Abstract: A core-shell copolymer, a method of making the same, and a thermoplastic resin composition including the same are disclosed herein. In some embodiments, a core-shell copolymer includes a core and a shell surrounding the core, the core includes a conjugated diene-based monomer-derived repeating unit and a phosphate-based cross-linking agent-derived cross-linking part represented by Formula 1, and the shell includes a first alkyl (meth)acrylate monomer-derived repeating unit, a second alkyl (meth)acrylate monomer-derived repeating unit, and a sulfonate-based ionic monomer-derived repeating unit represented by Formula 2. The core is 68 parts to 92 parts and the shell is 8 parts to 32 parts, based on 100 parts of the core-shell copolymer, the core has a swell index of 2.7 to 10.9, the shell includes 1 wt % to 16 wt % of the sulfonate-based ionic monomer-derived repeating unit, and the shell has a weight average molecular weight of 105,000 g/mol to 645,000 g/mol.

Abstract: Disclosed is a method by which a transmission device transmits data on the basis of a sound signal in a wireless communication system, the method including transmitting a sound packet corresponding to transmission data, with the sound packet including at least one sound symbol, the sound symbol including at least one sound sub-symbol, a plurality of sound symbol types are supported in the wireless communication system, and each of the plurality of sound symbol types is mapped to a preset data value.

Abstract: The present disclosure relates to a sensor network, Machine Type Communication (MTC), Machine-to-Machine (M2M) communication, and technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the above technologies. According to various embodiments of the present disclosure, an apparatus of a first electronic device in a wireless communication system comprises at least one transceiver and at least one processor operatively coupled to the at least one transceiver. The at least one processor is configured to negotiate with a second electronic device, determine a measurement scheme selected from a plurality of measurement schemes using at least one of a wireless signal and a sound signal, based on a result of the negotiation with the second electronic device, and determine a distance between the first electronic device and the second electronic device according to the measurement scheme.

Abstract: Disclosed is a method by which a transmission device transmits data on the basis of a sound signal in a wireless communication system, the method including transmitting a sound packet corresponding to transmission data, with the sound packet including at least one sound symbol, the sound symbol including at least one sound sub-symbol, a plurality of sound symbol types are supported in the wireless communication system, and each of the plurality of sound symbol types is mapped to a preset data value.

Abstract: The present disclosure relates to a 5G or pre-5G communication system which is provided to support a higher data transmission rate after 4G communication systems such as LTE. A first electronic device according to an embodiment of the present invention comprises a control unit, an input unit, an output unit and a communication unit. The input unit recognizes occurrence of a touch input for transmitting or receiving contents, and the communication unit, on the basis of the received signal strength of a search signal or a response signal received from at least one other electronic device, transmits the contents to the at least one other electronic device or receives the contents from the at least one other electronic device.

Abstract: A source node includes a topology information extractor configured to acquire information of a channel state between nodes included in a multicast network, and extract topology information of the multicast network. The source node further includes a relay node selector configured to select, from the nodes, a relay node to relay a packet transmitted from the source node, based on the topology information.

Abstract: The present disclosure relates to a sensor network, Machine Type Communication (MTC), Machine-to-Machine (M2M) communication, and technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the above technologies. According to various embodiments of the present disclosure, an apparatus of a first electronic device in a wireless communication system comprises at least one transceiver and at least one processor operatively coupled to the at least one transceiver. The at least one processor is configured to negotiate with a second electronic device, determine a measurement scheme selected from a plurality of measurement schemes using at least one of a wireless signal and a sound signal, based on a result of the negotiation with the second electronic device, and determine a distance between the first electronic device and the second electronic device according to the measurement scheme.

Abstract: A multiple multicast network system and method for ensuring reliability in such a network are provided. A multiple multicast method in a multiple multicast network system may include grouping terminals having data to be transmitted to each other in a group. The method transmits, by each of the terminals in the group, data of each of the terminals to the other terminals in the group. In response to receiving the data, the method provides, to the terminals in the group, as feedback, missing packet information, and generates, by a terminal among the terminals in the group, a secondary network-coded packet by performing network coding based on a successfully received packet and data of each of the terminal, and transmits the secondary network-coded packet to the other terminals in the group based on the missing packet information.

