RedCap UE Type Signaling for Reliable Sidelink Resource Setup
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Solution Overview
Problem
Conventional communication systems fail to provide a mechanism for non-Reduced Capability (RedCap) User Equipment (UE) to identify the type of RedCap UE, leading to improper configuration of sidelink transmission resources and subsequent communication failures between RedCap and non-RedCap UEs.
Innovation Solution
RedCap UEs are equipped with mechanisms to indicate their type to non-RedCap UEs, allowing proper configuration of sidelink communication parameters and reducing system complexity and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If RedCap UEs do not indicate their type to non-RedCap UEs, then system complexity is reduced, but sidelink communication reliability deteriorates due to improper resource configuration
Solution Approach 1:
The patent applies preliminary action by having RedCap UEs indicate their type to non-RedCap UEs before actual sidelink communication occurs. This type indication is transmitted in advance through physical sidelink channels, allowing the receiving UE to pre-configure appropriate communication parameters and resources, thereby ensuring reliable communication without increasing overall system complexity.
2Reliability
If RedCap UEs indicate their type to non-RedCap UEs, then sidelink communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the type indication information into different parts transmitted through various physical sidelink channels (e.g., PSCCH, PSSCH). This segmentation allows the indication to be distributed efficiently without requiring a single complex signaling mechanism, thereby improving reliability while minimizing the complexity increase at each device.
Solution Approach 2:
The patent applies universality by designing the type indication mechanism to serve multiple functions: it identifies RedCap UE type, enables appropriate resource configuration, and facilitates compatible communication modes. This multi-functionality reduces the need for separate dedicated signaling mechanisms, thereby improving reliability without proportionally increasing device complexity.
3Productivity
If proper resource allocation is implemented for RedCap UEs, then sidelink communication efficiency is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by having UEs determine and configure appropriate communication parameters based on received type indications before actual data transmission. This pre-configuration of resources and parameters enables efficient sidelink communication without requiring complex real-time resource allocation mechanisms, thereby improving productivity while controlling system complexity.
Data Source
AI summary
Example aspects include an apparatus and method of wireless communication by a reduced capability user equipment (RedCap UE) in a network, comprising sending, to a non-RedCap UE, an indication indicating the RedCap UE as a RedCap UE device. The aspects further include performing sidelink communications with the non-RedCap UE in accordance with capabilities of the RedCap UE.