Backhaul Access Link Resource Allocation for 5G Interference Reduction
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Solution Overview
Problem
Current technologies lack an effective solution for coordinating resources between Backhaul and Access links in 5G networks, particularly in minimizing interference during spatial division multiplexing using the NR communication standard.
Innovation Solution
A resource allocation method and apparatus that involves communication nodes exchanging resource request and allocation information, including information about channel or signal resources, to ensure orthogonality between reference signals and control channels, thereby coordinating resources between Backhaul and Access links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If resources are allocated independently for Backhaul and Access links, then resource allocation simplicity is maintained, but interference between links increases
Solution Approach 1:
The patent merges resource allocation for Backhaul and Access links by having the gNB allocate resources for both links simultaneously. The gNB determines resource allocation information that includes both Backhaul link resources (for communication with relay nodes) and Access link resources (for communication with UEs), ensuring coordinated allocation across both links to minimize interference while maintaining allocation efficiency
2Object-generated harmful factors
If resource coordination between Backhaul and Access links is implemented, then interference is reduced, but resource allocation complexity increases
Solution Approach 1:
The gNB serves as an intermediary that coordinates resource allocation between Backhaul and Access links. The gNB receives resource allocation requests from relay nodes, determines appropriate resource allocation information that considers both Backhaul and Access link requirements, and sends this coordinated allocation information back to the relay nodes. This intermediary approach enables interference reduction through centralized coordination without requiring complex distributed coordination mechanisms
3Productivity
If spatial division multiplexing is used for Backhaul and Access links, then spectral efficiency is improved, but interference management difficulty increases
Solution Approach 1:
The system performs preliminary resource allocation and coordination before actual data transmission. The gNB determines resource allocation information that pre-coordinates Backhaul and Access link resources, including spatial parameters for SDM, before the relay nodes and UEs begin transmission. This preliminary coordination ensures that spatial division multiplexing can be efficiently implemented while interference is managed through pre-planned resource separation
Data Source
AI summary
Provided are a resource allocation method, a measurement method, a frequency domain resource determination method, a transmission method, and corresponding apparatuses and devices and a storage medium. The resource allocation method includes: sending by a first communication node, resource request information to a second communication node, where the resource request information includes first information; and/or receiving, by the first communication node, first resource allocation information sent by the second communication node, where the first resource allocation information includes second information, the first information and/or the second information includes information of a resource occupiable by a channel or signal between the first communication node and the second communication node and/or includes information of a resource occupiable by a channel or signal between the first communication node and one or more third communication nodes.