Selective EVDO and PPP Session Management for Hybrid Terminals

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Solution Overview

Problem

Current systems for CDMA 1×/EVDO hybrid access terminals lack the ability to selectively manage EVDO and PPP sessions, leading to inefficient use of network resources and battery consumption, as EVDO sessions are not always properly closed when PPP sessions are terminated, and vice versa.

Innovation Solution

Implementing a method to selectively tie EVDO and PPP sessions, ensuring that both sessions are closed only when the radio is turned off, and allowing one session to remain open while the other is closed to conserve network resources and reduce battery consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If EVDO and PPP sessions are always tied together, then session management is simplified, but network resources are wasted when one session should remain open while the other is closed

Engineering Contradiction:

Improvesession managementVSAvoidnetwork resource usage

Core Design Contradiction:

Ease of operationVSLoss of energy

Solution Approach 1:

The patent implements dynamic session tying where the coupling between EVDO and PPP sessions can change state. The system transitions from a static always-tied model to a dynamic model where sessions are tied only when necessary (e.g., when radio is turned off) and separated when one session should independently remain open, optimizing both management simplicity and resource efficiency.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of session coupling from a fixed state (always tied) to a variable state (conditionally tied). By introducing conditions such as radio power state and session type, the system adjusts the tying parameter dynamically, allowing optimal resource usage while maintaining operational simplicity where needed.

Inventive Principle:

Principle #35Parameter changes

2Loss of energy

If EVDO and PPP sessions are never tied together, then network resources are conserved, but sessions that should be closed together may not be properly managed

Engineering Contradiction:

Improvenetwork resource usageVSAvoidsession management consistency

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

The patent introduces conditional parameters (radio power state, session type) that change the coupling behavior between EVDO and PPP sessions. When the radio is turned off, the parameter changes to tie both sessions together for reliable cleanup. When radio remains on, the parameter allows independent session management for resource efficiency.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system dynamically adjusts the session tying relationship based on operational context. The coupling is activated only when reliability requires coordinated closure (radio off), and deactivated when independent management is appropriate (radio on), balancing resource conservation with session management consistency.

Inventive Principle:

Principle #15Dynamics

3Loss of energy

If both EVDO and PPP sessions are closed when radio is turned off, then network resources are released, but battery is consumed for unnecessary session management

Engineering Contradiction:

Improvenetwork resource releaseVSAvoidbattery consumption

Core Design Contradiction:

Loss of energyVSUse of energy by moving object

Solution Approach 1:

The patent uses the radio power state as a triggering parameter that changes session management behavior. When radio turns off, the parameter change triggers coordinated session closure to release network resources. When radio remains on, the parameter prevents unnecessary session closure, reducing battery consumption for session management operations.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system automatically determines when session closure is necessary based on radio state, eliminating the need for manual session management decisions. The self-service mechanism closes sessions only when the radio is turned off, avoiding unnecessary battery consumption while ensuring network resources are released when appropriate.

Inventive Principle:

Principle #25Self-service

4Loss of energy

If one session is closed while the other remains open, then resource efficiency is improved, but session management complexity increases

Engineering Contradiction:

Improveresource efficiencyVSAvoidsession management logic

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent manages complexity by using clear parameter changes (radio on/off state, session type) to determine session tying behavior. Rather than implementing complex algorithms, the system uses parameter-based rules that simplify the management logic while achieving resource efficiency through selective session closure.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS7492746B2Method and apparatus of selectively tying the opening and closing of EVDO and PPP sessions

Publication Date: 2009.02.17 MALIKIE INNOVATIONS LTD

AI summary

Method, and associated apparatus, for operating a hybrid access terminal operable in a CDMA 1×/EVDO hybrid communication session system. The hybrid access terminal is operable to communicate pursuant to an EVDO communication session and to a PPP communication session. The opening and closing of the communication sessions are independent of one another. Opening of one session does not require opening of another of the sessions. And, closing of one of the sessions does not require closing of the other of the sessions.