Packet data transmitting method in a CDMA mobile communication system

• US 20030021256A1
• Filed: 07/09/2002
• Published: 01/30/2003
• Est. Priority Date: 07/09/2001
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Jung-Sup
• Granted Patent: US 7,324,483 B2
• Time in Patent Office: Days
• US Class Current: 370/342
• CPC Class Codes: H04L 12/2856 Access arrangements, e.g. Internet access asynchronous transfer mode networks H04L12/5601; broadband local area networks H04L12/2801; optical access or distribution networks H04Q11/0067; access to open networks H04L12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M11/00; home network gateways H04L12/2834; wireless access networks H04W
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation

Abstract

To simplify a protocol structure for a packet data service in a CDMA mobile communication system, an ATM protocol is used for communication between an SGSN and a GGSN and a downlink TEID and an uplink TEID are assigned to an RNC and the GGSN and thereby, GTP tunnels are integrated into one GTP tunnel.

Claims

1. A method of providing a packet data service upon request from an MS (Mobile Station) in a core network including an RNC(Radio Network Controller), an SGSN(Serving General packet radio service Supporting Node), and a GGSN(Gateway GPRS Supporting Node) of a mobile communication system, comprising the steps-of:

transmitting a request message for the packet data service to the core network;

assigning a GTP (GPRS Tunneling Protocol) path for transmitting the packet data; and

assigning uplink and downlink VCCs(virtual Channel connection) wherein at least one VCC among uplink and downlink VCCs is different from the remaining VCCs within the core network.

2. A method of establishing ATM (Asynchronous Transfer Mode) packet data paths via control paths between an RNC (Radio Network Controller) and an SGSN (Serving General packet radio service Supporting Node) and between the SGSN and a GGSN (Gateway GPRS Supporting Node) upon a packet data service request from an MS (Mobile Station) in a core network of a CDMA (Code Division Multiple Access) mobile communication system, the method comprising the steps of:

requesting from the RNC a TEID (Tunnel Endpoint ID) identifying an uplink packet data path by the SGSN upon receipt of the packet data service request from the MS;

assigning by the RNC a first TEID to the SGSN;

assigning by the SGSN to the GGSN the first TEID and a first ATM VCC (Virtual Channel Connection) for data transmission from the GGSN to the SGSN;

assigning by the GGSN to the SGSN a second TEID and a second ATM VCC for data transmission from the SGSN to the GGSN;

assigning by the SGSN to the RNC the second TEID and a third ATM VCC for data transmission from the RNC to the SGSN ; and

assigning by the RNC to the SGSN a fourth ATM VCC for data transmission from the SGSN to the RNC.

3. The method of claim 2, wherein the MS transmits a first QoS to the SGSN when sending the packet data service request to the SGSN.

4. The method of claim 2, wherein the RNC transmits a second QoS and an IP address of the RNC to the SGSN when assigning the first TEID to the SGSN.

5. The method of claim 2, wherein the SGSN transmits a third QoS to the GGSN when assigning the first TEID and the first VCC to the GGSN.

6. The method of claim 2, wherein the GGSN transmits a fourth QoS to the SGSN when assigning the second TEID and the second VCC to the SGSN.

7. The method of claim 2, wherein the SGSN transmits a fifth QoS to the RNC when assigning the second TEID and the third VCC to the RNC.

8. The method of claim 2, wherein the RNC transmits a sixth QoS to the SGSN when assigning the fourth VCC to the SGSN.

9. The method of claim 2, wherein the TEIDs for data transmission from the RNC to the SGSN and from the SGSN to the GGSN are identical.

10. The method of claim 2, wherein the TEIDs for data transmission from the GGSN to the SGSN and from the SGSN to the RNC are identical.

11. The method of claim 2, wherein the first to fourth ATM VCCs are different.

12. A method of providing a packet data service upon request from an MS in a core network of a CDMA mobile communication system, comprising the steps of:

assigning an identical uplink TEID and an identical downlink TEID to an RNC, an SGSN, and a GGSN in the core network;

assigning different uplink and downlink VCCs to the RNC, the SGSN, and the GGSN;

transmitting packet data from the RNC to the SGSN using the downlink TEID and a first downlink VCC for data transmission between the RNC and the SGSN;

transmitting packet data from the SGSN to the GGSN using the downlink TEID and a second downlink VCC for data transmission between the SGSN and the GGSN;

transmitting packet data from the GGSN to the SGSN using the uplink TEID and a first uplink VCC for data transmission between the GGSN and the SGSN; and

transmitting packet data from the SGSN to the RNC using the uplink TEID and a second uplink VCC for data transmission between the SGSN and the RNC.