CN114245393B - Wireless distributed signal coverage system - Google Patents
Wireless distributed signal coverage system Download PDFInfo
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- CN114245393B CN114245393B CN202111574417.5A CN202111574417A CN114245393B CN 114245393 B CN114245393 B CN 114245393B CN 202111574417 A CN202111574417 A CN 202111574417A CN 114245393 B CN114245393 B CN 114245393B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a wireless distributed signal coverage system, which comprises: a base station unit, a plurality of extension units, and a plurality of remote units on a branch; the base station unit is in signal connection with the extension units, and each extension unit is in signal connection with a remote unit on one or more branches; the base station unit is used for converting radio frequency signals generated by cells provided by multiple modes into digital signals; the expansion unit is used for converting the digital signals into radio frequency signals and transmitting the radio frequency signals corresponding to the cells configured by each branch to the remote unit on each branch; the remote unit is configured to radiate the radio frequency signal into free space. The invention can support cells provided by multiple modes, realize the differentiated coverage of different scenes and is applicable to the requirements of different coverage areas.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a wireless distributed signal coverage system.
Background
With the development of mobile communication technology, the distributed coverage system is widely applied to various indoor scenes, and becomes an important means for wireless signal coverage.
Conventional distributed signal coverage systems employ either radio frequency feed-in or baseband feed-in modes. The radio frequency feed-in mode is to introduce radio frequency signals of the base station through a wireless or wired scheme, and the distributed coverage system of the mode cannot provide capacity, so that the radio frequency feed-in mode is generally applied to indoor scenes with low added values. The baseband feed-in mode realizes the complete function of the base station, can provide capacity and is generally applied to indoor scenes with high added value.
The traditional wireless distributed signal coverage system has single information source, and the wireless access capability provided in the whole coverage area is completely the same, so that the system cannot adapt to the requirements of different coverage areas.
Disclosure of Invention
The invention provides a wireless distributed signal coverage system, which is used for solving the defect that the wireless distributed signal coverage system in the prior art has single information source and cannot be suitable for different coverage area requirements, and realizing the differentiated coverage of different scenes.
The invention provides a wireless distributed signal coverage system, which comprises a base station unit, a plurality of extension units and a plurality of remote units on a branch;
the base station unit is in signal connection with the extension units, and each extension unit is in signal connection with a remote unit on one or more branches;
the base station unit is used for providing digital signals supporting cells with various standards and converting radio frequency signals containing the cells with various standards into digital signals;
the expansion unit is used for converting the digital signals into radio frequency signals and transmitting the radio frequency signals corresponding to the cells configured by each branch to the remote unit on each branch;
the remote unit is configured to radiate the radio frequency signal into free space.
According to the wireless distributed signal coverage system provided by the invention, the base station unit comprises a baseband feed-in module, a radio frequency feed-in module, a first main control module and a first power supply module;
the baseband feed-in module and the radio frequency feed-in module are respectively connected with the first main control module through signals;
the baseband feed-in module establishes a cell and transmits a digital signal corresponding to the cell to the first main control module;
the radio frequency feed-in module is used for converting radio frequency signals of cells with various systems in space into digital signals and transmitting the digital signals to the first main control module;
the first main control module is used for transmitting the digital signals transmitted by the baseband feed-in module and the radio frequency feed-in module to the expansion unit after re-framing;
the first power supply module is used for supplying power to the baseband feed-in module, the radio frequency feed-in module and the first main control module.
According to the wireless distributed signal coverage system provided by the invention, the expansion unit comprises a second power supply module, a second main control module and a first radio frequency module;
the second main control module is in signal connection with the first radio frequency module;
the second main control module is used for carrying out frame decomposition on the digital signals, and sending the digital signals corresponding to the cells after frame decomposition to the first radio frequency module corresponding to each branch according to the cells configured by the branches connected with the expansion unit; wherein the branches are in one-to-one correspondence with the first radio frequency modules;
the first radio frequency module is used for converting the digital signal into a radio frequency signal, amplifying and filtering the radio frequency signal and transmitting the radio frequency signal to a remote unit on a branch corresponding to the first radio frequency module;
the second power module is used for supplying power to the second main control module and the first radio frequency module.
