Offloading Data Traffic to Local Wireless Nodes
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Solution Overview
Problem
Wireless access service providers face challenges in meeting capacity demands in regions with high user equipment density, as existing solutions like small cells require complex network configurations and increased signaling overhead.
Innovation Solution
Implementing a local wireless access network node that offloads user plane data to small cells while maintaining control plane data communication with the macro cell, simplifying the design of local wireless access network nodes and reducing signaling complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If small cells are deployed to increase data communication capacity in high-density regions, then data throughput is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent introduces a gateway node as an intermediary between the core network and local wireless access network nodes. This gateway node simplifies the network architecture by providing a standardized interface, thereby reducing the complexity of deploying and managing small cells in high-density regions while maintaining enhanced data communication capacity.
2Productivity
If small cells are deployed to increase data communication capacity, then data throughput is improved, but signaling overhead in the core network increases
Solution Approach 1:
The gateway node acts as a mediator that filters and manages signaling between the core network and multiple local wireless access network nodes. This reduces the signaling overhead in the core network by handling local signaling matters at the gateway level, while still enabling high data communication capacity through the distributed small cell architecture.
Solution Approach 2:
The patent segments the network architecture into distinct functional layers: the core network, the gateway node layer, and the local wireless access network node layer. This segmentation allows signaling overhead to be distributed and managed at appropriate levels, reducing the burden on the core network while maintaining high data throughput capacity.
3Adaptability or versatility
If local wireless access network nodes are designed with full functionality, then adaptability is improved, but device complexity and cost increase
Solution Approach 1:
The gateway node provides universal functionality that serves multiple local wireless access network nodes with different capabilities. This allows local nodes to have simplified designs while the gateway node handles complex functions such as protocol conversion, signaling management, and coordination with the core network, thereby achieving operational adaptability without increasing individual node complexity.
Data Source
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AI summary
A local wireless access network node receives, from a macro wireless access network node, a request to offload at least a portion of data traffic for a user equipment from the macro wireless access network node to the local wireless access network node, wherein the user equipment is to maintain a wireless connection to the macro wireless access network node after the offload. wireless access network node sends, to the macro wireless access network node, a response indicating acceptance of the request, the response including random access channel configuration information of the local wireless access network node and random access preamble information to be sent by the macro wireless access network node to the user equipment.