A method and an apparatus for transmitting or receiving a reference signal in a wireless communication system are disclosed. A method of receiving a tracking reference signal (TRS) by a terminal in a wireless communication system according to an embodiment of the present disclosure may comprise: receiving, from a network, at least one of first offset information related to at least one burst of the TRS, or second offset information related to the at least one burst; and receiving, from the network, the TRS in the at least one burst, wherein the first offset information is related to a first burst of the at least one burst, wherein, based on the second offset information being absent, a number of the at least one burst is one, and wherein, based on the second offset information being present, the second offset information indicates an offset between the first burst and a second burst.

The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than that of a beyond-4th generation (4G) communication system such as long-term evolution (LTE). The disclosure provides a method performed by a terminal, the method including: transmitting, to a base station, capability information including information indicating whether the terminal supports UL RRC segmentation; and transmitting, to the base station, a message regarding a QoE report, wherein, when the terminal supports the UL RRC segmentation, the message regarding the QoE report is segmented based on a size of a PDCP SDU.

The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than that of a beyond-4th generation (4G) communication system such as long-term evolution (LTE). The disclosure provides a method performed by a terminal, the method including: transmitting, to a base station, capability information including information indicating whether the terminal supports UL RRC segmentation; and transmitting, to the base station, a message regarding a QoE report, wherein, when the terminal supports the UL RRC segmentation, the message regarding the QoE report is segmented based on a size of a PDCP SDU.

Positioning of a UE is supported in a Radio Resource Control (RRC) Inactive state. The UE receives from a location server a request for periodic or triggered location and an indication of whether uplink, downlink, or uplink and downlink positioning will be used for subsequent location reporting events when the UE is in the RRC Inactive state. When an event is detected, the UE sends a first event report and a second event report to the location server to report the event and enable UE location while the UE is in the RRC Inactive state. The event reports are each sent with Small Data Transmission (SDT). The first event report may include a Request Assistance Data message indicating a request for an uplink (UL) Positioning Reference Signal (PRS) configuration and the second event report may include location measurement performed by the UE.

Positioning of a UE is supported in a Radio Resource Control (RRC) Inactive state. The UE receives from a location server a request for periodic or triggered location and an indication of whether uplink, downlink, or uplink and downlink positioning will be used for subsequent location reporting events when the UE is in the RRC Inactive state. When an event is detected, the UE sends a first event report and a second event report to the location server to report the event and enable UE location while the UE is in the RRC Inactive state. The event reports are each sent with Small Data Transmission (SDT). The first event report may include a Request Assistance Data message indicating a request for an uplink (UL) Positioning Reference Signal (PRS) configuration and the second event report may include location measurement performed by the UE.

A method of conducting bearer reconfiguration in a cellular communications network, the method comprising the steps of at a network component, initiating reconfiguration of a bearer between a base station and a mobile device; transmitting a signal from the network component to the mobile device; wherein the signal includes information defining the reconfiguration and also defining additional instructions in conjunction with that reconfiguration.

Aspects of the disclosure provide a system and method used for allowing a path selection or reselection (hereby (re)selection). In some embodiments data packets for a session between a UE and an application system (AS) can utilize a pre-established user plane path between the AS and an access node (AN) which serves the UE. This can allow for faster session set-up times as a new user plane (UP) path need not be established for every new session if existing UP paths can be utilized. Some embodiments allow an application aware (re)selection of the user plane.

Aspects of the disclosure provide a system and method used for allowing a path selection or reselection (hereby (re)selection). In some embodiments data packets for a session between a UE and an application system (AS) can utilize a pre-established user plane path between the AS and an access node (AN) which serves the UE. This can allow for faster session set-up times as a new user plane (UP) path need not be established for every new session if existing UP paths can be utilized. Some embodiments allow an application aware (re)selection of the user plane.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure provides a method and device for switching a serving cell.

A terminal in a wireless communication system is provided. The terminal includes a transceiver, and at least one processor configured to receive, from BS, a RRC reconfiguration message including a reconfiguration with synchronization, transmit, to the BS, a first message including a PRACH, a PUSCH, and a C-RNTI MAC CE based on the reconfiguration with synchronization, control the transceiver to receive, from the BS, a first PDCCH and a PDSCH, wherein: for the case when the BS receives the PRACH and does not receive the PUSCH, the first PDCCH is a PDCCH addressed to RA-RNTI and the PDSCH includes a fallback RAR; and for the case when the BS receives the PUSCH, the first PDCCH is a PDCCH addressed to a C-RNTI corresponding to the C-RNTI MAC CE and the PDSCH includes an absolute timing advance command MAC CE, determine that a RAR reception is successful based on the at least one of the fallback RAR or the PDSCH, when a DRX is configured for the terminal via a RRC signalling, determine that active time for the DRX includes a time while a second PDCCH indicating new transmission addressed to a C-RNTI corresponding to the C-RNTI MAC CE has not been received after determining that the RAR reception is successful, and monitor the second PDCCH during the active time.