HeNB D2D System Information Routing via Macro eNB
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) associated with a Home evolved Node-B (HeNB) lacks direct communication of device-to-device (D2D) resource allocations, particularly for LTE Rel-11 and earlier versions, hindering effective D2D communication.
Innovation Solution
A method and apparatus that determine whether a HeNB is operable to communicate system information, including D2D resource allocations, to a UE, and if not, transmit this information via other network entities, ensuring the UE receives necessary resource allocations for D2D communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a HeNB is used to provide service within a limited geographical range, then coverage area is reduced and interference is minimized, but the HeNB cannot communicate system information including D2D resource allocations to the UE
Solution Approach 1:
The patent introduces a macro eNB as an intermediary entity that receives system information from the network and forwards it to the UE through the HeNB. This mediator resolves the contradiction by enabling information flow without requiring the HeNB itself to have full system information capabilities, thus maintaining the low-interference advantage while ensuring information delivery.
2Stability of the object's composition
If D2D resource allocation is decided by the macro eNB, then system-wide coordination is improved, but the information cannot be communicated directly to the UE through the HeNB
Solution Approach 1:
The patent segments the information communication function into two parts: the macro eNB handles system-wide coordination and receives system information, while the HeNB handles local delivery to the UE. This segmentation allows each entity to perform its specialized function effectively, resolving the contradiction between centralized coordination and local communication efficiency.
3Loss of information
If the HeNB is configured to forward system information from the macro eNB, then information delivery is enabled, but the HeNB requires additional configuration and signaling overhead
Solution Approach 1:
The patent leverages the existing multi-functional capability of the HeNB by utilizing its standard forwarding and relaying functions already present in the network architecture. Rather than adding specialized D2D information delivery mechanisms, the solution uses the HeNB's universal forwarding capability, thus enabling information delivery without significantly increasing device complexity.
Data Source
AI summary
A method, an apparatus, and a computer program product for wireless communication are provided in which a network entity may be operable to communicate D2D resource allocations to a UE supported by a HeNB. In one example, the network entity may be operable to determine whether a HeNB is operable to communicate system information to a UE. As used herein, system information may include, but is not limited to, D2D resource allocations, paging information, etc. When the network entity determines that a HeNB is operable to communicate system information to a UE, then it may transmit the system information to the HeNB to allow the HeNB to convey the system information to the UE. When the network entity determines that a HeNB is not operable to communicate system information to a UE, then it may transmit the system information to the UE via one or more other network entities.