Communication method and device of vehicle terminal

Abstract

The application provides a communication method and equipment of a vehicle-mounted terminal, and relates to the technical field of communication. The method comprises the following steps: the vehicle-mounted terminal receives a power control parameter sent by a target radio access network equipment; the vehicle-mounted terminal acquires target attribute information stored locally, wherein the target attribute information comprises an amplification parameter of a transmitting power amplifier; the vehicle-mounted terminal determines a current transmitting power of the vehicle-mounted terminal according to the power control parameter and the amplification parameter; and the vehicle-mounted terminal sends a first wireless signal to an external equipment through the current transmitting power, so that the external equipment sends the first wireless signal to the target radio access network equipment after power amplification by the transmitting power amplifier. The application installs the external equipment with the transmitting power amplifier on the vehicle-mounted terminal, so as to send the signal transmitted by the vehicle-mounted terminal to the radio access network equipment after power amplification, which helps to improve the probability of receiving the signal by the radio access network equipment and ensures the normal communication between the vehicle-mounted terminal and the radio access network equipment.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication method and device for a vehicle-mounted terminal. Background Technology

[0002] With the rapid development of communication technology, it can be widely applied in various scenarios. For example, in-vehicle terminals can be used in various types of vehicles. These terminals can connect to wireless access network devices, allowing users to access network services. In-vehicle terminals can perform voice dispatch, video dispatch, and data dispatch functions. Applications can also be installed on the terminals to access network services.

[0003] It can be seen that the functions or services provided by the vehicle-mounted terminal all require normal communication with the wireless access network equipment to be realized. Therefore, how to ensure normal communication between the vehicle-mounted terminal and the wireless access network equipment as much as possible is an urgent problem to be solved. Summary of the Invention

[0004] This application provides a communication method and device for an in-vehicle terminal to ensure normal communication between the in-vehicle terminal and the wireless access network device as much as possible.

[0005] In a first aspect, this application provides a communication method for a vehicle-mounted terminal, applied to a vehicle-mounted terminal, wherein an external device is connected to the vehicle-mounted terminal, and the external device is equipped with a transmit power amplifier; the method includes:

[0006] The vehicle-mounted terminal receives power control parameters sent by the target wireless access network device;

[0007] The vehicle-mounted terminal acquires locally stored target attribute information, which includes the amplification parameters of the transmit power amplifier.

[0008] The vehicle-mounted terminal determines its current transmission power based on the power control parameters and the amplification parameters.

[0009] The vehicle-mounted terminal sends a first wireless signal to the external device using the current transmission power, so that the external device amplifies the first wireless signal using the transmission power amplifier and then sends it to the target wireless access network device.

[0010] Optionally, the method further includes:

[0011] The vehicle-mounted terminal determines the maximum equivalent transmission power based on the amplification parameters of the transmission power amplifier and the maximum transmission power of the vehicle-mounted terminal. The maximum equivalent transmission power is used to represent the maximum transmission power of the equivalent terminal formed by the external device and the vehicle-mounted terminal.

[0012] The vehicle-mounted terminal transmits the maximum equivalent transmit power to the target radio access network device, and the maximum equivalent transmit power is used to assist the target radio access network device in making cell handover decisions and / or power control for the equivalent terminal.

[0013] Optionally, the target attribute information further includes the frequency bands supported by the external device, and before the vehicle terminal receives the power control parameters sent by the target wireless access network device, it further includes:

[0014] The vehicle-mounted terminal searches for at least one wireless access network device whose frequency band matches the supported frequency band.

[0015] The vehicle-mounted terminal determines the target wireless access network device from the at least one wireless access network device based on the signal quality of the at least one wireless access network device;

[0016] The vehicle-mounted terminal connects to the target wireless access network device.

[0017] Optionally, the method further includes:

[0018] After the vehicle terminal is started, if it detects that an external device is connected to the vehicle terminal, the vehicle terminal obtains the target device identifier of the external device.

[0019] If the target device identifier exists in the device information list pre-stored by the vehicle terminal, the vehicle terminal obtains the target attribute information corresponding to the target device identifier from the device information list. The device information list is used to store the attribute information of multiple external devices that the vehicle terminal can support.

[0020] The vehicle-mounted terminal stores the target attribute information locally.

[0021] Optionally, the method further includes:

[0022] If the target device identifier is not in the device information list pre-stored by the vehicle terminal, and the vehicle terminal was connected to an external device when it was last started, then the vehicle terminal deletes the target attribute information stored locally.

[0023] Optionally, the external device further includes a receiving power amplifier, and the method further includes:

[0024] The vehicle-mounted terminal receives a fourth wireless signal sent by the external device. The fourth wireless signal is a wireless signal obtained by amplifying the third wireless signal using the receiving power amplifier. The third wireless signal is sent by the target wireless access network device to the external device.

