Vehicle-mounted multimode radio frequency system, signal transceiver and vehicle

Abstract

The invention discloses a vehicle-mounted multi-mode radio frequency system, signal receiving and transmitting equipment and a vehicle, and relates to the technical field of vehicle-mounted wireless communication, and the system comprises an antenna module, a frequency band management module, a multi-protocol processing module and a control module. The antenna module is used for receiving a plurality of wireless signals transmitted by equipment outside a vehicle and transmitting the wireless signals to the frequency band management module; the frequency band management module is connected between the antenna module and the multi-protocol processing module and is used for simultaneously performing frequency band separation and routing on the plurality of wireless signals and outputting a plurality of paths of frequency separation routing signals to the multi-protocol processing module; the multi-protocol processing module is connected with the control module and is used for processing the multiple paths of frequency sorting signals and transmitting the processed frequency sorting signals to the control module; and the control module is used for executing corresponding operation according to the processed frequency separation path separation signal. Compared with the prior art, the multi-protocol signals are transmitted and received in parallel, so that the system throughput and the multi-task real-time performance are improved.

Description

Technical Field

[0001] This application relates to the field of vehicle-mounted wireless communication technology, and in particular to a vehicle-mounted multimode radio frequency system, signal transceiver equipment, and vehicle. Background Technology

[0002] In modern intelligent connected vehicles, the in-vehicle infotainment system (Vehicle infotainment system) needs to simultaneously handle multiple concurrent external wireless signals from mobile devices, smart keys, and traffic facilities.

[0003] However, existing technical solutions have inherent drawbacks: when using time-division multiplexing processing mode, the system cannot truly process multiple signals synchronously, resulting in response delay and throughput fluctuations; when using physical module separation mode, although parallel processing can be achieved, it leads to complex system architecture, large size, high cost, and difficulty in suppressing coexisting interference. Neither of these modes effectively solves the problem of concentrated heat generation when multiple radio frequency paths (especially high-speed Wi-Fi systems) operate concurrently, thus limiting the ability of the vehicle's radio frequency front-end to achieve high concurrency, low interference, low latency, and long-term stable operation within a limited space.

[0004] Therefore, how to process multiple heterogeneous external signals simultaneously is a problem that urgently needs to be solved. Summary of the Invention

[0005] The main purpose of this application is to provide an in-vehicle multimode radio frequency system, signal transceiver equipment and vehicle, which aims to solve the technical problem of how to process multiple heterogeneous external signals simultaneously.

[0006] To achieve the above objectives, this application proposes an in-vehicle multimode radio frequency system, the system comprising: an antenna module, a frequency band management module, a multi-protocol processing module, and a control module; The antenna module is used to receive multiple wireless signals transmitted from external devices and transmit them to the frequency band management module. The frequency band management module is connected between the antenna module and the multi-protocol processing module, and is used to simultaneously perform frequency band separation and routing on the multiple wireless signals, and output multiple frequency division routing signals to the multi-protocol processing module. The multi-protocol processing module is connected to the control module and is used to process the multi-channel frequency division multiplexing signals and transmit the processed frequency division multiplexing signals to the control module. The control module is used to perform corresponding operations based on the processed frequency division multiplexing signal.

[0007] In one embodiment, the wireless signal includes non-WLAN radio frequency signals and WLAN radio frequency signals, and the antenna module includes: a composite antenna and at least two WLAN antennas; The radio frequency management module is connected to the composite antenna and at least two of the wireless local area network antennas, respectively. The composite antenna is used to receive at least two different non-WLAN radio frequency signals and transmit them to the frequency band management module. The wireless LAN antenna is used to receive wireless LAN radio frequency signals and transmit them to the frequency band management module.

[0008] In one embodiment, the frequency division multiplexing signal includes a splitting signal and a gating signal, and the frequency band management module includes a signal splitting unit and a signal gating unit; The signal splitting unit is connected between the composite antenna and the multi-protocol processing module, and is used to separate the non-wireless local area network radio frequency signal and transmit the generated separated signal to the multi-protocol processing module. The signal gating unit is connected between the wireless local area network antenna and the multi-protocol processing module, and is used to select the path of the wireless local area network radio frequency signal and transmit the generated gating signal to the multi-protocol processing module.

[0009] In one embodiment, the frequency division routing signal includes a first baseband signal and a second baseband signal, and the multi-protocol processing module includes a wireless local area network processing unit and an Internet of Things protocol processing unit; The IoT protocol processing unit is connected to the signal splitting unit and the control module respectively, and is used to process the split signal and transmit the first baseband signal obtained after processing to the control module. The wireless local area network processing unit is connected to the signal gating unit and the control module respectively, and is used to process the gating signal and transmit the processed second baseband signal to the control module.

[0010] In one embodiment, the wireless local area network processing unit includes at least two parallel radio frequency processing links; The radio frequency processing link includes: a frequency band selector, a filter, and a front-end amplifier; The frequency band selector is connected to the signal gating unit and is used to receive the gating signal; The filter is connected to the frequency band selector and the front-end amplifier respectively, and is used to filter the gating signal; The front-end amplifier is connected to the control module and is used to amplify the filtered gating signal and transmit the amplified second baseband signal to the control module.

