Client front-end device and method of controlling the same

Abstract

The present disclosure provides a client front-end device and a control method thereof. Specifically, the client front-end device sets a coupler between a first low-noise amplifier, a second low-noise amplifier of a radio frequency receiving link, and a detection link, and sets a processor at an end of the detection link away from the coupler. The processor can select a frequency band according to a radio frequency signal in the radio frequency receiving link, control an operating state of an antenna, improve communication efficiency, and improve user communication experience.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a client front-end device and its control method. Background Technology

[0002] In recent years, the construction of new maritime information infrastructure in my country has been in full swing. With the advent of the 5G era, the marine economy is ushering in new opportunities for large-scale development. Basic telecommunications companies are accelerating 5G coverage in distant waters, extending 5G capabilities to the ocean and integrating it into the construction of a "smart ocean." However, there are still shortcomings in near-shore shipborne communication equipment in related technologies. Summary of the Invention

[0003] In view of this, the purpose of this disclosure is to provide a customer front-end device and a method for controlling the same.

[0004] For the purposes described above, this disclosure provides a client front-end device, including:

[0005] antenna; Transceiver; Radio frequency transmission link; The radio frequency receiving link includes a first low noise amplifier and a second low noise amplifier, and the radio frequency signal first passes through the first low noise amplifier and then through the second low noise amplifier. A first radio frequency switch connects the antenna, the radio frequency transmission link, and the radio frequency reception link; The second radio frequency switch connects the transceiver, the radio frequency transmission link, and the radio frequency reception link; Detection link; Coupler, connecting the detection link, the first low-noise amplifier, and the second low-noise amplifier, and The processor, located at the end of the detection link furthest from the coupler, is configured to control the operating state of the antenna based on the radio frequency signal.

[0006] Based on the same inventive concept, this disclosure also provides a control method for the aforementioned customer front-end device, including: Acquire at least one frequency band signal and its corresponding signal parameters; wherein the frequency band signal is obtained based on the detection link; In response to the unique frequency point of the at least one frequency band signal, multiple antennas are polled to obtain the radio frequency signal and its signal parameters of each antenna; wherein the radio frequency signal is obtained based on the detection link; The target antenna is determined based on the first preset condition and the signal parameters of the multiple radio frequency signals; In response to the at least one frequency band signal including multiple frequency points, a first communication frequency band is determined based on the signal parameters of each frequency band signal, and the antenna corresponding to the first communication frequency band is used as the target antenna.

[0007] As can be seen from the above, the client front-end device and its control method provided in this disclosure improve communication efficiency and enhance the user's communication experience by placing a coupler between a first low-noise amplifier, a second low-noise amplifier and a detection link in the radio frequency receiving link, and placing a processor at the end of the detection link away from the coupler. The processor can select the frequency band and control the working state of the antenna according to the radio frequency signal in the radio frequency receiving link. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 A schematic diagram of a communication system is shown; Figure 2A This diagram shows a partial structural schematic of a customer front-end device provided in an embodiment of the present disclosure; Figure 2B This illustration shows a partial structural diagram of yet another customer front-end device provided in an embodiment of the present disclosure; Figure 2C This illustration shows a partial structural diagram of yet another customer front-end device provided in an embodiment of the present disclosure; Figure 2D This illustration shows a partial structural diagram of yet another customer front-end device provided in an embodiment of the present disclosure; Figure 3 A flowchart illustrating a control method provided in an embodiment of this disclosure is shown. Figure 4 This diagram illustrates a flow chart of yet another control method provided in an embodiment of the present disclosure. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0011] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0012] Figure 1 A schematic diagram of a communication system 100 is shown.

[0013] like Figure 1 As shown, the communication system 100 may include a communication device 102 and a terminal 104.

[0014] Optionally, the communication device 102 may be a base station or a base station system, and may further include a base station antenna 106, which is a connection device between the wireless network radio frequency front end and the terminal 104, and is mainly used to achieve cell coverage of wireless signals.

[0015] For example, the base station antenna 106 can be an information energy converter between the communication device 102 and the terminal 104. It can be used to convert the modulated radio frequency signal into electromagnetic wave energy for transmission, and to receive electromagnetic wave energy and effectively convert it into a radio frequency signal for transmission to the main device. Therefore, the communication device 102 can receive signals sent by the terminal 104 through the base station antenna 106, or send signals to the terminal 104 through the base station antenna 106.

[0016] The base station or base station system in this disclosure can be a base transceiver station (BTS) in a Global System of Mobile Communication (GSM) system or Code Division Multiple Access (CDMA), a Node B (NB) in a Wideband Code Division Multiple Access (WCDMA) system, an Evolutionary Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, a Next Generation Node Base Station (gNB) in a New Radio (NR) system, a radio controller in a Cloud Radio Access Network (CRAN) scenario, or a relay station, access point, vehicle-mounted equipment, wearable device, or network equipment in future networks, etc. This disclosure does not limit these aspects.

