Dynamic Carrier Aggregation for Wireless Relay Resource Allocation
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Solution Overview
Problem
Existing Carrier Aggregation (CA) configurations in wireless communication systems do not differentiate between User Equipment (UE) and relays, leading to limited resources available for relays serving additional relays and UEs, which results in inefficient downlink throughput.
Innovation Solution
A method to dynamically control CA configurations for wireless relays and UEs by determining the amount of user data transferred and translating it into new CA configurations, optimizing resource allocation and channel allocation to improve backhaul resource utilization and downlink throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If Carrier Aggregation configurations are set for both relays and UEs to allow higher throughput rates, then data transmission speed is improved, but resources available for relays serving additional relays and UEs are limited
Solution Approach 1:
The patent implements dynamic CA configuration that adapts to changing network conditions and traffic patterns. The system continuously monitors resource utilization and adjusts CA parameters (number of component carriers, frequency bands) in real-time, allowing the network to optimize between throughput and resource availability based on current demand rather than using static configurations.
Solution Approach 2:
The patent applies different CA configurations to different parts of the network based on local conditions. Relays and UEs receive customized CA settings tailored to their specific requirements, channel conditions, and traffic patterns. This allows high-throughput configurations for UEs with good channel conditions while maintaining adequate resource allocation for relays serving multiple devices.
2Device complexity
If existing CA configuration determinations are used that do not differentiate between UEs and relays, then configuration simplicity is maintained, but downlink throughput efficiency deteriorates
Solution Approach 1:
The patent segments the CA configuration process into distinct handling for relays and UEs. The system separately determines CA parameters for relays based on relay-specific metrics (backhaul traffic, number of served UEs) and for UEs based on UE-specific metrics (channel quality, data rate requirements). This segmentation enables optimized configurations for each device type while maintaining manageable complexity through standardized procedures.
Solution Approach 2:
The patent dynamically changes CA parameters based on device type and network conditions. For relays, the system adjusts the number of component carriers, frequency band selections, and resource block allocations according to relay traffic load and the number of UEs being served. For UEs, similar parameters are adjusted based on channel quality and throughput requirements, achieving high downlink efficiency without excessive complexity.
Data Source
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AI summary
A wireless communication system (100, 400) controls Carrier Aggregation (CA) at a wireless relay (110, 410). A wireless access point (120, 420, 600) wirelessly receives user data and transfers a first portion of the user data to a wireless User Equipment (UE) (101, 401) using a UE CA configuration and a second portion of the user data to the wireless relay (110, 410) using a relay CA configuration, wherein the wireless relay (110, 410) wirelessly serves additional UEs (102, 402). The wireless access point (120, 420, 600) determines an amount of the transferred user data and translates the amount of the transferred user data into a new UE CA configuration and a new relay CA configuration. The wireless access point (120, 420, 600) wirelessly receives additional user data and transfers a first portion of the additional user data to the wireless UE (101, 401) using the new UE CA configuration and a second portion of the additional user data to the wireless relay (110, 410) using the new relay CA configuration.