[0011] In one embodiment, the separated signal includes an ultra-wideband radio frequency signal and a long-range radio frequency signal, the first baseband signal includes an ultra-wideband baseband signal and a long-range radio baseband signal, and the Internet of Things protocol processing unit includes an ultra-wideband protocol processing subunit and a long-range radio protocol processing subunit. The frequency band management module and the control module are respectively connected to the ultra-wideband protocol processing subunit and the long-distance radio protocol processing subunit; The ultra-wideband protocol processing subunit is used to process the ultra-wideband radio frequency signal and transmit the processed ultra-wideband baseband signal to the control module. The long-distance radio protocol processing subunit is used to process the long-distance radio frequency signal and transmit the processed long-distance radio baseband signal to the control module.

[0012] In one embodiment, the system further includes: a heat dissipation module; The heat dissipation module is connected to the multi-protocol processing module and is used to cool the multi-protocol processing module when the temperature of the multi-protocol processing module exceeds a preset threshold.

[0013] In one embodiment, the heat dissipation module includes: a temperature monitoring unit and an adjustment control unit; The multi-protocol processing module is connected to the temperature monitoring unit and the adjustment control unit respectively, and the temperature monitoring unit is also connected to the adjustment control unit; The temperature monitoring unit is used to transmit a cooling signal to the adjustment and control unit when the temperature of the multi-protocol processing module exceeds a preset threshold. The adjustment and control unit is used to cool the multi-protocol processing module according to the cooling signal.

[0014] In addition, to achieve the above objectives, this application also proposes a signal transceiver device, which includes the vehicle-mounted multimode radio frequency system as described above.

[0015] In addition, to achieve the above objectives, this application also proposes a vehicle that includes the vehicle-mounted multimode radio frequency system as described above.

[0016] This application proposes an in-vehicle multi-mode radio frequency system, comprising: an antenna module, a frequency band management module, a multi-protocol processing module, and a control module; the antenna module is used to receive multiple wireless signals transmitted from external devices and transmit them to the frequency band management module; the frequency band management module is connected between the antenna module and the multi-protocol processing module, and is used to simultaneously perform frequency band separation and routing on the multiple wireless signals, and output multiple frequency division routing signals to the multi-protocol processing module; the multi-protocol processing module is connected to the control module, and is used to process the multiple frequency division routing signals and transmit the processed frequency division routing signals to the control module; the control module is used to perform corresponding operations according to the processed frequency division routing signals.

[0017] This application incorporates an in-vehicle multi-mode radio frequency system, comprising an antenna module, a frequency band management module, a multi-protocol processing module, and a control module. The antenna module first receives multiple wireless signals transmitted from external devices and transmits them to the frequency band management module. The frequency band management module then simultaneously performs frequency band separation and routing on the multiple wireless signals, outputting multiple frequency division multiplexing (FDM) signals to the multi-protocol processing module. The multi-protocol processing module then processes the multiple FDM signals and transmits the processed FDM signals to the control module. Finally, the control module executes corresponding operations based on the processed FDM signals. Compared to existing systems, this application improves system throughput and multi-tasking real-time performance by processing multiple protocol signals in parallel. Attached Figure Description

[0018] 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.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the vehicle-mounted multimode radio frequency system proposed in this application. Figure 2 This is a schematic diagram of the structure of the second embodiment of the vehicle-mounted multimode radio frequency system proposed in this application. Figure 3 This is a schematic diagram of the third embodiment of the vehicle-mounted multimode radio frequency system proposed in this application.

[0021] Explanation of icon numbers:

[0022] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0027] It should be noted that in modern intelligent connected vehicles, the in-vehicle infotainment system (vehicle infotainment system) needs to simultaneously handle multiple concurrent external wireless signals from mobile devices, smart keys, and traffic facilities.

[0028] However, existing technical solutions have inherent drawbacks: when using time-division multiplexing processing mode, the system cannot truly process multiple signals synchronously, resulting in response delay and throughput fluctuations; when using physical module separation mode, although parallel processing can be achieved, it leads to complex system architecture, large size, high cost, and difficulty in suppressing coexisting interference. Neither of these modes effectively solves the problem of concentrated heat generation when multiple radio frequency paths (especially high-speed Wi-Fi systems) operate concurrently, thus limiting the ability of the vehicle's radio frequency front-end to achieve high concurrency, low interference, low latency, and long-term stable operation within a limited space.

[0029] Therefore, how to process multiple heterogeneous external signals simultaneously is a problem that urgently needs to be solved.

[0030] To address the aforementioned technical issues, this embodiment provides an in-vehicle multi-mode radio frequency (RF) system. This system, installed within a vehicle, includes an antenna module 1, a frequency band management module 2, a multi-protocol processing module 3, and a control module 4. The antenna module 1 first receives multiple wireless signals transmitted from external devices and transmits them to the frequency band management module 2. The frequency band management module 2 then simultaneously performs frequency band separation and routing on the multiple wireless signals, outputting multiple frequency division multiplexing (FDM) signals to the multi-protocol processing module 3. The multi-protocol processing module 3 then processes the multiple FDM signals and transmits the processed FDM signals to the control module 4. Finally, the control module 4 executes corresponding operations based on the processed FDM signals. Compared to existing systems, this embodiment improves system throughput and multi-tasking real-time performance by processing multiple protocol signals in parallel.

[0031] For ease of understanding, the following is combined with Figures 1 to 3 The in-vehicle multimode radio frequency system provided in the embodiments of this application will be described in detail.

[0032] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the vehicle-mounted multimode radio frequency system proposed in this application.

[0033] like Figure 1 As shown, in this embodiment, the system includes: an antenna module 1, a frequency band management module 2, a multi-protocol processing module 3, and a control module 4; The antenna module 1 is used to receive multiple wireless signals transmitted from external devices and transmit them to the frequency band management module 2; The frequency band management module 2 is connected between the antenna module 1 and the multi-protocol processing module 3, and is used to perform frequency band separation and routing on the multiple wireless signals simultaneously, and output multiple frequency division routing signals to the multi-protocol processing module 3. The multi-protocol processing module 3 is connected to the control module 4 and is used to process the multi-channel frequency division multiplexing signals and transmit the processed frequency division multiplexing signals to the control module 4. The control module 4 is used to perform corresponding operations based on the processed frequency division routing signal.

[0034] It should be noted that the antenna module 1 described above can be any module capable of receiving and transmitting radio waves. For example, a composite antenna 11 integrating LoRa, BLE, and UWB functions, as well as at least two independent wireless local area network antennas 12, can be used to receive signals in different frequency bands.

[0035] The aforementioned frequency band management module 2 can be any module that can separate mixed radio frequency signals by frequency band and assign independent physical paths to each signal. For example, a duplexer or frequency divider (such as a triplexer) can serve as the signal splitting unit 21, and a multi-throw radio frequency switch (such as a DP4T switch) can serve as the signal gating unit 22. The aforementioned signal splitting unit 21 and the aforementioned signal gating unit 22 constitute the aforementioned radio frequency management module.

[0036] The aforementioned multi-protocol processing module 3 can be any module capable of decoding and baseband processing radio frequency signals for multiple different communication protocol standards. For example, it can integrate a transceiver chip kit responsible for the Wi-Fi 7 protocol, an IEEE 802.15.4a module responsible for the UWB protocol, and a LoRa FEM and main chip responsible for the LoRa protocol.

[0037] The aforementioned control module 4 can be any processor or controller capable of performing logical judgments and issuing control commands based on input signals. For example, the main processor (BB SOC) in the vehicle's infotainment system is connected to the aforementioned multi-protocol processing module 3 via interfaces such as SPI and PCIe.

[0038] It is understood that the aforementioned wireless signals can be radio frequency energy carrying information that propagates through space via electromagnetic waves. For example, the aforementioned wireless signals may specifically include Wi-Fi 7 signals from mobile phones, UWB pulse signals from smart keys, and LoRa broadcast signals from infrastructure.

[0039] The aforementioned frequency band separation and routing can be the core processing actions performed by the frequency band management module 2. Frequency band separation can be achieved by using devices such as filter 3112 to extract the target sub-band signal from the mixed signal based on frequency differences; routing can be achieved by using devices such as switches to guide the separated signal to a preset physical link. For example, the signal splitting unit 21 can separate the signal received by the composite antenna 11 into a UWB path and a LoRa path.

[0040] The aforementioned frequency division routing signal can be an intermediate signal generated after the frequency band separation and routing process described above, which has been distinguished by frequency band and physical path. For example, the UWB radio frequency signal and LoRa radio frequency signal output from the aforementioned signal splitting unit 21, and the Wi-Fi signal output from the aforementioned signal gating unit 22, which is prepared to be sent to different MIMO links.

[0041] The frequency division multiplexing (FDM) signal processed as described above can be the baseband digital signal output after the FDM signal has undergone protocol demodulation and signal shaping by the multi-protocol processing module 3. For example, the ranging data output by the UWB module, the messages decoded by the LoRa chip, and the data packets recovered by the Wi-Fi transceiver can all be directly processed by the control module 4.

[0042] In its implementation, the antenna module 1 simultaneously receives radio waves (i.e., multiple wireless signals) from different devices. For example, the composite antenna 11 captures UWB pulses and LoRa broadcasts, while the wireless LAN antenna 12 receives Wi-Fi data streams and sends these signals to the frequency band management module 2. The frequency band management module 2 then processes the mixed signals in real time: its internal signal splitting unit 21 (such as a triplexer) separates the signals from the composite antenna 11 into UWB RF signals and LoRa RF signals; simultaneously, its internal signal gating unit 22 (such as a DP4T switch) dynamically allocates the Wi-Fi signals from multiple antennas to different RF links. The resulting multiple frequency division multiplexing signals are then sent in parallel to the multi-protocol processing module 3. The dedicated units (such as UWB modules, LoRa chips, Wi-Fi FEMs, and transceivers) in the multi-protocol processing module 3 work synchronously to amplify, filter, down-convert, and parse the protocols of each signal, ultimately outputting multiple processed frequency division multiplexing signals (i.e., baseband data) to the control module 4. The control module 4 integrates this information and can concurrently perform operations such as unlocking vehicle doors, connecting to the network, and updating road conditions, achieving efficient multi-task collaborative processing.

