A signal planning method based on overlapping frequency bands of dual-channel system

Abstract

The present invention relates to the field of signal planning, and in particular to a signal planning method based on overlapping frequency bands of a dual-channel system, comprising the following steps: dividing a working frequency band into two channels, and adding overlapping frequency bands to the two channels; determining the channel planning of the signal according to whether the signal is located entirely on non-overlapping frequency bands: when the signal frequency bands are all located on non-overlapping frequency bands, directly selecting a suitable channel by comparing the signal with the channel frequency band range, and selecting the channel of the frequency band where the signal is located for signal transmission; when the signal frequency bands are not all located on non-overlapping frequency bands, channel planning is performed for a single signal and two signals respectively. The present invention sets overlapping frequency bands between dual channels, does not have additional costs caused by increasing frequency band resources, and realizes resource reuse of overlapping frequency bands without modifying hardware equipment, thereby avoiding the problem of idle channel resources in a system that uses overlapping frequency bands to achieve signal continuity.

Description

Technical Field

[0001] The present invention relates to the field of signal planning, and in particular to a signal planning method based on overlapping frequency bands of a dual-channel system. Background Art

[0002] The frequency band used by existing signals is very wide, and signals from hertz to gigahertz levels are quite common in electromagnetic environments. When designing electromagnetic signal generation equipment, considering the limited channel resources, the common operation is to divide different frequency bands into different hardware channels, use multiple channels for segmented processing, and finally achieve a wider frequency band range through splicing to achieve full coverage.

[0003] There is a problem to be solved in channel processing, that is, there is a bandwidth processing limit for signals at the frequency points at the frequency band boundary. For example, using two channels to achieve full coverage of the [x Hz, y Hz] frequency band, the two channels process the frequency band ranges of [x Hz, m Hz] and (m Hz, y Hz] respectively. Figure 1 As shown, the MHz at the frequency band segmentation point only supports signals that do not consider bandwidth, such as single tone or pulse signals, and cannot process broadband signals.

[0004] In order to carry bandwidth signals at the boundary points, common processing methods are as follows: Figure 2 As shown, a kHz margin is set at the segmentation point to provide limited narrowband signal processing capability within a bandwidth of 2*kHz.

[0005] The method of setting the margin value is essentially to add additional spectrum resources outside the actual working frequency band. This margin will not be used when processing non-boundary frequency signals and will be idle most of the time. Setting too much margin will increase the waste of overall resources, increase costs and reduce utilization. Therefore, this method of setting the boundary margin is only suitable for scenarios where signals with smaller bandwidths are generally processed. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a signal planning method based on overlapping frequency bands of a dual-channel system. By setting overlapping frequency bands between the dual channels, there is no additional cost caused by increasing frequency band resources, and resource reuse of the overlapping frequency bands is achieved without modifying the hardware equipment, thereby avoiding the problem of idle channel resources in a system that uses overlapping frequency bands to achieve signal continuity.

[0007] The objective of the present invention is achieved through the following technical solution: A signal planning method based on overlapping frequency bands of a dual-channel system, comprising the following steps:

[0008] Divide the working frequency band into two channels and add overlapping frequency bands for the two channels: including:

[0009] The working frequency band of [0, y] is divided into two channels. When there is no frequency band overlap, the frequency band range of channel 1 is [0, x], and the frequency band range of channel 2 is (x, y], in Hz, where 0 <x<y;

[0010] In order to send out the signal at the segmentation point x Hz and realize the continuity of the working frequency band, the supported frequency band range of channel one is adjusted to [0, (x + n)], and the supported frequency band range of channel two is adjusted to [(x - m), y], and the overlapping frequency band range of the two channels is set to [(x - m), (x + n)] respectively; m and n are the customized frequency band lengths.

[0011] Determine the signal channel planning based on whether the signals are all located in non-overlapping frequency bands:

[0012] When all signal frequency bands are located in non-overlapping frequency bands, the appropriate channel is selected directly by comparing the signal with the channel frequency band range, and the channel in the frequency band where the signal is located is selected for signal transmission;

[0013] When the signal frequency bands are not all located in non-overlapping frequency bands, channel planning is performed for a single signal and two signals respectively.

