Dynamic Processing Level Selection for Uplink Coordinated Multipoint
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Solution Overview
Problem
Coordinated multipoint uplink transmission in wireless communication systems faces challenges in efficiently managing data processing levels across base stations, leading to excessive backhaul load and reduced combination gain due to the need for pre-processing and data transfer.
Innovation Solution
A method where base stations dynamically choose the processing level for data reporting to a coordinating device based on quality, minimizing data transfer while maintaining acceptable decoding success, and the coordinating device combines data from multiple stations to enhance decoding accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If base stations perform more pre-processing on received data, then the amount of data to be transferred to the coordinating device is reduced, but the combination gain by combining data from different base stations is reduced
Solution Approach 1:
The patent applies dynamics by making the data processing level configurable and adaptable. Different processing levels (transport block level, code block level, soft bit level, IQ data level) can be dynamically selected based on system conditions, backhaul capacity, and performance requirements, allowing the system to optimize between data reduction and combination gain in real-time operations
Solution Approach 2:
The patent implements parameter changes by introducing multiple processing levels with varying degrees of data transformation. The system can change the processing level parameter to adjust the balance between reducing backhaul data quantity and maintaining data quality for combination, thereby resolving the contradiction between these two opposing requirements
2Use of energy by stationary object
If base stations transfer data on higher processing levels (e.g., transport blocks), then less processing effort is required at the coordinating device, but more backhaul capacity is required
Solution Approach 1:
The patent applies parameter changes by introducing a configurable processing level parameter that determines the degree of data processing before transmission. This allows the system to adjust the balance between backhaul data volume and coordinating device processing effort based on current system conditions and constraints
3Reliability
If base stations transfer data on lower processing levels (e.g., IQ data), then more combination gain can be achieved, but more backhaul capacity is required
Solution Approach 1:
The patent implements parameter changes by allowing dynamic selection of processing levels from IQ data (lowest level with highest combination gain) to transport blocks (highest level with lowest data volume). This parameter adjustment mechanism enables the system to optimize the trade-off between combination gain and backhaul capacity requirements
Data Source
AI summary
The invention concerns a method for uplink transmission of data from a user terminal (UE), wherein the data are received by base stations (eNB1, eNB2, eNB3) on a wireless interface, at least one of the base stations (eNB2, eNB3) determines a quality of the received data on at least one processing level, the at least one of the base stations (eNB2, eNB3) determines a respective dedicated processing level of the data that will be used for sending the data to a coordinating device (eNB1) based on the at least one quality, the at least one of the base stations (eNB2, eNB3) sends the data to the coordinating device (eNB1) on the respective dedicated processing level, and the coordinating device (eNB1) determines decoded data by means of the data, a base station, a coordinating device, and a communication network therefor.