CN115085788B - Method and system for adjusting uplink gain of repeater - Google Patents
Method and system for adjusting uplink gain of repeater Download PDFInfo
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- CN115085788B CN115085788B CN202211011755.2A CN202211011755A CN115085788B CN 115085788 B CN115085788 B CN 115085788B CN 202211011755 A CN202211011755 A CN 202211011755A CN 115085788 B CN115085788 B CN 115085788B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15578—Relay station antennae loop interference reduction by gain adjustment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15585—Relay station antennae loop interference reduction by interference cancellation
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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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a method and system for adjusting the uplink gain of a repeater, wherein a base station network manager regularly counts the output power of a host base station with the repeater and sends the output power to the repeater network manager; the network manager of the repeater periodically counts the input power and the uplink gain of the repeater, then calculates the Pin of the repeater, and correspondingly adjusts the uplink gain of the repeater to make the Pin of the repeater consistent with the preset level value A, thereby controlling the interference of the repeater on the bottom noise of the host base station and ensuring the effective coverage range of the host base station.
Description
Technical Field
The invention relates to the technical field of wireless coverage of mobile communication base stations, in particular to a method and a system for adjusting uplink gain of a repeater.
Background
The repeater can couple the existing network 4G/5G signals, quickly solves the problem of existence of the target area 4G/5G signals, and has low construction cost and simple and quick engineering implementation.
However, in the existing network engineering construction, the repeater station is easy to cause the noise at the bottom of the host base station to be raised, so that the index of the host base station is deteriorated and the coverage area is shrunk.
Therefore, it is desirable to provide a method and system for controlling the interference of the repeater to the noise at the bottom of the host base station and ensuring the effective coverage of the host base station.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a system for adjusting the uplink gain of a repeater, which can control the interference of the repeater on the bottom noise of a host base station and ensure the effective coverage range of the host base station.
In order to solve the above technical problem, the present invention provides a method for adjusting uplink gain of a repeater, which comprises the following steps:
s1, a base station network manager regularly counts the output power of a host base station with a repeater, and sends cellID, PCI and the output power of the host base station to a repeater network manager for managing the repeater;
s2, the repeater webmaster periodically counts the input power and the uplink gain of the repeater under the host base station according to the cellID and the PCI of the host base station and the time synchronization periodically counted by the base station webmaster;
s3, the network manager of the repeater calculates the Pin of the repeater according to a first calculation formula; if the Pin of the repeater is larger than a preset level value A, the uplink gain of the repeater is lowered; if the Pin of the repeater is smaller than the preset level value A, the uplink gain of the repeater is increased to enable the Pin of the repeater to be consistent with the preset level value A;
the Pin of the repeater is the level value of the bottom noise of the repeater reaching a host base station;
the first calculation formula is: pin = white noise + uplink gain of the repeater + uplink noise coefficient of the repeater-uplink loss; the uplink loss = the host base station output power-the repeater input power.
Further, the preset level value a = preset level value Po of the noise at the bottom of the repeater reaching the host base station.
Further, the preset level value A = the sum Pz-10log (N) of the level values of the noise reaching the host base station from the bottom of the preset N repeaters.
Further, the preset level value A = the sum Pz-10log (Wz-Wn) of the level values of the noise reaching the host base station from the bottom of the preset n repeaters; wz is the sum of level values of n repeater bottom noises reaching the host base station by taking watt as a unit; wn is the level value of the noise at the bottom of the nth repeater reaching the host base station in watt.
Furthermore, the uplink noise coefficient of the repeater is 4 to 5dB.
In order to solve the above technical problem, the present invention also provides a system for adjusting the uplink gain of a repeater, which comprises a host base station with a repeater, a base station network manager connected with the host base station, and a repeater network manager connected with the base station network manager and managing the repeater;
the base station network manager comprises a first module for periodically counting the output power of the host base station and a second module for sending the cellID, the PCI and the output power of the host base station to the repeater network manager;
the repeater network manager comprises a third module which is used for periodically counting the input power and the uplink gain of the repeater under the host base station according to the cellID and the PCI of the host base station and the time synchronization periodically counted by the base station network manager; the fourth module is used for calculating the Pin of the repeater according to the first calculation formula; judging whether Pin of the repeater is larger than a preset level value A or not, and if yes, reducing the uplink gain of the repeater; a fifth module, for increasing the uplink gain of the repeater if the Pin of the repeater is less than the preset level value A, so that the Pin of the repeater is consistent with the preset level value A;
the Pin of the repeater is the level value of the bottom noise of the repeater reaching a host base station;
the first calculation formula is: pin = white noise + uplink gain of the repeater + uplink noise figure of repeater-uplink loss; the uplink loss = the host base station output power-the repeater input power.
