Device for avoidance and resolution of channel time reservation conflict in distributed wireless mac systems, and reservation system having the same and method therefor
First Claim
1. A data slot reservation system in a distributed wireless personal area network including at least one device, the data slot reservation system comprising:
- a first device that broadcasts an extended distributed reservation protocol (DRP) availability information element that stores data slot reservation information of at least one neighboring device located within a multiple-hop distance of the first device; and
a second device that checks reservation states of neighboring devices of the first device using the extended DRP availability information element, and performs a data slot reservation negotiation according to a result of the check.
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Abstract
A data slot reservation system in a distributed wireless personal area network including at least one or more devices. The data slot reservation system includes a first device for broadcasting an extended distributed reservation protocol (DRP) availability information element storing data slot reservation information of at least one neighboring device located in a plutality-hop distance; and a second device for checking reservation states of neighboring devices of the first device by using the extended DRP availability information element, and carrying out a data slot reservation negotiation according to a result of the check. Therefore, the data slot reservation system can avoid reservation conflicts all together, or effectively resolve reservation conflicts when they occur.
44 Citations
33 Claims
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1. A data slot reservation system in a distributed wireless personal area network including at least one device, the data slot reservation system comprising:
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a first device that broadcasts an extended distributed reservation protocol (DRP) availability information element that stores data slot reservation information of at least one neighboring device located within a multiple-hop distance of the first device; and
a second device that checks reservation states of neighboring devices of the first device using the extended DRP availability information element, and performs a data slot reservation negotiation according to a result of the check. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device operating in a distributed wireless personal area network, the device comprising:
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an interface part that interfaces with at least one neighboring device operating in the distributed wireless personal area network;
a distributed reservation protocol (DRP) information element generating part that generates a DRP information element for data slot reservation negotiation;
a DRP availability information element generating part that, if the DRP information element is received from at least one neighboring device through the interface part, combines each received DRP information element and generates a DRP availability information element notifying of available data slot information of a current superframe;
an extended DRP availability information element generating part that, if the DRP availability information element is received from at least one neighboring device through the interface part, combines each received DRP availability information element and generates an extended DRP availability information element notifying of data slot reservation information of neighboring devices located within a multiple-hop distance; and
a control part that broadcasts through the interface part the generated DRP information element, the DRP availability information element, and the extended DRP availability information element. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A data slot reservation method for devices operating in a distributed wireless personal area network, the data slot reservation method comprising:
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(a) receiving an extended distributed reservation protocol (DRP) availability information element notifying of data slot reservation information used in a multiple-hop distance about each neighboring device from at least one neighboring device; and
(b) checking reservation states of the neighboring devices with reference to the extended DRP availability information element, and reserving a certain data slot according to a result of the check. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification