Terminal Network Search Mode Adaptation for Roaming
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Solution Overview
Problem
Users experience prolonged network access times when roaming, as terminals often fail to quickly find compatible communication networks due to differences in standards between home and visited countries, leading to inefficient searching and poor user experience.
Innovation Solution
The method involves adding the WCDMA network search mode to the terminal's list when the SIM card belongs to an operator not supporting the WCDMA standard, allowing it to search for and register with WCDMA networks in the visited area before the no-service timer times out, even if other standards are not supported, thereby improving search efficiency and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal searches for communication networks using only the standards supported by the SIM card operator, then the terminal can avoid searching for incompatible networks, but the terminal fails to find available networks in visited countries with different standards, leading to prolonged access time
Solution Approach 1:
The terminal dynamically changes the search parameters by adding WCDMA network search mode to its list of search modes when roaming abroad, even though its SIM card operator does not support WCDMA. This parameter change enables the terminal to search for and access available networks in visited countries, resolving the contradiction between search reliability and access time.
2Productivity
If the terminal adds WCDMA network search mode to its search list while roaming, then the terminal can find and register with available WCDMA networks faster, but the terminal increases its search complexity and power consumption
Solution Approach 1:
The terminal dynamically adjusts its search mode list based on roaming status rather than maintaining a fixed configuration. When roaming is detected, the terminal automatically adds WCDMA search mode to its list; when not roaming, it maintains its original search configuration. This dynamic adjustment improves search efficiency during roaming while avoiding unnecessary complexity during normal operation.
Solution Approach 2:
The terminal performs preliminary detection of roaming status and proactively adds the appropriate search mode before network access is attempted. By detecting the roaming condition in advance and preparing the extended search list, the terminal avoids delays during the actual network access process.
3Adaptability or versatility
If the terminal searches for networks in FULL RAT mode, then the terminal can access any available network standard, but the terminal consumes more power and performs more extensive searching than necessary
Solution Approach 1:
The terminal applies partial action by selectively adding only the WCDMA search mode to its search list when roaming, rather than enabling all possible search modes. This partial extension of search capability provides the necessary adaptability to access available networks while avoiding the excessive power consumption that would result from searching all possible network standards simultaneously.
Data Source
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AI summary
A method for searching for a network and a terminal is provided. The method includes: adding a mode in which a terminal searches for a WCDMA network to a list of modes in which the terminal searches for communication networks, when a SIM card inserted in the terminal belongs to a first operator not supporting a WCDMA standard; searching for a first WCDMA network operated in a visited place when the terminal roams to the visited place, and residing in the first WCDMA network to acquire location information of the visited place; and registering in a second WCDMA network operated in the visited place, according to the location information of the visited place.