Uplink Channel Resource Mapping for Flexible Symbol Allocation
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Solution Overview
Problem
In LTE systems, the increasing use of massive antenna technology and new transmission time units reduces the number of symbols available for uplink data transmission, necessitating a more efficient configuration for the physical uplink control channel (PUCCH) to accommodate both data and reference signals effectively.
Innovation Solution
The method involves mapping W complex-value symbols of an uplink channel onto a resource area 1 and a reference signal onto a resource area 2, with the UE determining the optimal distribution of symbols within one transmission time unit based on configuration information, allowing for flexible use of time-frequency resource units shared by multiple UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If massive antenna technology is applied to increase the number of symbols for sending reference signals, then the reference signal transmission capability is improved, but the quantity of symbols available for sending uplink data decreases
Solution Approach 1:
The patent segments the time-frequency resources into distinct regions: resource area 1 for uplink data and resource area 2 for reference signals. This segmentation allows independent allocation and optimization of resources for each function, resolving the contradiction by providing dedicated resources rather than competing for the same symbol pool.
Solution Approach 2:
The patent introduces flexible configuration dimensions for resource allocation, including the number of symbols Y for data, number of symbols C for reference signals, number of subcarriers F for data, and number of subcarriers D for reference signals. By adding these configurable dimensions, the system can adapt resource distribution to meet different requirements without fixed constraints.
2Area of stationary object
If the quantity of symbols for sending reference signals increases, then the reference signal coverage is improved, but the uplink data transmission efficiency deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation where the parameters Y, C, F, and D can be flexibly configured based on channel conditions, traffic requirements, and system load. This dynamic adjustment allows the system to optimize the balance between reference signal coverage and data transmission efficiency according to real-time needs, rather than using fixed allocations.
Solution Approach 2:
The patent changes the parameters of resource allocation by introducing configurable values for the number of symbols and subcarriers for both data and reference signals. By allowing these parameters to be adjusted, the system can adapt to different scenarios where either reference signal coverage or data transmission efficiency needs to be prioritized.
3Device complexity
If fixed resource allocation is used for PUCCH, then the system complexity is reduced, but the adaptability to different transmission scenarios deteriorates
Solution Approach 1:
The patent creates a universal resource allocation framework that can handle multiple transmission scenarios through a single flexible configuration mechanism. The same resource allocation structure supports different values of Y, C, F, and D, allowing it to adapt to various scenarios including different TTI lengths, CP configurations, and massive antenna deployments without requiring separate dedicated configurations for each case.
Data Source
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AI summary
Embodiments of the present invention provide a transmission method, user equipment, and a base station, and relate to the field of communications technologies, so that the user equipment can transmit information on an uplink channel with any quantity of symbols. The method is applied to user equipment UE, and includes: mapping, by the UE, W complex-value symbols of an uplink channel onto a resource area 1 of the UE, where the resource area 1 of the UE includes F discrete or contiguous subcarriers in Y symbols; mapping a reference signal corresponding to the uplink channel onto a resource area 2 of the UE, where the resource area 2 includes D discrete or contiguous subcarriers in C symbols; and sending, by the UE, signals of the resource area 1 and the resource area 2.