Further, the preset level value a = preset level value Po of the noise at the bottom of the repeater reaching the host base station.
Furthermore, the device further comprises a sixth module, configured to calculate the preset level value a according to a second calculation formula; the second calculation formula is: a = Pz-10log (N); pz is the sum of level values of bottom noises of N preset repeaters reaching a host base station, and N is a natural number and represents the total number of repeaters under the host base station.
Furthermore, the device also comprises a seventh module for calculating the preset level value A according to a third calculation formula; the third calculation formula is: a = Pz-10log (Wz-Wn); wz is the sum of the output power of N repeaters with watt as a unit, wn is the output power of the nth repeater with watt as a unit, pz is the sum of level values of bottom noise of N preset repeaters reaching a host base station, N and N are natural numbers, and N represents the total number of repeaters under the host base station.
Furthermore, the uplink noise coefficient of the repeater is 4 to 5dB.
Compared with the prior art, the invention has the following beneficial effects: the invention can periodically count the output power of the host base station and the input power and the uplink gain of the repeater, then calculate the Pin of the repeater, and correspondingly adjust the uplink gain of the repeater to ensure that the Pin of the repeater is consistent with the preset level value A, thereby controlling the interference of the repeater on the noise at the bottom of the host base station and ensuring the effective coverage range of the host base station.
Drawings
FIG. 1 is a diagram illustrating steps of a method for adjusting uplink gain of a repeater according to an embodiment of the present invention;
FIG. 2 is a system structure diagram for adjusting uplink gain of a repeater according to an embodiment of the present invention;
FIG. 3 is a system configuration diagram for adjusting uplink gain of a repeater according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that the operations are performed in other sequences than in the embodiments of the invention.
Referring to fig. 1, a method for adjusting uplink gain of a repeater according to an embodiment of the present invention includes the following steps:
s1, a base station network manager periodically counts the output power of a host base station with a repeater, and sends the Cell ID (serving Cell ID), the PCI (Physical Cell Identifier) and the output power of the host base station to the repeater network manager for managing the repeater;
s2, periodically counting the input power and the uplink gain of the repeater under the host base station by the repeater webmaster according to the cellID and the PCI of the host base station and the time synchronization periodically counted by the base station webmaster;
s3, calculating the Pin of the repeater by the network manager of the repeater according to a first calculation formula; if Pin of the repeater is larger than a preset level value A, lowering the uplink gain of the repeater; if the Pin of the repeater is smaller than the preset level value A, the uplink gain of the repeater is increased to enable the Pin of the repeater to be consistent with the preset level value A;
wherein, pin of the repeater is the level value of the bottom noise of the repeater reaching the host base station. The first calculation formula is: pin = white noise + uplink gain of repeater + uplink noise figure of repeater-uplink loss. Uplink loss = host base station output power-repeater input power. In the first calculation formula, pin is in dBm.
According to practical conditions, the uplink noise coefficient of the repeater can be set to be 4-5 dB or other. White noise can be set to-174 dBm/Hz or other depending on the natural environment and temperature.
Specifically, the base station network manager periodically counts the output power of a plurality of host base stations with repeaters in the jurisdiction range, and then sends the cellID and PCI of the host base station and the output power to the repeater network manager. The network manager of the repeater can determine the ID of the repeater under the host base station through the cellID and the PCI, regularly count the input power and the uplink gain of the repeater through the ID of the repeater, and then calculate the Pin. The network manager of the repeater periodically counts the time of the input power and the uplink gain of the repeater, and periodically counts the time synchronization of the output power of the host base station with the network manager of the base station.
