Proxy Host Terminal for Wireless Client Power Conservation
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Solution Overview
Problem
Client terminals in idle mode consume significant power to monitor paging channels, leading to reduced battery life and shorter standby times, as they periodically turn their high power communication interfaces on and off.
Innovation Solution
A proxy host terminal with a high power interface for long-range communication and a low power interface for short-range communication is used to listen for paging messages on behalf of the client terminal, allowing the client terminal to power down its high power interface and conserve energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the client terminal monitors paging channels by periodically turning its receiver On and Off, then it can detect incoming calls and system information, but it consumes significant power reducing battery life
Solution Approach 1:
The patent introduces a proxy host terminal as an intermediary device that monitors paging channels on behalf of the client terminal. The proxy receives paging messages from the network and forwards them to the client terminal via a low-power secondary interface, eliminating the need for the client terminal to periodically activate its high-power primary receiver while maintaining reliable paging message detection
2Speed
If the client terminal keeps its communication interface On to monitor paging channels, then it can immediately respond to incoming calls, but it reduces standby time between battery recharges
Solution Approach 1:
The proxy host terminal acts as a mediator that maintains the connection to the network and caches paging messages. When an incoming call is detected, the proxy immediately forwards the paging message to the client terminal through the low-power secondary interface, enabling fast response times without requiring the client terminal to keep its primary communication interface active
Solution Approach 2:
The system performs preliminary actions by having the proxy host terminal monitor and cache paging messages in advance. This allows the client terminal to remain in a low-power state while the proxy pre-receives and stores paging information, enabling immediate notification when a call arrives without requiring the client terminal to be actively listening
3Reliability
If the client terminal uses its primary communication interface to monitor paging channels, then it maintains reliable connection to the network, but it cannot conserve power during idle mode
Solution Approach 1:
The proxy host terminal serves as an intermediary that maintains the reliable network connection using its own communication resources. The client terminal can then use a low-power secondary interface to communicate with the proxy, significantly reducing energy consumption while the proxy handles the power-intensive network monitoring and message reception functions
Solution Approach 2:
The system segments the communication functions by separating the high-power network monitoring task (performed by the proxy host terminal) from the low-power client terminal operations. This segmentation allows the client terminal to offload the power-intensive paging channel monitoring to the proxy while maintaining network connectivity through the proxy's infrastructure
Data Source
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AI summary
A novel power conservation scheme is provided for conserving power in client terminals by using a proxy server. The client terminal, having a low-power communication interface and a high-power communication interface, may power down its high-power communication interface, to conserve power. Prior to shutting off its high-power communication interface, the client terminal may assign a host terminal to act as a proxy for the client terminal. The host terminal monitors the paging channels for the client terminal via a high-power communication interface. If the host terminal detects a paging message for the client terminal, it forwards at least a portion of the paging message to the client terminal via a low-power communication interface. Upon receipt of the paging message from the host terminal via its low-power communication interface, the client terminal may power up its high-power communication interface and directly respond to an access terminal that initiated the paging message.