Real Time

Channel Setup: Advanced 1xEV-DO Rev.A Forward

Mode

Traffic Channel Data

Pilot Channel State

Traffic Channel Data Offset

Pilot PN Offset

Idle slot Noise State

MAC Channel State

Idle Slot Noise Gain

ARQ Channel ARQ Mode

Frame Offset

Traffic Channel State

 

Buttons

Opens a Closeddrop-down menu of predefined channel configuration selections. Double-clicking a configuration replaces the current configuration in the Channel Configuration window and displays it at the top of the window.

3GPP2

Mode

Selections: Normal, Continuous Pilot

Default: Normal

Sets the operating mode.

Normal - In this mode, a 1xEV-DO frame with custom channel configurations in each of the frame's 16 slots can be configured. The following forward link channels are supported in normal operating mode: pilot channel, MAC channel, and traffic channel.

Continuous Pilot - This mode provides a fundamental test signal to be used as a troubleshooting tool to verify basic operation of the device under test. As a result, the pilot channel is continuously active over the entire 1xEV-DO frame. In this mode of operation, the pilot channel is the only available channel type.

Pilot Channel State

Selections: On, Off

Default: On

Is the default active channel in every frame and occurs as two distinct burst (in normal mode) in each slot of the frame. It cannot be de-activated.

Pilot PN Offset

Range: 0 to 511

Default: 0

Sets the pilot channel’s PN offset index. The PN offset index of the pilot channel indicates the cell or sector of the transmitting access network.

MAC Channel State

Selections: On, Off

Default: On

Sets the state of the medium access control (MAC) channel for the entire frame. The default selection is ON. Any channel configuration done at the slot level is not valid unless this channel is activated for use in the entire frame.

ARQ Channel ARQ Mode

Selections: 0: Bi-Polar Keying, 1: On-Off Keying

Default: 0: Bi-Polar Keying

Defines the H-ARQ transmission rules. This selection is only available when the MAC channel is on. The access network (AN) transmits H-ARQ bits based on the selected ARQ mode:

If the sector is part of the serving cell, the following keying is used: 

ARQ Mode 0

Bipolar keying:

+1 for ACK, –1 for NAK

ARQ Mode 1

ACK-oriented ON-OFF (OOK) keying:

+1 for ACK, 0 for NAK

If the sector is not part of the serving cell, the value of ARQ Mode is ignored and the AN transmits H-ARQ bits using ACK-oriented ON-OFF keying.

Traffic Channel State

Selections: On, Off

Default: Off

Sets the state of the traffic channel for the entire frame. Any channel configuration done at the slot level is not valid unless the channel is activated for use in the entire frame.

Traffic Channel Data

Selections: PN9, PN15, User Defined Bits

Default: PN15

Allows you to set the data for the channel.

The icon at the right of the entry box opens the ClosedData Source Selection dialog box

The Data Source Selection dialog box allows you to select from PN9, PN15, or User Defined Bits.

To select from the following data types, click the desired radio selection:

PN9

Provides a pseudo-random bit sequence containing 511 bits (29-1). When there are not enough bits left in the PN sequence to fill a frame, the software repeats the data sequence. When the maximum length is reached, it truncates any remaining data. If this is the selection, you are returned to the Channel Setup pane.

PN15

Provides a pseudo-random bit sequence containing 32,767 bits (215-1). When there are not enough bits left in the PN sequence to fill a frame, the software repeats the data sequence. When the maximum length is reached, it truncates any remaining data. If this is the selection, you are returned to the Channel Setup pane.

User Defined Bits

Opens the Closeduser data entry area, which lets you customize the transmitted data.

The user data entry area contains buttons to import, export, or clear user data along with the ability to insert PN9 or PN15 data. Optionally you can manually insert or delete data. To manually insert data, simply place the cursor within the data entry area or highlight existing bits, and insert data. There are three ways to insert data: 

(The key board shortcuts Ctrl+C and Ctrl+V work for user data entry.)

To delete data, simply place the cursor at the desired location within the data or highlight bits, and delete the data. The key board shortcut Ctrl+Z also deletes highlighted data.

