Method for detecting td-scdma network co-channel interference, base station and rnc
A technology of TD-SCDMA and co-channel interference, which is applied to the square base station detecting TD-SCDMA network co-frequency interference, and the RNC field for detecting TD-SCDMA network co-frequency interference, which can solve the problem of unfavorable co-channel interference elimination and network optimization. sexual issues
Active Publication Date: 2017-04-19
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
The performance of the same-frequency joint detection algorithm has its limitations, and it is not effective within the range of the same-frequency interference power in the system [-40dBm, -120dBm]
In addition, ISCP measurement only reflects the overall interference situation of the network. Therefore, network optimization is not targeted, which is not conducive to the elimination of co-channel interference
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[0091] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0092] In order to solve the co-channel interference in the system and optimize the network, it is necessary to detect the co-channel interference. At present, the TD-SCDMA system adopts the same-frequency joint detection algorithm, which is a kind of multi-user detection (Multi-userDetection). In the CDMA system, the signals of multiple users are aliased in the time domain and the frequency domain. When receiving, a certain signal separation method must be used in the digital domain to separate the signals of each user. Signal separation methods can be roughly divided into two types: single-user detection technology and multi-user detection technology.
[0093] In the actual CDMA mobile communication system, because there is a c...
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The embodiment of the invention provides a method for detecting co-frequency interference of a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) network, a base station and an RNC (Radio Network Controller). The TD-SCDMA network comprises a cell and an adjacent cell. The method comprises the following steps: measuring the ISCP (Interference on Signal Code Power) of the cell by using the base station; when the ISCP of the cell surpasses a first preset threshold value, performing channel estimation on the adjacent cell, and judging whether an activated channel estimation window exists in the adjacent cell or not; if so, calculating the RSCP (Received Signal Code Power) of a single VRU (Voice Response Unit) reaching the cell in the adjacent region specific to the estimated channel estimation window of the adjacent cell; calculating the average value of the RSCP, and transmitting the average value of the RSCP to the RNC; calculating the ISCP of the adjacent cell on the cell according to the average value of the RSCP by using the RNC. By adopting the method, the co-frequency interference of adjacent cells can be measured and counted under the situation of any co-frequency interference power magnitude in the system, so that a co-frequency interference source is controlled to reduce the influence of co-frequency interference on services. Moreover, network optimization is performed according to statistical data, so that the co-frequency interference environment is reduced.
Description
technical field [0001] The present application relates to the field of communication technology, in particular to a method for detecting co-channel interference in a TD-SCDMA network, a square base station for detecting co-channel interference in a TD-SCDMA network, and a method for detecting TD-SCDMA network co-channel interference. The RNC that interferes with the same frequency in the SCDMA network. Background technique [0002] In wireless network networking, due to limited spectrum resources, spectrum resources of the same frequency will be reused in different areas, which will inevitably lead to intra-system co-channel interference. The so-called co-channel interference means that the carrier frequency of the unwanted signal is the same as the carrier frequency of the useful signal, and causes interference to the receiver receiving the useful signal of the same frequency. In wireless network networking, the frequency reuse coefficient in the system is getting larger a...
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IPC IPC(8): H04W24/02H04L25/02H04W16/14
Inventor 刘杨
Owner DATANG MOBILE COMM EQUIP CO LTD
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