Method and apparatus to facilitate support for multi-radio coexistence

• US 9,282,462 B2
• Filed: 01/10/2011
• Issued: 03/08/2016
• Est. Priority Date: 03/31/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Dayal, Pranav, Kadous, Tamer A., Mantravadi, Ashok, Wang, Jibing, Prakash, Rajat
• Primary Examiner(s): Bilodeau, David
• Application Number:
  US13/004,006
• Publication Number:
  US 20120020229A1
• Time in Patent Office: 1,884 Days
• Field of Search: 455/41.2
• US Class Current: 1/1
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• 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

A method of wireless communication includes receiving signaling from a served User Equipment (UE), via a radio access technology, indicating an interfering technology associated with coexistence issues experienced by the served UE. The method also includes calculating future subframes expected to experience coexistence issues based on previous subframes estimated to have experienced coexistence issues.

Claims

1. A method of wireless communication, comprising:

receiving signaling from a served User Equipment (UE), via a first radio access technology (RAT), indicating an interfering technology of a second RAT used by the served UE and associated with in-device coexistence issues with the first RAT experienced by the served UE, the signaling from the served UE not indicating which events of the first RAT were denied by the served UE due to the coexistence issues;

in response to receiving the signaling from the served UE, estimating which of the events of the first RAT have been denied by the served UE due to the coexistence issues, the estimated events having been those denied by the served UE in arbitration between a first RAT radio and a second RAT radio of the served UE, the arbitration having allowed the second RAT radio to transmit or receive on the second RAT while forcing the first RAT radio to stop transmitting an uplink communications subframe or receiving a downlink communications subframe of the first RAT; and

calculating future subframes of the first RAT expected to experience the in-device coexistence issues with the interfering technology of the second RAT at the served UE based on a periodicity of the previous subframes of the first RAT estimated to have been denied by the served UE.

2. The method of claim 1, in which the estimating of which events of the first RAT have been denied comprises measuring energy of uplink communications on the first RAT received from the served UE to estimate which previous subframes of the first RAT experienced the coexistence issues with the interfering technology of the second RAT.

3. The method of claim 1, in which the estimating of which events of the first RAT have been denied comprises estimating which previous subframes of the first RAT experienced the coexistence issues based on when no acknowledgment or a negative acknowledgment was received from the served UE for previous subframes of the first RAT that had been sent to the served UE in downlink communications.

4. The method of claim 1, in which the signaling indicating the interfering technology indicates a Bluetooth configuration.

5. The method of claim 1, further comprising scheduling the served UE around the calculated future subframes, to mitigate the coexistence issues experienced by the served UE.

6. A system operable in a wireless communication system, the system comprising:

means for receiving signaling from a served User Equipment (UE), via a first radio access technology (RAT), indicating an interfering technology of a second RAT used by the served UE and associated with in-device coexistence issues between the first RAT and a second RAT experienced by the served UE;

means for estimating which events of the first RAT have been denied by the served UE due to the coexistence issues in response to the means for receiving signaling receiving signaling from the served UE, the signaling indicating the interfering technology of the second RAT but not indicating which events of the first RAT were denied due to the coexistence issues, the estimated events having been those denied by the served UE in arbitration between a first RAT radio and a second RAT radio of the served UE, the arbitration having allowed the second RAT radio to transmit or receive on the second RAT while forcing the first RAT radio to stop transmitting an uplink communications subframe or receiving a downlink communications subframe of the first RAT; and

means for calculating future subframes of the first RAT expected to experience the in-device coexistence issues with the interfering technology of the second RAT at the served UE based on a periodicity of the previous subframes of the first RAT estimated by means for estimating to have been denied by the served UE.

7. The system of claim 6 in which the means for estimating estimates which events of the first RAT have been denied based on energy of uplink communications on the first RAT received from the served UE, using the energy to estimate which previous subframes of the first RAT experienced the coexistence issues with the interfering technology of the second RAT.

