Communication path switching for mobile devices

• US 9,369,912 B2
• Filed: 02/11/2015
• Issued: 06/14/2016
• Est. Priority Date: 08/03/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Stojanovski, Alexandre S., Kowalewski, Frank, Venkatachalam, Muthaiah
• Primary Examiner(s): Wong, Warner
• Application Number:
  US14/620,089
• Publication Number:
  US 20150156702A1
• Time in Patent Office: 489 Days
• Field of Search: 370277-278, 370/282, 370310-350
• US Class Current: 1/1
• CPC Class Codes: H04B 17/27 for locating or positioning the transmitter
• CPC Class Codes: H04L 1/0013 Rate matching, e.g. puncturing or repetition of code symbols
• CPC Class Codes: H04L 41/0659 by isolating or reconfiguring faulty entities
• CPC Class Codes: H04L 41/082 the condition being updates or upgrades of network functionality
• CPC Class Codes: H04L 41/0836 to enhance reliability, e.g. reduce downtime
• CPC Class Codes: H04L 43/0811 by checking connectivity
• CPC Class Codes: H04L 45/306 Route determination based on the nature of the carried application
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04L 67/75 Indicating network or usage conditions on the user display
• CPC Class Codes: H04N 21/23439 for generating different versions
• CPC Class Codes: H04N 21/25825 involving client display capabilities, e.g. screen resolution of a mobile phone optimising the visualisation of content during browsing in the Internet G06F16/9577; processing of terminal status or physical abilities in wireless networks H04W8/22; authentication in wireless network security H04W12/06
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 36/142 over the same radio air interface technology
• CPC Class Codes: H04W 4/02 : Services making use of location information
• CPC Class Codes: H04W 4/70 : Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 40/20 : based on geographic position or location
• CPC Class Codes: H04W 40/246 : Connectivity information discovery
• CPC Class Codes: H04W 48/14 : using user query or user detection
• CPC Class Codes: H04W 48/18 : Selecting a network or a communication service
• CPC Class Codes: H04W 52/00 : Power management, e.g. TPC [Transmission Power Control], power saving or power classes gain control in transmitters or power amplifiers H03G3/3042
• CPC Class Codes: H04W 52/0209 : in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0212 : managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 52/0216 : using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 : where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0258 : controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
• CPC Class Codes: H04W 76/10 : Connection setup
• CPC Class Codes: H04W 76/11 : Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• CPC Class Codes: H04W 76/15 : Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/16 : Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/06 : adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Methods, systems, and devices for switching internet protocol (IP) flows from a first communication path to a second communication path are disclosed herein. A user equipment (UE) may include an exchange component, a session component, and a communication component. The exchange component exchanges second communication path availability information between the UE and another UE by sending and receiving session initiation protocol (SIP) messages that include second communication path availability information over the first communication path. The session component changes the communication session by re-routing traffic flows to the second communication path based on the exchanged second path availability information. The communication component sends to and receives from the other UE data corresponding to an IP flow over the second communication path.

Claims

1. User equipment (UE) comprising:

logic, at least a portion of which comprises circuitry, to;

exchange second communication path availability information between the UE and another UE, wherein the exchange is to send and receive session initiation protocol (SIP) messages comprising the second communication path availability information over a first communication path;

change a communication session by re-routing traffic flows to the second communication path based on the second communication path availability information;

in response to changing the communication session, send to and receive from the other UE data corresponding to a first traffic flow over the second communication path, wherein the first traffic flow comprises an existing traffic flow and wherein the data of the existing traffic flow is switched from the first communication path to the second communication path;

in response to determining that the UE is outside a proximity services (ProSe) communication path range of the other UE, initiate re-routing of traffic flows back to the first communication path.

2. The UE of claim 1, wherein the logic is further to send and receive the SIP messages over an evolved packet core (EPC) communication path.

3. The UE of claim 1, wherein the second communication path availability information comprises an internet protocol (IP) address for use over the second communication path.

4. The UE of claim 1, wherein the logic is further to send and receive from the other UE data corresponding to a second traffic flow over the first communication path, wherein the first traffic flow comprises video media packets and the second traffic flow comprises voice media packets.

