Method for Establishing HRPD Network Packet Data Service in 1x Network

• US 20070274217A1
• Filed: 11/10/2006
• Published: 11/29/2007
• Est. Priority Date: 05/25/2006
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Li, Zhiming, Long, Shuiping
• Granted Patent: US 8,139,522 B2
• Time in Patent Office: Days
• US Class Current: 370/235
• CPC Class Codes: H04W 36/144 over a different radio air interface technology
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 76/22 Manipulation of transport tunnels
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

A method for an Access Terminal (AT) in a 1x network to establish an High Rate Packet Data (HRPD) network packet data service includes: initiating, by the AT, a session establishment request to a target Access Network/Packet Control Function (AN/PCF) of an HRPD network; establishing, by the target AN/PCF, an HRPD session with the AT after obtaining session information of an existing HRPD session; performing, by the target AN/PCF and the AT, session configuration based on the obtained session information, and establishing a data connection for the packet data service. In the present invention, an AT in the 1x network can establish a packet data service with an HRPD network when there is an existing packet data session in the HRPD network. The present invention is advantageous for seamless service handoff between the 1x network and the HRPD network, thereby realizing complement of the two networks and improving user experience.

Claims

1. A method for establishing a High Rate Packet Data (HRPD) network packet data service in a 1x network, comprising:

initiating, by an Access Terminal (AT), a session establishment request to a target Access Network/Packet Control Function (AN/PCF) of an HRPD network;

establishing, by the target AN/PCF, an HRPD session with the AT after obtaining session information of an existing HRPD session;

performing, by the target AN/PCF and the AT, a session configuration based on the obtained session information, and establishing a data connection for an HRPD network packet data service.

2. The method according to claim 1, wherein the AT performs information interaction with the HRPD network utilizing signaling transmission capacity of an existing 1x network traffic channel to implement the HRPD network packet data service.

3. The method according to claim 2, wherein the existing 1x network traffic channel is a Fundamental Channel (FCH).

4. The method according to claim 3, wherein the channel carries the information flow between the AT and the HRPD network by a data burst message.

5. The method according to claim 1, further comprising:

before the step of initiating a session establishment request to a target AN/PCF of an HRPD network by the AT, creating a channel on an air interface of the 1x network to bear an information flow between the AT and the HRPD network.

6. The method according to claim 5, wherein the step of creating a channel on an air interface of the 1x network to bear an information flow between the AT and the HRPD network comprises:

sending, by the AT, to a Base Station (BS) a service request which comprises a service configuration information record comprising a multiplex option, a traffic channel request and a service ID;

returning, by the BS, a service connection response which comprises valid starting time of the service configuration and a service configuration information record comprising a multiplex option, a traffic channel assignment and a service ID.

7. The method according to claim 6, wherein the created channel is a Dedicated Control Channel (DCCH).

8. The method according to claim 7, wherein the channel carries the information flow between the AT and the HRPD network by a data burst message.

9. The method according to claim 5, wherein the step of creating a channel on an air interface of the 1x network to bear the information flow between the AT and the HRPD network may further comprise:

sending, by the AT, an enhanced origination message to the BS;

sending, by the BS, an adding service request to a Mobile Switching Center (MSC) after returning a BS acknowledgement instruction to the AT;

returning, by the MSC, an assignment request;

sending, by the AT, to the BS a service request which comprises a service configuration information record comprising a multiplex option, a traffic channel request and a service ID;

returning, by the BS, a service connection response which comprises a valid starting time of the service configuration and a service configuration information record comprising a multiplex option, a traffic channel assignment and a service ID.

10. The method according to claim 9, wherein the created channel is a Supplementary Code Channel (SCCH) or a Supplementary Channel (SCH).

11. The method according to claim 10, wherein the channel carries the information flow between the AT and the HRPD network by service data.

12. The method according to claim 1, wherein the step of establishing an HRPD session with the AT after obtaining session information of an existing HRPD session by the target AN/PCF comprises:

verifying, by the target AN/PCF, whether it has all the HRPD session information of the AT, if it does have all the HRPD session information, establishing an HRPD session with the AT;

otherwise, obtaining, by the target AN PCF, HRPD session information from a source AN/PCF, and establishing an HRPD session with the AT.

13. The method according to claim 12, further comprising:

after establishing an HRPD session with the AT by the target AN/PCF, establishing, by the target AN/PCF, a data connection with a Packet Data Service Node (PDSN);

releasing, by the source AN/PCF, the old data connection with the PDSN.

14. The method according to claim 1, wherein the step of performing session configuration based on the obtained session information by the target AN/PCF and the AT comprises:

sending, by the AT, to the target AN/PCF a configuration request which comprises an attribute record;

returning, by the target AN/PCF, a configuration response which comprises another attribute record, wherein the attribute record returned by the target AN/PCF is an attribute supported by both the AT and the target AN/PCF, and is a subset of the attribute record sent by the AT, so that the information flow is configured and the QoS of the information flow is updated.

15. The method according to claim 1, wherein the step of establishing a data connection for an HRPD network packet data service comprises:

sending by the target AN/PCF, a registration request to the PDSN wherein the request comprises the lifecycle of the data connection between the target AN/PCF and the PDSN for the service data transmission;

returning, by the PDSN, a registration response to complete the establishment of the data connection.

16. The method according to claim 1, wherein the information flow between the AT and the HRPD network is transmitted through the target AN/PCF and the 1x BS and the transmission comprises a process of sending the information flow by the BS to the target AN/PCF and a process of sending the information flow by the target AN/PCF to the BS;

wherein

the process of sending the information flow by the BS to the target AN/PCF comprises;

sending, by the BS, an Application Data Delivery Service (ADDS) deliver message to the MSC;

sending, by the MSC, an ADDS Page message to the target AN/PCF;

the process of sending the information flow to the BS by the target AN/PCF comprises;

sending, by the target AN/PCF, a BS service request to the MSC;

sending, by the MSC, an ADDS deliver message to the BS after returning a BS service response to the target AN/PCF.

17. The method according to claim 16, wherein the information flow is carried by an ADDS user part during the transmission between the target AN/PCF and the 1x BS.

18. The method according to claim 1, wherein the information flow between the AT and the HRPD network is transmitted through the target AN/PCF and the 1x BS, and the transmission comprises a process of sending the information flow by the BS to the target AN/PCF and a process of sending the information flow by the target AN/PCF to the BS;

wherein

the process of sending the information flow by the BS to the target AN/PCF comprises;

sending, by the BS, a message including the information flow to the target AN/PCF;

returning, by the target AN/PCF, an acknowledge message to the BS;

the process of sending the information flow to the BS by the target AN/PCF comprises;

sending, by the target AN/PCF, a message including the information flow to the BS;

returning, by the BS, an acknowledge message to the target AN/PCF.