IP Library Granted Patent US 11,589,316
Granted Patent B2
US 11,589,316 · App. 16/993,813 · Granted Feb 21, 2023

Transmission power adjustment for a transmission of sounding reference signals

Inventors: Hua Zhou (Herndon, VA); Esmael Hejazi Dinan (McLean, VA); Kyungmin Park (Vienna, VA); Hyoungsuk Jeon (Centreville, VA); Alireza Babaei (Fairfax, VA)
Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
H04W52/146H04B7/0617H04L5/001H04L5/005H04L5/0048H04L5/0053H04L5/0098H04W16/32H04W52/228H04W52/325H04W72/042H04W72/046H04W72/0406H04W72/0413H04W74/0833H04W88/08
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Quick Facts
Patent No.
US 11,589,316
App. No.
16/993,813
Granted
Feb 21, 2023
Kind
B2
Abstract

A wireless device receives, from a base station, parameters of a first sounding reference signal (SRS); and a second SRS. A downlink control information triggering transmission of the first SRS is received. A control element activating transmission of the second SRS is received. A transmission power of the second SRS is adjusted based on: the first SRS having higher priority than the second SRS; the first SRS overlapping in time with the second SRS; and a total transmission power exceeding a total allowable power value. The first SRS is transmitted. The second SRS with the adjusted transmission power is transmitted.

Claims (74)

1. A method comprising:

receiving, by a wireless device from a base station, parameters of:

a first sounding reference signal (SRS); and

a second SRS;

receiving a first downlink control information triggering transmission of the first SRS;

receiving a second downlink control information triggering transmission of the second SRS;

adjusting the transmission power of the second SRS based on:

the first SRS having higher priority than the second SRS;

the first SRS overlapping in time with the second SRS; and

a total transmission power exceeding a total allowable power value;

transmitting the first SRS; and

transmitting the second SRS with the adjusted transmission power,

wherein the first SRS is for beam management with a wider beam width and a smaller number of antenna ports,

wherein the second SRS is for Chanel State Information (CSI) acquisition with a narrower beam and a larger number of antenna ports,

wherein a CSI value for performing CSI acquisition is estimated based on the second SRS.

2. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive, by the wireless device from a base station, parameters of:

a first sounding reference signal (SRS); and

a second SRS;

receive a first downlink control information triggering transmission of the first SRS;

receive a second downlink control information triggering transmission of the second SRS;

adjust the transmission power of the second SRS based on:

the first SRS having higher priority than the second SRS;

the first SRS overlapping in time with the second SRS; and

a total transmission power exceeding a total allowable power value;

transmit the first SRS; and

transmit the second SRS with the adjusted transmission power,

wherein the first SRS is for beam management with a wider beam width and a smaller number of antenna ports,

wherein the second SRS is for Chanel State Information (CSI) acquisition with a narrower beam and a larger number of antenna ports,

wherein a CSI value for performing CSI acquisition is estimated based on the second SRS.

3. The method of claim 1 , wherein the parameters indicate the total allowable power value.

4. The method of claim 1 , wherein the parameters are received in a radio resource control message.

5. The method of claim 1 , wherein the first SRS is an aperiodic SRS.

6. The method of claim 1 , wherein the second SRS is a semi-persistent SRS.

7. The method of claim 1 , wherein a control element activating transmission of the second SRS is a semi-persistent SRS activation/deactivation medium access control control element.

8. The method of claim 1 , further comprising:

determining a first initial transmission power of the first SRS; and

determining a second initial transmission power of the second SRS; and

wherein the total transmission power is based on a sum of at least the first initial transmission power and the second initial transmission power.

9. The wireless device of claim 1 , wherein the parameters indicate:

a first SRS resource set for the first SRS; and

a second SRS resource set for the second SRS.

10. The wireless device of claim 2 , wherein the parameters indicate:

a first SRS resource set for the first SRS; and

a second SRS resource set for the second SRS.

11. The wireless device of claim 2 , wherein the parameters indicate the total allowable power value.

12. The wireless device of claim 2 , wherein the parameters are received in a radio resource control message.

13. The wireless device of claim 2 , wherein the first SRS is an aperiodic SRS.

14. The wireless device of claim 2 , wherein the second SRS is a semi-persistent SRS.

15. The wireless device of claim 2 , wherein a control element activating transmission of the second SRS is a semi-persistent SRS activation/deactivation medium access control control element.

16. A system, comprising:

a wireless device comprising:

one or more first processors; and

first memory storing first instructions that, when executed by the one or more first processors of the wireless device, cause the wireless device to:

receive parameters of:

a first sounding reference signal (SRS); and

a second SRS;

receive a first downlink control information triggering transmission of the first SRS;

receive a second downlink control information triggering transmission of the second SRS;

adjust the transmission power of the second SRS based on:

the first SRS having higher priority than the second SRS;

the first SRS overlapping in time with the second SRS; and

a total transmission power exceeding a total allowable power value;

transmit the first SRS; and

transmit the second SRS with the adjusted transmission power, wherein the first SRS is for beam management with a wider beam width and a smaller number of antenna ports, wherein the second SRS is for Chanel State Information (CSI) acquisition with a narrower beam and a larger number of antenna ports, wherein a CSI value for performing CSI acquisition is estimated based on the second SRS; and

a base station comprising:

one or more second processors; and

second memory storing second instructions that, when executed by the one or more second processors of the base station, cause the base station to:

transmit the parameters to the wireless device;

transmit the first and second downlink control information to the wireless device;

receive the first SRS from the wireless device; and

receive the second SRS from the wireless device.

Assignments (2)
NUNC PRO TUNC ASSIGNMENT Recorded Jul 9, 2021
From: OFINNO, LLC
To: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD
Reel/Frame 056808/0609 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 10, 2020
From: ZHOU, HUA; DINAN, ESMAEL H; PARK, KYUNGMIN; JEON, HYOUNGSUK; BABAEI, ALIREZA
To: OFINNO, LLC
Reel/Frame 053752/0921 →