Spectrum sharing method, apparatus, device, and computer-readable storage medium

Abstract

The application discloses a spectrum sharing method, device, equipment and computer readable storage medium. The spectrum sharing method comprises the following steps: if a to-be-tested cell is a high-interference area, frequency multiplexing is performed according to a first frequency multiplexing coefficient; and if the to-be-tested cell is a low-interference area, frequency multiplexing is performed according to a second frequency multiplexing coefficient, wherein the first frequency multiplexing coefficient is greater than the second frequency multiplexing coefficient. The application avoids the occurrence of the phenomenon of co-frequency interference between cells.

Description

Technical Field

[0001] This invention relates to the field of data processing technology, and in particular to a spectrum sharing method, apparatus, device, and computer-readable storage medium. Background Technology

[0002] Sharing spectrum between NB-IoT (Narrow Band Internet of Things) and 5G NR is an inevitable trend. However, NB-IoT suffers from severe inter-cell co-channel interference. To combat the bit error rate caused by high interference, NB-IoT employs multiple retransmissions for error correction, but this can lead to: 1) increased power consumption of terminals, reducing battery life; and 2) frequent retransmissions constantly occupying wireless resources, causing network congestion. Furthermore, NB-IoT's in-band mode suffers approximately 8dB of loss in network coverage and capacity compared to guard band (GB) and stand-alone (SA) modes. Therefore, NB-IoT primarily considers GB and SA modes. If 5G NR and NB-IoT share spectrum, NB-IoT can only use the 5G NR guard band. However, the GB within the 5G NR operating band is smaller, resulting in fewer frequencies for NB-IoT, insufficient reusable carrier frequencies, and a higher probability of interference. Summary of the Invention

[0003] The main objective of this invention is to provide a spectrum sharing method, apparatus, device, and computer-readable storage medium, aiming to solve the technical problem of how to avoid co-channel interference between cells.

[0004] To achieve the above objectives, the present invention provides a spectrum sharing method, comprising the following steps:

[0005] If the cell under test is in a high-interference area, then frequency reuse shall be performed according to the first frequency reuse factor;

[0006] If the cell under test is a low-interference area, then frequency reuse is performed according to the second frequency reuse factor, wherein the first frequency reuse factor is greater than the second frequency reuse factor.

[0007] Optionally, the spectrum sharing method further includes the following steps:

[0008] Collect the signal-to-interference ratio (SIR) of the signal in the cell under test, and detect whether the SIR is less than a preset value;

[0009] If the signal-to-interference ratio is less than a preset value, then the proportion of the sampling points corresponding to the signal-to-interference ratio is determined, and it is detected whether the proportion is greater than the preset proportion.

[0010] If the ratio value is greater than the preset ratio value, then the cell under test is determined to be a high interference area.

[0011] Optionally, after the step of detecting whether the signal-to-interference ratio is less than a preset value, the method includes:

[0012] If the signal-to-interference ratio is greater than or equal to a preset value, then the cell under test is determined to be a low-interference area;

[0013] If the signal-to-interference ratio (SIR) is less than a preset value, and the proportion of sampling points corresponding to the SIR is less than or equal to a preset proportion value, then the cell under test is determined to be a low-interference area.

[0014] Optionally, after the step of frequency reuse according to the first frequency reuse factor, the method further includes:

[0015] If the cell under test is to be expanded, then the coverage carrier frequency in the first frequency reuse coefficient is determined, and the center frequency point of the coverage carrier frequency is determined.

[0016] The expansion carrier frequency is determined based on the preset guard band interval and the center frequency of the covered carrier frequency, and expansion is performed based on the expansion carrier frequency. The sum of the value corresponding to the center frequency of the expanded carrier frequency and the value corresponding to the guard band interval is equal to the value corresponding to the center frequency of the covered carrier frequency.

[0017] Optionally, the step of expanding the capacity according to the expanded carrier frequency includes:

[0018] The number of expansion carrier frequencies is determined based on the number of coverage carrier frequencies, and when there are multiple expansion carrier frequencies, it is detected whether there are unusable expansion carrier frequencies among the expansion carrier frequencies.

[0019] If there are no unusable expansion carrier frequencies among the expansion carrier frequencies, the difference between the coverage carrier frequency and the expansion carrier frequency is calculated sequentially. When the difference is greater than or equal to the preset guard band interval, the coverage carrier frequency and the expansion carrier frequency are combined to complete the expansion.

[0020] Optionally, after the step of detecting whether there are unusable expansion carrier frequencies among the expansion carrier frequencies, the method includes:

[0021] If there is an unusable expansion carrier frequency among the expansion carrier frequencies, then determine the other expansion carrier frequencies among the expansion carrier frequencies besides the unusable expansion carrier frequencies.

[0022] When the difference between the coverage carrier frequency and the other expansion carrier frequencies is greater than or equal to a preset guard band interval, the coverage carrier frequency and the other expansion carrier frequencies are combined to complete the expansion.

