Filter bank and control method and apparatus therefor, and electronic device

Abstract

Disclosed are a filter bank and a control method and apparatus therefor, and an electronic device. The filter bank comprises a plurality of filter units, wherein different filter units correspond to different frequency bands. Each filter unit comprises: a filter, which corresponds to a target frequency band, wherein the filter is formed by at least two sub-filters, and the sub-filters are configured to cover the target frequency band in segments; and a switch bank, which is connected to the filter and the sub-filters forming the filter, and is configured to turn on the filter or a combination of the sub-filters.

Description

Filter bank and control method, device and electronic equipment thereof

[0001] Reference of Related Applications

[0002] The present disclosure claims the full right of priority of the Chinese Invention Patent Application No. 202411049614.9, filed on July 31, 2024, and entitled "Filter bank and control method, device and electronic equipment thereof", and incorporates it by reference in its entirety.

[0003] TECHNICAL FIELD

[0004] The present disclosure generally relates to the field of communication technology, and more particularly to a filter bank and a control method, device and electronic equipment thereof.

[0005] BACKGROUND

[0006] In the field of wireless communication, with the continuous progress of technology and the continuous evolution of standards, the scenario of multi-band and multi-standard coexistence becomes more and more common. In particular, Wi-Fi technology has developed from the initial 2.4Ghz frequency band to the current 5Ghz and 6Ghz frequency bands, providing users with faster and more stable network experience. However, the development of these new technologies also brings new problems, i.e., how to ensure communication quality while realizing coexistence between different frequency bands and different standards.

[0007] At present, in the related art, for this problem, the existing Wi-Fi filter scheme generally uses a single SAW (Surface Acoustic Wave) filter to realize filtering and selection of a specific frequency band. However, since the frequency range of Wi-Fi 2.4Ghz band is relatively close to that of cellular B7 / 40 / 41 band, the single SAW filter is not enough to suppress Wi-Fi signals, resulting in serious coexistence problem between Wi-Fi signals and cellular signals. Similarly, the frequency range of 5Ghz Wi-Fi is also very close to that of cellular n79 band, and the frequency range of 5Ghz Wi-Fi is also close to that of 6Ghz Wi-Fi, and the coexistence problem between these frequency bands is increasingly prominent. Although a DR filter (Dielectric Resonator filter) can be used to improve coexistence performance, however, the DR filter has a relatively large size, especially a high height, which increases the difficulty of stacking and heat dissipation design of the overall structure. At the same time, the cost of the DR filter is also relatively high, which is not conducive to the cost control and market competition of the product.

[0008] SUMMARY

[0009] In one aspect, the disclosure provides a filter set, comprising a plurality of filter units, different filter units corresponding to different frequency bands, wherein each filter unit comprises: a filter corresponding to a target frequency band, the filter being composed of at least two sub-filters configured to cover the target frequency band in segments; and a switch group connected with the filter and each sub-filter constituting the filter, configured to turn on the filter or a combination of the sub-filters.

[0010] In some embodiments, the switch group comprises a first single-pole multi-throw switch and a second single-pole multi-throw switch, wherein: the multiple outputs of the first single-pole multi-throw switch are respectively connected with the filter and each sub-filter constituting the filter, the common terminal of the first single-pole multi-throw switch is connected with an antenna, and the first single-pole multi-throw switch is configured to direct an antenna signal to the filter or a combination of the sub-filters for filtering to obtain a filtered signal; the multiple inputs of the second single-pole multi-throw switch are respectively connected with the filter and each sub-filter constituting the filter, the common terminal of the second single-pole multi-throw switch is connected with a radio frequency port of each frequency band of a radio frequency integrated circuit, and the second single-pole multi-throw switch is configured to direct the filtered signal to the radio frequency integrated circuit.

[0011] In some embodiments, the control pin of the switch group is connected with a cellular master control, and the cellular master control is configured to: determine a registered frequency band of a cellular signal; when the frequency band interval between the registered frequency band and the target frequency band is less than or equal to an anti-interference interval threshold, determine a target sub-band in the target frequency band, wherein the target sub-band is a sub-band in the target frequency band having a frequency band interval with the registered frequency band greater than or equal to the anti-interference interval threshold; determine the combination of the sub-filters corresponding to the target sub-band in the filter; and send a control instruction to the switch group through the control pin to control the signal path of the combination of the sub-filters corresponding to the target sub-band.

[0012] In some embodiments, the control pin of the switch group is connected with a control pin of a radio frequency integrated circuit, the radio frequency integrated circuit is in communication connection with a cellular master control, and the cellular master control is configured to: determine a registered frequency band of a cellular signal; when the frequency band interval between the registered frequency band and the target frequency band is less than or equal to an anti-interference interval threshold, determine a target sub-band in the target frequency band, wherein the target sub-band is a sub-band in the target frequency band having a frequency band interval with the registered frequency band greater than the anti-interference interval threshold; determine the combination of the sub-filters corresponding to the target sub-band in the filter; and send a control instruction to the radio frequency integrated circuit to control the signal path of the combination of the sub-filters corresponding to the target sub-band through the radio frequency integrated circuit according to the control instruction.

[0013] In some embodiments, the filter unit is a packaged filter integrated circuit chip.

[0014] In another aspect, the disclosure provides a control method of a filter bank, applied to the filter bank of the disclosure, the method comprising: determining a registration frequency band of a cellular signal; determining a target sub-frequency band in a target frequency band corresponding to any filter in the filter bank when a frequency band interval between the registration frequency band and the target frequency band is less than or equal to an anti-interference interval threshold, wherein the target sub-frequency band is a sub-frequency band in the target frequency band, and a frequency band interval between the registration frequency band and the target sub-frequency band is greater than or equal to the anti-interference interval threshold; determining a combination of sub-filters in the filter corresponding to the target sub-frequency band; and sending a control instruction to the filter bank to control to turn on a signal path of the combination of the sub-filters corresponding to the target sub-frequency band.

[0015] In some embodiments, the control method of the filter bank further comprises: when the frequency band interval between the registration frequency band and the target frequency band is greater than the anti-interference interval threshold, controlling to turn on a complete signal path of the filter.

[0016] In some embodiments, the control method of the filter bank further comprises: when a first antenna signal and a second antenna signal exist simultaneously, determining a first filter receiving the first antenna signal and a second filter receiving the second antenna signal; comparing a first target frequency band of the first filter and a second target frequency band of the second filter; if a frequency band interval between the first target frequency band and the second target frequency band is less than or equal to an anti-interference interval threshold, determining a first target sub-frequency band in the first target frequency band, the transmission rate of which reaches a preset threshold; determining a second target sub-frequency band in the second target frequency band, wherein the second target sub-frequency band is a sub-frequency band in the second target frequency band, and a frequency band interval between the first target sub-frequency band and the second target sub-frequency band is greater than or equal to the anti-interference interval threshold; controlling to turn on a signal path of a combination of sub-filters in the first filter corresponding to the first target sub-frequency band, and controlling to turn on a signal path of a combination of sub-filters in the second filter corresponding to the second target sub-frequency band.

[0017] In still another aspect, the present disclosure provides a control method of a filter bank, comprising: determining a registration frequency band of a cellular signal; determining a target sub-frequency band in a target frequency band corresponding to any filter in the filter bank when a frequency band interval between the registration frequency band and the target frequency band is less than or equal to an anti-interference interval threshold, wherein the target sub-frequency band is a sub-frequency band in the target frequency band, and a frequency band interval between the target sub-frequency band and the registration frequency band is greater than or equal to the anti-interference interval threshold; determining a combination of sub-filters corresponding to the target sub-frequency band in the filter; and sending a control instruction to the filter bank to control to open a signal path of the combination of the sub-filters corresponding to the target sub-frequency band.

[0018] In still another aspect, the present disclosure provides an electronic device, comprising a memory, a processor, a communication interface and a communication bus, the memory stores a computer program executable on the processor, the memory, the processor and the communication interface communicate through the communication bus, and the processor executes the computer program to implement the control method of the filter bank of the present disclosure.

[0019] In still another aspect, the present disclosure provides a computer readable medium having a non-volatile program code executable by a processor, the program code causes the processor to execute the control method of the filter bank of the present disclosure.

[0020] In some embodiments, filter units are provided for different target frequency bands, one filter is arranged in each filter unit, and the filter is divided into a plurality of sub-filters according to sub-frequency bands, and the complete filter of the target frequency band and the sub-filters of the sub-frequency bands are connected to form a filter combination through a switch group, so that the spectral interval between the cellular frequency band can be widened by opening only part of the sub-filters, the coexistence of signals is improved, and the technical problem of how to ensure communication quality while realizing coexistence between different frequency bands and different systems is solved.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure, together with the description.

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required by the embodiments will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor under the premise of these drawings.

[0024] FIG. 1 is a schematic diagram of a filter bank structure according to an embodiment of the present disclosure;

[0025] FIG. 2 is a schematic diagram of a filter bank according to an embodiment of the present disclosure;

[0026] FIG. 3 is a schematic diagram of a switch bank structure according to an embodiment of the present disclosure;

[0027] FIG. 4 is a schematic diagram of filter bank connection according to an embodiment of the present disclosure;

[0028] FIG. 5 is another schematic diagram of filter bank connection according to an embodiment of the present disclosure;

[0029] FIG. 6 is yet another schematic diagram of filter bank connection according to an embodiment of the present disclosure;

[0030] FIG. 7 is a schematic diagram of a control method of a filter bank according to an embodiment of the present disclosure;

[0031] FIG. 8 is a block diagram of a control device of a filter bank according to an embodiment of the present disclosure; and

[0032] FIG. 9 is a schematic diagram of an electronic device according to an embodiment of the present disclosure.

[0033] DETAILED DESCRIPTION

[0034] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0035] In the subsequent description, the suffixes such as "module", "part" or "unit" used to represent elements are only for the convenience of description of the present disclosure, and have no specific meaning in itself. Therefore, "module" and "part" can be used interchangeably.

