CMTS Channel Assignment by Subscribed Service Level
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Solution Overview
Problem
Subscribers often fail to achieve their full subscribed upstream or downstream bandwidth due to inadequate channel assignment during the registration process in cable modem systems, leading to suboptimal service performance.
Innovation Solution
Implement a system where the Cable Modem Termination System (CMTS) checks the subscribed service level of CPE devices and dynamically assigns them to channels capable of supporting the required bandwidth, using methods like dynamic channel change requests to move devices to higher bandwidth channels such as A-TDMA or S-CDMA if necessary, and periodically audits load balance groups to ensure optimal channel allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CMs/MTAs are directed to change channels to balance load, then channel load balancing is improved, but subscribers may still not achieve their full subscribed bandwidth due to inadequate channel assignment during registration
Solution Approach 1:
The CMTS performs preliminary channel assignment based on subscribed service levels during the registration process, proactively identifying and assigning CPE devices to appropriate channels before they experience performance degradation. This prevents the problem rather than reacting to it after load balancing is needed.
Solution Approach 2:
The system continuously monitors channel load conditions and subscribed service levels, using this feedback to dynamically adjust channel assignments. The CMTS audits load balance groups periodically and directs CPE devices to change channels based on real-time conditions, ensuring both load balancing and service level guarantees are maintained.
2Productivity
If dynamic channel change requests are sent to move devices to higher bandwidth channels, then service performance is improved, but system complexity increases
Solution Approach 1:
The CMTS automatically manages channel assignments by autonomously evaluating subscribed service levels against current channel conditions and directing CPE devices to appropriate channels. The system serves itself by making intelligent decisions without requiring manual intervention or complex external control mechanisms.
Solution Approach 2:
The system changes the parameter of channel assignment based on the parameter of subscribed service level. By evaluating service level parameters and matching them to appropriate channel parameters (bandwidth, load conditions), the system simplifies the decision-making process while improving service performance.
3Measurement precision
If periodic audits of load balance groups are performed, then channel allocation accuracy is improved, but processing overhead increases
Solution Approach 1:
The CMTS performs periodic audits of load balance groups at scheduled intervals rather than continuously, reducing processing overhead while maintaining accurate channel allocation. This periodic action balances the need for precision with the constraint of processing time and system resources.
Data Source
AI summary
Systems and methods can be operable to provide subscription service level based channel assignment for network devices. In some implementations, such systems and methods can operate to create service flow list for use in assigning channels to CPE devices (e.g., modems, eMTAs, STBs, etc.). Such systems and methods can assist in assigning CPE devices to channels that correspond to their subscribed service level, thereby facilitating delivery of the proper level of service.