[0017] In this embodiment of the disclosure, terminal 104 may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless communication equipment, user agent, or user device. As an example and not a limitation, terminal 104 may be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, or Personal Digital Assistant (PDA). It may be a handheld device with wireless communication capabilities, a computing device, or other processing device connected to a wireless modem. It may also be an in-vehicle device, wearable device, terminal equipment in a 5G network, or a terminal equipment in a future evolved Public Land Mobile Network (PLMN), etc. This embodiment of the disclosure does not limit this.

[0018] As described in the background section, basic telecommunications companies are accelerating 5G coverage in distant waters, extending 5G capabilities to the ocean and integrating it into the construction of "smart oceans." For example, China Mobile primarily uses the 2.6GHz and 4.9GHz frequency bands for its maritime coverage, and shares the 700MHz frequency band with China Broadcasting Network. Furthermore, China Mobile has combined the 700MHz band shared with China Broadcasting Network and the AsiaSat 6D satellite to comprehensively build a multi-frequency, high-medium-low-frequency 5G network in 10 coastal provinces and cities, including Guangdong, Shandong, Fujian, and Zhejiang. This has achieved 5G network coverage in the sea areas with "superior experience along the coast, stable signal near the shore, and reliable communication in the open ocean," meeting the diverse smart ocean business needs of marine aquaculture, marine ranching, offshore wind power, and smart law enforcement. For example, China Unicom has incorporated 5G signal coverage along the coast and in the open sea into its construction plan. By employing 19dB gain Luneburg lens antennas and 3.5G & 2.1G coordination, it has achieved the advantages of wide bandwidth coverage in the near sea (3.5G 200MHz) and high gain coverage in the open sea (2.1G 19dB). Simultaneously, it fully leverages the advantages of strong uplink and downlink reception and interference randomization, effectively addressing the impact and technical limitations of sea surface propagation models and uplink / downlink line-of-sight propagation models. Similarly, China Telecom has made significant progress in marine coverage, particularly by launching an 800MHz-based 5G ultra-long-range coverage base station on the Yantai-Dalian shipping route in the Bohai Bay.

[0019] Even so, due to the characteristics of the marine environment (such as its vast area and complex weather conditions), it is difficult to guarantee the communication quality of Terminal 104 on near-shore vessels. In other words, Figure 1 The communication system shown is not suitable for communication on near-shore vessels.

[0020] In related technologies, near-shore shipborne equipment typically uses satellite communication. However, unless it is a geostationary satellite, ordinary satellites have problems such as high cost, low data rate, and general stability.

[0021] In view of this, this disclosure provides a customer front-end device and its control method. Here, the customer front-end device (CPE) can be located between the terminal 104 and the communication device 102. Specifically, the customer front-end device improves communication efficiency and enhances the user's communication experience by placing a coupler between a first low-noise amplifier, a second low-noise amplifier, and a detection link in the radio frequency receiving link, and by placing a processor at the end of the detection link away from the coupler. This processor can select a frequency band and control the working state of the antenna based on the radio frequency signal in the radio frequency receiving link.

[0022] To make the technical solutions of this disclosure clearer and easier to understand, a client front-end device provided by an embodiment of this disclosure is described below with reference to the accompanying drawings. It should be noted that the client front-end device provided by the embodiments of this disclosure includes, but is not limited to, applications such as... Figure 1 The communication system shown.

[0023] Figure 2A This diagram illustrates a partial structural schematic of a customer front-end device provided in an embodiment of the present disclosure. Figure 2B This diagram illustrates a partial structural schematic of yet another client front-end device provided in an embodiment of this disclosure. For example... Figure 2A and Figure 2B As shown, the customer front-end equipment includes a transceiver 201, an antenna 202, an RF transmit link 203, an RF receive link 204, a detection link 205, a first RF switch 206, and a second RF switch 207. The first RF switch 206 connects to the antenna 202, the RF transmit link 203, and the RF receive link 204; the second RF switch 207 connects to the transceiver 201, the RF transmit link 203, and the RF receive link 204.

[0024] Furthermore, the RF receiving link 204 includes a first low-noise amplifier 20412 and a second low-noise amplifier 2043, and the RF signal first passes through the first low-noise amplifier 20412 and then through the second low-noise amplifier 2043. Here, the first low-noise amplifier 20412 and the second low-noise amplifier 2043 can be low-noise amplifiers (LNAs), which can amplify very weak signals (such as RF and microwave signals) while introducing as little additional noise as possible.

[0025] In some embodiments, the client front-end device further includes a coupler 20413 and a processor ( Figures 2A-2D (Not shown in the image). Here, coupler 20413 is used to connect detection link 205, first low-noise amplifier 20412, and second low-noise amplifier 2043; the processor is located at the end of detection link 205 away from coupler 20413 and is configured to control the operating state of antenna 202 according to the radio frequency signal. Here, the processor can be implemented using a general-purpose CPU (Central Processing Unit), a Field-Programmable Gate Array (FPGA) microprocessor, an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits, etc., and this disclosure does not limit it in this way.

[0026] It should be noted that when antenna 202 is in operation as a communication antenna, detection link 205 can detect the radio frequency (RF) signal in RF receiving link 204 via coupler 20413. When antenna 202 is not in operation, the first RF switch 206 can connect RF receiving link 204, and detection link 205 can also detect the RF signal in RF receiving link 204. Therefore, regardless of the state of antenna 202, detection link 205 can detect the RF signal in RF receiving link 204.

