Method and terminal for inter-system cell reselection
A cell reselection and inter-system technology, applied in wireless communication, electrical components, etc., can solve problems such as increasing the probability of paging failure, consuming terminal power, and ping-pong cell reselection.
Active Publication Date: 2020-08-04
ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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Problems solved by technology
[0004] However, parameter settings related to cell reselection between the current TD-SCDMA network and GSM network often lead to the occurrence of ping-pong cell reselection problems, that is, at the edge of the TD-SCDMA network, terminals often Frequent reselection between SCDMA network and GSM network
This will greatly consume the power of the terminal and increase the probability of paging failure
Method used
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[0029] First refer to the following figure 1 A method for inter-system cell reselection according to an exemplary embodiment of the present invention is introduced in detail. It should be noted that, unless otherwise stated, the cell reselection scheme supported by the terminal according to the present invention specifically indicates that cell reselection is performed by queuing multiple candidate cells with specific metrics (e.g., cell signal strength and signal quality). District re-election plan. Specifically, this cell reselection scheme refers to that when a terminal needs to perform a cell reselection operation, if there are several candidate cells that all meet predetermined conditions, then based on the specific metric (such as signal strength and / or signal quality) Queue the several candidate cells, and select the optimal candidate cell for reselection based on the queuing result.
[0030] Such as figure 1 As shown, a method 100 for inter-system cell reselection a...
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The present invention provides a different system cell reselection method implemented by a terminal. The method comprises the steps of when the terminal is in a GSM cell, determining whether a current system parameter about the GSM cell and a TD-SCDMA cell cause the different system frequent cell reselection; if the current system parameter about the GSM cell and the TD-SCDMA cell cause the different system frequent cell reselection, using the sum of a current measurement threshold used for starting the measurement to the GSM cell in the TD-SCDMA cell and a reselection hysteresis value as a reselection threshold used for reselecting from the GSM cell to the TD-SCDMA cell, and carrying out the reselection from the GSM cell to the TD-SCDMA cell; if the current system parameter about the GSM cell and the TD-SCDMA cell does not cause the different system frequent cell reselection, using a current reselection threshold for reselecting from the GSM cell to the TD-SCDMA cell as the reselection threshold used for reselecting from the GSM cell to the TD-SCDMA cell, and carrying out the reselection from the GSM cell to the TD-SCDMA cell.
Description
technical field [0001] The present invention relates to a method and terminal for different-system cell reselection, and more specifically, to a different-system cell especially suitable for TD-SCDMA (Time Division Synchronous Code Division Multiple Access) networks and GSM (Global System for Mobile Communications) networks The method and terminal of reselection. Background technique [0002] Compared with mature 2G (second generation) wireless networks, especially GSM networks, 3G (third generation) wireless networks, especially TD-SCDMA networks, as an emerging technology, the construction of its infrastructure must be A gradual and continuous improvement process. In a short period of time, it is impossible for 3G networks to completely replace 2G networks. Because of its large scope and high-quality coverage, the 2G network can make up for the small coverage of the current 3G network, so it will inevitably coexist with the 3G network for a long period of time in the fut...
Claims
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IPC IPC(8): H04W36/14
CPCH04W36/14
Inventor 常桂明宋红萍
Owner ERICSSON (CHINA) COMMUNICATION COMPANY LTD