MSM7500 GPS Support Information *NOT a GPS enabled post*

[seigex]

I was reading through the MSM7500 chipset whitepaper and this is the information on the GPS. Keeping in mind the Touch and the Mogul both support this chipset:

gpsOne® position-location assisted-GPS (A-GPS) solution

Highly accurate positioning for location-based services (LBS)

• Next-generation gpsOne® Assisted-GPS solutions provide enhanced GPS engines for greater sensitivity and faster start times

• Enhanced filtering software optimizes GPS accuracy and availability for tracking and satellite navigation applications

from the gpsOne product information sheet:

Key Funcationality:

Supports multiple modes of Assisted-GPS (A-GPS), which leverages GPS satellites and the cellular network for highly reliable positioning capabilities

• Supports Standalone-GPS, which expands the availability of positioning capabilities to areas where cellular networks are not accessible
• Supports gpsOneXTRA Assistance™ technology which provides enhanced operation for Standalone-GPS
• Works in all types of terrains and dense metropolitan areas
• Eliminates traditional lag to first “fix” on location
• Supports IS-95A/B, CDMA2000®, CDMA2000 1X, CDMA2000 1xEV, GSM, GPRS, and WCDMA (UMTS) networks
• Compatible with QUALCOMM’s QPoint™ positioning software for location servers as well as other servers

Notice i highlighted the standalone information. I'm definitely not an expert on HTC phone internals, and I know there are alot of speculation posts; but, I this is definitely interesting reading.

One another note ... The MSM7500 website also states the chipset supports Linux, makes me wonder if there's a posibility of creating a linux based ROM for the phone, hrmmm .... I wonder if there's already an MSM7500 architecture port distributions out there.

[Malatesta]

To be blunt: all gpsOne chips can potentially support Standalone mode, it not something unique to the msm7500.

This is far from new and has always been a part of the chip design.

The issue though is two-fold

1. The device hardware needs an internal GPS antenna for it to work
2. The carrier and/or OEM have to enable it via firmware

Previous devices on Sprint have not had the internal antenna (6700, 700wx) so could not do standalone though theoretically they could do regular aGPS via assisted servers and tower triangulation (like a Razr does). However, this feature was either blocked or not available on those devices.

The Mogul and Touch, however, both have internal GPS antennas allowing them to operate in standalone (theoretically). Currently though, this feature is not enabled and is blocked by Sprint/HTC.

As mentioned numerous times here on ppcgeeks, the Touch is set to receive a firmware upgrade Q1 2008 (along with the Mogul) to enable this feature.

Please search the forums next time in order to prevent posting redundancy.
http://forum.ppcgeeks.com/search.php?searchid=410730
http://forum.ppcgeeks.com/showthread...&highlight=gps
http://forum.ppcgeeks.com/showthread.php?t=12176
http://forum.ppcgeeks.com/showthread.php?t=11874
http://forum.ppcgeeks.com/showthread.php?t=10258


--Mal