[0043] Furthermore, in order to receive and process wireless signals of vastly different characteristics using different types of antennas, continuing as... Figure 1 As shown, in this embodiment, the wireless signal includes non-WLAN radio frequency signals and WLAN radio frequency signals, and the antenna module 1 includes: a composite antenna 11 and at least two WLAN antennas 12. The radio frequency management module is connected to the composite antenna 11 and at least two wireless local area network antennas 12 respectively; The composite antenna 11 is used to receive at least two different non-WLAN radio frequency signals and transmit them to the frequency band management module 2; The wireless local area network antenna 12 is used to receive wireless local area network radio frequency signals and transmit them to the frequency band management module 2.

[0044] It should be noted that the aforementioned composite antenna 11 can be any broadband or multi-band antenna capable of operating effectively on multiple non-adjacent frequency bands simultaneously. For example, it can be an integrated antenna capable of covering 902-915MHz (LoRa), 2400-2500MHz (BLE / partial Wi-Fi), and 3500-6500MHz (UWB).

[0045] The aforementioned wireless LAN antenna 12 can be any antenna optimized for wireless LAN frequency band performance. For example, an antenna optimized for the 2400-2500MHz and 5150-7125MHz frequency bands (i.e., Wi-Fi 2.4G / 5G / 6G frequency bands) can be used to efficiently receive the aforementioned wireless LAN radio frequency signals. This embodiment requires at least two such antennas to support MIMO (Multiple-Input Multiple-Output) technology.

[0046] It is understood that the aforementioned non-WLAN radio frequency signals can be any radio frequency signal that communicates using standards other than the IEEE 802.11 series of protocols. For example, ultra-wideband (UWB) signals used for high-precision positioning (such as the IEEE 802.15.4a protocol, frequency band 3.5-6.5GHz) and long-range radio (LoRa) signals used for long-distance communication (frequency band 902-915MHz).

[0047] The aforementioned wireless local area network (WLAN) radio frequency (RF) signals can be RF signals conforming to the IEEE 802.11 series of protocol standards. For example, the Wi-Fi signal in this embodiment specifically supports the latest Wi-Fi 7 (IEEE 802.11be) protocol and covers multiple frequency bands such as 2.4GHz, 5GHz, and 6GHz.

[0048] In its implementation, the antenna module 1 employs a division of labor to cope with complex signal environments. For example, when a car enters a smart park, the mobile phone, UWB smart key, and LoRa sensors outside the car simultaneously transmit signals. At this time, the composite antenna 11 (such as ANT1) is responsible for receiving the UWB positioning pulse from the key and the LoRa status broadcast from the sensor (i.e., the aforementioned non-WLAN radio frequency signal); while the two (or more) WLAN antennas 12 (such as ANT2 and ANT3) are specifically responsible for capturing the high-speed Wi-Fi 7 data stream from the mobile phone (i.e., the aforementioned WLAN radio frequency signal). The signals received by these two types of antennas are physically separated and transmitted in parallel to the subsequent frequency band management module 2 through different connection lines.

[0049] Furthermore, in order to perform parallel processing of mixed signals from different types of antennas, the following continues... Figure 1As shown, in this embodiment, the frequency division routing signal includes a separation signal and a gating signal, and the frequency band management module 2 includes: a signal splitting unit 21 and a signal gating unit 22; The signal splitting unit 21 is connected between the composite antenna 11 and the multi-protocol processing module 3, and is used to separate the non-wireless local area network radio frequency signal and transmit the generated separated signal to the multi-protocol processing module 3. The signal gating unit 22 is connected between the wireless local area network antenna 12 and the multi-protocol processing module 3, and is used to select the path of the wireless local area network radio frequency signal and transmit the generated gating signal to the multi-protocol processing module 3.

[0050] It should be noted that the signal splitting unit 21 described above can be any unit that has the function of separating the energy of different frequency bands in the input signal to different output ports. For example, a frequency divider, whose low-frequency port outputs a BLE / 2.4GHz signal and its high-frequency port outputs a UWB signal, thereby realizing the physical separation of the signal received by the composite antenna 11.

[0051] The aforementioned signal gating unit 22 can be any unit capable of controllable switching or selection between multiple radio frequency paths. For example, a DP4T switch has multiple RFIN ports connected to different WIFI radio frequency paths and multiple RFOUT ports connected to different WIFI antennas, achieving flexible mapping between antennas and processing paths through control signals.

[0052] In its implementation, the two sub-units within the aforementioned frequency band management module 2 operate in parallel. For example, when the composite antenna 11 sends the received UWB and LoRa mixed signal to the signal splitting unit 21, the signal splitting unit 21 uses its internal filter network 3112 to sort the 3.5-6.5GHz UWB signal to its high-frequency port output and the 902-915MHz LoRa signal to its low-frequency port output, thereby generating two independent separated signals. Simultaneously, Wi-Fi signals from the two wireless LAN antennas 12 are sent to the signal gating unit 22. The signal gating unit 22 dynamically selects a specific frequency band signal from a specific antenna (e.g., the 5G signal from ANT2) and connects it to Chain0 of the backend processing link, and connects another signal (e.g., the 6G signal from ANT3) to Chain1, based on a multiple-input multiple-output and multiple-link operation scheduling strategy, thereby generating multiple controlled gating signals. Through the collaboration of the aforementioned signal splitting unit 21 and signal gating unit 22, different types of signal streams are clearly and orderly separated and scheduled at the physical layer, achieving true parallel input.

