Appeal 2007-1964
Application 09/940,577
STATEMENT OF THE CASE
Appellants invented an access network for a mobile communications
network that supports a mobile IP protocol. Specifically, an access node is
arranged to check for a preferred mobility agent that should be used. If a
more preferred mobility agent is available which is not the same as the
current one, the connection to the current mobility agent is closed and a new
connection to the preferred mobility agent is opened. Also, agent
advertisement messages sent by the new mobility agent can be received by
the mobile node so that the mobile node can detect the change of attachment
point.1 Claim 1 is illustrative:
1. A method of providing macro mobility management for a mobile
node in an access system comprising a plurality of mobile nodes, a first and
a second access node serving said mobile nodes within first and second parts
of the access system, respectively, at least one first gateway node for
interfacing said first part of the access system with external networks, and a
first mobility entity which is associated with said at least one first gateway
node and arranged to provide macro mobility management routing services
to the mobile nodes while registered to the first part of the access system,
said method comprising:
establishing a session between one of said plurality of mobile nodes
and a second party via said first access node and said first mobility entity;
checking whether there is at least one second mobility entity to which
the first access node can establish a connection as an alternative for the first
mobility entity and which is more preferred for the first access node in
respect of routing than said first mobility entity; and
reacting to said checking by
1 See generally Abstract, ¶¶ 0019-20.
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: September 9, 2013