LTE (Long-Term Evolution) cell reselection method

Abstract

The invention discloses an LTE (Long-Term Evolution) cell reselection method. The LTE cell reselection method comprises the step that a cell representing the load level is increased in a system broadcasting message, wherein the load level is the wireless resource utilization ratio or cell capacity; a network runs, UE (User equipment) is started up for selecting an initial cell, and the selected service cell sends a resource state request message to the cell of an adjacent cell list, all adjacent cells feed the load level measured by the cell to the service cell according to the designated resource sending period in a sent resource state request; the service cell issues a system broadcasting message, the UE receives the system broadcasting message to acquire the load level of the service cell and the load levels of the adjacent cells, judging whether to continue the measurement of the adjacent cells, and reselecting a cell according to the measurement result. According to the LTE cell reselection method, the purpose of directly balancing the loads of the cells in the network when the UE accesses can be realized, the throughput and resource utilization efficiency of the network can be improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, and more specifically relates to an LTE cell reselection method. Background technique [0002] Data services in mobile communications will increase exponentially in the future. In order to meet this challenge, the international standard organization 3GPP proposed a research project on small cell enhancement in the physical layer in Release12. Small cells in micro cells are low-power wireless access nodes. Deploying dense small cells under the coverage of macro cells is an important application scenario. In this scenario, small cells are used to share a large amount of data services in macro cells, which can effectively improve the overall network efficiency. Throughput and resource utilization. [0003] After the user terminal UE initially selects a cell, it will start a cell reselection process. The current LTE cell reselection mainly measures adjacent cells, and then reselects ce...

AI Technical Summary

Problems solved by technology

In the macro cell and small cell scenario, the signal quality of the macro cell received by the UE is likely to be stronger than the signal quality of the small cell, causing most of the UEs in the coverage area to reselect to the macro cell, and then initiate RRC (RadioResourceControl, radio resource control protocol) connection, which increases the pressure on the macro cell, while the small cell does not play a role in unloading the load. The utilization rate of the entire network resource is low, and there are also differences in the load level between the macro cell and the small cell and between the small cells. balanced situation

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