Common Control Channel Handling
a) IMMEDIATE_ASSIGNMENT
• /GSM:04.08:9.1.18/
• /GSM:04.08:9.1.19/
b) IMMEDIATE_ASSIGNMENT_REJECT
• /GSM:04.08:9.1.20/
c) PAGING_REQUEST (Normal Paging)
• /GSM:04.08:9.1.22/
• /GSM:04.08:9.1.23/
• /GSM:04.08:9.1.24/
d) PAGING_REQUEST (Extended Paging)
If no messages are queued for transmission:
• IMSIs, TMSIs and IAs stored for retransmission (see the section
Retransmission of messages below) are sent at the same priority
level as described above
• If no messages are stored for retransmission, "Dummy Paging" is
used (see Dummy Paging on page 232)
IMMEDIATE_ASSIGNMENT messages:
The queues are handled in a FIFO (First-In-First-Out) manner when the
following messages are composed:
• IMMEDIATE_ASSIGNMENT
• IMMEDIATE_ASSIGNMENT_EXTENDED (first IA)
• IMMEDIATE_ASSIGNMENT_REJECT (first IAR)
PAGING_REQUEST messages:
The queues are handled in a FIFO manner when the first IMSI or TMSI
intended for a PAGING REQUEST message is dequeued.
Packing of Messages
IMMEDIATE_ASSIGNMENT messages:
If possible, two IAs (queued or stored for retransmission) will be
packed into one IMMEDIATE_ASSIGNMENT_EXTENDED message.
A maximum of four unique IARs can be packed into one
IMMEDIATE_ASSIGNMENT_REJECT message.
PAGING_REQUEST messages:
As many IMSIs and TMSIs as possible (for a certain paging group) will
be packed into one PAGING_REQUEST message (type 1, 2 or 3). If
Extended paging is used (see section Selection of Page Mode below),
IMSIs and TMSIs originating from two different paging groups may be
packed into the same PAGING_REQUEST message.
IMSIs and TMSIs stored for retransmission (in the corresponding
paging stack) are included in the PAGING_REQUEST message if not
enough IMSIs or TMSIs are found in the actual paging queue.
EN/LZT 123 2697 R5A
1998-08-13
231 (306)
© Ericsson Radio Systems AB
— All Rights Reserved —
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