Wireless Uplink Paths for Direct and PC5 Relay Connectivity
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Solution Overview
Problem
Existing communication networks face challenges in efficiently managing multiple paths and protocols for wireless devices, particularly in scenarios involving network slicing and roaming, leading to suboptimal performance and resource utilization.
Innovation Solution
Implementing a flexible communication network architecture that supports multiple paths and protocols, allowing wireless devices to establish direct and indirect connections through base stations, and utilizing service-based architectures to optimize network functions and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing communication networks use traditional single-path architecture, then network simplicity is maintained, but network flexibility and efficiency are reduced in multi-path scenarios
Solution Approach 1:
The network path is segmented into multiple distinct routes (first path and second path) between the wireless device and the base station. This segmentation allows the system to select different paths based on communication needs, improving flexibility while managing complexity through structured path division
Solution Approach 2:
The network architecture transitions from a single-dimensional path to a multi-dimensional path structure by introducing multiple communication routes. This dimensional expansion enables the system to explore different transmission paths simultaneously, enhancing adaptability without proportionally increasing complexity
2Adaptability or versatility
If existing networks support only single protocol, then implementation simplicity is maintained, but compatibility across diverse technologies is limited
Solution Approach 1:
The network architecture is designed to support multiple communication protocols (first protocol and second protocol) simultaneously. Each protocol can be used over different paths, making the system universal and capable of handling diverse communication requirements without requiring separate specialized systems
Solution Approach 2:
The base station acts as an intermediary that manages multiple protocols and paths. It receives communications over different protocols and paths, performs appropriate routing and processing, and forwards to the core network, thereby simplifying protocol management complexity at the device level
3Reliability
If direct connection only is used, then connection simplicity is maintained, but communication reliability in challenging radio conditions is reduced
Solution Approach 1:
The system establishes a second indirect path through a relay device as a preemptive backup before the direct path fails. This prior cushioning ensures that when radio conditions deteriorate and the direct path becomes unreliable, the indirect path is already available to maintain communication, thereby improving reliability without requiring complex real-time switching
Solution Approach 2:
A relay device is introduced as an intermediary to establish indirect communication paths. This intermediary enables communications when direct paths are blocked or degraded, improving reliability by providing alternative routing options while keeping the complexity managed through standardized relay protocols
4Productivity
If traditional network architecture is used, then resource allocation simplicity is maintained, but resource utilization efficiency in network slicing is suboptimal
Solution Approach 1:
The network resources are segmented into different slices with specific functions and characteristics. Each path and protocol can be associated with different network slices, allowing efficient resource allocation and utilization by matching communication requirements with appropriate slice resources, thereby improving productivity through optimized resource matching
Data Source
AI summary
A method can include transmitting, by a first wireless device, an uplink data via a direct path between the first wireless device and a base station. The method can also include transmitting an information message comprising an identifier of a second wireless device. The method can include receiving a radio resource control (RRC) reconfiguration message indicating to add an indirect path between the first wireless device and the base station via the second wireless device and while keeping the direct path between the first wireless device and the base station. The method can further include establishing, by the first wireless device, a PC5 link with the second device for the indirect path of the first wireless device and the base station via the second wireless device. After the establishing, the first wireless device can transmit to the base station an RRC reconfiguration complete message via the indirect path.