Methods, systems and apparatus for mitigating wireless connection degradation due to wireless charging

Patent metadata

Field	Value
Publication number	US-10673541-B2
Application number	US-201715612539-A
Country	US
Kind code	B2
Filing date	Jun 2, 2017
Priority date	Jun 2, 2017
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

Methods, systems and apparatus for a user equipment to mitigate interference in a wireless charging state. The user equipment may determine when the user equipment enters a wireless charging state and, when the user equipment enters the wireless charging state, activate an interference mitigation. The user equipment may further determine when the UE exits the wireless charging state and, when the user equipment exits the wireless charging state, deactivate the interference mitigation.

First claim

The invention claimed is:

1. A method, comprising:
at a user equipment (“UE”);
determining that the UE is in a wireless charging state;
in response to determining that the UE is in the wireless charging state, activating an interference mitigation, the interference mitigation comprising altering at least one parameter of an operation associated with a layer of a protocol stack for a cellular network connection of the UE;
determining that the UE exits the wireless charging state; and
in response to determining that the UE exits the wireless charging state, deactivating the interference mitigation, wherein the deactivating the interference mitigation comprises restoring the at least one parameter from a wireless charging state value to a wireless non-charging state value.

2. The method of claim 1 , wherein the activating of the interference mitigation is further based on whether the UE is connected to a cellular network.

3. The method of claim 1 , wherein the at least one parameter includes at least one of an access barring factor, a cell selection criteria, an out of service (“OOS”) recovery scan rate, a duration of an onDuration of a discontinuous reception (“DRX”) cycle, an amount of physical broadcasting channel (“PBCH”) decoding attempts, a threshold of a panic search and measurement state, a search and measurement window duration, a ceiling of a maximum transmission power limit of the UE, a search length duration or a threshold triggering advanced receiver functions.

4. The method of claim 3 , wherein the operation is related to an establishment failure, a connected state radio link failure (“RLF”) or a system information block (“SIB”) decode failure.

5. The method of claim 1 , wherein the interference mitigation comprises one of deactivating a motion sensor based searching, deactivating a broadcast control channel (“BCCH”) read early timeout, deactivating UMTS cell avoidance, deactivating a micro-sleep function, deactivating a physical downlink control channel Only (“PDCCH-Only”) mode, deactivating a limiting of scheduling requests, deactivating a limiting of channel quality index (“CQI”) carryover, deactivating a limiting of uplink hybrid automatic repeat (“HARQ”) requests, deactivating an optimization of a downlink carrier aggregation (“DL-CA”) small cell measurement, deactivating a frame early termination (“FET”) for a paging channel (“PCH”) or a paging indicator channel (“PICH”) or enabling one or more additional diversity antennas.

6. The method of claim 1 , wherein the interference mitigation comprises performing one of a type of quick scan, a fast mode measurement or a fingerprint function, wherein the type of quick scan includes one of a better system reselection (BSR) scan, a force better system scan, a most recently used (MRU) scan or a sector level sweep (SLS) scan.

7. The method of claim 1 , further comprising:
in response to the UE exiting the wireless charging state, activating a further interference mitigation.

8. The method of claim 7 , wherein the further interference mitigation includes one of a type of quick scan, a removing of a throttling timer, or a high priority public land mobile network (“HP-PLMN”) scan, wherein the type of quick scan includes one of a better system reselection (BSR) scan, a force better system scan, a most recently used (MRU) scan or a sector level sweep (SLS) scan.

9. The method of claim 1 , wherein the interference mitigation comprises removing one of a radio access technology (“RAT”), a cell or a frequency from a deprioritized list.

10. The method of claim 1 , further comprising:
determining a level of interference at the UE;
determining the level of interference is above a predefined threshold; and
in response to determining the level of interference is above the predefined threshold, initiating a further interference mitigation.

