Contention based access of resources in a wireless network
First Claim
1. A method for contention based accessing of resources by a wireless communication device in an industrial wireless sensor and actuator network employing a wireless time division communication structure, the method being performed by the wireless communication device having data for transmission and comprising the steps of:
- assigning a different frequency to each of the wireless communication device and other competing wireless communication devices, each frequency representing a priority setting,transmitting, in a contention interval, the priority setting of the wireless communication device competing for a resource, said priority setting being transmitted as a carrier wave having a previously-assigned frequency representing the priority setting,receiving, in the contention interval, priority settings of the other competing wireless communication devices having data for transmission, said priority settings being received as carrier waves having previously-assigned frequencies representing these priority settings,comparing the transmitted priority setting with the received priority settings, andseizing a following data interval if the transmitted priority setting is higher than the received priority settings for transmitting data in the following data interval, the data interval having a fixed length.
5 Assignments
0 Petitions
Accused Products
Abstract
A wireless communication device for a wireless network employing a wireless time division communication structure, where the wireless communication device includes a wireless transmitter, a wireless receiver and an access control unit, which is configured to order the wireless transmitter to transmit, in a contention interval, a priority setting of a wireless communication device competing for resources, where the priority setting is transmitted as a signal having a frequency representing the priority setting, order the wireless receiver to receive, in the contention interval, priority settings of other competing wireless communication devices as signals having frequencies representing these priority settings, compare the transmitted priority setting with the received priority settings and seize a following data interval if the transmitted priority setting is higher than the received priority settings.
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Citations
17 Claims
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1. A method for contention based accessing of resources by a wireless communication device in an industrial wireless sensor and actuator network employing a wireless time division communication structure, the method being performed by the wireless communication device having data for transmission and comprising the steps of:
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assigning a different frequency to each of the wireless communication device and other competing wireless communication devices, each frequency representing a priority setting, transmitting, in a contention interval, the priority setting of the wireless communication device competing for a resource, said priority setting being transmitted as a carrier wave having a previously-assigned frequency representing the priority setting, receiving, in the contention interval, priority settings of the other competing wireless communication devices having data for transmission, said priority settings being received as carrier waves having previously-assigned frequencies representing these priority settings, comparing the transmitted priority setting with the received priority settings, and seizing a following data interval if the transmitted priority setting is higher than the received priority settings for transmitting data in the following data interval, the data interval having a fixed length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless communication device for an industrial wireless sensor and actuator network employing a wireless time division communication structure, where the wireless communication device has data to be transmitted and comprises:
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a wireless transmitter, a wireless receiver, and an access control unit configured to; assign a different frequency to each of the wireless communication device and other competing wireless communication devices, each frequency representing a priority setting, order the wireless transmitter to transmit, in a contention interval, the priority setting of the wireless communication device competing for resources, said priority setting being transmitted as a carrier wave having a previously-assigned frequency representing the priority setting, order the wireless receiver to receive, in the contention interval, priority settings of the other competing wireless communication devices having data for transmission, said priority settings being received as carrier waves having previously-assigned frequencies representing these priority settings, compare the transmitted priority setting with the received priority settings, and seize a following data interval if the transmitted priority setting is higher than the received priority settings for transmitting data in the following data interval, the data interval having a fixed length. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A computer program product for a wireless communication device of an industrial wireless sensor and actuator network employing a wireless time division communication structure, where the wireless communication device has data to be transmitted and comprises a wireless transmitter and a wireless receiver,
the computer program product comprising a non-transitory data carrier with computer program code which when run on a processor forming an access control unit of the wireless communication device, causes the access control unit to: -
assign a different frequency to each of the wireless communication device and other competing wireless communication devices, each frequency representing a priority setting, order the wireless transmitter to transmit, in a contention interval, the priority setting of the wireless communication device competing for resources, said priority setting being transmitted as a carrier wave having a previously-assigned frequency representing the priority setting, order the wireless receiver to receive, in the contention interval, priority settings of the other competing wireless communication devices having data for transmission, said priority settings being received as carrier waves having previously-assigned frequencies representing these priority settings, compare the transmitted priority setting with the received priority settings, and seize a following data interval if the transmitted priority setting is higher than the received priority settings for transmitting data in the following data interval, the data interval having a fixed length.
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Specification