Techniques for protecting communications in wireless local area networks
First Claim
1. A method of wireless communication comprising:
- transmitting a first message, the first message being addressed to a plurality of wireless devices, the first message including an indication to the plurality of wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time;
receiving a second message from at least one wireless device of the plurality of wireless devices during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and
receiving uplink data from the at least one wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time.
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Accused Products
Abstract
Methods, systems, and devices are described for wireless communications. A network may employ additional contention based parameters to support MU transmissions and to communicate to other devices a duration that protects MU transmission. For example, a first device may transmit a first message to reserve a subband of shared spectrum. The first message may be addressed to multiple devices and may indicate a channel access deferral duration to other devices within transmission range. The non-addressed devices may refrain from accessing the channel for an indicated duration. The addressed devices that receive the first message may respond to the first message with a second message, which may also be used to reserve the channel. The second message may additionally be used to identify those devices that received the first message. The first device may generate a trigger message based on the received second messages.
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Citations
68 Claims
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1. A method of wireless communication comprising:
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transmitting a first message, the first message being addressed to a plurality of wireless devices, the first message including an indication to the plurality of wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time; receiving a second message from at least one wireless device of the plurality of wireless devices during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and receiving uplink data from the at least one wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of wireless communication comprising:
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receiving, by a first wireless device from a second wireless device, a first message addressed to one or more wireless devices, the one or more wireless devices including the first wireless device, the first message including an indication to the one or more wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time; transmitting a second message during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and transmitting uplink data to the second wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. An apparatus for wireless communication, comprising:
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a transmitter for transmitting a first message, the first message being addressed to a plurality of wireless devices, the first message including an indication to the plurality of wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time; a channel monitor for receiving a second message from at least one wireless device of the plurality of wireless devices during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and a receiver for receiving uplink data from the at least one wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An apparatus for wireless communication comprising:
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a receiver for receiving, from a second wireless device, a first message addressed to one or more wireless devices, the one or more wireless devices including the apparatus, the first message including an indication to the one or more wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time; a multi-user (MU) control unit for transmitting a second message during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and a transmitter for transmitting uplink data to the second wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. An apparatus for wireless communication 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; transmit a first message, the first message being addressed to a plurality of wireless devices, the first message including an indication to the plurality of wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time; receive a second message from at least one wireless device of the plurality of wireless devices during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and receive uplink data from the at least one wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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59. An apparatus for wireless communication 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; receive, from a second wireless device, a first message addressed to one or more wireless devices, the one or more wireless devices including the apparatus, the first message including an indication to the one or more wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time; transmit a second message during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and transmit uplink data to the second wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66)
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67. A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:
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transmit a first message, the first message being addressed to a plurality of wireless devices, the first message including an indication to the plurality of wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time; receive a second message from at least one wireless device of the plurality of wireless devices during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and receive uplink data from the at least one wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time.
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68. A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:
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receive, by a first wireless device from a second wireless device, a first message addressed to one or more wireless devices, the one or more wireless devices including the first wireless device, the first message including an indication to the one or more wireless devices to respond within a first duration of time, the first message indicating to unaddressed wireless devices not addressed by the first message to refrain from contending for access to a subband of a shared frequency spectrum band during the first duration of time; transmit a second message during the first duration of time in response to the first message, the second message indicating to the unaddressed wireless devices or to other wireless devices to refrain from contending for access to the subband of the shared frequency spectrum band during a second duration of time; and transmit uplink data to the second wireless device on the subband of the shared frequency spectrum band within the first duration of time or the second duration of time.
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Specification