BCN pilot frequency receiving anti-interference method and system

Abstract

The invention provides a BCN pilot frequency receiving anti-interference method and system. The method comprises the following steps: searching a BCN signal in a frequency point; detecting the BCN signal based on the PN sequence and the BCN time slice interval, and if the matched PN sequence and the correspondingly configured BCN time slices are detected to be the same, entering a BCN synchronization mode; and sampling and processing the BCN signal in the BCN synchronization mode to ensure that the signals of other frequency points cannot interfere with the receiving of the frequency point. According to the BCN pilot frequency receiving anti-interference method and system provided by the invention, channel isolation can be distinguished by combining two different modes according to the BCN characteristics of Turmass, so that the problem of the BCN pilot frequency receiving capability is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of narrowband wireless communications, and more specifically, to a BCN heterodyne reception anti-interference method and system. Background Art

[0002] TurMass devices can receive signals at different frequencies and avoid interference within the channel through frequency hopping technology. At the same time, the application of multi-antenna technology and anti-interference algorithms further improves the reception quality and stability of the signal. This makes TurMass devices more reliable and stable in IoT applications.

[0003] The existing solution will use different PN sequences in software. However, in actual use, the system uses GFSK modulation, which is not effective. There is still a possibility of cross-frequency reception in channels with close spacing. The effect of resisting cross-frequency reception can be exchanged for sacrificing sensitivity. The overall performance will be greatly reduced.

[0004] Therefore, there is an urgent need for a new FSK-based hybrid modulation signal phase transition method and system to solve the above problems. Summary of the invention

[0005] The present invention provides a method for overcoming the above problems or at least partially solving the above problems. The present invention provides a BCN inter-frequency reception anti-interference method and system. In a first aspect, an embodiment of the present invention provides a BCN inter-frequency reception anti-interference method, including:

[0006] Search for BCN signals within a frequency point;

[0007] The BCN signal is detected based on the PN sequence and the BCN time slice interval, and if a matching PN sequence is detected and the corresponding configured BCN time slices are the same, a BCN synchronization mode is entered;

[0008] The BCN signal is sampled and processed in the BCN synchronization mode to ensure that signals at other frequencies cannot interfere with reception at this frequency.

[0009] The detecting of the BCN signal based on the PN sequence and the BCN time slice interval, if a matching PN sequence is detected and the corresponding configured BCN time slices are the same, then entering the BCN synchronization mode specifically includes:

[0010] Adjust the setting value of the BCN time slice interval and the corresponding PN sequence to distinguish different channels.

[0011] Wherein, the method further comprises:

[0012] The signal source is confirmed and the main channel blocks are distinguished according to the received PN sequence.

[0013] The channels are allocated in groups, each group of channels uses the same PN sequence and adopts different BCN time slice intervals, and different groups use different PN sequences to distinguish sub-channels within the channel block.

[0014] Among them, for the Turmass system, 64 channels are used for channel differentiation, and the channel numbers are allocated from 0 to 63, wherein 0 to 15, 16 to 31, 32 to 47 and 48 to 63 each constitute a channel block.

[0015] According to a second aspect of the present invention, the present application provides a BCN inter-frequency reception anti-interference system, comprising:

[0016] Search module, used to search for BCN signals within a frequency point;

[0017] A detection module, configured to detect the BCN signal based on a PN sequence and a BCN time slice interval, and enter a BCN synchronization mode if a matching PN sequence is detected and the corresponding configured BCN time slices are the same;

[0018] The processing module is used to sample and process the BCN signal in the BCN synchronization mode to ensure that signals at other frequencies cannot interfere with the reception of the frequency.

[0019] According to the third aspect provided by the present invention, the present application also provides an electronic device, which includes: a processor; a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in any one of the first aspects is implemented.

[0020] According to a fourth aspect provided by the present invention, the present application further provides a computer-readable storage medium storing computer program instructions, which, when executed by a computer, enables the computer to execute any one of the methods described in the first aspect.

[0021] The present invention provides a BCN inter-frequency reception anti-interference method and system, which can utilize the BCN characteristics of Turmass to adopt a combination of two different methods to distinguish channel isolation, thereby solving the BCN inter-frequency reception capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of a BCN inter-frequency reception anti-interference method provided by an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of a BCN time slice provided by an embodiment of the present invention;

[0024] Figure 3is a schematic diagram of a main channel block provided by an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of channel block division provided by an embodiment of the present invention;

[0026] Figure 5 It is a structural schematic diagram of a BCN inter-frequency reception anti-interference system provided by an embodiment of the present invention;

[0027] Figure 6 A structural schematic diagram of an electronic device is illustrated. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] Figure 1 FIG. 1 is a flow chart of a BCN inter-frequency reception anti-interference method provided by an embodiment of the present invention. Figure 1 As shown, including:

[0030] 101. Search for BCN signals within a frequency point;

[0031] 102. Detect the BCN signal based on the PN sequence and the BCN time slice interval. If a matching PN sequence is detected and the corresponding configured BCN time slices are the same, enter the BCN synchronization mode;

[0032] 103. Sample and process the BCN signal in the BCN synchronization mode to ensure that signals at other frequencies cannot interfere with reception at this frequency.

