An Extended Combined Signal Coverage System Based on Wireless Digital Repeaters

Abstract

The present invention discloses an extended combined signal coverage system based on wireless digital repeaters. The present invention relates to the field of signal power regulation technology, and solves the problem that signal interference may occur when multiple repeaters are close to each other, especially when the coverage areas of the repeaters overlap, such interference will reduce the signal quality and cause unstable communication. The present invention effectively solves the signal interference problem through the collaborative work of multiple modules, and significantly improves the communication quality and stability. First, the "considered area determination module" and "target area determination module" in the system allow the system to optimize the coverage of each repeater more targetedly through precise regional analysis and demand assessment. This refined regional division and priority setting ensure that the signal strength is adjusted preferentially in the area with the highest demand, thereby maintaining wide coverage while specifically solving the problem of uneven coverage or weak signal.

Description

Technical Field

[0001] The invention relates to the technical field of signal power regulation, in particular to an extended combined signal coverage system based on a wireless digital repeater. Background Art

[0002] In modern wireless communication systems, wireless digital repeaters (also called relay stations) are widely used to extend signal coverage and improve signal quality. These devices receive signals from base stations and then amplify or forward them to cover areas that are farther away or difficult to reach. Wireless digital repeaters are particularly suitable for urban environments with complex terrain and dense buildings, as well as other areas that are difficult to cover with traditional base stations. In this way, the quality of indoor and outdoor communications can be effectively enhanced to meet the growing demand for mobile communications.

[0003] However, with the rapid development of wireless networks and the increasing user demand, the deployment of repeaters has become increasingly dense. In the process of deploying multiple repeaters, especially in cities or other high-density communication environments, the coverage areas of these repeaters often overlap. In addition, since repeaters are usually set up in areas with dense users, such as commercial centers, large public facilities or transportation hubs, their usage frequency and load are high, which increases the complexity of the system and the requirements for signal management.

[0004] When multiple repeaters are close to each other and their coverage areas overlap, signal interference becomes a prominent problem. This interference is mainly caused by the interaction of co-frequency signals or adjacent frequency signals, especially when the repeaters use the same or similar frequencies. This type of interference can cause a variety of communication quality problems, such as intermittent signals, dropped calls, and reduced data transmission rates. Specifically, when the transmission signal of a repeater is captured and re-amplified by another nearby repeater, the quality of the original signal will be affected, which in turn affects the communication experience of the end user. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an extended combined signal coverage system based on a wireless digital repeater, which solves the problems in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an extended combined signal coverage system based on a wireless digital repeater, comprising:

[0007] The consideration area determination module is used to determine the consideration area. The consideration area is represented by the overlapped coverage areas between the repeaters in the area. All situations causing signal interference belong to this consideration area, that is, the coverage areas of all repeaters also include the overlapping areas.

[0008] The target area determination module is used to divide the considered area into m target areas, divide the priorities according to the different communication demand levels of each target area, and select the target area with the highest communication demand in turn as the target area for preferentially adjusting the signal strength of the repeater;

[0009] The attenuation factor determination module is used to obtain the specific location of the repeater in the target area and mark the location, and at the same time obtain the signal strength of each repeater, and determine its signal attenuation factor through the signal attenuation model, and send the signal attenuation factor to the subsequent signal interference data module;

[0010] A signal interference data module is used to calculate the signal interference data according to the attenuation factor and the distance between the repeaters to determine the total signal interference data;

[0011] The optimization module is used to establish an optimization function that minimizes the total signal interference data and determine the optimal transmission power of each repeater in the target area.

[0012] Preferably, in the target area determination module, determining the target area for preferentially adjusting the signal strength of the repeater station includes the following steps:

[0013] AS1: Divide the entire considered area into m target areas through a preset model;

[0014] AS2: Collect communication-related information in each target area, including population density Kj, commercial activities Bj, and industrial area distribution Dj;

[0015] AS3: Establish a regional identification model. For each target area, a comprehensive score Sj is calculated to represent the overall communication demand of the area, that is, Sj=αKj+βBj+γDj+W;

[0016] Among them, α, β and γ are weight coefficients, and W represents other factors that affect communication requirements;

[0017] AS4: Calculate the comprehensive scores of all target areas, evaluate the communication needs of each target area according to the scores, and prioritize them. Select the area with the highest communication demand as the target area for adjusting the signal strength of the repeater station first.

