An embodiment of the present invention relates to a method for receiving and transmitting, by a mobility management entity (MME), tracking area update (TAU)-less power saving mode (PSM) related signals, the method comprising the steps of: receiving, from a terminal, a first TAU request message including information related to a TAU-less PSM entity; transmitting a TAU accept message in response to the first TAU request message; and receiving a second TAU request message including information related to release of the TAU-less PSM, wherein the second TAU request message including information related to release of the TAU-less PSM is regarded by the MME as an attach request.

Systems and methods are provided for optimizing N10 interface messaging. Specifically, registration messages, de-registration messages, and the like can be dynamically controlled such that communication is prevented. Said messages are communicated via an N10 interface between a Unified Data Management function (UDM) and a Session Management function (SMF) in a 5G network. Additionally, subscription information, user profile information, etc., is also communicated via the N10 interface. Thus, the N10 interface can easily become overloaded or congested. Aspects herein provide mechanisms to avoid additional congestion of the N10 interface by intelligently eliminating specific messages communicated to the UDM via the N10 interface.

A method is performed in a first infrastructure equipment for a handover of a wireless device from the first infrastructure equipment as a source to a second infrastructure equipment as a target. The method comprises maintaining a mapping between a plurality of packet bearers and a data radio bearer for the wireless device, each of the plurality of packet bearers being configured to provide a specified quality of service, determining that the wireless device should handover from the first infrastructure equipment to the second infrastructure equipment, determining that the second infrastructure equipment does not support the mapping of the plurality of packet bearers to the data radio bearer, and providing an indication of a mapping of the plurality of packet bearers for the second infrastructure equipment after handover to one of a core network equipment and the second infrastructure equipment.

Disclosed are a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system thereof. The present disclosure can be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety-related services, and the like), based on a 5G communication technology and an IoT-related technology. One embodiment of the present invention relates to a method by which a terminal updates system information, and a terminal for performing the method, which comprises the steps of: acquiring first system information and second system information from a first cell; starting a timer corresponding to the second system information; determining whether the second cell is a cell that shares the second system information with the first cell, if the terminal has moved from the first cell to the second cell; and updating the second system information on the basis of the determination result.

The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as long term evolution (LTE). The present disclosure relates to a method for processing a control signal in a wireless communication system, and may comprise the steps of: receiving a first control signal being transmitted from a base station; processing the received first control signal; and transmitting, to the base station, a second control signal generated on the basis of the processing.

A method of processing state information relating to user equipment in a communications system comprising a radio access network, the method comprising: maintaining current state information relating to the user equipment; and on the basis of a change of connection of the user equipment from a first cell to a second cell: transmitting a current value associated with a given state information part to the target radio access node in response to detecting at least one of one or more predetermined triggers that indicate that the target radio access node may not have received the current value from the source radio access node; or relying on the target radio access node having received the current value from the source radio access node if said at least one of said one or more predetermined triggers is not detected.

A random access method includes: initiating, by user equipment (UE), a random access based on at least one of: initial access, uplink synchronization loss, or reconstruction; selecting, by the UE, a beam to transmit a preamble; determining, by the UE, whether a currently selected beam for transmitting the preamble is identical to multiple recorded beams previously selected for transmitting the preamble; determining, by the UE, that the currently selected beam is identical to one of the multiple recorded beams; determining, by the UE, a value of a pilot power boost counter not to reach a maximum value; and transmitting, by the UE, the preamble at a boosted pilot transmit power.

Methods and apparatuses for conditional handover (CHO) are provided herein. CHO configuration information identifying CHO candidate cells may be received. The CHO configuration information may indicate CHO trigger conditions associated with the CHO candidate cells, measurement trigger conditions associated with non-CHO candidate cells, and measurement reporting eligibility criteria associated with a serving cell. If a CHO trigger condition is fulfilled, and if a measurement trigger condition is fulfilled, and if the serving cell does not meet the measurement reporting eligibility criteria, a handover procedure may be executed towards the CHO candidate cell for which the CHO trigger condition is fulfilled. The method may include sending a message indicating completion of the handover procedure and reporting a signal measurement associated with a non-candidate cell. If the serving cell meets the measurement reporting eligibility criteria, the method may include refraining from executing the CHO while still reporting the signal measurement.

Vehicle systems configured to interact with remotely located smart systems are disclosed. An example vehicle includes memory, machine-readable instructions, and one or more processors. The one or more processors are configured to execute the machine-readable instructions to send, from the vehicle to a smart system located remotely relative to the vehicle, a first message configured to cause the smart system to adjust one or more functions of a device controllable via the smart system. The one or more processors are further configured to execute the machine-readable instructions to receive, at the vehicle from the smart system, a second message including information associated with the smart system or the device.

A method and apparatus to support cell level mobility is provided. Method for supporting cell level mobility includes receiving a Radio Resource Control (RRC) reconfiguration message, performing a set of operations and performing data transfer in the second cell after performing a specific operation of the set of operations. In case that the RRC reconfiguration message comprises a specific set of parameters, the set of operations comprises starting a timer related to cell level mobility, resetting Medium Access Control (MAC) entity, adjusting uplink transmission timing based on a parameter related to target timing advance, receiving a layer 1 grant based on a first identifier, performing uplink transmission of a specific MAC Protocol Data Unit (PDU) based on the layer 1 grant, receiving downlink assignment and stopping the timer related to cell level mobility.