[0036] In one aspect, the present disclosure provides an embodiment of a filter bank, as shown in FIG. 1, the filter bank comprising a plurality of filter units 1, different frequency bands corresponding to different filter units 1, wherein each filter unit 1 comprises:

[0037] a filter 101 corresponding to a target frequency band, the filter 101 being composed of at least two sub-filters 1011, the sub-filters 1011 being configured to cover the target frequency band in segments;

[0038] The switch group 102 is connected with the filter 101 and each sub-filter 1011 constituting the filter 101, and is configured to open the filter 101 or the combination of the sub-filters 1011.

[0039] The present disclosure provides filter unit coverage for different target frequency bands, each filter unit is provided with a filter, and the filter is divided into multiple sub-filters according to the sub-frequency band, and the complete filter of the target frequency band and the sub-filters of the sub-frequency band are connected to form a filter combination through a switch group, so that the frequency spectrum interval between the cellular frequency band can be widened by opening only part of the sub-filters, and the signal coexistence is improved, and the technical problem of how to ensure communication quality while realizing coexistence between different frequency bands and different systems is solved.

[0040] In some embodiments, the target frequency bands include 2.4G WiFi frequency band, 5G WiFi frequency band, 6G WiFi frequency band, etc., and the corresponding filters are 2.4G WiFi SAW, 5G WiFi SAW, 6G WiFi SAW, etc.

[0041] In some embodiments, each filter described above can be divided into multiple sub-filters according to the frequency band. Taking two sub-filters as an example, as shown in FIG. 2, the two sub-filters can cut the overall filter in half. For example, for 2.4G WiFi SAW, it can be divided into 2.4G_A and 2.4G_B, the passband range of 2.4G_A is 2402-2442MHz, and the passband range of 2.4G_B is 2442-2482MHz. Similarly, 5G WiFi SAW can be divided into 5G_A and 5G_B, the passband range of 5G_A is 5150-5500MHz, and the passband range of 5G_B is 5500-5850MHz. 6G WiFi SAW can be divided into 6G_A and 6G_B, the passband range of 6G_A is 5925-6525MHz, and the passband range of 6G_B is 6525-7125MHz.

[0042] In some embodiments, the combination of the complete filter or the sub-filters is connected to form a filter combination through a switch group, that is, the frequency spectrum interval between the cellular frequency band can be widened by opening only part of the sub-filters, and the signal coexistence is improved. For example, when the cellular is registered to the B40 frequency band (the frequency band range is 2.3GHz to 2.4GHz, i.e. 2300MHz to 2400MHz), the switch of the 2.4G WiFi path is turned to 2.4G_B (2442-2482MHz) which has the strongest suppression to B40, so as to widen the frequency spectrum interval between the cellular frequency band, thereby improving the signal coexistence.

[0043] In some embodiments, as shown in FIG3, the switch group 102 includes a first single-pole multi-throw switch 1021 and a second single-pole multi-throw switch 1022, wherein:

[0044] The multiple output terminals of the first single-pole multi-throw switch 1021 are respectively connected to the filter 101 and each of the sub-filters 1011 that make up the filter 101. The common terminal of the first single-pole multi-throw switch 1021 is connected to the antenna. The first single-pole multi-throw switch 1021 is configured to input the antenna signal into the filter or a combination of the sub-filters for filtering to obtain a filtered signal.

[0045] The multiple input terminals of the second single-pole multi-throw switch 1022 are respectively connected to the filter 101 and each of the sub-filters 1011 constituting the filter 101. The common terminal of the second single-pole multi-throw switch 1022 is connected to the radio frequency port of each frequency band of the radio frequency integrated circuit. The second single-pole multi-throw switch 1022 is configured to introduce the filtered signal into the radio frequency integrated circuit.

[0046] In some implementations, continuing with the example of a filter consisting of two sub-filters, as shown in Figure 3, the first single-pole multi-throw (SPMD) switch and the second SPMD switch can be single-pole triple-throw (SPMD) switches. In this case, the first SPMD switch has one common terminal and three output terminals. These three output terminals can be connected to the complete filter SAW_FULL, the sub-filters SAW_A and SAW_B, respectively, thus cooperating with the second SPMD switch to control the entire target frequency band path corresponding to the complete filter, or the sub-frequency band paths corresponding to SAW_A and SAW_B. In some implementations, the three output terminals can be connected to 2.4G WiFi SAW, 2.4G_A, and 2.4G_B, respectively. Through switch combinations, the entire 2.4G WiFi frequency band path can be controlled, or the sub-frequency band path (2402–2442MHz) corresponding to 2.4G_A or the sub-frequency band path (2442–2482MHz) corresponding to 2.4G_B can be controlled.

[0047] In some implementations, when a filter consists of multiple sub-filters, the sub-filters can be combined to flexibly control the sub-band paths.

[0048] In some implementations, the common terminal of the first single-pole multi-throw switch is connected to the antenna. By switching the output, the antenna signal can be selected to be filtered by different filters or combinations of sub-filters.