[0018] Preferably, in the attenuation factor determination module, determining the signal attenuation factor comprises the following steps:

[0019] S1: Determine the total number n of repeaters in the target area, determine the specific location of each repeater i, and mark the specific location as xi, where i=1, 2, ..., n;

[0020] S2: Then obtain the signal strength transmitted by each repeater i, recorded as Pi, wherein the repeater can adjust the signal strength through the controller;

[0021] S3: Set the attenuation function of the transmitted signal during the propagation process to a(d), where d is the transmission distance. The signal attenuation model uses the attenuation function The attenuation factor is determined based on the result of function a(d), that is, the result of function a(d) is used as the signal attenuation factor, where γ is the attenuation coefficient.

[0022] Preferably, in the signal interference data module, determining the total signal interference data comprises the following steps:

[0023] Q1: For any two repeaters i and j, by formula H ij =P j ×a(d ij ), determine the signal interference data H of repeater j to repeater i ij , where d ij It is expressed as the distance between repeater i and repeater j, P j represents the transmission power of repeater j, that is, the power of the interference source, a(d ij ) indicates that the signal is transmitted from repeater j to repeater i at a distance d ij The attenuation factor on .

[0024] Q2: Obtain the sum Htotal of signal interference data between all repeaters, that is, the sum Htotal of signal interference data of each repeater to other repeaters;

[0025] ;

[0026] The specific signal interference data total Htotal is obtained.

[0027] Preferably, in the optimization module, determining the optimal transmission power of each repeater in the target area includes the following steps:

[0028] R1: Determine the data that minimizes the total signal interference by solving the optimal power allocation scheme {P1, P2, ..., Pn};

[0029] R11: Limit the power of the repeaters in the target area, that is, Pmin≦Pi≦Pmax;

[0030] R12: Establish the optimization function:

[0031] ;

[0032] Among them, Pi needs to satisfy the constraint of Pmin≦Pi≦Pmax, and minP1, P2, ..., Pn in the expression represent the configuration of minimizing the transmission power P1, P2, ..., Pn of all repeaters at the same time.

[0033] Preferably, after step R1, the method further includes:

[0034] R2: Determine the optimal transmission power Pi of each repeater by solving the optimization function;

[0035] Preferably, it also includes:

[0036] The repeater power adjustment module is used to adjust the transmission power of each repeater to the corresponding optimal transmission power through the controller according to the optimal transmission power of each repeater in the target area.

[0037] The present invention provides an extended combined signal coverage system based on wireless digital repeater. Compared with the prior art, it has the following beneficial effects:

[0038] (1) The present invention effectively solves the signal interference problem through the collaborative work of its multiple modules, and significantly improves the communication quality and stability. First, the "considered area determination module" and "target area determination module" in the system allow the system to optimize the coverage of each repeater more specifically through precise regional analysis and demand assessment. This refined regional division and priority setting ensures that the signal strength is adjusted first in the area with the highest demand, thereby maintaining wide coverage while specifically solving the problem of uneven coverage or weak signal.

[0039] (2) The present invention uses the "attenuation factor determination module" and the "signal interference data module" to collaborate and accurately calculate the signal attenuation and mutual interference data of each repeater according to the actual geographical location and environmental conditions. Such calculations can more accurately adjust the signal strength and reduce unnecessary signal overlap and interference. In this way, the system can reduce signal conflicts while maintaining efficient communication, thereby improving the reliability and stability of communication.

[0040] (3) The optimization module of the present invention determines the optimal transmission power for each repeater by establishing an optimization function that minimizes the total signal interference data, which not only helps to reduce energy waste but also significantly reduces operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] Figure 1 This is a structural framework diagram of an extended combined signal coverage system based on a wireless digital repeater of the present invention; DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0044] Embodiment 1

[0045] See also Figure 1 , the present invention provides an extended combined signal coverage system based on wireless digital repeaters, including a consideration area determination module, a target area determination module, an attenuation factor determination module, a signal interference data module, an optimization module and a repeater power adjustment module;

[0046] The consideration area determination module is used to determine the consideration area. The consideration area is represented by the overlapped coverage areas between the repeaters in the area. All situations causing signal interference belong to this consideration area, that is, the coverage areas of all repeaters also include the overlapping areas.

[0047] The target area determination module is used to divide the considered area into multiple target areas, divide the priorities according to the different communication demand levels of each target area, and select the target area with the highest communication demand in turn as the target area for priority adjustment of the repeater signal strength;

[0048] Determining the target area for prioritizing repeater signal strength adjustment includes the following steps:

[0049] AS1: Divide the entire considered area into m target areas through a preset model;

[0050] AS2: Collect communication-related information in each target area, including population density Kj, business activities Bj, and industrial area distribution Dj. These data can be used to estimate the communication demand intensity in different areas;

[0051] AS3: Establish a regional identification model. For each target area, a comprehensive score Sj is calculated to represent the overall communication demand of the area, that is, Sj=αKj+βBj+γDj+W;

[0052] Among them, α, β and γ are weight coefficients, which are determined according to the influence of different factors on communication demand. The specific parameters are determined and set by professionals. W represents other factors that affect communication demand.

