Dynamic Path Switching Between Uu and PC5 Interfaces
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Solution Overview
Problem
Existing wireless communication systems lack efficient mechanisms for dynamic path switching between Uu and PC5 interfaces, leading to suboptimal performance in terms of link quality and resource utilization.
Innovation Solution
A wireless transmit/receive unit (WTRU) is configured to receive configuration information including path switching capabilities, policies, and information sharing methods, allowing it to determine and perform path switches between Uu and PC5 interfaces based on various triggers and policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If path switching between Uu and PC5 interfaces is implemented, then link quality and resource utilization are improved, but device complexity and control mechanism complexity increase
Solution Approach 1:
The patent implements dynamic path switching between Uu and PC5 interfaces based on real-time link quality conditions. The system transitions from a static communication path to a dynamic one where the interface selection changes according to network conditions, enabling the WTRU to switch between interfaces to maintain optimal link quality while managing complexity through condition-based automation.
Solution Approach 2:
The patent employs feedback mechanisms where the WTRU monitors link quality metrics and uses this information to determine when to switch between Uu and PC5 interfaces. The feedback loop includes measuring link quality, comparing it against thresholds, and automatically triggering path switching when conditions change, thereby improving reliability while containing control complexity through automated decision-making.
2Productivity
If dynamic path switching is enabled, then resource utilization is improved, but path switch delay and control overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring path switching parameters, thresholds, and policies before actual switching is needed. The system prepares switching decisions in advance by establishing evaluation criteria for link quality and resource conditions, enabling faster execution when switching becomes necessary while reducing the time required for decision-making during dynamic conditions.
Solution Approach 2:
The system dynamically adjusts communication paths based on real-time resource availability and link conditions. By making the path selection process adaptive and responsive to current network state, the system optimizes resource utilization across both Uu and PC5 interfaces while minimizing switching delays through condition-triggered automated decisions.
3Productivity
If path switching policies are implemented, then communication efficiency is improved, but configuration complexity and policy management difficulty increase
Solution Approach 1:
The patent utilizes parameter changes by defining path switching policies based on measurable parameters such as link quality thresholds, resource availability levels, and communication conditions. By translating complex switching decisions into parameter-based rules, the system improves communication efficiency through automated policy enforcement while reducing configuration complexity by using objective, quantifiable criteria for path selection.
Data Source
AI summary
A wireless transmit receive unit (WTRU) may be configured to transmit on a first interface and determine to transmit on a second interface. The WTRU may receive configuration information. For example, the configuration information may include a path switching capability indication, a path switching policy, and an information sharing method indication. Based on the configuration information, the WTRU may determine to perform a path switch. In response to determining to perform a path switch, the WTRU may retrieve certain information associated with a peer WTRU. The WTRU may transmit, based on the retrieved information, a path switch request to the peer WTRU. The WTRU may receive a response to the path switch request. If the response indicates that the path switch request has been accepted by the peer WTRU, the WTRU may perform a communication path switch from the first interface to a second interface.