[0027] By setting a coupler 20413 to couple the detection link 205 in the RF receiving link 204, the RF signal in the RF receiving link 204 can be detected. On the one hand, it can capture the actual state of the base station's transmitted signal in space transmission in real time; on the other hand, it can quantify the signal-to-noise ratio of the receiving end.

[0028] By deploying coupler 20413 between the first low-noise amplifier 20412 and the second low-noise amplifier 2043 at the key nodes of the RF receiving link 204, the detection of the RF signal through the detection link 205 will not affect the RF signal received by the transceiver 201, thus achieving transparent monitoring of the RF signal and forming a detection path that is imperceptible to the RF signal. Coupler 20413 directly extracts the RF signal received by antenna 202, reflecting spatial propagation loss; the separation and detection of the RF signal at the front end of the RF receiving link 204 can provide a signal-to-noise ratio benchmark for frequency band selection.

[0029] To reduce hardware costs, separate antennas and transceivers are configured for both Time Division Duplex (TDD) and Frequency Division Duplex (FDD) modes, forming two channels. The TDD mode can cover the following frequency bands: N38, N39, N40, N41, N78, etc. The FDD mode can cover the following frequency bands: B1, B3, B5, B8, N28, etc.

[0030] In some embodiments, such as Figure 2A As shown, antenna 202 is a first omnidirectional antenna, and the second RF switch is a transceiver switch. In some embodiments, such as Figure 2B As shown, antenna 202 is a second omnidirectional antenna, and the second RF switch is a duplexer.

[0031] It should be noted that, as Figure 2A The channel shown is suitable for time-division duplex mode. For example... Figure 2B The channel shown is suitable for frequency division duplex mode. Therefore, the operating frequency band of the first omnidirectional antenna 202 is greater than that of the second omnidirectional antenna 202.

[0032] This technical solution only requires two omnidirectional antennas with different operating frequencies to achieve full-band sensing, and has the advantages of simple structure and low cost.

[0033] In some embodiments, a filter module 20411 is further included between the first low-noise amplifier 20412 and the first radio frequency switch 206, and the filter module 20411 is located between the first low-noise amplifier 20412 and the first radio frequency switch 206.

[0034] Optionally, the filter module 20411 may include a filter module (such as...) Figure 2A and Figure 2B (as shown), a combination of switches and single filters (such as) Figure 2B (as shown) or surface acoustic wave filter (SAWF) (such as...) Figure 2C and Figure 2D (As shown). Here, the time-division duplex mode applies to the filter module.

[0035] By setting a filter module 20411 before the first low-noise amplifier 20412, the requirements of both the RF receiving link 204 and the detection link 205 for filtering the received signal can be met simultaneously, thereby improving the accuracy of the signal.

[0036] In some embodiments, the first RF switch 206 can be a circulator or a single-pole double-throw switch. Compared to a circulator, a single-pole double-throw switch can more effectively suppress reverse signal leakage, prevent reverse signal interference with the input of the first low-noise amplifier 20412, and improve the accuracy of spatial signal strength assessment.

[0037] In some alternative embodiments, the first omnidirectional antenna and the second omnidirectional antenna can be replaced with multiple directional antennas, respectively. For example, multiple antennas 202 correspond to the same transceiver 201. Here, the multiple antennas 202 are directional antennas 202, and the multiple directional antennas 202 are evenly distributed across sectors. Using multiple directional antennas to achieve omnidirectional coverage has the advantages of being simple to implement and easy to master.

[0038] In some embodiments, such as Figure 2C and Figure 2D As shown, the customer front-end device also includes an RF switch module 207, a third RF switch 2042, and a fourth RF switch 208.

[0039] Furthermore, the RF switch module 207 is disposed between the RF transmission link 203 and the multiple first RF switches 206 corresponding to the multiple antennas 202. Here, the RF switch module 207 can realize the switching of multiple antennas 202, so that multiple antennas can share the RF transmission link 203.

[0040] The radio frequency receiving link 204 includes multiple branch links 2041; each branch link 2041 corresponds to a multiple antenna 202; each branch link 2041 corresponds to a multiple coupler 20413; a third radio frequency switch 2042 is provided between the multiple couplers 20413 and the second low noise amplifier 2043; and a fourth radio frequency switch 208 is provided between the multiple couplers 20413 and the detection link.

[0041] It should be noted that the RF switch module 207 corresponds to multiple antennas 202, and the third RF switch 2042 corresponds to multiple branch links 2041. For image clarity, Figure 2C and Figure 2D Only one antenna 202 and one branch link 2041 are shown.

[0042] By using the RF switch module 207, the third RF switch 2042 and the fourth RF switch 208, the switching of multiple antennas 202 can be realized, which helps to realize the polling detection of multiple antennas 202.

[0043] In some embodiments, such as Figure 2C As shown, the RF switch module 207 is a single-pole multiple-throw switch.

