Wireless Feedback Payload Encoding Long-Term Channel Statistics
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Solution Overview
Problem
In wireless communications systems, particularly in 3GPP LTE Release-9 and earlier compliant systems, there is a limitation in feeding back channel information, as existing methods do not efficiently incorporate long term wideband channel statistics, which are crucial for improving transmission design and adapting codebooks, due to high frequency feedback requirements and channel information periodicity.
Innovation Solution
A method and system that generate and transmit feedback information including both first and second long term wideband channel statistics, allowing for encoding and precoding of transmissions based on these statistics, without significantly disrupting existing feedback mechanisms, by combining long term wideband channel statistics with existing feedback formats or using new packet formats to transmit additional channel information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional channel information (long term wideband channel statistics) is fed back, then communication system performance is improved, but feedback overhead increases
Solution Approach 1:
The patent combines long term wideband channel statistics with existing feedback formats (such as PMI/CQI feedback) to transmit additional channel information without requiring separate dedicated feedback resources. This merging approach allows the system to improve performance through more comprehensive channel knowledge while avoiding the overhead increase that would result from separate feedback channels.
2Adaptability or versatility
If long term wideband channel statistics are incorporated into feedback, then transmission design and codebook adaptation are enhanced, but feedback complexity increases
Solution Approach 1:
The patent makes the feedback mechanism multi-functional by enabling it to carry both traditional channel quality information (PMI/CQI) and long term wideband channel statistics within the same feedback structure. This universality allows the feedback system to serve multiple purposes - immediate scheduling decisions and long-term transmission design adaptation - without requiring separate specialized feedback procedures for each function.
Data Source
AI summary
A system and method for feeding back channel information are provided. A method for communications device operations includes generating feedback information, encoding the feedback information to produce a feedback payload, and transmitting the feedback payload to a communications server serving a communications device. The feedback information includes at least a first long term wideband channel statistics and a second long term wideband channel statistics.