Abstract: A method and apparatus for path selection scheme for a master cell group (MCG) failure reporting is provided. A wireless device configured to operate in a wireless communication system determines a path for master cell group (MCG) failure information to inform a failure on a primary cell (PCell) of a MCG from among the at least one secondary ell (SCell) of the MCG and a secondary cell group (SCG), and transmits the MCG failure information via the determined path.

Abstract: A method and apparatus for performing relaxed measurement on a specific frequency in a wireless communication system is provided. A wireless device receives, from a serving cell, information including list of cells on a frequency and a threshold value. A wireless device performs relaxed measurement on the frequency based on that measurement result of at least one of the cells on the frequency is below than or equal to the threshold value.

Abstract: The present disclosure relates to a measurement handling in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system, the method comprises: receiving information for a validity timer from a network; starting the validity timer to be expired at a first expiration time point based on the information; while the validity timer is running, performing a measurement on one or more neighbor cells and performing cell reselections; determining a mobility state based on a number of the cell reselections; adjusting, based on the mobility state, the first expiration time point to a second expiration time point of the validity timer that is currently running; and stopping the measurement upon reaching the second expiration time point.

Abstract: A method and apparatus for reporting relaxed measurement in a wireless communication system is provided. A wireless device receives, from a network, a first measurement configuration including at least one of relaxed measurement conditions. A wireless device performs measurements on a serving cell based on the first measurement configuration. A wireless device evaluates the at least one of the relaxed measurement conditions based on results of the measurements on the serving cell. A wireless device performs a first relaxed measurement on the serving cell and/or at least one of neighbor cells based on the evaluation. A wireless device transmits, to the network, a message including an information informing that the first relaxed measurement has been performed on the serving cell and/or the at least one of the neighbor cells.

Abstract: A method and apparatus for conditional handover based on the service time of candidate cells in a wireless communication system is provided. A wireless device receives, from a network, handover configuration including information related to candidate cells to be measured and service time of each of the candidate cells. A wireless device performs measurement on the candidate cells. A wireless device selects a cell among the candidate cells based on the service time of each of the candidate cells. A wireless device performs handover to the selected cell.

Abstract: The present disclosure relates to method and apparatus for cell reselection in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises performing a cell reselection to a cell at a first time point during a time duration; receiving, from the cell, information comprising a first time range and a weight related to the first time range; determining a mobility counter based on the weight related to the first time range, wherein a time length between the first time point and a second time point at which a previous cell reselection is performed during the time duration is within the first time range; and determining a mobility state of the wireless device based on the mobility counter.

Abstract: A method and apparatus for a fast access considering service assistant information in a wireless communication system is provided. A wireless device selects a new cell. The wireless device performs a Random Access (RA) procedure to the new cell. The wireless device performs a cell reselection procedure based on a mobility information. The RA procedure includes (1) selecting a special RA preamble for service assistance information related to an intended slice, (2) transmitting, to the new cell, a RA message including the service assistance information; and (3) receiving, from the new cell, a response message including the mobility information.

Abstract: The present disclosure relates to method and apparatus for performing a measurement wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device comprises: receiving measurement configurations from a network, each of the measurement configurations mapping to a corresponding signal quality range; measuring a first signal quality for a serving cell at a first time point and a second signal quality for the serving cell at a second time point after the first time point; identifying a signal quality range to which a difference between the first signal quality and the second signal quality belongs; and performing a measurement based on a measurement configuration mapped to the identified signal quality range.

Abstract: A method and apparatus for de-prioritization of non-terrestrial networks (NTN) cells not providing current tracking area code (TAC) of a user equipment (UE) in a wireless communication system is provided. The UE, which is camping on a NTN cell, receives, from a network node serving the NTN cell, information on multiple TACs, and de-prioritizes the NTN cell based on that a TAC of an area where the wireless device is currently located is not included in the multiple TACs.

Abstract: The present disclosure relates to cell reselection in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: performing a cell reselection to a cell; receiving information for a signal quality range, information for a scaling factor for the signal quality range and information for a time period for determining a number of cell reselections; based on a determination that a signal quality measured for the cell is within the signal quality range, applying the scaling factor for the signal quality range to the time period; and estimating a mobility state of the wireless device based on the time period to which the scaling factor is applied.

