Local SIP Agent Offloads Signaling to Reduce Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communications, particularly in LTE networks, the persistent wake-up of the application processor (AP) to handle SIP signaling in idle mode significantly impacts power consumption and battery life, as it is required for keep-alive messages and periodic SIP operations, necessitating a solution to reduce power usage without compromising network connectivity.
Innovation Solution
Implementing a local SIP agent within the wireless modem to handle SIP-related mechanisms, such as keep-alive messages and periodic updates, allowing the AP to remain in sleep mode and reducing the need for frequent wake-ups, thereby offloading SIP functionality from the AP to the modem.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the application processor remains awake to handle SIP signaling in idle mode, then network connectivity and SIP operations are maintained, but power consumption increases significantly
Solution Approach 1:
The patent divides the processor into two functional parts: an application processor (AP) that can sleep, and a modem component that remains active to handle SIP signaling. This segmentation allows the power-intensive AP to be powered down while the lower-power modem maintains network connectivity and handles keep-alive messages, directly resolving the contradiction between maintaining connectivity and reducing power consumption.
Solution Approach 2:
The modem acts as an intermediary between the sleeping application processor and the network. It receives and processes SIP signaling messages, including keep-alive messages, on behalf of the AP, and can wake the AP only when necessary. This intermediary role allows the system to maintain network presence and connectivity while the AP remains in low-power state, resolving the power consumption issue.
2Duration of action of moving object
If the application processor powers down components in idle mode, then battery life is extended, but SIP signaling处理能力 is lost
Solution Approach 1:
By segmenting SIP signaling handling functionality from the application processor to the modem, the system enables the AP to power down non-essential components during idle mode while the modem continues to handle SIP operations. This extends battery life without sacrificing SIP signaling capability, as the modem maintains the necessary functionality independently.
Solution Approach 2:
The modem is equipped with the capability to autonomously handle SIP signaling operations, including processing keep-alive messages and maintaining network registration, without requiring the application processor to be active. This self-service capability allows the AP to remain in low-power state while SIP functionality is preserved, extending battery life without operational compromise.
Data Source
AI summary
Systems and methods are provided for reducing power consumption in a mobile device having a Internet Protocol (IP) multimedia subsystem (IMS) framework for supporting, e.g., Voice over Long Term Evolution (VoLTE), IP Voice over High Speed Packet Access (VoHSPA), and Rich Communication Suite (RCS) features. To support such functionality in a mobile device while reducing power consumption, a local Session Initiation Protocol (SIP) agent is implemented in, e.g., a wireless modem, of the mobile device to which SIP-related signaling can be redirected, and at which SIP-related processing can be performed when an application processor (AP) Of the mobile device is in sleep mode, thereby negating a need to wake up the AP to handle such functionality.