IP Library › Granted Patent US 12,309,770
Granted Patent B2
US 12,309,770 · App. 17/791,807 · Granted May 20, 2025

Methods and apparatus for reference signal associations

Inventors: Fang Yuan (Beijing, CN); Wooseok Nam (San Diego, CA); Tao Luo (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W72/1268H04B7/0639H04L5/0051
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Quick Facts
Patent No.
US 12,309,770
App. No.
17/791,807
Granted
May 20, 2025
Kind
B2
Abstract

Aspects of the present disclosure include methods, apparatuses, and computer readable media for receiving an indicator for uplink transmission indicating at least an association between at least one of one or more first reference signal ports and at least one of one or more second reference signal ports for a plurality of precoding configurations, transmitting, in response to receiving the indicator, a plurality of first reference signals via a plurality of antenna panels using the plurality of precoding configurations, wherein the plurality of first reference signals is associated with the one or more first reference signal ports, and transmitting one or more second reference signals based on the association via the plurality of antenna panels using the plurality of precoding configurations, wherein the one or more second reference signals is associated with the one or more second reference signal ports.

Claims (78)

1. A method of wireless communication by a user equipment (UE), comprising:

receiving an indicator for uplink transmission indicating at least an association between at least one of one or more first reference signal ports and at least one of one or more second reference signal ports for a plurality of precoding configurations, wherein receiving the indicator further comprises receiving a first bit comprising a first bit value indicating whether a first port of the one or more first reference signal ports is associated with a first port of the one or more second reference signal ports for a first precoding configuration of the plurality of precoding configurations for a first layer of the uplink transmission, and a second bit comprising a second bit value indicating whether the first port of the one or more first reference signal ports is associated with the first port or a second port of the one or more second reference signal ports for a second precoding configuration of the plurality of precoding configurations for the first layer of the uplink transmission;

transmitting, in response to receiving the indicator, a plurality of first reference signals based on the association via a plurality of antenna panels using the plurality of precoding configurations, wherein the plurality of first reference signals is associated with the one or more first reference signal ports; and

transmitting one or more second reference signals based on the association via the plurality of antenna panels using the plurality of precoding configurations, wherein the one or more second reference signals is associated with the one or more second reference signal ports.

2. The method of claim 1 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

3. The method of claim 2 , wherein the uplink transmission utilizes time division multiplexing.

4. The method of claim 1 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with a second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

5. The method of claim 4 , wherein the uplink transmission utilizes frequency division multiplexing.

6. The method of claim 1 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with a second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

7. The method of claim 6 , wherein the uplink transmission utilizes frequency division multiplexing.

8. A user equipment (UE), comprising:

a memory comprising instructions;

a transceiver; and

one or more processors operatively coupled with the memory and the transceiver, the one or more processors configured to execute instructions in the memory to:

receive, via the transceiver, an indicator for uplink transmission indicating at least an association between at least one of one or more first reference signal ports and at least one of one or more second reference signal ports for a plurality of precoding configurations, wherein receiving the indicator further comprises receiving a first bit comprising a first bit value indicating whether a first port of the one or more first reference signal ports is associated with a first port of the one or more second reference signal ports for a first precoding configuration of the plurality of precoding configurations for a first layer of the uplink transmission, and a second bit comprising a second bit value indicating whether the first port of the one or more first reference signal ports is associated with the first port or a second port of the one or more second reference signal ports for a second precoding configuration of the plurality of precoding configurations for the first layer of the uplink transmission;

transmit, via the transceiver, in response to receiving the indicator, a plurality of first reference signals via a plurality of antenna panels using the plurality of precoding configurations, wherein the plurality of first reference signals is associated with the one or more first reference signal ports; and

transmit, via the transceiver, one or more second reference signals based on the association via the plurality of antenna panels using the plurality of precoding configurations, wherein the one or more second reference signals is associated with the one or more second reference signal ports.

