Moving ad hoc network small cell relay handover

• US 9,351,229 B2
• Filed: 12/19/2013
• Issued: 05/24/2016
• Est. Priority Date: 12/19/2013
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Hans, Martin, Schmidt, Andreas, Bienas, Maik, Faerber, Michael, Cordeiro, Carlos, Niu, Huaning, Zong, Pingping, Li, Qian
• Primary Examiner(s): Eng, George
• Assistant Examiner(s): Ahsan, Umair
• Application Number:
  US14/135,315
• Publication Number:
  US 20150181502A1
• Time in Patent Office: 887 Days
• Field of Search: 455/422.1, 455436-444, 455450-4522, 455/550.1, 455/561, 370331-333
• US Class Current: 1/1
• CPC Class Codes: B61L 27/70 Details of trackside communication
• CPC Class Codes: H04W 36/0009 for a plurality of users or terminals, e.g. group communication or moving wireless networks user group management H04W4/08; processing of subscriber group data H04W8/186
• CPC Class Codes: H04W 36/0016 Hand-off preparation specially adapted for end-to-end data sessions
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 36/32 by location or mobility data, e.g. speed data
• CPC Class Codes: H04W 40/026 Route selection considering the moving speed of individual devices
• CPC Class Codes: H04W 40/22 using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• CPC Class Codes: H04W 84/005 Moving wireless networks
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

A mobile small station including a transceiver, a processor, and a memory having instructions for execution by the processor to exchange measurement information with a macro station, provide a wide area network connection and act as a relay for a small station moving network with the mobile small station, and perform handover of relay responsibilities to another mobile small station in the small station moving network.

Claims

1. A mobile small station comprising:

a transceiver;

a processor; and

a memory having instructions for execution by the processor to;

provide a wide area network connection and act as a relay for a small station moving network of member mobile small stations, the member mobile small stations including the mobile small station and other mobile small stations;

exchange measurement information with a macro station and the other mobile small stations in the small station moving network, the measurement information exchanged with the other mobile small stations including signal strength to the macro station of the mobile small station and the other mobile small stations;

compare exchanged signal strength measurement information over time to determine a collective speed and direction of the mobile small station moving network members and a precedence order for the small station moving network members, the precedence order being the order in which the mobile small station moving network members are moving;

identify a subset of small station moving network members that have precedence ordering, speed, and direction compatible with shared use of the wide area network connection, the precedence ordering, speed, and direction determined from the exchanged signal strength measurement information; and

perform handover of relay responsibilities to a second mobile small station in the subset of small station moving network members, the second mobile small station selected based on the precedence ordering.

2. The mobile small station of claim 1 wherein the handover of relay responsibilities is performed before signal degradation adversely affects the relay.

3. The mobile small station of claim 1 wherein the instructions further cause the processor to:

detect a potential necessity to perform a handover; and

define an optimum point in time for the handover.

4. The mobile small station of claim 3 wherein the optimum point in time for the handover is defined as a point in time when a signal from a current relay is decreasing while a signal from a potential new relay is increasing, and such signals are equal and providing an acceptable quality of service, a potential new relay being a member of the subset of small station moving network members.

5. The mobile small station of claim 1 wherein the instruction further cause the processor to page the second mobile small station via the small station moving network to obtain information about resources available in the second mobile small station usable to shorten radio resource control (RRC) connection setup when the second mobile small station acts as a new relay for the small station moving network.

6. The mobile small station of claim 1 wherein the mobile small station is coupled to the small station moving network via a wire.

7. The mobile small station of claim 1 wherein the mobile small station is coupled to the small station moving network wirelessly.

8. A method performed by a mobile small station, the method comprising:

providing a wide area network connection and acting as a relay for a small station moving network of member mobile small stations, the member mobile small stations including the mobile small station and other mobile small stations;

exchanging measurement information with a macro station and the other mobile small stations in the small station moving network, the measurement information exchanged with the other mobile small stations including signal strength to the macro station of the mobile small station and the other mobile small stations;

comparing exchanged signal strength measurement information over time to determine a collective speed and direction of the mobile small station moving network members and a precedence order for the small station moving network members, the precedence order being the order in which the mobile small station moving network members are moving;

identifying a subset of small station moving network members that have precedence ordering, speed, and direction compatible with shared use of the wide area network connection, the precedence ordering, speed, and direction determined from the exchanged signal strength measurement information; and

performing a handover of relay responsibilities to a second mobile small station in the subset of small station moving network, the second mobile small station selected based on the precedence ordering.

9. The method of claim 8 wherein the handover of relay responsibilities is performed before signal degradation adversely affects the relay.

10. The method of claim 8 and further comprising:

detecting a potential necessity to perform a handover; and

defining an optimum point in time for the handover, wherein the optimum point in time for the handover is defined as a point in time when a signal from a current relay is decreasing while a signal from a potential new relay is increasing, and such signals are approximately equal and providing an acceptable quality of service.

11. The method of claim 8 further comprising paging the second mobile small station via the small station moving network to obtain information about resources available in the second mobile small station usable to shorten radio resource control (RRC) connection setup when the second mobile small station acts as a new relay for the small station moving network.

12. At least one non-transitory machine readable medium including instructions that, when executed by a machine, configure the machine to:

provide a wide area network connection and acting as a relay for a small station moving network of member mobile small stations, the member mobile small stations including the mobile small station and other mobile small stations;

exchange measurement information with a macro station and the other mobile small stations in the small station moving network, the measurement information exchanged with the other mobile small stations including signal strength to the macro station of the mobile small station and the other mobile small stations;

compare exchanged signal strength measurement information over time to determine a collective speed and direction of the mobile small station moving network members and a precedence order for the small station moving network members, the precedence order being the order in which the mobile small station moving network members are moving;

identify a subset of small station moving network members that have precedence ordering, speed, and direction compatible with shared use of the wide area network connection, the precedence ordering, speed, and direction determined from the exchanged signal strength measurement information; and

perform a handover of relay responsibilities to a second mobile small station in the subset of small station moving network, the second mobile small station selected based on the precedence ordering.

13. The at least one machine readable medium of claim 12 wherein the instructions configure the machine to perform handover of relay responsibilities before signal degradation adversely affects the relay.

14. The at least one machine readable medium of claim 12 wherein the instructions configure the machine to:

detect a potential necessity to perform a handover; and

define an optimum point in time for the handover, wherein the optimum point in time for the handover is defined as a point in time when a signal from a current relay is decreasing while a signal from a potential new relay is increasing, and such signals are approximately equal and providing a an acceptable quality of service.

15. The at least one machine readable medium of claim 12 wherein the instructions configure the machine to page the second mobile small station via the small station moving network to obtain information about resources available in the second mobile small station usable to shorten radio resource control (RRC) connection setup when the second mobile small station acts as a new relay for the small station moving network.