Overlapping Scheduling Resource Allocation in Cellular IoT
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Solution Overview
Problem
Existing network capacities are reduced due to inefficient resource allocation in Cellular Internet of Things (CloT) systems, where the quantity of repetitions for scheduling resources is greater than the optimal value, leading to wasted resources and reduced network efficiency.
Innovation Solution
An access network device calculates the overlapping area of scheduling resources for multiple terminals based on their respective modulation and demodulation capabilities, allowing for the sharing of resources without affecting communication reliability, thereby optimizing resource allocation and improving network capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the quantity of repetitions is increased to ensure transmission reliability, then communication reliability is improved, but scheduling resource consumption increases and network capacity is reduced
Solution Approach 1:
The patent merges scheduling resources of multiple terminals by allowing their repetition resources to overlap. The access network device calculates overlapping areas between scheduling resources of different terminals and enables resource sharing in these overlapping regions, thereby reducing total resource consumption while maintaining transmission reliability through HARQ combination.
Solution Approach 2:
The patent changes the parameter of repetition quantity from fixed protocol-defined values to dynamically calculated values based on actual channel conditions and terminal capabilities. The access network device calculates optimal repetition quantities and overlapping areas according to demodulation capabilities and channel quality, allowing flexible adjustment between reliability and resource consumption.
2Area of stationary object
If protocol-defined repetition quantities are used to ensure deep coverage, then coverage capability is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent introduces dynamic resource allocation where the access network device continuously calculates optimal repetition quantities and overlapping areas based on real-time channel conditions and terminal demodulation capabilities. This dynamic adjustment allows the system to adapt to changing coverage requirements while optimizing resource usage, unlike fixed protocol-defined repetition quantities.
Solution Approach 2:
The patent applies different repetition quantities and overlapping areas to different terminals based on their specific demodulation capabilities and channel conditions. Each terminal receives customized resource allocation in its local context rather than a uniform protocol-defined allocation, improving overall resource efficiency while maintaining adequate coverage.
3Reliability
If non-overlapping scheduling resources are allocated to different terminals, then interference between terminals is reduced, but resource utilization efficiency decreases
Solution Approach 1:
The patent merges scheduling resources of multiple terminals by allowing their repetition resources to overlap in calculated overlapping areas. The access network device determines that terminals can share resources in these overlapping regions without significant interference, thereby improving resource utilization efficiency while maintaining transmission reliability through HARQ combination at the receiver.
Data Source
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AI summary
Embodiments of this application disclose a resource allocation method, a device, and a system, and relate to the field of communications technologies, to improve network capacities. A specific solution is as follows: obtaining, by an access network device, a quantity of repetitions M and an MCS order that are of a scheduling resource of a first terminal, and a quantity of repetitions N and an MCS order that are of a scheduling resource of a second terminal; calculating an overlapping area of a first total scheduling resource based on the quantity of repetitions and the MCS order that are of the scheduling resource of the first terminal, and calculating an overlapping area of a second total scheduling resource based on the quantity of repetitions and the MCS order that are of the scheduling resource of the second terminal; determining a maximum overlapping area of the first total scheduling resource based on the overlapping area of the first total scheduling resource and the overlapping area of the second total scheduling resource; and allocating, to the second terminal, N consecutive scheduling resources overlapping with the first total scheduling resource, where an overlapping area is less than or equal to the maximum overlapping area. The embodiments of this application are used in a resource allocation process.