[0023] Optionally, the step of frequency reuse according to the first frequency reuse factor includes:

[0024] Detect whether the available frequency corresponding to the cell under test is less than the preset maximum frequency value;

[0025] If the available frequency is less than the preset maximum frequency, then the low service area and high service area in the cell under test are determined, and the low service area is controlled to reuse frequency according to the second frequency reuse coefficient, and the high service area is controlled to reuse frequency according to the first frequency reuse coefficient.

[0026] Furthermore, to achieve the above objectives, the present invention also provides a spectrum sharing device, comprising:

[0027] The high interference area module is used to perform frequency reuse according to the first frequency reuse factor if the cell under test is a high interference area.

[0028] The low-interference area module is used to perform frequency reuse according to a second frequency reuse factor if the cell under test is a low-interference area, wherein the first frequency reuse factor is greater than the second frequency reuse factor.

[0029] In addition, to achieve the above objectives, the present invention also provides a spectrum sharing device, which includes a memory, a processor, and a spectrum sharing program stored in the memory and executable on the processor. When the spectrum sharing program is executed by the processor, it implements the steps of the spectrum sharing method as described above.

[0030] In addition, to achieve the above objectives, the present invention also provides a computer-readable storage medium storing a spectrum sharing program, which, when executed by a processor, implements the steps of the spectrum sharing method as described above.

[0031] This invention avoids frequency interference between cells by directly reusing frequencies according to a first frequency reuse factor when the cell under test is determined to be in a high-interference area, and directly reusing frequencies according to a second frequency reuse factor when the cell under test is in a low-interference area. Furthermore, using different frequency reuse factors for different interference areas also avoids insufficient reused carrier frequencies, thus saving frequency resources. This invention achieves the goal of reducing the probability of frequency interference while avoiding insufficient reused carrier frequencies. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the terminal / device structure of the hardware operating environment involved in the embodiments of the present invention;

[0033] Figure 2 This is a flowchart illustrating the first embodiment of the spectrum sharing method of the present invention;

[0034] Figure 3 This is a schematic diagram of the device modules of the spectrum sharing device of the present invention;

[0035] Figure 4 This is a schematic diagram of the frequency planning scheme for dual-carrier networking in the spectrum sharing method of the present invention;

[0036] Figure 5 This refers to the frequency protection interval for 5G NR and NB-IoT shared spectrum in the spectrum sharing method of this invention.

[0037] Figure 6 This is a schematic diagram of frequency planning schemes with different frequency reuse coefficients in the spectrum sharing method of the present invention;

[0038] Figure 7 This is a schematic diagram of the quasi-heterofrequency dual-carrier frequency planning scheme when the frequency reuse factor is 3 in the spectrum sharing method of the present invention;

[0039] Figure 8 This is a schematic diagram of the quasi-different frequency dual-carrier networking scheme in the spectrum sharing method of the present invention;

[0040] Figure 9 This is a schematic diagram of the quasi-heterofrequency dual-carrier frequency planning scheme when the frequency reuse coefficient is 4 in the spectrum sharing method of the present invention;

[0041] Figure 10 This is a schematic diagram of a quasi-different frequency dual-carrier networking scheme when frequency resources are insufficient in the spectrum sharing method of the present invention.

[0042] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0044] like Figure 1 As shown, Figure 1 This is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiments of the present invention.

[0045] In this embodiment of the invention, the terminal is a spectrum sharing device.

[0046] like Figure 1As shown, the terminal may include: a processor 1001, such as a CPU; a network interface 1004; a user interface 1003; a memory 1005; and a communication bus 1002. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard. Optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be high-speed RAM or non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0047] Optionally, the terminal may also include a camera, RF (Radio Frequency) circuitry, sensors, audio circuitry, a WiFi module, and so on. These sensors may include light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display screen according to the ambient light level, while the proximity sensor can turn off the display screen and / or backlight when the terminal device is moved to the ear. Of course, the terminal device may also be equipped with other sensors such as a gyroscope, barometer, hygrometer, thermometer, and infrared sensor, which will not be elaborated upon here.

[0048] Those skilled in the art will understand that Figure 1 The terminal structure shown does not constitute a limitation on the terminal and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0049] like Figure 1 As shown, the memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a spectrum sharing program.

[0050] exist Figure 1 In the terminal shown, network interface 1004 is mainly used to connect to the backend server and communicate with it; user interface 1003 is mainly used to connect to the client (user terminal) and communicate with it; while processor 1001 can be used to call the spectrum sharing program stored in memory 1005 and perform the following operations:

[0051] Reference Figure 2 This invention provides a spectrum sharing method. In a first embodiment of the spectrum sharing method, the spectrum sharing method includes the following steps:

[0052] Step S10: If the cell under test is a high interference area, then frequency reuse is performed according to the first frequency reuse coefficient.

[0053] Step S20: If the cell under test is a low-interference area, then frequency reuse is performed according to the second frequency reuse coefficient, wherein the first frequency reuse coefficient is greater than the second frequency reuse coefficient.