[0044] The inventors of this disclosure have noted that in high-frequency scenarios, the isolation of a single-pole multiple-throw switch (e.g., SP6T) may be less than 40 dB, which cannot meet the stringent requirements of TDD systems for transmit / receive isolation (typically >45 dB). Furthermore, the power tolerance range of a single-pole multiple-throw switch (e.g., <1W) is insufficient, potentially leading to nonlinear distortion or permanent damage at high power levels.

[0045] Based on this, in some alternative embodiments, such as Figure 2D As shown, the RF switch module 207 includes a first-stage RF switch 2071 and a second-stage RF switch 2072; wherein, the first-stage RF switch 2071 is connected to the RF transmission link 203 and multiple second-stage RF switches 2072; the second-stage RF switches 2072 are connected to the first-stage RF switches 2072 and the first RF switches 206 corresponding to some antennas 202.

[0046] By using a first-stage RF switch and a second-stage RF switch, isolation can be increased and power tolerance can be improved.

[0047] In some embodiments, the third RF switch 2042 and the fourth RF switch 208 are both single-pole multiple-throw switches.

[0048] For example, if there are 6 antennas 202, then the first-stage RF switch 2071 can be a single-pole double-throw switch (SP2T), and there can be 2 second-stage RF switches 2072, both of which are single-pole triple-throw switches (SP3T). The third RF switch 2042 and the fourth RF switch 208 are both single-pole six-throw switches (SP6T).

[0049] In some embodiments, the detection link 205 includes a third low-noise amplifier 2052 and a fixed attenuator 2051; wherein the radio frequency signal first passes through the third low-noise amplifier 2052 and then through the fixed attenuator 2051; the third low-noise amplifier 2052 and the second low-noise amplifier 2043 are of the same type.

[0050] By setting a third low-noise amplifier 2052 to correspond to the second low-noise amplifier 2043, the processing of radio frequency signals in the radio frequency receiving link 204 is simulated in the detection link 205, so that the radio frequency signals received by the detection link 205 and the radio frequency signals received by the radio frequency receiving link 204 are basically the same, which helps to ensure detection accuracy.

[0051] In some embodiments, the detection link 205 further includes a Subscriber Identity Module (SIM) (not shown in the figure); wherein the Subscriber Identity Module is located between the fixed attenuator 2051 and the processor.

[0052] By using a user identification module, the process of user communication can be simulated, which helps to improve the accuracy of the detected signal.

[0053] In some embodiments, such as Figures 2A-2D As shown, the RF transmission link 203 is configured with a final stage amplifier 2031 and a bandpass filter 2032 in sequence according to the direction of RF signal transmission. It should be noted that when the antenna 202 is an omnidirectional antenna, the bandpass filter 2032 can be omitted, and this disclosure does not limit this.

[0054] In some embodiments, such as Figures 2C-2D As shown, the first low-noise amplifier 20412 can be a low-noise amplifier with bypass function.

[0055] Therefore, the aforementioned customer front-end equipment can be used to detect multiple signal standards (such as 4G and 5G) and multiple communication frequency bands (such as N1, N5, N38, N39, N40, N41, N77, N78, B1, B3, B5, B8, N28, etc.) of multiple basic telecommunications enterprises, thereby enabling the detection of signal-to-dryness ratio and enhancing communication stability in complex electromagnetic environments.

[0056] Next, the control method based on the aforementioned customer front-end device will be described in detail. It should be noted that the control method can be executed by a processor, and this disclosure does not limit it.

[0057] See Figure 3 The flowchart shown illustrates a control method, which includes: S302: Obtain at least one frequency band signal and its corresponding signal parameters; wherein the frequency band signal is obtained based on the detection link 205.

[0058] It should be noted that signal parameters can be obtained by analyzing the frequency band signal. Here, the analysis can be spectrum analysis and time-domain / modulation analysis, etc., and this disclosure does not limit it.

[0059] Optionally, such as Figure 4 Step 401: The signal parameters of the frequency band signal can be obtained by using commands (e.g., AT+QENG="servingcell").

[0060] In some embodiments, signal parameters include at least one of the following: Received Signal Strength Indicator (RSSI), bandwidth, frequency, signal-to-interference-plus-noise ratio (SINR), and signal standard.

[0061] It should be noted that the time range for acquiring at least one frequency band signal satisfies the polling of multiple antennas. In other words, the at least one frequency band signal in step S302 comes from the radio frequency signal in the radio frequency receiving link of each antenna. The specific time range can be determined based on the detection time of a single antenna and the number of antennas, and this disclosure does not limit it in this regard.

[0062] S3042: Reference Figure 4 In step 4021, in response to the unique frequency point of at least one frequency band signal, multiple antennas are polled to obtain the radio frequency signal and its signal parameters of each antenna; wherein, the radio frequency signal is obtained based on the detection link.

[0063] S306: Determine the target antenna based on the first preset condition and the signal parameters of the multiple radio frequency signals. Here, when the frequency point is unique, it indicates that the source of the radio frequency signal is unique. At this time, by acquiring the radio frequency signals and their signal parameters of multiple antennas, the first preset condition can be used to filter the multiple antennas so as to select the antenna with the best communication performance as the target antenna.