8. The system of claim 6, in which the estimating estimates which events of the first RAT have been denied of the first RAT experienced the coexistence issues based on when no acknowledgment or a negative acknowledgment was received from the served UE for previous subframes of the first RAT that had been sent to the served UE in downlink communications.

9. The system of claim 6, in which the signaling to be received by the means for receiving signaling indicates that the interfering technology of the second RAT is a Bluetooth configuration, and the means for calculating calculates the future subframes of the first RAT expected to experience the coexistence issues with the Bluetooth configuration at the served UE.

10. The system of claim 6, further comprising means for scheduling the served UE, around the calculated future subframes, to mitigate the coexistence issues experienced by the served UE.

11. An apparatus for wireless communication, comprising:

a memory; and

at least one processor coupled to the memory, the at least one processor being configured;

to receive signaling from a served User Equipment (UE), via a first radio access technology (RAT), indicating an interfering technology of a second RAT used by the served UE and associated with in-device coexistence issues between the first RAT and the second RAT experienced by the served UE;

to estimate which events of the first RAT have been denied by the served UE due to the coexistence issues in response to receiving the signaling, from the served UE via the first RAT, the signaling indicating the interfering technology of the second RAT but not indicating which events of the first RAT were denied due to the coexistence issues, the estimated events having been those denied by the served UE in arbitration between a first RAT radio and a second RAT radio of the served UE, the arbitration having allowed the second RAT radio to transmit or receive on the second RAT while forcing the first RAT radio to stop transmitting an uplink communications subframe or receiving a downlink communications subframe of the first RAT; and

to calculate future subframes of the first RAT expected to experience the in-device coexistence issues with the interfering technology of the second RAT at the served UE based on a periodicity of the previous subframes of the first RAT estimated to have been denied by the served UE.

12. The apparatus of claim 11, in which the processor is further configured to estimate which events of the first RAT have been denied by measuring energy of uplink communications on the first RAT received from the served UE to estimate which previous subframes of the first RAT experienced the coexistence issues with the interfering technology of the second RAT.

13. The apparatus of claim 11, in which the processor is further configured to estimate which events of the first RAT have been denied by estimating which previous subframes of the first RAT experienced the coexistence issues based on when no acknowledgment or a negative acknowledgment was received from the served UE for previous subframes of the first RAT that had been sent to the served UE in downlink communications.

14. The apparatus of claim 11, in which the received signaling indicates that the interfering technology is a Bluetooth configuration, and the processor is configured to calculate the future subframes of the first RAT expected to experience the coexistence issues with the Bluetooth configuration at the served UE.

15. The apparatus of claim 11, in which the processor is further configured to schedule the served UE, around the calculated future subframes, to mitigate the coexistence issues experienced by the served UE.

16. A computer program product for wireless communications in a wireless network, comprising:

a non-transitory computer-readable medium having program code recorded thereon, the program code comprising;

program code to receive signaling from a served User Equipment (UE), via a first radio access technology (RAT), indicating an interfering technology of a second RAT used by the served UE and associated with in-device coexistence issues with the first RAT experienced by the served UE;

program code to estimate which events of the first RAT have been denied by the served UE due to the coexistence issues in response to receiving the signaling, from the served UE via the first RAT, the signaling indicating the interfering technology of the second RAT but not indicating which events of the first RAT were denied due to the coexistence issues, the estimated events having been those denied by the served UE in arbitration between a first RAT radio and a second RAT radio of the served UE, the arbitration having allowed the second RAT radio to transmit or receive on the second RAT while forcing the first RAT radio to stop transmitting an uplink communications subframe or receiving a downlink communications subframe of the first RAT; and

program code to calculate future subframes of the first RAT expected to the experience in-device coexistence issues with the interfering technology of the second RAT at the served UE based on a periodicity of the previous subframes of the first RAT estimated to have been denied by the served UE.