CN114915992A - Signal interference detection method and interference detection device - Google Patents

Signal interference detection method and interference detection device Download PDF

Info

Publication number
CN114915992A
CN114915992A CN202110171262.4A CN202110171262A CN114915992A CN 114915992 A CN114915992 A CN 114915992A CN 202110171262 A CN202110171262 A CN 202110171262A CN 114915992 A CN114915992 A CN 114915992A
Authority
CN
China
Prior art keywords
signal
time synchronization
value
rssi
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110171262.4A
Other languages
Chinese (zh)
Inventor
吴巧敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN202110171262.4A priority Critical patent/CN114915992A/en
Publication of CN114915992A publication Critical patent/CN114915992A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The application provides a signal interference detection method and an interference detection device, which are applied to the field of vehicle networking, for example, a C-V2X scene, and the scheme considers the change characteristics of the value of RSSI and the value of SINR when a vehicle networking terminal suffers signal interference (namely the value of RSSI is increased and exceeds a normal range, and the value of RSRP is reduced and is smaller than the normal range), and the characteristics that the vehicle networking terminal will lose synchronization. Therefore, when the value of the RSSI is greater than the second preset value, and the value of the SINR is less than the third preset value, and the time synchronization status information indicates that the vehicle networking terminal is out of synchronization, the interference detection apparatus determines that the vehicle networking terminal suffers from signal interference. The method is used for detecting whether the Internet of vehicles terminal suffers signal interference under the Internet of vehicles scene, and then prompting the Internet of vehicles terminal to send out warning signals in time.

