CMTS Scheduling Based on Wireless Base Station MIMO Capacity
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Solution Overview
Problem
Existing cable modem termination systems (CMTS) lack coordination with wireless base stations implementing massive MIMO, leading to inefficient and untimely data transmission, which degrades the quality of service and data throughput.
Innovation Solution
The CMTS dynamically adjusts data transmission schedules based on wireless base station MIMO information, including antenna and beam counts, to allocate time slots proportionally, thereby optimizing data transfer to cable modems connected to wireless base stations with varying MIMO capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the CMTS uses a fixed data transmission schedule for all cable modems, then the scheduling is simple and stable, but the data transmission efficiency deteriorates when serving wireless base stations with different MIMO capabilities
Solution Approach 1:
The CMTS dynamically adjusts the data transmission schedule based on received MIMO information from wireless base stations. The scheduler modifies time slot allocations in real-time according to the MIMO capabilities (antenna count, beam count) of each base station, transforming a static scheduling system into an adaptive one that optimizes data transmission efficiency for each base station's specific capabilities
Solution Approach 2:
The patent applies differentiated scheduling strategies to different cable modems based on their connected wireless base station's MIMO capabilities. Each cable modem receives a customized time slot allocation proportional to its base station's antenna and beam counts, rather than a uniform allocation. This local customization optimizes throughput for each link while maintaining overall system coordination
2Loss of time
If the CMTS coordinates data transmission based on MIMO information, then the data transmission timeliness improves, but the coordination complexity increases
Solution Approach 1:
The CMTS receives MIMO information from wireless base stations in advance of data transmission scheduling. This preliminary acquisition of base station capabilities (antenna counts, beam counts) allows the CMTS to pre-calculate optimal time slot allocations before actual data transmission begins, ensuring timely delivery without requiring complex real-time adjustments during active transmission
Solution Approach 2:
The system implements a feedback mechanism where wireless base stations report their MIMO capabilities (number of antennas, number of beams) to the CMTS. The CMTS uses this feedback information to adjust and optimize the data transmission schedule, creating a closed-loop coordination system that adapts to actual base station capabilities while maintaining manageable complexity through structured information exchange
3Productivity
If more time slots are allocated to cable modems connected to base stations with more antennas, then the data throughput increases, but the scheduling fairness deteriorates
Solution Approach 1:
The patent changes the scheduling parameter from uniform time slot allocation to proportional allocation based on MIMO capabilities. The number of time slots assigned to each cable modem is directly proportional to the antenna count and beam count of its connected wireless base station. This parameter transformation enables the system to adapt scheduling flexibility to match the actual data processing capacity of each base station, optimizing throughput while maintaining fair resource distribution
Data Source
AI summary
The presentation invention relates to methods and apparatus for coordinating the transmission of data in a communications network. An exemplary method in accordance with an embodiment of the present invention includes the steps of: transmitting data from a cable modem termination system to a wireless base station receiving, at a cable modem termination system (CMTS), wireless base station multiple input multiple output (MIMO) information; and determining, at the CMTS, a data transmission schedule for transmitting data to a plurality of cable modems connected to the CMTS based on the received wireless base station MIMO information.