EP0941010A2
Expired / Lapsed
EP
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Method and apparatus for provisioned and dynamic quality of service in a communications network
Assignee: AT&T Inc
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Filing: 1999-03-02
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Granted: —
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Expires: 2019-03-02
Abstract
Abstract A method and apparatus for providing provisioned and dynamic QoS in a communications network. In one embodiment, provisioned QoS is provided in a network using NHRP by deciding to establish an SVC for a sender and receiver. An NHRP resolution reply containing QoS information is received in response to an NHRP resolution request. An appropriate SVC is then established using the QoS information. In another embodiment, dynamic QoS is provided in a network using RSVP. A first RSVP multicast connection tree with a first QoS is established in response to an RSVP request. When a second RSVP request is received, a new tree is created if the QoS in the second RSVP request is not within a threshold range from the QoS of the first tree. If the QoS in the second RSVP request is within the threshold range, a new branch is added to the first tree and no new RSVP connection tree is required. <IMAGE>
Inventors
- 👤 Kerry W. Fendick
- 👤 Vikram R. Saksena
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 11:50
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5638; H04L2012/5665; H04L2012/5667; H04L2012/5668
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
97 words
A method of providing provisioned quality of service in a communications
network including a sender communications site and a receiver communications site,
comprising the steps of: issuing a resolution request in accordance with an address resolution protocol,
including the Internet protocol address of the receiver communications site; receiving a resolution reply in accordance with the address resolution protocol,
including the asynchronous transfer mode address of the receiver communications site
and quality of service information; and establishing a switched virtual circuit with a quality of service based on the
quality of service information contained in the resolution reply.
Claim 2
Dependent Claim
24 words
The method of claim 1, wherein the quality of service information is based on
the quality of service desired by the receiver communications site.
Claim 3
Dependent Claim
21 words
The method of claim 1, wherein the quality of service information is based on
the capabilities of the receiver communications site.
Claim 4
Dependent Claim
33 words
The method of claim 1, wherein the address resolution protocol is Next Hop
Resolution Protocol (NHRP), the resolution request is an NHRP resolution request and
the resolution reply is an NHRP resolution reply.
Claim 5
Dependent Claim
23 words
The method of claim 2 wherein the quality of service information is contained
in a vendor specific extension of the NHRP resolution reply.
Claim 6
Dependent Claim
18 words
The method of claim 1, wherein said steps of issuing and receiving are
performed at an NHRP client.
Claim 7
Dependent Claim
23 words
The method of claim 1, wherein steps of issuing and receiving are performed at
a communications switch acting as a proxy NHRP client.
Claim 8
Dependent Claim
14 words
The method of claim 1, wherein the quality of service information includes
bandwidth information.
Claim 9
Dependent Claim
30 words
The method of claim 1, wherein the quality of service information can include
peak cell rate information, sustainable cell rate information, minimum cell rate
information and maximum burst size information.
Claim 10
Dependent Claim
39 words
The method of claim 1, further comprising the step of deciding to establish
the switched virtual circuit based on the number of information packets transmitted from
the sender communications site to the receiver communications site and a threshold
value.
Claim 11
Dependent Claim
26 words
The method of claim 1, further comprising the step of deciding to establish
the switched virtual circuit based on the identity of the sender communications site.
Claim 12
Dependent Claim
26 words
The method of claim 1, further comprising the step of deciding to establish
the switched virtual circuit based on the identity of the receiver communications site.
Claim 13
Dependent Claim
31 words
The method of claim 1, further comprising the step of deciding to establish
the switched virtual circuit based on the identity of the sender communications site and
the receiver communications site.
Claim 14
Dependent Claim
24 words
The method of claim 1, further comprising the step of deciding to establish
the switched virtual circuit based on traffic in the communications network.
Claim 15
Independent Claim
83 words
An apparatus to provide provisioned quality of service in a communications
network, comprising: means for issuing a Next Hop Resolution Protocol (NHRP) resolution request
including the Internet protocol address of a receiver communications site; means for receiving an NHRP resolution reply including the asynchronous
transfer mode address of the receiver communications site and quality of service
information; and means for establishing a switched virtual circuit with a quality of service based on
the quality of service information contained in the NHRP resolution reply.
Claim 16
Dependent Claim
23 words
The apparatus of claim 15 wherein the quality of service information is
contained in a vendor specific extension of the NHRP resolution reply.
Claim 17
Dependent Claim
18 words
The apparatus of claim 15, wherein said means for issuing and receiving are
located at an NHRP client.
Claim 18
Dependent Claim
23 words
The apparatus of claim 15, wherein means for issuing and receiving are
located at a communications switch acting as a proxy NHRP client.
Claim 19
Dependent Claim
14 words
The apparatus of claim 15, wherein the quality of service information
includes bandwidth information.
Claim 20
Dependent Claim
30 words
The apparatus of claim 15, wherein the quality of service information can
include peak cell rate information, sustainable cell rate information, minimum cell rate
information and maximum burst size information.
