Wireless Flow Control Bypass for Always-On Mobile Stations
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Solution Overview
Problem
In wireless communication networks, always-on mobile stations face service outages or increased air interface messaging when flow control processes are applied, particularly for e-mail and push-type applications that do not use PPP payload compression, leading to inefficiencies and resource wastage.
Innovation Solution
Implementing a method to bypass the flow control process for mobile stations with always-on connections, such as those using Point-to-Point Protocol (PPP) sessions for e-mail applications, and applying flow control only when necessary based on data usage patterns or compression methods, allowing mobile stations to control flow control usage through vendor-specific packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If flow control process is applied to always-on mobile stations, then air interface capacity is saved by allowing PDSN to resynchronize compression state, but service outages occur or increased air interface messaging is required
Solution Approach 1:
The patent applies different flow control treatments to different mobile stations based on their service characteristics. Always-on mobile stations with PPP sessions are excluded from flow control, while other mobile stations receive standard flow control treatment. This localized differentiation resolves the contradiction by applying flow control benefits only where appropriate without causing service outages.
Solution Approach 2:
Instead of applying flow control universally to save air interface capacity, the patent inverts the approach by explicitly excluding always-on mobile stations from flow control. This reversal prevents the service outages that would otherwise occur, while still allowing flow control to be applied to other mobile stations for air interface capacity savings.
2Loss of information
If flow control process is applied to always-on mobile stations with PPP sessions, then compression state resynchronization is achieved, but PPP connection is torn down without mobile station knowledge
Solution Approach 1:
The patent extracts always-on mobile stations with PPP sessions from the universal flow control process. By identifying and removing these specific mobile stations from flow control application, the patent prevents PPP connection teardown while maintaining flow control benefits for other mobile stations. The extraction is based on detecting the always-on characteristic and PPP session status.
3Loss of energy
If flow control process is applied to mobile stations performing application layer compression, then air interface capacity is saved, but service outage or increased messaging occurs
Solution Approach 1:
The patent applies local quality differentiation by identifying mobile stations that perform application layer compression (such as e-mail applications) and excluding them from flow control. This localized exclusion prevents service outages and messaging increases for these specific mobile stations while maintaining flow control for others, thereby preserving data delivery continuity without sacrificing air interface capacity benefits elsewhere.
Data Source
AI summary
Methods and apparatus for controlling wireless network operations associated with a flow control process which terminates data communications to a mobile station based on an out-of-coverage condition between the mobile station and a wireless communication network. In the wireless communication network, an indication is identified which indicates whether a mobile station utilizes an always-on connection for a data service. Based on the indication indicating that the mobile station utilizes the always-on connection, the flow control process is bypassed. Otherwise, the flow control process is performed. The always-on connection may be utilized for an e-mail application for the mobile station and involve a Point-to-Point Protocol (PPP) session.