Abstract: The present disclosure relates to a 5G or pre-5G communication system which is provided to support a higher data transmission rate after 4G communication systems such as LTE. A first electronic device according to an embodiment of the present invention comprises a control unit, an input unit, an output unit and a communication unit. The input unit recognizes occurrence of a touch input for transmitting or receiving contents, and the communication unit, on the basis of the received signal strength of a search signal or a response signal received from at least one other electronic device, transmits the contents to the at least one other electronic device or receives the contents from the at least one other electronic device.

Abstract: A communication method of an access point (AP) for retransmission of a multicast packet in a network including the AP and terminals, includes selecting a candidate terminal to be used to retransmit the multicast packet, from the terminals, and retransmitting the multicast packet, using the candidate terminal.

Abstract: A method of multi-hop cooperative communication includes recognizing a plurality of relays capable of cooperating with one another to amplify or quantize and forward mixed signals received from a plurality of different nodes, selecting a transmission mode from a direct mode for transmission from a base station directly and a cooperation mode for transmission from the base station via the plurality of relays, transmitting data from the base station directly to a terminal through a first radio resource in the direct mode in response to the selected transmission mode being the direct mode, and transmitting data from the base station to the terminal via the plurality of relays through a second radio resource in the cooperation mode in response to the selected transmission mode being the cooperation mode.

Abstract: Provided is a method and a terminal for a multi-hop network. The method includes determining whether channel information is necessary to transmit data processed based on a transmission scheme used in the multi-hop network and outputting a result indicative thereof. The method includes configuring channel information based on the transmission scheme, based on the result. The method further includes transmitting the configured channel information and the data processed using the configured channel information.

Abstract: A method and an apparatus are described for a cooperative scheduling using interference between multiple points. For each link, a cooperation set is set including cooperation links for a cooperative scheduling. A cooperation session map is generated that defines a cooperation link selected from the cooperation set for each link in each session of a network. A cooperation group is determined to be scheduled simultaneously using the cooperation session map.

Abstract: A scheduling method and a scheduling apparatus based on physical layer network coding for bidirectional traffic are provided. The method includes setting up paths passing through a node to perform the physical layer network coding of the bidirectional traffic of sessions that pass through the node. The method further includes requesting, from neighboring nodes of the node, information to be used to schedule the sessions for the physical layer network coding. The method further includes scheduling the sessions for the physical layer network coding based on a queue differential of each session that is calculated based on the information, and a rate of each link of each session.

Abstract: Provided is a method and system for relaying data using a plurality of relay nodes. The method may include obtaining a first channel matrix related to a first-hop channel and a second channel matrix related to a second-hop channel, generating an effective interference channel matrix based on the first channel matrix and the second channel matrix, and calculating a null space vector of the effective interference channel matrix.

Abstract: A source node includes a topology information extractor configured to acquire information of a channel state between nodes included in a multicast network, and extract topology information of the multicast network. The source node further includes a relay node selector configured to select, from the nodes, a relay node to relay a packet transmitted from the source node, based on the topology information.

Abstract: A multiple multicast network system and method for ensuring reliability in such a network are provided. A multiple multicast method in a multiple multicast network system may include grouping terminals having data to be transmitted to each other in a group. The method transmits, by each of the terminals in the group, data of each of the terminals to the other terminals in the group. In response to receiving the data, the method provides, to the terminals in the group, as feedback, missing packet information, and generates, by a terminal among the terminals in the group, a secondary network-coded packet by performing network coding based on a successfully received packet and data of each of the terminal, and transmits the secondary network-coded packet to the other terminals in the group based on the missing packet information.

Abstract: A communication method and a communication apparatus in which a transmission terminal transmits packets to at least one reception terminal, a reception terminal overhears requests for lost packets from other reception terminals and determines whether another request for lost packets is to be transmitted, and the transmission terminal determines whether to respond to requests for lost packets based on additional packets multicast to the reception terminals, rather than simply responding to all requests for lost packets from the reception terminals.

Abstract: An access point (AP) and a terminal and corresponding methods are provided configured to retransmit a multicast packet based on feedback in a network. The network includes the AP and terminals. The communication method of the AP includes transmitting coded packet based multicast packets to the terminals, receiving, from a terminal, a feedback message indicating whether the multicast packets are received in response to the transmission, and retransmitting at least one multicast packet to the terminal in response to the feedback message.

Abstract: A communication method of an access point (AP) for retransmission of a multicast packet in a network including the AP and terminals, includes selecting a candidate terminal to be used to retransmit the multicast packet, from the terminals, and retransmitting the multicast packet, using the candidate terminal.