Wireless architecture in support of voice and data communications

• US 8,855,058 B2
• Filed: 10/01/2013
• Issued: 10/07/2014
• Est. Priority Date: 10/12/2007
• Status: Active Grant

• Current Assignee: Bison Patent Licensing, LLC
• Original Assignee: Ruckus Wireless, Inc. (CommScope Holding Company, Inc.)
• Inventors: Lim, Heeseon, Kant, Nishi
• Primary Examiner(s): Ly, Any-Vu
• Application Number:
  US14/043,760
• Publication Number:
  US 20140029519A1
• Time in Patent Office: 371 Days
• Field of Search: None
• US Class Current: 370/328
• CPC Class Codes: H04L 65/1026 at the edge
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 84/105 PBS [Private Base Station] network H04W84/12 - H04W84/16 take precedence
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

A wireless access network including a wireless base station configured to, for Iu-CS voice traffic, act as a network controller, by, terminating Iu-b signals from user equipment, and relaying the voice traffic over Iu-CS via an IP sec tunnel. And for data traffic, wireless base station is configured to act as the network controller, by, terminating Iu-b signals from the user equipment, striping IP payload, and sending the data traffic inside IPsec. Further, the wireless access network includes a wireless gateway configured to act as a security gateway for Iu-CS voice traffic, by, establishing the IP sec tunnel with the femtocell base station without the support of a GPRS Tunneling Protocol (GTP) as defined over Iu-PS. Also receiving and forwarding the tunneled Iu-CS voice traffic to a mobile switching center, and for data traffic, encapsulate the IP payload and send it via Gn to GGSN.

Claims

1. A method for operating a wireless access network, comprising:

via a wireless base station,

for Iu-CS voice traffic, acting as a network controller, by,

terminating Iu-b signals from user equipment; and

relaying the voice traffic over Iu-CS via an IP sec tunnel; and

for data traffic, acting as the network controller, by,

terminating Iu-b signals from the user equipment;

striping IP payload; and

sending the data traffic inside IPsec; and

via a wireless gateway,

for Iu-CS voice traffic, acting as a security gateway, by,

establishing the IP sec tunnel with the wireless base station without the support of a GPRS Tunneling Protocol (GTP) as defined over Iu-PS; and

receiving and forwarding the tunneled Iu-CS voice traffic to a mobile switching center; and

for data traffic, acting as a security gateway, by,

encapsulating the IP payload and send it via Gn to GGSN.

2. The method of claim 1, wherein the wireless base station further, handles voice traffic from a user equipment the same way as 3G voice services and without CC to SIP translation function.

3. The method of claim 1, wherein the wireless base station further terminates Uu radio interface signaling from the user equipment and strips IP payload to be sent to the gateway directly inside a IPsec, instead of encapsulating it inside a lu-PS and sending it inside IPsec.

4. The method of claim 1, wherein the wireless gateway further routes the IP payload from the wireless base station directly to a destination public data network without encapsulation.

5. The method of claim 1 wherein, the wireless gateway further routes traffic without encapsulating it over Gn to a destination public data network when working in packet data gateway mode.

6. A radio access network, comprising:

a wireless gateway; and

a wireless base station configured to,

communicate with at least one user equipment without any modifications to support Wi-Fi at the user equipment;

communicate with the wireless gateway;

send IP data payloads to the wireless gateway inside a secure tunnel without encapsulation;

the wireless gateway, configured to,

establish the secure tunnel with the wireless base station;

act as a security gateway for Iu-CS voice traffic.

7. The network of claim 6, wherein the wireless gateway includes TTG (tunnel terminating gateway) functionality to route the IP data payloads to GGSN.

8. The network of claim 6, wherein the wireless base station is further configured to strip IP payload to be sent to the wireless gateway directly inside an IPsec, instead of encapsulating it inside a lu-PS and sending it inside IPsec.

9. A method for data communication in wireless access network comprising,

establishing a secure tunnel IPsec between a wireless base station and a wireless security gateway;

transmitting, via the wireless base station, Iu-CS traffic inside the tunnel to the wireless security gateway,

forwarding, via the wireless security gateway, the Iu-CS traffic to a mobile switching center; and

terminating, via the wireless base station, radio interface signal from user equipment;

relaying payload from the radio signal over Iu-PS by,

extracting an IP payload;

re-encapsulating the IP payload into GTP-U; and

sending the IP payload over Iu-PS via the tunnel, to the wireless gateway.

10. The method of claim 9, wherein the wireless security gateway, upon receipt of the IP payload, is configured to work in Tunnel Terminating Gateway mode and encapsulate the payload to send over Gn interface to GGSN.

11. The method of claim 9, wherein the wireless security gateway, upon receipt of said IP payload, is configured to work in Packet Data Gateway mode and route the payload directly to destination public data network without encapsulation.

12. A method of managing a radio access network, comprising:

transmitting at least one data payload directly over IPsec, between a femtocell base station and a wireless gateway,

wherein the transmitting is without the support of GTP as defined over lu-ps; and

handling control traffic in substantially the same way as data traffic via the femtocell base station.

13. The method of claim 12, further comprising,

routing the payload to GGSN, via the wireless gateway,

wherein the wireless gateway is configured to use TTG (tunnel terminating gateway) functionality.

14. The method of claim 12, further comprising,

relaying, via the femtocell base station, voice traffic from a user equipment over a Iu-CS interface to the wireless gateway.

15. The method of claim 12, further comprising,

handling, via the femtocell base station, voice traffic from a user equipment the same way as 3G voice services and without CC to SIP translation function.

16. The method of claim 12, further comprising,

forwarding, via the wireless gateway, lu-CS traffic from the femtocell base station to a Mobile Switching Center.

17. The method of claim 12, further comprising,

via the femtocell base station,

terminating Uu radio interface signaling from a wireless handset;

and

stripping IP payload to be sent to the gateway directly inside a IPsec, instead of encapsulating it inside a lu-PS and sending it inside IPsec.

18. The method of claim 12, further comprising,

via the wireless gateway,

receiving an IP payload from the femtocell base station;

and

encapsulating the payload to send a Gn interface to a GGSN.

19. The method of claim 12, further comprising,

via the wireless gateway,

routing an IP payload from the femtocell base station directly to a destination public data network without encapsulation.