[0053] AS4: Calculate the comprehensive scores of all target areas, evaluate the communication needs of each target area according to the scores, and prioritize them. Select the area with the highest communication demand as the target area for adjusting the signal strength of the repeater station first.

[0054] The attenuation factor determination module is used to obtain the specific location of the repeater in the target area and mark the location, and at the same time obtain the signal strength of each repeater, and determine its signal attenuation factor through the signal attenuation model, and send the signal attenuation factor to the subsequent signal interference data module;

[0055] Determining the signal attenuation factor includes the following steps:

[0056] S1: Determine the total number n of repeaters in the target area, determine the specific location of each repeater i, and mark the specific location as xi, where i=1, 2, ..., n;

[0057] S2: Then obtain the signal strength transmitted by each repeater i, recorded as Pi, wherein the repeater can adjust the signal strength through the controller;

[0058] S3: Set the attenuation function of the transmitted signal during the propagation process to a(d), where d is the transmission distance. The signal attenuation effect increases with the increase of distance. The signal attenuation model uses the attenuation function The attenuation factor is determined by the result of the function a(d), that is, the result of the function a(d) is used as the signal attenuation factor, where γ is the attenuation coefficient, which is usually between 2 and 4. The actual specific parameters are set by the staff;

[0059] A signal interference data module is used to calculate the signal interference data according to the attenuation factor and the distance between the repeaters to determine the total signal interference data;

[0060] Determining the total signal interference data includes the following steps:

[0061] Q1: For any two repeaters i and j, by formula H ij =P j ×a(d ij ), determine the signal interference data H of repeater j to repeater i ij , where d ij It is expressed as the distance between repeater i and repeater j, P j represents the transmission power of repeater j, that is, the power of the interference source, a(d ij ) indicates that the signal is transmitted from repeater j to repeater i at a distance d ij The attenuation factor on .

[0062] Q2: Obtain the sum Htotal of signal interference data between all repeaters, that is, the sum Htotal of signal interference data of each repeater to other repeaters;

[0063] ;

[0064] Specifically, the following examples are used to illustrate:

[0065] Assuming that there are three repeaters in the target area, named A, B, and C, the total signal interference data can be decomposed into the sum of the interference of each repeater to other repeaters, that is:

[0066] The signal interference data of repeater A to other repeaters is HAB+HAC;

[0067] The signal interference data of repeater B to other repeaters is HBA+HBC;

[0068] The signal interference data of repeater B to other repeaters is HCA+HCB;

[0069] Therefore, the total signal interference data is expressed as: Htotal = (HAB + HAC) + (HBA + HBC) + (HCA + HCB).

[0070] Embodiment 2

[0071] In the specific implementation process of this embodiment, based on the first embodiment and different from the first embodiment, this embodiment obtains the optimal transmission power of each repeater in the target area, including:

[0072] The optimization module is used to establish an optimization function that minimizes the total signal interference data and determine the optimal transmission power of each repeater in the target area, which includes the following steps:

[0073] R1: Determine the data that minimizes the total signal interference by solving the optimal power allocation scheme {P1, P2, ..., Pn};

[0074] R11: Power limits are imposed on the repeaters in the target area, i.e., Pmin≦Pi≦Pmax, so that the transmission power of each repeater must be within a predetermined range. This ensures that the repeater will not exceed its maximum power limit, nor fall below the minimum power requirement, to maintain effective signal transmission;

[0075] R12: Establish the optimization function:

[0076] ;

[0077] Among them, Pi needs to satisfy the constraint of Pmin≦Pi≦Pmax. The minP1, P2, ..., Pn in the expression represent the configuration of minimizing the transmission power P1, P2, ..., Pn of all repeaters at the same time to minimize the total signal interference data;

[0078] It should be noted that the goal is to minimize the sum of signal interference data Htotal, that is, by selecting the most appropriate transmission power P1, P2, ..., Pn, the sum of signal interference data Htotal is as small as possible, reducing the total interference between repeaters and optimizing the communication quality of the entire system;

[0079] R2: Determine the optimal transmission power Pi of each repeater by solving the optimization function;

[0080] It should be noted that the above-mentioned optimization function can be solved by existing mathematical optimization methods, such as linear programming, nonlinear programming, convex optimization, etc., by selecting a suitable method for solving it according to the specific properties of the optimization function (such as the linearity or nonlinearity of the optimization function, the form of the constraints, etc.), which will not be elaborated here.

