COLLISION AVOIDANCE FOR WIRELESS NETWORKS
First Claim
1. A method, comprising:
- receiving a wireless signal at a particular node in a wireless network from a sending node;
determining, at the particular node, whether the wireless signal is intended for the particular node before the wireless signal is completely received; and
in response to determining that the wireless signal is intended for the particular node, transmitting a non-colliding wireless carrier sense detected alert (CSDA) signal from the particular node while the wireless signal is being received to request that other nodes within communication distance of the particular node, except the sending node, refrain from transmitting for a duration of the received wireless signal.
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Accused Products
Abstract
In one embodiment, a particular node in a wireless network may receive a wireless signal, and may determine whether the wireless signal is intended for itself. In response to determining that the wireless signal is intended for the particular node, the particular node may transmit a non-colliding wireless carrier sense detected alert (CSDA) signal during the received wireless signal to request that other nodes within communication distance of the particular node refrain from transmitting for a duration of the received wireless signal. In another embodiment, a node listens on a first frequency for a wireless CSDA signal regarding a second (colliding) frequency, and in response to receiving a CSDA signal, may refrain from transmitting a wireless signal on the second frequency for the particular duration, or else (if not receiving a CSDA signal), may allow transmission of a wireless signal on the second frequency, accordingly.
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Citations
20 Claims
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1. A method, comprising:
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receiving a wireless signal at a particular node in a wireless network from a sending node; determining, at the particular node, whether the wireless signal is intended for the particular node before the wireless signal is completely received; and in response to determining that the wireless signal is intended for the particular node, transmitting a non-colliding wireless carrier sense detected alert (CSDA) signal from the particular node while the wireless signal is being received to request that other nodes within communication distance of the particular node, except the sending node, refrain from transmitting for a duration of the received wireless signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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one or more wireless network interfaces adapted to receive a wireless signal; a processor coupled to the wireless network interfaces and adapted to execute one or more processes; and a memory configured to store a process executable by the processor, the process when executed operable to; determine, at the apparatus, whether the received wireless signal is intended for the apparatus before the wireless signal is completely received at the apparatus; and transmit, in response to the wireless signal being intended for the apparatus, a non-colliding wireless carrier sense detected alert (CSDA) signal on at least one of the wireless network interfaces while the wireless signal is being received to request that other nodes within communication distance of the apparatus, except the sending node, refrain from transmitting for a duration of the received wireless signal. - View Dependent Claims (13, 14)
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15. A method, comprising:
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listening, on a first frequency at a wireless transmission node in a wireless network, for a wireless carrier sense detected alert (CSDA) signal that requests that receiving nodes refrain from transmitting wireless signals on a second distinct frequency for a particular duration; in response to receiving the CSDA signal, refraining from transmitting a wireless signal on the second frequency for the particular duration; in response to not receiving the CSDA signal, allowing transmission of a wireless signal on the second frequency. - View Dependent Claims (16, 17)
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18. An apparatus, comprising:
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one or more wireless network interfaces to communicated in a wireless network, the interfaces configured to receive wireless transmission on a first frequency, and transmit wirelessly on a second distinct frequency; a processor coupled to the wireless network interfaces and adapted to execute one or more processes; and a memory configured to store a process executable by the processor, the process when executed operable to; listen, on the first frequency, for a wireless carrier sense detected alert (CSDA) signal that requests that receiving nodes refrain from transmitting on the second frequency for a particular duration; refrain from transmitting a wireless signal on the second frequency for the particular duration in response to receiving a CSDA signal; allow transmission of a wireless signal on the second frequency in response to not receiving a CSDA signal. - View Dependent Claims (19, 20)
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Specification