[0049] In some implementations, when the second single-pole multi-throw switch is in triple-throw mode, its three input terminals can be connected to the full filter SAW_FULL, sub-filters SAW_A, and SAW_B, respectively. This allows it to work in conjunction with the first single-pole multi-throw switch to control the entire target frequency band path corresponding to the full filter, or the sub-frequency band paths corresponding to SAW_A and SAW_B. In some implementations, the three input terminals can be connected to 2.4G WiFi SAW, 2.4G_A, and 2.4G_B, respectively. Through switch combinations, the entire 2.4G WiFi frequency band path can be controlled, or the sub-frequency band path (2402–2442MHz) corresponding to 2.4G_A or the sub-frequency band path (2442–2482MHz) corresponding to 2.4G_B can be controlled.

[0050] In some implementations, the common terminal of the second single-pole multiple-throw switch is connected to the RF port of each frequency band of the RF integrated circuit. By switching the input terminal, the filtered signal can be selected to be introduced into the corresponding frequency band port of the RF integrated circuit for subsequent processing.

[0051] In some implementations, by connecting the complete filter of the target frequency band and the sub-filters of the sub-frequency band through a switch group to form a filter combination, it is possible to flexibly select the appropriate frequency band path, thereby increasing the spectral spacing between the WiFi band and the cellular band when there is mutual interference between the cellular band and the WiFi band, and improving the coexistence of signals.

[0052] In some implementations, the control pins of the switch group are connected to the cellular master controller, which is configured as follows:

[0053] Step 1: Determine the registered frequency band for the cellular signal;

[0054] Step 2: When the frequency band interval between the registered frequency band and the target frequency band is less than or equal to the anti-interference interval threshold, a target sub-frequency band is determined in the target frequency band, wherein the target sub-frequency band is a sub-frequency band in the target frequency band whose frequency band interval with the registered frequency band is greater than or equal to the anti-interference interval threshold;

[0055] Step 3: Determine the combination of sub-filters in the filter corresponding to the target sub-frequency band;

[0056] Step 4: Send a control command to the switch group through the control pin to control the signal path of the combination of sub-filters corresponding to the target sub-frequency band.

[0057] In some implementations, as shown in Figure 4, the GPIO (General-Purpose Input / Output) control pins of the switch group can be connected to the cellular master controller. The cellular master controller can then control the path selection of each filter in the WiFi filter bank, thereby achieving the optimal coexistence scheme design.

[0058] In some implementations, the control pins of the switch group are directly connected to the cellular master controller. The cellular master controller is responsible for determining the registered frequency band of the current cellular signal and, based on the relationship between the registered frequency band and the target frequency band, selecting the optimal sub-filter combination through a software algorithm. When the frequency band interval between the registered frequency band and the target frequency band is less than or equal to a set anti-interference interval threshold, the cellular master controller will determine the sub-frequency band in the target frequency band that meets the anti-interference requirements and send a command to the switch group through the control pin to open the signal path of the corresponding sub-filter combination, thereby achieving optimal coexistence between cellular signals (such as 2G / 3G / 4G / 5G, etc.) and Wi-Fi signals.

[0059] In some implementations, since the frequency range of the 2.4G WiFi band is relatively close to that of cellular B7 / 40 / 41, and the frequency range of 5G WiFi is relatively close to that of cellular N79, the following controls can be implemented to improve the coexistence performance of 2.4G WiFi with cellular B7 / 40 / 41 and 5G WiFi with cellular N79:

[0060] When a cell registers to the B40 band (ranging from 2.3GHz to 2.4GHz, or 2300MHz to 2400MHz), the 2.4G WiFi path is switched to 2.4G_B (passband range 2442~2482MHz), which has the strongest suppression of B40. This isolates the sub-band corresponding to 2.4G_A (2402~2442MHz). At the same time, the WiFi channel range is locked to Channel 7~Channel 13. WiFi frequency hopping is then performed according to the specific channel registered on the cell to provide the best coexistence performance.

[0061] When a cell registers to the B7 / 41 band (B7 uplink band is 2500-2570MHz, downlink band is 2620-2690MHz, and B41 band ranges from 2496MHz to 2690MHz), the 2.4G WiFi path is switched to 2.4G_A (passband range 2402~2442MHz), which has the strongest suppression of B7 / 41. This isolates the sub-band corresponding to 2.4G_B (2442~2482MHz). At the same time, the WiFi channel range is locked to Channel 1~Channel 6. WiFi frequency hopping is then performed according to the specific channel registered on the cell to provide the best coexistence performance.

[0062] When a cell registers to the N79 band, the 5G WiFi path is switched to 5G_B (passband range 5500-5850MHz), which has the strongest suppression of N79 (band range 4800MHz to 4900MHz). This isolates the sub-band corresponding to 5G_A (5150-5500MHz). At the same time, the WiFi channel range is locked to Channel 100-Channel 165. WiFi frequency hopping is then performed according to the specific channel registered on the cell to provide the best coexistence performance.