Abstract: A method and apparatus for acquiring system information (SI) in a wireless communication system is provided. When a user equipment (UE) moves to a (neighbor) cell and if the UE have stored system information with same system information area code (SAC), the UE reuses the stored system information (SI) and skip acquiring whole system information blocks (SIBs). If the UE does not have matched SAC, the UE checks existence of any delta SI scheduling configuration which means that a group of SI message is to be update based on the stored information. If a SI message supporting delta configuration is broadcast at a cell and if the SI message includes a parameter which UE has previously stored, the UE replaces the stored parameter by the parameter received from the SI message.

Abstract: Provided are a method for adjusting cell reselection procedure. According to an embodiment of the present disclosure, the method includes: receiving information of a first cell from a second cell, determining that the first cell satisfies a cell reselection criteria, and upon initiation of a radio resource control (RRC) connection, performing cell reselection to the first cell by adjusting a cell reselection parameter, and a service is available in the first cell at specific times.

Abstract: Provided are a method of acquiring changed system information (SI) and a device supporting the method. According to one embodiment of the present invention, a method for acquiring changed SI in a wireless communication system includes: receiving a first SI message; receiving a notification of SI change; receiving an indication indicating a second SI message, which only contains system information blocks (SIBs) to be modified in the first SI message; and receiving the second SI message according to the indication.

Abstract: A method and apparatus for managing measurement results for early measurement in a wireless communication system is provided. A wireless device receives, from a network, measurement configuration for early measurement, wherein the measurement configuration includes 1) a first frequency group for a first Radio Access Technology (RAT), and 2) a second frequency group for a second RAT. A wireless device transmits a measurement report including the measurements results of only one of the first frequency group and the second frequency group. A wireless device discards the stored measurement results of the other one of the first frequency group and the second frequency group which are not transmitted to the network.

Abstract: A method and apparatus for reporting relaxed measurement in a wireless communication system is provided. A wireless device receives, from a network, a first measurement configuration including at least one of relaxed measurement conditions. A wireless device performs measurements on a serving cell based on the first measurement configuration. A wireless device evaluates the at least one of the relaxed measurement conditions based on results of the measurements on the serving cell. A wireless device performs a first relaxed measurement on the serving cell and/or at least one of neighbor cells based on the evaluation. A wireless device transmits, to the network, a message including an information informing that the first relaxed measurement has been performed on the serving cell and/or the at least one of the neighbor cells.

Abstract: A method and apparatus for path selection scheme for a master cell group (MCG) failure reporting is provided. A wireless device configured to operate in a wireless communication system determines a path for master cell group (MCG) failure information to inform a failure on a primary cell (PCell) of a MCG from among the at least one secondary ell (SCell) of the MCG and a secondary cell group (SCG), and transmits the MCG failure information via the determined path.

Abstract: A method and apparatus for informing relaxed measurement upon early measurement reporting in a wireless communication system is provided. A wireless device evaluates the at least one of the relaxed measurement conditions based on measurement results of the serving frequency. A wireless device performs relaxed measurement on the serving frequency and/or the at least one of neighbor frequencies based on the evaluation. A wireless device transmits, to the network, a message including 1) measurement results on each frequency of the frequency set, and 2) information on the relaxed measurement on the each frequency of the frequency set.

Abstract: Various embodiments provide a method for transceiving a signal by a terminal and a base station in a wireless communication system and a device supporting same.

Abstract: Provided are a method of determining mobility state of an UE and a device supporting the method. According to one embodiment of the present disclosure, the method includes: measuring a first reference signal received power (RSRP) of a serving cell at a first time point; measuring a second RSRP of the serving cell at a second time point within a first duration starting from the first time point; comparing the first RSRP and the second RSRP; and estimating for a mobility state of the UE based on a difference between the first RSRP and the second RSRP.

Abstract: Various embodiments provide a method for transceiving a signal by a terminal and a base station in a wireless communication system and a device supporting same.