Receiver Chain Allocation Across Component Carriers Under RF Limits
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Solution Overview
Problem
Wireless communication devices face limitations in utilizing the maximum number of receiver chains due to availability of radio frequency resources and demodulation capabilities, leading to reduced network throughput and increased latency.
Innovation Solution
Dynamically allocate a number of receiver chains to each component carrier (CC) based on availability and decoding requirements to maximize the total number of actively used receiver chains or increase throughput, using a message from a network node to configure the allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the maximum number of receiver chains is allocated to each component carrier, then the decoding capability and reliability are improved, but the resource availability and demodulation capabilities become insufficient
Solution Approach 1:
The patent implements dynamic receiver chain allocation where the number of receiver chains assigned to each component carrier is not fixed but adapts based on real-time channel conditions, traffic requirements, and available RF resources. The network node continuously monitors system state and adjusts the allocation dynamically, allowing the system to optimize between decoding capability and resource availability rather than being constrained by a static maximum allocation.
Solution Approach 2:
The system changes the parameter of receiver chain allocation by introducing configurable minimum and maximum thresholds that can be adjusted based on network conditions. The network node modifies allocation parameters dynamically, changing the number of active receiver chains from a fixed maximum to a flexible range, thereby resolving the contradiction between having enough chains for reliable decoding and having sufficient RF resources available.
2Productivity
If more receiver chains are used for decoding component carriers, then the network throughput is improved, but the latency increases due to resource constraints
Solution Approach 1:
The dynamic allocation mechanism allows the system to rapidly adjust the number of active receiver chains in response to changing traffic demands and channel conditions. When traffic load increases, more chains can be activated quickly without permanent resource commitment, thereby improving throughput while minimizing the time penalty associated with resource reconfiguration and allocation overhead.
Solution Approach 2:
The system allocates receiver chains on-demand rather than maintaining a permanent maximum allocation. Only the necessary number of chains are activated at any given moment based on actual decoding requirements, avoiding the time loss associated with managing and maintaining excess idle receiver chains while still being capable of scaling up throughput when needed.
3Device complexity
If a fixed number of receiver chains is allocated to each component carrier, then the device complexity is reduced, but the resource utilization efficiency decreases
Solution Approach 1:
The network node implements a universal allocation framework that manages multiple component carriers and receiver chains through a single dynamic allocation mechanism. This multi-functional system handles diverse allocation scenarios (different carriers, different channel conditions, different traffic types) through one unified process, avoiding the need for separate fixed allocation logic for each carrier while maximizing overall resource utilization efficiency across the entire system.
Data Source
AI summary
A method for wireless communication by a user equipment (UE) includes receiving, from a network node, a message configuring a group of component carriers (CCs). The method also includes allocating, to each CC of the group of CCs based on receiving the message configuring the group of CCs, one of a respective first number of receiver chains, from a group of receiver chains available at the UE, or a respective second number of receiver chains, from the group of receiver chains, to maximize a total number of receiver chains for decoding the group of CCs, collectively. The method further includes decoding each CC of the group of CCs based on the respective first number of receiver chains or the respective second number of receiver chains allocated to the CC.