Description

Signal interference detection method and interference detection device
Technical Field
The embodiment of the application relates to the field of Internet of vehicles V2X, in particular to a signal interference detection method and an interference detection device.
Background
An interference signal (interfering signal) refers to a signal that causes impairment to reception or transmission of a desired signal. The signal interference refers to a situation that the terminal device cannot normally transmit and receive signals by adopting the interference signal to maliciously attack the terminal device. For example, in the field of vehicle networking (V2X), if an attacker uses an interferometer to transmit a strong signal to a vehicle networking terminal (e.g., a vehicle, etc.), a useful signal between the vehicle networking terminal and another vehicle networking terminal is submerged in the interference signal and cannot be wirelessly communicated, and thus a fault occurring in the vehicle networking terminal may not be timely notified to a server or a vehicle owner, thereby causing a significant safety hazard. Therefore, it is urgently needed to develop an interference detection (interference detection) technology to detect whether there is an interference signal in the wireless environment where the car networking terminal is currently located.
In the interference detection scheme proposed in 2G/3G/4G/5G communication, an interference detection apparatus determines whether a mobile terminal suffers signal interference according to three conditions, namely, a measured value of Received Signal Strength Indicator (RSSI), a measured value of signal to interference plus noise ratio (SINR), and whether the mobile terminal successfully registers in a network.
However, in the scenario of Cellular network-based vehicle networking C-V2X (Cellular V2X), the communication between the terminals of the internet of vehicles does not necessarily require network registration, and therefore, the interference detection scheme applied to 2G/3G/4G/5G communication cannot be directly applied to the scenario of vehicle networking. Therefore, how to implement interference detection in the car networking scenario is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The application provides a signal interference detection method and an interference detection device, which are used for detecting whether a car networking terminal suffers signal interference or not in a car networking scene, and further prompting the car networking terminal to send an alarm signal in time.
In a first aspect, the present application provides a signal interference detection method, applied to a terminal in a vehicle networking system, executed by an interference detection apparatus in the terminal in the vehicle networking system, including: the interference detection device acquires Received Signal Strength Indication (RSSI), signal-to-interference-plus-noise ratio (SINR) and time synchronization state information, and the time synchronization state information is used for indicating whether the vehicle networking terminal is out of step or not. Then, the interference detection device determines whether the vehicle networking terminal suffers signal interference according to the RSSI, the SINR and the time synchronization state information.
In an optional implementation manner, the obtaining of the time synchronization status information by the interference detection apparatus includes: periodically receiving a time synchronization signal, wherein the time synchronization signal is used for calibrating a local clock of the Internet of vehicles terminal; the time synchronization status information is determined according to the time synchronization signal.
In an alternative embodiment, the determining the time synchronization status information according to the time synchronization signal includes:
when the time synchronization signal is not received in at least one period, or when the difference value between the clock indicated by the time synchronization signal and the local clock of the Internet of vehicles terminal is greater than a first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is out of step; and when the difference value between the clock indicated by the time synchronization signal received in each period and the local clock of the Internet of vehicles terminal is less than or equal to the first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is not out of step.
In an optional implementation manner, the determining whether the vehicle networking terminal suffers from signal interference according to the RSSI, the SINR and the time synchronization status information includes: and when the value of the RSSI is greater than a second preset value, the value of the SINR is less than a third preset value, and the time synchronization state information indicates that the vehicle networking terminal is out of step, determining that the vehicle networking terminal suffers from signal interference.
In an alternative embodiment, the time synchronization signal is a signal from a global navigation satellite system GNSS.
In an alternative embodiment, the method further comprises: acquiring received power RSRP; and determining whether the vehicle networking terminal suffers signal interference according to the change rate of the RSSI value in a preset time range and the change rate of the RSRP value in the preset time range.
In an optional embodiment, the determining whether the vehicle networking terminal suffers from signal interference according to the change rate of the RSSI in the preset time range and the change rate of the RSSI in the preset time range includes: and when the change rate of the RSSI within the preset time range is greater than a fourth preset value and the change rate of the RSSI within the preset time range is less than a fifth preset value, determining that the vehicle networking terminal suffers from signal interference.
In a second aspect, the present application provides an interference detection device, which is located in a terminal of a vehicle networking, and includes: the device comprises an acquisition module and a determination module. The system comprises an acquisition module, a synchronization module and a synchronization module, wherein the acquisition module is used for acquiring Received Signal Strength Indication (RSSI), signal-to-interference-plus-noise ratio (SINR) and time synchronization state information, and the time synchronization state information is used for indicating whether the vehicle networking terminal is out of step; and the determining module is used for determining whether the vehicle networking terminal suffers signal interference according to the RSSI, the SINR and the time synchronization state information.
In an optional implementation, the obtaining module includes: the clock synchronization module is used for periodically receiving a time synchronization signal, and the time synchronization signal is used for calibrating a local clock of the Internet of vehicles terminal; the clock synchronization module is further configured to determine the time synchronization status information according to the time synchronization signal.
In an optional implementation manner, the clock synchronization module is specifically configured to: when the time synchronization signal is not received in at least one period, or when the difference value between the clock indicated by the time synchronization signal and the local clock of the Internet of vehicles terminal is greater than a first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is out of step; and when the difference value between the clock indicated by the time synchronization signal received in each period and the local clock of the Internet of vehicles terminal is less than or equal to the first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is not out of step.
In an optional implementation manner, the determining module is specifically configured to: and when the value of the RSSI is greater than a second preset value, the value of the SINR is less than a third preset value, and the time synchronization state information indicates that the vehicle networking terminal is out of step, determining that the vehicle networking terminal is subjected to signal interference.
In an alternative embodiment, the time synchronization signal is a signal from a global navigation satellite system GNSS.
In an optional implementation manner, the obtaining module is further configured to obtain received power RSRP; the determining module is further configured to determine whether the vehicle networking terminal suffers signal interference according to a change rate of the value of the RSSI within a preset time range and a change rate of the value of the RSRP within a preset time range.
In an optional implementation manner, the determining module is specifically configured to: and when the change rate of the RSSI within the preset time range is greater than a fourth preset value and the change rate of the RSSI within the preset time range is less than a fifth preset value, determining that the vehicle networking terminal suffers from signal interference.
In a third aspect, an embodiment of the present application provides a vehicle networking terminal, which may include a processing module and a transceiver module. Wherein the processing module may be a processor, and the transceiver module may be a transceiver; the vehicle networking terminal can also comprise a storage module, and the storage module can be a memory; the storage module is used for storing instructions, and the processing module executes the instructions stored by the storage module to enable the internet of vehicles terminal to execute the method in the first aspect or any one of the embodiments of the first aspect.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method as described in any one of the foregoing first aspect and the foregoing first aspect.
