Semi-Persistent Scheduling Resource Allocation for 5G Beam Management
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Solution Overview
Problem
Conventional beamforming systems face challenges in efficiently updating resource allocations due to frequent changes in TX and RX beams caused by user equipment movement, which defeats the purpose of semi-persistent scheduling (SPS) in ensuring consistent resource allocation.
Innovation Solution
A method and apparatus for allocating resources based on SPS that considers beam feedback information from both the base station and user equipment, allowing for dynamic adjustment of resource allocations when beam changes occur, thereby maintaining efficient resource utilization without frequent updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If beamforming is used to address propagation loss on ultra-high frequency bands, then signal directivity and propagation distance are improved, but resource allocation stability deteriorates due to frequent beam changes caused by user equipment movement
Solution Approach 1:
The patent applies dynamics by making the resource allocation adaptive to beam changes. The base station determines whether to maintain or update SPS resource allocations based on current beam information, allowing the system to dynamically adjust resource allocation stability according to actual beam conditions rather than using a fixed allocation scheme
Solution Approach 2:
The patent uses feedback mechanisms where the base station receives beam information from user equipment and uses this feedback to determine resource allocation updates. The base station compares current beam information with previously used beam information to decide whether to maintain existing SPS resource allocations or trigger updates, creating a closed-loop control system
2Stability of the object's composition
If semi-persistent scheduling is used to ensure consistent resource allocation, then resource allocation stability is improved, but the ability to adapt to beam changes deteriorates
Solution Approach 1:
The patent transforms the static SPS resource allocation into a dynamic system by introducing beam change detection mechanisms. The base station continuously monitors beam information and selectively updates resource allocations only when beam changes occur, making the system adaptable while maintaining stability during unchanged conditions
Solution Approach 2:
The patent changes the parameter of resource allocation by comparing current beam information with previously used beam information. When parameters (beam information) change, the resource allocation parameters are updated accordingly, allowing the system to adapt to beam changes while maintaining stability when parameters remain constant
3Adaptability or versatility
If frequent resource allocation updates are performed to track beam changes, then adaptability to beam changes is improved, but system overhead and complexity increase
Solution Approach 1:
The patent applies partial action by performing resource allocation updates only when necessary (when beam changes are detected) rather than continuously. This selective updating approach reduces system overhead and complexity while maintaining adequate adaptability to actual beam changes
Solution Approach 2:
The patent extracts the essential function of adapting to beam changes by using beam information comparison to trigger resource allocation updates only when needed. This separates the necessary adaptability function from unnecessary continuous updates, reducing system overhead while maintaining adaptability
Data Source
AI summary
The present disclosure relates 5G or pre-5G communication systems for supporting higher data transmission rate than those by LTE or other post-4G communication systems. According to an embodiment of the present disclosure, a method for allocating a resource in a communication system includes determining a beam to be used for data communication between a UE and the base station based on beam feedback information from the UE. The method also includes releasing resource allocation for a beam used previously depending on whether the determined beam is changed from the previously used beam, allocating a resource for the determined beam, and transmitting information related to the resource allocation for the determined beam to the UE.