According to a wireless distributed signal coverage system provided by the present invention,
a chain cascade between the remote units on each leg;
each remote unit comprises a coupler, a second radio frequency module, an antenna module and a third power module;
the coupler is in signal connection with the second radio frequency module, and the second radio frequency module is in signal connection with the antenna module;
the first radio frequency module is used for amplifying and filtering the radio frequency signals and then transmitting the radio frequency signals to a remote unit at one end of a branch corresponding to the first radio frequency module;
the coupler in each remote unit is used for coupling part of the radio frequency signals to the second radio frequency module and transmitting uncoupled radio frequency signals to the next remote unit of each remote unit;
the second radio frequency module in each remote unit is used for amplifying and filtering the radio frequency signals and then transmitting the radio frequency signals to the antenna module;
the antenna module is used for radiating the radio frequency signals to free space;
the third power module is used for supplying power to the second radio frequency module and the coupler.
According to the wireless distributed signal coverage system provided by the invention, the extension units are connected in a chain type manner;
the first main control module is used for transmitting the digital signals transmitted by the baseband feed-in module and the radio frequency feed-in module to the expansion unit at one end after re-framing;
each extension unit is further adapted to transmit the digital signal to a next extension unit of each extension unit.
According to the wireless distributed signal coverage system provided by the invention, the baseband feed-in module is further used for analyzing uplink received data, obtaining the terminal load rate of each branch corresponding to the cell established by the baseband feed-in module, and sending the terminal load rate to the first main control module;
the first main control module is used for carrying out cell switching on the branch corresponding to the cell established by the baseband feed-in module according to the terminal load rate of each branch and a preset threshold.
According to the wireless distributed signal coverage system provided by the invention, the preset threshold comprises a preset overload threshold and a preset no-load threshold.
According to the wireless distributed signal coverage system provided by the invention, the first main control module is used for adding the terminal load rates of all branches corresponding to the cell established by the baseband feed-in module;
if the addition result is larger than the preset overload threshold, switching a branch corresponding to the cell established by the baseband feed-in module to the cell provided by the radio frequency feed-in module;
and if the addition result is smaller than the preset no-load threshold, switching a branch corresponding to the cell provided by the radio frequency feed-in module to the cell established by the baseband feed-in module.
According to the wireless distributed signal coverage system provided by the invention, the baseband feed-in module is used for analyzing uplink received data, acquiring the terminal load rate and the user access number of each branch corresponding to a cell established by the baseband feed-in module, and transmitting the terminal load rate and the user access number to the first main control module;
the first main control module is configured to, if the addition result is greater than the preset overload threshold, perform weighted addition on the terminal load rate, the user access number and the coverage area criticality of each branch corresponding to the cell established by the baseband feed-in module, and switch the branch with the lowest weighted addition result to the cell provided by the radio frequency feed-in module;
and if the addition result is smaller than the preset no-load threshold, carrying out weighted addition on the terminal load rate, the user access number and the coverage area criticality of each branch corresponding to the cell provided by the radio frequency feed-in module, and switching the branch with the highest weighted addition result to the cell established by the baseband feed-in module.
According to the wireless distributed signal coverage system provided by the invention, the standard of the baseband feed-in module is the same as the standard of the terminal corresponding to the terminal load rate and the user access number.
The wireless distributed signal coverage system provided by the invention is used for providing the digital signals supporting the cells with multiple modes through the base station unit and converting the radio frequency signals containing the cells with multiple modes into the digital signals, the expansion unit converts the digital signals into the radio frequency signals, the radio frequency signals are distributed to the remote units of different branches according to the cells configured by each branch, and the remote units radiate the radio frequency signals to free space, so that the cells provided by multiple modes can be supported, the differential coverage of different scenes is realized, and the requirements of different coverage areas are met.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a wireless distributed signal coverage system provided by the present invention;
fig. 2 is a schematic structural diagram of a base station unit in the wireless distributed signal coverage system provided by the present invention;
fig. 3 is a schematic structural diagram of an expansion unit in the wireless distributed signal coverage system provided by the present invention;
fig. 4 is a schematic structural diagram of a remote unit in a wireless distributed signal coverage system according to the present invention;
fig. 5 is a schematic flow chart of a wireless signal coverage integrating baseband and radio frequency feed in a wireless distributed signal coverage system provided by the invention;
fig. 6 is a schematic flow chart of adaptive cell configuration in the wireless distributed signal coverage system provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A wireless distributed signal coverage system of the present invention is described below in conjunction with fig. 1, comprising: a base station unit, a plurality of extension units, and a plurality of remote units on a branch;
the base station unit is in signal connection with the extension units, and each extension unit is in signal connection with a remote unit on one or more branches;
fig. 1 includes two extension units and 4 branches, with a chain-type cascade between extension units, and a chain-type cascade between remote units in each branch. The base station unit is connected to only one extension unit. The present embodiment is not limited to the number of extension units and the connection type between extension units, and the number of branches and the connection type between remote units in each branch. The base station unit may be connected to one extension unit or to all extension units.
The connection relation is that the base station unit is connected with the extension unit through optical fibers, and the extension unit is connected with the remote unit through radio-frequency cables.
The base station unit is used for providing digital signals supporting cells with various standards and converting radio frequency signals containing the cells with various standards into digital signals;
the base station unit provides multimode radio access cell services, having converted multimode radio frequency signals in the radio space to digital signals. The present embodiment is not limited to the mode of providing a cell.
The expansion unit is used for converting the digital signals into radio frequency signals and transmitting the radio frequency signals corresponding to the cells configured by each branch to the remote unit on each branch;
the expansion unit is used for realizing photoelectric conversion of the digital signal and signal distribution. The digital signals sent by the base station units are converted into radio frequency signals and forwarded to the remote units on the corresponding branches according to the cell configuration of each branch.
Optionally, the cell configuration of each leg supports both a fixed mode and an adaptive mode. The fixed mode is to configure fixed cells for different branches according to actual coverage scenes, wherein the cells can be provided by a baseband feed-in module or a radio frequency feed-in module; the adaptive mode is to dynamically adjust the cell configuration.
The remote unit is configured to radiate the radio frequency signal into free space.
The remote unit is used for realizing wireless signal amplification and coverage.
In the embodiment, the base station unit is used for providing the digital signals supporting the cells with multiple standards and converting the radio frequency signals containing the cells with multiple standards into the digital signals, the extension unit is used for converting the digital signals into the radio frequency signals, and distributing the radio frequency signals to the remote units of different branches according to the cells configured by each branch, and the remote units radiate the radio frequency signals to free space, so that the cells provided by multiple modes can be supported, the differential coverage of different scenes is realized, and the requirements of different coverage areas are met.
On the basis of the above embodiment, as shown in fig. 2, the base station unit in this embodiment includes a baseband feed-in module, a radio frequency feed-in module, a first main control module and a first power module;
the baseband feed-in module and the radio frequency feed-in module are respectively connected with the first main control module through signals;
the number of the baseband feed-in modules and the radio frequency feed-in modules can be configured according to practical application requirements. The baseband feed-in module in fig. 2 has two modes, denoted as M1 and M2, and the embodiment is not limited to the mode types of the baseband feed-in module.
The M1 baseband feed-in module, the M2 baseband feed-in module and the radio frequency feed-in module are respectively connected with the first main control module through high-speed digital cables.
The baseband feed-in module is used for independently establishing a cell in a baseband feed-in mode and transmitting a digital signal corresponding to the cell to the first main control module;
the M1 baseband feed-in module of the base station unit establishes a cell and transmits a digital baseband signal BBM1 to the first main control module of the base station unit.
The M2 baseband feed-in module of the base station unit establishes a cell and transmits the digital baseband signal BBM2 to the first main control module of the base station unit.
The radio frequency feed-in module is used for converting radio frequency signals generated by cells with various systems in space into digital signals in a radio frequency feed-in mode and transmitting the digital signals to the first main control module;
the radio frequency feed-in module of the base station unit receives the wireless signals in the space through the antenna, amplifies, filters and analog-to-digital converts the wireless signals into digital baseband signals, separates digital baseband signals RFM1 of M1 system and digital baseband signals RFM2 of M2 system, and transmits the digital baseband signals RFM1 and the digital baseband signals RFM2 to the first main control module of the base station unit.