[0025] Secondly, this application provides a communication device for a vehicle-mounted terminal, wherein an external device is connected to the vehicle-mounted terminal, and the external device is equipped with a transmit power amplifier. The external device is used to amplify the signal transmitted by the vehicle-mounted terminal through the transmit power amplifier and then transmit it to a target wireless access network device; wherein the communication device of the vehicle-mounted terminal includes:

[0026] The power control parameter receiving module is used to receive power control parameters sent by the target wireless access network device.

[0027] The attribute acquisition module is used to acquire target attribute information stored locally, including the amplification parameters of the transmit power amplifier.

[0028] The current transmit power determination module is used to determine the current transmit power of the vehicle terminal based on the power control parameters and the amplification parameters;

[0029] A signal transmission module is used to transmit a first wireless signal to the external device using the current transmission power.

[0030] Optionally, the communication device of the vehicle-mounted terminal further includes:

[0031] The maximum equivalent power determination module is used to determine the maximum equivalent transmission power based on the amplification parameters of the transmission power amplifier and the maximum transmission power of the vehicle terminal. The maximum equivalent transmission power is used to represent the maximum transmission power of the equivalent terminal formed by the external device and the vehicle terminal.

[0032] The maximum equivalent power transmission module is used to transmit the maximum equivalent transmission power to the target radio access network device, wherein the maximum equivalent transmission power is used to assist the target radio access network device in making cell handover decisions and / or power control for the equivalent terminal.

[0033] Optionally, the target attribute information may also include the frequency bands supported by the external device, and the communication device of the vehicle terminal may further include:

[0034] A frequency band search module is used to search for at least one wireless access network device whose frequency band matches the supported frequency band before receiving power control parameters sent by the target wireless access network device.

[0035] An access network device determination module is configured to determine the target wireless access network device from the at least one wireless access network device based on the signal quality of the at least one wireless access network device;

[0036] An access module is used to access the target wireless access network device.

[0037] Optionally, the communication device of the vehicle-mounted terminal further includes:

[0038] The target device identifier acquisition module is used to acquire the target device identifier of the external device if an external device is detected connected to the vehicle terminal after startup.

[0039] The second attribute acquisition module is used to acquire target attribute information corresponding to the target device identifier from the device information list pre-stored by the vehicle terminal if the target device identifier exists in the device information list of the vehicle terminal. The device information list is used to store attribute information of multiple external devices that the vehicle terminal can support.

[0040] The target attribute storage module is used to store the target attribute information locally.

[0041] Optionally, the communication device of the vehicle-mounted terminal further includes:

[0042] The target attribute deletion module is used to delete the locally stored target attribute information if the target device identifier is not in the device information list pre-stored in the vehicle terminal, and the vehicle terminal was connected to an external device when it was last started.

[0043] Optionally, the external device further includes a receiving power amplifier, and the communication device of the vehicle terminal further includes:

[0044] The signal receiving module is used to receive a fourth wireless signal sent by the external device. The fourth wireless signal is a wireless signal after the power amplifier amplifies the third wireless signal. The third wireless signal is sent by the target wireless access network device to the external device.

[0045] Thirdly, this application provides an in-vehicle terminal, including: a memory and a processor;

[0046] Memory; memory used to store instructions executed by a computer;

[0047] When the processor executes the computer execution instructions, it causes the vehicle terminal to implement the method described in the first aspect.

[0048] Fourthly, this application provides a computer program for implementing the method described in the first aspect.

[0049] Fifthly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor of a vehicle terminal, cause the vehicle terminal to implement the method described in the first aspect.

[0050] This application provides a communication method and device for a vehicle-mounted terminal. The method includes: the vehicle-mounted terminal receiving power control parameters sent by a target wireless access network device; the vehicle-mounted terminal acquiring locally stored target attribute information, including amplification parameters of a transmit power amplifier; the vehicle-mounted terminal determining its current transmit power based on the power control parameters and the amplification parameters; and the vehicle-mounted terminal sending a first wireless signal to an external device using the current transmit power, so that the external device amplifies the first wireless signal using the transmit power amplifier before sending it to the target wireless access network device. Embodiments of this application can install an external device with a transmit power amplifier on the vehicle-mounted terminal. The transmit power amplifier amplifies the signal transmitted by the vehicle-mounted terminal before sending it to the wireless access network device. This increases the probability that the wireless access network device receives the signal, thereby ensuring normal communication between the vehicle-mounted terminal and the wireless access network device as much as possible. Attached Figure Description

[0051] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0052] Figure 1 This is a schematic diagram of the architecture of the mobile communication system used in the embodiments of this application;

[0053] Figure 2 This is a schematic diagram of the structure of an equivalent terminal formed by installing external devices on the vehicle terminal provided in this application embodiment;

[0054] Figure 3 This is a flowchart illustrating the steps of a communication method for a vehicle-mounted terminal provided in an embodiment of this application;

[0055] Figure 4 This is a schematic diagram of wireless signal transmission between an equivalent terminal and a target wireless access network device provided in an embodiment of this application;

[0056] Figure 5 This is a schematic diagram illustrating the target attribute information processing process after the vehicle terminal is started, according to an embodiment of this application.

