A wireless device receives configuration parameters, of a cell. The parameters indicates a first reference signal (RS) of a first transmission reception point (TRP) of the cell, a second RS of a second TRP of the cell, random access channel (RACH) resources of a RACH of the cell, and a power offset value for the first TRP. The wireless device adjusts a first received power value of the first RS by the power offset value. The wireless device transmits a preamble, via the RACH resources, to the first TRP in response to selecting the first RS for an RS. The wireless device transmits a preamble, via the RACH resources, to the second TRP in response to selecting the second RS for the RS.

A user equipment (UE) is described. The UE may comprise control unit configured to select a RA type between a 4-step RA procedure and a 2-step RA procedure based on whether the UL BWP is further configured with RA resources used for the feature, wherein in a case that the UL BWP is configured with both a second 2-step RA type RA resources and a second 4-step RA type RA resources that are used for the feature, to select the RA type further based on a RSRP of downlink pathloss reference in a case that the UL BWP is not configured with the second 2-step RA type RA resources and the second 4-step RA type RA resources, to select the RA type further based on the RSRP, in a case that the UL BWP is configured with the second 4-step RA type RA resources and not configured with the second 2-step RA type RA resources, to select the 4-step RA procedure, and in a case that the UL BWP is configured with the second 2-step RA type RA resources and not configured with the second 4-step RA type RA resources, to select the 2-step RA procedure.

A user equipment (UE) is described. The UE may comprise control unit configured to select a RA type between a 4-step RA procedure and a 2-step RA procedure based on whether the UL BWP is further configured with RA resources used for the feature, wherein in a case that the UL BWP is configured with both a second 2-step RA type RA resources and a second 4-step RA type RA resources that are used for the feature, to select the RA type further based on a RSRP of downlink pathloss reference in a case that the UL BWP is not configured with the second 2-step RA type RA resources and the second 4-step RA type RA resources, to select the RA type further based on the RSRP, in a case that the UL BWP is configured with the second 4-step RA type RA resources and not configured with the second 2-step RA type RA resources, to select the 4-step RA procedure, and in a case that the UL BWP is configured with the second 2-step RA type RA resources and not configured with the second 4-step RA type RA resources, to select the 2-step RA procedure.

Disclosed are a method and device for random access in a wireless communication system. A method by which a terminal performs random access in a wireless communication system according to one embodiment disclosed herein comprises the steps of: receiving, from a network, configuration information related to a first preamble group for a first-type feature; transmitting a first message to the network on the basis of a preamble selected from the first preamble group; and transmitting, to the network, a second message including a logical channel identifier (LCID) associated with a second-type feature, wherein the terminal may support both the first-type feature and the second-type feature.

Disclosed are a method and device for random access in a wireless communication system. A method by which a terminal performs random access in a wireless communication system according to one embodiment disclosed herein comprises the steps of: receiving, from a network, configuration information related to a first preamble group for a first-type feature; transmitting a first message to the network on the basis of a preamble selected from the first preamble group; and transmitting, to the network, a second message including a logical channel identifier (LCID) associated with a second-type feature, wherein the terminal may support both the first-type feature and the second-type feature.

Methods and apparatuses for multiple concurrent random access procedures. A method for operating a user equipment includes receiving first configuration for a random access (RA) procedure, initiating a first RA procedure on a cell based on the first configuration, and initiating a second RA procedure on the cell prior to completion of the first RA procedure. A method for a base station includes transmitting a first random access response (RAR) and a second RAR. The first RAR includes a first temporary cell radio network temporary identifier (TC-RNTI) and a first uplink grant. The second RAR includes a second TC-RNTI and a second uplink grant. The method further includes receiving a first PUSCH scheduled by the first uplink grant and a second PUSCH scheduled by the second uplink grant. The first PUSCH includes the first TC-RNTI. The second PUSCH includes only the first TC-RNTI or both the first and second TC-RNTIs.

A terminal apparatus, which executes a two-step random access procedure or a four-step random access procedure to establish a connection with a base station apparatus, executes control such that, in a case where a first message of the two-step random access procedure including a preamble and predetermined information for connection establishment is transmitted and a number of unsuccessful attempts to receive the first message by the base station apparatus exceeds a predetermined number, the terminal apparatus transmits a second message to be transmitted from the terminal apparatus to the base station apparatus in the four-step random access procedure.

A terminal apparatus, which executes a two-step random access procedure or a four-step random access procedure to establish a connection with a base station apparatus, executes control such that, in a case where a first message of the two-step random access procedure including a preamble and predetermined information for connection establishment is transmitted and a number of unsuccessful attempts to receive the first message by the base station apparatus exceeds a predetermined number, the terminal apparatus transmits a second message to be transmitted from the terminal apparatus to the base station apparatus in the four-step random access procedure.

Aspects of the present disclosure relate to wireless communications, and more particularly, to procedures for supporting conditional new radio (NR) secondary node (SN) addition and change by reusing conditional handover (CHO) procedures. In some aspects, the procedures include a method for wireless communications by a master node (MN), comprising identifying a set of candidate cells for a conditional addition or change as an SN for a UE based on execution criteria, and signaling configuration information regarding the set of candidate cells to the UE.

Aspects of the present disclosure relate to wireless communications, and more particularly, to procedures for supporting conditional new radio (NR) secondary node (SN) addition and change by reusing conditional handover (CHO) procedures. In some aspects, the procedures include a method for wireless communications by a master node (MN), comprising identifying a set of candidate cells for a conditional addition or change as an SN for a UE based on execution criteria, and signaling configuration information regarding the set of candidate cells to the UE.