According to the technical scheme, the embodiment of the application has the following advantages:
in the embodiment of the application, the change characteristics of the value of the RSSI and the value of the SINR (namely, the value of the RSSI is increased and exceeds a normal range, and the value of the RSRP is reduced and is smaller than the normal range) when the vehicle networking terminal is subjected to signal interference are considered, and the vehicle networking terminal is characterized in that the vehicle networking terminal is out of step. Therefore, when the value of the RSSI is greater than the second preset value, and the value of the SINR is less than the third preset value, and the time synchronization status information indicates that the vehicle networking terminal is out of step, the interference detection device determines that the vehicle networking terminal suffers from signal interference. Compare in 2G 3G 4G 5G interference detection scheme among the conventional art, whether this terminal of traditional interference detection scheme needs to detect successfully registers, and the car networking terminal does not have the notion of registering, consequently, the scheme that this application provided will judge whether the car networking terminal is out of step as judging whether the car networking terminal suffers one of the condition of interference, not only can detect out whether the car networking terminal suffers signal interference, judge that the condition is simple moreover, be favorable to judging whether this car networking terminal suffers signal interference fast.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application.
Fig. 1 is a system architecture diagram of a signal interference detection method according to the present application;
fig. 2 is a flowchart of a signal interference detection method according to the present application;
FIG. 3 is a schematic diagram of an embodiment of an interference detection apparatus according to the present application;
fig. 4 is a schematic diagram of another embodiment of the interference detection apparatus in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For the sake of understanding, some terms related to the embodiments of the present application will be described below:
vehicle to internet (V2X): the finger can provide vehicle information through a sensor or a vehicle-mounted terminal device or the like mounted on a vehicle, and realize communication between a vehicle to vehicle (V2V), a vehicle to infrastructure (V2I), a vehicle to network (V2N), and a vehicle to pedestrian (V2P). The technology of Cellular network-based vehicle networking C-V2X (Cellular V2X) is one of the technologies of vehicle networking, and the technology of C-V2X is a vehicular wireless communication technology formed based on the evolution of Cellular network communication technologies such as 3G/4G/5G, and refers to the smooth evolution from LTE-V2X based on a Long Term Evolution (LTE) system to 5G V2X based on a fifth generation mobile communication technology (5G). The interference detection method provided by the application is mainly applied to the C-V2X scene, and in practical application, the method can also be applied to C-V2X based on a subsequent evolution system, and the application is not limited specifically.
Proximity communication 5 (PC 5) interface: also known as a direct link interface or a sidelink interface, for enabling direct communication between the vehicle networking terminals.
A Uu interface: the present invention is short for a radio interface between a Universal Terrestrial Radio Access Network (UTRAN) and a user equipment (user equipment). The Uu interface is an air interface link interface between the car networking terminal and the access network device (e.g., a base station), and is used for implementing communication between the car networking terminal and the access network device.
Road Side Unit (RSU): the present invention relates to a device capable of communicating with an On Board Unit (OBU) or a vehicle BOX (T-BOX) by using a Direct Short Range Communication (DSRC) technology. The road side unit is often used for realizing functions of vehicle information collection, monitoring and the like.
Received Signal Strength Indicator (RSSI): the total power of signals received by the vehicle networking terminal is indicated, wherein the signals received by the vehicle networking terminal comprise useful signals, noise and interference signals.
Signal to interference plus noise ratio (SINR): the ratio of the power of a useful signal received by a vehicle networking terminal to the sum of the power of received noise and the power of an interference signal is referred to, and the SINR is generally used as a measure of signal quality.
Reference Signal Receiving Power (RSRP): is the average of the received signal power over all Resource Elements (REs) carrying the reference signal within a certain symbol. Which may be understood as the strength of the pilot signal, the reference signal received power does not contain the power of the noise.
The following introduces a system architecture and an application scenario related to the signal interference detection method proposed in the present application:
the scheme provided by the application can be applied to a C-V2X system. As shown in fig. 1, the vehicle networking system includes a vehicle networking terminal 01, a base station 02, a Global Navigation Satellite System (GNSS) 03, and the like.
The vehicle networking terminal 01 includes a vehicle 011/012 carrying an on board unit OBU or an on board Box T-Box, a Road Side Unit (RSU) 013, and the like. The terminal 01 can realize communication with other terminals through a PC5 interface. For example, vehicle 011 can communicate with vehicle 012 through a PC5 interface, and the vehicle 011 can also communicate with roadside unit RSU 013 through a PC5 interface. The car networking terminal 01 may also implement communication with an access network through a Uu interface with an access network device (e.g., the base station 02). For example, the vehicle 011 or the roadside unit RSU 013 may communicate with the aforementioned base station 02 over the Uu interface.
Furthermore, the global navigation satellite system GNSS 03 is configured to provide a synchronization signal (e.g., a time synchronization signal or a position synchronization signal, etc.) to the internet of vehicles terminal 01, so that different internet of vehicles terminals 01 can achieve time synchronization and/or position synchronization through the aforementioned GNSS 03. As an example, the GNSS 03 may include navigation satellite systems provided in various countries and regions. For example, the Beidou satellite navigation system in China, the Global Positioning System (GPS) in the United states, the Galileo system in Europe, the Global navigation satellite System (GLONASS) in Russia, and so on. The details are not limited herein.
In the car networking scenario shown in fig. 1, if a car networking terminal (e.g., a vehicle 011) suffers from signal interference, the vehicle 011 may not be able to communicate with the vehicle 012 or the road side unit RSU 013. At the moment, if the vehicle networking terminal can be informed to a vehicle owner or a server just when suffering signal interference, the traffic accidents caused by the signal interference can be effectively reduced.
In this regard, the present application provides a signal interference detection method to solve the foregoing problems. As shown in fig. 2, the signal interference detection method is executed by an interference detection device in the car networking terminal, where the interference detection device may be the aforementioned on-board unit OBU or a functional module in the on-board unit OBU, or may also be a functional module in the on-board Box T-Box or the on-board Box T-Box, and is not limited herein. Specifically, the interference detection apparatus performs steps including:
step 201, obtaining the RSSI and the measurement information.
The RSSI is used for reflecting the total power of the signals which can be currently received by the Internet of vehicles terminal. Generally, the value of the RSSI depends on the sum of the power of the useful signal and the power of the unavoidable noise. When the vehicle networking terminal suffers from signal interference, the value of the RSSI depends on the sum of the power of the useful signal, the interference signal and the noise. Therefore, if the value of the RSSI is higher than the normal range, the car networking terminal may have signal interference.
In addition, the measurement information is used to indicate the quality or power of wireless signals between the vehicle networking terminal and other vehicle networking terminals. Specifically, the measurement information may be a signal to interference plus noise ratio SINR or a reference signal received power RSRP. Of course, the measurement information may include two indicators, SINR and RSRP. Wherein, SINR refers to the ratio of the useful signal to the sum of the interference signal and the noise, and is used for reflecting the quality of the signal. Generally, the larger the SINR value is, the better the signal quality between the terminal in the internet of vehicles and other terminals in the internet of vehicles is; the smaller the SINR value is, the worse the signal quality between the terminal of the Internet of vehicles and other terminals of the Internet of vehicles is. Generally, if the car networking terminal happens to suffer from signal interference, the SINR will become smaller or even smaller than the normal range. The RSRP is the power of the desired signal, and is determined by a pilot signal transmitted between the terminal in the vehicle network and another terminal in the vehicle network. Generally, the RSRP value does not suddenly increase or suddenly decrease, but fluctuates within a normal range. If the vehicle networking terminal suffers from signal interference, the value of the RSRP may exceed the aforementioned normal range.
