Method for realizing intelligent gain adjustment of 4G signal and 5G signal of wireless repeater

Abstract

The invention discloses a method for realizing intelligent gain adjustment of a 4G signal and a 5G signal of a wireless repeater, relates to the technical field of wireless network equipment, and solves the technical problems that the gain cannot be dynamically and intelligently optimized according to an actual signal environment, and the network coverage effect and the user experience are influenced. Based on base station configuration and link environment parameters, reasonable gains are accurately calculated, so that gain adjustment better meets actual signal requirements, weak coverage and complex scenes are distinguished, differentiated step lengths are set, different scene signal characteristics are adapted, gain adjustment effectiveness is improved, a'adjustment-monitoring-analysis-iteration 'complete closed loop is constructed, and signal quality is monitored after adjustment. In case of abnormality, a comprehensive analysis signal is generated and optimized and adjusted again, and through mechanisms such as mean value comparison and step length adaptation, the optimal gain adjustment effect is ensured, the network is prevented from being influenced by abnormal adjustment, and the adaptability of the repeater to a complex environment and the network coverage stability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless network equipment, and specifically to a method for intelligently adjusting the gains of 4G and 5G signals of a wireless repeater. Background Art

[0002] A repeater (RP repeater) is a device that connects network lines and is used for bidirectional forwarding of physical signals between two network nodes. Accurately adjusting the repeater gain is crucial to ensuring signal quality and avoiding interference.

[0003] According to the patent application with publication number CN111313952A, a method, device, repeater and storage medium for intelligent adjustment of repeater gain are disclosed. The method includes: obtaining an input signal and identifying the signal type of the input signal, where the input signal is an uplink signal or a downlink signal; if the input signal is a narrowband Internet of Things (NB-IoT) signal or a long-term evolution (LTE) signal, detecting the peak power of the input signal; and adjusting the signal amplification gain of the branch corresponding to the input signal according to the peak power.

[0004] However, it is difficult to accurately derive reasonable gain based on actual signal strength, link loss and other parameters using traditional methods. This can easily lead to interference caused by excessive gain or poor coverage caused by insufficient gain. Traditional repeater gain adjustment relies heavily on manual experience, resulting in inaccurate adjustment, slow response, and difficulty adapting to complex scenarios. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a method for intelligently adjusting the gain of 4G and 5G signals of wireless repeaters, which solves the problem that the gain cannot be dynamically and intelligently optimized according to the actual signal environment, affecting the network coverage effect and user experience.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for intelligently adjusting the gain of 4G and 5G signals of a wireless repeater, the method specifically comprising the following steps: Calculate the full-load power of the input port based on the downlink RSRP level of the receiving port. Calculate the difference between the rated output power and the full-load power of the input port to obtain a reasonable gain. Calculate the difference between the reasonable gain and the original gain to obtain the gain difference, and compare it with the gain threshold to generate a secondary gain adjustment signal. At the same time, determine whether the gain difference is positive or negative and generate an increase or decrease gain signal. Analyze the gain adjustment signal, calculate the new uplink and downlink gain adjustment according to the determined step size, analyze the signal quality level and signal-to-interference-to-noise ratio changes, and generate gain adjustment information or comprehensive analysis adjustment signal; The comprehensive analysis adjustment signal is processed and adjusted again based on the original step length to obtain the secondary adjustment gain. The level value and signal-to-noise ratio changes of the adjusted signal quality are analyzed to generate the step length adjustment analysis signal. The step length adjustment analysis signal is processed, the original step length is adjusted to obtain the step length to be analyzed, and the comprehensive adjustment gain is obtained based on it. The change in its signal quality and the secondary adjustment gain signal quality is judged, and the adjustment gain with the best change is selected as the standard to generate gain adjustment information.

[0007] As a further solution of the present invention, the specific method of obtaining a reasonable gain is: According to the formula , calculate the RSRP level value, where P ref-signal is the total power of the reference signal, B RB is the number of RBs corresponding to the system bandwidth, and according to the formula Calculate the full load power P at the input port total , N RE The number of REs occupied by the reference signal in each RB, N port is the number of base station transmitting antenna ports, L loss is the link loss compensation item; According to the formula Calculate the reasonable gain G target , where P 额定输出 Indicates the maximum downlink power that the repeater hardware design can stably output.

[0008] As a further solution of the present invention, the specific method of generating the gain-up or gain-down signal is: Calculate the gain difference according to the formula: gain difference = reasonable gain - original gain and compare it with the gain threshold. If the gain difference is greater than the gain threshold, a secondary gain adjustment signal is generated, otherwise a gain adjustment signal is generated. The secondary gain adjustment signal is analyzed. If the gain value is greater than 0, an upward gain adjustment signal is generated. Conversely, if the gain value is less than 0, a downward gain adjustment signal is generated.

