QoS support method in a high-rate packet data system

• US 20050094611A1
• Filed: 07/13/2004
• Published: 05/05/2005
• Est. Priority Date: 10/30/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Song, Jun-Hyuk, Chang, Yong, Lim, Nae-Hyun, Cheong, Dong-Jo
• Granted Patent: US 7,039,039 B2
• Time in Patent Office: Days
• US Class Current: 370/342
• CPC Class Codes: H04L 47/2408 for supporting different services, e.g. a differentiated services [DiffServ] type of service
• CPC Class Codes: H04L 47/2441 relying on flow classification, e.g. using integrated services [IntServ]
• CPC Class Codes: H04L 47/2491 Mapping quality of service [QoS] requirements between different networks
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/724 at intermediate nodes, e.g. resource reservation protocol [RSVP]
• CPC Class Codes: H04L 47/786 Mapping reservation between domains
• CPC Class Codes: H04L 47/801 Real time traffic
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 28/24 Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation

Abstract

Disclosed is a Quality-of-Service (QoS) Support method in a mobile communication system including an access terminal, an access network for performing packet data communication with the access terminal, a packet control function for controlling transmission and reception of packet data between the access network and the access terminal, and a packet data service node for exchanging packet data with the packet control function. The access terminal maps a requirement based on an application characteristic to an IP QoS parameter, generates a resource reservation protocol message, and transmits the resource reservation protocol message to the packet data service node. The packet data service node maps IP QoS information to be transmitted to the access terminal to QoS information needed in the access network, and transmits the mapping result to the access network via the packet control function. The access terminal receives data including QoS information from the packet data service node, and performs communication according to the QoS information.

Claims

1. A Quality-of-Service (QoS) Support method in a mobile communication system including an access terminal, an access network for performing packet data communication with the access terminal, a packet control function for controlling transmission and reception of packet data between the access network and the access terminal, and a packet data service node for exchanging packet data with the packet control function, the method comprising the steps of:

(a) mapping, by the access terminal, a requirement based on an application characteristic to an Internet Protocol (IP) QoS parameter, generating a resource reservation protocol (RSVP) message, and transmitting the resource reservation protocol message to the packet data service node;

(b) mapping, by the packet data service node, IP QoS information to be transmitted to the access terminal to QoS information needed in the access network, and transmitting the mapping result to the access network via the packet control function; and

(c) receiving, by the access terminal, data including QoS information from the packet data service node, and performing communication according to the QoS information.

2. The QoS Support method of claim 1, wherein the step (b) comprises the steps of:

(b1) determining whether a type of a message received by the packet data service node is defined as a type for Guaranteed Service; and

(b2) classifying a received packet as Conversational Class if the type of the received message is defined as a type for Guaranteed Service.

3. The QoS Support method claim 2, further comprising the step of (b3) determining, by the packet data service node, the received packet as Control Load Service if the type of the received message is not defined as a type for Guaranteed Service, and determining Access Network Traffic Class depending on a port mapping table.

4. The QoS Support method of claim 3, wherein the step (b3) comprises the steps of:

(b3-1) determining whether there is port information mapped to the port mapping table; and

(b3-2) mapping the received packet to Best Effort Service if there is no port information mapped to the port mapping table.

5. The QoS Support method of claim 3, wherein the step (b3) comprises the steps of:

(b3-3) determining whether there is port information mapped to the port mapping table; and

(b3-4) mapping the received packet to Streaming Class or Interactive Class if there is port information mapped to the port mapping table.

6. The QoS Support method of claim 2, wherein the step (b2) comprises the step of determining by the packet data service node whether an error is tolerable if Access Network Traffic Class is not defined, and determining final Access Network Traffic Class according to the determination result.

7. The QoS Support method of claim 5, wherein the step (b3-4) comprises the step of determining by the packet data service node whether an error is tolerable if Access Network Traffic Class is not defined, and determining final Access Network Traffic Class according to the determination result.

8. A Quality-of-Service (QoS) Support method in a packet data service node in a mobile communication system including an access terminal, an access network for performing packet data communication with the access terminal, a packet control function for controlling transmission and reception of packet data between the access network and the access terminal, and the packet data service node for exchanging packet data with the packet control function, the method comprising the steps of:

(a) mapping a requirement based on an application characteristic from the access terminal to an Internet Protocol (IP) QoS parameter, and receiving a resource reservation protocol (RSVP) message; and

(b) mapping IP QoS information to be transmitted to the access terminal to QoS information needed in the access network, and transmitting data including QoS information to the access terminal via the packet control function.

9. The QoS Support method of claim 8, wherein the step (b) comprises the steps of:

(b1) determining whether a type of a message received by the packet data service node is defined as a type for Guaranteed Service; and

(b2) classifying a received packet as Conversational Class if the type of a received message is defined as a type for Guaranteed Service.

10. The QoS Support method of claim 9, further comprising the step of (b3) determining, by the packet data service node, the received packet as Control Load Service if the type of a received message is not defined as a type for Guaranteed Service, and determining Access Network Traffic Class depending on a port mapping table.

11. The QoS Support method of claim 10, wherein the step (b3) comprises the steps of:

(b3-1) determining whether there is port information mapped to the port mapping table; and

(b3-2) mapping the received packet to Best Effort Service if there is no port information mapped to the port mapping table.

12. The QoS Support method of claim 10, wherein the step (b3) comprises the steps of:

(b3-3) determining whether there is port information mapped to the port mapping table; and

(b3-4) mapping the received packet to Streaming Class or Interactive Class if there is port information mapped to the port mapping table.

13. The QoS Support method of claim 9, wherein the step (b2) comprises the step of determining whether an error is tolerable if Access Network Traffic Class is not defined, and determining final Access Network Traffic Class according to the determination result.

14. The QoS Support method of claim 12, wherein the step (b3-4) comprises the step of determining whether an error is tolerable if Access Network Traffic Class is not defined, and determining final Access Network Traffic Class according to the determination result.