It should be understood that the interference detection device periodically obtains the RSSI, SINR and RSRP, that is, the interference detection device obtains the values of RSSI, SINR and RSRP at regular intervals. For example, the interference detection apparatus may obtain the RSSI value, the SINR value, and the RSRP value every 1s or 0.5 s.
In addition, after the values of the indexes are obtained each time, the interference detection device decides which way to adopt according to the type of the measurement information to judge whether the vehicle networking terminal suffers from signal interference. Specifically, when the measurement information is SINR, the interference detection apparatus will sequentially perform step 202a and step 202 b; when the measurement information is RSRP, the interference detection apparatus will execute step 202 c; when the measurement information includes SINR and RSRP, the interference detection apparatus will perform step 202a and step 202c at the same time, and of course, the interference detection apparatus will also perform step 202b after performing step 202 a. The details are not limited herein.
Step 202a, time synchronization status information is determined.
In this embodiment, when the measurement information includes SINR, the interference detection apparatus will execute step 202 a. It should be understood that this step 202a may also be performed in conjunction with the aforementioned step 201 notification, i.e. the interference detection apparatus acquires the time synchronization status information while acquiring the RSSI and measurement information. Specifically, the chronological order of step 201 and step 202a is not limited in the present application.
The time synchronization state information is used for indicating whether the vehicle networking terminal is out of step or not. The out-of-step can be understood as a state in which a local clock of the terminal of the internet of vehicles deviates from a reference clock. The reference clock may be a signal from a global navigation satellite system GNSS, or may be from another car networking terminal adjacent to the car networking terminal. In a possible embodiment, the loss of synchronization may be understood as the inability of the terminal to receive a signal reflecting the reference clock.
Specifically, the interference detection apparatus may determine the time synchronization status information through any one of the following embodiments:
in an alternative embodiment, the interference detection device will periodically receive a time synchronization signal that can provide the aforementioned reference clock to the internet of vehicles terminal, which is used to calibrate the local clock of the internet of vehicles terminal. Optionally, the time synchronization signal is a signal from a global navigation satellite system GNSS. Illustratively, the time synchronization signal may be a Pulse Per Second (PPS) signal.
Specifically, when the car networking terminal is subjected to signal interference, the interference detection device may not receive the time synchronization signal, or the time synchronization signal received by the interference detection device is delayed. Therefore, when the time synchronization signal is not received in at least one period, or the difference value between the clock indicated by the time synchronization signal and the local clock of the internet of vehicles terminal is greater than a first preset value, the interference detection device determines that the time synchronization state information indicates that the internet of vehicles terminal is out of synchronization. For example, a plurality of interference detection signals receive the time synchronization signal once every 0.1s, and after the interference detection device receives the time synchronization signal 1 at 0.1s, the interference detection device does not receive the time synchronization signal 2 at 0.2s, and at this time, the interference detection device may determine that the car networking terminal is out of synchronization. For another example, when the interference detection apparatus receives the time synchronization signal every 0.1s, and after the interference detection apparatus receives the time synchronization signal 1 at 0.1s, the clock signal indicated by the received time synchronization signal 2 at 0.2s is not consistent with the clock signal local to the car networking terminal, the interference detection apparatus may determine that the car networking terminal is out of synchronization.
Correspondingly, if the difference value between the clock indicated by the time synchronization signal received by the interference detection device in each period and the local clock of the car networking terminal is less than or equal to the first preset value, the interference detection device determines that the time synchronization state information indicates that the car networking terminal is not out of step.
In another alternative embodiment, the interference detection apparatus will receive V2X messages from other car networking terminals, where the V2X messages carry a time synchronization signal, which can provide the aforementioned reference clock to the car networking terminal, and the time synchronization signal is used to calibrate the local clock of the car networking terminal. Optionally, the time synchronization signal may be a clock signal of the OBU of the other car networking terminal. When the difference value between the clock signal in the V2X message received by the car networking terminal and the local clock of the car networking terminal is greater than the preset value, the interference detection device determines that the time synchronization status information indicates that the car networking terminal is out of step. When the difference value between the clock signal in the V2X message received by the car networking terminal and the local clock of the car networking terminal is smaller than or equal to the preset value, the interference detection device determines that the time synchronization status information indicates that the car networking terminal is not out of step.
It should be appreciated that after step 202a, the interference detection device determines that the time synchronization status information may indicate that the vehicle-networking terminal is out of synchronization or that the vehicle-networking terminal is not out of synchronization.
And step 202b, determining whether the vehicle networking terminal suffers signal interference or not according to the RSSI, the SINR and the time synchronization state information.
In this embodiment, because, when the car networking terminal suffered from signal interference, the more powerful interfering signal that this car networking terminal received will lead to the value of RSSI to increase, the value of SINR reduces to, this car networking terminal will be out of step. Therefore, when the value of the RSSI is greater than the second preset value, and the value of the SINR is less than the third preset value, and the time synchronization status information indicates that the vehicle networking terminal is out of step, the interference detection device determines that the vehicle networking terminal suffers from signal interference. The interference detection means will then perform step 203. If any one of the three conditions is not met, that is, the RSSI is less than or equal to the second preset value, or the SINR is greater than or equal to the third preset value, or the time synchronization status information indicates that the vehicle networking terminal is not out of synchronization, the interference detection apparatus determines that the vehicle networking terminal is not interfered by a signal. Then, the interference detection apparatus will perform step 201 again, that is, obtain the values of the indicators such as RSSI, SINR, RSRP and the like at the next time again, and determine whether the car networking terminal suffers from signal interference again according to the foregoing steps.
Illustratively, the second preset value may be-30 dBm, and the third preset value may be-15 dB.
It should be understood that the second preset value and the third preset value may be set to specific values according to an actual application scenario, and may also be adjusted according to the actual application scenario, where the specific values of the second preset value and the third preset value are not limited in this application.
In this embodiment, the change characteristics of the value of the RSSI and the value of the SINR (signal to interference ratio) when the car networking terminal is subjected to signal interference are considered (that is, the value of the RSSI increases and exceeds the normal range, and the value of the RSRP decreases and is smaller than the normal range), and the car networking terminal is out of step. Therefore, when the value of the RSSI is greater than the second preset value, and the value of the SINR is less than the third preset value, and the time synchronization status information indicates that the vehicle networking terminal is out of synchronization, the interference detection apparatus determines that the vehicle networking terminal suffers from signal interference. Compare in 2G 3G 4G 5G interference detection scheme among the conventional art, whether this terminal of traditional interference detection scheme needs to detect successfully registers, and the car networking terminal does not have the notion of registering, consequently, the scheme that this application provided will judge whether the car networking terminal is out of step as judging whether the car networking terminal suffers one of the condition of interference, not only can detect out whether the car networking terminal suffers signal interference, judge that the condition is simple moreover, be favorable to judging whether this car networking terminal suffers signal interference fast.
