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Use of delayed clear-to-send and denial-to-send in directional wireless networks

A wireless network and clear-to-send technology, applied in network topology, network planning, wireless communication, etc.

Active Publication Date: 2011-01-05
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the nature of directional transmission and reception, a new type of hidden terminal problem has been introduced that is not addressed by the standard RTS / CTS protocols

Method used

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  • Use of delayed clear-to-send and denial-to-send in directional wireless networks
  • Use of delayed clear-to-send and denial-to-send in directional wireless networks
  • Use of delayed clear-to-send and denial-to-send in directional wireless networks

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Embodiment Construction

[0016] In the following description, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known circuits, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

[0017] References to "one embodiment," "an embodiment," "exemplary embodiment," "various embodiments," etc. indicate that the embodiments of the invention so described may include a particular feature, structure, or characteristic, but not every Every embodiment must include the specific features, structures or characteristics. Furthermore, some embodiments may have some, all, or none of the features described for other embodiments.

[0018] In the following description and claims, the terms "coupled" and "connected," along with their derivatives, may be used. It should be understood that these terms are not intended as synonyms fo...

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Abstract

For directional wireless communications, at least one new response to a Request-to-Send (RTS) message has been created to avoid a hidden-node problem that is particular to directional networks. In response to an RTS received during a NAV period, a Denial-to-Send (DTS) may be transmitted to indicate that the responding device cannot currently communicate further because its NAV is currently set, but it will be ready to communicate after expiration of the time period specified in the DTS.

Description

technical field [0001] The present invention relates to directional responses in wireless networks. Background technique [0002] The ubiquitous request-to-send / clear-to-send (RTS / CTS) mechanism used in WiFi wireless networks provides many benefits, including alleviating the hidden terminal problem and establishing protection for subsequent data exchange between two devices. Recently, the same RTS / CTS exchange has been proposed for mmWave (eg, 60 GHz) communication, which is characterized by directional communication. However, due to the nature of directional transmission and reception, a new type of hidden terminal problem has been introduced that is not addressed by the standard RTS / CTS protocols. For example, when a first device has established a directional link with a second device in a direction containing an unrelated third device, and detects an RTS from that third device, the first device knows to set its Network Allocation Vector (NAV) , so that it will not trans...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W76/02
CPCH04W84/12H04W84/18H04W74/0816H04W74/002H04W16/28H04W74/08
Inventor C·科尔代罗
Owner INTEL CORP
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