[0064] For example, S306 may include: in response to any radio frequency signal having a signal-to-interference-plus-noise ratio (SIR) within a first preset range and the strongest signal strength, then the antenna corresponding to that radio frequency signal is designated as the target antenna. Here, the SIR meeting the first preset range may be a condition for network access. S3044: Reference Figure 4 In step 4022, in response to at least one frequency band signal including multiple frequency points, a first communication frequency band is determined based on the signal parameters of each frequency band signal, and the antenna corresponding to the first communication frequency band is designated as the target antenna. It should be noted that when the target antenna is connected, it can be used for communication.

[0065] This technical solution obtains frequency band signals, radio frequency signals, and their parameters through the detection link, and uses these parameters to determine the target antenna. This shifts frequency band selection from experience-driven to data-driven, resulting in higher accuracy. Furthermore, using different methods to determine the target antenna based on the number of signal frequency points helps improve the precision of control.

[0066] In some embodiments, S3044 may include: Signals from multiple frequency bands are filtered according to the signal standard; the signal standard includes a first network and a second network; here, the first network can be a 5G network; and the second network can be a 4G network. refer to Figure 4 In step 403, in response to the existence of a frequency band signal corresponding to the first network and the signal-to-interference-plus-noise ratio satisfying the first preset range, a first communication frequency band is determined from the frequency band signal corresponding to the first network. Otherwise, the first communication frequency band is determined from the frequency band signal corresponding to the second network.

[0067] Here, the first preset range can be set based on experience, test results, etc., and this disclosure does not limit it.

[0068] Therefore, selecting frequency bands based on the signal-to-interference-plus-noise ratio (SINR) helps improve the anti-interference capability of communication systems. Furthermore, prioritizing the frequency band signal corresponding to the first network can improve propagation efficiency while ensuring communication quality.

[0069] Further, determining the first communication frequency band from the frequency band signal corresponding to the first network specifically includes: Compare the signal strength and bandwidth of signals across multiple frequency bands; refer to Figure 4 In step 4042, in response to the existence of at least one broadband signal with a signal strength greater than at least one narrowband signal, the frequency band corresponding to the broadband signal with the strongest signal strength is selected as the first communication frequency band; in other words, as long as there is a broadband signal with a signal strength greater than the narrowband signal, selecting the broadband signal as the first communication frequency band helps to ensure the communication rate.

[0070] refer to Figure 4 In step 4041, in response to the fact that the signal strength of all broadband signals is less than the signal strength of the narrowband signals and the difference between the strongest broadband signal and the strongest narrowband signal does not exceed a second preset value, the frequency band corresponding to the strongest broadband signal is taken as the first communication frequency band; for example, the second preset value can be flexibly set, and this disclosure does not limit it, for example, 10dB.

[0071] refer to Figure 4 In step 4043, in response to the fact that the signal strength of all broadband signals is less than the signal strength of the narrowband signals and the difference between the strongest broadband signal and the strongest narrowband signal exceeds a second preset value, the frequency band corresponding to the strongest narrowband signal is taken as the first communication frequency band.

[0072] It should be noted that determining the first communication frequency band from the frequency band signal corresponding to the second network can refer to the aforementioned determination of the first communication frequency band from the frequency band signal corresponding to the first network, and will not be repeated here.

[0073] This technical solution, by comprehensively selecting the first communication frequency band based on signal strength and bandwidth, can maximize the satisfaction of users' communication speed requirements. When the signal strength of broadband signals is insufficient to meet the requirements, although the speed of narrowband signals is reduced, it can still meet the needs of simple communication.

[0074] In some embodiments, the control method further includes: Based on the second preset conditions and frequency bands, multiple frequency band signals are filtered to obtain at least one candidate signal; here, the second preset conditions are obtained based on the geographical location of the customer's front-end device.

[0075] For example, the customer's front-end equipment is located at sea, and commonly used frequency bands at sea may include B8 (700MHz), N41 (2.6GHz), and N78 (4.9GHz). Therefore, the second preset condition can be a commonly used frequency band at sea.

[0076] A first communication frequency band is determined based on at least one candidate signal and its signal parameters. It should be noted that the method for determining the first communication frequency band based on the candidate signal and its signal parameters can refer to the steps for determining the first communication frequency band from the frequency band signal corresponding to the first network, and will not be repeated here.

[0077] By utilizing the second preset condition, the priority of commonly used frequency bands that match geographical location can be increased, making it easier to determine the first communication frequency band more efficiently.

[0078] In some embodiments, the control method further includes: Based on the signal parameters of each frequency band signal, the second communication frequency band is determined; wherein, the communication priority of the second communication frequency band is lower than that of the first communication frequency band; here, the specific steps for determining the second communication frequency band can be selected from the remaining frequency band signals after eliminating the first communication frequency band, and the specific method can refer to the method of the first communication frequency band, which will not be repeated here; Monitor the signal strength of the current communication frequency band; where the current communication frequency band is the first communication frequency band. In response to the signal strength of the current communication frequency band being less than a preset strength threshold, the current communication frequency band is replaced with a second communication frequency band. Here, the preset strength threshold can be set flexibly, and this disclosure does not limit it.