And step 202c, determining whether the vehicle networking terminal suffers signal interference according to the RSSI and the RSRP.
In this embodiment, when the measurement information is RSRP, the interference detection device may determine whether the vehicle networking terminal is subjected to signal interference according to a change condition of the RSSI and a change condition of the RSRP. Generally, if the interference signal emitted by the signal interference meter can cause interference in the car networking terminal, the interference signal emitted by the signal interference meter is generally large. When the jammer is turned on for a short period of time, the total power of the signal received by the vehicle networking terminal will increase rapidly, but the power of the useful signal received by the vehicle networking terminal may not increase significantly. Based on the signal change characteristics, the interference detection device calculates the change rate of RSSI (hereinafter referred to as RSSI change rate) and the change rate of RSRP (hereinafter referred to as RSRP change rate) in a preset time range, and determines whether the vehicle networking terminal is subjected to signal interference according to the RSSI change rate and the RSRP change rate. Specifically, when the RSSI change rate is greater than a fourth preset value and the RSRP change rate is less than a fifth preset value, the interference detection device determines that the vehicle networking terminal is subjected to signal interference. It can also be understood that, when the RSSI change rate is large (i.e., the RSSI value is rapidly increased), and when the RSRP change rate is small (i.e., the RSRP value is weakly changed), the interference detection apparatus determines that the vehicle networking terminal is subjected to signal interference.
It should be understood that the fourth preset value and the fifth preset value may be set to specific values according to an actual application scenario, or specific values of the fourth preset value and the fifth preset value may also be adjusted according to the actual application scenario, and the specific values of the fourth preset value and the fifth preset value are not limited in this application.
In an alternative embodiment, the interference detection apparatus may compare the current RSSI value with an average RSSI value in a certain time range to determine whether the RSSI change rate is out of a normal range. For example, if the RSSI and RSRP are counted once per second, the average value of the latest t seconds is calculated, the average value of the RSSI in the t seconds is compared with the value of the current RSSI, and the average value of the RSRP in the t seconds is compared with the value of the current RSRP. If the value of the current RSSI exceeds the preset range and the value of the current RSRP does not exceed the preset range, the interference detection device determines that the vehicle networking terminal suffers signal interference. For example, the foregoing determination condition may be expressed by the following formula:
RSSI 0 >AVG RSSI ×(1+THR RSSI )；
RSRP 0 >AVG RSRP ×(1-THR RSRP )；
RSRP 0 <AVG RSRP ×(1+THR RSRP )；
wherein the RSSI 0 The RSSI value obtained by the current interference detection device is represented; RSRP 0 The value of the RSRP acquired by the current interference detection device is represented; THR RSSI Representing the safety factor of the RSSI and representing the reasonable fluctuation range of the average value of the RSSI; THR RSRP Representing the safety factor of the RSRP and representing the reasonable fluctuation range of the mean value of the RSRP;
Figure BDA0002938990500000081
Figure BDA0002938990500000082
the average value of the values of the RSSI within t seconds is represented;
Figure BDA0002938990500000083
representing the average of the values of RSRP over t seconds.
Exemplarily, the aforementioned HR RSSI It may be 30% of the above THR RSRP 10 percent can be taken.
It should be understood that the RSSI change rate may be indicated by other indicators. For example, the loop ratio increases by a speed, i.e., a ratio of the value of the RSSI at the current time to the value of the RSSI at the previous time. The specific representation of the RSSI change rate and RSRP change rate is not limited by the specific application.
In this embodiment, when the car networking terminal is subjected to signal interference, the change characteristics of the RSSI value and the RSRP value (that is, the characteristics that the RSSI value is rapidly increased and the RSRP value is less changed) are considered, and therefore, whether the car networking terminal is subjected to signal interference is determined by using an index reflecting the RSSI change rate and an index reflecting the RSRP change rate. Compared with a 2G/3G/4G/5G interference detection scheme in the prior art, the traditional interference detection scheme does not consider the characteristic that the overall signal is changed rapidly but the useful signal is not changed greatly due to an interferometer, so that the traditional interference detection scheme has a certain rate of missing report and false report. The scheme provided by the embodiment considers the characteristics, so that the fact that the vehicle networking terminal suffers from signal interference is favorably detected before the value of the RSSI reaches the second preset value, and the missing report rate and the false report rate of the interference detection device are favorably reduced.
It should be noted that, the result obtained in any of the foregoing steps 202b or 202c indicates that the car networking terminal is suffering from signal interference, and the interference detection apparatus may be triggered to execute step 203.
And step 203, sending an alarm signal to user equipment connected with the Internet of vehicles terminal.
In this embodiment, after the interference detection device determines that the car networking terminal suffers from signal interference, the interference detection device sends an alarm signal to user equipment connected with the car networking terminal, where the alarm signal is used to prompt a user that the car networking terminal suffers from signal interference.
For example, the interference detection device may transmit the aforementioned warning signal to an on-board display terminal in the vehicle, and then,
furthermore, since the communication link of the vehicle networking terminal through the PC5 interface is disturbed at this time, the vehicle networking terminal may send an alarm signal through the Uu interface with the access network device (e.g., base station). Optionally, the message carrying the alarm signal may also carry a value of the current RSSI and a value of the measurement information. For example, the alarm signal is transmitted to the cloud server through signaling between the Uu interfaces, so that the cloud server can make an interference rejection decision according to the alarm signal, and the cloud server can make an interference rejection decision according to a current RSSI value and a measurement information value.
In this embodiment, two sets of determination conditions are set in the interference detection. Wherein, one group of judgment conditions is as follows: the RSSI value is greater than a second preset value, the SINR value is less than a third preset value, and the time synchronization state information indicates that the Internet of vehicles terminal is out of step, so that the interference detection device determines that the Internet of vehicles terminal is subjected to signal interference; the other set of judgment conditions is: and if the RSSI change rate is greater than the fourth preset value and the RSRP change rate is less than the fifth preset value, the interference detection device determines that the Internet of vehicles terminal is subjected to signal interference. And when any one of the two sets of conditions is satisfied, the interference detection device can be triggered to send an alarm signal. Because the two sets of conditions respectively consider the change characteristics of indexes such as RSSI, RSRP, SINR and the like when the vehicle networking terminal is subjected to signal interference from different angles. Therefore, whether the terminal of the internet of vehicles suffers signal interference or not can be detected, and the missing report rate and the false report rate of the interference detection device can be reduced.
In addition, as shown in fig. 3, the present application further provides an interference detection device 30, and fig. 3 is a schematic structural diagram of the interference detection device 30. The interference detection device 30 may be used to perform the method in the corresponding embodiment of fig. 2 above. The interference detection device 30 may be a vehicle-mounted unit OBU or a functional module in the vehicle-mounted unit OBU, or may also be a vehicle-mounted Box T-Box or a functional module in the vehicle-mounted Box T-Box, which is not limited herein.
As shown in fig. 3, the interference detection apparatus 30 may include a processor 310, a memory 320, a transceiver 330, an antenna 340, and an interface 350. The processor 310 is coupled to the memory 320, and the processor 310 is coupled to the transceiver 330. The transceiver 330 is coupled to the antenna 340 and the interface 350 is coupled to the processor 310.
