Granted Patent B2

US 12,232,055 · App. 17/441,354 · Granted Feb 18, 2025

Inventors: Haitong Sun (Cupertino, CA); Dawei Zhang (Saratoga, CA); Fangli Xu (Beijing, CN); Haijing Hu (Los Gatos, CA); Jie Cui (San Jose, CA); Wei Zeng (Saratoga, CA); Yang Tang (San Jose, CA); Yushu Zhang (Beijing, CN)

Assignee: Apple Inc.

H04W52/42H04W52/288

Abstract

Claims (46)

1. A user equipment (UE), comprising:

a memory that stores at least one full power transmission mode capability of the UE;

a transceiver configured to transmit and receive information with a communications network; and

one or more processors configured to:

cause the transceiver to transmit a capabilities message to the communications network, the capabilities message indicating whether the UE supports each of four different full power transmission modes;

receive a configuration message from the communications network via the transceiver;

determine a selected full power transmission mode from the configuration message; and

configure the transceiver according to the selected full power transmission mode from among the four different full power transmission modes,

wherein the four different full power transmission modes include a mode in which power scaling is set equal to a ratio between a number of non-zero power ports of a configured transmitted precoder matrix indicator (TPMI) and a maximum number of ports of the UE.

2. The UE of claim 1 , wherein the configuration message is a PUSCH-Config message.

3. The UE of claim 1 , wherein the transceiver includes a plurality of logical ports, and

wherein the memory further stores a number of the plurality of logical ports and a coherency capability of the UE.

4. The UE of claim 3 , wherein the capabilities message includes the number of the plurality of logical ports and the coherency capability of the UE.

5. The UE of claim 3 , wherein the number of the plurality of logical ports is 2, and the coherency capability includes full coherent, and

wherein the four different full power transmission modes include at least one of Mode 0 or Mode 2, Mode 2 setting some transmitted precoder matrix indicators (TPMIs) to power scaling 1 and other TPMIs to a different power scaling value.

6. The UE of claim 3 , wherein the number of the plurality of logical ports is 4, and the coherency capability includes full coherent, and

wherein the four different full power transmission modes include at least one of Mode 0 or Mode 2, Mode 2 setting some transmitted precoder matrix indicators (TPMIs) to have power scaling 1 and other TPMIs to a different power scaling value.

7. The UE of claim 1 , wherein the four different full power transmission modes further include Mode 0, and

wherein Mode 0 sets all power scaling to 1.

8. A method of setting a full power transmission mode in a user equipment (UE), comprising:

transmitting a capabilities message to a communication network, the capabilities message indicating whether the UE supports each of four different full power transmission modes;

receiving a configuration message from the communication network;

determining a selected full power transmission mode from the configuration message; and

configuring a transceiver according to the selected full power transmission mode from among the four different full power transmission modes,

wherein the four different full power transmission modes include a mode in which power scaling is set equal to a ratio between a number of non-zero power ports of a configured transmitted precoder matrix indicator (TPMI) and a maximum number of ports of the UE.

9. The method of claim 8 , wherein the configuration message is a PUSCH-Config message.

10. The method of claim 8 , further comprising receiving a number of logical ports supported by a transceiver of the UE and a coherency capability of the UE.

11. The method of claim 10 , wherein the capabilities message includes the number of logical ports supported by the transceiver and the coherency capability of the UE.

12. The method of claim 10 , wherein the selected full power transmission mode is one of the four different modes, and is selected based on the capabilities of the UE.

13. The method of claim 12 , wherein the four different full power transmission modes further include a Mode 0 in which all power scaling is set to 1.

14. The UE of claim 1 , wherein the one or more processors are further configured to receive a port selection from the communications network.

15. The UE of claim 14 , wherein the port selection is based on a codebookSubset and capabilities of the UE.

16. The UE of claim 15 , wherein the port selection is based on whether the codebookSubset is nonCoherent or whether the codebookSubset is configured as fullyAndPartialAndNonCoherent.

17. An apparatus, comprising:

a memory that stores at least one full power transmission mode capability of a user equipment (UE); and

one or more processors configured to:

transmit a capabilities message to the communications network, the capabilities message indicating whether the UE supports each of four different full power transmission modes;

receive a configuration message from the communications network via the transceiver; and

determine a selected full power transmission mode from the configuration message,

wherein the four different full power transmission modes include a mode in which power scaling is set equal to a ratio between a number of non-zero power ports of a configured transmitted precoder matrix indicator (TPMI) and a maximum number of ports of the UE.

18. The apparatus of claim 17 , further comprising a transceiver, wherein the one or more processors are further configured to:

cause the transceiver to transmit the capabilities message; and

configure the transceiver according to the selected full power transmission mode.

19. The apparatus of claim 18 , wherein the transceiver includes a plurality of logical ports,

wherein the memory further stores a number of the plurality of logical ports and a coherency capability of the UE, and wherein the capabilities message includes the number of the plurality of logical ports and the coherency capability of the UE.

20. The apparatus of claim 17 , wherein the configuration message is a PUSCH-Config message.

Continuity (1)

References Cited (32)