[0009] As a further solution of the present invention, the specific method of analyzing the gain-up or gain-down signal is: Set the step size based on the current scene, and then use formula G 上新 =G 上原 +sign( ) × step length × 0.8, and calculate the new uplink adjustment gain G 上新 ,in is the gain difference, G 上原 It is represented as the original uplink adjustment gain, sign is the sign function; According to formula G 下新 =G 下原 + step size, calculate the new downlink adjustment gain G 下新 , and then monitor the signal quality after gain adjustment.

[0010] As a further solution of the present invention, the specific method of monitoring the signal quality after gain adjustment is: The level value and signal-to-interference-noise ratio corresponding to the adjusted signal are obtained, and their changes are judged respectively, and the changes are specifically expressed as getting better or worse. If the changes of both are normal, and normal means that the changes are getting better, then it means that the current adjustment gain is effectively adjusted, and the gain adjustment information is generated based on the current adjustment gain. Conversely, if any one of the two changes is abnormal, and the abnormality is expressed as any one of the changes getting worse, then it means that the current adjustment gain is abnormal, and a comprehensive analysis adjustment signal is generated.

[0011] As a further solution of the present invention, the specific method of processing the comprehensive analysis adjustment signal is: The new uplink adjustment gain is used as the standard for re-adjustment, and the corresponding uplink and downlink gains after re-adjustment are obtained and recorded as secondary adjustment gains. At the same time, the signal quality after the secondary adjustment gain is monitored. If the signal quality changes after the secondary adjustment gain are normal, the corresponding gain adjustment information is generated based on the secondary adjustment gain. On the contrary, if the signal quality is abnormal after the secondary adjustment gain, a step adjustment analysis signal is generated.

[0012] As a further solution of the present invention, the specific method of processing the step size adjustment analysis signal is: Obtain the step length corresponding to the current scenario as the original step length, and determine whether the original step length can be reduced. If so, decrement the original step length by units to obtain the step length to be analyzed. Otherwise, increase the original step length by units to obtain the step length to be analyzed. Then, calculate the corresponding uplink gain and downlink gain based on the step length to be analyzed, and record them as the comprehensive adjustment gain. At the same time, monitor the signal quality corresponding to the comprehensive adjustment gain. If the signal quality is normal, the gain adjustment information is generated based on the comprehensive adjustment gain. Otherwise, if the signal quality is abnormal, the relationship between the comprehensive adjustment gain and the secondary adjustment gain corresponding to the signal quality is compared, and the adjustment information is generated through analysis.

[0013] As a further solution of the present invention, the specific method of comparing the relationship between the comprehensive adjustment gain and the secondary adjustment gain corresponding to the signal quality and analyzing and generating the adjustment information is: Obtain the level values ​​and signal-to-interference-and-noise ratios corresponding to the secondary adjustment gain and the comprehensive adjustment gain, respectively. Calculate the differences between the respective level values ​​and signal-to-interference-and-noise ratios and the original level values ​​and signal-to-interference-and-noise ratios, and record them as comparison differences. Calculate the mean of the comparison differences and compare the obtained means. If the former mean is greater than the latter mean, generate adjustment gain information based on the comprehensive adjustment gain. Conversely, if the former mean is less than the latter mean, generate adjustment gain information based on the secondary adjustment gain.

[0014] The present invention provides a method for intelligently adjusting the gain of 4G and 5G signals in wireless repeaters. Compared with the existing technology, it has the following advantages: The present invention collects basic information such as RSRP, combines base station configuration and link environment parameters, and accurately calculates reasonable gain to solve the blindness of traditional manual experience adjustment, so that gain adjustment is more in line with actual signal requirements, distinguishes weak coverage and complex scenarios, sets differentiated step sizes, adapts to signal characteristics of different scenarios, improves the effectiveness of gain adjustment, ensures coverage quality in various scenarios, and constructs a complete closed loop of "adjustment-monitoring-analysis-iteration". After adjustment, signal quality is monitored, and a comprehensive analysis signal is generated and optimized again in the event of an abnormality. It can also ensure the optimal gain adjustment effect through mechanisms such as mean comparison and step size adaptation, avoid abnormal adjustment affecting the network, and improve the adaptability of the repeater to complex environments and the stability of network coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a diagram of the steps of the present invention. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1 The present application provides a method for intelligently adjusting the gain of 4G and 5G signals of a wireless repeater, which specifically includes the following steps: Step S1: Collect basic information of the wireless repeater, and the basic information here specifically refers to the downlink RSRP level value of the receiving port, and the calculation formula of the RSRP level value here is, , where P ref-signal is the total power of the reference signal, B RB is the number of RBs corresponding to the system bandwidth, and the full load power of the input port is calculated based on the basic information obtained. The specific formula is: , where NRE The number of REs occupied by the reference signal in each RB, N port is the number of base station transmitting antenna ports, L loss is the link loss compensation term, and then according to the formula Calculate the reasonable gain G target , where P 额定输出 Indicates the maximum downlink power that the repeater hardware can stably output (e.g., 20W corresponds to 43dBm, which is the upper limit of the device performance).