[0054] Currently, NB-IoT primarily operates in 800MHz / 900MHz / 1800MHz, sharing spectrum with GSM (Global System for Mobile Communications) / LTE (Long Term Evolution). There are currently no networks where NB-IoT and 5G NR share spectrum. Furthermore, when sharing spectrum, inter-cell interference and frequency reuse issues arise. Therefore, in this embodiment, to address the severe inter-cell co-channel interference and the frequency reuse problem of NB-IoT within limited bandwidth, frequency planning for NB-IoT is first performed to establish appropriate frequency reuse coefficients. Frequency planning must meet the following principles:

[0055] (1) A guard band interval of at least 100kHz should be reserved between two frequency points in the same cell; otherwise, significant interference will occur. Therefore, in NB-IoT dual-carrier co-frequency networking, the distance between the center frequencies of the two carrier frequencies is 300kHz. For example, as Figure 4 As shown, the spacing between the center frequency points F1 and F2 of the carrier frequency group is 300kHz.

[0056] (2) The NB-IoT frequency is spaced 200kHz apart from other system frequencies, i.e. Figure 5 As shown, the spacing between the center frequencies of adjacent RBs in the 5GNR center frequency of NB-IoT is 400kHz.

[0057] Furthermore, NB-IoT belongs to LPWA (Low Power Wide Area) networks. To ensure excellent system coverage performance, its industry chain mainly focuses on mid-to-low frequency (Sub 2GHz). Below 2GHz, due to limited frequency resources, the bandwidth supported by 5G NR is generally less than 40MHz. With a 30MHz carrier frequency bandwidth, the GB bandwidth is at its maximum, at 1.2MHz. Excluding adjacent frequency guard bands, the maximum usable bandwidth for NB-IoT is 800MHz.

[0058] Therefore, in this embodiment, within the maximum frequency bandwidth range (e.g., 800MHz), four frequency reuse schemes for NB-IoT can be set, with frequency reuse coefficients of 1, 2, 3, and 4, respectively. Frequency reuse coefficients 1 and 2 are used as the first frequency reuse coefficients, and frequency reuse coefficients 3 and 4 are used as the second frequency reuse coefficients. The first frequency reuse coefficient is greater than the second frequency reuse coefficient. For example, as... Figure 6 As shown, frequency reuse factor 1 is FR2; frequency reuse factor 2 is FR2 and FR3; frequency reuse factor 3 is FR2, FR3 and FR4; and frequency reuse factor 4 is FR1, FR2, FR3 and FR4. Furthermore, FR1, FR2, FR3 and FR4 all fall within the 800kHz range.

[0059] After establishing the first and second frequency reuse coefficients, it is necessary to determine the regional interference level of the cell under test to identify whether it is a high-interference cell. The regional interference level can be assessed using the proportion of RS-SINR sampling points. If the RS-SINR value of co-frequency networks within the region is less than α, and the proportion of sampling points is greater than β, it is defined as a high-interference region; otherwise, it is defined as a low-interference region. When the interference level within the region changes, the frequency planning scheme can be modified accordingly. The value range of α is generally [-3dB, 0dB], and the value range of β is generally [30%, 60%].

[0060] It should be noted that RS-SINR, or Signal-to-Interference Ratio (SIR), is one of the most important indicators for measuring network coverage quality. Its value can be obtained through a MapReduce (MR) system or drive testing. Both MR systems and drive test data can yield a series of RS-SINR values ​​within a cell area; these values ​​can be differentiated by thresholds, and the ratio can be calculated based on the number of values.

[0061] When the cell under test is determined to be in a low-interference area (i.e., an area with low or controllable interference), frequency reuse can be directly performed according to the second frequency reuse factor, such as frequency reuse factor 1 or 2, to improve spectral efficiency. However, if the cell under test is in a high-interference area (i.e., an area with high interference), frequency reuse can be performed according to the first frequency reuse factor, such as frequency reuse factor 3 or 4, to increase the isolation distance between cells on the same frequency and reduce the level of interference on the same frequency. Furthermore, when the frequency reuse factor is 4, according to the four-color principle of topology, even irregular cellular network structures can achieve inter-frequency communication between adjacent cells, meeting the interference suppression requirements of NB-IoT networks. The four-color principle has mature computer implementation schemes, so relatively ideal NB-IoT frequency planning can be achieved with the help of computers without human intervention.

[0062] Furthermore, in this embodiment, NB-IoT and 5G NR share the spectrum, enabling the two systems to share hardware and saving network construction and operation and maintenance costs. The dynamic frequency reuse scheme can better balance network coverage, network interference, and network capacity. The quasi-different-frequency dual-carrier networking scheme can achieve dual-carrier networking with approximately half the spectrum resources of traditional schemes.

[0063] In this embodiment, when the cell under test is determined to be in a high-interference area, frequency reuse is performed directly according to the first frequency reuse factor, and when the cell under test is in a low-interference area, frequency reuse is performed directly according to the second frequency reuse factor. This avoids the phenomenon of frequency interference between cells. Furthermore, using different frequency reuse factors for different interference areas also avoids the phenomenon of insufficient reused carrier frequency, thus saving frequency resources. This achieves the goal of reducing the probability of frequency interference while avoiding the phenomenon of insufficient reused carrier frequency.

