Abstract: There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional ease of establishing a default hearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.

Abstract: An operation method of a terminal in a communication system may comprise: in response to occurrence of uplink (UL) data, transmitting a scheduling request (SR) for the UL data to a base station; performing a UL timing alignment procedure with the base station when a UL timing between the terminal and the base station is not synchronized; receiving a UL grant for the UL data from the base station; and transmitting the UL data to the base station using resources indicated by the UL grant.

Abstract: A method of picking up a die may include classifying a pickup region of a diced wafer, in which targeted pickup dies are placed, into first to n-th regions and performing a pickup step on dies in the first to n-th regions. The first region may include first dies, which are outermost dies of the targeted pickup dies. An (x+1)-th region may include regions, occupied by dies adjacent to at least one of x-th dies in an x-th region and proximate to a center of the pickup region in relation to the x-th region, n may be a natural number, and x may be an arbitrary natural number that is smaller than the n. The n-th region may have a rectangular shape, and a quantity of n-th dies in the n-th region in contact with a short side of the n-th region may be one or two.

Abstract: There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional ease of establishing a default hearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.

Abstract: A method of operating a terminal in a communication system may include: receiving a message including first configuration information for a low-latency random access procedure from a base station; transmitting MsgA to the base station on the basis of the first configuration information; retransmitting the MsgA when MsgB, which is a response to the MsgA, is not received; and completing the random access procedure on the basis of information included in the MsgB when the MsgB is received in a section corresponding to the maximum number of low-latency transmissions indicated by first information included in the first configuration information.

Abstract: An operation method of a terminal in a communication system may comprise: receiving, from a base station, an RRC message including CG configuration information and parameters for a reconfiguration request on a CG resource configured by the CG configuration information; performing a monitoring operation for uplink communication according to the CG configuration information in a period indicated by a first parameter among the parameters; transmitting, to the base station, a MAC CE requesting reconfiguration of the CG resource, when a result of the monitoring operation satisfies a second parameter among the parameters; and receiving, from the base station, configuration information of the CG resource reconfigured according to the MAC CE.

Abstract: A method and an apparatus for uplink communication based on grant-free scheme in a communication system. An operation method of a terminal includes receiving an RRC message from a base station, the RRC message including information indicating a frequency resource of a PUSCH; receiving a DCI from the base station, the DCI including information indicating a time resource of the PUSCH; and transmitting the PUSCH to the base station using the time-frequency resource indicated by the RRC message and the DCI. Therefore, the performance of the communication system can be improved.

Abstract: There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional case of establishing a default bearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.

Abstract: An operation method of a terminal in a communication system includes receiving an RRC message from a base station, the RRC message including configuration information of a plurality of CGs; transmitting a first signal to the base station through a first CG resource indicated by a first CG among the plurality of CGs; receiving a control message from the base station; and based on a result of receiving the control message, transmitting a second signal to the base station through a second CG resource indicated by an activated second CG among the plurality of CGs, wherein a pattern of the first CG resource is different from a pattern of the second CG resource.

Abstract: An operation method of a terminal in a communication system may comprise: receiving configuration information of an SPS from a base station, the configuration information including a first HARQ offset for first data and a second HARQ offset for second data; receiving control information including information indicating activation of the SPS from the base station; receiving the first data and the second data from the base station based on the configuration information of the SPS; generating a first HARQ codebook including a first HARQ feedback for the first data and a second HARQ feedback for the second data; and transmitting the first HARQ codebook to the base station on a first PUCCH indicated by the first HARQ offset and the second HARQ offset, wherein a value of the first HARQ offset is different from a value of the second HARQ offset.

Abstract: An operation method of a terminal in a communication system includes receiving an RRC message from a base station, the RRC message including configuration information of a plurality of CGs; transmitting a first signal to the base station through a first CG resource indicated by a first CG among the plurality of CGs; receiving a control message from the base station; and based on a result of receiving the control message, transmitting a second signal to the base station through a second CG resource indicated by an activated second CG among the plurality of CGs, wherein a pattern of the first CG resource is different from a pattern of the second CG resource.

Abstract: A method and an apparatus for uplink communication based on grant-free scheme in a communication system. An operation method of a terminal includes receiving an RRC message from a base station, the RRC message including information indicating a frequency resource of a PUSCH; receiving a DCI from the base station, the DCI including information indicating a time resource of the PUSCH; and transmitting the PUSCH to the base station using the time-frequency resource indicated by the RRC message and the DCI. Therefore, the performance of the communication system can be improved.

Abstract: There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional case of establishing a default bearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.

Abstract: There are provided a device-to-device communication method, a mobile device using the same, and a device-to-device communication control method. The device-to-device communication method according to the invention may include receiving device-to-device communication resource allocation information and transmission characteristics information for device-to-device communication from a base station, and performing direct communication with an opposite terminal using the transmission characteristics information for device-to-device communication and the device-to-device communication resource allocation information, in which the transmission characteristics information includes the number of redundancy versions to be transmitted within at least one consecutive transmission time interval (TTI).

Abstract: A transmission method of a mobile station moved in a region of a cell provided by a base station and providing a wireless LAN (local area network). The mobile station receives a plurality of uplink packet flows from a terminal. The mobile station distributes the plurality of uplink packet flows to a plurality of carrier components. Further, the mobile station transmits the plurality of uplink packet flows to the base station through the plurality of carrier components.

Abstract: There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional ease of establishing a default hearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.

Abstract: There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional case of establishing a default bearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.

Abstract: Provided is a link adaptation transmission and reception method in device-to-device (D2D) communication based on cellular mobile communication. An operation method of a terminal in the link adaptation method according to the present invention includes receiving information related to a first transmission through a D2D link, performing transmission for an opposite terminal using the information related to the first transmission, and determining information related to a second transmission after the transmission based on reception from the opposite terminal. Using the link adaptation method according to the present invention, an adaptive modulation and coding scheme may be provided at the time of data transmission on a D2D link while minimizing control of a base station, thereby reducing the complexity of a cellular network due to the D2D communication.

Abstract: A method of providing service continuity between cellular communication and device-to-device communication is disclosed. A procedure for switching between cellular communication and device-to-device communication according to an example embodiment of the present invention may include transferring, by a gateway, a D2D bearer creation request message to an MME, transferring, by the MME, the D2D bearer creation request message to a base station, mapping, by the base station, D2D bearer QoS to D2D radio bearer QoS and transmitting an RRC connection reconfiguration message to terminals, receiving, by the base station, an RRC connection reconfiguration completion message indicating creation of a D2D radio bearer from the terminals, transmitting, by the base station, a D2D bearer creation response message indicating creation of a D2D bearer to the MME, and transferring, by the MME, the D2D bearer creation response message to the gateway.

Abstract: There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional case of establishing a default bearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.