NR-LTE Resource Coordination via Bitmap Signaling
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Solution Overview
Problem
Current proposals and agreements do not support efficient and effective resource coordination between NR and LTE base stations, which is necessary for coexistence and backwards compatibility in wireless communication systems.
Innovation Solution
A method and apparatus for radio access network nodes to identify and communicate resources for interference protection, using parameters such as bitmaps and numerologies, to enable flexible allocation and coordination of resources between NR and LTE systems, even when supported by different base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource coordination methods are implemented between NR and LTE base stations, then interference protection and coexistence are improved, but system complexity and implementation difficulty increase
Solution Approach 1:
The patent changes the representation parameters of resource information from detailed time-frequency resource indications to compact parameter sets including bitmaps and numerology indicators. This parameter transformation enables efficient resource coordination while reducing signaling overhead and implementation complexity
Solution Approach 2:
The patent creates a universal resource coordination mechanism that works across different RAN node types (NR gNB, LTE eNB) and different numerologies. The parameter-based indication method provides multi-functional capability to handle various resource coordination scenarios including intra-RAT and inter-RAT coordination
2Manufacturing precision
If detailed resource indication methods are used, then resource allocation precision is improved, but signaling overhead and processing complexity increase
Solution Approach 1:
The patent transforms detailed resource allocation information into compact parameter representations including bitmaps for time-domain patterns and numerology indicators. This parameter compression maintains resource allocation precision while significantly reducing signaling overhead between base stations
Solution Approach 2:
The patent uses bitmap patterns to represent recurring resource allocation templates. Instead of signaling each resource allocation individually, the system copies and applies these pattern templates across multiple resource units, reducing signaling overhead while maintaining precise resource control
Data Source
AI summary
A communication system is disclosed in which an NR radio access network (RAN) node identifies resources, that the NR RAN node is to use for transmissions, for protection from interference from another RAN node. The NR RAN node sends, to the other RAN node, information indicating the identified resources for protection from interference. The information indicating the identified resources comprises a list of parameters, typically including resource bitmaps, based on which the other RAN node is able to determine the resources for protection from interference.