Techniques for assisting radio access technology (RAT) communications using another RAT

• US 9,820,325 B2
• Filed: 09/18/2015
• Issued: 11/14/2017
• Est. Priority Date: 04/02/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gubeskys, Arthur, Touboul, Assaf, Barak, Oz, Cohen, Raphael
• Primary Examiner(s): Wu, Jianye
• Application Number:
  US14/859,127
• Publication Number:
  US 20160295629A1
• Time in Patent Office: 788 Days
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04W 56/0005 synchronizing of arrival of multiple uplinks
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• 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 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Systems and methods for communicating in a wireless network using a first radio access technology (RAT) and an assisting RAT are disclosed. A first connection can be established with an access point using the first RAT, and a second connection can be established with the access point using the assisting RAT. A timing of the first connection can be synchronized based at least in part on a timeline of the assisting RAT. Communications with the access point over at least the first connection can be based at least in part on the synchronized timing.

Claims

1. A method for communicating in a wireless network using a first radio access technology (RAT) and an assisting RAT, comprising:

establishing a first connection with an access point using the first RAT;

establishing a second connection with the access point using the assisting RAT;

synchronizing a timing of the first connection based at least in part on a timeline of the assisting RAT;

communicating with the access point over at least the first connection based at least in part on the synchronizing the timing; and

receiving, from the access point over the second connection using the assisting RAT and after synchronizing the timing of the first connection, a scheduling grant for the first connection.

2. The method of claim 1, wherein the synchronizing the timing comprises aligning a packet start time for the first RAT over the first connection to a symbol time of the assisting RAT over the second connection according to the timeline of the assisting RAT.

3. The method of claim 1, wherein the synchronizing the timing comprises aligning a packet start time for the first RAT over the first connection to a transmission time interval (TTI) of the assisting RAT over the second connection according to the timeline of the assisting RAT.

4. The method of claim 1, further comprising receiving a communication pattern for the first connection, wherein the communication pattern is based on the synchronizing the timing.

5. The method of claim 4, wherein the communication pattern for the first connection indicates whether subframes in a radio frame are to be configured for downlink or uplink communications.

6. The method of claim 1, wherein the receiving the scheduling grant comprises receiving the scheduling grant over a control channel of the assisting RAT over the second connection.

7. The method of claim 1, wherein the scheduling grant includes one or more preamble fields related to the first RAT for processing data received over the first connection.

8. The method of claim 1, further comprising transmitting, to the access point over the second connection, a grant request for resources of the first connection, wherein the receiving the scheduling grant is in response to the grant request.

9. The method of claim 1, wherein the first RAT is a wireless local area network (WLAN) RAT and the assisting RAT is a cellular technology RAT.

10. An apparatus for communicating in a wireless network using a first radio access technology (RAT) and an assisting RAT, comprising:

a first RAT radio configured to establish a first connection with an access point using the first RAT;

an assisting RAT radio configured to establish a second connection with the access point using the assisting RAT;

a memory component; and

at least one processor coupled to the memory component, the at least one processor and the memory component configured to synchronize a timing of the first connection based at least in part on a timeline of the assisting RAT,

wherein the first RAT radio is configured to communicate with the access point over at least the first connection based at least in part on synchronizing the timing, and

wherein the assisting RAT radio is configured to receive, from the access point over the second connection using the assisting RAT and after synchronizing of the timing of the first connection, a scheduling grant for the first connection.

11. The apparatus of claim 10, wherein the at least one processor and the memory component are configured to synchronize the timing at least in part by aligning a packet start time for the first RAT over the first connection to a symbol time of the assisting RAT over the second connection according to the timeline of the assisting RAT.

12. The apparatus of claim 10, wherein the at least one processor and the memory component are configured to synchronize the timing at least in part by aligning a packet start time for the first RAT over the first connection to a transmission time interval (TTI) of the assisting RAT over the second connection according to the timeline of the assisting RAT.

13. The apparatus of claim 10, wherein the at least one processor and the memory component are further configured to receive a communication pattern for the first connection, wherein the communication pattern is based on synchronizing the timing.

14. The apparatus of claim 10, wherein the at least one processor and the memory component are configured to receive the scheduling grant over a control channel of the assisting RAT over the second connection.

15. The apparatus of claim 10, wherein the scheduling grant includes one or more preamble fields related to the first RAT for processing data received over the first connection.

16. The apparatus of claim 10, wherein the at least one processor and the memory component are further configured to transmit, to the access point over the second connection, a grant request for resources of the first connection, and wherein the at least one processor and the memory component are configured to receive the scheduling grant in response to the grant request.

17. A non-transitory computer-readable storage medium comprising computer-executable code for communicating in a wireless network using a first radio access technology (RAT) and an assisting RAT, the code comprising:

code for establishing a first connection with an access point using the first RAT;

code for establishing a second connection with the access point using the assisting RAT;

code for synchronizing a timing of the first connection based at least in part on a timeline of the assisting RAT;

code for communicating with the access point over at least the first connection based at least in part on synchronizing the timing; and

code for receiving, from the access point over the second connection using the assisting RAT and after synchronizing the timing of the first connection, a scheduling grant for the first connection.

18. The non-transitory computer-readable storage medium of claim 17, wherein the code for synchronizing synchronizes the timing at least in part by aligning a packet start time for the first RAT over the first connection to at least one of a symbol time of the assisting RAT or a transmission time interval (TTI) of assisting RAT over the second connection according to the timeline of the assisting RAT.

19. The non-transitory computer-readable storage medium of claim 17, the code further comprising code for receiving a communication pattern for the first connection, wherein the communication pattern is based on the synchronizing the timing.

20. The non-transitory computer-readable storage medium of claim 19, wherein the communication pattern for the first connection indicates whether subframes in a radio frame are to be configured for downlink or uplink communications.