Beacon Positioning Reference Signal Reception in Wireless Systems
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Solution Overview
Problem
In wireless communication systems, especially in multi-node systems, efficient reception and measurement of reference signals for position determination are challenging due to the reduced transmission area and increased complexity of signal coordination among distributed nodes.
Innovation Solution
A method and apparatus for receiving beacon-positioning reference signals (B-PRSs) in a wireless communication system, involving configuration information for B-PRSs, including parameters for generating sequences, determining subframes, frequency shifts, resource blocks, and transmit powers, to enable efficient detection and measurement of B-PRSs by user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signals are transmitted from multiple distributed beacon apparatuses in a multi-node system, then position calculation accuracy is improved, but signal reception and measurement complexity increases
Solution Approach 1:
The patent segments the reference signal transmission by assigning different frequency shifts to different beacon apparatuses within the same cell. This segmentation allows the UE to distinguish and measure signals from multiple beacons simultaneously without excessive complexity, as each beacon's signal is separated in the frequency domain through orthogonal resource allocation.
Solution Approach 2:
The patent introduces frequency domain separation as an additional dimension for distinguishing beacon signals. By applying different frequency shifts (orthogonal frequency division multiplexing) to reference signals from different beacons, the system transforms the spatial separation problem into a frequency-domain separation problem, enabling efficient multi-beacon measurement.
2Reliability
If beacon apparatuses transmit reference signals with high power, then signal reception quality is improved, but installation and operational costs increase
Solution Approach 1:
The patent merges the reference signal transmission function into existing beacon apparatuses that are already deployed for other purposes (such as positioning beacons or low-power nodes). By combining multiple functions into existing infrastructure, the system avoids the need for high-power dedicated reference signal transmitters, reducing installation and operational costs while maintaining signal quality through coordinated multi-node transmission.
3Area of stationary object
If multiple beacon apparatuses are deployed to improve position determination, then coverage and accuracy are improved, but system coordination complexity increases
Solution Approach 1:
The patent creates a universal reference signal structure that can be used by multiple beacon apparatuses simultaneously. By defining a common signal format with cell-specific parameters that work across all beacons in a cell, the system enables multi-beacon deployment without proportionally increasing coordination complexity. The same reference signal structure serves all beacons, simplifying UE processing and network management.
Data Source
AI summary
A method for receiving a reference signal for defining a location in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving, from a serving cell, beacon-positioning reference signal (B-PRS) configuration information transmitted by at least one beacon device; and detecting the B-PRS by using the B-PRS configuration information, wherein the B-PRS configuration information includes B-PRS group configuration information for at least one beacon device group, and the B-PRS group configuration information can include parameters for generating sequences of the B-PRS transmitted by each beacon device belonging to the corresponding group.