WIRELESS COMMUNICATION SYSTEM AND ROUTING METHOD FOR PACKET SWITCHING SERVICE, FEMTO AP USING THE ROUTING METHOD

• US 20110103303A1
• Filed: 03/12/2010
• Published: 05/05/2011
• Est. Priority Date: 11/02/2009
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Liang, Ching-Feng, Liao, Hsin-Yu, Hsu, Yu-Ching, Gan, Chai-Hien
• Granted Patent: US 8,265,010 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 61/2514 between local and global IP addresses
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

A wireless communication system, a routing method for a packet switched service, and a Femto AP (FAP) using the routing method are provided. The wireless communication system may include a core network, a broadband IP network, a FAP and at least a user equipment (UE). The UE connects the core network through the FAP and the broadband IP network. The routing method is as follows. The FAP may evaluate a request of the packet switched service sent by the UE, and may reply an accept message to the UE. The accept message may include a FAP address. The UE may use the FAP address to send a packet switching data to the FAP in order to obtain the packet switched service. The FAP may directly conduct the packet switched service with a packet switched service supply end through the broadband IP network without routing through the core network.

Claims

1. A wireless communication system, comprising:

a mobile core network, for providing a plurality of services;

a broadband IP network, connected to the mobile core network and a packet switched service supply end;

a Femto access point (FAP), connected to the broadband IP network, wherein the FAP has a session management function; and

a user equipment (UE), connected to the FAP through a wireless approach, so as to connect the broadband IP network through the FAP, and establish a connection channel with the mobile core network to obtain one or a plurality of services,

wherein when the UE performs a packet switched service request, a request message is sent according to a request procedure, the FAP evaluates the request message and replies an accept message to the UE, wherein the accept message comprises a setting address provided by the FAP, and the UE sends a packet switching data to the FAP according to the setting address in order to obtain the packet switched service, and the FAP directly conduct the packet switched service with the packet switched service supply end through the broadband IP network.

2. The wireless communication system as claimed in claim 1, wherein the request procedure comprises an activate packet data protocol (PDP) context request message and an activate PDP context accept message.

3. The wireless communication system as claimed in claim 2, wherein after the FAP evaluates the activate PDP context request message and before the FAP replies the activate PDP context accept message to the UE, a radio access bearer setup procedure is performed to confirm whether a session state satisfies a session quality of service (QoS) demand.

4. The wireless communication system as claimed in claim 1, wherein the setting address provided by the FAP is one of a plurality of configuration addresses that is selected as the setting address and assigned to the UE.

5. The wireless communication system as claimed in claim 1, wherein the setting address provided by the FAP is a private Internet protocol (IP) address that is generated by the FAP and assigned to the UE.

6. The wireless communication system as claimed in claim 1, wherein the setting address provided by the FAP is a PDP address obtained by the FAP from the mobile core network through the broadband IP network, and the PDP address is mapped to a FAP address for storage, when the UE sends the packet switching data according to the PDP address in order to obtain the packet switched service, the FAP obtains the mapped FAP address according to the PDP address, and modifies a source address of the packet switching data from the PDP address to the FAP address, and directly conducts the packet switched service with the packet switched service supply end through the broadband IP network, and regarding a replied packet switching data directly transmitted back by the packet switched service supply end through the broadband IP network, the FAP modifies a destination address thereof to the PDP address, and transmits it to the UE.

7. The wireless communication system as claimed in claim 6, wherein the PDP address generated by the mobile core network is provided by a serving general packet radio service (GPRS) support node (SGSN), and a gateway GPRS support node (GGSN).

8. The wireless communication system as claimed in claim 1, wherein the UE and the FAP are connected through a standard mobile communication access protocol.

9. A routing method for a packet switched service, suitable for a wireless communication system including a mobile core network, a broadband IP network, a Femto AP (FAP) and a user equipment (UE), wherein the broadband IP network is connected to the mobile core network and a packet switched service supply end, and the UE is connected to the mobile core network through the FAP and the broadband IP network, the routing method for the packet switched service comprising:

sending a request message according to a request procedure when the UE performs a packet switched service request;

evaluating the request message and correspondingly replying an accept message to the UE by the FAP, wherein the accept message comprises a setting address provided by the FAP;

sending a packet switching data to the FAP by the UE according to the setting address in order to obtain the packet switched service; and

conducting the packet switched service with the packet switched service supply end by the FAP through the broadband IP network.

10. The routing method for the packet switched service as claimed in claim 9, wherein the request procedure comprises an activate packet data protocol (PDP) context request message and an activate PDP context accept message.

11. The routing method for the packet switched service as claimed in claim 10, wherein after the FAP evaluates the activate PDP context request message and before the FAP replies the activate PDP context accept message to the UE, a radio access bearer setup procedure is performed to confirm whether a session state satisfies a session quality of service (QoS) demand.

12. The routing method for the packet switched service as claimed in claim 10, wherein the setting address provided by the FAP is one of a plurality of configuration addresses that is appointed as the setting address and assigned to the UE.

13. The routing method for the packet switched service as claimed in claim 10, wherein the setting address provided by the FAP is a private Internet protocol (IP) address or a static address required by the UE that is generated by the FAP and assigned to the UE.

