Specifications

Call Processing
Packet Data Networking
6-6 68P81095E55-E August 08, 2000
Queued Continuous Reservation ALOHA
Queued Continuous Reservation ALOHA (QCRA) is a standard protocol used to
optimize the buffering and transmission of data across the radio link. If more than
one MS on a cell is using Packet Data, the data from each MS is received and radio
link timeslots are allocated according to the QCRA protocol. This queuing
establishes a method of allocating packet channel resources in response to user and
system load.
Call Processing
The manner of dealing with other communication activities when the MS is currently
involved in Packet Data Networking is summarized in Table 6-2.
Table 6-2 Packet Data Processing
Event State MS in Packet Data Session
Data sent to mobile No conflict
SMS message delivery SMS retries
Incoming Interconnect or Circuit Data No Response to page
Dispatch Group Call Involved mobile is bypassed
Dispatch Private Call Target Not Available sent
Call Alert Target Not Available sent