As in the example of fig. 2, when a repeater is located under a host base station, in step S3, a preset level value a may be set to a preset level value Po at which the repeater bottom noise reaches the host base station, where the level value Po is usually a parameter (in dBm) specified by the operator. I.e., a = Po.
As in the example of fig. 3, when there are more than two repeaters under one host base station, if the operator does not separately specify the level value Pn (in dBm) of each repeater bottom noise reaching the host base station, and only specifies the sum Pz (in dBm) of the level values of all repeater bottom noises reaching the host base station, then in step S3, the preset level value a may be set to be the difference between Pz and 10log (N), i.e., a = Pz-10log (N); n is a natural number and represents the total number of the repeaters under the host base station.
Alternatively, the preset level value a may also be set to a difference of Pz minus 10log (Wz-Wn), i.e., a = Pz-10log (Wz-Wn). Wz is the sum of the output power of n repeaters in watt unit, and Wn is the output power of the nth repeater in watt unit.
The embodiment of the invention also provides a system for adjusting the uplink gain of the repeater, which comprises a host base station with the repeater, a base station network manager connected with the host base station, and a repeater network manager connected with the base station network manager and the repeater. The repeater network management and the base station network management can be connected through an IP network. The repeater may be an integrated repeater device having two antennas, one for receiving and one for transmitting signals.
The base station network manager comprises a first module used for periodically counting the output power of the host base station and a second module used for sending the cellID, the PCI and the output power of the host base station to the repeater network manager.
The repeater network manager comprises a third module which is used for periodically counting the input power and the uplink gain of the repeater under the host base station according to the cellID and the PCI of the host base station and the time synchronization periodically counted by the base station network manager; the fourth module is used for calculating the Pin of the repeater according to the first calculation formula; judging whether Pin of the repeater is larger than a preset level value A or not, if so, reducing the uplink gain of the repeater; and if the Pin of the repeater is smaller than the preset level value A, the uplink gain of the repeater is increased, and the Pin of the repeater is consistent with the preset level value A.
Wherein, pin of the repeater is the level value of the bottom noise of the repeater reaching the host base station.
The first calculation formula is: pin = white noise + uplink gain of repeater + uplink noise figure of repeater-uplink loss. Uplink loss = host base station output power-repeater input power. In the first calculation formula, pin is in dBm.
According to practical conditions, the uplink noise coefficient of the repeater can be set to be 4-5 dB or other. White noise can be set to-174 dBm/Hz or other depending on the natural environment and temperature.
Referring again to the example of FIG. 2, when a repeater is located under a host base station, a predetermined level A may be set to a predetermined level Po at which the repeater bottom noise reaches the host base station, where Po is typically an operator-specified parameter (in dBm). I.e., a = Po.
As shown in fig. 3, when there are more than two repeaters under one host base station, if the operator does not separately specify the level Pn (in dBm) of the noise at the bottom of each repeater to reach the host base station, and only specifies the sum Pz (in dBm) of the level at which the noise at the bottom of all repeaters reaches the host base station, the preset level a may be set to the difference between Pz and 10log (N), i.e., a = Pz-10log (N); n is a natural number and represents the total number of the repeaters under the host base station. The repeater network manager in this embodiment further includes a sixth module, configured to calculate the preset level value a according to a second calculation formula. The second calculation formula is: a = Pz-10log (N).
Alternatively, the preset level value a may also be set to a difference of Pz minus 10log (Wz-Wn), i.e., a = Pz-10log (Wz-Wn). Wz is the sum of the output power of n repeaters in watt unit, and Wn is the output power of the nth repeater in watt unit. The repeater network manager of the embodiment further comprises a seventh module, configured to calculate a preset level value a according to a third calculation formula; the third calculation formula is: a = Pz-10log (Wz-Wn).
In summary, the method and system for adjusting uplink gain of a repeater according to the embodiments of the present invention may periodically count the output power of the host base station, the input power of the repeater and the uplink gain, then calculate the Pin of the repeater, and correspondingly adjust the uplink gain of the repeater to make the Pin of the repeater consistent with the preset level value a, thereby controlling the interference of the repeater on the bottom noise of the host base station and ensuring the effective coverage of the host base station.