[0064] Furthermore, based on the first embodiment of the present invention described above, a second embodiment of the spectrum sharing method of the present invention is proposed. In this embodiment, the spectrum sharing method further includes the following steps:

[0065] Step a: Collect the signal-to-interference ratio (SIR) of the signal in the cell under test, and detect whether the SIR is less than a preset value;

[0066] Step b: If the signal-to-interference ratio is less than a preset value, determine the proportion of the sampling points corresponding to the signal-to-interference ratio, and detect whether the proportion is greater than a preset proportion.

[0067] Step c: If the ratio value is greater than the preset ratio value, then the cell under test is determined to be a high interference area.

[0068] In this embodiment, the signal-to-interference ratio (SIR) of the cell under test needs to be collected first. This SIR can be obtained through an MR system or through drive testing. When the SIR of each sampling point in the cell under test is collected, it is necessary to check whether each SIR is less than a preset value. If the SIR is less than the preset value (α) and the proportion of each sampling point (i.e., the proportion of the sampling point in the cell) is greater than a preset proportion (β), the cell under test is directly determined to be a high-interference cell; otherwise, it is determined to be a low-interference cell. Here, the SIR is the ratio of the interference signal strength to the target echo signal strength.

[0069] In this embodiment, the accuracy of identifying high-interference cells is improved by determining whether the cell under test is a high-interference cell based on whether the signal-to-interference ratio is less than a preset value and whether the proportion of sampling points is greater than a preset proportion.

[0070] Specifically, after the step of detecting whether the signal-to-interference ratio is less than a preset value, the following steps are included:

[0071] Step d: If the signal-to-interference ratio is greater than or equal to a preset value, then the cell under test is determined to be a low-interference area.

[0072] Step e: If the signal-to-interference ratio is less than a preset value, and the proportion of sampling points corresponding to the signal-to-interference ratio is less than or equal to a preset proportion value, then the cell under test is determined to be a low-interference area.

[0073] In this embodiment, there are two methods to determine the cell under test. First, when the signal-to-interference ratio (SIR) is greater than or equal to a preset value (i.e., the RS-SINR value of the co-frequency network within the region is ≥ α), the cell under test is determined to be a low-interference cell. Second, when the SIR is less than the preset value and the proportion of sampling points is less than or equal to a preset proportion (i.e., the RS-SINR value of the co-frequency network within the region is < α, and the proportion of sampling points is less than or equal to β), the cell under test can also be determined to be a low-interference cell. The value range of α is generally [-3dB, 0dB]. The value range of β is generally [30%, 60%].

[0074] In this embodiment, the low-interference region is determined based on the signal-to-interference ratio and the ratio of sampling points, thereby ensuring the accuracy of determining the low-interference region.

[0075] Furthermore, based on the first or second embodiment of the present invention described above, a third embodiment of the spectrum sharing method of the present invention is proposed. In this embodiment, after step S10, the step of frequency reuse according to the first frequency reuse coefficient, the method further includes:

[0076] Step f: If the cell under test is to be expanded, then determine the coverage carrier frequency in the first frequency reuse coefficient, and determine the center frequency point of the coverage carrier frequency.

[0077] Step g: Determine the expansion carrier frequency based on the preset guard band interval and the center frequency of the covered carrier frequency, and expand the capacity based on the expansion carrier frequency. The sum of the value corresponding to the center frequency of the expanded carrier frequency and the value corresponding to the guard band interval is equal to the value corresponding to the center frequency of the covered carrier frequency.

[0078] When it is determined that a cell under test is to be expanded, the cell is currently using the first frequency reuse factor, which is either 3 or 4. Furthermore, with frequency reuse factors of 3 and 4, the required frequency resources for dual-carrier networking are 1.2MHz and 1.6MHz respectively. However, there are not enough frequencies available for expansion carriers when 5G NR and NB-IoT share the spectrum. Therefore, when the frequency reuse factor is 3, the center frequencies of the carriers used for frequency planning are: FR5 + 100kHz = FR2; FR6 + 100kHz = FR3; FR7 + 100kHz = FR4. Here, FR2, FR3, and FR4 are coverage carriers, and FR5, FR6, and FR7 are expansion carriers. Then, FR2 and FR7, FR3 and FR5, and FR4 and FR6 are combined to complete the expansion. Specifically, FR7 - FR2 = 300kHz; FR3 - FR5 = 100kHz; FR4 - FR6 = 100kHz. Therefore, it also meets the requirement of a 100kHz guard band spacing for the same cell's carrier frequency. For example, such as Figure 7-8 As shown, when the frequency reuse factor is 3, the coverage carrier frequencies FR2, FR3 and FR4 are determined, as well as their corresponding expansion carrier frequencies FR5, FR6 and FR7, and their actual maximum bandwidth frequency is 700kHz, which is less than 800kHz.

