Millimeter Wave Communication Path Establishment via Dual-Path RRC Signaling
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Solution Overview
Problem
The integration of millimeter wave technology into mobile communication systems poses challenges in establishing and maintaining communication paths, particularly in handover procedures and cell configuration, due to the need for efficient operational changes that minimize disruptions and ensure reliable data transmission across different frequency bands.
Innovation Solution
A method for operating a millimeter wave communication system that involves transmitting Radio Resource Control (RRC) messages and establishing communication paths between terminals and base stations using a combination of conventional cellular and millimeter wave frequency bands, with RRC messages being transmitted and received through specific communication paths and bearers, ensuring seamless handover and cell configuration processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If millimeter wave technology is integrated into mobile communication systems, then system capacity and data transmission rate are improved, but complexity of establishing and maintaining communication paths increases
Solution Approach 1:
The patent introduces a dual-path architecture where conventional cellular paths and millimeter wave paths work together. The conventional path serves as a reliable intermediary for control signaling (RRC messages) while the millimeter wave path handles high-speed data transmission. This mediator approach allows the system to leverage the high capacity of mmWave without bearing its full complexity burden, as the conventional path absorbs much of the control overhead.
Solution Approach 2:
The communication system is segmented into distinct functional paths: a conventional cellular path for control plane operations and a millimeter wave path for user plane data transmission. This segmentation allows each path to be optimized independently - the conventional path for reliability and coverage, the mmWave path for capacity and speed - thereby managing overall system complexity while maximizing productivity.
2Adaptability or versatility
If handover procedures are implemented in millimeter wave systems, then mobility and adaptability are improved, but operational disruptions and time loss increase
Solution Approach 1:
The system performs preliminary actions by establishing the conventional cellular communication path before activating the millimeter wave path. Control signaling and path setup are completed through the conventional path in advance, so that when handover is needed, the critical control plane is already established and can quickly coordinate the mmWave path reconfiguration without causing disruptions.
Solution Approach 2:
The patent implements dynamic path management where the system can flexibly switch between conventional and millimeter wave paths based on real-time conditions. The conventional path remains available as a fallback and control channel throughout the handover process, enabling seamless transitions that maintain mobility while minimizing service interruption time.
3Reliability
If communication paths are established between base stations and terminals, then connectivity is improved, but operational changes and system complexity increase
Solution Approach 1:
The conventional cellular communication path serves multiple functions simultaneously: it provides user data transmission, carries control signaling (RRC messages), establishes communication paths, and acts as a fallback during handovers. This multi-functionality reduces the need for separate dedicated paths for each function, thereby improving connectivity reliability while limiting the increase in operational complexity.
Data Source
AI summary
An operation method of a communication node in a millimeter-wave based communication system may comprise when a first communication path between the second base station and the terminal connected to the first base station is not established, transmitting a radio resource control (RRC) request message requesting establishment of the first communication path to the second base station via the first base station; receiving an RRC response message from the second base station via the first base station, the RRC response message being a response to the RRC request message; and establishing the first communication path based on the RRC response message.