[0018] For example, in a poor coverage scenario in an urban village, the following parameters are known: Base station configuration: LTE 20MHz bandwidth (B RB =100), the total power of the reference signal P ref-signal 40W = 46dBm, there are 2 antenna ports (N port =2); Repeater parameters: Rated output power P 额定输出 =20W=43dBm; Link environment: Feeder length 50 meters (loss L loss =2dB), each RB reference signal occupies 6 REs (N RE =6); Further, according to the above parameters, substitute into the formula =-15.76dBm, and according to the formula The calculated full load power of the input port is -2.97dBm. Calculate the reasonable gain G target It is 43-(-2.97)=45.97dBm.

[0019] Step S2: Calculate the difference between the reasonable gain and the original gain according to the formula: Gain difference = reasonable gain - original gain ( =G target -G old ), and compare the gain difference with the gain threshold, and the specific value of the gain threshold is set by the operator. If the gain difference is greater than the gain threshold, it means that the current gain difference does not meet the gain threshold, and a secondary gain adjustment signal is generated. Conversely, if the gain difference is less than the gain threshold, it means that the current gain difference meets the gain threshold, and gain adjustment information is generated; The generated secondary gain adjustment signal is analyzed to obtain the gain difference and determine its value. If the gain value is greater than 0, it indicates that the current gain is insufficient and needs to be increased. At the same time, an increase gain signal is generated. Conversely, if the gain value is less than 0, it indicates that the current gain is too high and is prone to interference. The gain needs to be decreased and a decrease gain signal is generated.

[0020] For the weak coverage scenario in urban villages, the following parameters are obtained: Reasonable gain G target 46dBm; Original gain G old 35dBm (current configuration); The operator sets the gain threshold Th = 5 dBm; According to the formula =G target -G old Calculated =46-35=11 dBm, and >Th=5dBm, so the secondary adjustment is triggered, because >0, indicating that the gain is insufficient and needs to be adjusted upward; Step S3: Analyze the generated gain-up or gain-down signal. Take the gain-up signal as an example and set the step size based on the current scenario. Specifically, for weak coverage scenarios (such as rural areas and tunnels), the corresponding step size is set to 3dB. For complex scenarios (such as urban areas and high-speed railways), the step size is set to 1dB. Then, according to formula G 上新 =G 上原 +sign( ) × step length × 0.8. If the analysis is performed on the gain-down signal, the corresponding formula is G 上新 =G 上原 -sign ) × step size × 0.8, where is the gain difference, G 上原 It is represented as the original uplink adjustment gain, sign is the sign function, and the new uplink adjustment gain G is calculated. 上新 , and according to formula G 下新 =G 下原 + step size, calculate the new downlink adjustment gain G 下新 , then monitor the signal quality after gain adjustment; Obtain the level value and signal-to-interference-noise ratio corresponding to the adjusted signal, and judge their changes respectively. The change here is specifically expressed as getting better or worse, and the improvement here includes the situation where there is no impact. If both changes are normal, and normal here means that the changes are getting better, then it means that the current adjustment gain is effectively adjusted, and gain adjustment information is generated based on the current adjustment gain. Conversely, if any one of the two changes is abnormal, and the abnormality here means that any one of the changes is getting worse, then it means that the current adjustment gain is abnormal, and a comprehensive analysis adjustment signal is generated.

