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Method of communicating using a vehicle telematics unit

A telematics, vehicle technology, applied in the field of cellular communication, which can solve problems such as unavailability of wireless device services

Inactive Publication Date: 2016-08-03
GENERAL MOTORS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the signal transmitted by the base station does not support either the forward link portion or the reverse link portion, the wireless device may determine that service is not available

Method used

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  • Method of communicating using a vehicle telematics unit
  • Method of communicating using a vehicle telematics unit
  • Method of communicating using a vehicle telematics unit

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Experimental program
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Embodiment Construction

[0050] The method disclosed below involves transmitting information using a cellular communication system despite the degradation of the quality of a wireless signal received at a wireless device from a cellular base station below a threshold. Using a cellular communication standard, a wireless device can determine whether it is possible to successfully establish a wireless communication channel between the device and a base station, having a forward link portion and a reverse link portion. Cellular communication standards include a number of overall protocol design standards and specifications that attempt to unify the hardware / software elements of cellular communication systems, such as those implemented by the 3rd Generation Partnership Project (3GPP). Such communication criteria may include a number of thresholds for determining whether service is possible. Using the wireless signals transmitted by the base station, the wireless device may receive or establish the forward ...

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PUM

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Abstract

A system and method for extending the cellular range of communications using a vehicle telematics unit. The system includes the vehicle telematics unit which is connected with other vehicle hardware and includes wireless cellular capability for communicating from the vehicle to a call center or other facilities via a wireless communication system. The method carried out by the system includes identifying a cellular base station in wireless communication with a vehicle telematics unit; attempting an emergency call via the identified cellular base station using the vehicle telematics unit; determining that a forward link portion of a cellular signal between the vehicle telematics unit and the identified cellular base station lacks sufficient strength to place the attempted emergency call; and transmitting emergency communications via the identified cellular base station using a reverse link portion of the cellular signal based on the determination.

Description

technical field [0001] The following relates to wireless communications, and more particularly to cellular communications at vehicles. Background technique [0002] Cellular communication involves establishing a wireless communication channel between a wireless device and one or more fixed base stations. Wireless communication channels generally include a forward link portion for transmitting information from a base station to a wireless device and a return link portion for transmitting information from a wireless device to a base station. Both the forward and return link portions are used to establish viable wireless communications with the wireless communication system. During the process of establishing a wireless communication channel, the wireless device can determine whether the signal transmitted by the base station meets the minimum quality required to establish the forward and reverse link portions. However, if the signal transmitted by the base station does not s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/22H04W4/90
CPCH04W76/50H04W4/90
Inventor K.H.伊M.A.维斯內夫斯基E.亚桑S.P.施温克S.K.马哈文
Owner GENERAL MOTORS CORP