UE Coordination Set Beam Sweeping for Signal Quality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless communication systems face challenges in maintaining signal quality due to factors like interference, distance, and environmental obstructions, leading to degraded performance in UE-base station connections.
Innovation Solution
The implementation of UE-coordination sets, where multiple UEs form a group to coordinate beam sweeping, enhancing link budget by combining antennas and transmitters to improve signal quality through coordinated beam training and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional beam sweeping procedures are used by individual UEs, then each UE can independently perform beam training, but the link budget remains limited due to single-UE transmission power and reception sensitivity
Solution Approach 1:
Multiple UEs are merged into a coordination set to perform joint beam sweeping. The UEs coordinate their beam training procedures and combine their transmission signals, effectively increasing the total transmit power and improving the link budget for both uplink and downlink communications with the base station.
Solution Approach 2:
The patent introduces a new dimension of coordination among multiple UEs in spatial and temporal domains. By coordinating beam sweeping across multiple UEs with different spatial positions and timing, the system achieves diversity gains and improves reliability beyond what a single UE can accomplish.
2Reliability
If multiple UEs coordinate beam sweeping jointly, then the link budget improves through combined transmission, but the coordination complexity and signaling overhead increase
Solution Approach 1:
The base station acts as an intermediary to coordinate the beam sweeping process among multiple UEs. It manages the timing, assigns beam sweeping patterns, and collects beam report information from participating UEs, thereby centralizing the coordination complexity at the network side rather than requiring complex peer-to-peer coordination among UEs.
Solution Approach 2:
The coordinated beam sweeping is performed in periodic time slots dedicated to beam training. This structured periodic approach allows UEs to know when to transmit and receive beam training signals, reducing random access conflicts and simplifying the coordination protocol compared to ad-hoc coordination.
3Power
If UEs perform beam training independently, then the beam identification process is simple, but the effective receive power at the base station remains limited
Solution Approach 1:
The base station combines beam report information from multiple UEs in the coordination set to identify optimal beams for joint transmission. By merging the beam training results from multiple UEs with different spatial perspectives, the system achieves better beam selection and higher effective receive power.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This document describes techniques and apparatuses for user-equipment coordination set (UECS) beam sweeping. In aspects, a user equipment (UE) receives (425) an indication to coordinate beam sweeping with a UECS. The UE directs (430) each UE in the UECS to perform a beam-training procedure by receiving a set of downlink beam transmissions, and forwards (515) beam report information to a base station. In implementations, the UE receives (530) an indication of one or more beam identities and one or more assigned time slots, and directs (540) at least two UEs in the UECS to use specific beams indicated by the beam identities at specific time slots indicated by the assigned time slots, such as by transmitting a respective beam identity and a respective time slot to each UE of the at least two UEs.