Adaptive Codeword Selection in MIMO Wireless Transmissions
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing codewords and codeblock sizes in MIMO transmissions, leading to suboptimal data throughput, latency, and processing complexity, particularly in supporting diverse service types like URLLC and eMBB.
Innovation Solution
The method involves selecting the number of codewords and codeblock sizes based on the service type associated with the MIMO transmission, processing capability of the receiver, and scheduling conditions, to optimize latency, throughput, and decoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple codewords are transmitted in MIMO to increase data throughput, then throughput is improved, but processing latency increases
Solution Approach 1:
The patent implements dynamic selection of the number of codewords based on service type requirements. For URLLC services, only one codeword is transmitted to minimize latency, while for eMBB services, multiple codewords are transmitted to maximize throughput. This dynamic adaptation resolves the contradiction by adjusting the system behavior according to real-time service demands.
Solution Approach 2:
The patent changes the parameter of codeword quantity based on service type. By configuring different numbers of codewords (one for URLLC, multiple for eMBB) according to service requirements, the system optimizes the trade-off between throughput and latency for different application scenarios.
2Productivity
If multiple codewords are transmitted in MIMO to increase data throughput, then throughput is improved, but processing complexity increases
Solution Approach 1:
The system dynamically adjusts the number of codewords based on service type and receiver processing capability. For services requiring low complexity or from receivers with limited processing power, fewer codewords are transmitted. This dynamic adjustment resolves the contradiction by adapting throughput versus complexity trade-offs to actual system conditions.
Solution Approach 2:
The patent applies different transmission configurations to different service types and receiver capabilities. Instead of using a uniform approach, the system tailors the number of codewords to local conditions - using more codewords for capable receivers handling eMBB traffic, and fewer codewords for receivers with limited processing capability or handling URLLC traffic.
3Device complexity
If fixed codeword configuration is used in MIMO transmissions, then device complexity is reduced, but adaptability to different service types deteriorates
Solution Approach 1:
The patent implements dynamic codeword configuration that adapts to different service types (URLLC, eMBB) and receiver capabilities. The base station selects the appropriate number of codewords based on service requirements and receiver processing capability, providing high adaptability without requiring complex manual configuration. This resolves the contradiction by making the system self-adapting through automated selection based on service type.
Data Source
AI summary
A transmitter may initiate multiple-input multiple-output (MIMO) communications with a receiver in which a number of codewords used in MIMO transmissions may be selected to provide enhanced communications for a particular service that is associated with the MIMO transmission. In cases where a lower-latency service is identified, a MIMO transmission may be configured with one codeword transmitted over multiple spatial layers, which may provide lower processing latency at a receiver relative to processing of multiple codewords. In cases where a mobile broadband service is identified, a MIMO transmission configured with two (or more) codewords may be transmitted over multiple spatial layers, which may provide increased data throughput relative to a single codeword MIMO transmission. A codeblock size for a transmission also may be selected based at least in part on a service associated with the transmission.