[0063] In some implementations, considering scenarios where WiFi 6E / 7 simultaneously supports 5G and 6G WiFi, and given the similar frequency ranges of 5G and 6G WiFi, the traditional approach to improve coexistence performance is to use a DR filter (dielectric filter). However, DR filters are relatively large, especially in height, increasing the complexity of overall system stacking and heat dissipation design. Furthermore, DR filters are relatively expensive, hindering cost control and market competitiveness. Therefore, in some implementations, when 5G and 6G WiFi coexist, if 5G WiFi performs best in the low and mid-channels, it switches to 5G_A. In this case, the 6G band can be selected as 6G_A / Full SAW or 6G_B based on the actual coexistence effect. If 5G WiFi performs best in the mid and high-channels, it switches to 5G_B. In this case, the 6G band switches to 6G_B, which offers the best suppression of 5G WiFi, providing optimal coexistence performance. In some implementations, the spectrum is divided into low-medium and medium-high bands, and a sub-filter with strong suppression of interference frequency bands is designed for each band, so that strong suppression of interference frequency bands is achieved in hardware.

[0064] In some implementations, the appropriate anti-interference interval threshold can be determined through experimental testing, simulation analysis, or statistical methods based on historical data.

[0065] In some implementations, the cellular master controller can directly control the switch group to dynamically adjust the filter path selection in real time according to the network environment and frequency band usage, ensuring that the system can quickly respond to environmental changes and optimize coexistence performance.

[0066] In some implementations, the control pins of the switch group are connected to the control pins of the radio frequency integrated circuit, which is communicatively connected to the cellular master controller, which is configured as follows:

[0067] Step 1: Determine the registered frequency band for the cellular signal;

[0068] Step 2: When the frequency band interval between the registered frequency band and the target frequency band is less than or equal to the anti-interference interval threshold, a target sub-frequency band is determined in the target frequency band, wherein the target sub-frequency band is a sub-frequency band in the target frequency band whose frequency band interval with the registered frequency band is greater than the anti-interference interval threshold;

[0069] Step 3: Determine the combination of sub-filters in the filter corresponding to the target sub-frequency band;

[0070] Step 4: Send a control command to the radio frequency integrated circuit to control the signal path of the combination of sub-filters corresponding to the target sub-frequency band to be turned on according to the control command.

[0071] In some implementations, as shown in Figure 5, the GPIO (General-Purpose Input / Output) control pins of the switch group can be connected to the WiFi RF integrated circuit. The cellular master controller sends commands to the WiFi RF integrated circuit, which then controls the path selection of each filter in the WiFi filter bank, thus achieving the optimal coexistence scheme design.

[0072] In some implementations, the cellular controller sends instructions to the Wi-Fi IC, which then controls the path selection for Wi-Fi SAW. Through the software algorithm of the cellular controller and the precise control of the Wi-Fi IC, an optimal coexistence scheme is designed, ensuring that Wi-Fi signals and cellular signals can share spectrum resources while reducing mutual interference and improving overall communication performance.

[0073] In some implementations, the filtering unit is a packaged filter integrated circuit chip.

[0074] In some implementations, as shown in Figure 6, each filter unit can be packaged into a filter integrated circuit chip through integrated design, which significantly reduces the overall size, making it lighter, easier to carry and deploy. At the same time, the design of a single IC simplifies the system architecture, reduces the connection and wiring requirements between components, thereby reducing the complexity and failure rate of the system.

[0075] In some implementations, filter units are provided to cover different target frequency bands. Each filter unit is equipped with a filter, and the filter is divided into multiple sub-filters according to sub-frequency bands. The complete filter of the target frequency band and the sub-filters of the sub-frequency bands are then connected by a switch group to form a filter combination. This allows the spectral spacing between the target frequency band and the cellular frequency band to be increased by only turning on some sub-filters, thereby improving the coexistence of signals and solving the technical problem of how to achieve coexistence between different frequency bands and different standards while ensuring communication quality.

[0076] On the other hand, this disclosure provides a control method for a filter bank, applied to the filter bank of this disclosure, as shown in Figure 7. The method includes:

[0077] Step S702: Determine the registered frequency band of the cellular signal;

[0078] Step S704: When the frequency band interval between the registered frequency band and the target frequency band corresponding to any filter in the filter group is less than or equal to the anti-interference interval threshold, a target sub-frequency band is determined in the target frequency band, wherein the target sub-frequency band is a sub-frequency band in the target frequency band whose frequency band interval with the registered frequency band is greater than or equal to the anti-interference interval threshold;

[0079] Step S706: Determine the combination of sub-filters in the filter corresponding to the target sub-frequency band; and

[0080] Step S708: Send a control command to the filter bank to control the activation of the signal path of the combination of sub-filters corresponding to the target sub-frequency band.

[0081] Through the above steps S702 to S708, the system determines the registered frequency band of the current cellular signal and selects the optimal sub-filter combination through software algorithm based on the relationship between the registered frequency band and the target frequency band. It can open only some sub-filters to increase the spectral spacing between the cellular frequency band and improve the coexistence of the signal. This solves the technical problem of how to achieve coexistence between different frequency bands and different standards while ensuring communication quality.

[0082] In some implementations, when the frequency band interval between the registered frequency band and the target frequency band is less than or equal to a set anti-interference interval threshold, the cellular master controller will determine the sub-frequency band in the target frequency band that meets the anti-interference requirements, and send a command to the switch group through the control pin to open the signal path of the corresponding sub-filter combination, so as to achieve optimal coexistence between cellular signals (such as 2G / 3G / 4G / 5G, etc.) and Wi-Fi signals.