[0053] This embodiment incorporates an in-vehicle multi-mode radio frequency system, comprising: an antenna module 1, a frequency band management module 2, a multi-protocol processing module 3, and a control module 4. The antenna module 1 first receives multiple wireless signals transmitted from external devices and transmits them to the frequency band management module 2. The frequency band management module 2 then simultaneously performs frequency band separation and routing on the multiple wireless signals, outputting multiple frequency division multiplexing (FDM) signals to the multi-protocol processing module 3. The multi-protocol processing module 3 then processes the multiple FDM signals and transmits the processed FDM signals to the control module 4. Finally, the control module 4 executes corresponding operations based on the processed FDM signals. Compared to existing systems, this embodiment improves system throughput and multi-tasking real-time performance by processing multiple protocol signals in parallel.

[0054] Reference Figure 2 , Figure 2 This is a schematic diagram of the structure of the second embodiment of the vehicle-mounted multimode radio frequency system proposed in this application.

[0055] Based on the above embodiments, a second embodiment of this application is proposed. In order to convert different types of radio frequency signals from the frequency band management module 2 into baseband data that the control module 4 can directly understand and use, such as... Figure 2 As shown, in this embodiment, the frequency division routing signal includes a first baseband signal and a second baseband signal, and the multi-protocol processing module 3 includes: a wireless local area network processing unit 31 and an Internet of Things protocol processing unit 32. The IoT protocol processing unit 32 is connected to the signal splitting unit 21 and the control module 4 respectively, and is used to process the split signal and transmit the first baseband signal obtained after processing to the control module 4. The wireless local area network processing unit 31 is connected to the signal gating unit 22 and the control module 4 respectively, and is used to process the gating signal and transmit the processed second baseband signal to the control module 4.

[0056] It should be noted that the aforementioned wireless LAN processing unit 31 can be any combination of hardware circuits used to perform complete transceiver chain processing of wireless LAN radio frequency signals. For example, a 5G / 6G transceiver chipset, a front-end amplifier module (FEM), a SAW / BAW filter 3112, and a duplexer (DIP) are responsible for amplifying, filtering, spectrum shifting, and protocol processing of Wi-Fi signals.

[0057] The aforementioned IoT protocol processing unit 32 can be any unit used to process radio frequency signals of one or more non-WLAN IoT protocols. For example, a UWB module (integrating radio frequency circuitry, power management, and clock, supporting IEEE 802.15.4a) and a LoRa processing link (including a LoRa FEM and a LoRa main chip).

[0058] It is understood that the aforementioned first baseband signal can be a digital baseband signal output by the IoT protocol processing unit 32 after demodulating and decoding the aforementioned separated signal. For example, the aforementioned first baseband signal may specifically include ultra-wideband (UWB) baseband signals (such as ranging data containing precise timestamp information) and long-range radio (LoRa) baseband signals (such as decoded sensor status messages).

[0059] The aforementioned second baseband signal can be a digital baseband signal output by the wireless LAN processing unit 31 after demodulating and decoding the aforementioned gating signal. For example, the aforementioned second baseband signal can be a baseband data stream conforming to the IEEE 802.11 series of protocols (such as Wi-Fi 7), which includes the user's internet access data, media stream information, etc.

[0060] In its implementation, the multi-protocol processing module 3 receives the sorted signals from the previous stage and initiates two parallel processing pipelines. On one hand, the IoT protocol processing unit 32 starts: the two separated signals (UWB and LoRa signals) from the signal splitting unit 21 are sent to dedicated UWB modules and LoRa processing links, respectively. The UWB module captures, amplifies, and calculates the time difference of the received pulse signals to generate the UWB baseband signal containing centimeter-level positioning information; the LoRa link demodulates and decodes the received signals to recover valid sensor data and generate the LoRa baseband signal. These two baseband signals together constitute the first baseband signal and are reported to the control module 4 via control interfaces such as SPI. On the other hand, the wireless LAN processing unit 31 operates synchronously: multiple gating signals from the signal gating unit 22 (e.g., 2.4G and 5G Wi-Fi signals assigned to different MIMO links) are sent to their respective radio frequency processing links 311. The FEM in each link amplifies the signal with power or low noise. The Transceiver chip performs down-conversion and digital demodulation, and finally recovers the high-speed data packet, generating the second baseband signal mentioned above, and transmitting it to the control module 4 mentioned above through high-speed interfaces such as PCIe.

[0061] Furthermore, in order to process multiple Wi-Fi signals simultaneously, continue as follows Figure 2As shown, in this embodiment, the wireless local area network processing unit 31 includes at least two parallel radio frequency processing links 311; The radio frequency processing link 311 includes: a frequency band selector 3111, a filter 3112, and a front-end amplifier 3113; The frequency band selector 3111 is connected to the signal gating unit 22 and is used to receive the gating signal; The filter 3112 is connected to the frequency band selector 3111 and the front-end amplifier 3113 respectively, and is used to filter the gating signal; The front-end amplifier 3113 is connected to the control module 4 and is used to amplify the filtered gating signal and transmit the amplified second baseband signal to the control module 4.

[0062] It should be noted that the aforementioned radio frequency processing link 311 can be any hardware signal channel capable of independently performing a series of processing operations such as receiving, filtering, and amplifying wireless local area network (WLAN) radio frequency signals. In this embodiment, the WLAN processing unit 31 includes at least two such radio frequency processing links 311, which operate in parallel to achieve multiple-input multiple-output (MIMO).