[0079] The transmit power of the coverage carrier frequency is set to P, and the transmit power of the expansion carrier frequency is set to Pm. The value of m typically ranges from {1dB, 2dB, 3dB}. Based on the link budget, the coverage range difference between the coverage carrier frequency and the expansion carrier frequency is between 5% and 20%. The total frequency bandwidth requirement is 700kHz, saving 71% of frequency resources compared to the traditional 1.2MHz frequency bandwidth requirement.

[0080] When the frequency reuse factor is 4, the center frequencies of the carriers used in frequency planning are FR5+100kHz=FR2; FR6+100kHz=FR3; FR7+100kHz=FR4; FR4+100kHz=FR8. Among these, FR1, FR2, FR3, and FR4 are coverage carriers, while FR5, FR6, FR7, and FR8 are expansion carriers. Further expansion is achieved by combining FR1 with FR8, FR2 with FR7, FR3 with FR5, and FR4 with FR6. Specifically, FR8-FR1=700kHz; FR7-FR2=300kHz; FR3-FR5=100kHz; FR4-FR6=100kHz. This also satisfies the requirement of a 100kHz guard band spacing for carriers within the same cell. For example, as... Figure 9As shown, when the frequency reuse factor is 4, the coverage carrier frequencies FR1, FR2, FR3 and FR4 are determined, as well as their corresponding expansion carrier frequencies FR5, FR6, FR7 and FR8, and their actual maximum bandwidth frequency is 700kHz, which is less than 800kHz.

[0081] It should be noted that in actual network deployment, it may be necessary to reserve the guard band between NB-IoT and adjacent systems at higher frequencies. FR8 is unavailable, while FR1 can be combined with FR6 / FR7. Due to the frequency difference between the expansion carrier frequency and the coverage carrier frequency, inter-cell interference remains controllable. Furthermore, FR7-FR1 = 500kHz and FR6-FR1 = 300kHz, meeting the requirement of a 100kHz guard band spacing within the same cell. The transmit power of the coverage carrier frequency is set to P, and the transmit power of the expansion carrier frequency is set to Pm. The value of m is generally in the range of {1dB, 2dB, 3dB}. Based on the link budget, the coverage range difference between the coverage carrier frequency and the expansion carrier frequency is between 5% and 20%. In this case, the total frequency bandwidth requirement is 800kHz (when FR8 is unavailable), saving 100% of frequency resources compared to the traditional 1.6MHz frequency bandwidth requirement.

[0082] In this embodiment, the expansion carrier frequency is determined based on the guard band interval and the center frequency of the carrier frequency covering the carrier frequency, thereby ensuring the effectiveness of the obtained expansion carrier frequency.

[0083] Specifically, the steps for expanding the capacity based on the expanded carrier frequency include:

[0084] Step c: Determine the number of expansion carrier frequencies based on the number of coverage carrier frequencies, and when there are multiple expansion carrier frequencies, detect whether there are unusable expansion carrier frequencies among the expansion carrier frequencies;

[0085] In this embodiment, when determining the expanded carrier frequency, it is necessary to first determine the pre-set guard band interval, such as 100kHz, to reduce interference, and also to determine the center frequency points of all covered carrier frequencies in the frequency reuse coefficient. Furthermore, the sum of the center frequency point of the expanded carrier frequency and the guard band interval is equal to the center frequency point of the covered carrier frequency. Therefore, after determining the guard band interval and the center frequency point of the covered carrier frequency, the center frequency point of the expanded carrier frequency can be obtained. Since the interval between carrier center frequencies must be greater than or equal to the guard band interval, the difference between the center frequency point of the covered carrier frequency and the center frequency point of the expanded carrier frequency must be greater than or equal to the guard band interval.

[0086] When expanding capacity, the number of coverage carrier frequencies needs to be determined first. Since the expansion carrier frequencies and coverage carrier frequencies are in one-to-one correspondence, the initial number of expansion carrier frequencies is the same as the number of coverage carrier frequencies. When there are multiple expansion carrier frequencies, the frequency reuse factor is 3 or 4. It is necessary to detect whether there are any unusable expansion carrier frequencies among the generated expansion carrier frequencies, and to perform different operations based on different detection results. Unusable expansion carrier frequencies are those that cannot be used normally.

[0087] Step d: If there are no unusable expansion carrier frequencies among the expansion carrier frequencies, then calculate the difference between the coverage carrier frequency and the expansion carrier frequency in sequence, and when the difference is greater than or equal to the preset guard band interval, combine the coverage carrier frequency and the expansion carrier frequency to complete the expansion.

[0088] When it is determined that there are no unusable expansion carrier frequencies among the various expansion carrier frequencies, it is necessary to calculate the difference between each coverage carrier frequency and the expansion carrier frequency. Only when all differences are greater than or equal to the pre-set guard band interval will the coverage carrier frequency and the expansion carrier frequency be combined to complete the expansion process. In this expansion process, each coverage carrier frequency has one and only one corresponding expansion carrier frequency.

