Residential Gateway Memory Pooling Access Control
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Solution Overview
Problem
Existing residential gateways and STB decoder devices face challenges in pooling memory spaces while maintaining public and private accessibility constraints, especially under latency constraints for audiovisual data recording and playback, and require a simple and cost-effective solution.
Innovation Solution
A residential gateway with a table for managing access rights to private memory spaces, capable of receiving and processing access commands, and ensuring only authorized devices modify the access rights table, allowing for memory space pooling without energy regulation issues, using link layer messages and the AoE protocol for efficient data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If memory spaces are pooled in the residential gateway, then memory resource utilization is improved, but access control complexity increases
Solution Approach 1:
The patent segments memory spaces into public and private categories, with private memory spaces further divided into individual user partitions. This segmentation allows the gateway to manage pooled memory resources while implementing fine-grained access control through the rights management table, resolving the contradiction between resource utilization and access control complexity.
Solution Approach 2:
The patent introduces an access rights management table as an intermediary data structure between the pooled memory spaces and accessing devices. This table acts as a mediator that automatically enforces access control rules based on device identifiers, simplifying the access control mechanism while maintaining security for pooled memory resources.
2Use of energy by moving object
If hard disk is deported from STB decoder to residential gateway, then energy efficiency is improved, but access latency may increase
Solution Approach 1:
The patent implements preliminary action by pre-configuring the access rights management table with authorized device identifiers and access permissions before actual memory access operations. This pre-establishment of access rules enables rapid authentication and reduces access latency when devices need to access the pooled memory spaces in the gateway.
Solution Approach 2:
The patent changes the operational parameters of the hard disk by relocating it from the STB decoder to the residential gateway, which remains permanently powered on. This parameter change (location and power state) improves energy efficiency by eliminating the need for frequent power cycling, while the access rights management system optimizes access latency through efficient authentication mechanisms.
3Adaptability or versatility
If access rights management table is updated freely, then adaptability is improved, but security is worsened
Solution Approach 1:
The patent implements a dynamic access rights management system where the rights management table can be updated during operation to accommodate new devices or changing access requirements. The system dynamically adjusts access permissions while maintaining security through authenticated update operations, resolving the contradiction between flexibility and security.
Data Source
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AI summary
The invention relates to a residential gateway (110) which has access to a memory space (132), comprising at least one private memory space (130) made available to at least one device (111; 112) connected to a local communication network (120). The residential gateway comprises: a table (140) for managing rights of access to the private memory space(s); means for receiving commands of access to the memory space and administrator commands for updating said table; means for updating said table, upon receipt of an administrator command from a predetermined device using an administrator module, and for ignoring any administrator command from another device; and means (150) for ignoring any command of access to said private memory space(s) when the command is received from a device that is not identified in said table.