The first main control module is used for transmitting the digital signals transmitted by the baseband feed-in module and the radio frequency feed-in module to the expansion unit after re-framing;
the first main control module of the base station unit reassembles the received digital baseband signals BBM1, BBM2, RFM1 and RFM2 and transmits them to the extension unit via CPRI (The Common Public Radio Interface, common public radio interface) protocol.
The first power supply module is used for supplying power to the M1 baseband feed-in module, the M2 baseband feed-in module, the radio frequency feed-in module and the first main control module.
In the embodiment, the base band feed-in module and the radio frequency feed-in module in the base station unit provide two modes of cells, the expansion unit distributes signals according to the cell configuration of each branch, supports the base band feed-in mode and the radio frequency feed-in mode, and is applicable to different coverage area requirements.
On the basis of the above embodiment, as shown in fig. 3, the extension unit in this embodiment includes a second power module, a second main control module, and a first radio frequency module;
the second main control module is in signal connection with the first radio frequency module;
the second main control module is connected with the first radio frequency module through a radio frequency cable.
The second main control module is used for carrying out frame decomposition on the received digital signals, and sending the digital signals subjected to frame decomposition corresponding to the cells to the first radio frequency module corresponding to each branch according to the cells configured by the branches connected with the expansion unit; wherein the branches are in one-to-one correspondence with the first radio frequency modules;
the expansion units are connected with the branches through radio frequency cables in a star mode, namely one expansion unit is connected with a plurality of branches. The number of the first radio frequency modules in the extension unit can be configured according to actual application requirements.
The first radio frequency module is used for converting the digital signal into a radio frequency signal, amplifying and filtering the radio frequency signal and transmitting the radio frequency signal to a remote unit on a branch corresponding to the first radio frequency module;
the second power module is used for supplying power to the second main control module and the first radio frequency module.
Based on the above embodiment, as shown in fig. 4, in this embodiment, the remote units on each branch are cascaded by a radio frequency cable chain; each remote unit comprises a coupler, a second radio frequency module, an antenna module and a third power module;
the coupler is in signal connection with the second radio frequency module, and the second radio frequency module is in signal connection with the antenna module;
the coupler, the second radio frequency module and the antenna module are sequentially connected through radio frequency cables.
The first radio frequency module is used for amplifying and filtering the radio frequency signals and then transmitting the radio frequency signals to a remote unit at one end of a branch corresponding to the first radio frequency module;
the coupler in each remote unit is used for coupling part of the radio frequency signals to the second radio frequency module of the remote unit and transmitting the rest of the uncoupled radio frequency signals to the next remote unit of the remote unit;
the amount of coupling of the RF signal by the coupler is determined by the distance between the remote unit and the extension unit, and the number of remote units on the branch where the remote unit is located. The closer the distance, the fewer the number of coupled radio frequency signals.
The second radio frequency module in each remote unit is used for amplifying and filtering the radio frequency signals and then transmitting the radio frequency signals to the antenna module;
the antenna module is used for radiating the radio frequency signals into free space to realize wireless signal coverage, and the specific flow is shown in fig. 5.
The third power module is used for supplying power to the second radio frequency module and the coupler.
Based on the above embodiment, in this embodiment, chain cascading is implemented between the extension units through optical fibers; the first main control module is used for transmitting the digital signals transmitted by the baseband feed-in module and the radio frequency feed-in module to the expansion unit at one end after re-framing;
a plurality of extension units are cascaded in a chain, and a base station unit is connected to only extension units located at one end of the chain. The first main control module transmits the digital signal after the re-framing to the extension unit connected with the base station unit.
Each extension unit is further adapted to transmit the digital signal to a next extension unit of each extension unit.
Each expansion unit converts and distributes the digital signal to a remote unit and forwards the digital signal to the next expansion unit adjacent thereto.
Based on the above embodiments, in this embodiment, the baseband feed-in module is further configured to analyze uplink received data, obtain a terminal load rate of each branch corresponding to a cell established by the baseband feed-in module, and send the terminal load rate to the first main control module;
uplink received data refers to data sent by the terminal to the cell, such as the identity of the access terminal. The terminal load rate refers to the proportion of the number of terminals actually accessed by the coverage area of the branch to the maximum number of terminals accessible by the coverage area of the branch.
The number of terminals actually accessed by the coverage area of the branch is the sum of the numbers of terminals accessed by the coverage areas of all the remote units in the branch.
