Specifications

Paging channel protocol development, unidirectional

Paging channel protocol development is a subset of messaging and

protocol development. The ESG Option 201 personality provides fine

control of the paging channel allowing insertion of asynchronous paging

messages. This allows the ESG to communicate to the mobile receiver

in essentially the same way a basestation would. This simplifies the

development and verification of paging commands.

Flexible diagnostic tests for firmware

The flexibility of the Option 201 personality allows testing of various

portions of the firmware. Testing with all Walsh code and long code

combinations, all data rates, convolutional and turbo coding, and other

parameters available to the user helps to ensure that the phone receives

the signals properly under each configuration.

This is very useful in regression testing to make sure that previously

working functions do not break when new features or capabilities are

added to the phone.

Functional tests on single and multiple channels

Functional call setup tests may be performed to make sure decoding

algorithms in the DSP are working properly. The test has the various

Pilot, Sync and Paging channels set up and confirms that the mobile

receiver is able to properly establish communication with them. The

channels may be set up starting with single channels and progress to a

complete multi-channel call to systematically verify the operation of the

receiver.

This basic operational test functions as a design validation step. The

ability to try out one channel at a time helps isolate design issues. An

external fading simulator may be added to verify operation in the midst

of fading.

Response to power control data

The ESG Option 201 personality has a feature that allows a user-defin-

able power control sequence. When on, power puncturing occurs to

cause the mobile phone’s power level to step up a specified amount and

then drop back down as shown in Figure 11. The number of steps may

be defined.

Figure 11. Power control with power puncturing set to 4 Up/Dn

1.25 ms

1 dB

Power

Time

1. In Option 201, power control bits are always transmitted at the same power level as the data bits at all data rates.