The maximum number of bits for the user data entry area is 65,536, which is also the maximum file size.

The expanded area has five buttons that can be used to manipulate data for the channel.

The five buttons in the expanded area are:

Import

Loads a user-defined pattern from a selected location. When you select this button, the Open user defined data dialog box appears for navigating to and selecting the desired file. An imported file automatically updates the user data entry area. The software accepts the following file types:

The maximum file size is 65,536 bits. If the imported file is larger than 65,536 bits, the software truncates the bits to conform to the maximum file size.

Export

Saves the current data pattern, showing in the user data entry area, to a file. When you select this button, a Save user defined data dialog box appears for navigating to the location where you can save the file. The software saves the user data as one of the following selected file types:

Clear

Clears all data showing in the user data entry area.

Insert PN9

Inserts a fixed pattern pseudo-random bit sequence containing 511 bits (29-1) into the user data entry area. The software generates this fixed pattern in accordance with the CCITT recommendation O.153. Repeated clicking of this button adds additional PN9 sequences until the software attains the maximum file size of 65,536 bits. The software truncates data in excess of the maximum file size.

To edit the data pattern, insert the cursor at the desired point in the file and click Insert PN9, or enter the information manually using the keyboard keys 1 and 0. The software inserts the data at the cursor position and truncates all data in excess of 65,536 bits.

Insert PN15

Inserts a fixed pattern pseudo-random bit sequence containing 32,767 bits (215-1) into the user data entry area. The software generates this fixed pattern in accordance with the CCITT recommendation O.153. Repeated clicking of this button adds additional PN15 sequences until the software attains the maximum file size of 65,536 bits. The software truncates data in excess of the maximum file size.

To edit the data pattern, insert the cursor at the desired point in the file and click Insert PN15, or enter the information manually using the keyboard keys 1 and 0. The software inserts the data at the cursor position and truncates all data in excess of 65,536 bits.

Traffic Channel Data Offset

Range: 0 to 32768

Default: 0

Sets the number of bits that the traffic channel data is offset.

Idle Slot Noise State

Selections: On, Off

Default: Off

Allows an idle slot to have a controllable low level of noise, rather than no signal, to improve the on/off ratio that must be handled by the component. This low level of the noise is controlled by the Idle Slot Gain parameter. During idle slot transmission, a large on/off power ratio requires that the access network power amplifier have extremely wide dynamic range. This is typically not the case. To address this issue, the idle slot noise function allows the noise level during the off time of the idle slot to be varied relative to the pilot channel. By varying the idle slot gain, the on/off power ratio can be set as needed to meet the transmission envelope mask requirements of the system. When the idle slot noise is disabled, RF blanking (turning off the RF signal in certain conditions) is automatically enabled, which results in a very large on/off power ratio during idle slot transmission.

Idle Slot Noise Gain

Selections: –80 dB to 0 dB

Default: –10 dB 

Allows the noise level during the off time of the idle slot to be varied relative to the pilot channel. By varying the idle slot gain, the on/off power ratio can be set as needed to meet the transmission envelope mask requirements of the system. To set the idle slot gain, the idle slot noise function must be enabled first.

Frame Offset

Selections: 0 to 15

Default: All 0

Allows you to set a frame offset to assign which parameters, RPC or ARQ, are used for a timeslot. The icon at the right of the cell opens the ClosedFrame Offset dialog box

Set Value...

Accesses a Closeddialog box where you can enter a frame offset (0 to 15) for all 114 RPC channels.

Clear

Clears all previous values and resets all to 0.

RPC Channel

Numbers (1 to 114) the reverse power channels.

MAC Index

Lists the associated MAC index for each channel.

Frame Offset

Allows you to set an individual frame offset for each RPC channel.

Offsets Closedcan be individually set for each MAC channel or all assigned the same value. The RPC parameters are activated when (timeslot + frame offset) mod 4 is equal to 0; otherwise, ARQ parameters are activated.

To set offsets for specific RPC channels, you can highlight an individual row or hold down Ctrl and highlight several rows. If you then right-click a highlighted row, a Closeddialog box appears from which you can select Set Value.... or Clear

Packets

Timeslots