Virtual Circuit Switching for Dynamic Wireless Resource Allocation
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Solution Overview
Problem
Conventional communication resource allocation schemes in wireless communication systems, such as Circuit Switching (CS) and Packet Switching (PS), face inefficiencies in resource utilization, particularly in VoIP services, where dedicated channels are underutilized during low data transmission periods and PS schemes require significant control information transmission.
Innovation Solution
The implementation of Virtual Circuit Switching (VCS) allocates dedicated channels to users when data is present and switches these resources to shared channels when data is absent, allowing for efficient use of communication resources by dynamically reallocating resources between users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated channel is allocated to a particular user in the CS scheme, then data transmission reliability is improved, but communication resource utilization deteriorates when data is not present
Solution Approach 1:
The patent applies dynamics by making the channel allocation flexible rather than fixed. The dedicated channel allocated to a user can be dynamically reassigned to other users when the original user has no data to transmit. This is achieved through a scheduling mechanism that checks data availability in each transmission interval and reallocates resources accordingly, transforming the static dedicated channel into a dynamic resource that adapts to actual transmission needs.
Solution Approach 2:
The patent implements universality by enabling the dedicated channel to serve multiple functions and multiple users. Instead of being dedicated to a single user exclusively, the channel can be used by the originally allocated user when data is present, and by other users when data is absent. This multi-functional approach allows the same physical resource to fulfill different purposes at different times, improving overall system efficiency.
2Speed
If a dedicated channel is allocated to a particular user, then data transmission speed is improved, but resource waste increases when data is absent
Solution Approach 1:
The patent applies discarding and recovering by temporarily discarding the dedicated channel allocation when the user has no data to transmit, and then recovering the allocation when data becomes available. The scheduling mechanism effectively 'discards' the dedicated channel assignment during idle periods and 'recovers' it when transmission needs arise, preventing resource waste while maintaining the capability for high-speed transmission when needed.
Solution Approach 2:
The channel allocation is made dynamic through continuous monitoring of data availability. The system transitions between states of dedicated allocation and shared allocation based on real-time conditions, ensuring that resources are not wasted during idle periods while maintaining fast transmission capability when data is present.
3Productivity
If the PS scheme is used to share system resources, then resource utilization is improved, but control information transmission overhead increases
Solution Approach 1:
The patent applies segmentation by dividing users into different groups: those with dedicated channel allocations and those using shared channels. This segmentation allows the system to reduce control information overhead for dedicated users while maintaining resource sharing benefits for others. The scheduling mechanism segments the control information requirements based on allocation type, reducing overall system overhead.
4Productivity
If a dedicated channel is allocated to a user, then transmission efficiency is improved, but adaptability to different users deteriorates
Solution Approach 1:
The patent makes the channel allocation dynamic rather than static. The same physical channel can be dynamically assigned to different users based on their data transmission needs in each interval. This dynamic approach maintains high transmission efficiency for active users while providing adaptability to accommodate different users at different times, resolving the contradiction between efficiency and flexibility.
Solution Approach 2:
The scheduling mechanism ensures continuous useful action by continuously monitoring data availability and continuously reallocating channels to users who have data to transmit. This continuous adaptation ensures that transmission efficiency is maintained for users with data while providing versatility to serve different users across time, eliminating idle resource periods.
Data Source
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AI summary
A method and apparatus using Virtual Circuit Switching (VCS) in a new scheme are provided for allocating and employing resources by combining Circuit Switching (CS) and Packet Switching (PS), in which a base station allocates resources of a dedicated channel using the CS to a user and then transmits data on the dedicated channel. When data is not transmitted to the user, the base station allocates the allocated dedicated channel resources for resources of a shared channel and transmits data of a different user. Therefore, system capacity can be increased and a waste of communication resources can be minimized in a wireless communication system for frequently transmitting a small amount of traffic that is sensitive to a delay time.