[0063] The frequency band selector 3111 described above can be any radio frequency device that can separate and direct the energy of different frequency bands in a single input signal to different output ports. For example, a duplexer (DIP) whose COM port receives a mixed signal from a switch, outputs a 2.4 GHz band signal at the low-frequency port and a 5 GHz band signal at the high-frequency port, thus achieving preliminary frequency division of the above-mentioned gating signal.

[0064] The aforementioned filter 3112 can be any passive device used to purify radio frequency signals in a specific frequency band and suppress out-of-band interference and harmonics. For example, a surface acoustic wave (SAW) filter 3112 used for the 2.4GHz channel has low in-band insertion loss and can effectively suppress harmonic interference; for the 5G / 6G channel, a bulk acoustic wave (BAW) filter 3112 can be used to obtain better high-frequency performance.

[0065] The aforementioned front-end amplifier 3113 can be any RF integrated module that integrates a power amplifier (PA) and a low-noise amplifier (LNA) to amplify signal power during transmission and amplify weak signals while maintaining low noise during reception. For example, 2.4G FEM, 5G FEM, and 6G FEM, which operate in their respective frequency bands, are key components for achieving signal amplification and transmit / receive switching.

[0066] In its implementation, each of the aforementioned radio frequency processing links 311 of the wireless local area network processing unit 31 is independent and structurally symmetrical. For example, for one of the processing Chain 0 links: the gating signal (which may contain mixed energy of 2.4G and 5G) from the aforementioned signal gating unit 22 (such as the RFIN1 port of the DP4T switch) first enters the aforementioned band selector 3111 (such as a duplexer). This duplexer splits the 2.4G signal from its low-frequency port and the 5G signal from its high-frequency port. The split 2.4G signal then enters the aforementioned filter 3112 connected in series (such as a SAW filter 3112 with a center frequency of 2.45GHz), which filters out out-of-band noise and interference signals generated by its own harmonics. The purified 2.4G signal is then sent to the aforementioned front-end amplifier 3113 (2.4G FEM). In the receiving state, the low-noise amplifier (LNA) inside the aforementioned front-end amplifier 3113 initially amplifies the weak signal to ensure signal strength; in the transmitting state, its internal power amplifier (PA) amplifies the signal to be transmitted to sufficient power. Finally, the signal processed by the complete link is converted into the aforementioned second baseband signal and transmitted to the aforementioned control module 4. The other link processing Chain 1 processes another gating signal synchronously in the same way. The two links operate independently and in parallel, forming the basis of the 2x2 MIMO system and achieving a doubling of data throughput.

[0067] Furthermore, in order to process the signals of two very different IoT protocol types, Ultra Wideband (UWB) and LoRa, respectively, we continue as follows: Figure 2 As shown, in this embodiment, the separated signal includes an ultra-wideband radio frequency signal and a long-range radio frequency signal, the first baseband signal includes an ultra-wideband baseband signal and a long-range radio baseband signal, and the Internet of Things protocol processing unit 32 includes an ultra-wideband protocol processing subunit 321 and a long-range radio protocol processing subunit 322. The frequency band management module 2 and the control module 4 are respectively connected to the ultra-wideband protocol processing subunit 321 and the long-distance radio protocol processing subunit 322; The ultra-wideband protocol processing subunit 321 is used to process the ultra-wideband radio frequency signal and transmit the processed ultra-wideband baseband signal to the control module 4. The long-distance radio protocol processing subunit 322 is used to process the long-distance radio frequency signal and transmit the processed long-distance radio baseband signal to the control module 4.

[0068] It should be noted that the aforementioned ultra-wideband protocol processing subunit 321 can be any UWB-specific processing module that integrates RF front-end, digital processing, and control interfaces. For example, a UWB module that integrates all RF circuits, power management, and clock circuits, and supports the IEEE 802.15.4a protocol.

[0069] The aforementioned long-range radio protocol processing subunit 322 can be any combination of circuits used to complete LoRa signal transmission, reception, and processing. For example, it can include a link between a LoRa FEM (front-end module) and a LoRa main chip, with the LoRa chip connected to the main system via the SPI control protocol.

[0070] Understandably, the aforementioned ultra-wideband radio frequency (UWB) signals can be any baseband pulse radio frequency signal with an extremely wide frequency spectrum that conforms to UWB technical standards. For example, UWB signals used for high-precision positioning have a frequency range of 3.5-6.5 GHz and adopt the IEEE 802.15.4a protocol.

[0071] The aforementioned long-distance radio frequency signals can be any radio frequency signal that uses spread spectrum technology to achieve long-distance communication with low power consumption. For example, LoRa signals, whose frequency range is 902-915MHz.

[0072] The aforementioned ultra-wideband baseband signal can be any digital signal recovered after the ultra-wideband radio frequency signal is processed by the aforementioned ultra-wideband protocol processing subunit 321. For example, it may include two-way ranging or time difference positioning data (with an accuracy down to the centimeter level) and a payload with a maximum data rate of 6.8 Mbps.

