Abstract: Embodiments provide a method for initializing a secondary cell in a cellular communication system. The method may comprise: receiving from a base station a Radio Resource Control RRC configuration request for the secondary cell to perform a RRC configuration; and in response to receiving the RRC configuration request, performing uplink synchronization with the base station in the secondary cell.

Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). A method for communication by a base station is provided. The method includes transmitting a scheduling assignment including a first part of a destination identifier (ID), and transmitting a medium access control (MAC) protocol data unit (PDU) including a MAC header including a user equipment (UE) ID and a second part of the destination ID.

Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for multi-carrier OFDM duplex transmission, and relate to the communications field, so as to solve the problem where spectrum duplex transmission cannot be normally performed due to interference that is generated by an echo signal transmitted by using an OFDM technology. The method for multi-carrier OFDM duplex transmission includes: performing, on at least one OFDM subcarrier channel, sending and receiving of a near-end OFDM signal; obtaining a carrier phase difference between a near-end echo OFDM signal and a far-end OFDM signal; and performing a phase adjustment for the near-end OFDM signal according to the carrier phase difference.

Abstract: VoIP traffic is intercepted for analysis. Packets transmitted from a mobile communication device over a radio access network to a core mobile communications network are intercepted. VoIP packets are detected within the intercepted packets. The detected VoIP packets are stored for analysis, and the intercepted packets are forwarded to a gateway in communication with a packet data network.

Abstract: This invention generally relates to Low-power and Lossy Wireless Networks. The proposed solution takes advantage of the fact that retry mechanism and back-off mechanism are already present in trickle-based algorithms. This way, it is possible to disable the equivalent features present at the MAC level which are the main causes of the large maxima of the fluctuating end-to-end delay. Also, it has been done away with the additional waiting time which comes from the packet waiting in the buffer in the MAC. Therefore, it has been provided a real-time layer with a limited size buffer able to allocate a deadline to a multicast packet and to select packets for transmission or rejection on the basis of the packet deadline. This way, it is kept a tighter hold on the rejection and waiting of the packets.

Abstract: A method of an access point device is disclosed. A first indication message is sent to a terminal. The first indication message is used to indicate that the terminal is allowed to access a current channel or to indicate that the terminal has downlink data on the access point device or to indicate that the terminal is allowed to send uplink data. A second indication message is sent by the terminal according to the first indication message. The second indication message is used to indicate that the terminal is to send uplink data. After receiving the second indication message, a third indication message is sent to the terminal. The third indication message carries channel use time information. The channel use time information is used to indicate time for using the channel to send the uplink data by the terminal.

Abstract: In one example, a network device comprising a first chassis of a multi-chassis link aggregation group (MC-LAG) having three or more chassis, comprises one or more network interfaces configured to receive a packet to be forwarded using the MC-LAG, and a control unit configured to determine whether the packet was received from a device outside of the MC-LAG, when the packet was received from the device outside of the MC-LAG, add data to the packet that identifies the first chassis as a source of the packet for the MC-LAG, and forward the packet via at least one of the network interfaces. In this manner, chassis of the MC-LAG can prevent forwarding of the packet to the source of the packet for the MC-LAG, based on the data that identifies a source of the packet for the MC-LAG.

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 first group of Type 2 PH (Power Headroom) information including a plurality of values of Type 2 PH information followed by a second group of Type 1 PH information including a plurality of values of Type 1 PH information.

Abstract: A technique for measuring Reference Signal Received Power (RSRP) is provided. The RSRP is measured based on Cell-specific Reference Signals (CRSs) provided by cells (102, 104) of a mobile telecommunications network (100). The CRSs of at least two of the cells overlap in time and frequency. As to a method aspect of the technique, a time offset for sub-frames received from the at least two cells is determined. The overlapping CRSs are received for a group of sub-carriers. A coarse channel state is estimated for each of the at least two cells by multiplying the received overlapping CRSs with a function of phase-shifted CRSs. The phase-shifted CRSs of different sub-carriers in the group include a phase-shift that corresponds to the determined time offset. The RSRP is measured for each of the at least two cells based on the estimated coarse channel state.

Abstract: A communication method includes: sending, by an MME, a bearer setup request message to an eNodeB, where the bearer setup request message is used to instruct the eNodeB to set up a voice bearer for user equipment; and when the MME receives a bearer setup failure message sent by the eNodeB in response to the bearer setup request message, sending, by the MME, an indication message to the user equipment, where the indication message is used to indicate that a voice over VoIMS of the user equipment is unavailable. When setup of a voice bearer of a VoLTE call fails, the user equipment is notified that a VoLTE is unavailable, so that the user equipment can be prevented from continuing attempting to initiate the VoLTE call and exacerbating cell congestion.

Abstract: Provided herein is a method of receiving a downlink signal in a wireless communication system, the method being implemented by a cellular-IoT (Internet of things) (CIoT) mobile terminal and including searching for control information directed to the mobile terminal in a plurality of candidate downlink control channel resource regions corresponding to a coverage class of the mobile terminal on a part of a downlink resource, and receiving a downlink data channel indicated by control information received in at least one of the plurality of candidate downlink control channel resource regions, wherein the plurality of candidate downlink control channel resource regions is configured to have a period set for each of coverage classes, wherein each of the plurality of candidate downlink control channel resource regions is configured to have a duration configured for each of the coverage classes.

