Semi-Persistent Scheduling for Multi-Service Wireless Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face inefficiencies in scheduling resources for wireless devices (WDs) that need to handle multiple services with different reliability and transmission characteristics, particularly in scenarios requiring ultra-reliable and low latency communication (URLLC).
Innovation Solution
A method and system that allocate a periodic or semi-static scheduled resource, such as semi-persistent scheduling (SPS) or configured grant (CG), to a wireless device for use in communicating with multiple services. This allocation is based on estimating packet arrivals from each service, allowing for flexible periodicity settings and utilization of repetition resources to transmit data across multiple Transport Blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SPS configurations are allocated to support multiple services with different reliability requirements, then service coverage and adaptability are improved, but resource usage efficiency deteriorates due to resource fragmentation and waste
Solution Approach 1:
The patent implements a universal SPS resource pool that can dynamically serve multiple services with different reliability requirements. Instead of dedicating separate SPS configurations to each service, the system creates a shared resource pool that any service can utilize based on its current needs, thereby improving resource usage efficiency while maintaining service coverage.
Solution Approach 2:
The patent merges multiple service-specific SPS configurations into a single unified SPS resource pool. By combining previously separate resource allocations into one shared pool, the system eliminates resource fragmentation and enables more efficient utilization of wireless resources across multiple services with varying reliability requirements.
2Adaptability or versatility
If multiple SPS configurations are used to accommodate different service requirements, then service adaptability is improved, but device complexity increases due to multiple configurations and parameters to manage
Solution Approach 1:
The patent introduces a universal SPS resource pool that serves multiple services through a single configuration framework. This unified approach allows the system to maintain adaptability to different service requirements while significantly reducing the complexity of managing multiple separate configurations and their associated parameters.
3Reliability
If separate SPS allocations are made for each service, then service-specific reliability requirements are met, but resource efficiency deteriorates due to inability to share resources
Solution Approach 1:
The patent combines separate service-specific SPS allocations into a shared resource pool while maintaining mechanisms to ensure each service receives the reliability it requires. This merging enables resources to be dynamically shared among services based on current demands, improving overall resource efficiency while preserving service-specific reliability guarantees.
Solution Approach 2:
The patent implements dynamic resource allocation within the shared SPS resource pool, where resources are automatically adjusted based on real-time service requirements. This dynamic approach allows the system to maintain service-specific reliability levels while optimizing overall resource utilization, as resources can be flexibly reallocated according to changing service demands.
Data Source
AI summary
A method, system and apparatus are disclosed for more fully utilizing a periodic or semi-static scheduled resource, including the repetition resource. In accordance with various embodiments, a network node is configured to allocate a periodic or semi-static scheduled resource to a wireless device (WD) for use in communication for at least two services having different reliability or transmission characteristics. The periodic or semi-static scheduled resource may be allocated by estimating a packet arrival from each of the WD services or in proportion to a services' priority. A periodicity of the resource may be set to a periodicity of an ultra-reliable and low latency communication (URLLC) packet arrival periodicity of a URLLC stream. A repetitious configured grant (CG) can be utilized for additional services or throughput gain. The spared periodic or semi-static scheduled resource may also be allocated for a retransmission of failed packets from a service.