[0089] In this embodiment, when there are multiple expansion carrier frequencies and no unusable expansion carrier frequencies exist, and when the difference between the coverage carrier frequency and the expansion carrier frequency is greater than or equal to the guard band interval, the coverage carrier frequency and the expansion carrier frequency are combined to complete the expansion, thereby ensuring the effective implementation of the expansion.

[0090] Specifically, after the step of detecting whether there are unusable expansion carrier frequencies among the expansion carrier frequencies, the process includes:

[0091] Step c: If there is an unusable expansion carrier frequency among the expansion carrier frequencies, then determine the other expansion carrier frequencies among the expansion carrier frequencies besides the unusable expansion carrier frequencies.

[0092] When it is determined that there are unusable expansion carrier frequencies among the various expansion carrier frequencies, it is necessary to identify the expansion carrier frequencies other than the unusable ones, i.e., the other expansion carrier frequencies.

[0093] Step d: When the difference between the coverage carrier frequency and the other expansion carrier frequencies is greater than or equal to the preset guard band interval, the coverage carrier frequency and the other expansion carrier frequencies are combined to complete the expansion.

[0094] After determining the other expansion carrier frequencies, it is necessary to calculate the difference between the coverage carrier frequency and the other expansion carrier frequencies. If this difference is greater than or equal to the pre-set guard band interval, the other expansion carrier frequency and the coverage carrier frequency are directly combined to complete the expansion process. It should be noted that at this time, one expansion carrier frequency may correspond to two coverage carrier frequencies.

[0095] In this embodiment, when it is determined that there are unusable expansion carrier frequencies among the various expansion carrier frequencies, other expansion carrier frequencies are first determined. When the difference between the coverage carrier frequency and other expansion carrier frequencies is greater than or equal to the guard band interval, the coverage carrier frequency and the expansion carrier frequency are combined to complete the expansion, thereby ensuring the effective implementation of the expansion.

[0096] Furthermore, if the cell under test is a low-interference area, the low-interference area is controlled to reuse frequencies according to the second frequency reuse coefficient. When the cell under test is to be expanded, the coverage carrier frequency in the second frequency reuse coefficient is added according to the preset guard band interval to complete the expansion.

[0097] In this embodiment, when the cell under test is determined to be a low-interference area, it is necessary to determine the second frequency reuse factor corresponding to the low-interference area, such as frequency reuse factor 1 or 2. Furthermore, when the cell under test needs to be expanded, expansion can be performed by adding a new carrier frequency to frequency reuse factor 1 or 2. That is, when the frequency reuse factor is 1, a new carrier frequency can be added as the expansion carrier frequency after passing through a guard band interval based on the coverage carrier frequency in the second frequency reuse factor 1, thereby completing the expansion process. If the frequency reuse factor is 2, then one cell uses FR2 as the coverage carrier frequency and FR4 as the expansion carrier frequency; another cell uses FR3 as the coverage carrier frequency and FR1 as the expansion carrier frequency.

[0098] In this embodiment, when the cell under test is determined to be a low-interference cell, frequency reuse is performed directly according to the second frequency reuse coefficient, and when expansion is required, expansion carrier frequencies are added according to the guard band interval to complete the expansion, thereby ensuring the effective implementation of the expansion.

[0099] Furthermore, the steps for frequency reuse according to the first frequency reuse factor include:

[0100] Step h: Detect whether the available frequency corresponding to the cell under test is less than the preset maximum frequency value;

[0101] Step k: If the available frequency is less than the preset maximum frequency, then determine the low service area and high service area in the cell under test, and control the low service area to reuse frequency according to the second frequency reuse coefficient, and the high service area to reuse frequency according to the first frequency reuse coefficient.

[0102] In this embodiment, it is also necessary to detect whether the available frequency of NB-IoT (i.e., the available frequency corresponding to the cell under test) is less than a pre-set maximum frequency value, such as 800kHz. If the available frequency is equal to the pre-set maximum frequency value, frequency reuse is directly performed according to the first frequency reuse coefficient corresponding to the high interference area. However, if the available frequency is less than the pre-set maximum frequency value, it is necessary to first determine the low-service area and high-service area in the cell under test, and control the low-service area to perform frequency reuse according to the pre-set second frequency coefficient, and the high-service area to perform frequency reuse according to the pre-set first frequency reuse coefficient. For example, as shown... Figure 10 As shown, FR3, FR4, FR5, and FR6 are in the high-operation zone, while FR2 is in the low-operation zone.

[0103] In this embodiment, when the available frequency is less than the preset maximum frequency, the low-service area in the cell under test is controlled to reuse the frequency according to the second frequency reuse coefficient, and the high-service area is controlled to reuse the frequency according to the first frequency reuse coefficient, thereby improving the frequency utilization rate.

[0104] In addition, refer to Figure 3 This invention also provides a spectrum sharing device, comprising:

[0105] The high interference area module A10 is used to perform frequency reuse according to the first frequency reuse factor if the cell under test is a high interference area.