[0079] This technical solution, by setting a preset strength threshold, can not only prevent arbitrary switching of base stations and improve communication stability, but also quickly switch to the second communication band when the signal strength of the first communication band affects the communication effect, ensuring that users can communicate stably.

[0080] Optionally, in response to the signal strength of the current communication frequency band being less than a preset strength threshold, multiple antennas can be polled to reacquire at least one frequency band signal and its corresponding signal parameters.

[0081] It should be understood that polling multiple antennas to reacquire at least one frequency band signal and its corresponding signal parameters can also satisfy the requirement of repeating the process after a preset time interval. This approach helps to discover better communication frequency bands and improve user experience.

[0082] In some embodiments, the control method further includes: Obtain the geographical location and historical signal map of the customer's front-end device; wherein, the historical signal map includes at least one geographical location identifier and the corresponding communication frequency band; In response to a successful match between a geographic location and any geographic location identifier, the antenna corresponding to the communication frequency band of the geographic location identifier is used as the target antenna.

[0083] This method allows for the rapid identification of target antennas based on geographical location and historical signal maps, thereby improving control efficiency.

[0084] In summary, the control method provided in this disclosure, which selects a target antenna from multiple antennas based on frequency band signals and signal parameters, helps to ensure the stability and reliability of ship communication.

[0085] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0086] Based on the same inventive concept, corresponding to the customer front-end device of any of the above embodiments, this disclosure also provides a customer front-end device.

[0087] refer to Figures 2A-2D The customer front-end device specifically includes: Antenna 202; Transceiver 201; RF transmit link 203; The radio frequency receiving link 204 includes a first low noise amplifier 20412 and a second low noise amplifier 2043, and the radio frequency signal first passes through the first low noise amplifier 20412 and then through the second low noise amplifier 2043. The first radio frequency switch 206 connects the antenna 202, the radio frequency transmission link 203 and the radio frequency reception link 204; The second radio frequency switch 207 connects the transceiver 201, the radio frequency transmission link 203 and the radio frequency reception link 204; Detection link 205; Coupler 20413 connects detection link 205, first low-noise amplifier 20412, and second low-noise amplifier 2043, and The processor, located at the end of the detection link 205 away from the coupler 20413, is configured to control the operating state of the antenna 202 according to the radio frequency signal.

[0088] In some embodiments, such as Figure 2A As shown, antenna 202 is the first omnidirectional antenna, and the second RF switch 207 is the transceiver switch.

[0089] In some embodiments, such as Figure 2B As shown, antenna 202 is a second omnidirectional antenna, and second RF switch 207 is a duplexer.

[0090] The operating frequency band of the first omnidirectional antenna is greater than that of the second omnidirectional antenna.

[0091] In some embodiments, the radio frequency receiving link 204 further includes a filter module 20411, which is located between the first low noise amplifier 20412 and the first radio frequency switch 206.

[0092] In some embodiments, such as Figure 2C and Figure 2D As shown, the same transceiver 201 corresponds to multiple antennas 202; the customer front-end equipment also includes an RF switch module 207, a third RF switch 2042, and a fourth RF switch 208; among which, The radio frequency switch module 207 is disposed between the radio frequency transmission link 203 and the multiple first radio frequency switches 206 corresponding to the multiple antennas 202; The radio frequency receiving link 204 includes multiple branch links 2041; each of the multiple branch links 2041 corresponds to a multiple antenna 202. Multiple branch links 2041 correspond to multiple couplers 20413; a third RF switch 2042 is provided between the multiple couplers 20413 and the second low-noise amplifier 2043. A fourth RF switch 208 is provided between multiple couplers 20413 and the detection link 205.

[0093] In some embodiments, such as Figure 2C As shown, the RF switch module 207 is a single-pole multiple-throw switch.

[0094] In some embodiments, such as Figure 2D As shown, the RF switch module 207 includes a first-stage RF switch 2071 and a second-stage RF switch 2072; wherein, the first-stage RF switch 2071 is connected to the RF transmission link 203 and multiple second-stage RF switches 2072; the second-stage RF switches 2072 are connected to the first-stage RF switch 2071 and the first RF switch 206 corresponding to a portion of the antennas 202.

[0095] In some embodiments, the first radio frequency switch 206 is a single-pole double-throw switch; and / or Both the third RF switch 2042 and the fourth RF switch 208 are single-pole multi-throw switches.

[0096] In some embodiments, the multiple antennas 202 corresponding to the same transceiver 201 are directional antennas and the multiple directional antennas are evenly distributed in sectors.

[0097] In some embodiments, the detection link 205 includes a third low-noise amplifier 2052 and a fixed attenuator 2051; wherein... The radio frequency signal first passes through the third low noise amplifier 2052 and then through the fixed attenuator 2051; the third low noise amplifier 2052 and the second low noise amplifier 2043 are of the same type.

[0098] In some embodiments, the detection link 205 further includes a user identification module; wherein, The user identification module is located between the fixed attenuator and the processor.

[0099] The client front-end device of the above embodiments has the beneficial effects of any of the aforementioned client front-end device embodiments, which will not be repeated here.

