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EP-4740585-A1 - MANAGING MEASUREMENTS OF A PSCELL IN A RADIO ACCESS NETWORK

EP4740585A1EP 4740585 A1EP4740585 A1EP 4740585A1EP-4740585-A1

Abstract

A method and system for managing measurements of a PSCell are provided. The method includes receiving, by a user equipment (UE), a configuration for logging a successful PSCell report (SPR). Further, determining whether the SPR needs to be logged during a PSCell addition or a PSCell change. Further, determining whether a random access is performed during a PSCell addition or a PSCell change. The measurements of a source PSCell are stored in the SPR up to the moment the random access is completed by the UE, when the UE does not perform the random access. The measurements of the source PSCell are stored in the SPR until the UE sends a radio resource control (RRC) reconfiguration complete message when the UE does not perform the random access. In addition, transmitting the SPR including the measurements upon request to a network apparatus.

Inventors

  • ABRAHAM, Aby Kanneath

Assignees

  • Samsung Electronics Co., Ltd.

Dates

Publication Date
20260513
Application Date
20240731

Claims (10)

  1. A method performed by user equipment (UE) for managing measurements of a primary secondary cell group cell (PSCell) in a next generation radio access network (NG-RAN), comprising: receiving a configuration for logging a successful PSCell report (SPR); determining whether the SPR needs to be logged during a PSCell addition or a PSCell change; determining whether a random access is performed during a PSCell addition or a PSCell change; performing one of: storing measurements of a source PSCell in the SPR up to the moment the random access is completed by the UE when the UE performs the random access during the PSCell addition or the PSCell change; and storing the measurements of the source PSCell in the SPR until the UE sends a radio resource control (RRC) reconfiguration complete message when the UE does not perform the random access during the PSCell addition or the PSCell change; and transmitting the SPR including the measurements upon request to a network apparatus.
  2. The method of claim 1, comprising: determining synchronization signal block (SSB) measurements and channel state information reference signal (CSI-RS) measurements of the source PSCell; and setting the measurements of the source PSCell to include at least one of a cell level reference signal received power (RSRP), a reference signal received quality (RSRQ), an available signal to interference noise ratio (SINR), and reference signal (RS) index results in the SPR based on the SSB measurements and the CSI-RS measurements determined.
  3. The method of claim 1, comprising: determining whether the random access is performed during the PSCell addition or the PSCell change of a target PSCell; and storing measurements of the target PSCell in the SPR up to the moment the random access is completed by the UE (102)
  4. The method of claim 3, comprising: determining SSB measurements and CSI-RS measurements of the target PSCell; and setting the measurements of the target PSCell to include at least one of the RSRP, the RSRQ, the SINR, and the RS index results in the SPR based on the SSB measurements and the CSI-RS measurements determined.
  5. The method of claim 1, comprising: receiving the RRC reconfiguration message that includes the reconfiguration with sync command from the network apparatus, wherein the target PSCell is deactivated; and skipping logging of the SPR when the target PSCell is deactivated.
  6. A user equipment (UE) for managing measurements of a primary secondary cell (PSCell) in a next generation radio access network (NG-RAN), comprising: transceiver; memory storing one or more computer programs; and processor coupled to the memory and the transceiver, wherein the processor is configured to: receive a configuration for logging a successful PSCell report (SPR); determine whether the SPR needs to be logged during a PSCell addition or a PSCell change; determine whether a random access is performed during the PSCell change or the PSCell addition; perform one of: storing measurements of a source PSCell in the SPR up to the moment the random access is completed by the UE when the UE performs the random access during the PSCell addition or the PSCell change; and storing the measurements of the source PSCell in the SPR until the UE sends a radio resource control (RRC) reconfiguration complete message when the UE does not perform the random access during the PSCell addition or the PSCell change; and transmit the SPR including the measurements upon request to a network apparatus.
  7. The UE of claim 6, wherein the processor is configured to: determine synchronization signal block (SSB) measurements and channel state information reference signal (CSI-RS) measurements of the source PSCell; and set the measurements of the source PSCell to include at least one of a cell level reference signal received power (RSRP), a reference signal received quality (RSRQ), an available signal to interference noise ratio (SINR), and reference signal (RS) index results in the SPR based on the SSB measurements and the CSI-RS measurements determined, up to the moment the random access is completed by the UE (102).
  8. The UE of claim 6, wherein the processor is configured to: determine whether the random access is performed during the PSCell addition or the PSCell change of a target PSCell; and store measurements of the target PSCell in the SPR up to the moment the random access is completed by the UE
  9. The UE of claim 8, wherein the processor is configured to: determine SSB measurements and CSI-RS measurements of the target PSCell; and set the measurements of the target PSCell to include at least one of the RSRP, the RSRQ, the SINR, and the RS index results in the SPR based on the SSB measurements and the CSI-RS measurements determined, up to the moment the random access is completed by the UE (102).
  10. The UE of claim 6, wherein the processor is configured to: receive the RRC reconfiguration message that includes the reconfiguration with sync command from the network apparatus, wherein the target PSCell is deactivated; and skip logging of the SPR when the target PSCell is deactivated.

