Network Search Mode Segmentation for Wireless Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless electronic devices supporting multiple communication methods, such as SVLTE/SGLTE, face long network search times and slow recovery due to extensive scanning across multiple frequency bands, leading to increased power consumption and potential voice call drops.
Innovation Solution
Implementing a method in electronic devices with multiple modems and antennas to detect the current communication mode and search only for specific frequency bands corresponding to that mode, excluding unnecessary searches for other modes during booting, rebooting, or no-service events, thereby reducing network search time and preventing automatic conversion to less efficient modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the device performs extensive scanning across multiple frequency bands to support multiple communication methods, then the device can maintain compatibility with various networks, but the network search time increases and recovery becomes slow
Solution Approach 1:
The patent segments the frequency band searching process by dividing it into mode-specific search spaces. When SVLTE/SGLTE mode is detected, the device searches only in TDD-LTE and TDS-CDMA frequency bands. When CSFB mode is detected, the device searches only in FDD-LTE and WCDMA frequency bands. This segmentation eliminates the need to scan all frequency bands for all modes, thereby reducing network search time while maintaining adaptability to different communication methods.
2Reliability
If the device scans all frequency bands including 2G roaming frequencies, 3G and 4G designated frequencies, then the device can find any available network, but the scanning time and power consumption increase
Solution Approach 1:
The patent applies segmentation by dividing the frequency band search into mode-specific subsets. The controller determines the current communication mode and restricts the search to only the frequency bands relevant to that mode. This eliminates unnecessary scanning of unrelated frequency bands, reducing power consumption while maintaining reliable network connection by ensuring the device searches in the correct bands for the active mode.
Solution Approach 2:
The patent implements preliminary action by determining the communication mode before initiating the frequency band search. The controller detects whether the device is operating in SVLTE/SGLTE mode or CSFB mode, and based on this preliminary determination, configures the search parameters to include only the relevant frequency bands. This preliminary classification prevents wasted power consumption on scanning irrelevant bands while ensuring reliable network discovery in the appropriate bands.
3Adaptability or versatility
If the device uses SVLTE/SGLTE method with separate antenna and RF chip for each service, then voice and data services can be simultaneously supported, but the number of components increases and power consumption increases
Solution Approach 1:
The patent applies universality by enabling a single antenna and RF chip to serve multiple communication modes through software-controlled frequency band selection. The same hardware components are used for both SVLTE/SGLTE mode and CSFB mode, with the controller dynamically configuring which frequency bands to search based on the detected mode. This eliminates the need for separate dedicated hardware for each mode, reducing device complexity while maintaining the ability to simultaneously support voice and data services through appropriate mode selection.
Data Source
AI summary
A method and device for searching for a network in a wireless communication environment supporting a plurality of communication methods are provided. An example method to support Simultaneous Voice and LTE (SVLTE) and Circuit Switch-FallBack (CSFB) involves determining a communication mode when a booting or rebooting event or no-data service event occurs, and only searching for a signal related to a selected one of the communication modes, thereby reducing total scan time needed to access a network.