Enhanced mobile communication device and transportation application

A device and transportation technology, used in wireless communications, traffic control systems, traffic flow detection, etc.

Active Publication Date: 2005-12-07
BLACKBERRY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Operation of wireless networks is relatively more challenging in environments with ...

Method used

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  • Enhanced mobile communication device and transportation application
  • Enhanced mobile communication device and transportation application
  • Enhanced mobile communication device and transportation application

Examples

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Embodiment Construction

[0024] Mobile ad-hoc devices can automatically recognize the presence of and communicate with other compatible ad-hoc wireless devices. For example, when two or more people are participating in a conference, they can form an ad-hoc network to exchange data between their wireless ad-hoc mode enabled PDAs or laptops. In another application, a user's ad-hoc device communicates with a home wireless device to unlock doors, turn on lights and turn on home audio and video equipment units, adjust heating and cooling settings, and the like. These applications resemble spontaneously formed networks, and the mobile device only needs to send a small amount of data in order to execute the application.

[0025] Another mobile ad-hoc application is vehicle-to-vehicle mobile communication, whereby an ad-hoc mobile communication device in a vehicle will allow forming and de-forming an ad-hoc wireless network with other vehicles. These networks can be used to send warning messages to car opera...

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Abstract

An enhanced mobile communication device communicates directly with other enhanced mobile communication devices in an ad-hoc mode over a wireless medium. The device transmits and receives packets of digital data. Network transmission parameters for transmitting the packets of digital data are dynamically customized according to the sender and receiver positions so as to increase the probability that the packets are received. Packet lengths may be varied. The number of times a packet is transmitted may also be varied according to activity in the wireless medium. Attempts to transmit are made periodically and the period of transmission is adjusted according to activity in the wireless medium. In a transportation application, the packets comprise vehicle traffic congestion update information. The device maintains a traffic database and a map database. Traffic congestion update information is exchanged with other devices. Routes through the map from a source or current position of the device to a destination are computed according to an analysis of the traffic database.

Description

[0001] relevant application data [0002] This application claims the priority date of US Patent Application Serial No. 10 / 272,039, filed October 14, 2002, entitled "Ehanced mobile communication device, and transportation application thereof." Background technique [0003] An ad-hoc (ad hoc) wireless network is a freely formed and dismantled network that does not require system management. An ad-hoc network can be mobile, stand-alone, or networked with other networks, such as a wide area network or the Internet. Ad-hoc wireless devices communicating in a wireless area network are capable of detecting the presence of other ad-hoc devices, establishing communication links with the other devices, and transmitting information such as packetized digital data. An ad-hoc network is basically architectureless, since no fixed radio base stations, lines or routers are required in the network. In the process of communicating with each other, ad-hoc devices can use many different packet...

Claims

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Application Information

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IPC IPC(8): G01C21/34G08G1/01H04L12/56
CPCH04L47/10H04W84/18H04L47/14G01C21/3691H04W28/06G08G1/0104H04L47/12G01C21/3492H04W8/04
Inventor 阿希玛基斯·察玛路卡斯P.·迈克尔·法姆瓦尔德
Owner BLACKBERRY LTD
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