[0106] The low-interference area module A10 is used to perform frequency reuse according to a second frequency reuse factor if the cell under test is a low-interference area, wherein the first frequency reuse factor is greater than the second frequency reuse factor.

[0107] Optionally, the spectrum sharing device further includes:

[0108] The acquisition unit is used to acquire the signal-to-interference ratio (SIR) of the signal in the cell under test and to detect whether the SIR is less than a preset value.

[0109] If the signal-to-interference ratio is less than a preset value, then the proportion of the sampling points corresponding to the signal-to-interference ratio is determined, and it is detected whether the proportion is greater than the preset proportion.

[0110] If the ratio value is greater than the preset ratio value, then the cell under test is determined to be a high interference area.

[0111] Optionally, the acquisition unit is also used for:

[0112] If the signal-to-interference ratio is greater than or equal to a preset value, then the cell under test is determined to be a low-interference area;

[0113] If the signal-to-interference ratio (SIR) is less than a preset value, and the proportion of sampling points corresponding to the SIR is less than or equal to a preset proportion value, then the cell under test is determined to be a low-interference area.

[0114] Optionally, the high-interference area module A10 is used for:

[0115] If the cell under test is to be expanded, then the coverage carrier frequency in the first frequency reuse coefficient is determined, and the center frequency point of the coverage carrier frequency is determined.

[0116] The expansion carrier frequency is determined based on the preset guard band interval and the center frequency of the covered carrier frequency, and expansion is performed based on the expansion carrier frequency. The sum of the value corresponding to the center frequency of the expanded carrier frequency and the value corresponding to the guard band interval is equal to the value corresponding to the center frequency of the covered carrier frequency.

[0117] Optionally, the high-interference area module A10 is used for:

[0118] The number of expansion carrier frequencies is determined based on the number of coverage carrier frequencies, and when there are multiple expansion carrier frequencies, it is detected whether there are unusable expansion carrier frequencies among the expansion carrier frequencies.

[0119] If there are no unusable expansion carrier frequencies among the expansion carrier frequencies, the difference between the coverage carrier frequency and the expansion carrier frequency is calculated sequentially. When the difference is greater than or equal to the preset guard band interval, the coverage carrier frequency and the expansion carrier frequency are combined to complete the expansion.

[0120] Optionally, the high-interference area module A10 is used for:

[0121] If there is an unusable expansion carrier frequency among the expansion carrier frequencies, then determine the other expansion carrier frequencies among the expansion carrier frequencies besides the unusable expansion carrier frequencies.

[0122] When the difference between the coverage carrier frequency and the other expansion carrier frequencies is greater than or equal to a preset guard band interval, the coverage carrier frequency and the other expansion carrier frequencies are combined to complete the expansion.

[0123] Optionally, the high-interference area module A10 is used for:

[0124] Detect whether the available frequency corresponding to the cell under test is less than the preset maximum frequency value;

[0125] If the available frequency is less than the preset maximum frequency, then the low service area and high service area in the cell under test are determined, and the low service area is controlled to reuse frequency according to the second frequency reuse coefficient, and the high service area is controlled to reuse frequency according to the first frequency reuse coefficient.

[0126] The steps implemented by each functional module unit of the spectrum sharing device can be referred to in the various embodiments of the spectrum sharing method of the present invention, and will not be repeated here.

[0127] Furthermore, the present invention also provides a spectrum sharing device, the spectrum sharing device comprising: a memory, a processor, and a spectrum sharing program stored in the memory; the processor is used to execute the spectrum sharing program to implement the steps of the above-described embodiments of the spectrum sharing method.

[0128] The present invention also provides a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the steps of the above-described embodiments of the spectrum sharing method.

[0129] The specific implementation of the computer-readable storage medium of the present invention is basically the same as the various embodiments of the spectrum sharing method described above, and will not be repeated here.

[0130] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system 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 system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0131] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0132] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0133] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A spectrum sharing method, characterized in that, The spectrum sharing method is a spectrum sharing method for NB-IoT and 5G NR, including the following steps: Within the maximum frequency bandwidth of NB-IoT after frequency planning, a first frequency reuse factor and a second frequency reuse factor are determined, wherein the maximum frequency bandwidth is 800MHz; wherein the frequency planning meets the following principles: a guard band interval of at least 100kHz is reserved between two frequency points in the same cell; the NB-IoT frequency is 200kHz apart from other system frequencies; If the cell under test is in a high-interference area, then frequency reuse shall be performed according to the first frequency reuse factor; If the cell under test is a low-interference area, then frequency reuse is performed according to the second frequency reuse factor, wherein the first frequency reuse factor is greater than the second frequency reuse factor. The step of frequency reuse according to the first frequency reuse factor is followed by: if the cell under test is to be expanded, then the coverage carrier frequency in the first frequency reuse factor is determined, and the center frequency point of the coverage carrier frequency is determined. The expanded carrier frequency is determined according to the preset guard band interval and the center frequency of the covered carrier frequency, wherein the sum of the value corresponding to the center frequency of the expanded carrier frequency and the value corresponding to the guard band interval is equal to the value corresponding to the center frequency of the covered carrier frequency. The number of expansion carrier frequencies is determined based on the number of coverage carrier frequencies, and when there are multiple expansion carrier frequencies, it is detected whether there are unusable expansion carrier frequencies among the expansion carrier frequencies. If there are no unusable expansion carrier frequencies among the expansion carrier frequencies, the difference between the coverage carrier frequency and the expansion carrier frequency is calculated sequentially. When the difference is greater than or equal to the preset guard band interval, the coverage carrier frequency and the expansion carrier frequency are combined to complete the expansion. If there is an unusable expansion carrier frequency among the expansion carrier frequencies, then other expansion carrier frequencies other than the unusable expansion carrier frequencies are determined; and when the difference between the coverage carrier frequency and the other expansion carrier frequencies is greater than or equal to a preset guard band interval, the coverage carrier frequency and the other expansion carrier frequencies are combined to complete the expansion.

