The invention relates to methods for adjusting the transmit power utilized by a mobile terminal for uplink transmissions, and to methods for adjusting the transmit power used by a mobile terminal for one or more RACH procedures. The invention is also providing apparatus and system for performing these methods, and computer readable media the instructions of which cause the apparatus and system to perform the methods described herein. In order to allow for adjusting the transmit power of uplink transmissions on uplink component carriers, the invention suggests introducing a power scaling for uplink PRACH transmissions performing RACH procedures on an uplink component carrier. The power scaling is proposed on the basis of a prioritization among multiple uplink transmissions or on the basis of the uplink component carriers on which RACH procedures are performed.

Disclosed are techniques for wireless communication. In an aspect, a UE determines a configuration of a common PUCCH resource set that is based on a frequency hopping pattern and includes a first set of resource blocks (RBs) of a bandwidth part (BWP) in a first group of symbols and a second set of RBs of the BWP in a second group of symbols. In some designs, the second set of RBs is offset in frequency from the first set of RBs by a fixed hopping distance. In other designs, the BWP is further associated with a second PUCCH resource set that includes a third set of RBs of the BWP that overlaps in part with the first set of RBs of the BWP in the first group of symbols, a fourth set of RBs of the BWP that overlaps in part with the second set of RBs of the BWP in the second group of symbols, or a combination thereof.

Systems and techniques for transmitting and receiving uplink data between a terminal and a base station in a wireless communication system. In sonic implementations, a user equipment may transmit an uplink data signal of a predetermined symbol duration N times repeatedly before signal synchronization with a base station, where N is a natural number equal to or greater than 2.

The present specification relates to a method for performing uplink transmission in a wireless communication system. More particularly, a method performed by a terminal comprises the steps of: transmitting a PRACH preamble to a base station on the basis of a transmission unit indicating a physical layer resource set; receiving, from the base station, a random access response (RAR) including a TA value; and transmitting the uplink signal on the basis of the RAR, wherein transmission unit setting information about the transmission unit, set in the terminal, is transmitted through the PRACH preamble or the uplink signal to the base station.

Methods and apparatuses are related to multi-user parallel channel access (MU-PCA). For example, a wireless transmit/receive unit (WTRU) is provided that is one of the plurality of WTRUs operable to simultaneously communicate via a plurality of channels managed by an access point (AP). The WTRU includes a receiver configured to receive, from the AP, over at least one channel of the plurality of channels, a group poll (G-Poll) message that includes a resource allocation that indicates at least one allocated channel of the plurality of channels for the WTRU; and a transmitter configured to transmit an uplink request message, to the AP in response to the G-Poll message, over the at least one allocated channel of the plurality of channels, the uplink request message corresponding to uplink data the WTRU has for transmission to the AP.

A base station central unit transmits, to a wireless device via a base station distributed unit, configuration parameters of the wireless device. The base station central unit receives, from the wireless device via the base station distributed unit, a confirmation of at least one of the configuration parameters. The base station central unit transmits, to the base station distributed unit, an indication that the wireless device successfully performed a reconfiguration procedure based on the configuration parameters. The base station central unit communicates, with the wireless device via the base station distributed unit, based on the configuration parameters.

Methods, apparatuses and systems are provided for transmitting data. A method includes: sending a target random access preamble to a base station; receiving a target random access response that is sent by the base station based on the target random access preamble and carries repetition-number-indicating information; and transmitting, in accordance with a target transmission repetition number, the target uplink data to the base station during the random access procedure. The target transmission repetition number indicates a number of times the user equipment is configured to repeatedly transmit the target uplink data to the base station during the random access procedure. The target transmission repetition number is determined based on the repetition-number-indicating information and a target transmission block size. The target transmission block size is for the user equipment to transmit the target uplink data to the base station during the random access procedure.

An infrastructure equipment for forming part of a mobile radio network includes a transmit and receive unit, to transmit and receive data to and from mobile communications devices via a wireless access interface, and a controller processing requests for communications resources from the mobile communications devices. Plural associated communications devices are arranged to form a group, and each of the associated communications devices of the group includes a same common identifier, with respect to which communications sessions can be established to communicate data via the mobile radio network, and the controller is arranged in combination with the transmit and receive unit to respond to a request from one of the communications devices of the group to establish a communications bearer using the common identifier.

Systems and methods for two-step Random Access Channel, RACH, transmissions using a guard band (e.g., in unlicensed spectrum) are disclosed. In one embodiment, a method performed by a wireless communication device comprises obtaining one or more MsgA Physical Uplink Shared Channel (PUSCH) configurations for two-step random access, the one or more MsgA PUSCH configurations comprising a MsgA PUSCH configuration that comprises a PUSCH occasion (PO) for two-step random access that at least partially overlaps a guard band between two adjacent subbands. The method further comprises selecting the PO that at least partially overlaps the guard band between the two adjacent subbands for a MsgA transmission and determining that the MsgA transmission using the selected PO that at least partially overlaps the guard band is allowable. The method further comprises, upon determining that the MsgA transmission using the selected PO is allowable, transmitting the MsgA transmission.

A method performed by a wireless device for determining an identity of the wireless device, MsgB RNTI, in a wireless communications network during a random access procedure is provided. The wireless device transmits a random access preamble on a RACH at a random access occasion. It also transmits a message on a PUSCH that corresponds to the random access preamble. Further, the wireless device determines an MsgB RNTI as the sum of a first identity, RA-RNTI, and an offset that is an integer greater than 1, wherein the RA-RNTI is based on a sum comprising terms corresponding to at least the index of a first OFDM symbol, the index of a frequency resource, and the index of a first time slot that identifies the time/frequency resources of the random access occasion.