Terminal Channel Sounding via Network Resource Allocation
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Solution Overview
Problem
Current wireless communication technologies face inefficiencies in channel sounding between terminals, leading to low communication efficiency and high transmission delay, particularly in direct device-to-device communication scenarios.
Innovation Solution
A method where a terminal actively requests resource allocation from a network side device for channel sounding, using a flexible subframe to transmit sounding control signaling and sounding reference signals, allowing for quick and effective channel assessment between terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminals perform channel sounding using traditional broadcast-based physical layer methods, then communication can be established between terminals, but communication efficiency is low and transmission delay is high
Solution Approach 1:
The network side device pre-configures transmission resources for sounding reference signals and allocates them to terminals before actual channel sounding is needed. This advance preparation eliminates resource allocation delays during actual communication, directly improving communication efficiency and reducing transmission delay
Solution Approach 2:
The network side device acts as an intermediary that manages and coordinates channel sounding resources between multiple terminals. By controlling resource allocation and scheduling through the network side device, the system achieves more efficient resource utilization compared to direct terminal-to-terminal broadcasting, thereby improving overall communication efficiency
2Productivity
If the network side device configures transmission resources for sounding reference signals, then channel sounding becomes more efficient, but resource allocation complexity increases
Solution Approach 1:
The resource allocation process is segmented into distinct phases: configuration phase where the network side device defines resource pools, allocation phase where specific resources are assigned to terminals, and execution phase where terminals perform channel sounding. This segmentation simplifies the overall complexity by breaking down the resource management into manageable, standardized steps
Solution Approach 2:
The system uses parameter-based resource configuration where the network side device defines resource characteristics (time, frequency, spatial parameters) that can be flexibly adjusted. By changing parameters rather than redesigning the entire allocation mechanism, the system maintains efficiency while adapting to different scenarios without proportionally increasing complexity
3Measurement precision
If terminals use dedicated transmission resources for sounding reference signals, then channel assessment accuracy improves, but resource consumption increases
Solution Approach 1:
The configured transmission resources serve multiple purposes: they are used for sounding reference signals during channel sounding, and can be reused or repurposed for actual data transmission. This multi-functionality ensures accurate channel assessment while reducing overall resource consumption by eliminating the need for separate dedicated resources solely for sounding
Data Source
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AI summary
This application relates to the field of wireless communication technologies, and provides a method for performing channel sounding, a network side device, and a terminal. The method includes: sending, by a first terminal, a resource scheduling request to a network side device when the first terminal needs to communicate with a second terminal, where the resource scheduling request is used to request the network side device to allocate a transmission resource used for channel sounding between the first terminal and the second terminal, and the resource scheduling request carries information about the second terminal; and receiving, by the first terminal, a sounding reference signal that is sent by the second terminal, and obtaining information about a channel used for communication between the first terminal and the second terminal. In solutions provided in embodiments, channel sounding between terminals can be quickly and effectively performed, thereby increasing efficiency of communication between the terminals.