[0033] It should be noted that since the BCN in Turmass's system is synchronized using time, frequency, and PN, in practice, we use frequency to represent the BCN number, PN to distinguish the isolation of distant channels, and time to distinguish the isolation of adjacent channels.

[0034] The executor of the embodiment of the present invention is a signal receiving end. Specifically, in step 101 of the embodiment of the present invention, the receiving end searches for a BCN signal within a frequency point. The BCN signal adopts a combination of a channel PN sequence corresponding to the current frequency point and a BCN time slice interval.

[0035] Then in step 102, the receiving end performs detection based on the PN sequence and the BCN time slice interval at each search, and if a matching PN sequence is detected and the corresponding configured BCN time slice is the same, then the BCN synchronization mode is entered;

[0036] Next, in step 103, the received signal is sampled and processed to ensure that the different-frequency signal will not interfere with the BCN signal reception at the target frequency.

[0037] It can be understood that the above method can achieve the distinction of channel isolation, thereby solving the BCN heterofrequency reception capability.

[0038] The present invention provides a BCN inter-frequency reception anti-interference method, which can utilize the BCN characteristics of Turmass to adopt a combination of two different methods to distinguish channel isolation, thereby solving the BCN inter-frequency reception capability.

[0039] On the basis of the above embodiment, the BCN signal is detected based on the PN sequence and the BCN time slice interval. If a matching PN sequence is detected and the corresponding configured BCN time slices are the same, the BCN synchronization mode is entered, which specifically includes:

[0040] Adjust the setting value of the BCN time slice interval and the corresponding PN sequence to distinguish different channels.

[0041] Figure 2 Schematic diagram of BCN time slice provided by an embodiment of the present invention. Figure 2 As shown in the figure, PN is the coding method corresponding to sequence 1 and sequence 2. BCN adopts GFSK coding and modulates PN information based on GFSK. Different channels can be distinguished by adjusting the set value of the BCN time slice interval and the corresponding PN sequence to ensure that the interval between adjacent channels is sufficient to improve the accuracy of signal recognition.

[0042] Based on the above embodiment, the method further includes:

[0043] The signal source is confirmed and the main channel blocks are distinguished according to the received PN sequence.

[0044] Figure 3 is a schematic diagram of the main channel blocks provided by an embodiment of the present invention, such as Figure 3 As shown, it can be understood that the embodiment of the present invention needs to confirm the signal source and distinguish the main channel blocks according to the received PN sequence, and then set different BCN time slice intervals during the receiving process to ensure accurate reception of the signal.

[0045] Based on the above embodiment, the channels are allocated in groups, each group of channels uses the same PN sequence and adopts different BCN time slice intervals, and different groups use different PN sequences to distinguish sub-channels within the channel block.

[0046] On the basis of the above embodiment, for the Turmass system, 64 channels are used for channel differentiation, and the channel numbers are allocated from 0 to 63, wherein 0 to 15, 16 to 31, 32 to 47 and 48 to 63 each constitute a channel block.

[0047] Figure 4 Schematic diagram of channel block division provided by an embodiment of the present invention, such as Figure 4 As shown, based on the Turmass system, the embodiment of the present invention uses 64 channels for channel differentiation, and the channel numbers are allocated from 0 to 63, of which 0 to 15, 16 to 31, 32 to 47 and 48 to 63 each constitute a channel block. Each channel block uses the same PN sequence and adopts different BCN time slot intervals, and different PN sequences are used between different groups to distinguish out-of-band channels. At the same time, if they are at the same frequency point, 16 groups of signals at the same frequency point can also be distinguished. This configuration ensures that adjacent channels have sufficient anti-interference capabilities, while isolating the saturation interference that may be caused by large energy signals through BCN time slots, and using orthogonal PN sequences to distinguish farther out-of-band channels, thereby achieving higher reception stability with slightly reduced efficiency, thereby suppressing the systematic interference caused by BCN heterofrequency reception.

[0048] It is understandable that, through the above method, when 16 devices are at the same frequency, the BCN can also be distinguished by time distinction, thus solving the problem of different-frequency reception in the Turmass synchronization process without sacrificing performance.

