Traffic Priority Control for Mixed One-Way and Round-Trip Links
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Solution Overview
Problem
Conventional communication control methods fail to accurately manage priority in systems where one-way and round-trip communication coexist, leading to suboptimal quality of service due to unnecessary priority changes in round-trip communication scenarios.
Innovation Solution
A control device that acquires request delay and priority information from wireless terminals, calculates congestion delay, and instructs relay devices to adjust traffic priorities to prioritize one-way communication over round-trip communication when congestion occurs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If priority control is performed based on one-way communication delay requirements, then one-way communication quality is improved, but round-trip communication may undergo unnecessary priority changes
Solution Approach 1:
The patent dynamically adjusts priority control strategies based on communication type detection. The control device determines whether traffic is one-way or round-trip communication and applies different priority management approaches accordingly, making the system adaptive rather than static
Solution Approach 2:
The patent applies different quality control measures to different communication types. One-way communication receives priority control based on delay requirements, while round-trip communication receives tailored control based on both delay requirements and traffic amounts, ensuring locally optimized quality for each communication scenario
2Ease of operation
If priority control is performed without considering communication type, then control simplicity is maintained, but communication quality accuracy deteriorates
Solution Approach 1:
The patent segments communication traffic into distinct categories (one-way communication and round-trip communication) and applies specific control rules to each segment. This segmentation enables precise quality control for each communication type while maintaining overall system manageability through clear categorization
3Productivity
If congestion control is implemented in wired sections, then network congestion is reduced, but system complexity increases
Solution Approach 1:
The patent performs preliminary classification of traffic types before applying congestion control measures. By determining whether traffic is one-way or round-trip communication in advance, the system can apply appropriate priority control strategies proactively, preventing congestion before it occurs rather than reacting to it
Solution Approach 2:
The patent implements feedback mechanisms where the control device monitors communication states and adjusts priority control accordingly. The system receives communication state information from base stations and wireless terminals, evaluates congestion conditions, and dynamically adjusts priority assignments to maintain optimal network performance
Data Source
AI summary
A control device in a communication system in which one-way communication and round-trip communication coexist, the control device includes: a request delay acquisition unit that, based on cooperation information obtained from traffic transmitted from a plurality of wireless terminals and indicating a communication state between the plurality of wireless terminals and a base station that performs wireless communication, acquires information regarding a request delay and information regarding a priority in the traffic for each piece of the traffic; a traffic-based congestion calculation unit that calculates a congestion delay in a wired section on the basis of the information regarding the request delay and the information regarding the priority acquired for each piece of the traffic by the request delay acquisition unit; and a priority change control unit that, in a case where congestion occurs or a total delay requirement is not satisfied on the basis of the congestion delay in the wired section calculated by the traffic-based congestion calculation unit, transmits, to a relay device that relays the traffic, a control signal including an instruction to change at least a priority of traffic of the round-trip communication such that the traffic of the one-way communication is preferentially transmitted.