[0083] In some implementations, since the frequency range of the 2.4G WiFi band is relatively close to that of cellular B7 / 40 / 41, and the frequency range of 5G WiFi is relatively close to that of cellular N79, the following controls can be implemented to improve the coexistence performance of 2.4G WiFi with cellular B7 / 40 / 41 and 5G WiFi with cellular N79:

[0084] When a cell registers to the B40 band (ranging from 2.3GHz to 2.4GHz, or 2300MHz to 2400MHz), the 2.4G WiFi path is switched to 2.4G_B (passband range 2442~2482MHz), which has the strongest suppression of B40. This isolates the sub-band corresponding to 2.4G_A (2402~2442MHz). At the same time, the WiFi channel range is locked to Channel 7~Channel 13. WiFi frequency hopping is then performed according to the specific channel registered on the cell to provide the best coexistence performance.

[0085] When a cell registers to the B7 / 41 band (B7 uplink band is 2500-2570MHz, downlink band is 2620-2690MHz, and B41 band ranges from 2496MHz to 2690MHz), the 2.4G WiFi path is switched to 2.4G_A (passband range 2402~2442MHz), which has the strongest suppression of B7 / 41. This isolates the sub-band corresponding to 2.4G_B (2442~2482MHz). At the same time, the WiFi channel range is locked to Channel 1~Channel 6. WiFi frequency hopping is then performed according to the specific channel registered on the cell to provide the best coexistence performance.

[0086] When a cell registers to the N79 band, the 5G WiFi path is switched to 5G_B (passband range 5500-5850MHz), which has the strongest suppression of N79 (band range 4800MHz to 4900MHz). This isolates the sub-band corresponding to 5G_A (5150-5500MHz). At the same time, the WiFi channel range is locked to Channel 100-Channel 165. WiFi frequency hopping is then performed according to the specific channel registered on the cell to provide the best coexistence performance.

[0087] In some implementations, the appropriate anti-interference interval threshold can be determined through experimental testing, simulation analysis, or statistical methods based on historical data.

[0088] In some implementations, the method further includes: when the frequency band interval between the registered frequency band and the target frequency band is greater than the anti-interference interval threshold, controlling the activation of the complete signal path of the filter.

[0089] In some implementations, when the frequency band registered by the cell does not interfere with 2.4G or 5G WiFi, the paths of 2.4G and 5G WiFi can both be switched to SAW_FULL, that is, using the full 2.4G WiFi SAW and 5G WiFi SAW.

[0090] In some implementations, considering scenarios where WiFi 6E / 7 simultaneously supports 5G and 6G WiFi, and given the similar frequency ranges of 5G and 6G WiFi, the traditional approach to improve coexistence performance is to use a DR filter (dielectric filter). However, DR filters are relatively large, especially in height, increasing the complexity of overall device stacking and heat dissipation design. Furthermore, DR filters are relatively expensive, hindering cost control and market competitiveness. Therefore, in some implementations, the following design approach has been adopted for the coexistence of 5G and 6G WiFi:

[0091] Step 1: When the first antenna signal and the second antenna signal exist simultaneously, determine the first filter for receiving the first antenna signal and the second filter for receiving the second antenna signal;

[0092] Step 2: Compare the first target frequency band of the first filter with the second target frequency band of the second filter;

[0093] Step 3: If the frequency band spacing between the first target frequency band and the second target frequency band is less than or equal to the anti-interference spacing threshold, then a first target sub-frequency band with a transmission rate reaching a preset threshold is determined in the first target frequency band.

[0094] Step 4: Determine a second target sub-frequency band in the second target frequency band, wherein the second target sub-frequency band is a sub-frequency band in the second target frequency band whose frequency band interval with the first target sub-frequency band is greater than or equal to the anti-interference interval threshold;

[0095] Step 5: Control the opening of the signal path of the combination of sub-filters corresponding to the first target sub-frequency band in the first filter, and control the opening of the signal path of the combination of sub-filters corresponding to the second target sub-frequency band in the second filter.

[0096] In some implementations, the first antenna signal can be a 5G WiFi signal, the second antenna signal can be a 6G WiFi signal, and correspondingly, the first filter can be a 5G WiFi SAW, the second filter can be a 6G WiFi SAW, the first target frequency band is the 5G WiFi frequency band, and the second target frequency band is the 6G WiFi frequency band.

[0097] In some implementations, when 5G WiFi and 6G WiFi coexist, if the low and mid-channel performance of 5G WiFi is the best, it switches to 5G_A. In this case, the 6G band can be selected as 6G_A / Full SAW or 6G_B based on the actual coexistence effect. If the mid and high-channel performance of 5G WiFi is the best, it switches to 5G_B. In this case, the 6G band switches to 6G_B, which offers the best suppression of 5G WiFi, providing the best coexistence performance. In some implementations, the spectrum is divided into low-mid and mid-high bands, and each band is designed with a sub-filter that strongly suppresses interference bands, achieving strong hardware suppression of interference bands.

