Abstract:
A method performed under control of an electronic device may include receiving at least one signal from at least one anchor point; calculating a location of the electronic device based at least in part on the at least one received signal; generating a position proof based at least in part on the at least one received signal; and in response to receiving a position proof request from a server, transmitting the position proof to the server, when the position proof corresponds to the position proof request.
Abstract:
Methods and apparatus are provided for beamforming and information feedback are provided. Signals for beams to be transmitted through corresponding antenna ports, are generated. The beams are formed by precoding the signals with beamforming vectors. The beams are sorted into a number of resource reuse groups based on a resource that is to be shared. The beams are transmitted, using resources allocated per group, to a receiver. Feedback information is generated on at least one antenna port, based on the received beams. The feedback information is transmitted to the transmitter. A beam is selected having a greatest gain for a transmitter using the feedback information. A transmission resource is allocated for the selected beam.
Abstract:
A Channel State Information (CSI) feedback method and apparatus is provided for transmitting, at a base station, the CSIs for plural transmit antennas with a limited amount resource and receiving, at a mobile station, the CSIs efficiently in a massive Multiple Input Multiple Output (MIMO) system operating in the Frequency Division Duplex (FDD) mode.
Abstract:
The present invention relates to a system for controlling a low performance device using web technology by employing an additional control terminal and a method of controlling the same. More particularly, the present invention relates to technology which may be applied to devices not including a low performance processor and a Wi-Fi network (processing in Wi-Fi is also possible). According to an embodiment of the present invention relates to a processing method of controlling a low performance device and providing information to a user using web technology.
Abstract:
An operating method of a communication node in a wireless communication network includes: performing a first monitoring operation on a first link and a second link during a preset period; performing a first random backoff operation in the first link for a first random backoff period, if the first link and the second link are in an idle state according to the first monitoring operation; performing, in the second link, a second random backoff operation for a second random backoff period which is different from the first random backoff period in length; and transmitting a frame at a same point in time in the first link and the second link, if the first link is in the idle state according to the first random backoff operation, and if the state of the second link is an idle state according to execution of the second random backoff operation.
Abstract:
A multiplex transmission method and apparatus in a multi-link wireless LAN are disclosed. An operating method of a first device comprises the steps of: setting a first link linked with a second device and a first service; setting a second link linked with the second device and a second service; and performing communication with the second device by using the first link and/or the second link. Therefore, the performance of a communication system can be improved.
Abstract:
A method and apparatus for low latency communication in a wireless LAN support an enhanced multi-link single radio (eMLSR) operation. A method of operating a station (STA) includes steps of: identifying, by a processor of the station, a restricted target wake time (rTWT) service period (SP) configured by an access point (AP); and receiving, from the AP, a data frame without reception of an initial control frame of the AP within the rTWT SP. A period receivable on multiple spatial streams in a low latency communication service period may be clearly configured, and an eMLSR STA may transmit a frame in the corresponding period. Also, the eMLSR STA may receive the data frame without the reception of the initial control frame of the AP. Accordingly, low latency demands for frame transmission may be satisfied, and the frame may be transmitted at a high speed.
Abstract:
In a method and apparatus for recovery from a transmission error in a communication system, the method for a first device includes the steps of: configuring a TXOP; transmitting, within the TXOP in a first link, a first data frame to a second device; transmitting, within the TXOP in a second link, a second data frame to the second device; performing, in the first link, a monitoring operation for receiving a first reception response frame for the first data frame during a preset time from a point in time of the end of transmission of the first data frame; and if the first reception response frame is not received, determining, by considering a state of the second link, whether or not to perform a retransmission operation for the first data frame.
Abstract:
In a method and device for transmitting and receiving a frame in consideration of the length of data in a communication system supporting multiple links, the method of a first device includes the steps of: receiving a first frame from a second device in a first TXOP on a first link; receiving a second frame from the second device in a second TXOP on a second link; performing a first backoff operation for transmitting a first reception response frame for the first frame on the first link; and “when the first backoff operation is completed and the reception of the second frame is completed”, transmitting the first reception response frame to the second device on the first link.
Abstract:
A method and a device for receiving downlink traffic in a communication system supporting multiple links are disclosed. An operation method of a first device includes the steps of: transmitting a traffic indication map (TIM) through a first link from among multiple links; transmitting, through the first link, first information for indicating one or more links through which a data unit stored in the first device is transmitted; and using the one or more links indicated by the first information, so as to transmit the data unit to a second device indicated by the TIM.