Method for controlling cell reselection and wireless communication terminal

Abstract

The invention provides a method for controlling cell reselection and a wireless communication terminal. The method for controlling cell reselection comprises the following steps: the resident number of cells per unit time is recorded to judge whether frequent reselection is performed; and if so, a frequent reselection protection strategy is started to record the cells with lower priorities in an inhibited reselection cell list, thus the terminal can reside in the cell with higher service quality or with more stable signal level as far as possible. By adopting the method for controlling cell reselection, the problem that the broadcast control channel (BCCH) information is decoded by the mobile terminal as the target cell is inhibited or not accessed can be avoided, the standby power can be reduced, the operating efficiency of protocol stack can be increased; and the reselection parameter can be adjusted dynamically according to the wireless environment, the frequent reselection problem caused by the frequent fluctuation of the electrical level of the cell can be avoided, and the quality of wireless communication service and the user experience can be increased.

Description

technical field [0001] The present invention relates to the field of mobile communication, more specifically, to a method for controlling cell reselection and a wireless communication terminal. Background technique [0002] With the development of mobile communication technology, most mainstream mobile communication network systems provide comprehensive network coverage in the form of cellular, and according to the 3GPP specification TS23.122, when the terminal is turned on, it will first select the registered public land mobile communication network (Registered Public Land Mobile Network, RPLMN), RPLMN is the network successfully registered by the terminal last time, if there is no RPLMN in the mobile phone or RPLMN is unavailable, the terminal will find an available public land mobile network (Public Land Mobile Network, PLMN) according to the specified order After finding the PLMN, the terminal will initiate a cell selection process. Once the terminal selects a "suitable"...

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Problems solved by technology

[0004] If this approach is followed, when the mobile device is currently in an environment with frequent level fluctuations and high interference, the level of the serving cell fluctuates greatly, and the adjacent cells in the monitoring set must constantly change and adjust, such as monitoring set cells The number of cells, the order of cell priority, etc., then the operations of measuring, synchronizing, and decoding BCCH channels for changing cells will be greatly increased, and at the same time, the energy consumption of mobile devices will also be greatly increased. Reduce standby time

[0005] Secondly, this approach does not consider other conditions in the cell reselection process, such as whether the measurement cell is accessible, whether the measurement cell belongs to the PLMN to which it belongs, and if the reselected target cell is set to prohibit access by the operator (or the location area cell Forbidden access) or the cell does not belong to its home network, when the terminal continuously tries to access, it needs to perform cell selection process every time, perform frame synchronization, decode BCCH broadcast information and other operations, frequent synchronous decoding operations will inevitably bring At the same time, the existing implementation methods face the problem of single measurement quality evaluation (either Ec / No or RSCP), and the hysteresis parameter (delivered by the network side) is not flexible.

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