6LoWPAN Border Router Context Synchronization via Router Advertisement
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Solution Overview
Problem
The existing technologies for managing context information in extended 6lowpan fields lack a standardized mechanism to ensure consistency across multiple border routes, leading to inefficiencies in data packet forwarding and increased network load due to independent weight calculations and lack of integration with the neighbor discovery protocol.
Innovation Solution
A multi-source synchronization mechanism is implemented, where a border router adds an update option to the 6CO option to synchronize context information among border routers, using a version number and update bit to ensure consistency, and periodically releases updated context information through Router Advertisement messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple border routes are used in an extended 6lowpan field, then network coverage and routing flexibility are improved, but context information consistency becomes difficult to maintain
Solution Approach 1:
The patent implements a feedback mechanism where border routes periodically send Router Advertisement messages to announce their presence and exchange context information. This allows border routes to synchronize their context tables and maintain consistency across the extended network, resolving the contradiction between expanded coverage and maintained reliability.
Solution Approach 2:
The patent employs preliminary actions by having border routes pre-configure and announce their routing information before actual data transmission begins. The Router Advertisement messages are sent in advance to establish consistent context information across all border routes, ensuring reliability is maintained from the outset as the network expands.
2Reliability
If context information is frequently updated to maintain synchronization, then consistency is improved, but network load and bandwidth consumption increase
Solution Approach 1:
The patent implements periodic action through scheduled Router Advertisement messages that border routes send at predetermined intervals. This periodic announcement mechanism maintains context synchronization without requiring continuous updates, thereby reducing unnecessary network traffic and energy consumption while still ensuring consistency across the extended 6lowpan field.
Solution Approach 2:
The patent enables self-service by allowing border routes to autonomously manage their own context information and synchronization. Each border route independently sends its own Router Advertisement messages and maintains its context table without requiring centralized control, reducing overall network load while maintaining synchronization through distributed self-management.
3Reliability
If a standardized synchronization mechanism is implemented, then context consistency is improved, but protocol complexity increases
Solution Approach 1:
The patent applies universality by designing the synchronization mechanism to work within the existing IPv6 Router Advertisement framework. The same RA message structure used for standard routing also serves the additional function of context information synchronization in extended 6lowpan fields, avoiding the need for separate dedicated protocols and thus minimizing added complexity while ensuring consistency.
Data Source
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AI summary
An information processing method and system for an extended 6lowpan field are disclosed. The method includes: when a case of context information updating occurs in the extended 6lowpan field, triggering a multi-source synchronization mechanism, so as to accomplish a synchronization between context value information and time among a plurality of border routes; and at least one border route distributing the updated context information within the extended 6lowpan field. The information processing method for the extended 6lowpan field proposed in the embodiments of the present invention is completely based on the neighbor discovery protocol standard draft proposed by the IETF organization, which has stronger feasibility and extensive applicability; moreover, it can solve the problem of how to ensure the consistency of released context information in a case that there are a plurality of border routes within the extended 6lowpan field.