TDD-LTE Shaping Filter Resource Reduction
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Solution Overview
Problem
The high resource consumption of shaping filters at the transmitting and receiving sides in a TDD-LTE system poses a challenge, as existing methods fail to effectively reduce resource usage while maintaining system performance.
Innovation Solution
A time-division duplex multiplexing filtering method and device that generates time slot coordinates for data transmission and reception, allowing for shaping filtering on a single-channel continuous data stream, which reduces the need for separate shaping filters at both sides by performing filtering at different time slices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-order shaping filtering device is used at transmitting side and receiving side respectively, then system performance is ensured, but resource consumption (calculation units and storage units) increases significantly
Solution Approach 1:
The patent merges the shaping filtering functions of the transmitting side and receiving side into a single shaping filter located at the transmitting side. By combining these separate filtering devices into one shared resource, the system maintains the required high-order shaping filtering capability while reducing the total number of calculation units and storage units from two sets to one set, thereby resolving the contradiction between ensuring system performance and reducing resource consumption
Solution Approach 2:
The single shaping filter at the transmitting side serves dual purposes: it performs shaping filtering for both the transmitting side signals and the receiving side signals. This multi-functional approach allows one filtering device to replace what would traditionally require two separate devices, reducing resource consumption while maintaining the reliability needed for system performance
2Quantity of substance
If calculation amount of the shaping filter is reduced, then resource consumption decreases, but system performance cannot be ensured
Solution Approach 1:
By merging the shaping filtering functions into a single high-order filter at the transmitting side, the patent maintains the full calculation capability needed for system performance while reducing resource consumption. The single filter processes both transmitting and receiving signals, ensuring that the calculation amount is sufficient for performance requirements without duplicating resources
3Quantity of substance
If working clock frequency of the shaping filter is improved to perform multi-carrier multiplexing, then calculation units and storage units are saved, but resources cannot be saved further after clock frequency reaches saturation
Solution Approach 1:
The patent merges multiple carrier processing functions into a single shaping filter that handles multi-carrier multiplexing at the transmitting side. This approach saves resources by eliminating the need for separate filters for each carrier, and unlike clock frequency optimization, it provides continuous resource savings without hitting a saturation point where further savings become impossible
Data Source
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AI summary
The disclosure provides a time-division duplex multiplexing filtering method. The method includes that: time slot coordinates used for data transmission and reception are generated according to a chip rate of baseband data of a TDD-LTE system; data of a transmitting side and a receiving side are received at corresponding time slices according to the time slot coordinates; shaping filtering is performed on the received data; and the filtered data are parsed and the parsed data are transmitted at corresponding time slices. The disclosure also provides a time-division duplex multiplexing filtering device. Since the time slot coordinates are generated and time-division duplex multiplexing shaping filtering is performed on the data of the transmitting side and the receiving side at different time slices in the disclosure, a shaping filter does not need to be set separately at the transmitting side and the receiving side, thereby reducing the number of calculation units and storage units and thus reducing the cost of the shaping filter.