Duty-Cycle Positioning SRS Configuration for 5G Power Efficiency
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Solution Overview
Problem
Current mobile communication systems, such as 5G NR, face challenges in efficiently managing periodic positioning sounding reference signals (SRS) which lead to resource wastage and increased power consumption due to short periodicity, especially when positioning requests are not imminent, affecting battery life and network efficiency.
Innovation Solution
Implementing a duty-cycle based configuration for periodic SRS transmissions, where the SRS status is dynamically switched between active and muted intervals based on expected positioning request timing, optimizing resource usage and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If periodic positioning sounding reference signals are transmitted with short periodicity, then positioning accuracy and response time are improved, but resource wastage and power consumption increase
Solution Approach 1:
The patent implements duty-cycle based periodic positioning SRS transmission where the SRS is transmitted only during specific time intervals (when positioning requests are expected) rather than continuously. This periodic activation pattern reduces power consumption and resource usage while maintaining positioning accuracy when needed, by configuring the UE to transmit positioning SRS only during active intervals and remain muted during inactive intervals.
Solution Approach 2:
The patent dynamically adjusts the transmission status of positioning SRS between active and muted states based on expected positioning request timing. The network entity configures duty-cycle parameters that enable the UE to switch transmission states dynamically, optimizing the balance between positioning performance and power consumption according to actual network needs.
2Loss of time
If periodic positioning sounding reference signals are transmitted frequently, then positioning latency is reduced, but network resource efficiency deteriorates
Solution Approach 1:
The patent applies periodic action by configuring duty-cycle intervals for positioning SRS transmission, where the UE transmits SRS only during scheduled active intervals rather than continuously. This reduces network resource consumption and improves overall network efficiency while maintaining low positioning latency when positioning requests are anticipated during active intervals.
3Reliability
If continuous positioning sounding reference signal transmission is maintained, then positioning availability is improved, but battery life deteriorates
Solution Approach 1:
The patent implements periodic duty-cycle based transmission where the positioning SRS is activated only during specific intervals when positioning requests are expected, rather than continuous transmission. This significantly extends battery life by reducing the duration of radio transmissions while maintaining positioning availability during active intervals through pre-configured duty-cycle patterns.
Solution Approach 2:
The UE autonomously manages its positioning SRS transmission according to pre-configured duty-cycle parameters, switching between active and muted states without continuous network control. This self-service approach optimizes battery life by eliminating unnecessary transmissions while ensuring positioning functionality is available when needed.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for duty-cycle based positioning sounding reference signals. A method may include receiving, at a user equipment, configuration information of at least one periodic positioning sounding reference signal. The configuration information may include at least one time interval and at least one transmission resource associated with the at least one time interval. The method may also include transmitting the at least one periodic positioning sounding reference signal to a network entity based on the configuration information. The at least one periodic positioning sounding reference signal may be in a first transmission status or a second transmission status in accordance to the at least one time interval. The at least one time interval may occur periodically.