[0014] When the signal frequency bands are not all located in non-overlapping frequency bands, the channel planning method for a single signal is as follows:

[0015] If the single signal is a single tone signal, select any channel, and the channel with a lower frequency band, i.e. channel 1, is selected by default;

[0016] If a single signal is a broadband signal, it can be divided into the following cases:

[0017] If the signal frequency band is partially within the frequency band range of channel one and partially within the overlapping frequency band, the signal is sent out through channel one;

[0018] If the signal frequency bands,are all within the overlapping frequency bands, the signal is sent out through,channel one;

[0019] If the signal frequency band is partially within the overlapping frequency band and partially within the frequency band range of channel two, the signal is sent out through channel two.

[0020] When the signal frequency bands are not all located in non-overlapping frequency bands, the channel planning method is as follows:

[0021] The two signals are recorded as signal 1 and signal 2 respectively, and the frequency of signal 2 is higher than that of signal 1;

[0022] If two signals are partially located in the overlapping frequency bands: in fact, signal 1 can only use one of the channels, and similarly, signal 2 can only use the other channel. The two signals are treated as independent of each other, and the channels used by the signals are directly divided according to the division steps of a single signal;

[0023] If both signals are in the overlapping frequency band: sort by frequency, place the higher frequency signal 2 on channel 1 first, and then place the lower frequency signal 1 on channel 2;

[0024] If part of signal 1 is in the overlapping frequency band and all of signal 2 is in the overlapping frequency band, signal 1 can only use channel 1 and there is an alternative for signal 2. Signal 1 is arranged to use channel 1 first, and signal 2 can only use channel 2 at this time;

[0025] If part of signal 2 is in the overlapping frequency band and all of signal 1 is in the overlapping frequency band, signal 2 can only use channel 2 and there is an alternative for signal 1. Signal 1 is arranged to use channel 1 and signal 2 uses channel 2.

[0026] The beneficial effects of the present invention are as follows: by setting overlapping frequency bands between dual channels, the present invention does not cause additional costs due to increased frequency band resources, and implements resource reuse of overlapping frequency bands without the need to modify hardware equipment, thereby avoiding the problem of idle channel resources in systems that use overlapping frequency bands to achieve signal continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the frequency segmentation of two channels;

[0028] Figure 2 It is a schematic diagram of sending a bandwidth signal at a boundary frequency point through a margin;

[0029] Figure 3 A schematic diagram of the frequency band division of each channel without overlap;

[0030] Figure 4 A schematic diagram of the frequency band division of each channel with overlap;

[0031] Figure 5 It is a schematic diagram showing that a single signal is located in an independent frequency band of each channel;

[0032] Figure 6 A schematic diagram of a single signal partially located in channel one and partially located in an overlapping frequency band;

[0033] Figure 7 A schematic diagram showing a single signal completely located within the overlapping frequency band;

[0034] Figure 8 It is a schematic diagram of a single signal partially located in the overlapping frequency band and partially located in channel two;

[0035] Fig. 9 A schematic diagram showing that a single signal exceeds the overlapping frequency band range and cannot be placed;

[0036] Fig.10 It is a schematic diagram showing that two signals are partially located in the overlapping frequency band;

[0037] Fig.11 It is a schematic diagram showing that both signals are completely in the overlapping frequency band;

[0038] Fig.12 It is a schematic diagram that a portion of signal 1 is located in the overlapping frequency band and a whole of signal 2 is located in the overlapping frequency band. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0040] The present invention sets an overlapping frequency band between the dual channels. The overlapping frequency band belongs to the original working frequency band. Its essence is a resource reuse, and there is no additional cost caused by increasing the frequency band resources.

