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3.18 +CCED: Check Cell Environment Description

Description

Retrieves information about the main cell and up to six neighboring cells.

Availability

Since FW version 1.1.1

Not supported by EVDO modems.

Command Syntax

AT+CCED=<mode>[,<requested dump>]

Response Syntax

+CCED : <requested dump>

Defined Values

<mode>

0 Requests a single snapshot of cell data

1 Start automatic snapshot mode

2 Stop automatic snapshot mode

Note: Automatic snapshot mode will not return a terminating "OK". The unsolicited responses

+CCED and/or +CSQ will be used to return the requested information.

0-15 Bitwise sum of the possible following values (see note below):

1 Main Cell: <mode>, <band class>, <Channel #>, SID, NID, <Base

Station P Rev>, [<Pilot PN offset>], <Base Station ID>, [<Slot cycle

index>], [<Ec/Io>], <Rx power>, <Tx power>, <Tx Adj>

2 Neighbor1 to Neighbor20 (max): The first value is the <number of

neighbor entries> in the response. Each neighbor entry consists of

the following values: <band class>, [<Pilot PN>], <Frequency

Assignment>

4 Timing Advance: Always zero for CDMA

8 Main cell RSSI indication (RxLev) from 0 to 31.

Note:

 If the <requested dump> parameter is not specified, the <requested dump> value

from the previous +CCED command will be used. If no previous +CCED <requested

dump> value is available, a default value of 13 (8, 4, and 1) will be used.

 For <requested dump> 4, 2, and 1, the requested information is output using the

unsolicited +CCED response. Place holders are used in the +CCED output for fields

that cannot be measured or are not meaningful in the current mode of operation. In

this case, consecutive commas will be present in the output. There are also several

optional parameters ([]) that are not displayed in analog mode and will result in place

holders in the +CCED command output. Automatic snapshots of these dumps is not

supported during communication or registration.

 For <requested dump> 1, the first value output in the unsolicited +CCED response is

the +CCED command specified <mode> (0, 1, or 2). The value displayed for Ec/Io is

the index of the Active set in 0.5dB steps from 0 (0dB) to 63 (-31.5dB). For example:

0 = 0dB, 1 = 0.5dB, 2 = 1dB, … 62 = 31dB, 63 = 31.5dB. The value displayed for <Rx

power>, <Tx power>, and <Tx Adj> is in terms of dBm.

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 129 130

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BlueTree 5000 Manual de usuario Pagina 28

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