DSL Line Mode Switching via Signaling Detection
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Solution Overview
Problem
Existing DSL power-saving mechanisms do not guarantee timely availability of required bandwidth for voice transmission and are limited to downward control, lacking external protocol information and flexibility in switching modes.
Innovation Solution
Implementing a method that allows DSL components to switch between operating modes based on signaling information, using recognition units to detect data transmission requirements and adjust power settings accordingly, ensuring efficient energy savings without delaying high data transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If DSL components are switched to energy-saving modes (L2/L3) to reduce power consumption, then energy efficiency is improved, but bandwidth availability for voice transmission is delayed
Solution Approach 1:
The patent applies preliminary action by detecting signaling information (SIP/ RTP protocols) before actual data transmission begins. When signaling information indicating voice transmission requirements is detected, the system proactively switches from energy-saving mode L3 to active mode L0 before the actual voice data arrives, ensuring bandwidth is ready in time. This prevents the delay that would occur if switching happened reactively after data arrival.
Solution Approach 2:
The patent implements feedback by continuously monitoring signaling information on the DSL line to determine when voice transmission is about to occur. The detection unit monitors for specific protocol patterns (SIP signaling, RTP data) and provides feedback to the control unit, which then adjusts the operating mode accordingly. This closed-loop feedback mechanism ensures the system responds appropriately to actual transmission needs while maintaining energy savings during idle periods.
2Device complexity
If autonomous DSL mechanism is used to regulate data transmission rate based on buffer filling level, then device complexity is reduced, but reliability of bandwidth provision for voice transmission is compromised
Solution Approach 1:
The patent introduces an intermediary detection unit that monitors signaling information between the network and the DSL components. This intermediary layer analyzes protocol-specific information (SIP headers, RTP markers) to determine voice transmission requirements, bridging the gap between the simple autonomous DSL mechanism and the need for reliable voice bandwidth provision. The detection unit acts as a mediator that translates signaling information into appropriate mode switching decisions.
Solution Approach 2:
The patent changes the control parameter from simple buffer filling level to protocol-specific signaling information analysis. Instead of relying solely on buffer status, the system monitors parameters such as SIP message types, RTP packet markers, and protocol headers to detect voice transmission requirements. This parameter change enables more reliable bandwidth provision while maintaining relatively simple device architecture.
3Device complexity
If DSL control mechanism works only in downward direction (downstream), then device complexity is minimized, but adaptability to upstream voice transmission requirements is limited
Solution Approach 1:
The patent applies universality by designing the detection unit to monitor signaling information in both downstream and upstream directions. The same detection logic and protocol analysis mechanisms work regardless of transmission direction, enabling the system to adapt to voice transmission requirements from either direction. The control mechanism becomes multi-functional, handling both downstream-initiated and upstream-initiated voice calls with the same architectural approach.
Data Source
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AI summary
The invention relates to a method for operating a DSL line (digital subscriber line) in a telecommunications network, wherein the DSL line is provided between a network-side access node device and a client-side connection device for transferring user data and signaling information, wherein the access node device, the connection device and the DSL line can be operated alternatively in a first operating mode or in a second or third operating mode, wherein the access node device, the connection device and the DSL line has a specified first data transfer rate in the first operating mode, wherein the access node device, the connection device and the DSL line has a specified second, reduced data transfer rate in the second operating mode, wherein the adjustment of the first operating mode in the absence of a momentary data transfer demand of an increased data transfer rate is provided for the case that - the access node device and the connection device and the DSL line are in the second operating mode and - the access node device and/or the connection device receives signaling information for building a predefined data connection requiring a data transfer demand having increased data transfer rate.