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US 9,544,917 B2Granted
Collision avoidance systems and methods
AssigneeIntellectual Ventures I LLC
InventorMenzo Wentink
Life of this patent
Estimating the term…
Abstract
Disclosed herein are various embodiments of collision avoidance systems and methods. One method embodiment, among others, comprises a client sending an end of transmission (EOT) request to an access point (AP), and responsive to the EOT request, the AP responding with an EOT frame.
Claims20
A method, comprising:
- receiving a short frame preceding the start of a transmit opportunity (TXOP) from an access point (AP) to a wireless client at a basic rate to set a network allocation vector (NAY):
- transmitting and receiving a frame at the wireless client with the AP during the TXOP at a non-basic rate:
- and
- receiving a clear to send (CTS) frame from the AP at a basic rate that is configured to truncate the TXOP early, before the network allocation vector clears and prior to the end of the TXOP to avoid an extended interval frame space (EIFS) interval
- wherein the basic rate is selected such that the CTS frame from the AP reaches all nodes in a network to avoid the extended interval frame space (EIFS) interval.
2 more elements
An apparatus comprising:
- a processor;
- and
- a memory having instructions stored thereon that, if executed by the processor, cause the apparatus to:
- receive a short frame preceding the start of a transmit opportunity (TXOP) from an access point (AP) to a wireless client at a basic rate to set a network allocation vector (NAY);
- transmit and receive a frame at the client with the AP during the TXOP at a non-basic rate;
- and
- receive a clear to send (CTS) frame from the AP at a basic rate that is configured to truncate the TXOP early, before the network allocation vector clears and prior to the end of the TXOP to avoid an extended interval frame space (EIFS) interval,
- wherein the basic rate is selected such that the CTS frame from the AP reaches all nodes in a network to avoid the extended interval frame space (EIFS) interval.
5 more elements
An article of manufacture including a non-transitory computer-readable medium having instructions stored thereon comprising:
- instructions for receiving a short frame preceding the start of a transmit opportunity (TXOP) from an access point (AP) to a wireless client at a basic rate to set a network allocation vector (NAV);
- instructions for transmitting and receiving a frame at the client with the AP during the TXOP at a non-basic rate;
- and
- instructions for receiving a clear to send (CTS) frame from the AP at a basic rate that is configured to truncate the TXOP early, before the network allocation vector clears and prior to the end of the TXOP to avoid an extended interval frame space (EIFS) interval,
- wherein the basic rate is selected such that the CTS frame from the AP reaches all nodes in a network to avoid the extended interval frame space (EIFS) interval.
2 more elements
Dependencies are inferred from the claim text.