UE Relative Positioning Using UL SRS Without Extra Interference
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Solution Overview
Problem
Current 5G NR technology does not support relative positioning of User Equipments (UEs), which is essential for determining the distance and angular relationship between two UEs.
Innovation Solution
A method and apparatus that utilize UL Sounding Reference Signals (SRSs) configured by an access device to enable UEs to measure their relative position, reducing interference with cellular communication by using uplink resources for positioning between UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated positioning resources are allocated for UE relative positioning, then positioning accuracy is improved, but interference with cellular communication increases
Solution Approach 1:
The patent applies multi-functionality by enabling uplink SRS resources to serve dual purposes: both cellular communication (for uplink data transmission) and positioning (for measuring relative position between UEs). The access device configures SRS resources that UEs can use for both communication and positioning measurements, eliminating the need for separate dedicated positioning resources and thus avoiding additional interference with cellular communication.
2Adaptability or versatility
If separate positioning resources are allocated for UE positioning, then positioning function is improved, but device complexity increases
Solution Approach 1:
The patent merges the positioning function with existing cellular communication resources. Instead of allocating separate positioning resources, the system combines positioning measurements with uplink SRS resources already used for communication. The access device configures SRS resources that serve both communication and positioning purposes, and UEs perform both communication and positioning measurements using the same resources, thereby reducing overall system complexity.
Data Source
AI summary
Provided are positioning methods and apparatuses of a relative position between UEs, communication devices and storage media, a method includes: receiving relative position positioning indication sent by a core network, where the relative position positioning indication is for determining a relative position between a first UE and a second UE; and sending resource configuration based on the relative position positioning indication to the first UE and the second UE, where the resource configuration is for configuring transmission resources for one or more of the first UE and the second UE to transmit or receive one or more Uplink (UL) Sounding Reference Signals (SRSs) for sounding the relative position between the first UE and the second UE.