Abstract:
A user equipment (UE) in a mobile communication system is described. The UE includes a long term evolution (LTE) transceiver for receiving configuration information from a network, and a processor for detecting an in-device coexistence (IDC) condition according to the configuration information and initiating a transmission of information on the detected IDC condition to the network. The information on the detected IDC condition comprises frequency information, and the transmission is initiated after the UE has failed to resolve the detected IDC condition on its own.
Abstract:
A method and apparatus for performing cell reselection in a wireless communication system is provided. A user equipment (UE) in an idle mode camps on a second cell, and receives reselection information for dual connectivity, which indicates cell reselection to a first cell or cell reselection to a frequency of the first cell, from the second cell. If the UE supports dual connectivity, the UE performs cell reselection based on the received reselection information for dual connectivity.
Abstract:
A method and apparatus for performing a random access (RA) procedure in a wireless communication system is provided. A user equipment (UE) establishes connection with a first node and a second node, and transmits an RA preamble to the second node. If a number of RA preamble transmissions reaches a maximum number, the UE stops uplink (UL) transmission of all cells in a group to which the second node belongs, and transmits an indication indicating that transmission of the RA preamble has failed to the first node.
Abstract:
Provided is a cell reselection method performed by a terminal in a wireless communication system. The method includes: receiving first priority information for at least one frequency; receiving second priority information for the one or more frequencies; and selectively applying, based on the state of the terminal, any one of the first priority information and second priority information and performing cell reselection. The first priority information is provided through a connection rejection message and provides instructions on the priority for the one or more frequencies to be lowered. The second priority information is provided from a current cell through system information.
Abstract:
A method and a user equipment (UE) are described for transmitting power headroom (PH) information in a wireless communication system. A primary cell and at least one secondary cell are configured with the UE. One logical channel identifier (LCID) field is configured in a medium access control (MAC) sub-header. The one LCID field indicates a presence of a PH MAC control element (CE). A MAC protocol data unit (PDU) comprising the MAC sub-header and the PH MAC CE is transmitted. The PH MAC CE includes PH information for both the primary cell and the at least one secondary cell.
Abstract translation:描述了用于在无线通信系统中发送功率余量(PH)信息的方法和用户设备(UE)。 用UE配置主小区和至少一个辅助小区。 一个逻辑信道标识符(LCID)字段被配置在介质访问控制(MAC)子报头中。 一个LCID字段表示存在PH MAC控制元件(CE)。 发送包括MAC子标题和PH MAC CE的MAC协议数据单元(PDU)。 PH MAC CE包括用于主要小区和至少一个二级小区的PH信息。
Abstract:
The present invention relates to a communication between MAC layer entity and PHY layer entity for parallel random access procedures of dual connectivity. In this scheme, a first PHY entity of a user equipment informs a failure of a random access preamble transmission to a first MAC entity of the UE. Then, the first MAC entity continues or stops a random access procedure without performing procedures for a random access failure.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting an RLC (Radio Link Control) re-transmission failure in the wireless communication system, the method comprising: communicating with both the first BS and the second BS, wherein the first BS has a Radio Resource Control (RRC) connection with the UE; and reporting to the first BS, a Radio Link Control (RLC) retransmission error without RRC connection re-establishment for the first BS if the RLC retransmission error occurs in an RLC entity transmitting RLC PDU (Protocol Data Unit) to the second BS.
Abstract:
The present invention relates to a communication between MAC layer entity and PHY layer entity for parallel random access procedures of dual connectivity. In this scheme, a first PHY entity of a user equipment informs a failure of a random access preamble transmission to a first MAC entity of the UE. Then, the first MAC entity continues or stops a random access procedure without performing procedures for a random access failure.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for transmitting a power headroom reporting in the wireless communication system, the method comprising: generating a PHR MAC CE (Power Headroom Reporting MAC Control Element) for activated cells comprising a first cell and a second cell; and transmitting a power headroom reporting through the generated PHR MAC CE to a network in a subframe, wherein the generated PHR MAC CE includes a value of Type 2 PH (Power Headroom) information for the first cell followed by a value of a Type 2 PH information for the second cell, and the Type 2 PH information for the second cell followed by a value of Type 1 PH information for the first cell.
Abstract:
A method and apparatus for applying security information in a wireless communication system is provided. A user equipment (UE) obtains first security information and second security information, applies the first security information to a first set of radio bearers (RBs) which is served by a master eNodeB (MeNB), and applies the second security information to a second set of RBs which is served by a secondary eNodeB (SeNB).