The above examples merely represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications, such as combinations of different features in various embodiments, may be made without departing from the spirit of the invention, and these are within the scope of the invention.
Claims (10)
1. A method for adjusting uplink gain of a repeater is characterized by comprising the following steps:
s1, a base station network manager regularly counts the output power of a host base station with a repeater, and sends cellID, PCI and the output power of the host base station to the repeater network manager managing the repeater;
s2, the repeater webmaster periodically counts the input power and the uplink gain of the repeater under the host base station according to the cellID and the PCI of the host base station and the time synchronization periodically counted by the base station webmaster;
s3, the network manager of the repeater calculates the Pin of the repeater according to a first calculation formula; if the Pin of the repeater is larger than a preset level value A, the uplink gain of the repeater is lowered; if the Pin of the repeater is smaller than the preset level value A, the uplink gain of the repeater is increased to enable the Pin of the repeater to be consistent with the preset level value A;
the Pin of the repeater is a level value when the bottom noise of the repeater reaches a host base station;
the first calculation formula is: pin = white noise + uplink gain of the repeater + uplink noise coefficient of the repeater-uplink loss; the uplink loss = the host base station output power-the repeater input power.
2. The method of adjusting uplink gain of repeater according to claim 1, wherein the preset level value A = preset level value Po of the repeater bottom noise reaching the host base station.
3. The method of adjusting uplink gain of repeater as claimed in claim 1, wherein the preset level value a = sum Pz-10log (N) of level values of N preset repeater bottom noises reaching the host base station.
4. The method of adjusting repeater uplink gain according to claim 1, wherein the preset level value a = sum Pz-10log (Wz-Wn) of level values at which preset n repeater bottom noises reach a host base station; wz is the sum of the output power of n repeaters in watt, and Wn is the output power of the nth repeater in watt.
5. The method of adjusting uplink gain of a repeater as claimed in claim 1, wherein the uplink noise figure of the repeater is 4 to 5dB.
6. A system for adjusting the uplink gain of a repeater is characterized by comprising a host base station with the repeater, a base station network manager connected with the host base station, and a repeater network manager connected with the base station network manager and managing the repeater;
the base station network manager comprises a first module for periodically counting the output power of the host base station and a second module for sending the cellID, the PCI and the output power of the host base station to the repeater network manager;
the repeater network manager comprises a third module which is used for periodically counting the input power and the uplink gain of the repeater under the host base station according to the cellID and the PCI of the host base station and the time synchronization periodically counted by the base station network manager; the fourth module is used for calculating the Pin of the repeater according to the first calculation formula; judging whether Pin of the repeater is larger than a preset level value A or not, and if so, reducing the uplink gain of the repeater; a fifth module, for increasing the uplink gain of the repeater if the Pin of the repeater is less than the preset level value A, so that the Pin of the repeater is consistent with the preset level value A;
the Pin of the repeater is the level value of the bottom noise of the repeater reaching a host base station;
the first calculation formula is: pin = white noise + uplink gain of the repeater + uplink noise figure of repeater-uplink loss; the uplink loss = the host base station output power-the repeater input power.
7. The system for adjusting uplink gain of repeater according to claim 6, wherein the preset level value A = preset level value Po of the repeater bottom noise reaching the host base station.
8. The system for adjusting uplink gain of a repeater according to claim 6, further comprising a sixth module for calculating the preset level value A according to a second calculation formula; the second calculation formula is: a = Pz-10log (N); pz is the sum of level values of bottom noise of N preset repeaters reaching a host base station, and N is a natural number and represents the total number of repeaters brought under the host base station.
9. The system for adjusting uplink gain of a repeater according to claim 6, further comprising a seventh module for calculating the preset level value A according to a third calculation formula; the third calculation formula is: a = Pz-10log (Wz-Wn); wz is the sum of the output power of N repeaters with watt as a unit, wn is the output power of the nth repeater with watt as a unit, pz is the sum of level values of bottom noise of N preset repeaters reaching a host base station, N and N are natural numbers, and N represents the total number of repeaters under the host base station.
10. The system for adjusting uplink gain of a repeater according to claim 6, wherein the uplink noise figure of the repeater is 4 to 5dB.
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