UE Capability Exchange for Positioning Accuracy
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Solution Overview
Problem
Current positioning technologies in user equipment (UE) systems, such as those using Long Term Evolution (LTE) and Fifth Generation (5G) New Radio (NR) standards, face limitations in determining the transmission and reception capabilities of UE, which affect the accuracy and range of positioning measurements, as they do not support indications of transmission power class, number of antennas, and other capabilities necessary for optimal positioning operations.
Innovation Solution
The implementation of a protocol, like Long Term Evolution Positioning Protocol (LPP) or New Radio Positioning Protocol A (NRPPa), that allows UE to provide indications of its transmission and reception capabilities, including power class and antenna numbers, to the location server, enabling the server to adjust assistance data and expand the list of accessible access nodes for more accurate positioning measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current positioning technologies (LTE/5G) are used without UE capability indications, then the system maintains simplicity in protocol design, but positioning accuracy and measurement range are limited
Solution Approach 1:
The patent applies preliminary action by having the UE provide capability indications (transmission power class, number of antennas, frequency ranges) to the location server before positioning measurements are performed. This allows the location server to pre-configure appropriate assistance data and select suitable access nodes based on the UE's capabilities, thereby improving positioning accuracy without adding complexity during the actual measurement process.
Solution Approach 2:
The patent introduces capability indication messages as an intermediary mechanism between the UE and location server. These messages convey essential UE capabilities (power class, antenna count, supported frequency ranges) that enable the location server to make informed decisions about positioning configuration, thus improving measurement precision while maintaining protocol manageability through standardized information exchange.
2Adaptability or versatility
If UE capability indications are implemented, then the location server can expand the list of accessible access nodes, but the protocol requires additional message exchanges and processing
Solution Approach 1:
The patent reduces time loss by performing capability indication exchanges during initial connection or positioning setup phases, before actual positioning measurements are required. This preliminary exchange allows the location server to prepare assistance data and access node selections in advance, so that when positioning measurements are needed, the system can proceed efficiently without additional back-and-forth delays.
3Length of stationary object
If transmission power class and antenna information are indicated, then positioning measurement range is extended, but more device parameters need to be tracked and managed
Solution Approach 1:
The patent extracts only the essential UE capability parameters needed for positioning (transmission power class, number of antennas, supported frequency ranges) and conveys them through dedicated capability indication messages. By selecting and transmitting only the most relevant parameters rather than all possible device specifications, the system extends positioning range while keeping parameter management complexity manageable at both UE and network sides.
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods to provide network-based user equipment receive/transmit capability exchange for positioning in wireless communication systems.