11. A user equipment (“UE”), comprising:
a transceiver configured to connect to a base station of a network; and
a processor configured to:
determine that the UE is in a wireless charging state; and
in response to determining that the UE is in the wireless charging state, activate an interference mitigation, the interference mitigation comprising altering at least one parameter of an operation associated with a layer of a protocol stack for a cellular network connection;
determine that the UE exits the wireless charging state; and
in response to determining that the UE exits the wireless charging state, deactivating the interference mitigation, wherein the deactivating the interference mitigation comprises restoring the at least one parameter from a wireless charging state value to a wireless non-charging state value.

12. The UE of claim 11 , wherein the processor is further configured to:
determine when the UE exits the wireless charging state; and
deactivate the interference mitigation when it is determined that the UE exited the wireless charging state.

13. The UE of claim 12 , wherein when the UE exits the wireless charging state, the processor is further configured to activate a further interference mitigation, the further mitigation includes one of a type of quick scan, a removing of a throttling timer, or a high priority public land mobile network (“HP-PLMN”) scan, wherein the type of quick scan includes one of a better system reselection (BSR) scan, a force better system scan, a most recently used (MRU) scan or a sector level sweep (SLS) scan.

14. The UE of claim 11 , wherein the processor is further configured to activate the interference mitigation based on whether the UE is connected to a cellular network.

15. The UE of claim 11 , wherein the at least one parameter comprises at least one of an access barring factor, a cell selection criteria, an out of service (“OOS”) recovery scan rate, a duration of an onDuration of a discontinuous reception (“DRX”) cycle, an amount of physical broadcasting channel (“PBCH”) decoding attempts, a threshold of a panic search and measurement state, a search and measurement window duration, a ceiling of a maximum transmission power limit of the UE, a search length duration or a threshold triggering advanced receiver functions.

16. The UE of claim 11 , wherein the interference mitigation comprises one of deactivating a motion sensor based searching, deactivating a broadcast control channel (“BCCH”) read early timeout, deactivating UMTS cell avoidance, deactivating a micro-sleep function, deactivating a physical downlink control channel Only (“PDCCH-Only”) mode, deactivating a limiting of scheduling requests, deactivating a limiting of channel quality index (“CQI”) carryover, deactivating a limiting of uplink hybrid automatic repeat (“HARQ”) requests, deactivating an optimization of a downlink carrier aggregation (“DL-CA”) small cell measurement, deactivating a frame early termination (“PET”) for a paging channel (“PCH”) or a paging indicator channel (“PICH”) or enabling one or more additional diversity antennas.

17. The UE of claim 11 , wherein the interference mitigation comprises performing one of a type of quick scan, a fast mode measurement or a fingerprint function, wherein the type of quick scan includes one of a better system reselection (BSR) scan, a force better system scan, a most recently used (MRU) scan or a sector level sweep (SLS) scan.

18. The UE of claim 11 , wherein the interference mitigation comprises removing one of a radio access technology (“RAT”), a cell or a frequency from a deprioritized list.

19. An integrated circuit, comprising:
circuitry configured to determine when a user equipm

Assignees

• Apple Inc

Inventors

• Nimmala Srinivasan
• Gurumoorthy Sethuraman
• Venkataraman Vijay
• Ramamurthi Vijay Kumar
• Lovlekar Srirang A
• Kavuri Lakshmi N
• Baek Sang Ho
• Zhu Yifan
• Anantharaman Karthik
• Nallandigal Rangakrishna
• Kodali Sree Ram
• Kumar Adesh
• Wang Xin
• Al-Shemali Eyad
• Jing Xiangpeng
• Ganesan Sivaramachandran
• Xing Longda
• Shi Jianxiong
• Almalfouh Sami M
• Ji Zhu
• Sebeni Johnson O
• Wang Beibei
• Arora Sunny

Classifications

• H04B5/0037

  Electricity · mapped topic

• H04B1/10 Primary

  Means associated with receiver for limiting or suppressing noise or interference · CPC title

• H04B5/0075

  Electricity · mapped topic

• H04B15/02 Primary

  Reducing interference from electric apparatus by means located at or near the interfering apparatus · CPC title

• H02J50/70

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title