Abstract:
Disclosed is a system and a method of signal transmission/reception by a mobile station in a wireless communication system. The method includes: transmitting a first sub-band preparation indicator, which indicates that the mobile station has been prepared for transmission/reception of a signal through a first sub-band, to a base station through a primary band; transmitting a first sub-band failure indicator to the base station through the primary band upon detecting failure in transmitting the first sub-band preparation indicator; receiving sub-band information on a second sub-band, which is different from the first sub-band, from the BS through the primary band; and acquiring synchronization with the second sub-band, so as to enable transmission/reception of a signal through the second sub-band based on the sub-band information.
Abstract:
A method and an apparatus for controlling uplink power in a wireless communication system are provided. The method for controlling uplink power of a User Equipment (UE) forming a transmission link with a plurality of BSs (BSs), a power headroom report trigger event by at least one of the plurality of BSs is detected. Power headroom information of the UE is reported to at least one of the plurality of BSs.
Abstract:
A 5th-Generation (5G) or pre-5G communication system to support a higher data rate beyond a 4th-Generation (4G) communication system such as long term evolution (LTE) is provided. The method for operating resources by a device included in a first network among a plurality of networks in a wireless communication system where the plurality of networks overlap includes transmitting, to terminals included in the first network, at least one of a beacon signal and a request signal requesting resource allocation information related to adjacent devices respectively included in networks adjacent to the first network, receiving the resource allocation information related to the adjacent devices from the terminals, and reserving a resource to be used for communication based on the received resource allocation information related to the adjacent devices.
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 operating a resource in a first device in a wireless local area network (WLAN) system supporting a multi-user transmission scheme is provided. The method includes determining a number of resource allocation request messages acceptable at a timing point; and transmitting information related to the number of resource allocation request messages, wherein a resource allocation request message is acceptable if the first device is capable of allocating a resource to a second device that transmits the resource allocation request message at the timing point.
Abstract:
A method and an apparatus for supporting multiple frequency assignments in a wireless communication system are provided. An operating method of a Mobile Station (MS) for supporting multicarrier transmission in a wireless communication system includes negotiating a multicarrier operation with a Base Station (BS) during a network entry procedure, when supporting a multicarrier operation mode with the BS, sending a first control message comprising information of every multicarrier configuration supported by the MS, to the BS, receiving a second control message comprising index information of one or more carriers assigned for the multicarrier operation from the BS, and searching for configuration information of carriers corresponding to indexes of the one or more carriers assigned from the BS for the multicarrier operation.
Abstract:
A method of providing an optimal transmission or reception (Tx/Rx) beam in a beamforming system. The method includes receiving a reference signal and selecting an optimal Tx/Rx beam that guarantees an optimal channel environment based on the received reference signal determining a possibility of occurrence of a Tx/Rx beam mismatch between the selected optimal Tx/Rx beam and a Tx/Rx beam used for transmitting information on the selected optimal Tx/Rx beam; and when there is the possibility of the occurrence of the Tx/Rx beam mismatch, performing at least one of widening a beam width of the Tx/Rx beam, increasing a number of Tx/Rx beams, reducing a period of a beam selection operation for selecting the optimal Tx/Rx beam, and reducing a transmission period of the reference signal. Other embodiments including a beamforming system are also disclosed.
Abstract:
A method of determining member Base Stations (BSs) providing cooperative communication to a Mobile Station (MS) in a communication system. The method includes when a candidate list of the member BSs generated using at least one of strengths of signals received from adjacent BSs and cell loading state information of the adjacent BSs is received from the MS, selecting candidate BSs having a service quality larger than or equal to a threshold from candidate BSs included in the candidate list as targets to receive a member negotiation; and performing a capability negotiation with each of the selected targets to receive the member negotiation to select final member BSs and transmitting information on the determined final member BSs to the MS.
Abstract:
An apparatus and method for operating a paging control in a broadband wireless communication system are provided. The method includes receiving paging information used to determine a location of a paging listening interval in an idle mode, determining whether multiple pagings are applied, using a maximum paging number field contained in the paging information, determining locations of a plurality of paging listening intervals in a paging cycle using a paging spacing value and an initial paging offset contained in the paging information, and determining whether the terminal is paged in each of the paging listening intervals.
Abstract:
A method for transmitting a data packet in a transmitting apparatus in a wireless communication system is provided. The method includes receiving first feedback information including buffer status information indicating information related to a status of a buffer included in a receiving apparatus from the receiving apparatus, determining a number of first data packets to be transmitted to the receiving apparatus based on the buffer status information, determining a number of second data packets which is identical to at least one of the number of first data packets based on a data packet loss rate for each of a plurality of paths, and encoding the determined number of first data packets and the determined number of second data packets and transmitting encoded first data packets and encoded second data to the receiving apparatus through each of the plurality of paths.
Abstract:
A method of performing a Network Coding (NC) by a transmitting node in a wireless communication system, the method comprising receiving uplink packets from a plurality of nodes through respective links, grouping the links into at least one group based on channel quality information, each group satisfying a listed range of channel quality information, performing the NC on downlink data for each group and transmitting each scheduling information shared by each group to the at least one respective group. A method of receiving network-coded data in a wireless communication system comprises transmitting an uplink packet to a transmitting node, receiving scheduling information shared by a group of links from the transmitting node, the group of links satisfying a listed range of channel quality information, receiving downlink data on which NC is performed and decoding the downlink data based on the scheduling information.