet of vehicles;
step two, the detection vehicle transmits radar detection signals s (t) into the region of interest;
step three, the cooperative vehicles which receive the radar detection signals in the region of interest utilize pseudo-random codes to spread spectrum modulate the communication data to obtain combined signals, and the combined signals are modulated on the intelligent reflecting surface of the cooperative vehicles and then transmitted to the detection vehicles;
step four, the detection vehicle separates and demodulates the information from different cooperative vehicles from the echo;
and fifthly, establishing a communication link between the detection vehicle and the cooperative vehicle according to the information obtained in the fourth step.
Further, the communication data is composed of navigation positioning information, vehicle running state information and information frame structures agreed by protocols of the communication information to be transmitted.
Further, the navigation positioning information includes longitude, latitude, and elevation.
Further, the vehicle driving state information includes a current speed, a braking condition, a short-term driving direction, and a vehicle safety state.
Further, the communication information to be transmitted comprises front road condition information, traffic indicator light information, voice and text interaction information and video entertainment information.
Further, the combined signal is modulated onto the intelligent reflecting surface of the combined signal by using BPSK modulation.
Further, the specific process of the fourth step is as follows:
the probe vehicle receives the echo signal s of the nth cooperative vehicle n (t)d n (t)c n (t) wherein d n (t) communication data representing the nth cooperative vehicle, c n (t) pseudo-random code, s, representing the nth cooperative vehicle binding n (t) represents a radar echo signal after the radar detection signal passes through the intelligent reflecting surface of the nth cooperative vehicle;
the detection vehicle utilizes a locally pre-stored pseudo-random sequence c n (t) despreading the echo signal to obtain a despread signal s n (t)d n (t) performing matched filtering, sliding correlation and BPSK demodulation on the despread signals, and detecting the vehicles to obtain the speed, distance and communication data d of the nth cooperative vehicle n (t)。
The beneficial effects of the invention are as follows:
the invention utilizes the intelligent reflecting surface technology, the vehicle can quickly embed own azimuth and communication information into radar echo when being detected by other vehicles, thus the information required by establishing a communication link and additional auxiliary information are acquired in the radar detection process, the communication link can be assisted to be quickly established, the additional time is not required, the communication link establishment speed is improved, and the information sharing efficiency between vehicles is further improved.
Drawings
FIG. 1 is a flow chart of a communication perception integrated Internet of vehicles communication link establishment method of the present invention;
FIG. 2 is a schematic diagram of echo modulation information using smart reflective surfaces;
FIG. 3 (a) is a schematic diagram of a vehicle 1 transmitting a wide range of detection signals during a plurality of vehicle interactions in the Internet of vehicles;
FIG. 3 (b) is a schematic diagram of the echo modulation of vehicles 2 and 3 during a plurality of vehicle interactions in the Internet of vehicles;
FIG. 3 (c) is a schematic diagram of a vehicle 1, a vehicle 2, and a vehicle 3 rapidly establishing a communication link during a plurality of vehicle interactions of the Internet of vehicles;
fig. 4 is a schematic diagram of an information frame structure that may be used.
Detailed Description
Detailed description of the inventionin the first embodiment, this embodiment will be described with reference to fig. 1. The communication perception integrated internet of vehicles communication link establishment method of the embodiment specifically comprises the following steps:
step one, providing controllable intelligent reflecting surfaces (Intelligent Reflecting Surface, IRS) for all cooperative vehicle equipment in the Internet of vehicles, such as the vehicle n shown in fig. 2;
step two, the detection vehicle transmits a large-range radar detection signal s (t) into an interested area (an area related to the operation of the detection vehicle);
the probe vehicle is shown as vehicle m in fig. 2, vehicle 1 in fig. 3 (a), and the cooperative vehicle is shown as vehicle 2 and vehicle 3 in fig. 3 (a).
Step three, the cooperative vehicles which receive radar detection signals in the region of interest utilize pseudo-random codes to spread spectrum modulate communication data to obtain combined signals, the combined signals are modulated onto the intelligent reflecting surface of the cooperative vehicles by changing the phase of the intelligent reflecting surface, and then the combined signals are transmitted to the detection vehicles, so that the information is ready to be transmitted to the required vehicles at any time;
step four, the detection vehicle separates and demodulates the information from different cooperative vehicles from the echo;
and fifthly, establishing a communication link between the detection vehicle and the cooperative vehicle according to the information obtained in the fourth step.
