5G UE Positioning Using Reference Signals Without RRC Connection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 5G communication systems face inefficiencies in positioning measurement due to the need for user equipment (UE) to enter an RRC connected state, leading to significant signaling overhead and network delay, especially when performing positioning measurements in RRC idle or inactive states.
Innovation Solution
The method allows UE to perform positioning measurements using reference signals in RRC unconnected states, including downlink and uplink measurements, reducing signaling overhead and improving network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE enters RRC connected state to perform positioning measurement, then positioning measurement can be performed, but signaling overhead increases and network delay increases
Solution Approach 1:
The network performs preliminary actions by configuring the UE with downlink reference signal configuration information and uplink reference signal configuration information before the UE needs to perform positioning measurements. This allows the UE to have all necessary configuration data ready in advance, enabling it to perform positioning measurements directly in RRC idle state without first transitioning to RRC connected state, thereby reducing network delay while maintaining positioning measurement capability
2Measurement precision
If UE enters RRC connected state to perform positioning measurement, then positioning measurement can be performed, but signaling overhead increases
Solution Approach 1:
The patent extracts the essential positioning measurement function from the RRC connected state requirement. By separating the positioning measurement capability from the need for RRC connection, the system allows UE to perform positioning measurements in RRC idle state. The network side extracts and provides only the necessary reference signal configuration information through system information blocks or RRC signaling, eliminating the need for full RRC connection and associated signaling overhead while preserving positioning measurement functionality
3Device complexity
If UE performs positioning measurement in RRC idle state, then signaling overhead is reduced, but positioning measurement accuracy may be affected
Solution Approach 1:
The patent applies universality by enabling the UE to perform multiple functions in RRC idle state. The UE not only performs positioning measurements using downlink reference signals but also transmits uplink reference signals and receives positioning measurement results. This multi-functional capability in RRC idle state eliminates the need for separate RRC connected state transitions, reducing signaling overhead while maintaining positioning measurement accuracy through comprehensive reference signal configuration
Data Source
AI summary
The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure provides a method performed by a user equipment (UE), comprising: obtaining configuration information of a reference signal for positioning measurement, wherein the reference signal includes at least one of a first signal for downlink positioning measurement or a second signal for uplink positioning measurement; and performing an operation related to the positioning measurement in a radio resource control (RRC) idle state or a RRC inactive state.