[0041] Overlapping frequency band division of dual-channel system Figure 3 As shown:

[0042] Divide the working frequency band into two channels and add overlapping frequency bands for the two channels: including:

[0043] The design premise is that the actual use requirement is to divide the working frequency band [0,y Hz] into Figure 3 For the two channels shown in the figure, when there is no frequency band overlap, the frequency band range processed by each channel is [0, x], (x, y] Hz respectively.

[0044] In order to send out the signal at the segmentation point x Hz and realize the continuity of the working frequency band, the supported frequency band range of the first channel is adjusted to [0, (x + n)] and the supported frequency band range of the second channel is adjusted to [(x - m), y]. The two channels are set as follows Figure 4 The overlapping frequency band range of [(x - m), (x +n)] is shown.

[0045] Determine the signal channel planning based on whether the signals are all located in non-overlapping frequency bands:

[0046] When the signal frequency bands are all located in non-overlapping frequency bands, such as Figure 5 As shown, the appropriate channel can be selected directly by comparing the signal with the channel frequency band range;

[0047] When the signal frequency bands are not all located in non-overlapping frequency bands, channel planning is performed for a single signal and two signals respectively.

[0048] First, the channel selection method for a single signal in the overlapping frequency band interval is explained:

[0049] When the signal frequency band appears in the overlapping frequency band, it is judged by the following conditions:

[0050] (1) For single-tone signals, you can select any channel, and the channel with a lower frequency band is selected by default;

[0051] (2) For broadband signals:

[0052] a) If the signal frequency band is Figure 6 As shown, part of it is in the frequency band of the first channel, and part of it is in the overlapping frequency band, then the signal is sent out through channel one;

[0053] b) If the signal frequency band is Figure 7 As shown, all are located in overlapping frequency bands, and the signal is sent through channel one;

[0054] c) If the signal frequency band is Figure 8 As shown, part of the signal is located in the overlapping frequency band and part of the signal is located in the frequency band range of the second channel, so the signal is sent out through channel two.

[0055] The overlapping frequency band range is limited, and only supports signals with a bandwidth not greater than m + n Hz to be sent at the segmented frequency points. If the signal bandwidth itself is too large, such as Fig. 9 As shown in the figure, if the value range of the overlapping frequency band is exceeded, it cannot be planned on any channel. The values ​​of m and n are determined according to the actual usage.

[0056] The biggest advantage of the overlapping frequency band setting is that the signals in the overlapping frequency band area of ​​the two channels can be placed on the two channels and work simultaneously, that is, there will be no situation where the overlapping frequency band of a certain channel will not be used.

[0057] The following describes the division steps when two signals are in overlapping frequency bands:

[0058] If two signals are partially located in the overlapping frequency bands, such as Fig.10 As shown:

[0059] In fact, signal 1 can only use channel 1, and similarly, signal 2 can only use channel 2. The two signals can be regarded as being processed independently of each other, and the channels used by the signals can be directly divided according to the usual steps for dividing a single signal.

[0060] If both signals are in the overlapping frequency band, such as Fig.11 As shown:

[0061] Use simple priority sorting, that is, sort by frequency, and place the higher frequency signal 2 on channel 1 first, and then place the lower frequency signal 1 on channel 2.

[0062] In this case, even if the two signals overlap in the frequency domain, they can be isolated through different channels, so that they can be emitted simultaneously and avoid mutual interference between the signals, thereby improving spectrum utilization.

[0063] Consider further that in the process of planning the signal distribution channel, if the allocation priority is determined only by simple conditions such as signal frequency or signal bandwidth, such as Fig.12 In the case shown, signal 1 is partially located in the overlapping frequency band and signal 2 is completely located in the overlapping frequency band. At this time, signal 1 can only use channel 1 while signal 2 has an alternative. If simple priority arrangement is used and the signal with higher frequency is arranged first as mentioned above, signal 2 located in the overlapping frequency band will occupy channel 1 first, resulting in signal 1, which can only use channel 1, having no channel available.

