Method and apparatus for detecting collisions on a network using multi-cycle waveform pulses
First Claim
1. A method of detecting a collision between signal transmissions on a carrier medium in a network, the method including:
- transmitting a first identifier from a transmitter of a network device, the first identifier having a predetermined duration and including a pulse at a temporal location within the first identifier specific to the first identifier, the pulse comprising a multi-cycle waveform having a frequency of greater than 1.1 MHz;
receiving a second identifier at a receiver of the network device, the second identifier having a predetermined duration and including a pulse at a temporal location within the second identifier;
determining whether the temporal location of the pulse within the second identifier corresponds to the temporal location of the pulse within the first identifier; and
if not, then detecting a collision on the network, wherein the transmitting includes propagating a multi-cycle square wave through a filter to generate the multi-cycle waveform.
10 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for detecting a collision between signal transmissions on a carrier medium, such as UTP wiring, are described. The method commences with the transmission of an identifier from a transmitter of a network device. The transmitted identifier has a predetermined duration and includes a pulse at a temporal location within the transmitted identifier specific thereto. A identifier is also received at a receiver of the network device. The received identifier also has a predetermined duration, and includes a pulse at a temporal location therein. A determination is then made as to whether the temporal location of the pulse within the received identifier corresponds to the temporal location of the pulse within the transmitted identifier. If not, a collision is detected on the network.
161 Citations
44 Claims
-
1. A method of detecting a collision between signal transmissions on a carrier medium in a network, the method including:
-
transmitting a first identifier from a transmitter of a network device, the first identifier having a predetermined duration and including a pulse at a temporal location within the first identifier specific to the first identifier, the pulse comprising a multi-cycle waveform having a frequency of greater than 1.1 MHz;
receiving a second identifier at a receiver of the network device, the second identifier having a predetermined duration and including a pulse at a temporal location within the second identifier;
determining whether the temporal location of the pulse within the second identifier corresponds to the temporal location of the pulse within the first identifier; and
if not, then detecting a collision on the network, wherein the transmitting includes propagating a multi-cycle square wave through a filter to generate the multi-cycle waveform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. Apparatus for detecting a collision between signal transmissions on a carrier medium in a network, the apparatus including:
-
a transmitter coupled to transmit a first identifier over the carrier medium, the first identifier having a predetermined duration and including a pulse at a temporal location within the first identifier specific to the first identifier, the pulse comprising a multi-cycle waveform having a frequency of greater than 1.1 MHz;
a receiver coupled to receive a second identifier transmitted over the carrier medium, the second identifier having a predetermined duration and including a pulse at a temporal location within the second identifier; and
a logic circuit, coupled to the receiver, that determines whether the temporal location of the pulse within the second identifier corresponds to the temporal location of the pulse within the first identifier and, if not, that detects a collision on the network, wherein the transmitter includes a filter through which a multi-cycle square wave is propagated to generate the multi-cycle waveform. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
-
-
44. An adapter for providing a coupling between a network station and a carrier medium, the adapter including:
-
a network station interface;
a carrier medium interface;
a transmitter, coupled to the carrier medium interface, configured to transmit a station identifier over the carrier medium, the station identifier being associated with the network station and including a pulse having a temporal location within the station identifier specific to the station identifier, the pulse comprising a multi-cycle waveform having a frequency of greater than 1.1 MHz;
a receiver, coupled to the carrier medium interface, and configured to receive a further station identifier transmitted over the carrier medium, the further station identifier including a pulse at a temporal location; and
a logic circuit, coupled to the receiver, configured to determine whether the temporal location of the pulse within the further station identifier corresponds to the temporal location of the pulse within the station identifier and, if not, to detect a collision, wherein the transmitter includes a filter through which a multi-cycle square wave is propagated to generate the multi-cycle waveform.
-
Specification