Interference mitigation during simultaneous operation of multiple radios in a wireless device

Patent metadata

Field	Value
Publication number	US-10201000-B2
Application number	US-201715402935-A
Country	US
Kind code	B2
Filing date	Jan 10, 2017
Priority date	Jan 11, 2016
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

Disclosed are apparatus and methods of adaptive frequency channel allocation adjustment to mitigate the in-device interference of simultaneous coexistence operation of multiple radio frequency operation. At least one of channel conflict tables is pre-defined in the device memory. One of the multiple radio frequency operation is prioritized, and the mobile device would request the cellular base transceiver station or the host access point to allocate a non-conflicted frequency channel with respect to the prioritized radio frequency channel. Once the prioritized communication channel changes due to handover or any other reason, the device would check the allocated channels against the pre-defined conflict channel tables and request the access point or the base station to adjust the secondary frequency channel if there exists the conflict channel.

First claim

What is claimed is what is disclosed and illustrated, including:

1. A wireless communication method implemented in a mobile device, comprising:
receiving, via a network interface, initial frequency channel allocations for use by the mobile device in future simultaneous wireless communications;
determining, prior to performing wireless transmissions using the initial frequency channel allocations, whether the initial frequency allocations are in a conflict condition because operation using the initial frequency allocations will cause in-device radio frequency interference when receptions and/or transmissions are simultaneously performed;
selecting for reallocation, when the initial frequency allocations are conflicting, based on usage priorities currently associated with the wireless connections, a first initial frequency channel allocation from the initial frequency channel allocations having a lower priority than other frequency allocations from the initial frequency channel allocations; and
obtaining, via the network interface, a reallocation of the first initial frequency allocation to a new frequency allocation, thereby eliminating the conflict condition.

2. The method of claim 1 , wherein the initial frequency channel allocations are for two frequency bands used in a carrier aggregation setting.

3. The method of claim 1 , wherein the determining whether the initial frequency allocations are in the conflict condition includes checking whether the initial frequency allocations are stored as being conflicting in a local memory.

4. The method of claim 1 , wherein the usage priority is a fixed, pre-determined priority that is based on protocols used by the wireless connections.

5. The method of claim 1 , wherein the usage priority is based on identities of applications that are requesting the receptions and/or transmissions.

6. The method of claim 1 , further including, when the usage priorities change, re-checking for the conflict condition; and
when a conflict condition exits, requesting a reallocation to change a frequency band used for the wireless communication.

7. The method of claim 1 , further including:
performing channel aggregation using the initial frequency channel allocation wherein transmission and/or reception bandwidth of two non-contiguous frequency bands is combined to provide a higher bandwidth physical layer connection to the wireless device.

8. The method of claim 1 , wherein the obtaining the reallocation includes iteratively receiving frequency band reallocations and checking whether the conflicting condition is eliminated.

9. A computer program product storing instructions, when executed, causing a processor to implement a method in a mobile device, the instructions comprising:
instructions for receiving, via a network interface, initial frequency channel allocations for use by the mobile device in future simultaneous wireless communications;
instructions for determining, prior to performing wireless transmissions using the initial frequency channel allocations, whether the initial frequency allocations are in a conflict condition because operation using the initial frequency allocations will cause in-device radio frequency interference when receptions and/or transmissions are simultaneously performed;
instructions for selecting for reallocation, when the initial frequency allocations are conflicting, based on usage priorities currently associated with the wireless connections, a first initial frequency channel allocation from the initial frequency channel allocations having a lower priority than other frequency allocations from the initial frequency channel allocations; and
instructions for obtaining, via the network interface, a reallocation of the first initial frequency allocation to a new frequency allocation, thereby eliminating the conflict condition.

10. The computer program product of claim 9 , wherein the initial frequency channel allocations are for two frequency bands used in a carrier aggregation setting.

11. The computer program product of claim 9 , wherein the instructions for determining whether the initial frequency allocations are in the conflict condition include instructions for checking whether the initial frequency allocations are stored as being conflicting in a local memory.

12. The computer program product of claim 9 , wherein the usage priority is a fixed, pre-determined priority that is based on protocols used by the wireless connections.

13. The computer program product of claim 9 , wherein the usage priority is based on identities of applications that are requesting the receptions and/or transmissions.

14. The computer program product of claim 9 , wherein the instructions further include, instructions for, when the usage priorities change, re-checking for the conflict condition; and
instructions for, when a conflict condition exits, requesting a reallocation to change a frequency band used for the wireless communication.

15. The computer program product of claim 9 , wherein the instructions further include:
instructions for performing channel aggregation using the initial frequency channel allocation wherein transmission and/or reception bandwidth of two non-contiguous frequency bands is combined to provide a higher bandwidth physical layer connection to the wireless device.

16. The computer program product of claim 9 , wherein the instructions for obtaining the reallocation include instructions for iteratively receiving frequency band reallocations and checking whether the conflicting condition is eliminated.

Assignees

• Zte Corp
• Zte Canada Inc

Inventors

• Cheng Dajun
• Jiang Tao
• Zhang Hongwei

Classifications

• H04W72/541 Primary

  using the level of interference · CPC title

• H04W72/0453

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

• H04W76/16

  Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer · CPC title

• H04W72/082 Primary

  Electricity · mapped topic

• H04B1/525 Primary

  with means for reducing leakage of transmitter signal into the receiver · CPC title