The maximum number of terminals accessible to the coverage area of the leg is the sum of the maximum number of terminals accessible to the coverage areas of all the remote units in the leg.
And sending the terminal load rate of each branch to the first main control module. At this time, the branches are in a cell monitoring state, and the first main control module of the base station unit monitors the received terminal load rate of each branch in real time.
The first main control module is used for carrying out cell switching on the branch corresponding to the cell established by the baseband feed-in module according to the terminal load rate of each branch and a preset threshold.
The terminal load rate of each branch may be compared with a preset threshold, or the sum of the terminal load rates of all branches may be compared with a preset threshold.
When the terminal load rate is too high, the corresponding partial branch of the baseband feed-in module can be switched to the cell provided by other modules. The cells provided by the other modules may be cells provided by other baseband feed modules or radio frequency feed modules, and the embodiment is not specifically limited.
When the terminal load rate is too low, the corresponding partial branches of other modules can be switched to the cell provided by the baseband feed-in module.
According to the embodiment, the coverage cells of each far-end branch are adjusted according to the terminal load rate and the preset threshold, so that the differentiated coverage of different scenes is realized.
On the basis of the above embodiment, the preset threshold in this embodiment includes a preset overload threshold and a preset idle threshold.
In this embodiment, two threshold values, that is, a preset overload threshold and a preset no-load threshold, are set to determine the overload condition and the no-load condition of the branch.
Based on the above embodiments, in this embodiment, the first main control module is configured to add terminal load rates of all branches corresponding to a cell established by the baseband feed-in module;
if the addition result is larger than the preset overload threshold, switching a branch corresponding to the cell established by the baseband feed-in module to the cell provided by the radio frequency feed-in module;
and in a preset time period, if the sum of the terminal load rates of all the branches corresponding to a certain baseband feed-in module continuously exceeds a preset overload threshold, entering a cell switching state.
The first main control module of the baseband feed-in module selects a branch corresponding to the baseband feed-in module to switch to a cell provided by the radio frequency feed-in module, and notifies the second main control module of the expansion unit to switch a service cell of the selected branch from the baseband feed-in module to the radio frequency feed-in module, and after the operation is completed, the cell switch state is exited, and the cell monitor state is entered, so that the load of the branch corresponding to the baseband feed-in module is reduced, and normal communication is ensured.
And if the addition result is smaller than the preset no-load threshold, switching a branch corresponding to the cell provided by the radio frequency feed-in module to the cell established by the baseband feed-in module.
And in a preset time period, if the sum of the terminal load rates of all the branches corresponding to a certain baseband feed-in module is continuously lower than a preset idle threshold, entering a cell switching state.
The first main control module of the baseband feed-in module selects a branch corresponding to the radio frequency feed-in module to switch to a cell provided by the baseband feed-in module, and notifies the second main control module of the expansion unit to switch the service cell of the selected branch from the radio frequency feed-in module to the baseband feed-in module, and after the operation is completed, the cell switch state is exited, and the cell monitor state is entered, so that the utilization rate of the baseband feed-in module is improved, and the communication quality is improved.
In the embodiment, under the condition that the branch corresponding to the baseband feed-in module is overloaded or unloaded, the self-adaptive switching of cells in different modes is performed, the cell characteristics of different coverage areas are differentiated, and under the condition of ensuring normal communication, the utilization rate of the baseband feed-in module is improved, and the communication quality is improved.
On the basis of the above embodiment, in this embodiment, the baseband feed-in module is configured to analyze uplink received data, obtain a terminal load rate and a user access number of each branch corresponding to a cell established by the baseband feed-in module, and send the terminal load rate and the user access number to the first main control module;
the user access number may be a key customer access number. The key client access number is the number of clients with access duration exceeding the preset duration, or VIP clients of operators.
The baseband feed-in module in this embodiment analyzes uplink received data, and obtains a terminal load rate and a user access number.
The first main control module is configured to, if the addition result is greater than the preset overload threshold, perform weighted addition on the terminal load rate, the user access number and the coverage area criticality of each branch corresponding to the cell established by the baseband feed-in module, and switch the branch with the lowest weighted addition result to the cell provided by the radio frequency feed-in module;
coverage area criticality refers to the importance level of a branch coverage area, such as an office area that is higher than the importance level of a non-office area.