The processor 310 may include a baseband processor and a Central Processing Unit (CPU), where the baseband processor is mainly configured to process a communication protocol and communication data, for example, signal data such as RSSI, RSRP, and SINR are obtained according to a V2X protocol stack. The cpu is mainly used to control the entire interference detection device 30, execute software programs, refer to data for processing the software programs, and the like. For example, the RSSI, RSRP, SINR, etc. data are processed to support the interference detection apparatus 30 to perform the actions described in the embodiment corresponding to fig. 2. The processor 310 in fig. 3 may integrate the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the interference detection apparatus 30 may include a plurality of baseband processors to adapt to different network systems, the interference detection apparatus 30 may include a plurality of central processing units to enhance the processing capability thereof, and the various components of the interference detection apparatus 30 may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. For example a Modem with a V2X protocol stack.
In addition, the central processing unit in the processor 310 may be replaced by a Network Processor (NP) or a combination of the CPU and the NP. The cpu may also be replaced with an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
In addition, the memory 320 is mainly used for storing software programs and data. The memory 320 may be separate and coupled to the processor 310. Alternatively, the memory 320 may be integrated with the processor 310, such as within one or more chips. The memory 320 can store program codes for executing the technical solutions of the embodiments of the present application, and the processor 310 controls the execution of the program codes, and various executed computer program codes can also be regarded as drivers of the processor 310. Memory 320 may include volatile memory (volatile memory), such as random-access memory (RAM); the memory 320 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HDD) or a solid-state drive (SSD); memory 320 may also comprise a combination of memories of the sort described above. The memory 320 may refer to one memory, or may include a plurality of memories.
In one implementation, the memory 320 has stored therein computer-readable instructions comprising a plurality of software modules, such as a sending module 321, a processing module 322, and a receiving module 323. After the processor 310 executes each software module, it may perform corresponding operations according to the instructions of each software module. In the present embodiment, the operation performed by one software module actually refers to the operation performed by the processor 310 according to the instruction of the software module.
Illustratively, the receiving module 323 is configured to obtain the RSSI and measurement information, for example, the RSSI and measurement information are obtained from a Modem with a V2X protocol stack. The processing module 322 is configured to determine whether the vehicle networking terminal is suffering from signal interference according to the RSSI and the measurement information.
For example, the processing module 322 is configured to determine time synchronization status information, and determine whether the vehicle-networking terminal is suffering from signal interference according to the RSSI, the measurement information and the time synchronization status information, wherein the time synchronization status information is used to indicate whether the vehicle-networking terminal is out of synchronization.
Illustratively, the sending module 321 is configured to send an alarm signal to a user equipment connected to the car networking terminal according to the RSSI and the measurement information, where the alarm signal is used to prompt a user that the car networking terminal has signal interference.
The transceiver 330 may also be referred to as a transceiver unit, a transceiver, a transceiving device, etc. Optionally, a device for implementing a receiving function in the transceiver unit may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit may be regarded as a sending unit, that is, the transceiver unit includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.
In addition, the antenna 340 is connected to the transceiver 330, and the antenna 340 may include a 4G main and auxiliary antenna, a PC5 main and auxiliary antenna, a GNSS antenna, a WIFI antenna, and the like. The specific application is not limiting.
In addition, the aforementioned interface 350 is used for connecting with a locomotive or a user terminal (e.g., a mobile device such as a mobile phone), and the interface 350 includes a USB interface, an RS232 interface, and the like. The present application is not limited in particular. The USB interface is configured to transmit an alarm signal to a user terminal (e.g., a mobile phone, a bracelet, a tablet computer, etc.) connected to the interference detection apparatus 30 or an on-board display terminal in a vehicle via a data cable; the RS232 interface is configured to transmit the alarm signal to a user terminal (e.g., a mobile phone, a bracelet, a bluetooth headset, a tablet pc, etc.) connected to the interference detection apparatus 30 through WIFI or an on-vehicle display terminal in a vehicle through wireless communication methods such as WIFI.
Fig. 4 is a schematic structural diagram of another interference detection apparatus 40 provided in the present application. The interference detection device 40 may be a vehicle-mounted unit OBU or a functional module in the vehicle-mounted unit OBU, or may also be a vehicle-mounted Box T-Box or a functional module in the vehicle-mounted Box T-Box, which is not limited herein. Specifically, the disturbance detecting device 40 includes:
an obtaining module 401, configured to obtain a received signal strength indicator RSSI, a signal to interference plus noise ratio SINR, and time synchronization state information, where the time synchronization state information is used to indicate whether the car networking terminal is out of synchronization; a determining module 402, configured to determine whether the vehicle networking terminal suffers from signal interference according to the RSSI, the SINR and the time synchronization status information.
In an optional implementation, the obtaining module 401 includes: the clock synchronization module 4011 is configured to periodically receive a time synchronization signal, where the time synchronization signal is used to calibrate a local clock of the car networking terminal; the clock synchronization module is further configured to determine the time synchronization status information according to the time synchronization signal.
In an optional implementation manner, the clock synchronization module 4011 is specifically configured to: when the time synchronization signal is not received in at least one period, or when the difference value between the clock indicated by the time synchronization signal and the local clock of the Internet of vehicles terminal is greater than a first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is out of synchronization; and when the difference value between the clock indicated by the time synchronization signal received in each period and the local clock of the Internet of vehicles terminal is less than or equal to the first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is not out of step.
In an optional implementation manner, the determining module 402 is specifically configured to: and when the value of the RSSI is greater than a second preset value, the value of the SINR is less than a third preset value, and the time synchronization state information indicates that the vehicle networking terminal is out of step, determining that the vehicle networking terminal is subjected to signal interference. Optionally, the time synchronization signal is a signal from a global navigation satellite system GNSS.
In an optional implementation manner, the obtaining module 401 is further configured to obtain received power RSRP; the determining module 402 is further configured to determine whether the vehicle networking terminal suffers from signal interference according to a change rate of the RSSI value within a preset time range and a change rate of the RSRP value within the preset time range.
In an optional implementation manner, the determining module 402 is specifically configured to: and when the change rate of the RSSI within the preset time range is greater than a fourth preset value and the change rate of the RSSI within the preset time range is less than a fifth preset value, determining that the vehicle networking terminal suffers from signal interference.
Embodiments of the present application also provide a computer program product containing instructions, which when executed on a computer, cause the computer to perform the functions of the interference detection apparatus as described above.
In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.
The embodiment of the present application provides a computer-readable storage medium, which is used for storing the foregoing instructions, so that the computer may execute the instructions to implement the functions of the foregoing interference detection apparatus.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here. It should also be understood that reference herein to first, second, third, fourth, and various numerical designations is made only for ease of description and is not intended to limit the scope of the embodiments of the present application.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply any order of execution, and the order of execution of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (14)

