Combined Rank Feedback for Wireless Channel Status Overhead Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing mobile communication systems face overhead issues due to the need to receive and transmit channel status information from multiple receivers, which hampers efficiency.
Innovation Solution
A method and apparatus for sending and receiving combined rank information for multiple transmission schemes, allowing the acquisition of rank information for rank-restricted transmission schemes from rank-unrestricted transmission schemes, thereby reducing feedback overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel status information is received from multiple receivers, then transmission quality is improved, but overhead increases
Solution Approach 1:
The patent combines channel status information from multiple receivers into a single aggregated report. Instead of each receiver sending separate feedback, the system merges their information into one consolidated message, reducing the total overhead while maintaining the quality benefits of multiple receivers.
Solution Approach 2:
The patent creates a universal feedback mechanism that serves multiple receivers simultaneously. A single feedback message structure is designed to convey channel status information that is applicable to multiple receivers, eliminating the need for separate dedicated feedback channels for each receiver.
2Measurement precision
If separate rank information is transmitted for each transmission scheme, then transmission accuracy is improved, but feedback overhead increases
Solution Approach 1:
The patent merges rank information for multiple transmission schemes into a single combined feedback message. Instead of transmitting separate rank indicators for each scheme, the system combines them into one unified feedback structure that conveys all necessary rank information efficiently.
Solution Approach 2:
The patent changes the parameter representation by using a unified rank information format that can represent multiple transmission schemes simultaneously. This parameter transformation allows the system to convey accurate rank information for different schemes without multiplying the feedback size.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a channel status information transmission/reception method and apparatus in a wireless communication system in which the transmission apparatus generates channel status informations for at least two transmission schemes by combining rank informations corresponding to the transmission schemes into combined rank information through analyzing an uplink channel, and transmits the channel status informations for the respective transmission schemes on uplink channel, the channel status information for one of the transmission schemes containing the combined rank information; the reception apparatus receives the channel status informations corresponding to at least two transmission schemes, the channel status information for one of the transmission schemes including combined rank information for the transmission schemes, schedules downlink channel according to the channel status information, and transmits signals on the downlink channel. According to the present invention, the transmission apparatus combines rank informations of a plurality of transmission schemes and feeds back the combined rank information so as to reduce overhead at a reception apparatus.