摘要:
A method for increasing transmission efficiency between stations by representing and using a new media access control (MAC) frame format for a management frame of the 802.11a standard in wireless network communication. The method including securing transmission media through a predetermined channel securing procedure at one or more Multiple Input/Multiple Output (MIMO) transmission stations, and constructing information associated with a basic service set (BSS) and a MIMO Supported Rate and carrying the information associated with the BSS and MIMO Supported Rate on the management frame at the MIMO transmission station and transmitting the carried information to at least one reception-sided station by means of the transmission media. In an IBSS network including the stations having different transmission capability, the MIMO Supported Rate information element consisting of the data transfer rate set which the MIMO stations can support is carried and transmitted on a Beacon frame, so that selection of the maximum or efficient transfer rate is guaranteed in the communication between the high-speed stations.
摘要:
A link adaption method for multi input multi output (MIMO) system having a multi-antenna structure and a communicating method of MIMO stations in a basic service set (BSS), which constitutes a wireless communication network. The communicating method includes receiving from a predetermined MIMO station, the number of MIMO antennas and transmission rates supported by the respective MIMO stations. It further includes, storing one or more channel estimations indicators obtained while receiving various framed form the predetermined MIMO station for each MIMO antenna and for each transmission rate supported by the MIMO antenna, determining the threshold levels of the channel estimation for each MIMO antenna, and comparing the threshold levels with an average of channels estimation indicators for each MIMO antenna. The transmission rate is determined based on the comparison result and the data is then transmitted to the predetermined MIMO station ad the determined transmission rate.
摘要:
A wireless communication method used in a wireless infrastructure network including multi input multi output (MIMO) stations. The wireless communication method includes generating a management frame that comprises information on a MIMO contention period during which MIMO stations contend with each other for a channel, and transmitting the management frame. The wireless communication method prevents collisions of frames transmitted from the MIMO stations and from the SISO stations.
摘要:
A wireless local area network (LAN) communication method that includes adaptively determining whether to apply a piggyback according to a communication environment, and transmitting a frame containing two or more kinds of information according to the result of the determination.
摘要:
Methods and apparatuses for setting, transmitting, and receiving virtual carrier sensing information in wireless network communications are provided. A receiving station in a wireless communications network receives a frame transmitted according to various modulation schemes and extracts information concerning virtual carrier sensing from a portion of the frame modulated using a basic modulation scheme, so that virtual carrier sensing is achieved using the extracted virtual carrier sensing information.
摘要:
Methods and apparatuses for setting, transmitting, and receiving virtual carrier sensing information in wireless network communications are provided. A receiving station in a wireless communications network receives a frame transmitted according to various modulation schemes and extracts information concerning virtual carrier sensing from a portion of the frame modulated using a basic modulation scheme, so that virtual carrier sensing is achieved using the extracted virtual carrier sensing information.
摘要:
Provided is a link adaptation method for a multi input multi output (MIMO) system having a multi-antenna structure and a communicating method of MIMO stations in a basic service set (BSS), which constitutes a wireless communication network. The communicating method includes receiving the number of MIMO antennas and transmission rates supported by the respective MIMO antennas from a predetermined MIMO station, storing one or more channel estimation indicators obtained while receiving various frames from the predetermined MIMO station for each MIMO antenna and for each transmission rate supported by the MIMO antenna, determining threshold levels of the channel estimation indicators for each MIMO antenna, comparing threshold levels of channel estimation indicators for each MIMO antenna with an average of channel estimation indicators for each MIMO antenna, and determining a transmission rate based on comparison results to then transmit data to the predetermined MIMO station at the determined transmission rate.
摘要:
Disclosed is a method for transmitting data in a wireless network employing an access point. Each transmission opportunity for transmitting data between the access point and each station is set by using channel state information and traffic state information in relation to stations existing in the same communication area with the access point in a wireless network employing the access point, so that overheads can be reduced and a data processing amount can be improved.
摘要:
Provided are a method and apparatus which can reduce the possibility of collision with other frames when transmitting a broadcast/multicast frame in a wireless local area network (LAN) following a Distributed Coordination Function (DCF) rule, thereby ensuring reliable transmission. The wireless communication method for sending or receiving a predetermined frame through contention between an access point and one or more stations according to DCF is characterized in that the access point uses the shortest of interframe space (IFS) intervals for access to a wireless medium. Therefore, when wireless LAN STAs operate in a DCF mode, the possibility of collision during broadcast or multicast frame transmission can be reduced while adopting conventional CSMA/CA mechanism, thereby improving reliability in successful frame transmission.
摘要:
Provided are a method and apparatus which can reduce the possibility of collision with other frames when transmitting a broadcast/multicast frame in a wireless local area network (LAN) following a Distributed Coordination Function (DCF) rule, thereby ensuring reliable transmission. The wireless communication method for sending or receiving a predetermined frame through contention between an access point and one or more stations according to DCF is characterized in that the access point uses the shortest of interframe space (IFS) intervals for access to a wireless medium. Therefore, when wireless LAN STAs operate in a DCF mode, the possibility of collision during broadcast or multicast frame transmission can be reduced while adopting conventional CSMA/CA mechanism, thereby improving reliability in successful frame transmission.