Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2002-02-06
2004-09-14
Vu, Huy D. (Department: 2665)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S401000
Reexamination Certificate
active
06791958
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to the field of communication systems, and more particularly, to systems implementing packet data technologies.
BACKGROUND OF THE INVENTION
A network architecture for routing control (signaling) information and bearer traffic in a packet network system is shown in the functional block diagram of FIG.
1
. In the diagram, the flow of control information is shown using dashed lines, the flow of bearer traffic is shown using thin solid lines and the flow of control information and bearer traffic is shown using thick solid lines. When a subscriber is in a first coverage area (A
1
) and requests a service either manually or automatically on powering up his or her wireless communication device, such as mobile station (MS)
108
, certain information about that subscriber is communicated to infrastructure equipment. In particular, the information is communicated to a First Serving Node
104
via a First Access Network Controller (ANC)
106
. This process is generally referred to as establishing a connection. After a connection is established and while the MS
108
remains in the first coverage area, control and bearer traffic transmitted from the MS
108
is routed through the First ANC
106
to the First Serving Node
104
. The First Serving Node
104
processes the control information and forwards the bearer traffic to an appropriate Gateway Node
102
for processing. Control and bearer traffic entering the system through an appropriate Gateway Node
102
is transmitted to the MS
108
through the First Serving Node
104
and First ANC
106
.
As the MS
108
roams from the first coverage area into a new coverage area (A
2
) serviced by a new serving node, Second Serving Node
110
, all control and bearer traffic from and to the MS
108
for the existing connection is routed through the new serving node. However, because the Second Serving Node
110
did not establish the connection, it must obtain information about the MS
108
from the First Serving Node
104
where the connection was established in order to process the signaling information. The node where the connection was established is referred to herein as the anchor node. MS information for a particular connection is maintained at the anchor node to provide simplicity in billing and charging, legal intercept (i.e. wiretapping), Gateway nodes and handover procedures, to name a few. For example, most carriers perform billing and charging functions at the control point (where the connection is established) to minimize complexity and maximize efficiency.
Thus, there is a need for an improved method of routing control information and bearer traffic in a packet network system.
REFERENCES:
patent: 5636217 (1997-06-01), Moelard
patent: 6104929 (2000-08-01), Josse et al.
patent: 6125276 (2000-09-01), Lupien
patent: 6233458 (2001-05-01), Haumont et al.
patent: 6256300 (2001-07-01), Ahmed et al.
patent: 6438370 (2002-08-01), Einola et al.
patent: 6519235 (2003-02-01), Kim et al.
patent: 2001/0019544 (2001-09-01), Bakke et al.
patent: 2001/0048673 (2001-12-01), Verkama et al.
patent: 2002/0015391 (2002-02-01), Kriaras et al.
patent: 2002/0052180 (2002-05-01), Ravishankar et al.
3GPP TS 12.121 “Technical Specification Group Services and Systems Aspects; Architectural Requirements for Release 1999” V3.6.0; Jun. 2002.
Corrigan Richard
Gupta Sanjay
Spear Stephen
Motorola Inc.
Pace Lalita W.
Ryman Daniel
Vu Huy D.
LandOfFree
Method of routing control information and bearer traffic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of routing control information and bearer traffic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of routing control information and bearer traffic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3230336