A communication apparatus having at least one of a plurality of features defined in a mobile communication system, the communication apparatus comprising: a receiver configured to receive, from a base station, a system information block including information indicating a plurality of resources of random access and information indicating correspondence between each of the plurality of resources of the random access and a combination of one or more features; and a controller configured to select, from the plurality of resources of the random access, a resource of the random access corresponding to the at least one of the plurality of features which the communication apparatus has, on a basis of the information indicating the correspondence, and to calculate a random access-radio network temporary identifier (RA-RNTI) used in a random access procedure on a basis of the selected resource of the random access. The one or more features includes at least one of a reduced capability (RedCap) feature, a small data feature, a network slicing feature, and a feature for repetition of a message3 (MSG3).

The present disclosure provides an access method, an access device, a UE and a network device. The access method includes transmitting a first pilot and a first message in a random access procedure. A UE type of the UE is indicated in the first pilot and/or the first message in accordance with a predefined mode and/or indication information.

The present disclosure provides an access method, an access device, a UE and a network device. The access method includes transmitting a first pilot and a first message in a random access procedure. A UE type of the UE is indicated in the first pilot and/or the first message in accordance with a predefined mode and/or indication information.

This disclosure provides an information transmission method and a terminal. The information transmission method according to the embodiments of this disclosure includes: in a case that transmission of random access request information conflicts with transmission of target information, transmitting the random access request information or the target information based on transmission priority.

The present disclosure is related to a 5.sup.th generation (5G) or pre-5G communication system for supporting a higher data rate than a 4.sup.th generation (4G) communication system such as long term evolution (LTE). According to various embodiments of the present disclosure, a method for operating a base station in a wireless communication system is provided. The method comprises: generating remaining minimum system information (RMSI) comprising random access channel (RACH) configuration, wherein the RACH configuration comprises an association between RACH resources and one of a synchronization signal (SS) block and channel state information reference signal (CSI-RS) resources; and transmitting, to a user equipment (UE), the RMSI.

A method for processing beam failure and a terminal are provided by the present disclosure. The method includes: determining a BFR event, wherein the beam failure recovery event includes an abnormality occurring in a BFR procedure or at least two cells both undergoing a BFR; executing a specific operation according to the BFR event.

Apparatus and methods are provided for on-demand SI request procedure. In one novel aspect, the RACH procedure is used for one-demand SI information updates through unicast. In one embodiment, the UE sends an embedded SI request message in Msg3 requesting one or more on-demand SI including a UE ID. The SI response and the information of the requested SI are included in the Msg4 or in a separate unicasted message. In another embodiment, one or more assistant information is included in Msg3 or are associated with the preamble in Msg1. In another novel aspect, the preamble of the Msg1 is associated with a group X of SIB. Upon detecting the failure of transmission of the SI request, the UE monitors and receives updated SI information of the whole group X through a broadcast channel.

A UE comprises: a memory comprising instructions; and one or more processors in communication with the memory, wherein the one or more processors execute the instructions to: wirelessly communicate with a source node, perform a handover from the source node to a target node using L2 signaling in response to a handover decision between the source node and the target node, and wirelessly communicate with the target node in response to the handover. A method implemented by a UE comprises: wirelessly communicating with a source node; performing a handover from the source node to a target node using L2 signaling and in response to a handover decision; and wirelessly communicating with the target node in response to the handover.

A communication method and system for converging a 5.sup.th generation (5G) communication system for supporting higher data rates beyond a 4.sup.th generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system includes 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 method includes receiving and selectively applying at least one of a first set of random access prioritization parameters, a second set of random access prioritization parameters, or a third set of random access prioritization parameters, based on whether a random access procedure is initiated for beam failure recovery or handover.

The present disclosure is related to a UE, a network node, and methods for feature based random access. A method at a UE for performing a random access (RA) procedure with a network node comprises: transmitting, to the network node, a first message comprising a physical random access channel (PRACH) preamble to initiate the RA procedure: receiving, from the network node, a second message in response to the first message: determining whether a feature is to be performed or not at least partially based on at least one of the second message, a configuration at the UE, and a capability of the UE; and transmitting, to the network node, a third message with or without the feature performed depending on a result of the determination.