User equipment (UE) transmit power control for dual subscription dual active (DSDA) operations

Patent metadata

Field	Value
Publication number	US-11375461-B1
Application number	US-202117219636-A
Country	US
Kind code	B1
Filing date	Mar 31, 2021
Priority date	Mar 31, 2021
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

Aspects of the disclosure relate to a method of wireless communication at a user equipment (UE), including determining that future or past simultaneous first and second signal transmissions by first and second transceivers pursuant to a dual subscription dual active (DSDA) mode of operation may exceed or has exceeded a maximum allowed transmit power, respectively; and performing at least one operation to reduce an occurrence, likelihood or frequency of the future simultaneous first and second signal transmissions exceeding the maximum allowed transmit power in the DSDA mode of operation, respectively.

First claim

What is claimed is:

1. A method of wireless communication at a user equipment (UE), comprising:
determining that future or past simultaneous first and second signal transmissions by first and second transceivers pursuant to a dual subscription dual active (DSDA) mode of operation may exceed or has exceeded a maximum allowed transmit power, respectively; and
performing at least one operation to reduce an occurrence, likelihood or frequency of the future simultaneous first and second signal transmissions exceeding the maximum allowed transmit power in the DSDA mode of operation, respectively, wherein the at least one operation comprises selecting a cell among a set of available cells, wherein selecting the cell is based on the cell specifying a first maximum transmit power level for the future first signal transmission less than one or more other maximum transmit power levels specified by the unselected one or more cells of the set, respectively.

2. The method of claim 1 , wherein performing the at least one operation comprises setting first and second transmit power levels for the future simultaneous first and second signal transmissions by the first and second transceivers in the DSDA mode of operation, respectively, wherein a sum of the first and second transmit power levels does not exceed the maximum allowed transmit power.

3. The method of claim 2 , wherein the first transmit power level is higher than the second transmit power level.

4. The method of claim 2 , wherein the first transmit power level is higher than the second transmit power level due to the future first signal transmission having a higher priority than the future second signal transmission.

5. The method of claim 4 , wherein the first transmit power level corresponds to a specified power level for the future first signal transmission, and wherein the second transmit power level is related to the maximum allowed transmit power minus the specified power level.

6. The method of claim 4 , wherein the future first signal transmission relates to an emergency signal transmission.

7. The method of claim 4 , wherein the future first signal transmission relates to a cellular-vehicle signal transmission, and the future second signal transmission relates to a vehicle occupant user device signal transmission.

8. The method of claim 4 , wherein the future first signal transmission relates to a cellular-vehicle operation signal transmission, and the future second signal transmission relates to a data or voice signal transmission.

9. The method of claim 1 , wherein the at least one operation further comprises specifying a second maximum transmit power level for the future second signal transmission related to the maximum allowed transmit power minus the first maximum transmit power level.

10. The method of claim 1 , wherein the selected cell employs time division duplex (TDD) uplink and downlink signal transmissions, and wherein one or more other of the set of available cells employ frequency division duplex (FDD) uplink and downlink signal transmissions.

11. The method of claim 1 , wherein selecting the cell among the set of available cells is performed in either connected or idle mode.

12. The method of claim 1 , wherein the at least one operation comprises sending a first message to a network to assist in reducing the occurrence, likelihood or frequency of the future simultaneous first and second signal transmissions exceeding the maximum allowed transmit power in the DSDA mode of operation, respectively.

13. The method of claim 12 , wherein the at least one operation further comprises receiving a second message from the network in response to the first message, the second message providing instruction to reduce a transmission rate associated with future signal transmissions by the first and/or second transceivers, respectively.

14. The method of claim 12 , wherein the first message identifies one or more time intervals of scheduled future first and second simultaneous signal transmissions, and wherein the at least one operation further comprises receiving a second message from the network in response to the first message to reschedule the first and second signal transmissions by the first and second transceivers, respectively.

15. The method of claim 12 , wherein the at least one operation further comprises receiving a second message from the network in response to the first message, the second message providing instruction to operate in single uplink (UL) operations mode.

16. The method of claim 1 , wherein the maximum allowed transmit power is related to a power class of the UE.

17. A user equipment (UE) within a wireless communication network, comprising:
a first transceiver;
a second transceiver;
a memory; and
a processor communicatively coupled to the first and second transceivers and the memory, wherein the processor and the memory are configured to:
determine that future or past simultaneous first and second signal transmissions by the first and second transceivers pursuant to a dual subscription dual active (DSDA) mode of operation may exceed or has exceeded a maximum allowed transmit power, respectively; and
perform at least one operation to reduce an occurrence, likelihood or frequency of the future simultaneous first and second signal transmissions exceeding the maximum allowed transmit power in the DSDA mode of operation, respectively, wherein the at least one operation comprises selecting a cell among a set of available cells, wherein selecting the cell is based on the cell specifying a first maximum transmit power level for the future first signal transmission less than one or more other maximum transmit power levels specified by the unselected one or more cells of the set, respectively.

18. The UE of claim 17 , wherein the at least one operation comprises setting first and second transmit power levels for the future simultaneous first and second signal transmissions by the first and second transceivers in the DSDA mode of operation, respectively, wherein a sum of the first and second transmit power levels does not exceed the maximum allowed transmit power.

19. The UE of claim 18 , wherein the first transmit power level is higher than the second transmit power level due to the future first signal transmission having a higher priority than the future second signal transmission.

20. The UE of claim 17 , wherein the selected cell employs time division duplex (TDD) uplink and downlink signal transmissions, and wherein one or more other of the set of available cells employ frequency division duplex (FDD) uplink and downlink signal transmissions.

21. The UE of claim 17 , wherein the at least one operation comprises sending a first message to a network to assist in reducing the occurrence, likelihood or frequency of the future simultaneous first and second signal transmissions exceeding the maximum allowed transmit power in the DSDA mode of operation, respectively.

22. The UE of claim 21 , wherein the at least one operation further comprises receiving a second message from the network in response to the first message, the second message providing instruction to reduce a transmission rate associated with future signal transmissions by the first and/or second transceivers, respectively.

23. The UE of claim 21 , wherein the first message identifies one or more time intervals of scheduled future first and second simultaneous signal transmissions, and wherein the at least one operation further comprises

Assignees

• Qualcomm Inc

Inventors

• Kumar Akash

Classifications

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04W52/281

  taking into account user or data type priority · CPC title

• H04W52/221

  using past power control commands · CPC title

• H04W4/80

  Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication · CPC title

• H04W52/367 Primary

  Power values between minimum and maximum limits, e.g. dynamic range · CPC title