Taking fig. 3 (c) as an example, according to navigation positioning information such as longitude, latitude, elevation and the like embedded in the vehicle 2, the vehicle 1 can master the relative position of the vehicle 2, and in combination with distance and speed information obtained by radar detection of the vehicle 1, the information is used for narrowing the scanning range of communication beams in the process of establishing a communication link, and the beams are adjusted to point to specific users so as to realize the rapid beam alignment effect; the embedded vehicle running state information of the vehicle 2 can play a role in predicting and warning the vehicle 1, so that the vehicle 1 is ready in advance (such as emergency such as sudden braking and the like).
The second embodiment is as follows: the present embodiment is further limited to the first embodiment, and the communication data is composed of navigation positioning information, vehicle driving status information and information frame structure agreed by the protocol of the communication information to be transmitted.
The information frame structure used in the present embodiment may be the information frame structure shown in fig. 4, but is not limited to the information frame structure shown in fig. 4.
And a third specific embodiment: this embodiment is further defined by the second embodiment, where the navigation positioning information includes longitude, latitude, and altitude.
The specific embodiment IV is as follows: this embodiment is a further limitation of the third embodiment, and the vehicle running state information includes a current speed, a braking condition, a short-term running direction, and a vehicle safety state (normal, to be repaired, failed).
Fifth embodiment: the fourth embodiment is further defined by the third embodiment, where the communication information to be transmitted includes front road condition information, traffic light information (transmitted from the front vehicle layer by layer), voice, text interaction information, and audio-visual entertainment information.
Specific embodiment six: this embodiment is further limited to the fifth embodiment, and the modulation method used to modulate the combined signal onto the smart reflecting surface is BPSK modulation.
Seventh embodiment: the present embodiment is further limited to the sixth embodiment, and the specific process of the fourth step is as follows:
the probe vehicle receives the echo signal s of the nth cooperative vehicle n (t)d n (t)c n (t) wherein d n (t) communication data representing the nth cooperative vehicle, c n (t) pseudo-random code, s, representing the nth cooperative vehicle binding n (t) represents the passage of a radar detection signalRadar echo signals behind the intelligent reflecting surface of the nth cooperative vehicle;
the detection vehicle utilizes a locally pre-stored pseudo-random sequence c n (t) despreading the echo signal to obtain a despread signal s n (t)d n (t) performing matched filtering, sliding correlation and BPSK demodulation on the despread signals, and detecting the vehicles to obtain the speed, distance and communication data d of the nth cooperative vehicle n (t)。
As shown in fig. 3 (b), the probe vehicle (such as vehicle 1) receives echo information of different vehicles (such as vehicle 2 and vehicle 3) to be detected, the echo signals are modulated by the vehicles (equipped intelligent reflecting surfaces) to be detected, corresponding communication data are embedded, and taking fig. 3 (b) as an example, the echo signals of the corresponding vehicles 2 are s 2 (t)d 2 (t)c 2 (t) wherein s 2 (t) is a conventional radar echo signal, d 2 (t)c 2 (t) is communication data modulated thereon; similarly, the echo signal of the vehicle 3 is s 3 (t)d 3 (t)c 3 (t). The vehicle 1 utilizes a locally pre-stored pseudo-random sequence c 2 (t) and c 3 (t) despreading to obtain s by using conventional spread spectrum communication despreading method 2 (t)d 2 (t) and s 3 (t)d 3 (t) and then solving the speed, distance and embedded information d of the vehicle 2 by using conventional signal processing means such as matched filtering, sliding correlation, BPSK demodulation and the like 2 (t) speed, distance and embedded information d of the vehicle 3 3 (t)。
The above examples of the present invention are only for describing the calculation model and calculation flow of the present invention in detail, and are not limiting of the embodiments of the present invention. Other variations and modifications of the above description will be apparent to those of ordinary skill in the art, and it is not intended to be exhaustive of all embodiments, all of which are within the scope of the invention.