[0064] In order to avoid the above phenomenon and make more effective use of spectrum resources, it is necessary to lower the priority of signals that are located in overlapping frequency bands and can select more channels when planning multiple signals, so as to ensure that signals with fewer available channels are arranged first. Fig.12 For example, signal 1 should be arranged to use channel 1 first, and signal 2 can only use channel 2 at this time, but it can be ensured that both signals are arranged to the appropriate channels.

[0065] According to the above judgment steps, the overlapping frequency bands on the two channels have application scenarios, there is no waste of frequency bands, and the utilization efficiency of frequency band resources is effectively improved.

[0066] This method provides a planning idea for signals in overlapping frequency bands of a dual-channel system on channels, and determines the planning steps when signals in overlapping frequency bands appear in such channels. The method has the advantage of being able to implement resource reuse of overlapping frequency bands without modifying hardware devices, and solves the problem of idle channel resources in a system that uses overlapping frequency bands to achieve signal continuity in specific scenarios.

[0067] The above is a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A signal planning method based on overlapping frequency bands of a dual-channel system, characterized in that: The following steps are involved: Divide the working frequency band into two channels and add overlapping frequency bands for the two channels; Determine the signal channel planning based on whether the signals are all located in non-overlapping frequency bands: When all signal frequency bands are located in non-overlapping frequency bands, the appropriate channel is selected directly by comparing the signal with the channel frequency band range, and the channel in the frequency band where the signal is located is selected for signal transmission; When the signal frequency bands are not all located in non-overlapping frequency bands, channel planning is performed separately for single signal and two signals: When the signal frequency bands are not all located in non-overlapping frequency bands, the channel planning method for the two signals is as follows: The two signals are recorded as signal 1 and signal 2 respectively, and the frequency of signal 2 is higher than that of signal 1; If two signals are partially located in the overlapping frequency bands: in fact, signal 1 can only use one of the channels, and similarly, signal 2 can only use the other channel. The two signals are treated as independent of each other, and the channels used by the signals are directly divided according to the division steps of a single signal; If both signals are in the overlapping frequency band: sort by frequency, place the higher frequency signal 2 on channel 1 first, and then place the lower frequency signal 1 on channel 2; If part of signal 1 is in the overlapping frequency band and all of signal 2 is in the overlapping frequency band, signal 1 can only use channel 1 and there is an alternative for signal 2. Signal 1 is arranged to use channel 1 first, and signal 2 can only use channel 2 at this time; If part of signal 2 is in the overlapping frequency band and all of signal 1 is in the overlapping frequency band, signal 2 can only use channel 2 and there is an alternative for signal 1. Signal 1 is arranged to use channel 1 and signal 2 uses channel 2.

2. A signal planning method based on overlapping frequency bands of a dual-channel system according to claim 1, characterized in that: The step of dividing the working frequency band into two channels and adding an overlapping frequency band to the two channels includes: The working frequency band of [0, y] is divided into two channels. When there is no frequency band overlap, the frequency band range of channel one is [0, x], and the frequency band range of channel two is (x, y], in Hz, where 0 <x<y; In order to send out the signal at the segmentation point x Hz and realize the continuity of the working frequency band, the supported frequency band range of channel one is adjusted to [0, (x + n)], and the supported frequency band range of channel two is adjusted to [(x - m), y], and the overlapping frequency band range of the two channels is set to [(x - m), (x + n)] respectively; m and n are the customized frequency band lengths.

3. A signal planning method based on overlapping frequency bands of a dual-channel system according to claim 2, characterized in that: When the signal frequency bands are not all located in non-overlapping frequency bands, the channel planning method for a single signal is as follows: If the single signal is a single tone signal, select any channel, and the channel with a lower frequency band, i.e. channel 1, is selected by default; If a single signal is a broadband signal, it can be divided into the following cases: If the signal frequency band is partially within the frequency band range of channel one and partially within the overlapping frequency band, the signal is sent out through channel one; If the signal frequency bands,are all within the overlapping frequency bands, the signal is sent out through,channel one; If the signal frequency band is partially within the overlapping frequency band and partially within the frequency band range of channel two, the signal is sent out through channel two.

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