1. A signal interference detection method is applied to a vehicle networking terminal and is executed by an interference detection device in the vehicle networking terminal, and is characterized by comprising the following steps:
acquiring Received Signal Strength Indication (RSSI), signal to interference plus noise ratio (SINR) and time synchronization state information, wherein the time synchronization state information is used for indicating whether the vehicle networking terminal is out of step or not;
and determining whether the Internet of vehicles terminal is subjected to signal interference according to the RSSI, the SINR and the time synchronization state information.
2. The method of claim 1, wherein the obtaining time synchronization status information comprises:
periodically receiving a time synchronization signal, wherein the time synchronization signal is used for calibrating a local clock of the Internet of vehicles terminal;
and determining the time synchronization state information according to the time synchronization signal.
3. The method of claim 2, wherein the determining the time synchronization status information from the time synchronization signal comprises:
when the time synchronization signal is not received in at least one period, or when the difference value between the clock indicated by the time synchronization signal and the local clock of the Internet of vehicles terminal is greater than a first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is out of step;
and when the difference value between the clock indicated by the time synchronization signal received in each period and the local clock of the Internet of vehicles terminal is less than or equal to the first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is not out of step.
4. The method according to any one of claims 1 to 3, wherein the determining whether the vehicle networking terminal is suffering from signal interference according to the RSSI, the SINR and the time synchronization status information comprises:
and when the value of the RSSI is greater than a second preset value, the value of the SINR is less than a third preset value, and the time synchronization state information indicates that the Internet of vehicles terminal is out of step, determining that the Internet of vehicles terminal is subjected to signal interference.
5. The method according to any of claims 1 to 4, wherein the time synchronization signal is a signal from a Global Navigation Satellite System (GNSS).
6. The method according to any one of claims 1 to 5, further comprising:
acquiring received power RSRP;
and determining whether the vehicle networking terminal suffers from signal interference according to the change rate of the RSSI value in a preset time range and the change rate of the RSRP value in the preset time range.
7. The method of claim 6, wherein determining whether the vehicle networking terminal is subject to signal interference based on the rate of change of the RSSI within a preset time range and the rate of change of the RSSI within a preset time range comprises:
and when the change rate of the RSSI within the preset time range is greater than a fourth preset value and the change rate of the RSSI within the preset time range is less than a fifth preset value, determining that the vehicle networking terminal suffers from signal interference.
8. An interference detection device, interference detection device is located car networking terminal, its characterized in that includes:
the system comprises an acquisition module, a synchronization module and a synchronization module, wherein the acquisition module is used for acquiring Received Signal Strength Indication (RSSI), signal-to-interference-plus-noise ratio (SINR) and time synchronization state information, and the time synchronization state information is used for indicating whether the vehicle networking terminal is out of step;
and the determining module is used for determining whether the vehicle networking terminal suffers signal interference according to the RSSI, the SINR and the time synchronization state information.
9. The interference detection device according to claim 8, wherein the obtaining module comprises:
the clock synchronization module is used for periodically receiving a time synchronization signal, and the time synchronization signal is used for calibrating a local clock of the Internet of vehicles terminal;
the clock synchronization module is further configured to determine the time synchronization state information according to the time synchronization signal.
10. The interference detection device according to claim 9, wherein the clock synchronization module is specifically configured to:
when the time synchronization signal is not received in at least one period, or when the difference value between the clock indicated by the time synchronization signal and the local clock of the Internet of vehicles terminal is greater than a first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is out of step;
and when the difference value between the clock indicated by the time synchronization signal received in each period and the local clock of the Internet of vehicles terminal is less than or equal to the first preset value, determining that the time synchronization state information indicates that the Internet of vehicles terminal is not out of step.
11. The interference detection apparatus according to any one of claims 8 to 10, wherein the determining module is specifically configured to:
and when the value of the RSSI is greater than a second preset value, the value of the SINR is less than a third preset value, and the time synchronization state information indicates that the Internet of vehicles terminal is out of step, determining that the Internet of vehicles terminal is subjected to signal interference.
12. The interference detection device according to any one of claims 8 to 11,
the acquisition module is further configured to acquire received power RSRP;
the determining module is further configured to determine whether the vehicle networking terminal suffers signal interference according to a change rate of the value of the RSSI within a preset time range and a change rate of the value of the RSRP within a preset time range.
13. The interference detection apparatus according to claim 12, wherein the determining module is specifically configured to:
and when the change rate of the RSSI within the preset time range is greater than a fourth preset value and the change rate of the RSSI within the preset time range is less than a fifth preset value, determining that the vehicle networking terminal is subjected to signal interference.
14. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 7.
CN202110171262.4A 2021-02-08 2021-02-08 Signal interference detection method and interference detection device Pending CN114915992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110171262.4A CN114915992A (en) 2021-02-08 2021-02-08 Signal interference detection method and interference detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110171262.4A CN114915992A (en) 2021-02-08 2021-02-08 Signal interference detection method and interference detection device