And multiplying the terminal load rate, the user access number and the coverage area criticality of each branch corresponding to the cell established by the baseband feed-in module by the corresponding weight proportion, adding, sequencing the addition results, and preferentially switching the branch with the lowest weighted addition result.
The first main control module of the base station unit informs the second main control module of the extension unit, and the service cell transmitted to the branch with the lowest weighted addition result is switched from the baseband feed-in module to the radio frequency feed-in module. And switching the branch with low load to the radio frequency feed-in module, so that the load of the baseband feed-in module is reduced on one hand, and meanwhile, the communication quality of the radio frequency feed-in module is ensured.
And if the addition result is smaller than the preset no-load threshold, carrying out weighted addition on the terminal load rate, the user access number and the coverage area criticality of each branch corresponding to the cell provided by the radio frequency feed-in module, and switching the branch with the highest weighted addition result to the cell established by the baseband feed-in module.
And multiplying the terminal load rate, the user access number and the coverage area criticality of each branch corresponding to the cell provided by the radio frequency feed-in module by the corresponding weight proportion, adding, sequencing the adding result, and preferentially switching the branch with the highest weighted adding result.
The first main control module of the base station unit informs the second main control module of the extension unit, and the service cell transmitted to the branch with the highest weighted addition result is provided by the radio frequency feed-in module and is switched to the baseband feed-in module for providing. And switching the branch with high load to the baseband feed-in module, so that the load of the radio frequency feed-in module is reduced, the communication quality of the radio frequency feed-in module is ensured, and the utilization rate of the baseband feed-in module is improved.
According to the embodiment, the cell switching is performed based on the multi-dimensional factor weighted selection branch, the dynamic differential adjustment of the wireless coverage capacity of different areas is realized according to the characteristics of the coverage areas, technical support is provided for the differential service of operators, and the flexibility of cell scheduling is enhanced.
Based on the above embodiments, the system of the baseband feed-in module in this embodiment, and the system of the terminal corresponding to the terminal load rate and the user access number are the same.
As shown in fig. 6, the working principle of the adaptive mode in the cell configuration is: the M1 baseband feed-in module of the base station unit obtains M1 system terminal load rates and key client access numbers of different branches between the extension unit and the remote unit by analyzing uplink received data, and transmits the data to the first main control module of the base station unit.
The M2 baseband feed-in module of the base station unit can count M2 system terminal load rates and key client access numbers of different branches between the extension unit and the remote unit by analyzing uplink received data, and transmits the data to the first main control module of the base station unit.
At this time, the device is in a cell monitoring state, and the first main control module of the baseband unit monitors the received terminal load rate in real time.
And when the M1 system terminal load rate continuously exceeds a preset overload threshold in a preset time period, entering a cell switching state. The first main control module of the baseband unit performs weighted addition calculation on the elements such as M1 system terminal load rate, M1 system key customer access number, coverage area criticality and the like of each branch of the cell provided by the M1 baseband feed-in module through a certain weight proportion, and sorts the weighted addition data. And preferentially carrying out cell switching on the branch with the lowest weighted value.
The first main control module of the baseband unit informs the second main control module of the expansion unit, and the service cell transmitted to the branch with the lowest weighted value is switched from the M1 baseband feed-in module of the baseband unit to the radio frequency feed-in module; after the operation is finished, the cell switching state is exited, and the cell monitoring state is entered.
And in a preset time period, when the M1 terminal load rate is lower than a preset idle threshold, entering a cell switching state. The first main control module of the baseband unit performs weighted addition calculation on elements such as a historical M1 system terminal load rate, a historical M1 system key client access number, coverage area criticality and the like of each branch of the cell provided by the radio frequency feed-in module through a certain weight proportion, and sorts the weighted addition data. And carrying out cell switching on the branch with the highest weighted value preferentially.
The first main control module of the baseband unit informs the second main control module of the expansion unit, and the service cell transmitted to the branch with the highest weighted value is switched from the radio frequency feed-in module of the baseband unit to the M1 baseband feed-in module; after the operation is finished, the cell switching state is exited, and the cell monitoring state is entered.
