Abstract:
A method and apparatus for performing multimedia broadcast multicast service (MBMS) minimization of drive test (MDT) in a wireless communication system is provided. A user equipment (UE) receives a MBMS-MDT timer configuration from a network. A MBMS-MDT timer is newly defined for the MBMS-MDT. The UE starts the MBMS-MDT timer based on the received MBMS-MDT timer configuration when a specific condition, which relates to degradation of quality of MBMS, is met, and while the MBMS-MDT timer is running, the UE performs the MBMS-MDT.
Abstract:
A method and apparatus for reconfiguring multimedia broadcast multicast service (MBMS) minimization of drive test (MDT) in a wireless communication system is provided. A user equipment (UE) receives a value tag for MBMS-MDT, and determines whether to perform MBMS-MDT reconfiguration by comparing the received value tag for MBMS-MDT with a stored value tag for MBMS-MDT. If the received value tag for MBMS-MDT and the stored value tag for MBMS-MDT are different from each other, the UE performs the MBMS-MDT reconfiguration. Alternatively, if a paging message includes an indicator of modification of the MBMS-MDT configuration, the UE acquires the MBMS-MDT configuration and performs the MBMS-MDT reconfiguration.
Abstract:
A method and apparatus for performing traffic steering from 3rd generation partnership project (3GPP) to wireless local area network (WLAN) in a wireless communication system is provided. A user equipment (UE) receives parameters for evaluating traffic steering from 3GPP to a specific WLAN, and attempts to acquire attributes which correspond to the parameters and are configured for evaluating traffic steering from 3GPP to the specific WLAN. If at least one of the attributes is not acquired for the specific WLAN, the UE evaluates traffic steering from 3GPP to other WLAN excluding the specific WLAN.
Abstract:
A method and apparatus for obtaining wireless local area network (WLAN) information in a wireless communication system is provided. An evolved NodeB (eNB) transmits an indication of WLAN offloading support to a mobility management entity (MME), and receiving a list of supported WLAN from the MME. The eNB may decide which access point name (APN), among a list of common APNs, to offload, and broadcast WLAN information and the decided APN to user equipments (UEs). Alternatively, the eNB may decide which APN to offload for a specific UE, and transmit WLAN information and the decided APN to the specific UE via a dedicated signaling.
Abstract:
A method and apparatus for performing a random access procedure in a wireless communication system is provided. In one embodiment, a user equipment (UE) determines a required amount of repetitions for uplink transmissions during a random access procedure, and performs repetitions for uplink transmissions based on the determined required amount of repetitions for uplink transmissions. The uplink transmissions may include transmission of preambles which are grouped. In another embodiment, a UE configures a communication windows for lost-cost machine-type communication (MTC) UE, and performs a random access procedure through the configured communication window.
Abstract:
The present invention relates to a method of performing a handover of a mobile device by a first base station. The present invention includes transmitting a handover request message to a second base station, receiving a handover response message in response to the handover request message from the second base station, wherein the handover response message includes subframe configuration information related to the second base station, and performing the handover of the mobile device based on the received handover response message.
Abstract:
A method performed by a user equipment (UE) in a wireless communication system, the method including: selecting to create a configured sidelink grant corresponding to transmissions of at least one media access control (MAC) protocol data unit (PDU); and triggering a transmission carrier selection procedure based on (i) data being available in a sidelink traffic channel (STCH) associated with one or more carriers, and (ii) there being no configured sidelink grant on any carrier, among the one or more carriers, that is allowed for the STCH.
Abstract:
A method and apparauts for determining a priority of a packet based on a reliability level and/or congestion level in a wireless communication system is provided. A user equipment (UE) receives information on a reliability level and/or a congestion level from a network, generates a first packet and a second packet, determines a priority of the first packet and/or a priority of the second packet when a condition related to the reliability level and/or the congestion level of the first packet and/or the second packet is met, and transmits at least one of the first packet and/or the second packet.
Abstract:
Provided is a method for generating a packet by a user equipment (UE). The method may include: receiving a threshold for packet duplication, from a base station; when a number of duplicated packets for a certain time does not satisfy the threshold for the packet duplication, generating a second packet by duplicating a first packet; and transmitting the generated second packet.
Abstract:
According to the present invention, a user equipment (UE) selects a carrier among a plurality of carriers, receives information on a channel busy ratio (CBR) threshold from a network, and triggers a carrier reselection. When a CBR of the carrier satisfies the CBR threshold, e.g. the CBR of the carrier is below than the CBR threshold, the UE keeps using the carrier. That is, the carrier reselection is not performed when the CBR of the carrier satisfies the CBR threshold. On the other hand, when a CBR of the carrier does not satisfy the CBR threshold, the UE performs the carrier reselection.