DIRECTIONAL LISTEN BEFORE TALK SCHEME
First Claim
1. A method for wireless communication, comprising:
- selecting, by a first wireless device, a direction for a wireless transmission over a channel;
monitoring, by the first wireless device, an availability of the channel in the selected direction for a duration of a first channel listening time corresponding to the selected direction;
determining that the channel is available in the selected direction based at least in part on either an absence of channel reservation messages during the monitoring of a first channel reservation message received during the monitoring, the first channel reservation message indicating a permissibility of a simultaneous transmission by the first wireless device in the selected direction; and
transmitting, by the first wireless device, a second channel reservation message to a second wireless device over the channel in the selected direction based at least in part on the determination that the channel is available in the selected direction.
1 Assignment
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Accused Products
Abstract
Methods, systems, and devices for wireless communication are described. A transmitting wireless device may select a direction for a wireless transmission over a channel The transmitting wireless device may monitor an availability of the channel in the selected direction for a duration of a first channel listening time corresponding to the selected direction. The transmitting wireless device may determine that the channel is available in the selected direction based on either an absence of channel reservation messages during the monitoring, or a first channel reservation message received during the monitoring. The first channel reservation message may indicate a permissibility of a simultaneous transmission in the selected direction. The transmitting wireless device may transmit a second channel reservation message to a receiving wireless device over the channel in the selected direction based on the determination that the channel is available in the selected direction.
33 Citations
30 Claims
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1. A method for wireless communication, comprising:
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selecting, by a first wireless device, a direction for a wireless transmission over a channel; monitoring, by the first wireless device, an availability of the channel in the selected direction for a duration of a first channel listening time corresponding to the selected direction; determining that the channel is available in the selected direction based at least in part on either an absence of channel reservation messages during the monitoring of a first channel reservation message received during the monitoring, the first channel reservation message indicating a permissibility of a simultaneous transmission by the first wireless device in the selected direction; and transmitting, by the first wireless device, a second channel reservation message to a second wireless device over the channel in the selected direction based at least in part on the determination that the channel is available in the selected direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for wireless communication, comprising:
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selecting, by a first wireless device, a direction for a wireless transmission over a channel; monitoring, by the first wireless device, an availability of the channel in the selected direction for a duration of a first channel listening time corresponding to the selected direction; receiving a channel reservation message from an interfering wireless device during the monitoring, the channel reservation message indicating a duration of an interfering transmission; setting a timer associated with the selected direction based at least in part on the duration of the interfering transmission indicated in the channel reservation message; and monitoring, by the first wireless device, an availability of the channel in the selected direction for a duration of a second channel listening time corresponding to the selected direction in response based at least in part on an expiration of the timer, wherein the second channel listening time is shorter than the first channel listening time. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An apparatus for wireless communication, in a system comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to; select, by a first wireless device, a direction for a wireless transmission over a channel; monitor, by the first wireless device, an availability of the channel in the selected direction for a duration of a first channel listening time corresponding to the selected direction; determine that the channel is available in the selected direction based at least in part on either an absence of channel reservation messages during the monitoring or a first channel reservation message received during the monitoring, the first channel reservation message indicating a permissibility of a simultaneous transmission by the first wireless device in the selected direction; and transmit, by the first wireless device, a second channel reservation message to a second wireless device over the channel in the selected direction based at least in part on the determination that the channel is available in the selected direction. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for wireless communication, in a system comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to; select, by a first wireless device, a direction for a wireless transmission over a channel; monitor, by the first wireless device, an availability of the channel in the selected direction for a duration of a first channel listening time corresponding to the selected direction; receive a channel reservation message from an interfering wireless device during the monitoring, the channel reservation message indicating a duration of an interfering transmission; set a timer associated with the selected direction based at least in part on the duration of the interfering transmission indicated in the channel reservation message; and monitor, by the first wireless device, an availability of the channel in the selected direction for a duration of a second channel listening time corresponding to the selected direction in response based at least in part on an expiration of the timer, wherein the second channel listening time is shorter than the first channel listening time. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification