HUAWEI MU609 HSPA LGA Module
Application Guide
GPS Application Scenarios
Issue 02 (2013-09-18)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
92
12
GPS Application Scenarios
12.1 Introduction to GPS
12.1.1
GPS Positioning Methods
Table 12-1
GPS positioning methods
Positioning
methods
Description
Benefits
Drawbacks
Standalone
This is a traditional
GPS positioning
method. Using this
method, a module
receives satellite
signals directly and
makes calculations
to obtain
positioning results.
No communication
with the network is
invoked, incurring
no data traffic
between the
module and the
network.
Long time to first fix
(TTFF) in code mode.
Mobile Station
Based (MSB)
positioning
using the User
Plane Protocol
Requests the
assistant data from
the network to
assist and
accelerate the
positioning. This
method is one of
the Assisted GPS
(A-GPS) methods.
Significantly
reduces the
TTFF after cold
start and
increases the
rate of
successful
positioning.
Enables
positioning in
environments
with very poor
satellite signals.
Requires the assistant
data from the network,
incurring network
traffic.