Method for optimizing wireless link monitoring window parameter in wireless heterogeneous communication network

Abstract

The invention relates to a method of optimizing a radio link monitoring window parameter in a user equipment of a radio heterogeneous communication network, the radio heterogeneous communication network including a macro cell and a small cell, the method including the steps of: receiving a first radio link monitoring window parameter and a second radio link monitoring window parameter from an e NB of the macro cell; using the first parameter below the second parameter as the radio link monitoring window parameter; determining whether the user equipment is close to the small cell; and if a determination result is negative, then continuing the use of the first parameter as the radio link monitoring window parameter, or if the determination result is positive, then using the second parameter as the radio link monitoring window parameter. The user equipment uses a third parameter obtained from an e NB of the small cell as the radio link monitoring window parameter after being handed over to the small cell. All these three parameters are related to the motion speed. With the solution of the invention, different time values of radio link invalidation can be set for different scenarios in a heterogeneous network to thereby improve mobility performance.

Description

technical field [0001] The invention relates to a wireless heterogeneous communication network, in particular to a method for optimizing wireless link monitoring window parameters in the wireless communication network. Background technique [0002] 3GPP discusses the mobility improvement of heterogeneous network (Heterogeneous Network: HetNet) of LTE. The handover technology of high-speed mobile user equipment is a difficult point in HetNet technology. In RAN2 heterogeneous network mobility improvement, radio link failure (Radio Link Failure: RLF) caused by heterogeneous network mobility is an important research topic in RAN2. It can be seen from the simulation that the deterioration of the handover performance of the user equipment moving at high speed is mainly due to the too small coverage of the "low transmission power node". Most of such handover failures eventually lead to radio link failure. Since the overhead of wireless link failure is large (even if it is possib...

AI Technical Summary

Problems solved by technology

However, in a heterogeneous network, due to the introduction of small cells, such as micro cells (Pico Cell) and family cells (Femto Cell) to reduce the load of macro cells, or to enhance the coverage of macro cells at the edge of macro cells, the network the situation is more complicated

Traditional T310 settings are not suitable for different scenarios in heterogeneous networks

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