Troubleshooting; Data Transmission - Huawei MU609 Application Manual

HUAWEI MU609 HSPA LGA Module
Application Guide
Notes:

4.2.1 Troubleshooting

Scenario
Failure to open
ports or register with
a network

4.3 Data Transmission

1.
2.
Common
Terminal
Category
Category 8
Category 10
Category 14
Issue 02 (2013-09-18)
 Using the previously configured profile, the PPP negotiation between the TE and the UE,
and the PDP negotiation between the UE and the network, the TE obtains the IP and DNS
addresses to establish the routing between the TE and the network.
 When establishing data service connections, the TE must start the PPP negotiation after
the UE enters data mode. Otherwise the UE will only enter data mode but will not establish
data connections with the network.
 The data mode means: After entering data mode, the UE only transfers data packets
between the UE and the network, and will not respond to any AT commands except that
comes from the PCUI port.
Possible Error Information
Error xxx: The modem (or
other connected device) is
in use. Note: xxx is usually
a number indicating an
error. For example, 633.
Data can be transmitted after data service connections are established.
According to 3GPP TS 25.306, HSDPA (FDD) terminals are classified into 24
categories. Different categories have different peak data rates. The following
table lists common categories and their key parameters.
Maximum
Number of
Codewords
10
15
15
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External Protocol Stack Application Scenarios
Soft Minimum
Channel Transmission
Size Time Interval
(Bits) (TTI)
134400 1
172800 1
259200 1
Solution
1. Check whether the Modem
port is in use. Ensure that the
Modem port is not being
used by other connections.
2. Check that the current
network is operating
normally. Data service
connections can be
established only when the
network is operating
normally.
Modulation Theoretic
Mode al Peak
Rate
(Mbit/s)
QPSK 7.2
16QAM
QPSK 14.4
16QAM
QPSK 21.6
16QAM
64QAM
28