2. The spectrum sharing method as described in claim 1, characterized in that, The method further includes: Collect the signal-to-interference ratio (SIR) of the signal in the cell under test, and detect whether the SIR is less than a preset value; If the signal-to-interference ratio is less than a preset value, then the proportion of the sampling points corresponding to the signal-to-interference ratio is determined, and it is detected whether the proportion is greater than the preset proportion. If the ratio value is greater than the preset ratio value, then the cell under test is determined to be a high interference area.

3. The spectrum sharing method as described in claim 2, characterized in that, After the step of detecting whether the signal-to-interference ratio is less than a preset value, the following steps are included: If the signal-to-interference ratio is greater than or equal to a preset value, then the cell under test is determined to be a low-interference area; If the signal-to-interference ratio (SIR) is less than a preset value, and the proportion of sampling points corresponding to the SIR is less than or equal to a preset proportion value, then the cell under test is determined to be a low-interference area.

4. The spectrum sharing method according to any one of claims 1-3, characterized in that, The step of frequency reuse according to the first frequency reuse factor includes: Detect whether the available frequency corresponding to the cell under test is less than the preset maximum frequency value; If the available frequency is less than the preset maximum frequency, then the low service area and high service area in the cell under test are determined, and the low service area is controlled to reuse frequency according to the second frequency reuse factor, and the high service area is controlled to reuse frequency according to the first frequency reuse factor.

5. A spectrum sharing device, characterized in that, The spectrum sharing device is used to execute the spectrum sharing method as described in claim 1, including: A high-interference area module is used to determine a first frequency reuse factor and a second frequency reuse factor within the maximum frequency bandwidth range of NB-IoT after frequency planning, wherein the maximum frequency bandwidth range is 800MHz; wherein the frequency planning satisfies the following principles: a guard band interval of at least 100kHz is reserved between two frequency points in the same cell; the NB-IoT frequency is spaced 200kHz apart from other system frequencies; if the cell under test is a high-interference area, frequency reuse is performed according to the first frequency reuse factor; wherein, after the step of frequency reuse according to the first frequency reuse factor, the module further includes: if the cell under test is to be expanded, determining the coverage carrier frequency in the first frequency reuse factor and determining the center frequency point of the coverage carrier frequency; determining the expansion carrier frequency according to the preset guard band interval and the center frequency point of the coverage carrier frequency, wherein the value corresponding to the center frequency point of the expansion carrier frequency is... The sum of the values ​​corresponding to the guard band interval is equal to the value corresponding to the center frequency of the covered carrier frequency; the number of expansion carrier frequencies is determined according to the number of covered carrier frequencies, and when there are multiple expansion carrier frequencies, it is detected whether there are unusable expansion carrier frequencies among the expansion carrier frequencies; if there are no unusable expansion carrier frequencies among the expansion carrier frequencies, the difference between the covered carrier frequency and the expansion carrier frequency is calculated sequentially, and when the difference is greater than or equal to the preset guard band interval, the covered carrier frequency and the expansion carrier frequency are combined to complete the expansion; if there are unusable expansion carrier frequencies among the expansion carrier frequencies, other expansion carrier frequencies other than the unusable expansion carrier frequencies are determined; and when the difference between the covered carrier frequency and the other expansion carrier frequencies is greater than or equal to the preset guard band interval, the covered carrier frequency and the other expansion carrier frequencies are combined to complete the expansion; The low-interference area module is used to perform frequency reuse according to a second frequency reuse factor if the cell under test is a low-interference area, wherein the first frequency reuse factor is greater than the second frequency reuse factor.

6. A spectrum sharing device, characterized in that, The spectrum sharing device includes: a memory, a processor, and a spectrum sharing program stored in the memory and executable on the processor, wherein the spectrum sharing program, when executed by the processor, implements the steps of the spectrum sharing method as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a spectrum sharing program, which, when executed by a processor, implements the steps of the spectrum sharing method as described in any one of claims 1 to 4.

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