Positioning SRS Transmission in RRC_Inactive State
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Solution Overview
Problem
Current 5G communication systems face challenges in efficiently implementing positioning methods, particularly in IoT networks, where accurate terminal positioning is crucial for machine communication services.
Innovation Solution
The proposed solution involves a method and apparatus for transmitting UECapabilityInformation, receiving RRCRelease, transmitting a positioning SRS in RRC_INACTIVE state, and stopping the transmission of the positioning SRS if a predetermined first time point is reached, based on information in the RRCRelease message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning SRS transmission continues indefinitely in RRC_INACTIVE state, then positioning accuracy is improved, but energy consumption increases and network resources are wasted
Solution Approach 1:
The patent implements periodic transmission of positioning SRS in RRC_INACTIVE state with configurable transmission intervals and duration. The network can configure the terminal to transmit positioning signals periodically rather than continuously, allowing positioning measurements to be performed at specific intervals while reducing overall energy consumption and network resource usage.
Solution Approach 2:
The patent introduces dynamic control mechanisms where the transmission parameters of positioning SRS can be adjusted based on network conditions and terminal state. The network can modify transmission duration, interval, and other parameters dynamically to balance positioning accuracy requirements with energy conservation and resource efficiency.
2Use of energy by moving object
If positioning SRS transmission is stopped in RRC_INACTIVE state, then energy consumption is reduced, but positioning capability is lost
Solution Approach 1:
The patent enables periodic transmission of positioning SRS that can be activated or deactivated based on positioning needs. The network can configure the terminal to transmit positioning signals at periodic intervals rather than continuously, allowing positioning capability to be maintained when needed while reducing energy consumption during inactive periods.
Solution Approach 2:
The patent allows the network to pre-configure positioning transmission parameters and conditions before the terminal enters RRC_INACTIVE state. This preliminary configuration enables the terminal to resume positioning transmissions quickly when needed without requiring full re-establishment of positioning capabilities.
3Adaptability or versatility
If positioning SRS transmission is configured in RRC_INACTIVE state, then positioning service is maintained, but network complexity increases
Solution Approach 1:
The patent implements a unified RRCRelease message structure that can handle multiple scenarios including positioning SRS transmission continuation, termination, and parameter modification. This universal approach allows the network to manage positioning services in RRC_INACTIVE state using existing message formats and procedures, avoiding the need for separate dedicated messages and reducing network complexity.
Solution Approach 2:
The patent introduces feedback mechanisms where the terminal reports its positioning needs and transmission status to the network. The network uses this feedback information to dynamically adjust positioning SRS transmission configuration, enabling flexible positioning service maintenance while simplifying network management through centralized control based on terminal reports.
Data Source
AI summary
A method and apparatus for positioning in a mobile communication system are provided. Method for positioning includes transmitting a UECapabilityInformation, receiving a RRCRelease, transmitting, a positioning SRS in RRC_INACTIVE state and stopping transmission of the positioning SRS in RRC_INACTIVE state if a first time point is reached. The first time point is determined based on the second information in the RRCRelease message.