Ghost Entities for Proactive Wireless Handoff Resource Allocation
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Solution Overview
Problem
Conventional mobile networking protocols, such as Mobile IP, face delays and information losses due to the reactive allocation of communication resources during handoffs in wireless communications, especially when mobile nodes move between foreign agents, leading to dropped data packets and prolonged setup times.
Innovation Solution
The introduction of 'ghost-entities' – ghost-mobile nodes and ghost-foreign agents – that proactively allocate communication resources by predicting the future location and state of mobile nodes, allowing for preemptive setup and resource allocation before the node arrives in the new coverage area, thereby reducing registration overhead and packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If reactive resource allocation is used during handoffs, then network architecture simplicity is maintained, but handoff delays increase and packet loss occurs
Solution Approach 1:
The system performs preliminary actions by predicting the mobile node's future location and proactively allocating communication resources before the handoff actually occurs. The ghost-mobile node is created in advance at the predicted location, and resources are reserved beforehand, eliminating the need for reactive resource allocation during the handoff process.
Solution Approach 2:
The system segments the handoff process into distinct phases: prediction phase (determining future location), preparation phase (creating ghost-mobile node and allocating resources), and execution phase (actual handoff). This segmentation allows resource allocation to occur independently in advance, decoupling it from the critical handoff timing.
2Ease of operation
If reactive resource allocation is used during handoffs, then system operation simplicity is maintained, but packet loss increases
Solution Approach 1:
Resources are allocated and ghost-mobile nodes are created in advance before the mobile node actually needs them. This preliminary resource preparation ensures that when the handoff occurs, communication can continue without interruption, preventing packet loss while maintaining operational simplicity.
Solution Approach 2:
The system creates a buffer or cushion by pre-allocating resources and creating ghost-mobile nodes before handoff is needed. This cushion ensures that even if the actual handoff timing varies, resources are already in place to prevent packet loss, providing a safety margin against communication disruptions.
3Loss of time
If proactive resource allocation with prediction is implemented, then handoff delay is reduced, but system complexity increases
Solution Approach 1:
The ghost-mobile node acts as an intermediary between the mobile node and the foreign agents. It simplifies the complexity by handling resource allocation and handoff coordination centrally, allowing the actual handoff to proceed quickly without complex real-time negotiations between multiple network entities.
4Reliability
If proactive resource allocation is implemented, then communication continuity is improved, but resource management complexity increases
Solution Approach 1:
The ghost-mobile node autonomously manages resource allocation and handoff coordination without requiring complex centralized control. It self-services by predicting its own needs, creating itself in advance, and managing its own resource allocation, thereby improving communication continuity while keeping resource management relatively simple.
Data Source
AI summary
A system for communication between a mobile node and a communications network is provided for use with a communications network having one or more communications network nodes that define a foreign agents and that communicate with the mobile node in a predefined region. The system includes a ghost-foreign agent that advertises a foreign agent so that the mobile node is aware of the foreign agent when the mobile node is located outside the predefined region. The system further includes a ghost-mobile node that signals the foreign agent in response to the foreign agent advertising and based upon a predicted future state of the mobile node.