HP 83206A, User Manual

Page: 273 / 312

273
Chapter 10, TIA/EIA-136 Basics
Basic Functions of the DCCH in TIA/EIA-136
TIA/EI
A
a
TIA/E
IA-1
3
6
Ba
s
ic
s
Determine Signal Strength Aspects:
The mobile must evaluate the candidate DCCH for the following conditions:
• received signal strength is sufficient
• the maximum power of the mobile meets the system’s allowed maximum power criteria
Determine Service Aspects:
The mobile must evaluate the candidate DCCH for the following conditions:
• if it is a DCCH allocated to the mobile according to its PAID (Paging Channel
Allocation ID)
• if the mobile is barred from using that system
• if the DCCH has the Network Type to which the mobile subscribes
Enter DCCH Camping State:
The DCCH Camping State is analogous to the Analog Control Channel’s Idle
state. From this state all orders can be processed. Additionally, if the mobile
determines it is appropriate to search for a new control channel (either ACC or
DCCH), it can return to the Control Channel Scanning and Locking State.
Call Origination
When a user with a mobile tries to call someone, the mobile makes a call
origination. A mobile can be using either a Digital or Analog Control Channel,
and it can originate a call to use either a DTC or AVC.
When another party makes a call to the mobile, the base sends the page message.
The basic steps in mobile initiated call origination are as follows.
1. Mobile begins in Camping Mode or Idle mode
2. Mobile creates and sends an Origination message
3. Mobile receives a Channel Designation (either DTC or AVC)
4. Mobile invokes Registration Update procedure
5. Mobile tunes to the traffic channel and starts transmitting
6. Mobile enters Conversation Task
There are four types of call originations. These are listed below, and the specific
steps for each type are described in
Table 7, “Call Origination Steps,” on
page 274 .
1. Originate from DCCH to DTC
2. Originate from DCCH to AVC
3. Originate from ACC to DTC
4. Originate from ACC to AVC