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Wireless communication device and system incorporating location-determining means

A technology of wireless communication equipment and positioning system, which is applied in the field of positioning wireless communication equipment, and can solve problems affecting equipment cost, power consumption and/or performance, affecting equipment size, determining location, etc.

Inactive Publication Date: 2004-11-10
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though the GPS receiver is reduced in size, incorporating a GPS receiver in a wireless communication device still greatly affects the size of the device
Furthermore, known GPS receivers generally do not have sufficient performance capabilities to determine position within areas of interference (e.g., within buildings)
[0006] Any solution to the problem of determining the location of a wireless communication device that involves extensive signal processing operations within the wireless device will dramatically impact the cost, power consumption, and / or performance of the device

Method used

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  • Wireless communication device and system incorporating location-determining means
  • Wireless communication device and system incorporating location-determining means
  • Wireless communication device and system incorporating location-determining means

Examples

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Embodiment Construction

[0017] Detailed description of the preferred embodiment

[0018] Figure 1 shows an exemplary wireless communication device in accordance with the present invention. The system includes a plurality of mobile communication terminals, such as mobile terminal 10, and a plurality of base stations, such as base station 12. Mobile terminal 10 exchanges communication signals with base station 12 in a conventional manner. For purposes of explanation, the invention will be described assuming that the mobile terminal 10 and the base station 12 exchange signals according to Code Division Multiple Access (CDMA) principles. The CDMA signal bandwidth is about 1.2MHz, and the GPS signal bandwidth is about 1MHz. However, it should be understood that the invention is not limited to CDMA systems, and that the principles of the invention can be readily adapted to other types of communication systems.

[0019] The system of Figure 1 operates in conjunction with a positioning system, in this exa...

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PUM

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Abstract

A device, method and system which enables the location of a wireless communication device to be accurately determined without requiring the device to perform extensive signal processing or calculations. The wireless device frequency converts a location-determining signal from an initial frequency to the frequency of a standard communication channel, and transmits the frequency-converted signal to a base station in a conventional manner. A location-determining receiver associated with the base station receives the location-determining signal and determines the location of the wireless communication device based on the location-determining signal.

Description

field of invention [0001] The present invention generally relates to locating wireless communication devices, and in particular to wireless communication devices in interference areas. More specifically, the present invention provides methods, devices and systems incorporating GPS in wireless communication systems. Background of the invention [0002] The development and improvement of wireless communication services and devices continues at an extremely rapid pace. One problem associated with wireless communication devices involves determining the physical location of the device. Locating a wireless communication device may be highly desirable for various purposes—for example, there is a reason to believe that a user associated with the device is in an emergency situation, or when the device is misplaced. Solutions to this problem must be carefully considered within the cost, size, and power consumption constraints of wireless communication systems and devices. This prob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/01G01S5/00G01S5/14G01S19/06G01S19/09G01S19/41G01S19/48H04W64/00
CPCG01S19/41G01S2205/008G01S19/09H04W4/02
Inventor 小W·O·坎普
Owner TELEFON AB LM ERICSSON (PUBL)
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