Method and apparatus for transmitting control information in WLAN system
First Claim
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1. A method of transmitting control information by an access point in a Wireless Local Area Network (WLAN) system, the method comprising:
- generating, by the access point, a first control sequence including a first very high throughput (VHT) control signal containing control information;
generating, by the access point, a second control sequence including at least one second VHT control signal, wherein when the second sequence is generated for a plurality of target stations the second control sequence includes a plurality of second VHT control signals each allowed for a specific target station among the plurality of target stations;
generating, by the access point, a first time domain signal by modulating the first control sequence;
generating, by the access point, a second time domain signal by modulating the second control sequence; and
transmitting, by the access point, the first time domain signal and the second time domain signal to the plurality of target stations,wherein the first VHT control signal includes a multi-user multiple input multiple output (MU-MIMO) indicator indicating whether the second time domain signal is to be transmitted by using a MU-MIMO scheme or a single-user multiple input multiple output (SU-MIMO) scheme.
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Abstract
There is provided a method of transmitting control information in a Wireless Local Area Network (WLAN) system, comprising transmitting first control information by means of cyclic shift delay diversity beam-forming and transmitting second control information. The first control information comprises information necessary for each of a plurality of target stations of the second control information to receive the second control information. The second control information beamformed and transmitted to the plurality of target stations.
31 Citations
12 Claims
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1. A method of transmitting control information by an access point in a Wireless Local Area Network (WLAN) system, the method comprising:
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generating, by the access point, a first control sequence including a first very high throughput (VHT) control signal containing control information; generating, by the access point, a second control sequence including at least one second VHT control signal, wherein when the second sequence is generated for a plurality of target stations the second control sequence includes a plurality of second VHT control signals each allowed for a specific target station among the plurality of target stations; generating, by the access point, a first time domain signal by modulating the first control sequence; generating, by the access point, a second time domain signal by modulating the second control sequence; and transmitting, by the access point, the first time domain signal and the second time domain signal to the plurality of target stations, wherein the first VHT control signal includes a multi-user multiple input multiple output (MU-MIMO) indicator indicating whether the second time domain signal is to be transmitted by using a MU-MIMO scheme or a single-user multiple input multiple output (SU-MIMO) scheme. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless apparatus of transmitting control information in a Wireless Local Area Network (WLAN) system, the apparatus comprising a processor configured to:
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generate a first control sequence including a first very high throughput (VHT) control signal containing control information; generate a second control sequence including at least one second VHT control signal, wherein when the second sequence is generated for a plurality of target stations, the second control sequence includes a plurality of second VHT control signals each allocated for a specific target station among the plurality of target stations; generate a first time domain signal by modulating the first control sequence; generate a second time domain signal by modulating the second control sequence; and transmit the first time domain signal and the second time domain signal to the plurality of target stations, wherein the first VHT control signal includes a multi-user multiple input multiple output (MU-MIMO) indicator indicating whether the second time domain signal is to be transmitted by using a MU-MIMO scheme or a single-user multiple input multiple output (SU-MIMO) scheme. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification