Inter-RNC Multiflow Data Transmission via S-RNC Mediator
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Solution Overview
Problem
Legacy multiflow communication systems in wireless networks are limited to UE communication with NodeBs controlled by the same RNC, preventing the use of multiflow capabilities when a UE is in range of a NodeB controlled by a different RNC.
Innovation Solution
Establishing a first flow between a serving radio network controller (S-RNC) and a first network entity, and a second flow directly between the S-RNC and a second network entity controlled by a drift RNC, allowing data transmission to the UE via both flows, thereby enabling inter-RNC multiflow communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If legacy multiflow communication systems are used, then UE communication with NodeBs controlled by the same RNC is supported, but multiflow capability cannot be utilized when a UE is in range of a NodeB controlled by a different RNC
Solution Approach 1:
The S-RNC acts as an intermediary that establishes a direct flow to the second network entity controlled by the D-RNC, bypassing the need for complex inter-RNC coordination. This mediator approach allows the S-RNC to manage both flows (one to first network entity under its control, another to second network entity under D-RNC control) while maintaining simplified control plane interactions.
Solution Approach 2:
The communication system is segmented into independent flows: the first flow remains under S-RNC control for the first network entity, while the second flow is established directly from S-RNC to the second network entity. This segmentation allows each flow to be managed independently, enabling multiflow across RNC boundaries without requiring full inter-RNC multiflow coordination.
2Productivity
If direct flow establishment between S-RNC and second network entity is implemented, then inter-RNC multiflow communication is enabled, but control plane signaling complexity increases
Solution Approach 1:
The S-RNC serves as the intermediary that directly establishes the second flow to the second network entity without requiring complex D-RNC involvement in the flow setup. This approach enables high-speed data transmission through direct user plane connectivity while keeping control plane signaling relatively simple, as the S-RNC handles the flow establishment autonomously.
Solution Approach 2:
The S-RNC performs self-service by autonomously establishing the second flow to the second network entity controlled by the D-RNC. The S-RNC independently manages the flow setup, resource allocation, and data transmission without requiring complex coordination procedures with the D-RNC, thereby simplifying the overall control plane signaling while enabling inter-RNC multiflow.
Data Source
AI summary
The present disclosure presents methods and apparatuses for improved data rates in a wireless communications environment, wherein a user equipment (UE) may receive and transmit signals from a plurality of network entities (NodeBs), which are controlled by separate radio network controllers (RNCs). For example, the disclosure presents a method of wireless communication in a multiflow environment, which includes establishing a first flow between a serving radio network controller (S-RNC) and a first network entity, wherein the S-RNC controls the first network entity. The method also includes establishing a second flow between the S-RNC and a second network entity, which is controlled by a drift radio network controller (D-RNC). Furthermore, the method includes transmitting data to the UE via both the first flow and the second flow.