[0057] Figure 6 This is a schematic diagram of the structure of a communication device for a vehicle-mounted terminal provided in an embodiment of this application;

[0058] Figure 7 This is a structural block diagram of an electronic device provided in an embodiment of this application.

[0059] Figure 8 This is a structural block diagram of another electronic device provided in the embodiments of this application.

[0060] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0061] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0062] Figure 1 This is a schematic diagram of the architecture of the mobile communication system used in the embodiments of this application. Figure 1 As shown, the mobile communication system includes core network equipment 110, radio access network equipment 120, and at least one vehicle-mounted terminal (e.g., Figure 1 The vehicle-mounted terminals 130 and 140 are shown in the diagram. The vehicle-mounted terminals connect wirelessly to the wireless access network equipment, which in turn connects wirelessly or via a wired connection to the core network equipment. The core network equipment and the wireless access network equipment can be independent physical devices, or they can integrate the functions of the core network equipment and the logical functions of the wireless access network equipment onto the same physical device. Alternatively, a single physical device can integrate some of the functions of the core network equipment and some of the functions of the wireless access network equipment. The vehicle-mounted terminals can be fixed in location or mobile. Figure 1 This is just an illustration; the communication system may also include other wireless access network devices, such as wireless repeaters and wireless backhaul devices. Figure 1 Not shown in the diagram. The embodiments of this application do not limit the number of core network devices, radio access network devices, and vehicle-mounted terminals included in the mobile communication system.

[0063] A wireless access network device is an access device that enables a vehicle-mounted terminal to wirelessly access the mobile communication system. It can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. It can also be a module or unit that performs some of the functions of a base station; for example, it can be a central unit (CU) or a distributed unit (DU). The embodiments in this application do not limit the specific technology or device form used in the wireless access network device.

[0064] In the embodiments of this application, the apparatus for implementing the functions of a wireless access network device can be a wireless access network device itself; it can also be an apparatus capable of supporting the wireless access network device in implementing the functions, such as a chip system. This apparatus can be installed in or used in conjunction with the wireless access network device. In the technical solutions provided in the embodiments of this application, the example of a wireless access network device as the apparatus for implementing the functions of the wireless access network device is used to describe the technical solutions provided in the embodiments of this application.

[0065] The aforementioned vehicle-mounted terminal can be widely used in various types of vehicles, including large vehicles, medium vehicles, and small vehicles. Large vehicles can be buses, shuttle buses, or container trucks; medium vehicles can be Iveco vans; and small vehicles can be SUVs or sedans.

[0066] It is evident that a significant difference between vehicle-mounted terminals and other conventional terminals is that vehicle-mounted terminals typically move with the vehicle, resulting in a larger operational range. During this movement, the vehicle-mounted terminal may move to the edge of the coverage area of ​​the wireless access network equipment, or to locations with poor network coverage. In these locations, the wireless access network equipment often has difficulty receiving the signals transmitted by the vehicle-mounted terminal, thus preventing the vehicle-mounted terminal from communicating with the wireless access network equipment.

[0067] In practical applications, the aforementioned problems are more common in dedicated LTE networks than in LTE networks because the coverage of dedicated LTE (long term evolution) networks is worse than that of LTE networks.

[0068] To address the aforementioned issues, an external device equipped with a transmit power amplifier can be installed on the vehicle-mounted terminal. This amplifier amplifies the signal transmitted by the vehicle-mounted terminal before sending it to the wireless access network (WLAN) device. This increases the probability that the WLAN device will receive the signal, thereby ensuring normal communication between the vehicle-mounted terminal and the WLAN device as much as possible.

[0069] Figure 2 This is a schematic diagram of the structure of an equivalent terminal formed by connecting an external device to the vehicle-mounted terminal provided in this application embodiment. (Refer to...) Figure 2 As shown, the equivalent terminal 200 may include the aforementioned vehicle-mounted terminal 201 and external device 202.

[0070] The external device 202 is detachably installed on the vehicle terminal 201, and the vehicle terminal 201 and the external device 202 are connected via a data cable. This means that the vehicle terminal already installed in the vehicle does not need to be removed and replaced with a new one; only the external device needs to be connected via the data cable. Thus, not only can vehicle terminals with external devices be installed in new vehicles, but external devices can also be installed in vehicles that already have vehicle terminals installed, maximizing communication between vehicle terminals and wireless access network equipment in various vehicles and expanding the application scenarios of this embodiment.

[0071] The aforementioned external device can be a finished product with a transmit power amplifier 2021 and a receive power amplifier 2022 internally installed, or it can be a virtual external device consisting of a separate transmit power amplifier 2021 and a receive power amplifier 2022.

[0072] The transmitting power amplifier amplifies the wireless signal sent by the external device and then sends it to the wireless access network device, while the receiving power amplifier amplifies the wireless signal sent by the wireless access network device and then sends it to the vehicle terminal.

