Uplink Channel Sounding Transmission Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current uplink channel sounding transmissions in telecommunication systems consume significant power and increase overhead signaling, as they are not efficiently controlled by the base station, which lacks knowledge of available uplink data in user equipment.
Innovation Solution
User equipment transmits channel sounding signals only when there is available uplink data and the data buffer will not be empty within a predetermined round-trip time, thereby reducing unnecessary transmissions and power consumption, and the base station interprets the absence or presence of these signals as implicit scheduling requests to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel sounding transmissions are performed according to assigned patterns, then uplink channel quality estimation is enabled, but power consumption in user equipment increases significantly
Solution Approach 1:
The base station performs preliminary scheduling of channel sounding transmissions based on predicted channel conditions and traffic patterns. The UE is pre-configured with transmission patterns and resources, allowing it to transmit channel sounding signals only when necessary for upcoming uplink data transmissions, rather than continuously or on-demand, thus reducing power consumption while maintaining reliable channel quality estimation.
Solution Approach 2:
The system implements feedback mechanisms where the base station receives channel quality information from channel sounding transmissions and uses this feedback to optimize future scheduling decisions. The base station adjusts transmission patterns and resources based on observed channel conditions and UE power status, creating a closed-loop system that balances channel quality estimation needs with power consumption reduction.
2Measurement precision
If channel sounding transmissions are performed frequently, then channel quality information is updated continuously, but overhead signaling increases
Solution Approach 1:
Instead of performing channel sounding transmissions at every scheduled opportunity or continuously, the system applies partial action by transmitting only when channel quality information is actually needed for upcoming uplink transmissions. The base station selectively schedules channel sounding based on traffic patterns and channel variability, reducing the quantity of signaling overhead while maintaining sufficient measurement precision for effective scheduling decisions.
3Productivity
If channel sounding signals are transmitted without checking uplink data availability, then transmission patterns are followed strictly, but unnecessary transmissions occur increasing load on control channels
Solution Approach 1:
The system dynamically adjusts channel sounding transmission behavior based on real-time uplink data availability at the UE. The UE checks its uplink buffer status before transmitting channel sounding signals and only transmits when data is available for upcoming transmission. This dynamic adaptation ensures that channel sounding transmissions are productive (support actual uplink data transmission) and reduces unnecessary control channel load.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
In a method of improved channel-sounding transmissions between a base station in communication with a user equipment in a telecommunication system, the user equipment receiving (SO) an assigned channel-sounding transmission pattern from the base station, and transmitting (Sl) a channel- sounding signal to the base station based on the assigned channel-sounding transmission pattern and on available uplink data at the user equipment.