[0073] The aforementioned long-range radio baseband signal can be any digital signal recovered by the long-range radio protocol processing subunit 322 after demodulating and decoding the aforementioned long-range radio frequency signal. For example, status information or control commands used for vehicle-to-infrastructure communication decoded by a LoRa chip.

[0074] In its implementation, the IoT protocol processing unit 32 processes two types of tasks in parallel. When the signal splitting unit 21 sends the ultra-wideband radio frequency signal (e.g., a 3.5-6.5 GHz pulse from a smart key) output from its high-frequency port to the ultra-wideband protocol processing subunit 321 (UWB module), the module immediately starts. Its internal radio frequency circuit captures the pulse, calculates the signal flight time through a precision timing circuit, and finally calculates the precise distance or location information to generate the ultra-wideband baseband signal. At the same time, the long-distance radio frequency signal (e.g., a 902 MHz LoRa broadcast from a smart street light) output from the low-frequency port of the signal splitting unit 21 is sent to the long-distance radio protocol processing subunit 322. The LoRa FEM of this subunit amplifies the signal, and the LoRa main chip performs despreading and demodulation to restore the data packet sent by the transmitter and generate the long-distance radio baseband signal.

[0075] Reference Figure 3 , Figure 3 This is a schematic diagram of the third embodiment of the vehicle-mounted multimode radio frequency system proposed in this application.

[0076] Based on the above embodiments, a third embodiment of this application is proposed. To allow users to understand the current capacity of the storage device in real time, such as... Figure 3 As shown, in this embodiment, the system further includes: a heat dissipation module 5; The heat dissipation module 5 is connected to the multi-protocol processing module 3 and is used to cool down the multi-protocol processing module 3 when the temperature of the multi-protocol processing module 3 exceeds a preset threshold.

[0077] It should be noted that the heat dissipation module 5 mentioned above can be any module that has the function of monitoring the temperature of the target area and actively implementing measures to reduce the temperature of the area.

[0078] The aforementioned preset threshold can be one or more temperature critical values ​​used to trigger different levels of cooling measures.

[0079] In its implementation, when multiple Wi-Fi FEMs in the multi-protocol processing module 3 generate significant heat due to continuous high-speed multiple-input multiple-output transmission, the heat dissipation module 5 monitors the PCB temperature in real time. When the monitored temperature first exceeds a first preset threshold (e.g., the upper limit of the chip's allowable operating temperature), the heat dissipation module 5 generates an instruction requiring the relevant RF transceiver to reduce the signal transmission duty cycle of the link containing the corresponding heat-generating FEM (e.g., from 100% to 60%). This directly reduces heat generation. If the temperature continues to rise and reaches a higher second preset threshold due to excessively high ambient temperature or extremely high load, the heat dissipation module 5, based on real-time signal strength assessment, retains only the single RF path with the best signal quality (e.g., only the 5G path) to continue operating, while temporarily shutting down other paths. This significantly reduces total power consumption and heat sources, achieving rapid cooling. Once the temperature returns to a safe range, full functionality is gradually restored.

[0080] Furthermore, in order to address the issue of concentrated heat generation caused by high integration and multi-path concurrent operation, we continue to... Figure 3 As shown, in this embodiment, the heat dissipation module 5 includes: a temperature monitoring unit 51 and an adjustment control unit 52; The multi-protocol processing module 3 is connected to the temperature monitoring unit 51 and the adjustment control unit 52 respectively, and the temperature monitoring unit 51 is also connected to the adjustment control unit 52; The temperature monitoring unit 51 is used to transmit a cooling signal to the adjustment and control unit 52 when the temperature of the multi-protocol processing module 3 exceeds a preset threshold. The adjustment and control unit 52 is used to cool down the multi-protocol processing module 3 according to the cooling signal.

[0081] It should be noted that the temperature monitoring unit 51 described above can be any sensor or sensing circuit that has the function of converting the physical quantity of temperature into an electrical signal that can be recognized by the system. For example, a thermistor.

[0082] The aforementioned adjustment and control unit 52 can be any unit capable of receiving signals from the aforementioned temperature monitoring unit 51 and generating control commands for adjusting the operating state of the radio frequency path according to preset logic. For example, a baseband processing chip (BB SOC) or a transceiver can be used to issue commands to reduce the duty cycle or shut down the path.

[0083] In its implementation, the temperature monitoring unit 51 continuously converts the acquired analog temperature signals into digital signals. When the adjustment control unit 52 determines that the digital temperature value of a certain area (e.g., the FEM area responsible for 5G MIMO) exceeds a preset first threshold, it determines that it has received a valid cooling signal. Subsequently, the adjustment control unit 52 immediately activates the corresponding cooling strategy: it sends a command to the RF transceiver in the associated multi-protocol processing module 3 via a control bus (such as SPI or dedicated GPIO), requesting it to reduce the transmit duty cycle of the RF path corresponding to the high-temperature area from 100% to 60%. This command directly reduces the workload of the heat source (the power amplifier in the FEM), suppressing temperature rise at the source.

[0084] To achieve the above objectives, this application also proposes a signal transceiver device, which includes the vehicle-mounted multimode radio frequency system described above.

[0085] It should be noted that the specific implementation of the signal transceiver device provided in this embodiment can refer to the above embodiments, and this embodiment will not elaborate on it further. Therefore, the effects achieved by the signal transceiver device in this embodiment can also refer to the above embodiments, and this embodiment will not elaborate on it further.