Claims (6)
1. The communication perception integrated Internet of vehicles communication link establishment method is characterized by comprising the following steps of:
step one, intelligent reflecting surfaces are arranged on all cooperative vehicles in the Internet of vehicles;
step two, the detection vehicle transmits radar detection signals s (t) into the region of interest;
step three, the cooperative vehicles which receive the radar detection signals in the region of interest utilize pseudo-random codes to spread spectrum modulate the communication data to obtain combined signals, and the combined signals are modulated on the intelligent reflecting surface of the cooperative vehicles and then transmitted to the detection vehicles;
the communication data is composed of navigation positioning information, vehicle running state information and information frame structures agreed by protocols of communication information to be transmitted;
step four, the detection vehicle separates and demodulates the information from different cooperative vehicles from the echo;
and fifthly, establishing a communication link between the detection vehicle and the cooperative vehicle according to the information obtained in the fourth step.
2. The communication perception integrated internet of vehicles communication link establishment method according to claim 1, wherein the navigation positioning information includes longitude, latitude and elevation.
3. The communication perception integrated internet of vehicles communication link establishment method according to claim 2, wherein the vehicle driving status information includes current speed, braking condition, short-term driving direction and vehicle safety status.
4. The method for establishing a communication link of a communication perception integrated internet of vehicles according to claim 3, wherein the communication information to be transmitted comprises front road condition information, traffic light information, voice and text interaction information and audio-visual entertainment information.
5. The method for establishing a communication link of a communication perception integrated internet of vehicles according to claim 4, wherein the combined signal is modulated onto an intelligent reflecting surface of the combined signal by using a BPSK modulation method.
6. The method for establishing a communication link of the internet of vehicles with integrated communication perception according to claim 5, wherein the specific process of the fourth step is as follows:
the probe vehicle receives the echo signal s of the nth cooperative vehicle n (t)d n (t)c n (t) wherein d n (t) communication data representing the nth cooperative vehicle, c n (t) pseudo-random code, s, representing the nth cooperative vehicle binding n (t) represents a radar echo signal after the radar detection signal passes through the intelligent reflecting surface of the nth cooperative vehicle;
the detection vehicle utilizes a locally pre-stored pseudo-random sequence c n (t) despreading the echo signal to obtain a despread signal s n (t)d n (t) performing matched filtering, sliding correlation and BPSK demodulation on the despread signals, and detecting the vehicles to obtain the speed, distance and communication data d of the nth cooperative vehicle n (t)。
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Citations (5)
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| CN110794403A (en) * | 2019-10-30 | 2020-02-14 | 南京航空航天大学 | Method for realizing detection-communication integrated function of automobile anti-collision radar |
| CN113567936A (en) * | 2021-07-29 | 2021-10-29 | 哈尔滨工业大学 | Single-channel multilink beam forming echo detection method based on m sequence |
| CN114286439A (en) * | 2021-12-06 | 2022-04-05 | 电子科技大学 | Mobile equipment positioning and tracking method based on multiple intelligent reflecting surfaces |
| CN114966763A (en) * | 2021-02-26 | 2022-08-30 | 刘义 | Signal pattern based on orthogonal pseudo-random code pair and receiving processing method |
| CN115442904A (en) * | 2022-08-25 | 2022-12-06 | 广东工业大学 | Communication perception integration method and device based on clutter rejection and intelligent reflection surface assistance |
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- 2023-02-28 CN CN202310181625.1A patent/CN116170777B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794403A (en) * | 2019-10-30 | 2020-02-14 | 南京航空航天大学 | Method for realizing detection-communication integrated function of automobile anti-collision radar |
| CN114966763A (en) * | 2021-02-26 | 2022-08-30 | 刘义 | Signal pattern based on orthogonal pseudo-random code pair and receiving processing method |
| CN113567936A (en) * | 2021-07-29 | 2021-10-29 | 哈尔滨工业大学 | Single-channel multilink beam forming echo detection method based on m sequence |
| CN114286439A (en) * | 2021-12-06 | 2022-04-05 | 电子科技大学 | Mobile equipment positioning and tracking method based on multiple intelligent reflecting surfaces |
| CN115442904A (en) * | 2022-08-25 | 2022-12-06 | 广东工业大学 | Communication perception integration method and device based on clutter rejection and intelligent reflection surface assistance |
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