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EP-4740600-A1 - METHODS AND APPARATUS FOR HANDLING TEMPORARY CAPABILITY RESTRICTION AND REMOVAL IN A WIRELESS COMMUNICATION SYSTEM

EP4740600A1EP 4740600 A1EP4740600 A1EP 4740600A1EP-4740600-A1

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide a method and a system for handling temporary capability restriction and removal in a 5G network. The method includes transmitting an informing message to a network apparatus (202). The informing message indicates that a user equipment (UE) (102) has a temporary capability restriction. Further, receiving a configuration for reporting the temporary capability restrictions. Further, determining that the UE (102) does not has the temporary capability restriction as configured by the network apparatus (202). Further, generating a UE assistance information (UAI) message to be transmitted to the network apparatus (202) in response to determining that the UE (102) does not has temporary capability restriction. In addition, transmitting the UAI message to the network apparatus (202). The UAI message is transmitted with an empty capability restriction that indicates a removal of the temporary capability restriction.

Inventors

  • ABRAHAM, Aby Kanneath
  • SHRIVASTAVA, VINAY KUMAR
  • RAJENDRAN, Sriganesh

Assignees

  • Samsung Electronics Co., Ltd.

Dates

Publication Date
20260513
Application Date
20240912

Claims (15)

  1. A method for handling temporary capability restriction and removal in a 5G network, comprising: transmitting, by a user equipment (UE) (102), an informing message to a network apparatus (202), wherein the informing message indicates that the UE (102) has a temporary capability restriction; receiving, by the UE (102), a configuration for reporting the temporary capability restrictions; determining, by the UE (102), that the UE (102) does not have the temporary capability restriction to be reported based on the configuration from the network apparatus (202); generating, by the UE (102), a UE assistance information (UAI) message to be transmitted to the network apparatus (202) in response to determining that the UE (102) does not have temporary capability restriction; and transmitting, by the UE (102), the UAI message to the network apparatus (202), wherein the UAI message is transmitted with an empty capability restriction that indicates a removal of the temporary capability restriction.
  2. The method of claim 1, wherein the temporary capability restriction is a multi-SIM (MUSIM) capability restriction, and wherein the informing message is included in at least one of a RRC setup complete message, a RRC resume complete message, and a RRC reestablishment complete message.
  3. A method for handling temporary capability restriction and removal in a 5G network, comprising: receiving, by a user equipment (UE) (102), a reconfiguration with sync message from a network apparatus (202); determining, by the UE (102), whether the UE (102) has initiated a transmission of a UE assistance information (UAI) message requesting for a temporary capability restriction before receiving the reconfiguration with sync message within a fixed time; starting, by the UE (102), a multi-SIM (MUSIM) wait timer associated with the UE (102); or restarting, by the UE (102), the MUSIM wait timer associated with the UE (102); wherein a timer value of the MUSIM wait timer is set to a value present in a MUSIM capability restriction configuration when the MUSIM wait timer is started or restarted, and wherein the fixed time is 1 second.
  4. The method of claim 3, comprising: receiving, by the UE (102), a radio resource control (RRC) reconfiguration message from the network apparatus (202); determining, by the UE (102), whether the RRC reconfiguration message is applied due to at least ne of a conditional reconfiguration execution and a lower-layer triggered motility (LTM) cell switch procedure, and whether the UE (102) has initiated the transmission of the UAI message requesting for the temporary capability restriction; starting, by the UE (102), the MUSIM wait timer associated with the UE (102); or restarting, by the UE (102), the MUSIM wait timer associated with the UE (102); wherein the timer value of the MUSIM wait timer is set to the value present in a MUSIM capability restriction configuration.
  5. The method of claim 4, comprising: retransmitting, by the UE (102), the UAI message to the network apparatus (202) to request for the temporary capability restriction.
  6. A method for handling temporary capability restriction and removal in a 5G network, comprising: configuring, by a network apparatus (202), at least one configuration for a user equipment (UE) (102) to reports the temporary capability restrictions, wherein the configuration comprises at least one filter; generating, by the network apparatus (202), a capability restriction message to be transmitted to a second network apparatus, wherein the capability restriction message includes at least one of the temporary capability restrictions reported by the UE (102) and the at least one filter configured; and transmitting, by the network apparatus (202), the capability restriction message to the second network apparatus
  7. The method of claim 6, wherein the at least one filter includes a band filter, a band combination filter, and a frequency filter, wherein the temporary capability restrictions include a preference of the UE (102) on secondary cells (SCells) to be released, serving cells of the UE (102) having a restricted capability, at least one band of the UE (102) having a restricted capability, and at least one band of the UE (102) to be avoided for temporary capabilities restriction purposes, and wherein the network apparatus (202) is a master node (MN) and the second network apparatus is a secondary node (SN), and wherein the network apparatus (202) and the second network apparatus are in communication using a new radio dual connectivity (NR-DC).