[0086] To achieve the above objectives, this application also proposes a vehicle that includes the vehicle-mounted multimode radio frequency system as described above.

[0087] It should be noted that the specific implementation of the signal transceiver device provided in this embodiment can refer to the above embodiments, and this embodiment will not elaborate on it further. Therefore, the effects achieved by the vehicle in this embodiment can also refer to the above embodiments, and this embodiment will not elaborate on them further.

[0088] The above are only some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A vehicle-mounted multi-mode radio frequency system, characterized by, The system comprises an antenna module, a frequency band management module, a multi-protocol processing module and a control module; The antenna module is configured to receive a plurality of wireless signals transmitted by an external device and transmit the signals to the frequency band management module; The frequency band management module is connected between the antenna module and the multi-protocol processing module and configured to simultaneously perform frequency band separation and routing on the plurality of wireless signals and output a plurality of frequency division routing signals to the multi-protocol processing module; The multi-protocol processing module is connected to the control module and configured to process the plurality of frequency division routing signals and transmit the processed frequency division routing signals to the control module; The control module is configured to perform corresponding operations according to the processed frequency division routing signals.

2. The vehicular multi-mode radio frequency system of claim 1, wherein, The wireless signals comprise non-wireless local area network radio frequency signals and wireless local area network radio frequency signals, and the antenna module comprises a composite antenna and at least two wireless local area network antennas; The radio frequency management module is connected to the composite antenna and the at least two wireless local area network antennas respectively; The composite antenna is configured to receive at least two different non-wireless local area network radio frequency signals and transmit the signals to the frequency band management module; The wireless local area network antenna is configured to receive wireless local area network radio frequency signals and transmit the signals to the frequency band management module.

3. The vehicular multi-mode radio frequency system of claim 2, wherein, The frequency division routing signals comprise separation signals and gating signals, and the frequency band management module comprises a signal separation unit and a signal gating unit; The signal separation unit is connected between the composite antenna and the multi-protocol processing module and configured to separate the non-wireless local area network radio frequency signals and transmit the generated separation signals to the multi-protocol processing module; The signal gating unit is connected between the wireless local area network antenna and the multi-protocol processing module and configured to select a path for the wireless local area network radio frequency signals and transmit the generated gating signals to the multi-protocol processing module.

4. The vehicular multi-mode radio frequency system of claim 3, wherein, The frequency division routing signals comprise first baseband signals and second baseband signals, and the multi-protocol processing module comprises a wireless local area network processing unit and an Internet of Things protocol processing unit; The Internet of Things protocol processing unit is connected to the signal separation unit and the control module respectively and configured to process the separation signals and transmit the processed first baseband signals to the control module; The wireless local area network processing unit is connected to the signal gating unit and the control module respectively and configured to process the gating signals and transmit the processed second baseband signals to the control module.

5. The vehicular multi-mode radio frequency system of claim 4, wherein, The wireless local area network processing unit comprises at least two parallel radio frequency processing links; The radio frequency processing link comprises a frequency band selector, a filter and a front-end amplifier; The frequency band selector is connected to the signal gating unit and configured to receive the gating signals; The filter is connected to the frequency band selector and the front-end amplifier respectively and configured to filter the gating signals; The front end amplifier is connected with the control module, and is used for amplifying the filtered selected signal and transmitting the second baseband signal obtained after amplification to the control module.

6. The vehicular multi-mode radio frequency system of claim 4, wherein, The separated signals include ultra-wideband radio frequency signals and long-distance radio frequency signals, the first baseband signals include ultra-wideband baseband signals and long-distance radio baseband signals, and the Internet of Things protocol processing unit includes an ultra-wideband protocol processing subunit and a long-distance radio protocol processing subunit. The frequency band management module and the control module are connected with the ultra-wideband protocol processing subunit and the long-distance radio protocol processing subunit respectively. The ultra-wideband protocol processing subunit is used for processing the ultra-wideband radio frequency signals and transmitting the ultra-wideband baseband signals obtained after processing to the control module. The long-distance radio protocol processing subunit is used for processing the long-distance radio frequency signals and transmitting the long-distance radio baseband signals obtained after processing to the control module.

7. The vehicular multi-mode radio frequency system of claim 1, wherein, The system further includes a heat dissipation module. The heat dissipation module is connected with the multi-protocol processing module, and is used for cooling the multi-protocol processing module when the temperature of the multi-protocol processing module exceeds a preset threshold.

8. The vehicular multi-mode radio frequency system of claim 7, wherein, The heat dissipation module includes a temperature monitoring unit and an adjustment control unit. The multi-protocol processing module is connected with the temperature monitoring unit and the adjustment control unit respectively, and the temperature monitoring unit is further connected with the adjustment control unit. The temperature monitoring unit is used for transmitting a cooling signal to the adjustment control unit when the temperature of the multi-protocol processing module exceeds a preset threshold. The adjustment control unit is used for cooling the multi-protocol processing module according to the cooling signal.

9. A signal transceiving device, characterized by The signal transceiver device includes the vehicle-mounted multi-mode radio frequency system according to any one of claims 1 to 8.

10. A vehicle characterized by comprising: The vehicle includes the vehicle-mounted multi-mode radio frequency system according to any one of claims 1 to 8.

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