Moby Dick Consolidated System Integration Plan

D0103v1.doc Version 1 6.7.2003
associated radio bearer Id, to warn it that the radio bearer is now closed and no data packet for the
associated radio QoS class can be sent.
Send / Receive Data sub-block
The Send / Receive Data sub-block manages the sending and reception of data packets to and from the
AS.
When an IP data packet is received from the RCM, with the associated radio bearer id and SAP Id, the
radio bearer is already opened (this has been taken care of in the RCM, before transmitting this packet).
Therefore, the RCF directly makes a PDCP_DATA_REQ to the AS on the appropriate SAP, to transfer
the data packet to the Radio Gateway, with parameters radio bearer id, data packet length and data packet.
When an IP data packet sent by the Radio Gateway is received from the AS via the message
PDCP_DATA_IND, with parameters: radio bearer id, data packet length and data packet; this IP data
packet is directly transmitted to the Packet Reception block of the RCM.
4.1.2.5 Fast Handover module
MTNM
Set
Network
Preferences
Set
Handover
Preference
Automatic / Manual
Handover
Network
Environment
Infos
Fast RCF Handover Module
Context
Transfer
WCDMA
Connection Manager
Wcdma
Infos
Fast Handover
Execution
Open /
Close
Enhanced IP stack and
Mobile IP stack
Network device drivers
TDCDMA WLAN Ethernet
Figure 16: FHO module and its interfaces
The Fast Handover module must be installed on every Access Router and Mobile Node wanting to
exchange FHO messages in the Moby Dick scenario. It provides the complete Fast Handover IP
mechanism and signalling for fast intra-domain handover. The module must not be triggered for interdomain
handover, since administrative domain distinction within the Moby Dick trial is provided in the
MTNM by comparison of the last two bits of the IPv6 network-prefix. The inter-domain handover will be
handled like a new registration, since this kind of handoff may not be fast, because the home domain must
be contacted.
The following figure sketches the relations of the Fast Handover Linux Kernel Module with the related
Moby Dick components on the Mobile Terminal, i.e., the MTNM, IP/MIPL stack and the network device
drivers.
The Fast Handover module has been implemented as a Linux kernel module, because this provides most
possible independence from the IPv6 and Mobile IPv6 stack and at the same time provides fast message
processing. The fast handover signalling messages are sent via the enhanced IPv6 stack, i.e., deploy the
sending functionality of this stack, and therefore this module does not require awareness of the current
access technology.
D0103v1.doc 33 / 168