[0073] Based on the above Figure 2 The equivalent terminal shown below can be combined with the following specific embodiments. Similar or identical concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0074] Figure 3 This is a flowchart illustrating the steps of a communication method for a vehicle-mounted terminal according to an embodiment of this application, applied to the aforementioned vehicle-mounted terminal. (Refer to...) Figure 3 As shown, the communication method of the vehicle terminal includes S301 to S304.

[0075] S301: The vehicle-mounted terminal receives power control parameters sent by the target wireless access network device.

[0076] Among them, the target wireless access network device is the wireless access network device that the vehicle terminal is currently connected to. The target wireless access network device can control the transmission power of the terminal device through power control parameters, so as to ensure that the target wireless access network device can receive the wireless signal sent by the terminal device while saving the power of the terminal device.

[0077] In the prior art, power control parameters are used to indicate the power adjustment range of the terminal device, for example, increasing or decreasing by 2dB. Upon receiving the power control parameters, the terminal device increases or decreases its transmission power by 2dB based on its previous transmission power. The terminal device in the prior art is typically a standalone device, such as a mobile phone or an in-vehicle terminal.

[0078] In this embodiment, the terminal device is an equivalent terminal consisting of a vehicle-mounted terminal and an external device. The aforementioned power control parameters are used to indicate the power adjustment range of the equivalent terminal. For example, the transmit power of the equivalent terminal can be increased by 2dB or decreased by 2dB.

[0079] S302: The vehicle terminal obtains the target attribute information stored locally, which includes the amplification parameters of the transmit power amplifier.

[0080] The target attribute information is stored locally on the vehicle terminal after each startup. Specifically, after startup, the vehicle terminal first checks if an external device is connected. If an external device is detected, the vehicle terminal obtains the target device identifier of that external device. Then, the vehicle terminal determines whether the target device identifier exists in a pre-stored device information list. If the target device identifier exists in the pre-stored device information list, the vehicle terminal retrieves the target attribute information corresponding to the target device identifier from the device information list; the vehicle terminal then stores this target attribute information locally.

[0081] Specifically, when the vehicle terminal receives transmitted data from the data line connecting the two, the vehicle terminal can determine that there is an external device currently connected. Then, the vehicle terminal can read the target device identifier of the vehicle device from the specified address bit of the data line.

[0082] As can be seen, the aforementioned device information list stores the attribute information of multiple external devices supported by the vehicle terminal. The device identifier in the device information list is the index field of this table, and the attribute information of the corresponding external device can be obtained based on this index field. This device information list is stored in the vehicle terminal before it leaves the factory. This device information list is read-only and cannot be deleted, modified, or added.

[0083] Understandably, the vehicle terminal stores the target attribute information of the currently installed external device locally after each startup. Therefore, until the vehicle terminal is shut down, the target attribute information stored locally remains that of the external device, and the wireless signal transmitted by the vehicle terminal always needs to be amplified by the external device's transmit power amplifier.

[0084] Of course, after the vehicle terminal restarts, it will also detect the currently installed external devices. Upon restarting, the vehicle terminal will again follow the same process, storing the attribute information of the same external device locally as the target attribute information.

[0085] If the same external device is never removed from the vehicle terminal, the target attribute information stored before and after startup will be the attribute information of the same external device, so that the transmission power amplifier of the same external device can be used to amplify the transmission power of the vehicle terminal. This continues until the external device is removed from the vehicle terminal.

[0086] If a different external device is used before the next startup, the attribute information of the new external device will be stored locally as the target attribute information after startup, so that the transmit power amplifier of the new external device can be used to amplify the transmit power of the vehicle terminal.

[0087] If the external device is removed or replaced with a new one before the next startup, then after startup, if the external device is not detected or the target device identifier is not in the device information list pre-stored by the vehicle terminal, the vehicle terminal will send the wireless signal directly to the target wireless access network device instead of the external device.

[0088] Optionally, if no external device is detected after this startup, it can also be determined whether an external device was connected after the last startup, that is, whether the target attribute information is stored locally.

[0089] If target attribute information is stored locally, it confirms that an external device is connected after startup. In this case, the vehicle terminal can delete the locally stored target attribute information. This saves storage space on the external device and avoids transmitting wireless signals as if an external device were present, even when none exists. In the absence of an external device, if the target attribute information is not deleted, the vehicle terminal adjusts its transmission power based on the amplification parameters in the target attribute information. Since the amplification parameters have an amplification function, the adjusted transmission power is a reduced power based on the amplification parameters. This reduced power cannot be amplified by the external device's transmission power amplifier, potentially causing the transmitted wireless signal to be unreceived by the target wireless access network device, resulting in communication abnormalities.

[0090] If the target attribute information is not stored locally, it means that no external device has been connected since the last startup, and there is no need to delete the target attribute information.

[0091] Understandably, when no external device is detected or the target device identifier is not in the device information list pre-stored by the vehicle terminal, the vehicle terminal will send the wireless signal directly to the target wireless access network device, rather than to the external device, regardless of whether there is target attribute information.