[0098] On another aspect, as shown in Figure 8, this disclosure provides a control device for a filter bank, including:

[0099] The first determining module 801 is configured to determine the registered frequency band of the cellular signal;

[0100] The second determining module 803 is configured to determine a target sub-frequency band in the target frequency band when the frequency band interval between the registered frequency band and the target frequency band corresponding to any filter in the filter group is less than or equal to the anti-interference interval threshold. The target sub-frequency band is a sub-frequency band in the target frequency band whose frequency band interval with the registered frequency band is greater than or equal to the anti-interference interval threshold.

[0101] The third determining module 805 is configured to determine the combination of sub-filters in the filter corresponding to the target sub-frequency band; and

[0102] The first control module 807 is configured to send control commands to the filter bank to control the activation of the signal path of the combination of sub-filters corresponding to the target sub-frequency band.

[0103] It should be noted that the first determining module 801 in this embodiment can be configured to execute step S702 in this embodiment, the second determining module 803 in this embodiment can be configured to execute step S704 in this embodiment, the third determining module 805 in this embodiment can be configured to execute step S706 in this embodiment, and the control module 807 in this embodiment can be configured to execute step S708 in this embodiment.

[0104] It should be noted that the examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the content disclosed in the above embodiments. It should also be noted that the above modules, as part of the device, can be implemented in software or hardware.

[0105] In some implementations, the control device for the filter bank further includes a second control module, specifically configured to: control the activation of the complete signal path of the filter when the frequency band interval between the registered frequency band and the target frequency band is greater than the anti-interference interval threshold.

[0106] In some implementations, the control device for the filter bank further includes a third control module, specifically configured to: when a first antenna signal and a second antenna signal are present simultaneously, determine a first filter for receiving the first antenna signal and a second filter for receiving the second antenna signal; compare a first target frequency band of the first filter with a second target frequency band of the second filter; if the frequency band interval between the first target frequency band and the second target frequency band is less than or equal to an anti-interference interval threshold, determine a first target sub-frequency band in the first target frequency band whose transmission rate reaches a preset threshold; determine a second target sub-frequency band in the second target frequency band, wherein the second target sub-frequency band is a sub-frequency band in the second target frequency band whose frequency band interval with the first target sub-frequency band is greater than or equal to the anti-interference interval threshold; control the opening of the signal path of the combination of sub-filters corresponding to the first target sub-frequency band in the first filter, and control the opening of the signal path of the combination of sub-filters corresponding to the second target sub-frequency band in the second filter.

[0107] On the other hand, this disclosure provides an electronic device, as shown in FIG9, including a memory 901, a processor 903, a communication interface 905, and a communication bus 907. The memory 901 stores a computer program that can run on the processor 903. The memory 901 and the processor 903 communicate through the communication interface 905 and the communication bus 907. When the processor 903 executes the computer program, it implements the filter bank control method described in this disclosure.

[0108] In some embodiments, the electronic device can be a module capable of communication functions or a terminal device containing such a module, wherein the terminal device can be a mobile terminal or a smart terminal. In some embodiments, the mobile terminal can be at least one of a mobile phone, tablet computer, or laptop computer. In some embodiments, the smart terminal can be a smart car, smartwatch, shared bicycle, smart locker, or other terminal containing a wireless communication module. In some embodiments, the module can be a wireless communication module, such as any one of a 2G communication module, 3G communication module, 4G communication module, 5G communication module, or NB-IoT communication module.

[0109] The memory and processor in the aforementioned electronic devices communicate with each other via a communication bus and a communication interface. The communication bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc.

[0110] The memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. In some embodiments, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0111] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0112] In another aspect, this disclosure also provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the filter bank control method described in this disclosure.

[0113] In some embodiments, the computer-readable medium is configured to store program code for the processor to perform the following steps:

[0114] Determine the registration frequency band for cellular signals;

[0115] When the frequency band interval between the registered frequency band and the target frequency band corresponding to any filter in the filter group is less than or equal to the anti-interference interval threshold, a target sub-frequency band is determined in the target frequency band, wherein the target sub-frequency band is a sub-frequency band in the target frequency band whose frequency band interval with the registered frequency band is greater than or equal to the anti-interference interval threshold;

[0116] Determine the combination of sub-filters in the filter corresponding to the target sub-frequency band;

[0117] A control command is sent to the filter bank to control the activation of the signal path of the combination of sub-filters corresponding to the target sub-frequency band.

[0118] In some implementations, the specific examples in this embodiment may refer to the examples described in the above embodiments, and will not be repeated here.

[0119] In specific implementation, the embodiments disclosed herein can be referred to the above embodiments and have corresponding technical effects.

[0120] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or combinations thereof.

[0121] For software implementation, the techniques described herein can be implemented by units that perform the functions described herein. The software code can be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

[0122] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0123] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0124] In the embodiments provided in this disclosure, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0125] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0126] In addition, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0127] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, or the parts that contribute to the prior art, or parts of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks. It should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the absence of further restrictions, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0128] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A filter bank comprising a plurality of filter units, different ones of said filter units corresponding to different frequency bands, wherein, Each of the filter units comprises: a filter corresponding to a target frequency band, the filter being composed of at least two sub-filters, the sub-filters being configured to segmentally cover the target frequency band; and a switch group connected with the filter and each of the sub-filters composing the filter, configured to turn on the filter or a combination of the sub-filters.

