Multi-carrier Multi-unit (MCMU) Setup

Last updated: April 2, 2011

This section is only applicable to the lab application and to a test application with the required feature license.

MCMU Test Application Typical Setup Steps

Here is the typical steps for MCMU test application setup.

IMPORTANT

When the Automatic Multi-carrier Setup is successfully performed, the test sets are in a state of Multi-carrier Multi-unit mode (MCMU mode) until after Multi-Carrier Multi-Unit Disconnection , which is the same state as after connection and before disconnection. This results in some restrictions for parameter and action settings. See Connect To External 8960 and Disconnect From External 8960 for the detailed MCMU mode description.

Setup External Device Connection to the Aux unit(s) on the Main unit.

This step configures the IP address of the external devices and other connection related parameters to ensure a valid connection. For the detailed manual operation, see Step 1: Setup Main-to-Aux Connection on the Main Unit .
High Level Setup for the Main unit.

This step configures the test application parameters. For the detailed manual operation, see Step 2: Main Unit High Level Setup .
Automatic Multi-carrier Setup

This step performs the most setups for MCMU configuration. The function `Execute Automatic Setup' is provided to perform a series of necessary setups orderly and automatically. You can either perform the function `Execute Automatic Setup' which will automatically perform Step 3a - Step 3e in MCMU Automatic Setup Steps , or you can individually perform each of the Step 3a - Step 3e. For the detailed setups in this step, see Step 3: Multi-carrier Automatic Setup .
Hardware Connections.

This step connects the AT to all the units with one or two power splitters.
Traffic Configuration, Open a Session and Connection

This step configures the test sets as needed for measurements and other testing (channel configurations, connection, etc.). For the detailed manual operation, see Step 5: Traffic Configuration, Open a Session and Connection

Note that you can only setup settings that are associated with signaling with the AT on the Main unit. However you can setup settings that are not associated with signaling with the AT on each unit independently as desired. For the related settings, see Multi-carrier Parameters Setup Consideration .
Measurement Configuration and Performance
This step configures and performs specific measurements on each unit independently. For the detailed manual operation, see Step 6: Configure and Perform Measurements on Each Unit
NOTE
For the measurements:
- Access Probe Power and Graphical Access Probe Power measurements can only be performed on the Main unit. See Access Probe Power Measurement Description and Graphical Access Probe Power Measurement Description for the detailed information.
- Tx Spurious Emissions measurement is specific to the Main unit versus the Aux unit(s). See TX Spurious Emissions Measurement Description for the detailed information.
Multi-Carrier Multi-Unit Disconnection
This step disconnects the Main unit with the Aux unit(s). For the detailed manual operation, see Step 7: Multi-carrier Multi-unit Disconnection

MCMU Automatic Setup Steps

You can either perform Automatic MC Setup Execute, which will automatically perform Step 3a - Step 3e in the table below, or you can individually perform each of the Step 3a - Step 3e. The table below shows the detailed setups performed on the test sets orderly and automatically when Execute Automatic Setup is selected, see Step 3: Multi-carrier Automatic Setup for the manual operation.

Automatic MC Setup steps
Steps	Notes
3a) Check Connection to the Aux unit(s) On the Main unit Check that at least one Auto Setup External 8960 State is On. See Auto Setup External 8960 1/2 State For the Aux unit(s) Set the External Device Connection Allowed to ON. Check that all the units are of the same firmware version. Check that all the units are with required feature license.	This step should be done prior to or as the first step in Automatic MC Setup Execute.
3b) The Aux unit(s) high level setup On the associated Aux unit Set the Operating Mode to Active Cell. Set the Session Application Type to Test Application. Set the Protocol Rel to B (1xEV-DO-B). Set the Release B Physical Layer Subtype to Subtype_3. Set the Local Testset Configuration to Auxiliary.	This step must be done prior to 3e) Connect Units .
3c) Multi-Unit Synchronization On the Aux unit(s) Set the Ext 8960 IP Addr to IP Address of the Main unit. Perform Multi-unit Synchronization .	This step must be done prior to Traffic Configuration, Open a Session and Connection .
3d) Main Unit PreConfig On the Main unit Perform Session App Pre Configure .	This step must be done after High Level Setup for the Main unit.
3e) Connect Units For the Main unit If the Aux unit 1 is to be connectedPerform Connect To External 8960 If the Aux unit 2 is to be connected Perform Connect To External 8960 2	It is recommended this step is done after 3d) Main Unit PreConfig . This step must be after 3b) The Aux unit(s) high level setup and 3c) Multi-Unit Synchronization .