14. The routing method for the packet switched service as claimed in claim 10, wherein a method for providing the setting address by the FAP comprises:

transferring the activate PDP context request message to the mobile core network, and the mobile core network generating and transmitting back the activate PDP context accept message, wherein the activate PDP context accept message comprises a PDP address; and

transmitting the activate PDP context accept message to the UE by the FAP, and mapping the PDP address to a FAP address for storage,

wherein when the UE sends the packet switching data according to the PDP address in order to obtain the packet switched service, the FAP obtains the mapped FAP address according to the PDP address, and modifies a source address of the packet switching data from the PDP address to the FAP address, and directly conducts the packet switched service with the packet switched service supply end through the broadband IP network, and regarding a replied packet switching data directly transmitted back by the packet switched service supply end through the broadband IP network, the FAP modifies a destination address thereof to the PDP address, and transmits it to the UE.

15. The routing method for the packet switched service as claimed in claim 14, wherein a method for generating the activate PDP context accept message by the mobile core network comprises:

transmitting the activate PDP context request message to a serving general packet radio service (GPRS) support node (SGSN);

generating and transmitting back a PDP context by a gateway GPRS support node (GGSN) according to a request of the SGSN; and

transmitting the activate PDP context accept message to the FAP by the SGSN according to the PDP context

16. The routing method for the packet switched service as claimed in claim 15, further comprising executing a radio access bearer setup procedure to establish a session QoS between the UE, the FAP and the mobile core network.

17. The routing method for the packet switched service as claimed in claim 9, wherein the UE and the FAP are connected through a standard mobile communication access protocol.

18. A Femto AP (FAP), suitable for a wireless communication system including a mobile core network, a broadband IP network, and a user equipment (UE), wherein the broadband IP network is connected to the mobile core network and a packet switched service supply end, and the UE is connected to the mobile core network through the FAP and the broadband IP network, the FAP comprises a storage medium storing a session management application software module, wherein the session management application software module is used for executing a routing method for a packet switched service, which comprising:

sending a request message according to a request procedure when the UE performs a packet switched service request;

evaluating the request message and correspondingly replying an accept message to the UE, wherein the accept message comprises a setting address; and

conducting the packet switched service with the packet switched service supply end through the broadband IP network when a packet switching data that is sent by the UE according to the setting address in order to obtain the packet switched service is received.

19. The FAP as claimed in claim 18, wherein the request procedure comprises an activate packet data protocol (PDP) context request message and an activate PDP context accept message.

20. The FAP as claimed in claim 19, wherein after the activate PDP context request message is evaluated and before the activate PDP context accept message is replied to the UE, a radio access bearer setup procedure is performed to confirm whether a session state satisfies a session quality of service (QoS) demand.

21. The FAP as claimed in claim 19, wherein the provided setting address is one of a plurality of IP addresses assigned by the broadband IP network that is appointed as the setting address and assigned to the UE.

22. The FAP as claimed in claim 19, wherein the provided setting address is a private IP address or a static address required by the UE that is generated and assigned to the UE.

23. The FAP as claimed in claim 19, wherein a method for providing the setting address comprises:

transferring the activate PDP context request message to the mobile core network, and the mobile core network generating and transmitting back the activate PDP context accept message, wherein the activate PDP context accept message comprises a PDP address;

transmitting the activate PDP context accept message to the UE, and mapping the PDP address to a FAP address for storage; and

obtaining the mapped FAP address according to the PDP address when the UE sends the packet switching data according to the PDP address in order to obtain the packet switched service, modifying a source address of the packet switching data from the PDP address to the FAP address, and directly conducting the packet switched service with the packet switched service supply end through the broadband IP network;

regarding a replied packet switching data directly transmitted back by the packet switched service supply end through the broadband IP network, modifying a destination address thereof to the PDP address, and transmitting it to the UE.

24. The FAP as claimed in claim 23, wherein the PDP address is an IP address.

25. The FAP as claimed in claim 19, wherein a method for generating the activate PDP context accept message comprises:

transmitting the activate PDP context request message to a serving general packet radio service (GPRS) support node (SGSN);

generating and transmitting back a PDP context by a gateway GPRS support node (GGSN) according to a request of the SGSN; and

transmitting back the activate PDP context accept message by the SGSN according to the PDP context.

26. The FAP as claimed in claim 25, further comprising executing a radio access bearer setup procedure to establish a session QoS between the UE and the mobile core network.

27. The FAP as claimed in claim 19, wherein the activate PDP context request message is a PDP context request message in a universal mobile telecommunication system (UMTS), and the activate PDP context accept message is a PDP context accept message in the UMTS.

28. The FAP as claimed in claim 19, wherein the PDP context is an EPS bearer under a system architecture evolution (SAE) mode.

29. A storage medium, for storing a session management application software module, and applied in a Femto AP for executing a routing method for a packet switched service, the Femto AP being suitable for a wireless communication system including a mobile core network, a broadband IP network, and a user equipment (UE), wherein the broadband IP network is connected to the mobile core network and a packet switched service supply end, and the UE is connected to the mobile core network through the FAP and the broadband IP network, the routing method for the packet switched service that is executed by the session management application software module comprising:

sending a request message according to a request procedure when the UE performs a packet switched service request;

evaluating the request message and correspondingly replying an accept message to the UE, wherein the accept message comprises a setting address; and

conducting the packet switched service with the packet switched service supply end through the broadband IP network when a packet switching data that is sent by the UE according to the setting address in order to obtain the packet switched service is received.