Terminal Positioning Signal Mapping for Device-to-Device Communications
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Solution Overview
Problem
The positioning using device-to-device direct communications in various scenarios such as in-coverage, partial-coverage, out-of-coverage, V2X, public safety, commercial, and IIoT is hindered by unclear definitions of signals and procedures for transmission and reception.
Innovation Solution
A terminal is equipped with a control unit that maps positioning signals to device-to-device direct communications signals and a transmission unit that transmits these signals to another terminal, multiplexing the positioning signal with control or shared channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If positioning signals are transmitted using device-to-device direct communications, then positioning capability is enabled, but signal definition and transmission procedure clarity is insufficient
Solution Approach 1:
The patent applies universality by enabling positioning signals to be transmitted through existing device-to-device communication channels (PSSCH, PSCCH) that are already defined for general communications. This allows the same infrastructure to serve both communication and positioning functions, avoiding the need for separate dedicated positioning signal definitions while maintaining positioning capability.
Solution Approach 2:
The patent uses an intermediary approach by mapping positioning signals to existing communication signal structures. The control unit acts as an intermediary that translates positioning requirements into compatible signal formats for transmission over established channels, thereby resolving the contradiction between enabling new functionality and maintaining system clarity.
2Productivity
If positioning signals are multiplexed with control channels or shared channels, then spectrum efficiency is improved, but signal interference may increase
Solution Approach 1:
The patent applies segmentation by dividing the signal transmission into distinct components: positioning signals are multiplexed with control channels (PSCCH) or shared channels (PSSCH) in a structured manner. The control unit manages this segmentation to ensure positioning signals are transmitted alongside communication signals without causing harmful interference, while still achieving spectrum efficiency through shared resource utilization.
Data Source
AI summary
A terminal includes: a control unit configured to map a signal used for positioning to signals of device-to-device direct communications; and a transmission unit configured to transmit the signals of the device-to-device direct communications to another terminal. The control unit multiplexes the signal used for positioning with a control channel or a shared channel of the signals of the device-to-device direct communications.