Communication Control Device Group ID Compression Multicast
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Solution Overview
Problem
Dynamic group management in networks faces challenges with scalability due to authentication and data delivery issues, particularly when dealing with a large number of nodes, as existing methods like unicast communication and multicast technology are inefficient.
Innovation Solution
A communication control device that uses group IDs and node IDs to perform dynamic group control through multicast or broadcast communication, incorporating a signature to prevent falsification and optimize node ID lists, allowing for efficient compression and reduced communication costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If unicast communication is used for group management, then authentication security is improved, but communication cost and processing time increase significantly with large number of nodes
Solution Approach 1:
The patent combines multiple unicast authentication operations into a single multicast authentication operation. The group manager sends one multicast authentication frame to authenticate all group members simultaneously, rather than performing separate unicast authentication with each node. This merging approach maintains authentication security while dramatically reducing communication overhead and processing time for large-scale groups.
Solution Approach 2:
The patent transitions from one-dimensional unicast communication (one-to-one) to multi-dimensional multicast communication (one-to-many). By using multicast addressing and group membership management, the system enables simultaneous communication with multiple nodes through a single channel, effectively adding a dimensional aspect to the communication model that scales efficiently with group size.
2Productivity
If multicast technology is used for group management, then communication efficiency is improved, but scalability and security issues arise with large number of nodes
Solution Approach 1:
The patent segments the group management process into distinct phases: group formation phase where secure unicast communication establishes initial group membership, and group operation phase where efficient multicast communication is used for authenticated members. This segmentation allows the system to leverage the security of unicast for critical authentication while using the efficiency of multicast for routine communication, achieving both scalability and security.
Solution Approach 2:
The patent performs preliminary authentication and group membership establishment through unicast communication before enabling multicast communication. Group members are pre-authenticated and registered with the group manager, and only authenticated members are added to the multicast group. This preliminary action ensures that subsequent multicast communication is secure and scalable, as the authentication overhead is paid once during group formation rather than repeatedly during communication.
3Adaptability or versatility
If dynamic group management is implemented, then flexibility is improved, but authentication overhead and processing complexity increase
Solution Approach 1:
The patent implements self-service mechanisms where group members automatically update their group membership information with the group manager when joining or leaving groups. The group manager automatically manages group membership tables and updates multicast group registrations without manual intervention. This self-service approach enables dynamic group management flexibility while reducing authentication overhead, as the automated processes eliminate manual configuration and reduce processing complexity.
Data Source
AI summary
According to an embodiment, a communication control device is connected to communication devices and includes a storage, a generator, and an output unit. The storage is configured to store group information containing a group ID of a group and device IDs of the communication devices belonging to the group. The generator is configured to generate compressed information in which the device IDs are compressed. The output unit is configured to output, when the group information is updated, to all communication devices identified by the device IDs included in the group information after updating and to a plurality of communication devices including one or more of the communication devices identified by the device IDs not included in the group information after updating, output information containing identification information for identifying the group after updating and compressed information in which the device IDs included in the group information after updating are compressed.