Contention-Based Preconfigured Uplink Resources With Fallback
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Solution Overview
Problem
Current communication systems, such as NR eMBB, eMTC, and NB-IoT, face challenges in providing higher data rate and reliability, lower latency, lower cost/complexity, and wider coverage, particularly for bursty or aperiodic traffic, where dedicated preconfigured uplink resources are not well-suited and lack mechanisms for contention resolution in NR-based IoT devices.
Innovation Solution
The implementation of contention-based shared preconfigured uplink resources (CBS PUR) with fallback mechanisms, where network nodes assign multiple resource configurations to devices, including a contention-based resource and a dedicated resource, allowing devices to switch to the dedicated resource if contention-based resource usage is unsuccessful, enabling efficient resource sharing and power-saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If contention-based shared preconfigured uplink resources are used, then resource efficiency and battery life are improved, but reliability deteriorates due to lack of contention resolution mechanisms
Solution Approach 1:
The patent segments the uplink resources into two distinct parts: contention-based shared resources for initial transmission and dedicated fallback resources for retransmission. This segmentation allows devices to first attempt efficient shared resource usage, and only switch to dedicated resources when contention occurs, thus maintaining both resource efficiency and reliability
Solution Approach 2:
The patent prepares dedicated fallback resources in advance before contention actually occurs. By pre-configuring these dedicated resources and providing fallback indication information to devices beforehand, the system eliminates the need for complex real-time contention resolution mechanisms, ensuring reliable retransmission while maintaining resource efficiency during normal operation
2Reliability
If dedicated preconfigured uplink resources are assigned to each device, then reliability is improved, but resource efficiency deteriorates due to underutilization during low traffic periods
Solution Approach 1:
The patent implements a dynamic resource allocation mechanism where devices can switch between contention-based shared resources and dedicated fallback resources based on actual transmission needs. During low traffic periods, devices use shared resources efficiently; when contention occurs or for delay-sensitive traffic, devices switch to dedicated resources, thus optimizing resource efficiency while maintaining reliability
3Productivity
If contention-based shared resources are used without fallback mechanisms, then resource efficiency is improved, but device complexity increases due to contention resolution requirements
Solution Approach 1:
The patent introduces fallback indication information as an intermediary mechanism that simplifies contention resolution. Instead of implementing complex contention resolution protocols, the network provides pre-configured dedicated fallback resources and indication information to devices. When contention occurs, devices simply switch to these pre-prepared dedicated resources based on the indication information, significantly reducing device complexity while maintaining resource efficiency
Data Source
AI summary
In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining, by a network node of a communication network, for assignment to at least one network device more than one resource configuration comprising a resource configuration for a contention based resource and a further resource configuration for a dedicated resource, wherein the further resource configuration is reserved as a fall back for a case where a data communication using the contention based resource is not successfully decoded by the network node; and communicating between the network node and the at least one network device information comprising the more than one resource configuration for use to communicate the data communication.