[0049] Figure 5 is a structural diagram of a BCN inter-frequency receiving anti-interference system provided by an embodiment of the present invention, such as Figure 5 As shown, it includes: a search module 501, a detection module 502 and an anti-interference module 503, wherein:

[0050] The search module 501 is used to search for BCN signals within a frequency point;

[0051] The detection module 502 is used to detect the BCN signal based on the PN sequence and the BCN time slice interval, and if a matching PN sequence is detected and the corresponding configured BCN time slice is the same, then enter the BCN synchronization mode;

[0052] The processing module 503 is used to sample and process the BCN signal in the BCN synchronization mode to ensure that signals at other frequencies cannot interfere with the reception of the frequency.

[0053] For details on how to use the search module 501, the detection module 502 and the processing module 503 to perform BCN inter-frequency reception anti-interference, please refer to Figure 1 The embodiments shown are for reference only and the embodiments of the present invention will not be described in detail herein.

[0054] Figure 6 An example of a structural diagram of an electronic device is shown in FIG. Figure 6 As shown, the server may include: a processor 610, a communication interface 620, a memory 630 and a bus 640, wherein the processor 610, the communication interface 620, and the memory 630 communicate with each other through the bus 640. The communication interface 640 can be used for information transmission between the server and the electronic device. The processor 610 can call the logic instructions in the memory 630 to execute the following method: search for BCN signals within a frequency point; detect the BCN signal based on the PN sequence and the BCN time slice interval, and if a matching PN sequence is detected and the corresponding configured BCN time slice is the same, enter the BCN synchronization mode; sample and process the BCN signal in the BCN synchronization mode to ensure that signals at other frequency points cannot interfere with the reception of this frequency point.

[0055] This embodiment also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the methods provided by the above-mentioned method embodiments, for example, including: searching for BCN signals within a frequency point; detecting the BCN signal based on a PN sequence and a BCN time slice interval, and entering a BCN synchronization mode if a matching PN sequence is detected and the corresponding configured BCN time slices are the same; sampling and processing the BCN signal in the BCN synchronization mode to ensure that signals at other frequency points cannot interfere with the reception of this frequency point.

[0056] The present embodiment provides a non-transitory computer-readable storage medium, which stores computer instructions, and the computer instructions enable the computer to execute the methods provided by the above-mentioned method embodiments, for example, including: searching for BCN signals within a frequency point; detecting the BCN signal based on a PN sequence and a BCN time slice interval, and entering a BCN synchronization mode if a matching PN sequence is detected and the corresponding configured BCN time slices are the same; sampling and processing the BCN signal in the BCN synchronization mode to ensure that signals at other frequency points cannot interfere with the reception of this frequency point.

[0057] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0058] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0059] Finally, the method of the present application is only a preferred implementation scheme and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A BCN inter-frequency reception anti-interference method, characterized in that: include: Search for BCN signals within a frequency point; The BCN signal is detected based on the PN sequence and the BCN time slice interval, and if a matching PN sequence is detected and the corresponding configured BCN time slices are the same, a BCN synchronization mode is entered; The BCN signal is sampled and processed in the BCN synchronization mode to ensure that signals at other frequencies cannot interfere with reception at this frequency.

2. The BCN inter-frequency reception anti-interference method according to claim 1, characterized in that: The BCN signal is detected based on the PN sequence and the BCN time slice interval, and if a matching PN sequence is detected and the corresponding configured BCN time slices are the same, then the BCN synchronization mode is entered, specifically including: Adjust the setting value of the BCN time slice interval and the corresponding PN sequence to distinguish different channels.

3. The BCN inter-frequency reception anti-interference method according to claim 2, characterized in that: The method further comprises: The signal source is confirmed and the main channel blocks are distinguished according to the received PN sequence.

4. The BCN inter-frequency reception anti-interference method according to claim 3, characterized in that: The channels are allocated in groups. Each group of channels uses the same PN sequence and adopts different BCN time slice intervals. Different groups use different PN sequences to distinguish sub-channels within the channel block.

5. The BCN inter-frequency reception anti-interference method according to claim 4, characterized in that: For the Turmass system, 64 channels are used for channel differentiation, and the channel numbers are allocated from 0 to 63, wherein 0 to 15, 16 to 31, 32 to 47 and 48 to 63 each constitute a channel block.

6. A BCN inter-frequency receiving anti-interference system, characterized in that: include: Search module, used to search for BCN signals within a frequency point; A detection module, configured to detect the BCN signal based on a PN sequence and a BCN time slice interval, and enter a BCN synchronization mode if a matching PN sequence is detected and the corresponding configured BCN time slices are the same; The processing module is used to sample and process the BCN signal in the BCN synchronization mode to ensure that signals at other frequencies cannot interfere with the reception of the frequency.

7. An electronic device, characterized in that: The electronic device comprises: a memory and a processor, wherein the memory stores a computer program running on the processor, and is characterized in that the processor implements the method described in any one of claims 1 to 5 when executing the computer program.

8. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, characterized in that: when the computer program is executed by a processor, the method described in any one of claims 1 to 5 is implemented.

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