Wireless Transmission Mode Adaptation for Resource Efficiency
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Solution Overview
Problem
In wireless communication systems, the transmission mode of mobile stations is not optimized based on channel status, leading to deteriorated resource efficiency and system throughput during initial access and non-scheduled transmissions.
Innovation Solution
A method where the mobile station selects an optimal transmission mode based on channel status and notifies the base station, allowing the base station to decode data accordingly, using techniques such as mapping information onto transmission resources, phase rotation, or demodulation reference signals to convey the transmission mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile station transmits data in a default transmission mode for initial access and non-scheduled transmission, then the base station can decode the data, but resource efficiency is deteriorated
Solution Approach 1:
The mobile station feeds back channel status information to the base station, enabling the base station to adapt its decoding parameters. This feedback mechanism allows the system to transition from blind default-mode decoding to informed adaptive decoding, resolving the contradiction between reliable decoding and resource efficiency.
Solution Approach 2:
The transmission mode parameter is changed from a fixed default value to a dynamically selected value based on channel status. The mobile station selects the optimal transmission mode (e.g., single-antenna, multi-antenna, beamforming) according to real-time channel conditions and notifies the base station, enabling parameter adaptation that improves resource efficiency while maintaining decoding reliability.
2Productivity
If the mobile station selects a proper transmission mode depending on channel status, then frequency gain and diversity gain are obtained, but the base station cannot know the configuration for initial access and non-scheduled transmission
Solution Approach 1:
A transmission mode indication field acts as an intermediary carrier, embedded in the downlink signal to convey transmission mode configuration information from the mobile station to the base station. This intermediary mechanism enables the base station to acquire lost configuration information without disrupting the transmission process.
Solution Approach 2:
The mobile station provides feedback information about its selected transmission mode configuration to the base station. This feedback loop ensures that the base station receives necessary configuration details, eliminating information loss while maintaining the mobile station's autonomy in selecting optimal transmission modes based on channel status.
3Device complexity
If the base station does not know information on configuration or transmission mode of the mobile station, then the mobile station must use default transmission mode, but system throughput is deteriorated
Solution Approach 1:
The transmission mode indication field serves as an information bridge, carrying configuration details from the mobile station to the base station. This intermediary data structure enables the base station to acquire transmission mode information without significantly increasing its processing complexity, thereby improving system throughput.
Solution Approach 2:
The mobile station preliminarily determines and selects the optimal transmission mode based on channel status before transmission begins. By pre-selecting the appropriate mode and notifying the base station in advance, the system avoids the need for complex real-time decision-making at the base station, improving throughput while keeping device complexity manageable.
Data Source
AI summary
The present invention relates to a method and apparatus for transceiving data in a wireless communication system. A method for receiving data in a wireless communication system according to one aspect of the present invention is configured such that a base station receives, from a mobile station, a signal including information and data on the transmission mode which the mobile station has selected in accordance with a channel status, and decodes the data in accordance with the transmission mode.