# US 8,542,603 B2 · Distributed resource management in networks

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- Number: US 8,542,603 B2
- Document ID: US8542603B2
- Status: Granted
- Kind: B2
- Application number: 12/611,983
- Filed: 2009-11-04
- Published: 2010-06-10
- Granted: 2013-09-24
- Earliest claimed: 2008-11-05
- Assignees: Alcatel Lucent
- Applicants: Andrey Kisel; Geoffrey Cristallo
- Inventors: Andrey Kisel; Geoffrey Cristallo
- Web page: https://patentgrep.com/patent/US8542603B2

## CPC

- H04W 28/24: Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
- H04L 47/70: Admission control; Resource allocation
- H04L 47/781: {Centralised allocation of resources}
- H04L 67/14: Session management (for real-time applications in data packet communications networks H04L65/1066)
- H04L 67/146: Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding
- H04L 65/612: for unicast
- H04L 65/80: Responding to QoS
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A data communication system is disclosed, comprising a network provided with a control server for managing network resources, and a delivery server for delivering multimedia content to one or more UE (user equipment) devices, wherein the control server is arranged to pass a network session ID, of a network session between the delivery server and the UE device, to the delivery server, and the delivery server is arranged to keep track of the network session independently of the control server, such that once the network session ID of the network session has been passed to the delivery server, the control server keeps no reference to the network session and takes no part therein.

## Claims

### Claim 1

A data communication system, comprising a network provided with a control server for managing network resources, a delivery server for delivering multimedia content to one or more UE (user equipment) devices, and a Resource and Admission Control Server, RACS, characterized in that: the control server is arranged to pass a Quality of Service (QoS) network session ID to the delivery server, said QoS network session ID being returned from the RACS in response to a resource reservation request from the control server for a Content on Demand (CoD) session between the delivery server and the UE device; the delivery server is arranged to keep track of the QoS network session ID independently of the control server, such that once the QoS network session ID has been passed to the delivery server, the control server is stateless with regard to the QoS network session, in which the delivery server is adapted to pass the QoS network session ID back to the control server upon completion of the CoD session; and the control server adapted to instruct the RACS to terminate the QoS network session upon receipt of the QoS network session ID from the delivery server.

### Claim 2 (depends on 1)

A system as claimed in claim 1, wherein the control server is adapted to pass the QoS network session ID to the delivery server during establishment of the CoD session between the delivery server and the UE.

### Claim 3 (depends on 1)

A system as claimed in claim 1, wherein the control server is adapted to pass the QoS network session ID to the delivery server from the control server.

### Claim 4 (depends on 1)

A system as claimed in claim 1 wherein the control server and the UE are arranged to pass the QoS network session ID to the delivery server, via the UE.

### Claim 5 (depends on 4)

A system as claimed in claim 4, wherein the UE is adapted to pass the QoS network session ID to the delivery server using an RTSP 300 REDIRECT message.

### Claim 6 (depends on 4)

A system as claimed in claim 4 wherein the UE is IPTV equipment.

### Claim 7

A method of managing network resources of a network having a control server for managing network resources, a delivery server for delivering multimedia content to one or more UE (user equipment) devices and a Resource and Admission Control Server (RACS); said method characterized by passing a Quality of Service (QoS) network session ID to the delivery server, said QoS network session ID being returned from the RACS in response to a resource reservation request from the control server for a Content on Demand (CoD) session between the delivery server and the UE device;
and keeping track of the QoS network session ID, independently of the control server, using the delivery server, such that once the QoS network session ID has been passed to the delivery server, the control server is stateless with regard to the QoS network session, in which upon completion of the CoD session, the delivery server passes the QoS network session ID back to the control server and the control server regains control, and upon receipt of the QoS network session ID from the delivery server, the control server instructs the RACS to terminate the QoS network session.

### Claim 8 (depends on 7)

A method as claimed in claim 7, wherein the control server passes the QoS network session ID to the delivery server during establishment of the CoD session between the delivery server and the UE.

### Claim 9 (depends on 7)

A method as claimed in claim 7, wherein the QoS network session ID is passed to the delivery server from the control server via the UE.

### Claim 10 (depends on 9)

A method as claimed in claim 9, wherein the QoS network session ID is passed to the delivery server via the UE using an RTSP 300 REDIRECT message.