Power adjustment method and device of remote radio unit

Abstract

The invention discloses a power adjustment method and device of a remote radio unit. The power adjustment method and device are used for achieving simply adjusting transmission power of the remote radio unit (RRU), improving optimization efficiency and saving a large amount of material cost and workload of engineering construction on the premise of not affecting achievement and performance of the existing system. The power adjustment method includes determining the RRU needing transmission power adjustment; determining the adjusted transmission power of the RRU needing transmission power adjustment; configuring the correspondence of the adjusted transmission power of the RRU needing transmission power adjustment and signal amplitude to the RRU needing transmission power adjustment by operating and maintaining an OM channel.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for adjusting power of a radio remote unit (Radio Remote Unit, RRU). Background technique [0002] In a Long Term Evolution (Long Term Evolution, LTE) system, coverage within a building is very important. According to the forecast of relevant agencies, about 80% of the traffic in the 4G phase (LTE) comes from indoors. Therefore, all operators are vigorously building indoor distribution systems, or improving deep coverage, improving user satisfaction, and improving the overall performance of wireless networks. [0003] To solve indoor coverage, there are two commonly used methods: indoor distribution system and outdoor distribution system. The indoor distribution system is a successful solution for indoor user groups to improve the mobile communication environment in buildings; it uses the indoor antenna distribution system to evenly distribu...

AI Technical Summary

Problems solved by technology

If each RRU is configured with a different power, it is equivalent to splitting the current cell into multiple cells, and the system will maintain the data of multiple cells, which will greatly increase the complexity of system implementation

However, in the actual optimization process, since different areas require different power, it is inevitable to adjust the transmit power of each RRU. The traditional method is to install an attenuator on the indoor sub-system, which not only requires more difficult engineering , and increase the construction cost, and the coverage method in the prior art requires the installation of an attenuator at each radio remote unit, and according to the existing equipment capacity, it can support several or even dozens of RRUs to be combined into one community, the above adjustment method needs to consume a lot of manpower and resources

[0007] Cell merging technology is often used in outdoor distribution systems, and it is also often used in outdoor scenes with linear coverage such as expressways. In these scenes, the downtilt and azimuth angles of antennas can be adjusted to reduce inter-cell interference, but engineering is required. Construction, it is impossible to reduce interference by adjusting the transmit power of an RRU covered by a certain cross-area as required

[0008] To sum up, in the existing technical solutions, there are mainly the above methods for adjusting the transmission power of the indoor distribution system. Meet the requirements of power adjustment for specific floors and specific scenarios during indoor coverage optimization

Another method is to transform the indoor distribution system, which requires engineering construction, adding or replacing the attenuator in the indoor distribution system, the construction period is long, the cost is high, and the optimization process is seriously affected

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