Description

MANAGING MEASUREMENTS OF A PSCELL IN A RADIO ACCESS NETWORK The disclosure relates to wireless communication networks. More particularly, the disclosure relates to methods, apparatus and systems for managing measurements of a PSCell in radio access networks. Considering the development of wireless communication from generation to generation, the technologies have been developed mainly for services targeting humans, such as voice calls, multimedia services, and data services. Following the commercialization of 5G (5th-generation) communication systems, it is expected that the number of connected devices will exponentially grow. Increasingly, these will be connected to communication networks. Examples of connected things may include vehicles, robots, drones, home appliances, displays, smart sensors connected to various infrastructures, construction machines, and factory equipment. Mobile devices are expected to evolve in various form-factors, such as augmented reality glasses, virtual reality headsets, and hologram devices. In order to provide various services by connecting hundreds of billions of devices and things in the 6G (6th-generation) era, there have been ongoing efforts to develop improved 6G communication systems. For these reasons, 6G communication systems are referred to as beyond-5G systems. 6G communication systems, which are expected to be commercialized around 2030, will have a peak data rate of tera (1,000 giga)-level bps and a radio latency less than 100μsec, and thus will be 50 times as fast as 5G communication systems and have the 1/10 radio latency thereof. In order to accomplish such a high data rate and an ultra-low latency, it has been considered to implement 6G communication systems in a terahertz band (for example, 95GHz to 3THz bands). It is expected that, due to severer path loss and atmospheric absorption in the terahertz bands than those in mmWave bands introduced in 5G, technologies capable of securing the signal transmission distance (that is, coverage) will become more crucial. It is necessary to develop, as major technologies for securing the coverage, radio frequency (RF) elements, antennas, novel waveforms having a better coverage than orthogonal frequency division multiplexing (OFDM), beamforming and massive multiple input multiple output (MIMO), full dimensional MIMO (FD-MIMO), array antennas, and multiantenna transmission technologies such as large-scale antennas. In addition, there has been ongoing discussion on new technologies for improving the coverage of terahertz-band signals, such as metamaterial-based lenses and antennas, orbital angular momentum (OAM), and reconfigurable intelligent surface (RIS). Moreover, in order to improve the spectral efficiency and the overall network performances, the following technologies have been developed for 6G communication systems: a full-duplex technology for enabling an uplink transmission and a downlink transmission to simultaneously use the same frequency resource at the same time; a network technology for utilizing satellites, high-altitude platform stations (HAPS), and the like in an integrated manner; an improved network structure for supporting mobile base stations and the like and enabling network operation optimization and automation and the like; a dynamic spectrum sharing technology via collison avoidance based on a prediction of spectrum usage; an use of artificial intelligence (AI) in wireless communication for improvement of overall network operation by utilizing AI from a designing phase for developing 6G and internalizing end-to-end AI support functions; and a next-generation distributed computing technology for overcoming the limit of UE computing ability through reachable super-high-performance communication and computing resources (such as mobile edge computing (MEC), clouds, and the like) over the network. In addition, through designing new protocols to be used in 6G communication systems, developing mecahnisms for implementing a hardware-based security environment and safe use of data, and developing technologies for maintaining privacy, attempts to strengthen the connectivity between devices, optimize the network, promote softwarization of network entities, and increase the openness of wireless communications are continuing. It is expected that research and development of 6G communication systems in hyper-connectivity, including person to machine (P2M) as well as machine to machine (M2M), will allow the next hyper-connected experience. Particularly, it is expected that services such as truly immersive extended reality (XR), high-fidelity mobile hologram, and digital replica could be provided through 6G communication systems. In addition, services such as remote surgery for security and reliability enhancement, industrial automation, and emergency response will be provided through the 6G communication system such that the technologies could be applied in various fields such as industry, medical care, autom