[0100] Based on the same inventive concept, corresponding to the customer front-end device of any of the above embodiments, this disclosure also provides a control method. For example... Figure 3 As shown, the control method includes: S302: Acquire at least one frequency band signal and its corresponding signal parameters; wherein, the frequency band signal is obtained based on the detection link 205; S3042: In response to the unique frequency point of at least one frequency band signal, poll multiple antennas to obtain the radio frequency signal and its signal parameters of each antenna; wherein, the radio frequency signal is obtained based on the detection link 205; S306: Determine the target antenna based on the first preset condition and the signal parameters of multiple radio frequency signals; S3044: In response to at least one frequency band signal including multiple frequency points, determine a first communication frequency band and use the antenna corresponding to the first communication frequency band as the target antenna based on the signal parameters of each frequency band signal.

[0101] In some embodiments, signal parameters include signal-to-interference-plus-noise ratio (SINR) and signal standard; S3044 specifically includes: Signals from multiple frequency bands are filtered according to the signal standard; the signal standard includes a first network and a second network; the first network and the second network are as described above and will not be repeated here. In response to the existence of a frequency band signal corresponding to the first network and the signal-to-interference-plus-noise ratio (SINR) satisfying a first preset range, a first communication frequency band is determined from the frequency band signal corresponding to the first network. Otherwise, the first communication frequency band is determined from the frequency band signal corresponding to the second network.

[0102] In some embodiments, the signal parameters also include signal strength and bandwidth; Determining the first communication frequency band from the frequency band signals corresponding to the first network specifically includes: Compare the signal strength and bandwidth of signals across multiple frequency bands; refer to Figure 4 In step 4042, in response to the existence of at least one broadband signal with a signal strength greater than at least one narrowband signal, the frequency band corresponding to the broadband signal with the strongest signal strength is taken as the first communication frequency band. refer to Figure 4In step 4041, in response to the fact that the signal strength of all broadband signals is less than the signal strength of the narrowband signals and the difference between the strongest broadband signal and the strongest narrowband signal does not exceed the second preset value, the frequency band corresponding to the strongest broadband signal is taken as the first communication frequency band. refer to Figure 4 In step 4043, in response to the fact that the signal strength of all broadband signals is less than the signal strength of the narrowband signals and the difference between the strongest broadband signal and the strongest narrowband signal exceeds a second preset value, the frequency band corresponding to the strongest narrowband signal is taken as the first communication frequency band.

[0103] In some embodiments, it also includes: Based on the second preset conditions and frequency bands, at least one candidate signal is obtained by filtering multiple frequency band signals. A first communication frequency band is determined based on at least one candidate signal and its signal parameters; wherein... The second preset condition is obtained based on the geographical location of the customer's front-end device.

[0104] In some embodiments, it also includes: The second communication frequency band is determined based on the signal parameters of each frequency band; wherein the communication priority of the second communication frequency band is lower than that of the first communication frequency band. Monitor the signal strength of the current communication frequency band; where the current communication frequency band is the first communication frequency band. In response to the signal strength of the current communication frequency band being less than a preset strength threshold, the current communication frequency band is replaced with the second communication frequency band.

[0105] In some embodiments, it also includes: Obtain the geographical location and historical signal map of the customer's front-end device; wherein, the historical signal map includes at least one geographical location identifier and the corresponding communication frequency band; In response to a successful match between a geographic location and any geographic location identifier, the antenna corresponding to the communication frequency band of the geographic location identifier is used as the target antenna.

[0106] The control method described above has the beneficial effects of any of the aforementioned control method embodiments for customer front-end devices, and will not be repeated here.

[0107] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this disclosure as described above, which are not provided in detail for the sake of brevity.

[0108] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this disclosure, the provided drawings may or may not show well-known power / ground connections to integrated circuit (IC) chips and other components. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this disclosure, and this also takes into account the fact that the details of implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this disclosure will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this disclosure, it will be apparent to those skilled in the art that the embodiments of this disclosure can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0109] Although this disclosure has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0110] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A client front end device, characterized by include: antenna; Transceiver; Radio frequency transmission link; The radio frequency receiving link includes a first low noise amplifier and a second low noise amplifier, and the radio frequency signal first passes through the first low noise amplifier and then through the second low noise amplifier. A first radio frequency switch connects the antenna, the radio frequency transmission link, and the radio frequency reception link; The second radio frequency switch connects the transceiver, the radio frequency transmission link, and the radio frequency reception link; Detection link; Coupler, connecting the detection link, the first low-noise amplifier, and the second low-noise amplifier, and The processor, located at the end of the detection link furthest from the coupler, is configured to control the operating state of the antenna based on the radio frequency signal.

2. The customer front-end device according to claim 1, characterized in that, The antenna is a first omnidirectional antenna, and the second radio frequency switch is a transceiver switch; and / or The antenna is a second omnidirectional antenna, and the second radio frequency switch is a duplexer; The operating frequency band of the first omnidirectional antenna is greater than that of the second omnidirectional antenna.

3. The client front-end device of claim 1, wherein, The radio frequency receiving link also includes a filter module, which is located between the first low-noise amplifier and the first radio frequency switch.