[0092] In this embodiment of the application, in order to avoid interference with other nearby devices when removing the external device, the installation and removal of the external device must be carried out with the external device and the vehicle terminal turned off, that is, hot-swapping of the external device is not supported.

[0093] In addition, to ensure the robustness of external devices, the signal input of external devices is protected, so that the external devices will not be damaged even if the user performs a hot-swapping operation while the device is powered on.

[0094] S303: The vehicle-mounted terminal determines its current transmit power based on the power control parameters and amplification parameters.

[0095] In this embodiment, the target wireless access network device considers the vehicle-mounted terminal and the external device as an equivalent terminal, thus the power control parameter is a power control parameter for the equivalent terminal. The vehicle-mounted terminal records the transmit power of the equivalent terminal each time.

[0096] Based on the power control parameters of the equivalent terminal mentioned above, and since the amplification parameters of the transmit power amplifier are fixed, the process of adjusting the power of the equivalent terminal according to its power control parameters is also the process of determining the current transmit power of the vehicle-mounted terminal based on these parameters. Specifically, this may include the following processes:

[0097] First, the vehicle-mounted terminal determines the current transmission power of the equivalent terminal based on the previous transmission power of the equivalent terminal and the power control parameters. For example, if the previous transmission power of the equivalent terminal was 25dBm, and the power control parameters are used to instruct the equivalent terminal to reduce its transmission power by 2dB, then the current transmission power of the equivalent terminal can be 25dBm - 2dB = 23dBm.

[0098] Then, the vehicle-mounted terminal determines its current transmission power based on the equivalent terminal's current transmission power and amplification parameters. Specifically, the vehicle-mounted terminal's current transmission power is the difference between the equivalent terminal's current transmission power and the amplification parameters. For example, if the equivalent terminal's current transmission power is 23dBm and the amplification parameter is 3dB, then the vehicle-mounted terminal's current transmission power could be 23dBm - 3dB = 20dBm.

[0099] S304: The vehicle-mounted terminal sends a first wireless signal to an external device using the current transmission power, so that the external device amplifies the power of the first wireless signal through a transmission power amplifier and then sends it to the target wireless access network device.

[0100] The first wireless signal can be any communication data that the vehicle-mounted terminal wants to send to the target wireless access network device.

[0101] As can be seen, the embodiments of this application can not only amplify the transmission power of the vehicle terminal through the external device's transmit power amplifier so that the target wireless access network device can receive the wireless signal, but also perform power control based on the equivalent terminal. Thus, the actual power of the wireless signal received by the target wireless access network device can be made to match the target power desired by the target wireless access network device.

[0102] In practical applications, the target radio access network device also needs to obtain the maximum transmit power of the terminal device in order to make cell handover decisions or power control for the terminal device based on this maximum transmit power. In the prior art, the terminal device is an independent device, such as a mobile phone, so the maximum transmit power of the terminal device is also the maximum transmit power of the mobile phone itself.

[0103] However, in this embodiment, the terminal device is not an independent device, but an equivalent terminal consisting of a vehicle-mounted terminal and an external device. Therefore, the maximum transmit power that the target access network device needs to obtain is the maximum transmit power of the equivalent terminal.

[0104] Specifically, firstly, the vehicle-mounted terminal can determine the maximum equivalent transmission power based on the amplification parameters of the transmission power amplifier and the maximum transmission power of the vehicle-mounted terminal. This maximum equivalent transmission power is used to represent the maximum transmission power of the equivalent terminal formed by the external device and the vehicle-mounted terminal. Then, the vehicle-mounted terminal sends the maximum equivalent transmission power to the target radio access network device. This maximum equivalent transmission power is used to assist the target radio access network device in making cell handover decisions and / or power control for the equivalent terminal.

[0105] The maximum equivalent transmit power can be the sum of the amplification parameters of the external device and the maximum transmit power of the vehicle terminal.

[0106] The embodiments of this application can perform power control on the equivalent terminal using the maximum equivalent transmit power of the equivalent terminal, ensuring that the maximum equivalent transmit power used for power control corresponds to the equivalent terminal targeted by the power control, thereby helping to improve the accuracy of power control.

[0107] Optionally, the target attribute information also includes the supported frequency bands of the external device. That is, if the external device is detected each time the vehicle-mounted device starts up, the supported frequency bands of the external device also need to be recorded. Therefore, before receiving the power control parameters sent by the target radio access network device, the vehicle-mounted terminal needs to access the target radio access network device according to the supported frequency bands. This process can be understood as a frequency locking process for the vehicle-mounted terminal. Specifically, this access process may include the following steps:

[0108] First, the vehicle-mounted terminal searches for at least one wireless access network device whose frequency band matches that of a supported frequency band.

[0109] Then, the vehicle-mounted terminal determines the target wireless access network device from among at least one wireless access network device based on the signal quality of at least one wireless access network device. Here, signal quality refers to the signal strength of the wireless access network device at the location of the vehicle-mounted terminal; higher signal strength indicates better signal quality, thus the target wireless access network device can be a wireless access network device with higher signal quality.

