Disturbance source positioning method for time division-long term evolution (TD-LTE)
A positioning method and interference source technology, applied in the transmission system, transmission monitoring, electrical components, etc., can solve the problems of blindness in the investigation process, more manpower, and common channel interference, etc., to achieve less manpower and material resources, low cost, and accuracy sex high effect
Inactive Publication Date: 2013-06-05
TONGJI UNIV
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[0009] 3. If the problem is co-channel interference, you need to find the source of the interference
In the existing technology, in the process of finding the interference source, it is usually through analyzing the characteristics of the interfered area, or using special testing instruments to assist in the analysis and judgment. Obviously, the disadvantage is that the troubleshooting process is blind and complicated, often It will take a lot of manpower or a long time to find the source of interference
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[0043] The schematic diagram of the TD-LTE system is as follows figure 2 As shown, in this system, there are transmitting base station BS0 and interfering base station BS1 not far from BS0, which transmit radio signals to mobile station MS, and the signals transmitted between base station BS0 and mobile station MS are signals transmitted by carrier waves. The radio signal from BS0 is considered the wanted signal, while all other signals are interferers.
[0044] In a TD-LTE radio network, due to the limited number of frequencies available to TD-LTE radio network operators, all frequencies must be reused. The multiplexing of frequencies leads to interference; that is, the radio signal received by the mobile station MS at a certain point is a mixture of the carrier signal from BS0 and the signal from another base station BS1 transmitted on the same frequency as used by BS0. Other base stations may also constitute interference (not shown here). The carrier signal comes from ba...
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The invention relates to a disturbance source positioning method for time division-long term evolution (TD-LTE). The method comprises the following steps of: 1) detecting frequency domain and time domain characteristics of signals, and extracting disturbed signals of a disturbed cell broadcast channel; 2) removing carrier wave from the disturbed signals, and acquiring residual signals consisting of disturbance signals and noise signals; 3) associating the residual signals with known pseudo random sequence scrambling codes to obtain a pseudo random sequence scrambling code corresponding to a first disturbance signal with maximum disturbance influence; and 4) determining a cell ID through the pseudo random sequence scrambling code corresponding to the first disturbance signal, and determining the position of a first disturbance cell according to the cell ID. Compared with the prior art, the method has the advantages that when a disturbance source is searched, the cell ID of the disturbance cell is determined by determining the pseudo random sequence scrambling code, and the position of the cell is determined according to the cell ID through the configuration condition of the cell, so the searching aim is define, the consumption of manpower and material resources is low, the cost is low, and the accuracy is high.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for locating interference sources used in a TD-LTE system. Background technique [0002] At present, 3G (3rd Generation, third-generation mobile communication system) network has been commercialized and popularized rapidly in China, and in terms of 4G (4th Generation, fourth-generation mobile communication system) standard, TD-LTE standard with my country's independent intellectual property rights The commercial use of TD-LTE has also been put on the agenda, so finding an efficient planning and optimization method for the deployment of TD-LTE network is a matter of great concern. [0003] In the TD-LTE network, since the spectrum resource available to the TD-LTE network operator is limited, the frequency must be reused. Frequency reuse between cells leads to interference; that is, the radio signal received at a certain point within the cell is a mixture of...
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IPC IPC(8): H04W24/04H04B17/00
Inventor 王平刘富强肖娟韩静秦达曲景峰苏琳潘欢
Owner TONGJI UNIV