[0081] Embodiment 3

[0082] In the specific implementation process, this embodiment is based on the first and second embodiments, and the difference from the first and second embodiments is that this embodiment also includes:

[0083] The repeater power adjustment module is used to adjust the transmission power of each repeater to the corresponding optimal transmission power through the controller according to the optimal transmission power of each repeater in the target area.

[0084] Embodiment 4

[0085] The specific implementation process of this embodiment includes all the implementation processes of the above three groups of embodiments.

[0086] Some of the data in the above formulas are dimensionless and numerically calculated. Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0087] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. 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. An extended combined signal coverage system based on wireless digital repeater, characterized in that: include: The considered area determination module is used to determine the considered area. The considered area is represented by the overlapped coverage areas between the repeaters in the area. All situations causing signal interference belong to this considered area, that is, the coverage areas of all repeaters also include the overlapping areas. The target area determination module is used to divide the considered area into m target areas, divide the priorities according to the different communication demand levels of each target area, and select the target area with the highest communication demand in turn as the target area for priority adjustment of the repeater signal strength; The attenuation factor determination module is used to obtain the specific location of the repeater in the target area and mark the location, and at the same time obtain the signal strength of each repeater, and determine its signal attenuation factor through the signal attenuation model, and send the signal attenuation factor to the subsequent signal interference data module; A signal interference data module is used to calculate the signal interference data according to the attenuation factor and the distance between the repeaters to determine the total signal interference data; The optimization module is used to establish an optimization function that minimizes the total signal interference data and determines the optimal transmission power of each repeater in the target area; In the target area determination module, the priority division method includes the following steps: AS1: Divide the entire considered area into m target areas through a preset model; AS2: Collect communication-related information in each target area, including population density Kj, commercial activities Bj, and industrial area distribution Dj; AS3: Establish a regional identification model. For each target area, a comprehensive score Sj is calculated to represent the overall communication demand of the area, that is, Sj=αKj+βBj+γDj+W; Among them, α, β and γ are weight coefficients, and W represents other factors that affect communication requirements; AS4: Calculate the comprehensive scores of all target areas, evaluate the communication needs of each target area according to the scores, and prioritize them. Select the area with the highest communication demand as the target area for adjusting the signal strength of the repeater station first.

2. The extended combined signal coverage system based on wireless digital repeater according to claim 1, characterized in that: In the attenuation factor determination module, determining the signal attenuation factor includes the following steps: S1: Determine the total number n of repeaters in the target area, determine the specific location of each repeater i, and mark the specific location as xi, where i=1, 2, ..., n; S2: Then obtain the signal strength transmitted by each repeater i, recorded as Pi, wherein the repeater can adjust the signal strength through the controller; S3: Set the attenuation function of the transmitted signal during the propagation process to a(d), where d is the transmission distance. The signal attenuation model uses the attenuation function The attenuation factor is determined based on the result of function a(d), that is, the result of function a(d) is used as the signal attenuation factor, where γ is the attenuation coefficient.

3. The extended combined signal coverage system based on wireless digital repeater according to claim 2, characterized in that: In the signal interference data module, determining the total signal interference data includes the following steps: Q1: For any two repeaters i and j, by formula H ij =P j ×a(d ij ), determine the signal interference data H of repeater j to repeater i ij , where d ij It is expressed as the distance between repeater i and repeater j, P j represents the transmission power of repeater j, that is, the power of the interference source, a(d ij ) indicates that the signal is transmitted from repeater j to repeater i at a distance d ij The attenuation factor on Q2: Obtain the sum Htotal of signal interference data between all repeaters, that is, the sum Htotal of signal interference data of each repeater to other repeaters; ； The specific signal interference data total Htotal is obtained.

4. The extended combined signal coverage system based on wireless digital repeater according to claim 3, characterized in that: In the optimization module, the optimal transmission power of each repeater in the target area is determined The following steps are involved: R1: Determine the data that minimizes the total signal interference by solving the optimal power allocation scheme {P1, P2, ..., Pn}; R11: Limit the power of the repeaters in the target area, that is, Pmin≦Pi≦Pmax; R12: Establish the optimization function: ； Among them, Pi needs to satisfy the constraint of Pmin≦Pi≦Pmax, and minP1, P2, ..., Pn in the expression represent the configuration of minimizing the transmission power P1, P2, ..., Pn of all repeaters at the same time.

5. The extended combined signal coverage system based on wireless digital repeater according to claim 4, characterized in that: After step R1, the method further includes: R2: Determine the optimal transmission power Pi of each repeater by solving the optimization function.

6. The extended combined signal coverage system based on wireless digital repeater according to claim 4, characterized in that: Also includes: The repeater power adjustment module is used to adjust the transmission power of each repeater to the corresponding optimal transmission power through the controller according to the optimal transmission power of each repeater in the target area.

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