UE-to-Network Relay RRC Handling for Remote UE Reestablishment
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Solution Overview
Problem
There is a need for efficient communication in wireless communication systems supporting UE-to-network relays, particularly in handling RNA updates, reestablishment procedures, and setup requests for remote UEs, as well as managing configurations and radio bearers in sidelink communications.
Innovation Solution
The proposed solution involves a UE-to-network relay node that facilitates RNA updates, reestablishment procedures, and setup requests by utilizing RRC reconfiguration messages and timers, along with PC5 and Uu interface management to handle state transitions and bearer configurations for remote UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless communication systems increase data transmission capacity and connectivity, then network coverage and user experience are improved, but exposure to electromagnetic radiation increases causing health concerns
Solution Approach 1:
The patent applies spread spectrum technology to spread transmitted signals across a wide frequency band, which reduces the power spectral density and minimizes electromagnetic radiation exposure while maintaining data transmission capacity. This converts the potential harm of high-power transmission into a benefit by distributing energy across multiple frequencies, thereby reducing localized radiation exposure.
Solution Approach 2:
The system dynamically adjusts transmission parameters including power spectral density, frequency hopping patterns, and spreading codes to optimize the balance between data transmission capacity and electromagnetic radiation exposure. By changing these parameters adaptively, the system maintains productivity while controlling harmful radiation levels.
2Ease of operation
If wireless devices are made smaller and more portable, then ease of operation and mobility are improved, but battery life and processing power are limited
Solution Approach 1:
The patent employs code division multiple access (CDMA) technology that segments the frequency spectrum into multiple orthogonal codes, allowing multiple users to communicate simultaneously over the same frequency band. This segmentation enables efficient spectrum utilization, reducing the energy required per transmission and extending battery life in portable devices.
Solution Approach 2:
The wireless communication system is designed to operate across multiple frequency bands and support various transmission modes using the same hardware infrastructure. This multi-functionality allows portable devices to adapt to different network conditions without requiring additional specialized components, thereby maintaining compact size while optimizing energy consumption.
3Area of stationary object
If network infrastructure is expanded to cover more areas, then network coverage is improved, but cost and complexity of deployment increase
Solution Approach 1:
The patent utilizes frequency division duplexing (FDD) and time division duplexing (TDD) to combine uplink and downlink communications over the same or different frequency bands. This merging of communication directions into unified frequency resources reduces the need for separate infrastructure for each direction, thereby expanding coverage area while controlling deployment complexity and cost.
Solution Approach 2:
The system employs spatial diversity through multiple antennas and spatial multiplexing techniques to extend network coverage by utilizing the spatial dimension. Instead of deploying more base stations in every direction, the system leverages vertical and horizontal antenna arrangements to achieve broader coverage with the same infrastructure, reducing deployment complexity.
Data Source
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AI summary
Embodiments of the present disclosure relate to methods and apparatuses for wireless communications in a communication system. According to some embodiments of the disclosure, a UE may: communicate with a BS via a relay node; receive, via the relay node from the BS, an RRC message, wherein the RRC message may be one of the following: a first RRC release message; a second RRC release message including a suspend configuration; and an RRC reconfiguration message indicating a remote UE related configuration.