5. The UE of claim 1, wherein the first communication path comprises an evolved packet core (EPC) communication path and the second communication path comprises a ProSe communication path.

6. The UE of claim 1, wherein the UE communicates with the other UE over the first communication path through an internet protocol (IP) multimedia system (IMS) via a first evolved packet system (EPS) and the other UE is configured to communicate through the IMS via a second EPS.

7. The UE of claim 6, wherein the first EPS and the second EPS are separately owned.

8. The UE of claim 1, wherein the logic is further to send and receive SIP messages comprising one or more first SIP messages, the first SIP messages comprising the second communication path availability information.

9. The UE of claim 1, wherein the logic is further to initiate re-routing of traffic flows over the second communication path by sending a SIP INVITE message via the first communication path.

10. The UE of claim 1, wherein the logic is further to change the communication session by re-routing traffic flows to the second communication path by receiving a SIP INVITE message and sending a SIP OK message via the first communication path.

11. The UE of claim 1, wherein the logic is further to change the communication session by re-routing traffic flows to the second communication path by receiving a SIP OK message and sending a SIP ACK message via the first communication path.

12. The UE of claim 1, wherein to initiate the re-routing of traffic flows back to the first communication path, the logic is further configured to send a SIP INVITE message via the first communication path, wherein the first communication path comprises an evolved packet core (EPC) communication path and the second communication path comprises a ProSe communication path.

13. The UE of claim 1, further comprising a first antenna for communication over an evolved packet core (EPC) communication path and a second antenna for communication over a ProSe communication path.

14. A mobile terminal configured to:

receive a message over an infrastructure communication path comprising an evolved node B (eNB) and an internet protocol multimedia system (IMS), the message comprising direct path availability information for a nearby mobile terminal; and

switch communication of one or more traffic flows to a direct communication path based on the direct path availability information, wherein data corresponding to the one or more traffic flows is switched from being communicated over the infrastructure communication path to being communicated over the direct communication path, wherein the one or more traffic flows comprise an existing traffic flow, wherein the data of the existing traffic flow is switched from the first communication path to the second communication path, and wherein switching the one or more traffic flows to the direct communication path comprises substantially simultaneously switching to a direct path address for the mobile terminal and a direct path address for the nearby mobile terminal for the one or more traffic flows.

15. The mobile terminal of claim 14, wherein the direct path availability information of the SIP message comprises an internet protocol (IP) address of the nearby mobile terminal.

16. The mobile terminal of claim 14, wherein the mobile terminal is further configured to determine that the direct communication path will utilize an IP subnet disjoint from the infrastructure communication path based on the SIP message.

17. The mobile terminal of claim 16, further comprising obtaining an IP address for the mobile terminal corresponding to the disjoint IP subnet.

18. The mobile terminal of claim 14, wherein prior to switching communication of the one or more traffic flows the mobile terminal and the nearby mobile terminal are engaged in communication of the one or more traffic flows and a second traffic flow over the infrastructure communication path, and wherein in response to switching communication the one or more traffic flows are communicated via the direct communication path and the second traffic flow continues to be communicated via the infrastructure communication path.

19. At least one non-transitory computer-readable storage medium having stored thereon instructions that, when executed by a processor, cause the processor to perform operations comprising:

determining that a first user equipment (UE) is in sufficient proximity to a second UE for communication over a direct communication path, the first UE and the second UE engaged in internet protocol (IP) multimedia subsystem (IMS) communication over an infrastructure communication path;

informing the second UE of the availability of a direct communication path; and

re-routing traffic flows from the infrastructure communication path to the direct communication path while maintaining IMS service continuity, wherein the traffic flows comprise an existing traffic flow, wherein the data of the existing traffic flow is switched from the first communication path to the second communication path, wherein the first UE sends to and receives from the second UE data corresponding to a second traffic flow over the first communication path, wherein the existing traffic flow comprises video media packets, and wherein the second traffic flow comprises voice media packets.

20. The at least one non-transitory computer-readable storage medium of claim 19, wherein re-routing comprises re-routing the traffic flows to be communicated over a Wi-Fi direct communication path.

21. The at least one non-transitory computer-readable storage medium of claim 19, wherein re-routing comprises re-routing the traffic flows to be communicated over a long term evolution (LTE) direct communication path.