[0110] Finally, the vehicle-mounted terminal connects to the target wireless access network device.

[0111] In existing technologies, a terminal device is a standalone device, typically supporting a wide frequency band, or even the entire frequency band. However, in this embodiment, since the vehicle-mounted terminal is equipped with an external device, and the power amplifier of such an external device typically only supports power amplification for a portion of the frequency band, the vehicle-mounted terminal in this embodiment can search for only wireless access network devices matching the supported frequency band during network searching, without needing to search for wireless access network devices that do not match the supported frequency band. This ensures that the wireless signals transmitted by the vehicle-mounted terminal can be amplified by the external device as much as possible. Furthermore, since there are fewer wireless access network devices matching the supported frequency band than those matching the entire frequency band, the number of wireless access network devices that need to be matched is reduced, helping to shorten the time consumed in accessing the target wireless access network device and improving the access efficiency of the vehicle-mounted terminal.

[0112] Optionally, the aforementioned external device may also include a receiving power amplifier, so that the process by which the equivalent terminal receives the wireless signal sent by the target wireless access network device may include the following steps:

[0113] First, the external device receives the third wireless signal sent by the target wireless access network device.

[0114] Then, the external device amplifies the power of the third wireless signal using a receiving power amplifier to obtain the fourth wireless signal.

[0115] Finally, the external device sends the fourth wireless signal to the vehicle terminal.

[0116] As can be seen, the embodiments of this application can not only amplify the transmission power to ensure normal communication between the vehicle terminal and the wireless access network equipment, but also amplify the reception power to further ensure normal communication between the vehicle terminal and the wireless access network equipment.

[0117] Figure 4 This is a schematic diagram of wireless signal transmission between the equivalent terminal 200 and the target wireless access network device 120 provided in the embodiments of this application.

[0118] Reference Figure 4 As shown, when the vehicle terminal 201 needs to send the first information to the target wireless access network device 120, firstly, the vehicle terminal 201 generates the first wireless signal of the first information and sends the first wireless signal to the external device 202; the external device 202 amplifies the power of the first wireless signal through the transmit power amplifier 2021 to obtain the second wireless signal; finally, the transmit power amplifier sends the second wireless signal to the target wireless access network device 120.

[0119] When the target wireless access network device 120 sends the second information to the vehicle terminal 201, firstly, the external device 202 receives the third wireless signal transmitted by the target wireless access network device 120, which is generated by the target wireless access network device 120 for the second information; then, the external device 202 amplifies the power of the third wireless signal through the receiving power amplifier 2022 to obtain a fourth wireless signal; finally, the receiving power amplifier 2022 sends the fourth wireless signal to the vehicle terminal 201.

[0120] Figure 5 This is a schematic diagram illustrating the target attribute information processing process after the vehicle-mounted terminal is started, as provided in an embodiment of this application. (Refer to...) Figure 5 As shown, the detailed process of this method may include the following steps:

[0121] S401: Onboard terminal starts.

[0122] S402: The vehicle terminal detects whether an external device is connected to the vehicle terminal.

[0123] Specifically, if an external device is detected, proceed to S403. If no external device is detected, proceed to S406.

[0124] S403: The vehicle terminal obtains the target device identifier of the external device.

[0125] S404: The vehicle terminal determines whether the target device identifier exists in the locally stored device information list.

[0126] Specifically, if yes, proceed to S405. If no, proceed to S408.

[0127] S405: The vehicle terminal obtains the target attribute information corresponding to the target device identifier from the device information list and stores it.

[0128] S406: Does the vehicle terminal store target attribute information locally?

[0129] Specifically, if yes, proceed to S407. If no, proceed to S408.

[0130] S407: The vehicle terminal deletes the target attribute information stored locally.

[0131] S408: Target attribute information processing completed.

[0132] In the above Figure 5 Before or after the steps shown, the vehicle terminal can perform other operations. Figure 5After the steps shown, if S302 successfully obtains the target attribute information, it is determined that the vehicle terminal has an external device installed, and thus the vehicle terminal can communicate with the target wireless access network device through the external device via the processes S303 to S305 provided in this embodiment. If S302 fails to obtain the target attribute information, it is determined that the vehicle terminal has not installed an external device, and thus the vehicle terminal can communicate directly with the target wireless access network device according to the existing communication process.

[0133] Correspondingly, Figure 3 The communication method of the vehicle-mounted terminal shown in this application embodiment also provides a communication device for the vehicle-mounted terminal. The vehicle-mounted terminal is connected to an external device, and the external device is provided with a transmit power amplifier. The external device is used to amplify the signal sent by the vehicle-mounted device through the transmit power amplifier and then send it to the target wireless access network device. Figure 6 This is a structural block diagram of a communication device for a vehicle-mounted terminal provided in an embodiment of this application. (Refer to...) Figure 6 As shown, the communication device 500 of the vehicle terminal includes: a power control parameter receiving module 501, a first attribute acquisition module 502, a current transmission power determination module 503, and a signal transmission module 504.

