Moby Dick Consolidated System Integration Plan

D0103v1.doc Version 1 6.7.2003
attendant. The respective PBKs are to be extracted from the generic IP paging request message originated
from the Paging Agent.
The remote signalling peers (MT, RG and PA) are shown in the figure above and connected to the IP
paging attendant through a dotted line for illustration purposes.
IP Paging attendant
MT
Signaling
relay
PA
RG
Mapping
function
Enhanced IPv6 proto
DiffServ
IPv6
IPSec
Network device drivers
WLAN
Ethernet
Figure 36: Paging Agent
4.2.2.4.1 Paging Attendant Signalling Relay
The signalling relay block represents the actual attendant function, receiving IP signalling
messages from mobile terminals for Paging Agent (PA) discovery, implicit registration and
paging area update. Furthermore, during a paging process this functional block receives the
generic IP paging procedure related signalling messages from the respective PA. If L2 support
from access technologies is available, the mapping function described in 4.2.2.4.2 performs
appropriate conversion.
Receiving an IP dormant registration message from a mobile terminal, the signalling relay
checks its database for a responsible PA. Alternatively, PA address discovery can be initiated
from the AR or a remote database can be contacted. The dormant registration is to be relayed
to the responsible PA. The reply messages, originated from the PA, have to be relayed back to
the mobile terminal.
In case of receiving a paging request message from a PA, the signalling relay does not process the IP
signalling message. The paging request message content is to be passed to the mapping function.
4.2.2.4.2 Paging Agent Mapping Function
During a paging process, the mapping function is responsible for generating the appropriate on-link
paging request message. This can be either an IP paging message, addressing the Solicited Node
Multicast Address, or a technology proprietary signalling sequence. On L2 support of respective access
technologies, the mapping function represents an additional block for conversion between access
technology specific location management signalling and respective IP signalling.
For paging area update signalling, the mapping function block of the attendant can support a mobile
terminal’s dormant mode if the respective access technology allows tracking and signalling of/from
dormant mobile terminals on L2 mechanisms. The attendant on the first AR of the new paging area could
then map the access technology specific indication to update the paging area to a generic IP paging area
update message, which is to be forwarded to the appropriate PA then. This mechanisms is allowed to be
implemented from paging attendants in ARs, but will not be specified and implemented within the
framework of the Moby Dick project
The mapping function is also responsible for extracting the PBKs from the generic IP paging message
sent from the PA to the respective ARs. This key is to be processed and mapped to the proprietary
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