9. The UE of claim 8 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

10. The UE of claim 9 , wherein the uplink transmission utilizes time division multiplexing.

11. The UE of claim 8 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with a second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

12. The UE of claim 11 , wherein the uplink transmission utilizes frequency division multiplexing.

13. The UE of claim 8 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with a second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

14. The UE of claim 13 , wherein the uplink transmission utilizes frequency division multiplexing.

15. A non-transitory computer readable medium having instructions stored therein that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to:

receive an indicator for uplink transmission indicating at least an association between at least one of one or more first reference signal ports and at least one of one or more second reference signal ports for a plurality of precoding configurations, wherein receiving the indicator further comprises receiving a first bit comprising a first bit value indicating whether a first port of the one or more first reference signal ports is associated with a first port of the one or more second reference signal ports for a first precoding configuration of the plurality of precoding configurations for a first layer of the uplink transmission, and a second bit comprising a second bit value indicating whether the first port of the one or more first reference signal ports is associated with the first port or a second port of the one or more second reference signal ports for a second precoding configuration of the plurality of precoding configurations for the first layer of the uplink transmission;

transmit, in response to receiving the indicator, a plurality of first reference signals via a plurality of antenna panels using the plurality of precoding configurations, wherein the plurality of first reference signals is associated with the one or more first reference signal ports; and

transmit one or more second reference signals based on the association via the plurality of antenna panels using the plurality of precoding configurations, wherein the one or more second reference signals is associated with the one or more second reference signal ports.

16. The non-transitory computer readable medium of claim 15 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

17. The non-transitory computer readable medium of claim 16 , wherein the uplink transmission utilizes time division multiplexing.

18. The non-transitory computer readable medium of claim 15 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with a second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

19. The non-transitory computer readable medium of claim 18 , wherein the uplink transmission utilizes frequency division multiplexing.

20. The non-transitory computer readable medium of claim 15 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with a second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the second port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

21. The non-transitory computer readable medium of claim 20 , wherein the uplink transmission utilizes frequency division multiplexing.

22. A user equipment (UE), comprising:

means for receiving an indicator for uplink transmission indicating at least an association between at least one of one or more first reference signal ports and at least one of one or more second reference signal ports for a plurality of precoding configurations, wherein receiving the indicator further comprises receiving a first bit comprising a first bit value indicating whether a first port of the one or more first reference signal ports is associated with a first port of the one or more second reference signal ports for a first precoding configuration of the plurality of precoding configurations for a first layer of the uplink transmission, and a second bit comprising a second bit value indicating whether the first port of the one or more first reference signal ports is associated with the first port or a second port of the one or more second reference signal ports for a second precoding configuration of the plurality of precoding configurations for the first layer of the uplink transmission;

means for transmitting, in response to receiving the indicator, a plurality of first reference signals via a plurality of antenna panels using the plurality of precoding configurations, wherein the plurality of first reference signals is associated with the one or more first reference signal ports; and

means for transmitting one or more second reference signals based on the association via the plurality of antenna panels using the plurality of precoding configurations, wherein the one or more second reference signals is associated with the one or more second reference signal ports.

23. The UE of claim 22 , wherein:

a first value of the first bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission;

a second value of the first bit indicates that a second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the first precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission;

a first value of the second bit indicates that the first port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for a second layer of the uplink transmission; and

a second value of the second bit indicates that the second port of the one or more first reference signal ports is associated with the first port of the one or more second reference signal ports for the second precoding configuration of the plurality of precoding configurations for the second layer of the uplink transmission.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 11, 2022
From: YUAN, FANG; NAM, WOOSEOK; LUO, TAO
To: QUALCOMM INCORPORATED
Reel/Frame 060622/0278 →
Priority Claims (1)
WO PCT/CN2020/074113 · Jan 31, 2020 · international
Continuity (1)
Related Publication 20230045134A1 · Feb 9, 2023
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