PTRS Location in 5G Resource Blocks
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Solution Overview
Problem
User equipment devices in 5G communication systems face challenges in locating the correct phase tracking reference signal (PTRS) port and potential collisions with other reference signals, which affects network control and performance.
Innovation Solution
The method involves selecting a particular resource block (RB) to transmit PTRS, ensuring its location is defined and locatable by the UE device, and configuring PTRS to avoid collisions with other reference signals by using a combination of fixed and configurable offsets based on other RS configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PTRS is provided amongst scheduled RBs without defined location, then network flexibility is improved, but UE device ability to locate correct PTRS port deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-defining the location of PTRS within the scheduled RBs before the actual signal transmission. The network node configures the PTRS to be provided in a specific RB of the scheduled RBs, and this predefined location information is conveyed to the UE device through downlink control information. This allows the UE device to accurately locate the correct PTRS port without requiring complex real-time detection, thereby resolving the contradiction between network flexibility and UE device ability to locate the signal.
2Productivity
If PTRS is provided without collision avoidance configuration, then resource utilization is improved, but signal collision with other reference signals increases
Solution Approach 1:
The patent applies preliminary anti-action by configuring the network node to avoid providing PTRS in RBs that would cause collision with other reference signals before the transmission occurs. The network node is configured to determine whether providing PTRS in a scheduled RB would cause collision with other reference signals, and if so, the PTRS is provided in a different RB instead. This preventive approach resolves the contradiction by ensuring resource utilization is optimized without causing harmful signal collisions.
3Device complexity
If PTRS location is not defined, then system complexity is reduced, but measurement precision of PTRS location deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-defining the PTRS location through configuration before transmission. The network node configures which specific RB within the scheduled RBs will contain the PTRS, and this configuration is communicated to the UE device. This predefined location information simplifies the system by eliminating the need for complex real-time location determination mechanisms while ensuring precise PTRS location measurement by the UE device.
Data Source
AI summary
A method of providing a phase tracking reference signal (PTRS) amongst a set of resource blocks (RBs) and an apparatus therefor are provided. The method includes selecting a particular RB amongst the set of RBs (operation S41) and arranging the PTRS in the particular RB (operation S42). The PTRS is locatable by a user equipment (UE) device from amongst the set of RBs. Also provided are a set of resource blocks (RBs), a transmission/reception point (TRP), a UE device, a system including a TRP and a UE device, a method therefor and a computer-readable storage medium. The method and apparatus relate to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).