IP Library › Granted Patent US 10,721,665
Granted Patent B2
US 10,721,665 · App. 15/909,988 · Granted Jul 21, 2020

Systems and methods for establishing and maintaining multiple cellular connections and/or interfaces

Inventors: Murali Reddiboyana (Karnataka, IN); John L. Tomici (Southold, NY); Prabhakar R. Chitrapu (Blue Bell, PA); Alexander Reznik (Pennington, NJ)
Assignee: InterDigital Patent Holdings, Inc.
H04W36/14H04W76/15H04W36/0027H04W76/22
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Quick Facts
Patent No.
US 10,721,665
App. No.
15/909,988
Granted
Jul 21, 2020
Kind
B2
Abstract

Systems and methods for providing multiple connections or interfaces at the same time may be disclosed herein. For example, in an embodiment, a first RRC connection may be established between a wireless transmit and receive unit (WTRU) or user equipment (UE) and a network node such as an eNB and a second RRC connection may be established between the WTRU or UE and the network node such as the eNB or another network node such as another eNB. The first RRC connection and the second RRC connections may then be maintained in parallel (e.g. at the same time).

Claims (47)

1. A method for providing multiple connections, comprising:

establishing, by a core network device, a first logical connection with a first network node, the first logical connection corresponding to a wireless transmit and receive unit;

establishing, by the core network device, a second logical connection with a second network node, the second logical connection corresponding to the wireless transmit and receive unit, the core network device maintaining the first and second logical connections in parallel;

communicating, by the core network device, data directed to the wireless transmit and receive unit simultaneously via the first logical connection and via the second logical connection; and

receiving, by the core network device, data from the wireless transmit and receive unit simultaneously via the first logical connection and the second logical connection.

2. The method of claim 1 , wherein the second network node is the same network node as the first network node.

3. The method of claim 1 , wherein the first network node is a first eNB and the second network node is a second eNB.

4. The method of claim 2 , further comprising:

establishing, by the core network device, a first bearer between the core network device and the wireless transmit and receive unit via the first network node; and

establishing, by the core network device, a second bearer between the core network device and the wireless transmit and receive unit via the second network node.

5. The method of claim 4 , wherein the core network establishes the second bearer via the second network node using signaling via the first network node.

6. The method of claim 5 , wherein the second bearer is modified using signaling via the first network node.

7. The method of claim 4 , further comprising:

receiving, by the core network device, a message indicating that a first RRC connection has been established between the wireless transmit and receive unit and the first network node; and

receiving, by the core network device, a message indicating that the second RRC connection has been established between the wireless transmit and receive unit and the second network node.

8. The method of claim 7 ,

wherein the first RRC connection is associated with the first bearer and the second RRC connection is associated with a second bearer, and

wherein the first and second bearers are independent of each other.

9. The method of claim 7 , further comprising:

moving the first bearer associated with the first RRC connection to the second RRC connection.

10. The method of claim 7 , further comprising:

moving at least a portion of an IP flow from the first RRC connection to the second RRC connection.

11. The method of claim 7 , further comprising:

receiving, by the core network device, a request to attach, the request to attach being received after receiving the message indicating the first RRC connection and the second RRC have been attached.

12. A core network device for providing multiple connections, comprising:

a processor configured to:

establish a first logical connection with a first network node, the first logical connection corresponding to a wireless transmit and receive unit;

establish a second logical connection with a second network node, the second logical connection corresponding to the wireless transmit and receive unit, the core network device maintaining the first and second logical connections in parallel;

communicate data directed to the wireless transmit and receive unit simultaneously via the first logical connection and via the second logical connection; and

receive data from the wireless transmit and receive unit simultaneously via the first logical connection and the second logical connection.

13. The core network device of claim 12 , wherein the second network node is the same network node as the first network node.

14. The core network device of claim 12 , wherein the first network node is a first eNB and the second network node is a second eNB.

15. The core network device of claim 12 , wherein the processor is further configured to:

establish a first bearer between the core network device and the wireless transmit and receive unit via the first network node; and

establish a second bearer between the core network device and the wireless transmit and receive unit via the second network node.

16. The core network device of claim 15 , wherein the core network establishes the second bearer via the second network node using signaling via the first network node.

17. The core network device of claim 15 , wherein the processor is further configured to:

modify the second bearer using signaling via the first network node.

18. A method for providing multiple connections, comprising:

establishing, by a core network device, a first logical connection with a first network node, the first logical connection corresponding to a wireless transmit and receive unit;

establishing, by the core network device, a first bearer between the core network device and the wireless transmit and receive unit via the first network node;

establishing, by the core network device, a second logical connection with a second network node, the second logical connection corresponding to the wireless transmit and receive unit, the core network device maintaining the first and second logical connections in parallel;

establishing, by the core network device, a second bearer between the core network device and the wireless transmit and receive unit via the second network node;

communicating, by the core network device, data directed to the wireless transmit and receive unit simultaneously via the first logical connection and via the second logical connection; and

receiving, by the core network device, data from the wireless transmit and receive unit simultaneously via the first logical connection and the second logical connection.

19. The method of claim 18 , wherein the second network node is the same network node as the first network node.

20. The method of claim 18 , wherein the first network node is a first eNB and the second network node is a second eNB.

Continuity (3)
Continuation 14232195
Provisional Application 61506635 · Jul 11, 2011
Related Publication 20180368038A1 · Dec 20, 2018
Cited By (1)
US 12,301,669