EP1011230A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
System and method for enhanced routing and reservation protocol
Assignee: Siemens Communications Inc
•
Filing: 1999-12-10
•
Granted: —
•
Expires: 2019-12-10
Abstract
Abstract A network node (54, 56, 58 and 60; 130, 132, 134, 136, 138, 140, 142, 144 and 146) and a method of dynamically reconfiguring routes of established connections in a communications system (52;110) operate to provide the optimal path for a new connection based on a priority status of the new connection. The optimal path is provided even when a communication link (36, 38, 40 and 42; 152, 154, 156, 158, 160, 162, 164, 166 and 168) on the optimal path does not have a sufficient amount of available bandwidth to accommodate the new connection. The network node operates in conjunction with other network nodes in the system to reroute one or more established connections that have reserved bandwidth on a communication link on the optimal route and have a lower priority status than the new connection, thereby increasing the available bandwidth on the communication link to accommodate the new connection. The network node also performs conventional functions of a router. The network node and the method can be implemented in any communications system where information is transmitted in packets, blocks, frames or cells. The network node includes a reroute-signal generator (98), a network monitor (96) and a reservation unit (100) that operate with a CPU (94) of the node to perform the rerouting operation.
Inventors
- 👤 Shmuel Schaffer
- 👤 William J. Beyda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:24
CPC Classifications
H; H04; H04L; H04L47/00; H04L47/70; H04L47/82; H04L47/822; H04L45/00; H04L45/12; H04L45/22; H04L45/302; H04L47/72; H04L47/724; H04L47/74; H04L47/745; H04L47/76; H04L47/765; H04L47/80; H04L47/805
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
67 words
A method of dynamically reallocating connectivity
resources in a communications network (52; 110) to
accommodate routing of a new connection through a
primary path comprising the step of: providing a primary path for a new connection by
rerouting one or more particular established
connections on a communication link (36, 38, 40 and 42;
152, 154, 156, 158, 160, 162, 164, 166 and 168) on the
primary path.
Claim 2
Dependent Claim
149 words
A method according to claim 1 comprising the steps
of: monitoring (62) any established connections that
are routed through a communication link (36, 38, 40 and
42; 152, 154, 156, 158, 160, 162, 164, 166 and 168)
that at least partially defines said primary path, said
primary path being from a source node (54, 56, 58 and
60; 130, 132, 134, 136, 138, 140, 142, 144 and 146) to
a destination node (54, 56, 58 and 60; 130, 132, 134,
136, 138, 140, 142, 144 and 146); receiving (64) a request to establish said new
connection from said source node to said destination
node; selectively rerouting (90) at least one particular
connection from said established connections though a
secondary path in response to said request such that
said communication link is bypassed by said secondary
path; and establishing (72)said new connection through said
primary path via said communication link.
Claim 3
Dependent Claim
42 words
A method according to claim 1 or 2 further
comprising a step of selecting (74 and 80) said
particular connection from said plurality of said
established connections, said selection being at least
partly determined by a priority status of said
particular connection.
Claim 4
Dependent Claim
51 words
A method according to claim 3 wherein said step of
selecting (74 and 80) said particular connection
includes determining (74) whether said particular
connection is a data connection for said selection, and
wherein said step of receiving said request is a step
of receiving said request to establish a voice
connection.
Claim 5
Independent Claim
59 words
A method according to any of claims 1 to 4 wherein
said step of rerouting (90) said particular connection
includes redirecting a portion of said particular connection
that had been routed through said communication
link (36, 38, 40 and 42; 152, 154, 156, 158, 160, 162,
164, 166 and 168) such that said redirected portion
circumvents said communication link.
Claim 6
Independent Claim
69 words
A method according to any of claims 2 to 5 further
comprising a step of transmitting (88) a reroute signal
from said source node (54, 56, 58 and 60; 130, 132,
134, 136, 138, 140, 142, 144 and 146) to a node (54,
56, 58 and 60; 130, 132, 134, 136, 138, 140, 142, 144
and 146) associated with said particular connection to
request rerouting of said particular connection.
Claim 7
Independent Claim
68 words
A method according to any of claims 2 to 6 further
comprising a step of receiving (84) at said source node
(54, 56, 58 and 60; 130, 132, 134, 136, 138, 140, 142,
144 and 146) an acknowledgment signal from said node
(54, 56, 58 and 60; 130, 132, 134, 136, 138, 140, 142,
144 and 146) associated with said particular connection
in response to said reroute signal.
Claim 8
Dependent Claim
66 words
A network node (54, 56, 58 and 60; 130, 132, 134,
136, 138, 140, 142, 144 and 146) in a communications
system (52; 110) comprising a processor (94) configured
to compute a primary path for a new connection and a signal generator (98) to provide a reroute
signal when available bandwidth on a communication link
on the primary path is insufficient to accommodate said
new connection.
Claim 9
Dependent Claim
23 words
A network node according to claim 8 in which the
reroute signal reroutes an established connection of
lower priority than the new connection.
Claim 10
Dependent Claim
159 words
A network node (54, 56, 58 and 60; 130, 132, 134,
136, 138, 140, 142, 144 and 146) in a communications
system (52; 110) according to claim 8 or 9 comprising: an interface (92) for receiving and transmitting
data; said processor (94) being operatively associated
with said interface for signal processing said data,
said processor configured to compute a primary path
through said system for a new connection when
requested; and a monitoring device (96) operatively associated
with said processor for monitoring a status of a
communication link (36, 38, 40 and 42; 152, 154, 156,
158, 160, 162, 164, 166 and 168)on said primary path; said signal generator (98) being operatively
coupled to said processor for producing a reroute
signal in response to a request signal received by said
processor to route said new connection, said signal
generator configured to produce said reroute signal
when available bandwidth on said communication link is
insufficient to accommodate said new connection.
Claim 11
Dependent Claim
63 words
A node (54, 56, 58 and 60; 130, 132, 134, 136,
138, 140, 142, 144 and 146) according to any of claims
8 to 10 further comprising memory (102) that is
operatively associated with said processor (94) and
said signal generator (98), said memory containing a
prioritization protocol that is utilized by said
processor to determine a priority status of said new
connection.
Claim 12
Dependent Claim
34 words
A node according to claim 11 wherein said
prioritization protocol (102) is configured to identify
(64) whether said new connection is a voice data
connection to determine said priority status of said
new connection.
Claim 13
Dependent Claim
58 words
A node according to any of claims 8 to 12 further
comprising a reservation device (100) coupled to said
processor (94), said reservation device configured to
generate a reservation signal to reserve bandwidth on
an associated communication link (36, 38, 40 and 42;
152, 154, 156, 158 160, 162, 164, 166 and 168), when
requested by said processor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.