[0134] The power control parameter receiving module 501 is used to receive power control parameters sent by the target wireless access network device.

[0135] The first attribute acquisition module 502 is used to acquire target attribute information stored locally, the target attribute information including: the amplification parameters of the transmit power amplifier.

[0136] The current transmit power determination module 503 is used to determine the current transmit power of the vehicle terminal based on the power control parameters and the amplification parameters.

[0137] The signal transmitting module 504 is used to transmit a first wireless signal to the external device using the current transmission power.

[0138] Optionally, the communication device 500 of the vehicle terminal further includes:

[0139] The maximum equivalent power determination module is used to determine the maximum equivalent transmission power based on the amplification parameters of the transmission power amplifier and the maximum transmission power of the vehicle terminal. The maximum equivalent transmission power is used to represent the maximum transmission power of the equivalent terminal formed by the external device and the vehicle terminal.

[0140] The maximum equivalent power transmission module is used to transmit the maximum equivalent transmission power to the target radio access network device, wherein the maximum equivalent transmission power is used to assist the target radio access network device in making cell handover decisions and / or power control for the equivalent terminal.

[0141] Optionally, the target attribute information also includes the frequency bands supported by the external device, and the communication device 500 of the vehicle terminal further includes:

[0142] The frequency band search module is used to search for at least one wireless access network device whose frequency band matches the supported frequency band before receiving power control parameters sent by the target wireless access network device.

[0143] An access network device determination module is used to determine the target wireless access network device from the at least one wireless access network device based on the signal quality of the at least one wireless access network device.

[0144] An access module is used to access the target wireless access network device.

[0145] Optionally, the communication device 500 of the vehicle terminal further includes:

[0146] The target device identifier acquisition module is used to acquire the target device identifier of the external device if an external device is detected connected to the vehicle terminal after startup.

[0147] The second attribute acquisition module is used to acquire target attribute information corresponding to the target device identifier from the device information list pre-stored by the vehicle terminal if the target device identifier exists in the device information list. The device information list is used to store attribute information of multiple external devices that the vehicle terminal can support.

[0148] The target attribute storage module is used to store the target attribute information locally.

[0149] Optionally, the communication device 500 of the vehicle terminal further includes:

[0150] The target attribute deletion module is used to delete the locally stored target attribute information if the target device identifier is not in the device information list pre-stored in the vehicle terminal, and the vehicle terminal was connected to an external device when it was last started.

[0151] Optionally, the external device further includes a receiving power amplifier, and the communication device 500 of the vehicle terminal further includes:

[0152] The signal receiving module is used to receive a fourth wireless signal sent by the external device. The fourth wireless signal is a wireless signal after the power amplifier amplifies the third wireless signal. The third wireless signal is sent by the target wireless access network device to the external device.

[0153] The communication device embodiment of the above-mentioned vehicle terminal is the device embodiment corresponding to the above-mentioned method embodiment, and has the same technical effects as the method embodiment. For detailed description, please refer to the detailed description of the method embodiment. The embodiments of this application will not be repeated here.

[0154] The aforementioned vehicle-mounted terminal is an electronic device. Figure 7 This is a structural block diagram of an electronic device provided in an embodiment of this application. The electronic device 600 includes a processor 601 and a memory 602 for storing computer-executed instructions from the processor 601. When the processor 601 executes the computer-executed instructions, the electronic device performs the aforementioned functions. Figure 3 The communication method of the vehicle-mounted terminal is shown.

[0155] In addition, the electronic device also includes a receiver 603 and a transmitter 604. The receiver 603 is used to receive information from other devices or equipment and forward it to the processor 601, and the transmitter 604 is used to send information to other devices or equipment.

[0156] Furthermore, Figure 8 This is a structural block diagram of another electronic device provided in the embodiments of this application. The electronic device 900 can be a vehicle terminal. Figure 8 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0157] like Figure 8 As shown, the electronic device 900 may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 901, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 902 or a program loaded from a storage device 908 into a random access memory (RAM) 903. The RAM 903 also stores various programs and data required for the operation of the electronic device 900. The processing unit 901, ROM 902, and RAM 903 are interconnected via a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0158] Typically, the following devices can be connected to I / O interface 905: input devices 906 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 907 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 908 including, for example, magnetic tapes, hard disks, etc.; and communication devices 909. Communication device 909 allows electronic device 900 to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 8 An electronic device 900 with various devices is shown; however, it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed alternatively.

[0159] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 909, or installed from a storage device 908, or installed from a ROM 902. When the computer program is executed by the processing device 901, it performs the functions defined in the methods of the embodiments of this application.

[0160] It should be noted that the computer-readable medium described above in this application can be a computer-readable signal medium, a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0161] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device.

[0162] The aforementioned computer-readable medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to perform the methods shown in the above embodiments.

[0163] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof. These programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—and conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0164] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0165] The units described in the embodiments of this application can be implemented in software or in hardware. The name of a unit does not necessarily limit the unit itself; for example, the first acquisition unit can also be described as "a unit that acquires at least two Internet Protocol addresses".

