Managing interference between collocated radios

Patent metadata

Field	Value
Publication number	US-9832779-B2
Application number	US-201514924616-A
Country	US
Kind code	B2
Filing date	Oct 27, 2015
Priority date	May 20, 2013
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A device implementing a system for managing interference between collocated radios may include a first radio module, a collocated second radio module, and a host processor. The first radio module may be configured to generate a collocated radio tolerance indicator that indicates a tolerance of the first radio module to interference caused by the collocated second radio module when the collocated second radio module is transmitting, and provide the collocated radio tolerance indicator to a host processor when a second collocated radio module is transmitting. The host processor may be configured to control the second radio module based at least in part on the collocated radio tolerance indicator.

First claim

What is claimed is:

1. A device comprising:
a first radio circuit configured to generate a collocated radio tolerance indicator based at least in part on a link margin associated with a first link of the first radio circuit and provide the collocated radio tolerance indicator to a host processor when a collocated second radio circuit is transmitting, the collocated radio tolerance indicator indicating a tolerance of the first radio circuit to interference caused by the collocated second radio circuit when the collocated second radio circuit is transmitting, wherein the collocated radio tolerance indicator is mapped to one of a plurality of actions that are performed by the host processor with respect to the collocated second radio circuit upon receipt of the collocated radio tolerance indicator;
the second radio circuit; and
the host processor, wherein the host processor is configured to control the second radio circuit based at least in part on the one of the plurality of actions mapped to the collocated radio tolerance indicator, wherein the plurality of actions comprise performing a circuit switched fall back with respect to the collocated second radio circuit, coordinating a channel change with respect to the second radio circuit, coordinating a reduction in transmission power of the collocated second radio circuit, or enabling a time division multiplexing coexistence algorithm with respect to the first radio circuit and the collocated second radio circuit.

2. The device of claim 1 , wherein the first radio circuit is configured to generate the collocated radio tolerance indicator based at least in part on a quality of service associated with the first link of the first radio circuit and the link margin associated with the first link of the first radio circuit.

3. The device of claim 1 , wherein the one of the plurality of actions comprises performing the circuit switched fall back with respect to the collocated second radio circuit.

4. The device of claim 1 , wherein the one of the plurality of actions comprises coordinating the channel change with respect to the second radio circuit.

5. The device of claim 1 , wherein the one of the plurality of actions comprises coordinating the reduction in transmission power of the collocated second radio circuit.

6. The device of claim 1 , wherein the one of the plurality of actions comprises enabling the time division multiplexing coexistence algorithm with respect to the first radio circuit and the collocated second radio circuit.

7. The device of claim 1 , wherein the first radio circuit comprises at least one of a Bluetooth radio circuit or a Wi-Fi radio circuit and the second radio circuit comprises a long term evolution (LTE) radio circuit.

8. A method for managing interference between collocated radios, the method comprising:
determining, by a first radio circuit, a first link quality metric for each of a plurality of channels associated with a first link when a collocated second radio circuit is not transmitting;
determining, by the first radio circuit, a first link margin associated with the first link of the first radio circuit based at least in part on the first link quality metric of each of the plurality of channels associated with the first link;
generating, by the first radio circuit when the collocated second radio circuit is determined to be transmitting, a collocated radio tolerance indicator based at least in part on a variation in the first link margin associated with the first link, wherein the collocated radio tolerance indicator indicates a tolerance of the first radio circuit to the transmitting by the collocated second radio circuit; and
providing, by the first radio circuit, the collocated radio tolerance indicator to a host controller when the collocated second radio circuit is determined to be transmitting.

9. The method of claim 8 , wherein the plurality of channels comprise a plurality of frequencies of a frequency-hopping spread spectrum being utilized by the first radio circuit for frequency-hopping.

10. The method of claim 9 , wherein generating, by the first radio circuit when the collocated second radio circuit is determined to be transmitting, the collocated radio tolerance indicator based at least in part on the variation in the first link margin associated with the first link further comprises:
generating, by the first radio circuit when the collocated second radio circuit is determined to be transmitting, the collocated radio tolerance indicator based at least in part on the variation in the first link margin associated with the first link and a number of the plurality of frequencies of the frequency-hopping spread spectrum that are available for frequency hopping.

11. The method of claim 8 , further comprising:
determining, by the first radio circuit, a second link quality metric of each of the plurality of channels associated with the first link while the collocated second radio circuit is determined to be transmitting; and
determining, by the first radio circuit, the variation in the first link margin associated with the first link of the first radio circuit by comparing the first link quality metric of each of the plurality of channels associated with the first link to the second link quality metric of each of the plurality of channels associated with the first link.

12. The method of claim 8 , wherein generating, by the first radio circuit when the collocated second radio circuit is determined to be transmitting, the collocated radio tolerance indicator based at least in part on the variation in the first link margin associated with the first link comprises:
generating, by the first radio circuit when the collocated second radio circuit is determined to be transmitting, the collocated radio tolerance indicator based at least in part on the variation in the first link margin associated with the first link and a quality of service associated with the first link.

13. The method of claim 12 , further comprising:
determining, by the first radio circuit, a second link margin associated with a second link of the first radio circuit when the collocated second radio circuit is not transmitting, wherein the collocated radio tolerance indicator is based at least in part on the quality of service associated with the first link, the variation in the first link margin associated with the first link, or a variation in the second link margin associated with the second link when the collocated second radio circuit is determined to be transmitting.

14. The method of claim 8 , wherein the collocated radio tolerance indicator is mapped to one of a plurality of actions to be performed by the host controller with respect to the collocated second radio circuit, the plurality of actions comprising at least one of performing a circuit switched fall back with respect to the collocated second radio circuit, coordinating a channel change with respect to the second radio circuit, coordinating a reduction in transmission power of the collocated second radio circuit, or enabling a time division multiplexing coexistence algorithm with respect to the first radio circuit and the collocated second radio circuit.

15. The method of claim 8 , wherein the collocated radio tolerance indicator indicates the tolerance of the first radio circuit to the transmitting by the collocated second radio circuit on a first frequency while the first radio circuit is receiving on a second frequency that neighbors the first frequency.

16. A computer program product comprising instructions stored in a tangible computer-readable storage medium, the instructions compri

Assignees

• Broadcom Corp
• Avago Technologies General Ip

Inventors

• Desai Prasanna
• Mak Siukai

Classifications

• H04W72/541 Primary

  using the level of interference · CPC title

• H04L5/0073

  Allocation arrangements that take into account other cell interferences · CPC title

• H04W72/082 Primary

  Electricity · mapped topic

• H04L1/0017

  where the mode-switching is based on Quality of Service requirement · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title