Publications (1)

Publication Number Publication Date
CN114915992A true CN114915992A (en) 2022-08-16

Family

ID=82761388

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110171262.4A Pending CN114915992A (en) 2021-02-08 2021-02-08 Signal interference detection method and interference detection device

Country Status (1)

Country Link
CN (1) CN114915992A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296339A (en) * 1999-11-10 2001-05-23 日本电气株式会社 Mobile telephone device with interference test function
CN102177666A (en) * 2008-10-07 2011-09-07 爱立信电话股份有限公司 User terminal assisted out-of-synchronization detection
CN103581957A (en) * 2012-07-25 2014-02-12 中国移动通信集团公司 Interference detection method, device and system
CN103856971A (en) * 2012-11-30 2014-06-11 国际商业机器公司 Method for detecting wireless interference and equipment thereof
US20150126181A1 (en) * 2012-05-14 2015-05-07 Gemalto M2M Gmbh Method of detecting a jamming transmitter affecting a communication user equipment, device and user equipment and system with the user equipment
CN110719117A (en) * 2018-07-12 2020-01-21 硅实验室公司 Radio frequency receiver apparatus with interference detection and related methods
CN112313985A (en) * 2018-08-09 2021-02-02 富士通株式会社 Wireless link detection method, device and communication system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296339A (en) * 1999-11-10 2001-05-23 日本电气株式会社 Mobile telephone device with interference test function
CN102177666A (en) * 2008-10-07 2011-09-07 爱立信电话股份有限公司 User terminal assisted out-of-synchronization detection
US20150126181A1 (en) * 2012-05-14 2015-05-07 Gemalto M2M Gmbh Method of detecting a jamming transmitter affecting a communication user equipment, device and user equipment and system with the user equipment
CN103581957A (en) * 2012-07-25 2014-02-12 中国移动通信集团公司 Interference detection method, device and system
CN103856971A (en) * 2012-11-30 2014-06-11 国际商业机器公司 Method for detecting wireless interference and equipment thereof
CN110719117A (en) * 2018-07-12 2020-01-21 硅实验室公司 Radio frequency receiver apparatus with interference detection and related methods
CN112313985A (en) * 2018-08-09 2021-02-02 富士通株式会社 Wireless link detection method, device and communication system

Similar Documents

Publication Publication Date Title
CN108632347B (en) Method of detecting vehicle collision at vehicle and vehicle telematics apparatus
US9264112B2 (en) Method for operating a communications system in wireless vehicle-to-environment communication, and communication system
US8169338B2 (en) Inter-vehicle communication feature awareness and diagnosis system
US7433773B2 (en) Vehicle on-board unit
CN103680211B (en) A kind of Xijiang River based on big-dipper satellite water channel shipping monitoring system
CN109196566B (en) Auxiliary system and method for transmitting data relating to an accident or malfunction of a vehicle
KR20200101870A (en) Method for vehicle-to-vehicle communication
US20100299001A1 (en) Vehicle communication terminal and vehicle communication system in which radio transmissions by the vehicle communication terminals are controlled by radio communication from base stations
US9970761B2 (en) Event location analysis system and measurement processing method
JP2016128985A (en) On-vehicle machine and on-vehicle machine diagnostic system
JP6398759B2 (en) Vehicle communication equipment
US10567094B2 (en) System and method for characterizing radio and antenna performance using RSS measurements
JP2013003147A (en) Device for detecting and tracking vehicles
CN111294764B (en) Network quality detection method and device
CN109870675B (en) System and method for detecting degradation of detection capability of millimeter wave radar for vehicle
US11563503B2 (en) Vehicle Wi-Fi access point detection and mitigation
US11412363B2 (en) Context-adaptive RSSI-based misbehavior detection
US20200025858A1 (en) Apparatus and method for determining a geographical position of a vehicle
EP3217734A1 (en) Wireless device, communication method and computer readable storage medium
KR101906275B1 (en) Measurements report quality of position validation under mobile station-assisted mode of operation
CN116569606A (en) Radio map providing device and radio map acquiring and utilizing device
KR20170120420A (en) A v2v test apparatus, a test system for v2v terminal including the same and a test method for the same
CN114915992A (en) Signal interference detection method and interference detection device
JP6444179B2 (en) Communication device
US11647366B2 (en) Adaptive RSSI adjustment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination