TAG: Assisted GPS

Interchangeability Accomplished

May 30, 2014By

Tri-Band Multi-Constellation GNSS in Smartphones and Tablets
In this look at a single-chip BeiDou/Galileo/GLONASS/GPS/QZSS/SBAS architecture for cell phones and tablets, the authors explain advantages of multiple constellations and examine details of system interchangeability, multi-system issues, and how assisted-GNSS data operates with all constellations. read more

u-blox 3G module certified by Korean’s SK Telecom

January 18, 2013By

u-blox, the Swiss positioning and wireless chip and module company, has received approval for its LISA-U110 UMTS/HSPA wireless module from SK Telecom, Korea’s largest mobile telecom operator with more than 50 percent market share. SK Telecom provides multimedia services and connectivity to 24 million customers throughout South Korea. The certification allows the LISA modem to be used in a wide... read more

LiveViewGPS Transforms Cell Phone into Location Device

January 7, 2013By

LiveViewGPS, a GPS tracking company for business, government and individuals, is unveiling a prepaid Mobile Phone Locate Card in Booth #75015 in the Eureka Park area at the International CES Show in Las Vegas this week. The card allows users to transform a cell phone into a 24-hour safety location device for families and businesses without having to buy a... read more

This article is tagged with , and posted in Latest News, Mobile Devices, OEM News

Expert Advice: Getting to Accurate Everywhere Location

February 1, 2012By

In the next two to four years, mobile device location platforms will be able to provide positioning performance that enables emergency call (E911) and location-based services (LBS) with excellent accuracy (5–10 meters) in all locations. We call this accurate everywhere location, and it will be a significant enabler of indoor navigation applications and for even wider adoption of consumer LBS. In fact, we may eventually forget how we ever lived without it. This technology can enhance our lives by enabling our mobile devices to know precisely where we are at all times. Armed with this information, our devices can behave in a way that suits our specific situation, and they can do this without us having to do anything other than keep the phone with us. read more

This article is tagged with , , and posted in LBS/Wireless, Personal Navigation

Opening Up Indoors: Japan’s Indoor Messaging System, IMES

May 1, 2011By

An indoor messaging system (IMES) has been developed to meet the challenges of indoor and deep indoor positioning, as a system that can be implemented in any device that has a GPS/GNSS receiver without hardware modification. IMES can provide reliable 3D position data with a single transmitter device without performing range calculation. read more

This article is tagged with , , , , and posted in Indoor Positioning, LBS/Wireless

Demands of the Road

March 1, 2011By
Figure 3. GNSS performance monitoring using EDAS.

For use in billing drivers in road-user charging schemes, onboard units employing GNSS must meet stringent reliability and availability requirements, and at the same time, be based on low-cost equipment systems. The SIGNATURE unit includes an assistance service which provides ephemeris data and corrections from EDAS, optimized for user location. read more

This article is tagged with , , and posted in Road

Single-Shot Position: Cell-Phone Location without Ephemeris

February 1, 2011By

A new method enables the mobile phone to compute its own position using acquisition assistance data with increased resolution in some of the fields. It benefits network operators as they can deliver the best performance with minimum bandwidth requirements, making this especially relevant in emergency-call situations. read more

This article is tagged with , and posted in Mobile Devices, Wireless Infrastructure

Down and Deep

December 1, 2010By
Figure 1. In Shinjuku, Japan, a receiver tracks nine GPS satellites, but only three (white lines) with direct line of sight, giving an HDOP of 58. Add two QZSS satellites (green) for an HDOP of 3.

As we all know, GPS is practically perfect in every way — as long as it’s outside and unobstructed. Even cell phones can now produce meter-level accuracy under open sky. There are still many deficiencies in state-of-the-art location, particularly in deep urban canyons and inside large buildings. Which technologies will lead personal navigation into the future? read more

This article is tagged with , , and posted in Mobile Devices, Personal Navigation