And when the M2 system terminal load rate continuously exceeds a preset overload threshold in a preset time period, entering a cell switching state. The first main control module of the baseband unit performs weighted addition calculation on the elements such as M2 system terminal load rate, M2 system key customer access number, coverage area criticality and the like of each branch of the cell provided by the M2 baseband feed-in module through a certain weight proportion, and sorts the weighted addition data. And preferentially carrying out cell switching on the branch with the lowest weighted value.
The first main control module of the baseband unit informs the second main control module of the expansion unit, and the service cell transmitted to the branch with the lowest weighted value is switched from the M2 baseband feed-in module of the baseband unit to the radio frequency feed-in module; after the operation is finished, the cell switching state is exited, and the cell monitoring state is entered.
And in a preset time period, when the M2 system terminal load rate is lower than a preset no-load threshold, entering a cell switching state. The first main control module of the baseband unit carries out weighting calculation on elements such as a historical M2 system terminal load rate, a historical M2 system key client access number, coverage area criticality and the like of each branch of a cell provided by the radio frequency feed-in module through a certain weight proportion, and sorts the weighted data. And carrying out cell switching on the branch with the highest weighted value preferentially.
The first main control module of the baseband unit informs the second main control module of the expansion unit, and the service cell transmitted to the branch with the highest weighted value is switched from the radio frequency feed-in module of the baseband unit to the M2 baseband feed-in module; after the operation is finished, the cell switching state is exited, and the cell monitoring state is entered.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A wireless distributed signal coverage system comprising a base station unit, a plurality of extension units, and a plurality of remote units on a branch;
the base station unit is in signal connection with the extension units, and each extension unit is in signal connection with a remote unit on one or more branches;
the base station unit is used for providing digital signals supporting cells with various standards and converting radio frequency signals containing the cells with various standards into digital signals;
the expansion unit is used for converting the digital signals into radio frequency signals and transmitting the radio frequency signals corresponding to the cells configured by each branch to the remote unit on each branch;
the remote unit is used for radiating the radio frequency signals into free space;
the base station unit comprises a baseband feed-in module, a radio frequency feed-in module, a first main control module and a first power supply module;
the baseband feed-in module and the radio frequency feed-in module are respectively connected with the first main control module through signals;
the baseband feed-in module is used for establishing a cell and transmitting digital signals corresponding to the cell to the first main control module;
the radio frequency feed-in module is used for converting radio frequency signals of cells with various systems in space into digital signals and transmitting the digital signals to the first main control module;
the first main control module is used for transmitting the digital signals transmitted by the baseband feed-in module and the radio frequency feed-in module to the expansion unit after re-framing;
the first power supply module is used for supplying power to the baseband feed-in module, the radio frequency feed-in module and the first main control module;
the baseband feed-in module is further used for analyzing uplink received data, acquiring a terminal load rate of each branch corresponding to a cell established by the baseband feed-in module, and sending the terminal load rate to the first main control module;
the first main control module is used for carrying out cell switching on the branch corresponding to the cell established by the baseband feed-in module according to the terminal load rate of each branch and a preset threshold;
the preset threshold comprises a preset overload threshold and a preset no-load threshold;
the first main control module is used for adding the terminal load rates of all branches corresponding to the cell established by the baseband feed-in module;
if the addition result is larger than the preset overload threshold, switching a branch corresponding to the cell established by the baseband feed-in module to the cell provided by the radio frequency feed-in module;
and if the addition result is smaller than the preset no-load threshold, switching a branch corresponding to the cell provided by the radio frequency feed-in module to the cell established by the baseband feed-in module.
2. The wireless distributed signal coverage system of claim 1, wherein the expansion unit comprises a second power module, a second master control module, and a first radio frequency module;
the second main control module is in signal connection with the first radio frequency module;
the second main control module is used for carrying out frame decomposition on the digital signals, and sending the digital signals corresponding to the cells after frame decomposition to the first radio frequency module corresponding to each branch according to the cells configured by the branches connected with the expansion unit; wherein the branches are in one-to-one correspondence with the first radio frequency modules;
the first radio frequency module is used for converting the digital signal into a radio frequency signal, amplifying and filtering the radio frequency signal and transmitting the radio frequency signal to a remote unit on a branch corresponding to the first radio frequency module;
the second power module is used for supplying power to the second main control module and the first radio frequency module.
