Beamforming Control Information Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently and reliably sending control information, which is critical for achieving good performance, as existing methods often require additional radio resources and may not effectively utilize beamforming techniques for control data.
Innovation Solution
The method involves using beamforming for both traffic data and control information in wireless communication systems, employing a precoding matrix to improve coverage and reliability, and multiplexing beamformed traffic data and control information using time division multiplexing (TDM) or frequency division multiplexing (FDM) on separate physical channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information is sent using traditional methods without beamforming, then the system complexity is lower, but the coverage and reliability of control information transmission are insufficient
Solution Approach 1:
The patent merges the beamforming process for traffic data and control information by using the same precoding matrix for both types of information. This combination approach allows control information to benefit from beamforming gains without requiring a separate beamforming mechanism, thereby improving reliability while controlling complexity
Solution Approach 2:
The precoding matrix serves multiple functions: it is used for beamforming both traffic data and control information. This multi-functionality eliminates the need for separate processing chains and reduces overall system complexity while achieving improved transmission reliability for both data types
2Area of stationary object
If beamforming is applied to control information separately from traffic data, then coverage is improved, but the overhead and resource consumption increase
Solution Approach 1:
The patent combines the resource allocation for traffic data and control information by using the same precoding matrix and associated radio resources for both. This merging eliminates duplicate resource allocations and reduces overall overhead while maintaining extended coverage through beamforming
Solution Approach 2:
The same precoding matrix and radio resources are made universal for both traffic data and control information transmission. This approach allows a single resource allocation to serve multiple purposes, reducing the total quantity of radio resources needed while achieving improved coverage
3Productivity
If different precoding matrices are used for traffic data and control information, then transmission optimization is improved, but the processing complexity and overhead increase
Solution Approach 1:
The patent merges the precoding matrix selection and processing for traffic data and control information by using a single precoding matrix for both. This eliminates the need for separate matrix processing chains, reducing computational complexity and overhead while maintaining transmission efficiency
Solution Approach 2:
The precoding matrix is designed to be universal, serving both traffic data and control information transmission functions. This multi-functionality reduces the total number of matrices that need to be processed and managed, thereby reducing complexity while maintaining optimal transmission performance
Data Source
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AI summary
Techniques for sending traffic data and control information in a wireless communication system are described. In one design, a transmitter (e.g., a Node B or a UE) may perform beamforming to send traffic data on M layers based on a precoding matrix, where M may be one or greater. The transmitter may also perform beamforming to send control information on up to M layers based on the same precoding matrix used for the traffic data. The transmitter may send the beamformed traffic data on a first physical channel and may send the beamformed control information on a second physical channel. The transmitter may multiplex the beamformed traffic data and the beamformed control information using time division multiplexing (TDM) or frequency division multiplexing (FDM).