Operating Considerations

MCMU Test Application Setup Consideration

Automatic MC Setup is only allowed to be executed when Data Connection Status is Idle or Session Open, but it is recommended to keep Data Connection Status at Idle on all units prior to Automatic MC Setup.
If you want to individually perform step 3a) - step 3e):
- in 3c) Multi-Unit Synchronization , it is recommended that the Main unit is setup as the Sync Server.
- it is required that Data Connection Status is Idle during multi-unit synchronization, see Synchronization Configuration Requirements for details.
- If an AT is connected during 3e) Connect Units , it is recommended to force the session to the Idle state prior to Hardware Connections. . To Close Session, you can either by setting the Call Limit Mode to Off and close session, or by setting the Cell Power State to Off and Call Limit to Off. When you force the Data Connection Status to Idle by setting the Cell Power State to Off and Call Limit to Off, make sure that Cell Power is reset to On if you want to negotiate a session at Step 4 or later.
Once a test set is configured as an Aux unit, it will not be able to end a session.
When the test set is in a Multi-carrier Multi-unit mode (see Multi-carrier Multi-unit (MCMU) Overview ), a full preset will result in a disconnection of the external device, but the external device connection will not be affected by a partial preset, and on a certain test set:
- If the Local Testset Configuration is Main, a preset/reset (full or partial) behaves the same way as it is in Single but will also affects the traffic and session status of any connected Aux unit.
- If the Local Testset Configuration is Auxiliary, a preset/reset (full or partial) will only affect the traffic connection if the Local Carrier State is On for this unit and will not affect the session status.

Multi-carrier Parameters Setup Consideration

Multi-unit operation brings about a unique feature to the settings that some settings are shared between multiple units, some settings are set on one unit but also control other unit(s), some settings are unit-independent, and some settings are out-of-scope. The specific behavior is based on Local Testset Configuration configuration.

When configuring a multi-carrier setup, several issues should be considered: setting up the connection and session, setting up for individual carriers, and the general test set configuration (e.g. measurement setups), which will involve setting on the Main unit and/or on the Aux unit(s).

When configuring the overall connection and session negotiation, you should make these settings on the Main unit. These settings are not carrier-specific and are not allowed to be set or shown differently on each unit. These settings will be shared between units. If a parameter is to be used by the Aux unit(s), the value will be set on the Main unit and send to the associated Aux unit like it is `pushed' from the Main unit to the Aux unit.
Related settings categories are:
Settings that are allowed to be set or shown differently on each unit (carrier dependent) and involve Over-The-Air signaling with the AT will be set on the Main unit for all carriers.

Related settings categories are:
Take the parameter of `R-Data Packet Size in "Aux Carriers Info" and the result of `Channel Connected Status' in the Active Cell status area for example, The table below shows how the settings interacted between the Main unit and the Aux units, where the arrow indicates the setting value `pushed' from the Main unit to the Aux unit(s) and the `*' indicates that the setting is out of scope on that unit.
Settings that are allowed to vary between carriers (carrier dependent) but do not involve signaling with the AT will be set on the unit associated with that carrier. On each unit, you can configure these settings for the carrier that is being generated by that unit. The related setups include: measurement related setups and initiations/queries, settings that are not specifically carrier depended but are allowed to vary between test sets.

Related settings categories are:
- Category 1: Parameters and Results that can be set and updated independently on all units.
NOTE
All settings (the Main carrier or the Aux carrier) that are communicated/configured with the AT using Over-The-Air messages must be set on the Main unit since the Main carrier is used for all signaling.