2. The filter group of claim 1, wherein the switch group comprises a first single-pole multi-throw switch and a second single-pole multi-throw switch, wherein: a plurality of outputs of the first single-pole multi-throw switch are respectively connected with the filter and each of the sub-filters composing the filter, a common terminal of the first single-pole multi-throw switch is connected with an antenna, the first single-pole multi-throw switch is configured to guide an antenna signal into the filter or a combination of the sub-filters for filtering to obtain a filtered signal; and a plurality of inputs of the second single-pole multi-throw switch are respectively connected with the filter and each of the sub-filters composing the filter, a common terminal of the second single-pole multi-throw switch is connected with a radio frequency port of each frequency band of a radio frequency integrated circuit, the second single-pole multi-throw switch is configured to guide the filtered signal into the radio frequency integrated circuit.

3. The filter group of claim 1 or 2, wherein a control pin of the switch group is connected with a cellular master control, the cellular master control is configured to: determine a registered frequency band of a cellular signal; determining a target sub-frequency band in the target frequency band when a frequency band interval between the registered frequency band and the target frequency band is less than or equal to an anti-interference interval threshold, wherein the target sub-band is a sub-band in the target frequency band, a frequency band interval between the registered frequency band and the target sub-band is greater than or equal to the anti-interference interval threshold value; determine a combination of the sub-filters corresponding to the target sub-band in the filter; send a control instruction to the switch group through the control pin to control to turn on a signal path of the combination of the sub-filters corresponding to the target sub-band.

4. The filter group of any one of claims 1 to 3, wherein a control pin of the switch group is connected with a control pin of a radio frequency integrated circuit, the radio frequency integrated circuit is communicatively connected with a cellular master control, the cellular master control is configured to: determine a registered frequency band of a cellular signal; determining a target sub-band in the target frequency band when a frequency band interval between the registered frequency band and the target frequency band is less than or equal to an anti-interference interval threshold, wherein the target sub-band is a sub-band in the target frequency band, a frequency band interval between the registered frequency band and the target sub-band is greater than the anti-interference interval threshold value; determine a combination of the sub-filters corresponding to the target sub-band in the filter; send a control instruction to the radio frequency integrated circuit to control to turn on a signal path of the combination of the sub-filters corresponding to the target sub-band through the radio frequency integrated circuit according to the control instruction.

5. The filter group of any one of claims 1 to 4, wherein the filter unit is a packaged filter integrated circuit chip.

6. A control method of a filter group, applied to the filter group of any one of claims 1 to 5, wherein the method comprises: determining a registered frequency band of a cellular signal; determining a target sub-band in the target band when a band interval between the registered band and the target band corresponding to any filter in the filter set is less than or equal to an anti-interference interval threshold, wherein the target sub-band is a sub-band in the target band, and a band interval between the registered band and the target sub-band is greater than or equal to the anti-interference interval threshold; determining a combination of sub-filters in the filter corresponding to the target sub-band; and sending a control instruction to the filter set to control to open a signal path of the combination of the sub-filters corresponding to the target sub-band.

7. The method of claim 6, further comprising: controlling to open a complete signal path of the filter when a band interval between the registered band and the target band is greater than the anti-interference interval threshold.

8. The method of claim 6 or 7, further comprising: determining a first filter receiving a first antenna signal and a second filter receiving a second antenna signal when the first antenna signal and the second antenna signal exist simultaneously; comparing a first target band of the first filter and a second target band of the second filter; determining a first target sub-band in the first target band at which a transmission rate reaches a preset threshold if a band interval between the first target band and the second target band is less than or equal to an anti-interference interval threshold; determining a second target sub-band in the second target band, wherein the second target sub-band is a sub-band in the second target band, and a band interval between the first target sub-band and the second target sub-band is greater than or equal to the anti-interference interval threshold; controlling to open a signal path of a combination of sub-filters in the first filter corresponding to the first target sub-band and a signal path of a combination of sub-filters in the second filter corresponding to the second target sub-band.

9. A control device of a filter set, comprising: a first determining module configured to determine a registered band of a cellular signal; a second determining module configured to determine a target sub-band in a target band corresponding to any filter in the filter set when a band interval between the registered band and the target band is less than or equal to an anti-interference interval threshold, wherein the target sub-band is a sub-band in the target band, and a band interval between the registered band and the target sub-band is greater than or equal to the anti-interference interval threshold; a third determining module configured to determine a combination of sub-filters in the filter corresponding to the target sub-band; and a first control module configured to send a control instruction to the filter set to control to open a signal path of the combination of the sub-filters corresponding to the target sub-band.

10. An electronic device comprising a memory, a processor, a communication interface and a communication bus, the memory storing a computer program executable on the processor, the memory, the processor and the communication interface being in communication through the communication bus, wherein the processor implements the control method of the filter set according to any one of claims 6 to 8 when executing the computer program.

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