Claim 21
Dependent Claim
34 words
The apparatus of claim 15, further comprising means for deciding to establish
the switched virtual circuit based on at least one of the identity of the sender
communications site and the receiver communications site.
Claim 22
Dependent Claim
23 words
The apparatus of claim 13, further comprising means for deciding to establish
the switched virtual circuit based on traffic in the communications network.
Claim 23
Independent Claim
230 words
A method of providing dynamic quality of service in a communications
network including a sender communications site, a first receiver communications site and
a second receiver communications site, comprising the steps of: receiving a first resource Reservation Protocol (RSVP) request for a connection
from the sender communications site to the first receiver communications site, the first
RSVP request including first quality of service information; establishing a first RSVP connection tree from the sender communications site to
the first receiver communications site, the first RSVP connection tree being a point to
multipoint tree with a first quality of service based on the first quality of service
information; receiving a second RSVP request for a connection from the sender
communications site to the second receiver communications site, the second RSVP
request including second quality of service information; establishing a second RSVP connection tree from the sender communications site
to the second receiver communications site if the second quality of service information is
not within a threshold range from the first quality of service information, the second
RSVP connection tree being a point-to-multipoint tree with a second quality of service
based on the second quality of service information; and adding a branch from the first RSVP connection tree to the second receiver
communications site if the second quality of service information is within the threshold
range from the first quality of service information.
Claim 24
Dependent Claim
48 words
The method of claim 23, wherein said step of adding a branch from the first
RSVP connection tree further comprises the step of: increasing the quality of service of the first RSVP connection tree if the second
quality of service is higher than the first quality of service.
Claim 25
Dependent Claim
172 words
The method of claim 24, further comprising the step of: receiving a third RSVP request for a connection from the sender communications
site to a third receiver communications site, the third RSVP request including third
quality of service information; establishing a new RSVP connection tree from the sender communications site to
the third receiver communications site if the third quality of service information is not
within the threshold range from the first or second quality of service information, the new
RSVP connection tree being a point-to-multipoint tree with a third quality of service
based on the third quality of service information; adding a new branch from the first RSVP connection tree to the third receiver
communications site if the third quality of service information is within the threshold
range from the first quality of service information; and adding a new branch from the second RSVP connection tree to the third receiver
communications site if the third quality of service information is within the threshold
range from the second quality of service information.
Claim 26
Independent Claim
218 words
An apparatus to provide dynamic quality of service in a communications
network, comprising: means for receiving a first resource Reservation Protocol (RSVP) request for a
connection from a sender communications site to a first receiver communications site, the
first RSVP request including first quality of service information; means for establishing a first RSVP connection tree from a sender
communications site to the first receiver communications site, the first RSVP connection
tree being a point-to-multipoint tree with a first quality of service based on the first
quality of service information; means for receiving a second RSVP request for a connection from the sender
communications site to a second receiver communications site, the second RSVP request
including second quality of service information; means for establishing a second RSVP connection tree from the sender
communications site to the second receiver communications site if the second quality of
service information is not within a threshold range from the first quality of service
information, second RSVP connection tree being a point-to-multipoint tree with a second
quality of service based on the second quality of service information; and means for adding a branch from the first RSVP connection tree to the second
receiver communications site if the second quality of service information is within the
threshold range from the first quality of service information.
Claim 27
Dependent Claim
47 words
The apparatus of claim 26, wherein said means for adding a branch from the
first RSVP connection tree further comprises: means for increasing the quality of service of the first RSVP connection tree if the
second quality of service is higher than the first quality of service.
Claim 28
Dependent Claim
175 words
The apparatus of claim 26, further comprising: means for receiving a third RSVP request for a connection from the sender
communications site to a third receiver communications site, the third RSVP request
including third quality of service information; means for establishing a new RSVP connection tree from the sender
communications site to the third receiver communications site if the third quality of
service information is not within the threshold range from the first quality of service
information, the new RSVP connection tree being a point-to-multipoint tree with a third
quality of service based on the third quality of service information; means for adding a new branch from the first RSVP connection tree to the third
receiver communications site if the third quality of service information is within the
threshold range from the first quality of service information; and means for adding a new branch from the second RSVP connection tree to the third
receiver communications site if the third quality of service information is within the
threshold range from the second quality of service information.
Claim 29
Independent Claim
181 words
A method of providing dynamic quality of service in a communications
network including a sender communications site, a first receiver communications site and
a second receiver communications site, comprising the steps of: receiving a first resource Reservation Protocol (RSVP) request for a connection
from the sender communications site to the first receiver communications site, the first
RSVP request including first quality of service information; establishing a first RSVP connection tree from the sender communications site to
the first receiver communications site, the first RSVP connection tree being a point-to-multipoint
tree with a first quality of service based on the first quality of service
information; receiving a second RSVP request for a connection from the sender
communications site to the second receiver communications site, the second RSVP
request including second quality of service information; establishing either a second RSVP connection tree from the sender
communications site to the second receiver communications site or a branch from the first
RSVP connection tree to the second receiver communications site based on the first
quality of service information and the second quality of service information.
References Cited (Backward Citations)
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