[0166] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0167] In the context of this application, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0168] This application also provides a computer program for implementing the foregoing. Figure 3 The communication method of the vehicle-mounted terminal is shown.

[0169] This application also provides a computer-readable storage medium storing computer-executable instructions. When these computer-executable instructions are executed by the processor of a vehicle terminal, the vehicle terminal performs the aforementioned functions. Figure 3 The communication method of the vehicle-mounted terminal is shown.

[0170] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0171] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A communication method for a vehicle-mounted terminal, characterized in that, The method, applied to an in-vehicle terminal, wherein an external device is connected to the in-vehicle terminal and the external device contains a transmit power amplifier, includes: The vehicle-mounted terminal receives power control parameters sent by the target wireless access network device; The vehicle-mounted terminal acquires locally stored target attribute information, which includes the amplification parameters of the transmit power amplifier. The vehicle-mounted terminal determines its current transmission power based on the power control parameters and the amplification parameters. The vehicle-mounted terminal sends a first wireless signal to the external device through the current transmission power, so that the external device amplifies the first wireless signal through the transmission power amplifier and then sends it to the target wireless access network device. The method further includes: The vehicle-mounted terminal determines the maximum equivalent transmission power based on the amplification parameters of the transmission power amplifier and the maximum transmission power of the vehicle-mounted terminal. The maximum equivalent transmission power is used to represent the maximum transmission power of the equivalent terminal formed by the external device and the vehicle-mounted terminal. The vehicle-mounted terminal transmits the maximum equivalent transmit power to the target radio access network device, and the maximum equivalent transmit power is used to assist the target radio access network device in making cell handover decisions and / or power control for the equivalent terminal.

2. The method according to claim 1, characterized in that, The target attribute information also includes the frequency bands supported by the external device. Before the vehicle terminal receives the power control parameters sent by the target wireless access network device, it also includes: The vehicle-mounted terminal searches for at least one wireless access network device whose frequency band matches the supported frequency band. The vehicle-mounted terminal determines the target wireless access network device from the at least one wireless access network device based on the signal quality of the at least one wireless access network device; The vehicle-mounted terminal connects to the target wireless access network device.

3. The method according to claim 1 or 2, characterized in that, The method further includes: After the vehicle terminal is started, if it detects that an external device is connected to the vehicle terminal, the vehicle terminal obtains the target device identifier of the external device. If the target device identifier exists in the device information list pre-stored by the vehicle terminal, the vehicle terminal obtains the target attribute information corresponding to the target device identifier from the device information list. The device information list is used to store the attribute information of multiple external devices that the vehicle terminal can support. The vehicle-mounted terminal stores the target attribute information locally.

4. The method according to claim 3, characterized in that, The method further includes: If the target device identifier is not in the device information list pre-stored by the vehicle terminal, and the vehicle terminal was connected to an external device when it was last started, then the vehicle terminal deletes the target attribute information stored locally.

5. The method according to claim 1, characterized in that, The external device also includes a receiving power amplifier, and the method further includes: The vehicle-mounted terminal receives a fourth wireless signal sent by the external device. The fourth wireless signal is a wireless signal obtained by amplifying the third wireless signal using the receiving power amplifier. The third wireless signal is sent by the target wireless access network device to the external device.

6. A communication device for a vehicle-mounted terminal, characterized in that, The vehicle-mounted terminal is connected to an external device, which contains a transmit power amplifier. The external device amplifies the signal transmitted by the vehicle-mounted terminal and then transmits it to the target wireless access network device. The communication device of the vehicle-mounted terminal includes: The power control parameter receiving module is used to receive power control parameters sent by the target wireless access network device. The first attribute acquisition module is used to acquire target attribute information stored locally, the target attribute information including: the amplification parameters of the transmit power amplifier; The current transmit power determination module is used to determine the current transmit power of the vehicle terminal based on the power control parameters and the amplification parameters; A signal transmitting module is used to transmit a first wireless signal to the external device using the current transmission power; The maximum equivalent power determination module is used for the vehicle terminal to determine the maximum equivalent transmission power based on the amplification parameters of the transmission power amplifier and the maximum transmission power of the vehicle terminal. The maximum equivalent transmission power is used to represent the maximum transmission power of the equivalent terminal formed by the external device and the vehicle terminal. A maximum equivalent power transmission module is used for the vehicle-mounted terminal to transmit the maximum equivalent transmission power to the target radio access network device, wherein the maximum equivalent transmission power is used to assist the target radio access network device in making cell handover decisions and / or power control for the equivalent terminal.

7. A vehicle-mounted terminal, characterized in that, include: Memory, processor; Memory; Memory used to store instructions executed by the computer; When the processor executes the computer execution instructions, it causes the vehicle terminal to implement the method of any one of claims 1 to 5.

8. A computer program, characterized in that, The computer program is used to implement the method as described in any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by the processor of the vehicle terminal, cause the vehicle terminal to implement the method as described in any one of claims 1 to 5.

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