Abstract: The present invention discloses a superposition coding method, apparatus, and system, The method of the present invention includes: generating a superposition coding signal according to bit data to be separately sent to the at least two user equipments (UEs); sending notification signaling to at least one UE in the at least two UEs, where the notification signaling carries data selection information, and the data selection information is used for instructing the UE to acquire, from bit data demodulated from the superposition coding signal, at least one bit of data that is of a specific quantity and at a specific location as received data; and sending the superposition coding signal to the at least two UEs. The present invention is mainly applied in a demodulation process of a superposition coding signal.

Abstract: An apparatus comprises at least one processor and at least one memory including computer code. The at least one memory and the computer code are configured to with the at least one processor cause the apparatus to at least perform receiving a first message from a first port, the first message for transmission in a communications network. The first message comprises at least one destination address. The apparatus is also configured to perform determining whether the first message is deliverable and generating a second message comprising the at least one destination address for each undeliverable address; and transmitting the second message.

Abstract: A method and a device for transmitting and receiving data in a wireless communication system are disclosed. In an embodiment the method includes receiving transmission data, dividing the received transmission data into K>1 data streams, where K is a positive integer, feeding each data stream into its associated parallel processing path so as to obtain K modulated data packets j=1, . . . , K from the parallel processing paths, wherein in each processing path the method further includes segmenting the data stream, encoding the segmented data stream with a first error detection code and modulating the error detection encoded segmented data stream so as to obtain a modulated data packet j comprising a plurality of modulated symbols. The method further includes multiplexing the K modulated data packets so that at least one modulated symbol of each modulated data packet j are placed in proximity to each other in time and/or frequency.

Abstract: Provided are a communication method in a carrier aggregation system in which a plurality of cells are aggregated, and an apparatus utilizing such a communication method. The plurality of cells can be cells using mutually different frame structures. The communication method receives an uplink grant from a first downlink subframe of a first cell, and transmits a PUSCH from a first uplink subframe of a second cell on the basis of the uplink grant. The uplink grant comprises an uplink DAI, and, with GU being the time interval between the first downlink subframe and the first uplink subframe, the UL DAI indicates the number of downlink subframes, from among the plurality of downlink subframes of the second cell connected so as to transmit an acknowledgement/not-acknowledgement (ACK/NACK) from the first uplink subframe, for which the time interval to the first uplink subframe is equal to or greater than the GU.

Abstract: A communication apparatus includes a receiver, a memory, a processor, and a transmitter. The receiver receives a route information frame and a first frame that is not the route information frame. The memory holds a route information table. The route information table records route information included in the route information frame. When the route information table does not include the source address of the first frame, the processor associates the source address with the address of a transfer-source apparatus that has transferred the first frame to the receiver, and registers these addresses in a registration table. In order to transmit a second frame addressed to a destination apparatus that is not recorded in the route information table, the processor obtains the address of a transfer-source apparatus registered in association with the address of the destination apparatus. The transmitter transmits the second frame to the address obtained by the processor.

Abstract: A method for performing handover between heterogeneous networks by a User Equipment (UE) in a wireless communication system is provided. The method includes periodically sending a first node a measurement report message while being provided a communication service from the first node using a first frequency band, the measurement report message including measurements for the first node and at least one other node using a different frequency band than the first frequency band, and exchanging information, required to perform handover to a second node having a greatest measurement among the at least one other node, with the second node if a handover preparation request message is received from the first node.

Abstract: When relaying a frame received at a MCLAG port to a bridge port, a MCLAG identifier adding unit adds a MCLAG identifier to the frame. When an encapsulated frame to which a MCLAG identifier has been added is received at the bridge port and the encapsulation of the frame, is performed by a peer device, a learning information control unit does not learn an encapsulation address contained in the encapsulated frame. More specifically, the learning information control unit learns a source customer address contained in the frame in association with the MCLAG identifier added to the frame to the address table, but does not learn a source encapsulation address.

Abstract: The invention discloses a small cell base station system, and related devices and data processing methods, and the small cell base station system includes an extended small cell base station and at least one distributed component, where the extended small cell base station includes a network protocol processing module, an upper layer protocol processing module, a physical layer protocol processing module, a first baseband data processing module, and a first transceiver module; and the distributed component includes a second baseband data processing module and a second transceiver module, where in the downlink, the first baseband data processing module separates downlink baseband data into at least two branches, performs a data alignment operation on the at least two branches of downlink baseband data, sends one of the branches to the first transceiver module, and Ethernet encapsulates and then sends the remaining branches to the second transceiver module through the second baseband data processing module of t

Abstract: Disclosed in the present disclosure are a sending method and apparatus for enhanced physical downlink control channel. The method comprises: a start position of the ePDCCH in a subframe is determined according to a high-level signaling and/or preset rule; and a pilot signal for ePDCCH and data carried on the ePDCCH are sent. By applying the present disclosure, the interference between the ePDCCH and the downlink control channel is reduced, and the efficiency of downlink transmission is improved.