Access Method of Low Power Base Station Cell in Hybrid Network

Abstract

The present invention provides an access method for a low-power base station cell in a hybrid network, which is applied in a wireless communication network system at least formed by a macro base station, a user terminal, and a plurality of low-power base stations located in coverage of the macro base station and having a cell range extension (CRE) function. The access method mainly comprises: enabling a macro base station to broadcast cell broadcast information carrying physical cell numbers and offset value information of all low-power base stations in the coverage of the macro base station; when the user terminal finds the cell broadcast information, extracting the physical cell numbers and offset value information carried in the cell broadcast information, and performing a synchronous detection on the low-power base stations; performing RRM measurement on detected low-power base stations; determining, according to a measurement result, whether the user terminal is located in a cell extension range of one of the low-power base stations; and if yes, selecting the low-power base station as a target cell and initiating an access request. Therefore, the problem that a user in a CRE range cannot directly detect and access a weak cell after turning on a device is solved.

Description

technical field [0001] The invention relates to an access technology in the field of wireless communication, in particular to a method for accessing a low-power base station in a hybrid network. Background technique [0002] In the development of network communication, network coverage has always been the focus of operators' network construction, and it is also one of the considerations for users to choose operators. At present, the wide-area network coverage is quite stable. For example, a macro cell (Macro cell) base station with a large coverage area can be applied to user traffic with a relatively sparse population and a fast moving speed, even in remote villages. Wide area network coverage is also achieved. [0003] However, as far as densely populated cities are concerned, with the density of high-rise buildings and the increase of mobile communication users in buildings, the indoor area has always been an area where the network coverage of the macrocellular system is...

AI Technical Summary

Problems solved by technology

If each user terminal within the scope of the CRE needs to access the cell of the macro base station first, exchange some necessary information with the macro base station and then switch to the low-power base station, this will not only increase the load of the macro base station, but also increase the The time for the user terminal to establish a link with the network

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