[0021] Step S4: Analyze the generated comprehensive analysis adjustment signal, and adjust it again based on the new uplink adjustment gain. The step size of the re-adjustment is still the original step size. For example, the original step size in the urban scene is 1dB. After the secondary adjustment, the downlink gain is 74→73dB (reduced by 1dB), and the uplink gain is 69→68dB (reduced by 1dB). First try to reduce the step size (for example, 1dB→0dB is unrealistic, and the actual minimum step size is 0.5dB) to prevent over-adjustment. Obtain the corresponding uplink and downlink gains after re-adjustment and record them as secondary adjustment gains. At the same time, monitor the signal quality after the secondary adjustment gain. If the signal quality changes after the secondary adjustment gain are normal, generate the corresponding gain adjustment information based on the secondary adjustment gain. Conversely, if the signal quality is abnormal after the secondary adjustment gain, generate a step size adjustment analysis signal. For example, the original step size is 1dB, the downlink gain is 74dB and the uplink gain is 69dB before the secondary adjustment → after the secondary adjustment Downlink gain: 74dB-1dB=73dB (downgraded according to the original step size) Uplink gain: 69dB-1dB=68dB (downgraded according to the original step size); The generated step size adjustment analysis signal is processed to obtain the step size corresponding to the current scenario as the original step size, and determine whether the original step size can be reduced. Here, whether it can be reduced is represented by a decrease in units of 1dBm. If the step size reduction is invalid, try to increase the step size (such as 1dB→2dB) to break through the original strategy limit. If it can be reduced, the original step size is decreased by units to obtain the step size to be analyzed. Conversely, if it cannot be reduced, the original step size is increased by units to obtain the step size to be analyzed. The unit increase here is represented by increasing the step size by 1dBm. For example, if the original step size is 1dBm, the step size obtained after the unit increase is 2dBm. Then, the corresponding uplink gain and downlink gain are calculated according to the step size to be analyzed, and recorded as the comprehensive adjustment gain. At the same time, the signal quality corresponding to the comprehensive adjustment gain is monitored. If the signal quality is normal, the gain adjustment information is generated based on the comprehensive adjustment gain. If the signal quality is abnormal, the relationship between the comprehensive adjustment gain and the secondary adjustment gain corresponding to the signal quality is compared. The specific comparison method is as follows: The level values ​​and signal-to-interference-and-noise ratios corresponding to the secondary adjustment gain and the comprehensive adjustment gain are obtained, respectively. The differences between the respective level values ​​and signal-to-interference-and-noise ratios and the original level values ​​and signal-to-interference-and-noise ratios are calculated and recorded as comparison differences. The mean of the comparison differences is calculated and the obtained means are compared. If the former mean is greater than the latter mean, the comprehensive adjustment gain is used as the standard to generate adjustment gain information. Conversely, if the former mean is less than the latter mean, the secondary adjustment gain is used as the standard to generate adjustment gain information. In the case where the two means are the same, the maximum change value corresponding to the improved situation is used as the standard for adjustment. For example, the secondary adjustment mean is: (+0dBRSRP++3dBSINR) / 2=1.5dB, and the comprehensive adjustment mean is: (+1dBRSRP++2dBSINR) / 2=1.5dB. Therefore, the secondary adjustment gain is selected as the standard for adjustment.

[0022] Some of the data in the above formulas are calculated based on their numerical values ​​and are not substituted into parameter units for calculation. At the same time, the contents not described in detail in this specification belong to the existing technology known to those skilled in the art.

[0023] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A method for intelligently adjusting the gain of 4G and 5G signals of a wireless repeater, characterized in that: The method specifically comprises the following steps: Calculate the full-load power of the input port based on the downlink RSRP level of the receiving port. Calculate the difference between the rated output power and the full-load power of the input port to obtain a reasonable gain. Calculate the difference between the reasonable gain and the original gain to obtain the gain difference, and compare it with the gain threshold to generate a secondary gain adjustment signal. At the same time, determine whether the gain difference is positive or negative and generate an increase or decrease gain signal. Analyze the gain adjustment signal, calculate the new uplink and downlink gain adjustment according to the determined step size, analyze the signal quality level and signal-to-interference-to-noise ratio changes, and generate gain adjustment information or comprehensive analysis adjustment signal; The comprehensive analysis adjustment signal is processed and adjusted again based on the original step length to obtain the secondary adjustment gain. The level value and signal-to-noise ratio changes of the adjusted signal quality are analyzed to generate the step length adjustment analysis signal. The step length adjustment analysis signal is processed, the original step length is adjusted to obtain the step length to be analyzed, and the comprehensive adjustment gain is obtained based on it. The change in its signal quality and the secondary adjustment gain signal quality is judged, and the adjustment gain with the best change is selected as the standard to generate gain adjustment information.

2. The method for realizing intelligent adjustment of 4G signal and 5G signal gain of wireless repeater according to claim 1, characterized in that: The specific method of obtaining reasonable gain is: According to the formula , calculate the RSRP level value, where P ref-signal is the total power of the reference signal, B RB is the number of RBs corresponding to the system bandwidth, and according to the formula Calculate the full load power P at the input port total , N RE The number of REs occupied by the reference signal in each RB, N port is the number of base station transmitting antenna ports, L loss is the link loss compensation item; According to the formula Calculate the reasonable gain G target , where P 额定输出 Indicates the maximum downlink power that the repeater hardware design can stably output.