  8. A user equipment (UE) (102) for handling temporary capability restriction and removal in a 5G network, comprising: a memory (106); a processor (104) coupled to the memory (106); and a first controller (110) communicatively coupled to the memory (106) and the processor (104), wherein the first controller (110): transmits an informing message to a network apparatus (202), wherein the informing message indicates that the UE (102) has a temporary capability restriction; receiving a configuration for reporting the temporary capability restrictions; determines that the UE (102) does not have the temporary capability restriction to be reported based on the configuration from the network apparatus (202); generates a UE assistance information (UAI) message to be transmitted to the network apparatus (202), wherein the UAI message is transmitted with an empty capability restriction that indicates a removal of the temporary capability restriction; and transmits the UAI message to the network apparatus (202), wherein the UAI message is transmitted with an empty capability restriction that indicates a removal of the temporary capability restriction.
  9. The UE (102) of claim 8, wherein the temporary capability restriction is a multi-SIM (MUSIM) capability restriction, and wherein the informing message is included in at least one of a RRC setup complete message, a RRC resume complete message, and a RRC reestablishment complete message.
  10. The UE (102) of claim 8, wherein the first controller (110): receives a reconfiguration with sync message from the network apparatus (202); determines whether the UE (102) has initiated a transmission of a UE assistance information (UAI) message requesting for a temporary capability restriction before receiving the reconfiguration with sync message within a fixed time; and starts a multi-SIM (MUSIM) wait timer associated with the UE (102); or restarts the MUSIM wait timer associated with the UE (102), wherein a timer value of the MUSIM wait timer is set to a value present in a MUSIM capability restriction configuration when the MUSIM wait timer is started or restarted, wherein the fixed time is 1 second.
  11. The UE (102) of claim 9, wherein the first controller (110): receives a radio resource control (RRC) reconfiguration message from the network apparatus (202); determines whether the RRC reconfiguration message is applied due to at least one of a conditional reconfiguration execution and a lower-layer triggered motility (LTM) cell switch procedure, and whether the UE (102) has initiated the transmission of the UAI message requesting for the temporary capability restriction; and starts the MUSIM wait timer associated with the UE (102); or restarts the MUSIM wait timer associated with the UE (102), wherein the timer value of the MUSIM wait timer is set to the value present in a MUSIM capability restriction configuration.
  12. The UE (102) of claim 10, wherein the first controller: retransmits the UAI message to the network apparatus (202) to request for the temporary capability restriction.
  13. A network apparatus (202) for handling temporary capability restriction and removal in a 5G network, comprising: a memory (106); a processor (104) coupled to the memory (106); and a second controller (204) communicatively coupled to the memory (106) and the processor (104), wherein the second controller (204): configures at least one configuration for a user equipment (UE) (102) to report the temporary capability restrictions, wherein the configuration comprises at least one filter; generates a capability restriction message to be transmitted to a second network apparatus, wherein the capability restriction message includes at least one of the temporary capability restrictions reported by the UE (102) and the at least one filter configured; and transmits the capability restriction message to the second network apparatus.
  14. The network apparatus (202) of claim 13, wherein the at least one filter includes a band filter, a band combination filter, and a frequency filter.
  15. The network apparatus (202) of claim 19, wherein the temporary capability restrictions include a preference of the UE (102) on secondary cells (SCells) to be released, serving cells of the UE (102) having a restricted capability, at least one band of the UE (102) having a restricted capability, and at least one band of the UE (102) to be avoided for temporary capabilities restriction purposes, and wherein the network apparatus (202) is a master node (MN) and the second network apparatus is a secondary node (SN), and wherein the network apparatus (202) and the second network apparatus are in communication using a new radio dual connectivity (NR-DC).

Description

METHODS AND APPARATUS FOR HANDLING TEMPORARY CAPABILITY RESTRICTION AND REMOVAL IN A WIRELESS COMMUNICATION SYSTEM This application is based on and derives the benefit of Indian Provisional Applications 202341061581 filed on 13th September 2023 and 202341071870 filed on 20th October 2023, the contents of which are incorporated herein by reference. The present disclosure is related to wireless communication. More particularly, the present disclosure is related to a method and system for handling temporary capability restriction and removal of a user equipment (UE) in a 5G network. 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6GHz” bands such as 3.5GHz, but also in “Above 6GHz” bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies. At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service. Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning. Moreover, there has been ongoing standardization in air interface architecture/protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture/service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions. As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication. Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communic