Joint Uplink Resource Pools for Collision-Aware UE Scheduling
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Solution Overview
Problem
Uplink communications in wireless networks face limitations due to limited transmit power, processing capabilities, battery restrictions, and spatial degrees of freedom of user equipment (UEs), leading to interference, shading, cell edge issues, handovers, and varying radio channels, which existing techniques struggle to address effectively, particularly in scheduled transmissions.
Innovation Solution
Implementing a joint-resource pool (JRP) for uplink communications, where UEs share physical resources with other UEs, using a listen-before-talk scheme and adaptive resource allocation based on configuration data, including rules for medium access, collision resolution, and retransmissions, to enhance communication reliability and quality of service (QoS).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UEs transmit simultaneously in scheduled uplink communications, then transmission efficiency is improved, but interference between UEs increases
Solution Approach 1:
The patent segments the uplink resources into two distinct pools: a first resource pool for scheduled transmissions and a second resource pool for unscheduled transmissions. This segmentation allows different transmission modes to coexist without mutual interference, enabling multiple UEs to transmit simultaneously in the unscheduled pool while maintaining order in the scheduled pool, thus resolving the contradiction between transmission efficiency and interference.
Solution Approach 2:
The patent introduces a base station as an intermediary that manages both resource pools and provides coordination between scheduled and unscheduled transmissions. The base station receives indication information from UEs about their transmission needs and coordinates resource allocation, acting as a mediator that prevents interference while maintaining high transmission efficiency through flexible resource management.
2Device complexity
If UEs use limited transmit power and processing capabilities, then device complexity is reduced, but communication reliability deteriorates
Solution Approach 1:
The patent makes the base station a multi-functional entity that handles both scheduled and unscheduled uplink transmissions, resource allocation, and interference coordination. By concentrating these functions at the base station level, the UE devices maintain their simplicity with limited processing capabilities while the system as a whole achieves high communication reliability through the base station's comprehensive management.
3Adaptability or versatility
If UEs transmit in shared resources without strict scheduling, then adaptability to network conditions is improved, but collision probability increases
Solution Approach 1:
The patent implements dynamic resource allocation where UEs can flexibly choose between the first resource pool (for scheduled transmissions) and the second resource pool (for unscheduled transmissions). This dynamic flexibility allows the system to adapt to varying network conditions while the clear division between pools prevents collisions, resolving the contradiction between adaptability and collision probability.
Data Source
AI summary
Examples refer to communication networks between user equipments, UEs, with other devices, such as a base station, BS. Examples refer to communication methods, e.g., for uplink, UL. A joint-resource pool (JRP) is defined.