UE Non-Cellular Receiver Status Reporting for Mobility Reliability
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Solution Overview
Problem
UEs often fail to perform and report configured non-cellular measurements, creating issues for cellular networks, which can lead to mobility failures and network performance degradation.
Innovation Solution
UEs and network nodes implement methods to report additional status information about non-cellular receiver enablement and coverage during measurement durations, including indications of receiver enablement and coverage status for various non-cellular signals like WLAN, Bluetooth, and GNSS, allowing networks to assess and improve mobility and measurement reporting reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UEs perform non-cellular measurements (WLAN, Bluetooth, GNSS), then measurement reporting capability is improved, but receiver reliability deteriorates due to receiver disablement or out-of-coverage conditions
Solution Approach 1:
The patent implements feedback mechanisms where UEs report receiver status and coverage status to the network. The network uses this feedback to determine whether to request or accept measurement reports, creating a closed-loop system that adapts to actual receiver conditions and improves overall measurement reporting reliability.
Solution Approach 2:
The patent requires UEs to perform preliminary actions of determining receiver status and coverage status before attempting measurements. This preliminary assessment prevents wasted measurement attempts when receivers are disabled or coverage is unavailable, improving the reliability of subsequent measurement reports.
2Reliability
If UEs report detailed measurement information, then network mobility management is improved, but information loss reduces due to incomplete measurement reports
Solution Approach 1:
The patent segments the measurement reporting process into distinct status indicators (receiver status, coverage status) separate from the actual measurement data. This segmentation allows the network to receive partial information when conditions permit and understand the limitations of each report, improving overall mobility management despite incomplete data.
Solution Approach 2:
The patent introduces status indicator messages as intermediaries between the UE measurement capabilities and the network's mobility management decisions. These intermediaries convey information about measurement availability and reliability, allowing the network to make informed decisions even when complete measurement data is not available.
3Reliability
If networks request comprehensive non-cellular measurements, then mobility optimization is improved, but device complexity increases due to multiple receiver status tracking
Solution Approach 1:
The patent merges the tracking of multiple receiver statuses (WLAN, Bluetooth, GNSS) and coverage statuses into a unified reporting framework. By combining these status checks into a single measurement reporting process, the patent reduces the operational complexity for UEs while still providing comprehensive information to the network for mobility optimization.
Data Source
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AI summary
Embodiments include methods for a user equipment (UE) configured to operate in a cellular radio access network (RAN). Such methods include receiving, from the cellular RAN, a measurement reporting configuration comprising identification of non-cellular signals, of one or more types, for which measurements are requested from the UE. Such methods include measuring at least the identified non-cellular signals and transmitting, to the cellular RAN, a measurement report including one or more of the following for each particular type of identified non-cellular signal: a first indication of whether the UE's corresponding non-cellular receiver was enabled during a measurement duration, and a second indication of whether the UE was out-of-coverage during the measurement duration in relation to all identified non-cellular signals of the particular type. Other embodiments include complementary methods for a network node, as well as UEs and network nodes configured to perform such methods.