Abstract:
The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
Abstract:
The present invention relates to methods for transmitting a frame by grouping a plurality of wireless terminals in a multi-user based wireless communication system. The present invention includes a method for transmitting a frame by including information about multiple receiver terminals in a MAC frame, another method for transmitting a frame by allocating group addresses and then using a corresponding group address for frame transmission, and yet another method for transmitting a frame by using a unique group sequence number that is allocated to each group and group control information that contains bitmap information. The group control information is included in a destination address field of a MAC layer, or in a signal field of a physical layer, or in both the MAC layer and the physical layer.
Abstract:
The present invention relates to a method for recovering a frame that failed to be transmitted to a plurality of wireless terminals by using a group number in a MU-MIMO (Multi-User Multiple Input Multiple Output) based wireless communication system. Following the transmission of a frame that requests for a response including group control information to the plurality of wireless terminals, if a response frame is not normally received from a particular wireless terminal, a request frame is transmitted to the wireless terminal that has failed to receive the response frame as a destination, after a period of time for receiving the response frame from each of the plurality of wireless terminals that consists of a group. In another embodiment of the present invention, if the response frame is not normally received from a particular wireless terminal, a request frame is transmitted to wireless terminals starting from the wireless terminal that has failed to receive the response frame down to the last wireless terminal, in accordance with the transmission order of the response frame.
Abstract:
The present invention relates to a method for protecting MU-MIMO (Multi User-Multiple Input Multiple Output) data through a multi-RTS/CTS frame exchange in a MU-MIMO based wireless communication system. The method of the present invention comprises: a process where an indicator for VHT data protection is added to an RTS frame, using the structure of an RTS/CTS frame for an existing legacy terminal during the multi RTS/CTS frame exchange; a process where an access point designates and then transmits the duration period of the RTS frame while transmitting the RTS frame; and a process where wireless terminals up to the (n-1)th terminal designate the duration period of the CTS frame as '0' and send the designated duration period, while only the n-th wireless terminal designates NAV for data protection.
Abstract:
método e equipamentos para transmitir e receber dados em rede local sem fio. a presente invenção refere-se a um método e equipamento para a transcepção de dados. um método em que um terminal de transmissão transmite dados para um terminal de recepção num sistema mimo de acordo com uma modalidade da presente invenção compreende as seguintes etapas: gerar um campo de dados contendo os dados; gerar um campo de sinais contendo informações sobre o campo de dados; gerar um quadro de dados que contém o campo de dados e o campo de sinais; e transmitir o quadro de dados para o terminal de recepção. de acordo com a presente invenção, um final do quadro sendo transmitido é precisamente notificado ao terminal de recepção num sistema de comunicações em que o quadro é transmitido usando mimo, descodificando, desse modo, o quadro de uma forma mais eficiente, no terminal de recepção.
Abstract:
The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
Abstract:
Die vorlegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Senden/Empfangen von Daten. Ein Verfahren, bei welchem ein Sende-Endgerät Daten zu einem Empfangs-Endgerät in einem MIMO-System sendet, gemäß einer Ausführungsform der vorliegenden Erfindung weist die folgenden Schritte auf: Erzeugen eines Datenfelds, das die Daten enthält; Erzeugen eines Signalfelds, das Information bezüglich des Datenfelds enthält; Erzeugen eines Datenframes, der das Datenfeld und das Signalfeld enthält; und Senden des Datenframes zum Empfangs-Endgerät. Gemäß der vorliegenden Erfindung wird ein Ende des Frames, der gerade gesendet wird, dem Empfangs-Endgerät in einem Kommunikationssystem genau mitgeteilt, in welchem der Frame unter Verwendung vom MIMO gesendet wird, um dadurch den Frame bei einem Empfangs-Endgerät auf eine effizientere Weise zu decodieren.
Abstract:
Die vorliegende Erfindung betrifft Verfahren zum Senden eines Rahmens durch Gruppieren einer Vielzahl von Drahtlos-Endgeräten in einem Drahtloskommunikationssystem auf Mehrbenutzerbasis. Die vorliegende Erfindung umfasst ein Verfahren zum Senden eines Rahmens durch Einfügen von Informationen über mehrfache Empfänger-Endgeräte in einen MAC-Rahmen, ein anderes Verfahren zum Senden eines Rahmens durch Zuordnen von Gruppenadressen und dann Verwenden einer entsprechenden Gruppenadresse für Rahmensendahmens durch Verwenden einer eindeutigen Gruppensequenznummer, die jeder Gruppe zugeordnet ist, und Gruppensteuerinformationen, die Bitkarteninformationen enthalten. Die Gruppensteuerinformationen sind in einem Zieladressenfeld einer MAC-Schicht oder in einem Signalfeld einer physikalischen Schicht oder sowohl in der MAC-Schicht als auch der physikalischen Schicht enthalten.
Abstract:
The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
Abstract:
Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Wiederherstellen eines Rahmens, dessen Übertragung zu mehreren drahtlosen Endgeräten unter Verwendung einer Gruppenummer in einem MU-MIMO-basierten (Mehranwender-Mehrfacheingang-Mehrfachausgang-basierten) drahtlosen Kommunikationssystem fehlgeschlagen ist. Nach dem Senden eines Rahmens, der eine Antwort anfordert und der Gruppensteuerinformationen enthält, an die mehreren drahtlosen Endgeräte wird, wenn ein Antwortrahmen von einem speziellen drahtlosen Endgerät nicht normal empfangen wird, ein Anforderungsrahmen nach einer Zeitdauer für das Empfangen des Antwortrahmens von jedem der mehreren drahtlosen Endgeräte, die aus einer Gruppe bestehen, an das drahtlose Endgerät, dem das Empfangen des Antwortrahmens fehlgeschlagen ist, als ein Ziel gesendet. In einer weiteren Ausführungsform der vorliegenden Erfindung wird, wenn der Antwortrahmen von einem speziellen drahtlosen Endgerät nicht normal empfangen wird, ein Anforderungsrahmen an die drahtlosen Endgeräte, beginnend von dem drahtlosen Endgerät, dem das Empfangen des Antwortrahmens fehlgeschlagen ist, herunter bis zum letzten drahtlosen Endgerät in Übereinstimmung mit der Sendereihenfolge des Antwortrahmens gesendet.