3. The method for realizing intelligent adjustment of 4G signal and 5G signal gain of wireless repeater according to claim 1, characterized in that: The specific method of generating the gain-up or gain-down signal is as follows: Calculate the gain difference according to the formula: gain difference = reasonable gain - original gain and compare it with the gain threshold. If the gain difference is greater than the gain threshold, a secondary gain adjustment signal is generated, otherwise a gain adjustment signal is generated. The secondary gain adjustment signal is analyzed. If the gain value is greater than 0, an upward gain adjustment signal is generated. Conversely, if the gain value is less than 0, a downward gain adjustment signal is generated.

4. The method for realizing intelligent adjustment of 4G signal and 5G signal gain of wireless repeater according to claim 1, characterized in that: The specific method of analyzing the gain-up or gain-down signal is as follows: Set the step size based on the current scene, and then use formula G 上新 =G 上原 +sign( ) × step length × 0.8, and calculate the new uplink adjustment gain G 上新 ,in is the gain difference, G 上原 It is represented as the original uplink adjustment gain, sign is the sign function; According to formula G 下新 =G 下原 + step size, calculate the new downlink adjustment gain G 下新 , and then monitor the signal quality after gain adjustment.

5. The method for realizing intelligent adjustment of 4G signal and 5G signal gain of wireless repeater according to claim 4, characterized in that: The specific method of monitoring the signal quality after gain adjustment is: The level value and signal-to-interference-noise ratio corresponding to the adjusted signal are obtained, and their changes are judged respectively, and the changes are specifically expressed as getting better or worse. If the changes of both are normal, and normal means that the changes are getting better, then it means that the current adjustment gain is effectively adjusted, and the gain adjustment information is generated based on the current adjustment gain. On the contrary, if any one of the two changes is abnormal, and the abnormality is expressed as any one of the changes getting worse, then it means that the current adjustment gain is abnormal, and a comprehensive analysis adjustment signal is generated.

6. The method for realizing intelligent adjustment of 4G signal and 5G signal gain of wireless repeater according to claim 1, characterized in that: The specific method of processing the comprehensive analysis and adjustment signal is as follows: The new uplink adjustment gain is used as the standard for re-adjustment, and the corresponding uplink and downlink gains after re-adjustment are obtained and recorded as secondary adjustment gains. At the same time, the signal quality after the secondary adjustment gain is monitored. If the signal quality changes after the secondary adjustment gain are normal, the corresponding gain adjustment information is generated based on the secondary adjustment gain. On the contrary, if the signal quality is abnormal after the secondary adjustment gain, a step adjustment analysis signal is generated.

7. The method for realizing intelligent adjustment of 4G signal and 5G signal gain of wireless repeater according to claim 1, characterized in that: The specific method of processing the step length adjustment analysis signal is as follows: Obtain the step length corresponding to the current scenario as the original step length, and determine whether the original step length can be reduced. If so, decrement the original step length by units to obtain the step length to be analyzed. Otherwise, increase the original step length by units to obtain the step length to be analyzed. Then, calculate the corresponding uplink gain and downlink gain based on the step length to be analyzed, and record them as the comprehensive adjustment gain. At the same time, monitor the signal quality corresponding to the comprehensive adjustment gain. If the signal quality is normal, the gain adjustment information is generated based on the comprehensive adjustment gain. Otherwise, if the signal quality is abnormal, the relationship between the comprehensive adjustment gain and the secondary adjustment gain corresponding to the signal quality is compared, and the adjustment information is generated through analysis.

8. The method for realizing intelligent adjustment of 4G signal and 5G signal gain of wireless repeater according to claim 7, characterized in that: The specific method of comparing the relationship between the comprehensive adjustment gain and the secondary adjustment gain corresponding to the signal quality and analyzing and generating the adjustment information is: Obtain the level values ​​and signal-to-interference-and-noise ratios corresponding to the secondary adjustment gain and the comprehensive adjustment gain, respectively. Calculate the differences between the respective level values ​​and signal-to-interference-and-noise ratios and the original level values ​​and signal-to-interference-and-noise ratios, and record them as comparison differences. Calculate the mean of the comparison differences and compare the obtained means. If the former mean is greater than the latter mean, generate adjustment gain information based on the comprehensive adjustment gain. Conversely, if the former mean is less than the latter mean, generate adjustment gain information based on the secondary adjustment gain.

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