SRS Parameter Control via MAC CE for Flexible Uplink Signaling
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Solution Overview
Problem
In next-generation mobile communication systems, the lack of flexible control over sounding reference signal (SRS) parameters leads to inefficient resource usage, deteriorating communication throughput and quality.
Innovation Solution
A terminal and base station that utilize Medium Access Control (MAC) signaling to flexibly control SRS parameters, including SRS resource sets and triggers, through new MAC control elements (MAC CEs) and DCI formats, allowing for enhanced flexibility in SRS configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SRS parameters are not flexibly configured, then the system structure remains simple, but resource usage efficiency and communication throughput deteriorate
Solution Approach 1:
The patent implements dynamic control of SRS parameters by introducing a MAC CE mechanism that allows the gNB to flexibly adjust SRS configuration parameters (such as slot offsets, resource allocations, and timing) based on real-time communication needs. This dynamic adjustment capability enables the system to adapt to varying channel conditions and optimize resource usage efficiency without requiring complex reconfiguration procedures.
Solution Approach 2:
The patent employs parameter changes by allowing flexible modification of SRS configuration parameters through MAC CE signaling. The gNB can change parameters like slot offset, SRS resource set indexing, and timing information dynamically. This parameter flexibility enables optimization of communication throughput and resource allocation while maintaining manageable system complexity through standardized parameter adjustment mechanisms.
2Reliability
If SRS parameters are not flexibly configured, then the control mechanism remains simple, but communication quality deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where the gNB monitors communication quality metrics and uses this information to adjust SRS parameters dynamically via MAC CE. The feedback loop allows the system to optimize communication quality by adapting SRS configuration based on actual channel conditions, signal strength, and interference levels, while the standardized feedback protocol keeps the control mechanism manageable.
Solution Approach 2:
The patent introduces dynamic parameter adjustment capabilities that allow real-time optimization of communication quality. The MAC CE mechanism enables the gNB to flexibly modify SRS timing, resource allocation, and configuration parameters based on current network conditions, thereby improving communication reliability without requiring overly complex control structures.
3Productivity
If SRS parameters are not flexibly configured, then the system remains simple to implement, but throughput is reduced
Solution Approach 1:
The patent applies universality by designing a MAC CE-based control mechanism that can handle multiple SRS parameter configurations through a single standardized framework. The same MAC CE structure supports various parameter adjustments (slot offset, resource allocation, timing), making the system easy to implement while achieving high throughput through flexible parameter control. This multi-functional approach avoids the need for separate complex control mechanisms for each parameter type.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes: a receiving section that receives a medium access control-control element (MAC CE) related to a parameter for a sounding reference signal (SRS) resource set or an SRS resource; and a control section that controls SRS transmission, based on the parameter. According to one aspect of the present disclosure, it is possible to flexibly control an SRS parameter.