3. The wireless distributed signal coverage system of claim 2, wherein the chain-type cascade between the remote units on each leg;
each remote unit comprises a coupler, a second radio frequency module, an antenna module and a third power module;
the coupler is in signal connection with the second radio frequency module, and the second radio frequency module is in signal connection with the antenna module;
the first radio frequency module is used for amplifying and filtering the radio frequency signals and then transmitting the radio frequency signals to a remote unit at one end of a branch corresponding to the first radio frequency module;
the coupler in each remote unit is used for coupling part of the radio frequency signals to the second radio frequency module and transmitting uncoupled radio frequency signals to the next remote unit of each remote unit;
the second radio frequency module in each remote unit is used for amplifying and filtering the radio frequency signals and then transmitting the radio frequency signals to the antenna module;
the antenna module is used for radiating the radio frequency signals to free space;
the third power module is used for supplying power to the second radio frequency module and the coupler.
4. The wireless distributed signal coverage system of claim 2, wherein the extension units are linked in cascade;
the first main control module is used for transmitting the digital signals transmitted by the baseband feed-in module and the radio frequency feed-in module to the expansion unit at one end after re-framing;
each extension unit is further adapted to transmit the digital signal to a next extension unit of each extension unit.
5. The wireless distributed signal coverage system according to claim 1, wherein the baseband feed-in module is configured to analyze uplink received data, obtain a terminal load rate and a user access number of each branch corresponding to a cell established by the baseband feed-in module, and send the terminal load rate and the user access number to the first main control module;
the first main control module is configured to, if the addition result is greater than the preset overload threshold, perform weighted addition on the terminal load rate, the user access number and the coverage area criticality of each branch corresponding to the cell established by the baseband feed-in module, and switch the branch with the lowest weighted addition result to the cell provided by the radio frequency feed-in module;
and if the addition result is smaller than the preset no-load threshold, carrying out weighted addition on the terminal load rate, the user access number and the coverage area criticality of each branch corresponding to the cell provided by the radio frequency feed-in module, and switching the branch with the highest weighted addition result to the cell established by the baseband feed-in module.
6. The wireless distributed signal coverage system according to claim 5, wherein the system of the baseband feed-in module and the system of the terminal corresponding to the terminal load rate and the user access number are the same.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281730A (en) * | 2013-06-25 | 2013-09-04 | 重庆邮电大学 | System and method of realizing C-RAN load balance on the basis of household base stations |
| CN106550371A (en) * | 2015-09-23 | 2017-03-29 | 中兴通讯股份有限公司 | A kind of multiple source cut-in method and system |
| CN111010680A (en) * | 2019-12-23 | 2020-04-14 | 京信通信系统（中国）有限公司 | Indoor distribution system |
| CN111683383A (en) * | 2020-06-08 | 2020-09-18 | 太仓市同维电子有限公司 | Intelligent controller and multi-cell load balancing method of distributed indoor division 5G system |
| CN112804691A (en) * | 2021-01-29 | 2021-05-14 | 京信网络系统股份有限公司 | Indoor distribution system and signal transmission method |
-
2021
- 2021-12-21 CN CN202111574417.5A patent/CN114245393B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281730A (en) * | 2013-06-25 | 2013-09-04 | 重庆邮电大学 | System and method of realizing C-RAN load balance on the basis of household base stations |
| CN106550371A (en) * | 2015-09-23 | 2017-03-29 | 中兴通讯股份有限公司 | A kind of multiple source cut-in method and system |
| CN111010680A (en) * | 2019-12-23 | 2020-04-14 | 京信通信系统（中国）有限公司 | Indoor distribution system |
| CN111683383A (en) * | 2020-06-08 | 2020-09-18 | 太仓市同维电子有限公司 | Intelligent controller and multi-cell load balancing method of distributed indoor division 5G system |
| CN112804691A (en) * | 2021-01-29 | 2021-05-14 | 京信网络系统股份有限公司 | Indoor distribution system and signal transmission method |
Non-Patent Citations (1)
| Title |
|---|
| 江鹏等."LTE多业务全光分布式系统的应用研究".《移动通信》.2013,42-46. * |
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