Universal Link for Direct Terminal Communication in Cellular Systems
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Solution Overview
Problem
In existing cellular communication systems, direct communication between terminals within the same cell or simultaneous signal transmission/reception through a repeater is inefficient due to the need for double time and frequency bands, as signals must pass through the base station twice.
Innovation Solution
The introduction of a universal link allows direct communication between terminals or simultaneous signal transmission/reception between a base station and terminals via a repeater, using universal link setting information and control signals to coordinate signal transmission/reception in a specific wireless resource region, either statically or dynamically set in frequency and time domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signals are transmitted between terminals through the base station using uplink and downlink, then communication between terminals is established, but double time and frequency bands are required reducing resource efficiency
Solution Approach 1:
The patent extracts the base station from the signal transmission path between terminals. Terminals directly communicate with each other through device-to-device (D2D) communication, removing the redundant base station relay and thereby reducing wireless resource consumption while maintaining communication reliability.
Solution Approach 2:
The patent introduces a universal link as an intermediary resource that enables direct terminal-to-terminal communication. This universal link serves as a shared communication channel that allows terminals to exchange signals directly without requiring separate uplink and downlink resources through the base station.
2Loss of energy
If direct communication between terminals is implemented, then wireless resource utilization efficiency is improved, but system complexity increases due to need for universal link coordination
Solution Approach 1:
The patent creates a universal link that serves multiple functions: it enables direct terminal-to-terminal communication, supports base station to terminal communication, and allows terminal to base station communication. This multi-functional approach simplifies the overall system by providing a single communication mechanism that handles various communication scenarios.
Solution Approach 2:
The patent implements feedback mechanisms where terminals report channel conditions and communication status to the base station. The base station uses this feedback information to coordinate universal link resources, dynamically adjust transmission parameters, and manage interference, thereby controlling system complexity through intelligent coordination.
3Adaptability or versatility
If universal link is dynamically set according to cell position, then communication flexibility is improved, but signaling overhead and system complexity increase
Solution Approach 1:
The patent implements dynamic universal link configuration where the link parameters are adjusted based on cell position, terminal location, and channel conditions. This dynamic adaptation allows the system to optimize communication performance for different scenarios while the base station coordinates these changes to manage signaling overhead.
Solution Approach 2:
The patent changes key communication parameters such as frequency, time resources, and power levels of the universal link based on cell position and communication requirements. By dynamically adjusting these parameters, the system achieves flexibility in adapting to different communication scenarios while managing the overhead through efficient parameter coordination.
Data Source
AI summary
Disclosed is a cellular communication system allowing direct communication between terminals within a cell or simultaneous transmission and reception of signals between a base station and the terminals through a repeater to be made by introducing a universal link, and a communication method thereof. The communication method of the cellular communication system includes: transmitting, by a base station, universal link setting information and a transmission control signal to a first terminal within a cell, transmitting, by the base station, the universal link setting information and a reception control signal to a second terminal within the cell, and directly transmitting/receiving, by the first and second terminals, signals through the universal link.