Positioning SRS Transmission Control in RRC_INACTIVE State
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Solution Overview
Problem
The 5G communication system faces challenges in accurately determining the positioning of terminals, especially in scenarios where traditional methods are inefficient, such as in RRC_INACTIVE states, due to limitations in existing techniques for transmitting and receiving positioning signals.
Innovation Solution
The implementation of a method and apparatus that transmit UECapabilityInformation, provideCapabilities, and transmit positioning SRS in a specific uplink in RRC_INACTIVE, while stopping the transmission of positioning SRS based on a specific message indicating to stop SRS transmission, to enhance positioning capabilities in 5G systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning SRS transmission is maintained in RRC_INACTIVE state, then positioning accuracy is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent implements dynamic control of positioning SRS transmission by introducing a configurable parameter that allows the terminal to switch between continuous transmission and transmission based on specific events or messages. This dynamic approach maintains positioning accuracy when needed while reducing device complexity and power consumption during periods when positioning is less critical.
Solution Approach 2:
The patent changes the transmission parameter from a fixed state to a configurable state by introducing a new parameter that controls SRS transmission behavior in RRC_INACTIVE state. This parameter can be set to enable or disable transmission based on network requirements, terminal capabilities, and positioning needs, thereby resolving the contradiction between maintaining accuracy and reducing complexity.
2Measurement precision
If positioning SRS transmission is continuous in RRC_INACTIVE state, then positioning accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic or event-triggered positioning SRS transmission instead of continuous transmission. The terminal transmits positioning SRS based on specific events, messages from the network, or time intervals, which maintains positioning accuracy when needed while significantly reducing power consumption during periods when positioning updates are not required.
Solution Approach 2:
The patent introduces dynamic control mechanisms that adjust transmission behavior based on current positioning needs, network instructions, and terminal state. This dynamic approach ensures that power is consumed only when positioning accuracy is actually needed, rather than maintaining continuous transmission.
3Use of energy by moving object
If positioning SRS transmission is stopped in RRC_INACTIVE state, then power consumption is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent implements preliminary configuration where the network provides instructions or parameters to the terminal before the terminal enters RRC_INACTIVE state. These preliminary configurations include event triggers, message indicators, or time-based conditions that determine when positioning SRS should be transmitted, ensuring positioning accuracy is maintained at critical moments while saving power during non-critical periods.
Solution Approach 2:
The patent introduces feedback mechanisms where the network can send messages to the terminal to trigger or adjust positioning SRS transmission in RRC_INACTIVE state. This feedback loop ensures that positioning accuracy is maintained when the network requires it, while allowing power savings when positioning is less critical, thereby resolving the contradiction between power consumption and positioning accuracy.
Data Source
AI summary
A method and apparatus for positioning in a mobile communication system are provided. Method for positioning includes transmitting a UECapabilityInformation, transmitting a provideCapabilities, receiving a RRCRelease, transmitting positioning SRS in a specific uplink in RRC_INACTIVE and stopping transmission of positioning SRS in RRC_INACTIVE if a specific message including a one bit information indicating to stop SRS transmission.