4. The client front-end device of claim 1, wherein, The same transceiver corresponds to multiple antennas; the customer front-end equipment further includes an RF switch module, a third RF switch, and a fourth RF switch; wherein... The radio frequency switch module is disposed between the radio frequency transmission link and the multiple first radio frequency switches corresponding to the multiple antennas; The radio frequency receiving link includes multiple branch links; each of the multiple branch links corresponds one-to-one with one of the multiple antennas. The multiple branch links correspond to multiple couplers; the third RF switch is disposed between the multiple couplers and the second low-noise amplifier; The fourth radio frequency switch is provided between the plurality of couplers and the detection link.

5. The client front-end device of claim 4, wherein, The radio frequency switch module is a single-pole multi-throw switch; or The radio frequency switch module includes a first-level radio frequency switch and a second-level radio frequency switch; wherein, the first-level radio frequency switch is connected to the radio frequency transmission link and a plurality of second-level radio frequency switches; the second-level radio frequency switch is connected to the first-level radio frequency switch and a portion of the first radio frequency switches corresponding to the antenna.

6. The client front-end device of claim 4, wherein, The first radio frequency switch is a single-pole double-throw switch; and / or Both the third and fourth radio frequency switches are single-pole multi-throw switches.

7. The client front-end device of claim 4, wherein, The multiple antennas corresponding to the same transceiver are directional antennas and the multiple directional antennas are evenly distributed in sectors.

8. The client front end device according to any one of claims 1 to 7, characterized by, The detection link includes a third low-noise amplifier and a fixed attenuator; wherein... The radio frequency signal first passes through a third low-noise amplifier and then through the fixed attenuator; the third low-noise amplifier and the second low-noise amplifier are of the same model.

9. The client front-end device of claim 8, wherein, The detection link also includes a user identification module; wherein... The user identification module is located between the fixed attenuator and the processor.

10. A control method of a client front-end device according to any one of claims 1 to 9, characterized by, include: Acquire at least one frequency band signal and its corresponding signal parameters; wherein the frequency band signal is obtained based on the detection link; In response to the unique frequency point of the at least one frequency band signal, multiple antennas are polled to obtain the radio frequency signal and its signal parameters of each antenna; wherein the radio frequency signal is obtained based on the detection link; The target antenna is determined based on the first preset condition and the signal parameters of the multiple radio frequency signals; In response to the at least one frequency band signal including multiple frequency points, a first communication frequency band is determined based on the signal parameters of each frequency band signal, and the antenna corresponding to the first communication frequency band is used as the target antenna.

11. The control method according to claim 10, characterized by, The signal parameters include signal-to-interference-plus-noise ratio and signal standard; The step of determining the first communication frequency band and using the antenna corresponding to the first frequency band as the target antenna based on the signal parameters of each frequency band signal specifically includes: The signals of multiple frequency bands are filtered according to the signal standard; wherein the signal standard includes a first network and a second network; In response to the existence of a frequency band signal corresponding to the first network and the signal-to-interference-plus-noise ratio satisfying a first preset range, a first communication frequency band is determined from the frequency band signal corresponding to the first network; Otherwise, the first communication frequency band is determined from the frequency band signal corresponding to the second network.

12. The control method according to claim 11, characterized by, The signal parameters also include signal strength and bandwidth; The step of determining the first communication frequency band in the frequency band signal corresponding to the first network specifically includes: Compare the signal strength and bandwidth of multiple signals in the aforementioned frequency bands; In response to the existence of at least one wideband signal with a signal strength greater than at least one narrowband signal, the frequency band corresponding to the wideband signal with the strongest signal strength is designated as the first communication frequency band. In response to the fact that the signal strength of all broadband signals is less than the signal strength of the narrowband signals and the difference between the strongest broadband signal and the strongest narrowband signal does not exceed a second preset value, the frequency band corresponding to the strongest broadband signal is taken as the first communication frequency band. In response to the fact that the signal strength of all broadband signals is less than the signal strength of the narrowband signals and the difference between the strongest broadband signal and the strongest narrowband signal exceeds a second preset value, the frequency band corresponding to the strongest narrowband signal is taken as the first communication frequency band.

13. The control method according to claim 11, characterized by, Also includes: Based on the second preset condition and the frequency band, at least one candidate signal is obtained by filtering multiple signals in the frequency band. The first communication frequency band is determined based on the at least one candidate signal and its signal parameters; wherein... The second preset condition is obtained based on the geographical location of the customer's front-end device.

14. The control method according to claim 10, characterized by, Also includes: A second communication frequency band is determined based on the signal parameters of each frequency band signal; wherein the communication priority of the second communication frequency band is lower than that of the first communication frequency band. Monitor the signal strength of the current communication frequency band; wherein, the current communication frequency band is the first communication frequency band; In response to the signal strength of the current communication frequency band being less than a preset strength threshold, the current communication frequency band is replaced with the second communication frequency band.

15. The control method according to claim 10, characterized by, Also includes: Obtain the geographical location and historical signal map of the customer's front-end device; wherein, the historical signal map includes at least one geographical location identifier and the corresponding communication frequency band; In response to a successful match between the geographic location and any of the geographic location identifiers, the antenna corresponding to the communication frequency band corresponding to the geographic location identifier is targeted as a target antenna.

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