Method and apparatus for handover between content servers for transmission path optimization

• US 9,794,843 B2
• Filed: 03/20/2015
• Issued: 10/17/2017
• Est. Priority Date: 03/24/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Jin-Sung, Kweon, Ki-Suk, Park, Jung-Shin
• Primary Examiner(s): Ghulamali, Qutbuddin
• Application Number:
  US14/664,140
• Publication Number:
  US 20150271725A1
• Time in Patent Office: 942 Days
• Field of Search: 455436
• CPC Class Codes: H04L 67/148 Migration or transfer of sessions
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04W 36/0005 Control or signalling for completing the hand-off
• CPC Class Codes: H04W 36/0033 with transfer of context information
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 36/32 by location or mobility data, e.g. speed data
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method of an electronic device in a wireless communication system is provided. The method includes receiving, by the electronic device, a service through a first content server, performing, by the electronic device, handover from a serving Base Station (BS) to a target BS, and continuously receiving the service through a second content server closest to the electronic device.

Claims

1. A method for operating an electronic device in a wireless communication system, the method comprising:

receiving, from a first content server, a first part of content up to a resuming point of the content via a source base station (BS) by using an internet protocol (IP) address of the first content server;

performing a handover from the source BS to a target BS; and

receiving, from a second content server, a second part of the content from the resuming point of the content via the target BS based on information for a session between the electronic device and the first content server, the information indicating the resuming point of the content,

wherein the second part of the content is transmitted via the target BS by using the IP address of the first content server, and

wherein the information is transmitted from the first content server to the second content server.

2. The method of claim 1, wherein the second part of the content is transmitted via a new session between the second content server and the electronic device, and

wherein the new session is generated based on the information for the session comprising the IP address of the first content server, to resume downloading of the content.

3. The method of claim 1, wherein the first content server receives a request for providing the information for the session to the second content server, and

wherein the information for the session comprises a value indicating the resuming point of the content, an identifier of the content, the IP address of the first content server, and an IP address of the electronic device.

4. The method of claim 1, wherein the second part of the content via the target BS is transmitted to the electronic device by using network address translation (NAT) between the second content server and the target BS.

5. The method of claim 1, wherein the second part of the content via the target BS is transmitted by using tunneling between the second content server and either the target BS or the electronic device.

6. The method of claim 1, wherein the second part of the content via the target BS is transmitted by using a multi-path transmission control protocol and an IP address of the second content server.

7. The method of claim 1, further comprising:

receiving, from a domain name system server, information indicating the second content server which is adjacent to the electronic device after the handover.

8. An apparatus of an electronic device in a wireless communication system, the apparatus comprising:

at least one transceiver; and

at least one processor operatively coupled to the at least one transceiver,

wherein the at least one processor;

receives, from a content server, a first part of content up to a resuming point of the content via a source base station (BS) by using an internet protocol (IP) address of the first content server;

performs a handover from the source BS to a target BS; and

receives, from a second content server, a second part of the content from the resuming point of the content via the target BS based on information for a session between the electronic device and the first content server, the information indicating the resuming point of the content,

wherein the second part of the content is transmitted via the target BS by using the IP address of the first content server, and

wherein the information is transmitted from the first content server to the second content server.

9. The apparatus of claim 8, wherein the second part of the content is transmitted via a new session between the second content server and the electronic device, and

wherein the new session is generated based on the information for the session comprising the IP address of the first content server, to resume downloading of the content.

10. The apparatus of claim 8, wherein the first content server receives a request for providing the information for the session to the second content server, and

wherein the information for the session comprises a value indicating the resuming point of the content, an identifier of the content, the IP address of the first content server, and an IP address of the electronic device.

11. The apparatus of claim 8, wherein the second part of the content via the target BS is transmitted to the electronic device by using network address translation (NAT) between the second content server and the target BS.

12. The apparatus of claim 8, wherein the second part of the content via the target BS is transmitted by using tunneling between the second content server and either the target BS or the electronic device.

13. The apparatus of claim 8, wherein the second part of the content via the target BS is transmitted by using a multi-path transmission control protocol and an IP address of the second content server.

14. The apparatus of claim 8, wherein the at least one processor further receives, from a domain name system server, information indicating the second content server which is adjacent to the electronic device after the handover.