DSLAM Modem Access Control via Type Identification
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Solution Overview
Problem
Current broadband access technologies, such as xDSL, face issues with users' Modems being unable to function normally due to lack of operator authentication and incompatible dynamic spectrum management, leading to interference and security concerns.
Innovation Solution
A method and device for processing access control in DSLAMs that establish a corresponding relationship between Modem types and access strategies, identifying the Modem type, and controlling network access based on predetermined strategies, including frequency adjustment, link establishment, or prohibition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If service level based control is used to prevent unauthorized Modems from accessing the network, then network security is improved, but authorized Modems cannot function normally due to lack of configuration
Solution Approach 1:
The patent changes the control parameter from service level to Modem type identification. By identifying specific Modem types and applying type-specific access strategies, the system can differentiate between unauthorized Modems (which should be blocked) and authorized but unconfigured Modems (which should be allowed with specific configurations). This parameter change resolves the contradiction by enabling selective control that maintains security while restoring functionality.
2Ease of operation
If all Modems are allowed to access the network without authentication, then ease of operation is improved, but network security and spectrum interference problems worsen
Solution Approach 1:
The patent implements preliminary action by establishing a correspondence relationship between Modem types and access strategies before actual network access occurs. The DSLAM pre-configures access rules for different Modem types, allowing authorized Modems to connect smoothly while automatically blocking unauthorized ones. This preliminary configuration maintains ease of operation for legitimate users while ensuring network security.
3Object-affected harmful factors
If frequency is fallen for Modems not supporting dynamic spectrum management, then spectrum interference is reduced, but service quality and bandwidth availability deteriorate
Solution Approach 1:
The patent applies local quality by implementing different access strategies for different Modem types rather than a uniform approach. For Modems not supporting dynamic spectrum management, the system applies frequency falling locally to that specific Modem type while allowing other Modems to operate at full bandwidth. This localized treatment reduces spectrum interference for incompatible devices without degrading service quality for compatible devices.
Data Source
AI summary
The disclosure provides a method and device for processing access control, and a digital subscriber line access multiplexer, and the method includes that: a corresponding relationship between a type of a Modem and an access strategy for the Modem to access a network is established; the type of the Modem which requests to access the network is identified; the access strategy for the Modem to access the network is determined according to the identified type of the Modem and the corresponding relationship; and the Modem to access the network is controlled according to the determined access strategy. The disclosure solves a problem in related art of a situation in which the Modem cannot be used normally because the Modem is controlled based on a service level, so that accesses of different types of Modems can be controlled according to the established strategy.