Multi-Relay Link Selection Using Channel State Reports
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing communication through multiple relays, leading to increased resource consumption and reduced reliability due to the need to connect multiple UEs to a single relay, which can overwhelm the relay's resources.
Innovation Solution
A method is introduced where a base station or user equipment selects a single relay or a fewer number of relays based on channel state reports, optimizing the communication path by choosing the best link quality, thereby reducing the number of UEs connected to each relay and minimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple relays are used to facilitate communication between base station and user equipment, then communication reliability is improved, but resource consumption increases
Solution Approach 1:
The patent segments the relay selection process into distinct phases: initial relay discovery, channel state reporting, and relay selection based on quality metrics. This segmentation allows the system to use multiple relays for reliability while systematically managing resource consumption through structured selection criteria.
Solution Approach 2:
The patent changes the parameter of relay selection from static to dynamic by introducing channel state reports and quality metrics. The base station selects relays based on real-time channel conditions, transforming the relay selection from a fixed configuration to an adaptive process that optimizes resource usage while maintaining reliability.
2Productivity
If multiple UEs share access to the same relay, then network capacity is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent introduces dynamic relay assignment where UEs can be assigned to different relays based on changing channel conditions. The base station receives channel state reports from multiple relays and dynamically selects the optimal relay for each UE, making the system adaptive rather than static.
Solution Approach 2:
The patent implements a feedback mechanism where UEs send channel state reports back to the base station regarding the quality of links to different relays. This feedback enables the base station to make informed decisions about relay assignment, optimizing resource utilization while maintaining high network capacity.
3Reliability
If relay selection is based on comprehensive channel state reports, then communication quality is improved, but system complexity increases
Solution Approach 1:
The patent segments the channel state reporting process into standardized templates that UEs can follow. Instead of requiring complex custom reporting mechanisms, the system uses structured report formats that simplify the complexity while still capturing necessary channel quality information for reliable communication.
Data Source
AI summary
Wireless communications systems and methods related to routing communications in a multiple-relay environment are provided. A base station (BS) transmits, to one or more wireless communication devices, a reference signal configuration indicating one or more reference signal resources. The base station receives, from a first wireless communication device of the one or more wireless communication devices, a channel state report based on one or more reference signals in the one or more reference signal resources. The channel state report includes channel measurement information for one or more links, each link connecting a wireless communication device of the one or more wireless communication devices to a user equipment (UE). The BS transmits, to the UE via a second wireless communication device of the one or more wireless communication devices based on the channel state report, a data signal.