Terminal Group Uplink Coordination via Common Control
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Solution Overview
Problem
Future 5G systems require an increase in communication throughput speed, but existing methods such as MIMO, carrier aggregation, and higher-order modulation for uplink transmission face challenges like increased cost, size, power consumption, and trade-offs with coverage.
Innovation Solution
A terminal with a reception section for common control information and a control section that coordinates uplink transmission among a group of user equipment (UEs), allowing for cooperative MIMO and efficient resource utilization through group-common DCI, enabling one UE to perform uplink transmission while others receive signals, thereby improving uplink throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO, carrier aggregation, and higher-order modulation are used for uplink transmission, then communication throughput speed is improved, but device complexity, cost, and power consumption increase
Solution Approach 1:
The patent merges multiple user terminals into a terminal group that shares common control information and uplink resources. By combining the capabilities of multiple terminals under group-common DCI, the system achieves MIMO-like throughput improvement without requiring complex MIMO hardware in each individual terminal, thus resolving the contradiction between throughput and device complexity
Solution Approach 2:
The patent creates a universal control mechanism where group-common DCI serves multiple terminals simultaneously. This multi-functional control approach allows a single control signal to manage uplink transmissions for the entire terminal group, reducing the complexity burden on individual terminals while maintaining high throughput through coordinated multi-terminal operation
2Productivity
If MIMO, carrier aggregation, and higher-order modulation are used for uplink transmission, then communication throughput speed is improved, but power consumption increases
Solution Approach 1:
By merging multiple terminals into a collaborative group that shares control information and resources, the patent reduces the power consumption burden on each individual terminal. The combined uplink transmission of the group achieves high throughput while distributing the power consumption load across multiple devices, preventing any single terminal from consuming excessive power
3Productivity
If higher-order modulation and broadband transmission are used, then communication throughput is improved, but coverage is compromised
Solution Approach 1:
The patent combines the transmission capabilities of multiple terminals in a group to achieve broadband transmission and higher-order modulation effects. By aggregating the signal contributions of multiple terminals, the system can utilize higher-order modulation schemes with improved reliability, as the combined transmission provides better signal strength and diversity, thus maintaining coverage while achieving high throughput
4Productivity
If group-common DCI is used for coordinating uplink transmission, then resource utilization efficiency is improved, but control information processing complexity increases
Solution Approach 1:
The patent implements a universal control mechanism where group-common DCI serves the entire terminal group simultaneously. This multi-functional control approach consolidates control information processing, reducing the complexity burden on individual terminals. Each terminal only needs to process the common control information and its own specific parameters, rather than handling complete independent control signals, thus improving resource utilization while managing processing complexity
Data Source
AI summary
This terminal is provided with: a reception unit for receiving control information concerning uplink transmission, which is common to a terminal group; and a control unit for controlling at least one of the uplink transmission and reception from another terminal which performs the uplink transmission, on the basis of the control information.