IP Library Granted Patent US 11,469,871
Granted Patent B2
US 11,469,871 · App. 16/619,579 · Granted Oct 11, 2022

Signaling of SRS resources for PUSCH rate matching

Inventors: Shiwei Gao (Nepean, CA); Mattias Frenne (Uppsala, SE); Stephen Grant (Pleasanton, CA); Robert Mark Harrison (Grapevine, TX); Siva Muruganathan (Stittsville, CA)
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
H04L5/0053H04B1/7143H04L5/0007H04L5/0048H04L5/0094H04W72/0413
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Quick Facts
Patent No.
US 11,469,871
App. No.
16/619,579
Granted
Oct 11, 2022
Kind
B2
Abstract

User equipment, base station and methods are provided for user equipment uplink data transmission to a base station. In one embodiment, the user equipment includes receiving circuitry configured to receive signaling information in an uplink data grant about unavailable resource elements in a uplink subframe for uplink data transmission over a Physical Uplink Shared Channel (PUSCH) indicated by the data grant and processing circuitry configured to transmit the PUSCH on only available resource elements in the subframe.

Claims (40)

1. A user equipment for uplink data transmission to a base station, the user equipment comprising:

receiving circuitry configured to receive information in an uplink data grant about unavailable resource elements in an uplink slot for uplink data transmission over a Physical Uplink Shared Channel (PUSCH) indicated by the uplink data grant, the received information about the unavailable resource elements including:

at least an indication of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol;

at least one bit being associated with an SRS subband; and

an indication of a zero transmission power in the SRS subband in the at least one OFDM symbol; and

processing circuitry configured to:

transmit the PUSCH on only available resource elements in the uplink slot.

2. The user equipment of claim 1 , wherein the information about the unavailable resource elements includes a bitmap with each bit associated with one SRS resource configuration.

3. The user equipment of claim 1 , wherein the at least one bit is part of at least one of a bitmap with each bit associated with the SRS subband and a bitmap indicating OFDM symbols.

4. The user equipment of claim 1 , wherein the size of a bitmap is configurable by a Radio Resource Control signaling.

5. The user equipment of claim 1 , wherein the data transmission is in an NR wireless network.

6. The user equipment of claim 1 , wherein the information about the unavailable resource elements includes an indication of a SRS hopping pattern.

7. The user equipment of claim 1 , wherein the information about the unavailable resource elements includes an indication of at least one of a SRS hopping pattern and a bitmap indicating OFDM symbols containing SRS.

8. The user equipment of claim 1 , wherein the processing circuitry is further configured to determine available resource elements (REs) for the PUSCH in OFDM symbols containing any SRS resource.

9. The user equipment of claim 1 , wherein the indicated resources for uplink sounding reference signals (SRS) are for at least one other user equipment and the processing circuitry is further configured to treat the SRS resources as zero transmit power resources.

10. A method for a user equipment for uplink data transmission to a base station, the method comprising:

receiving information in an uplink data grant about unavailable resource elements in an uplink slot for uplink data transmission over a Physical Uplink Shared Channel (PUSCH) indicated by the uplink data grant, the received information about the unavailable resource elements including:

at least an indication of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol;

at least one bit being associated with an SRS subband; and

an indication of a zero transmission power in the SRS subband in the at least one OFDM symbol; and

transmitting the PUSCH using only available resource elements in the uplink slot.

11. The method of claim 10 , wherein the information about the unavailable resource elements includes a bitmap with each bit associated with one SRS resource configuration.

12. The method of claim 10 , wherein the indication of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol is configured with SRS.

13. A base station for receiving uplink data transmission in a wireless network, the base station comprising:

processing circuitry configured to signal information to a user equipment in an uplink data grant about unavailable resource elements in an uplink slot for uplink data transmission over a Physical Uplink Shared Channel (PUSCH) indicated by the uplink data grant, the signaled information about the unavailable resource elements including:

at least an indication of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol;

at least one bit being associated with an SRS subband; and

an indication of a zero transmission power in the SRS subband in the at least one OFDM symbol; and

receiver circuitry configured to receive the PUSCH from the user equipment according to the signaled information in the uplink data grant.

14. The base station of claim 13 , wherein the information about the unavailable resource elements includes a bitmap with each bit associated with one SRS resource configuration.

15. The base station of claim 13 , wherein the indication of at least one OFDM symbol is configured with SRS.

16. The base station of claim 13 , wherein the at least one bit is part of at least one of a bitmap with each bit associated with the SRS subband.

17. A method for base station for receiving uplink data transmission in a wireless network, the method comprising:

signaling information to the user equipment in an uplink data grant about unavailable resource elements in an uplink slot for uplink data transmission over a Physical Uplink Shared Channel (PUSCH) indicated by the uplink data grant, the signaled information about the unavailable resource elements including:

at least an indication of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol;

at least one bit being associated with an SRS subband; and

an indication of a zero transmission power in the SRS subband in the at least one OFDM symbol; and

receiving the PUSCH from the user equipment according to the signaled information in the uplink data grant.

18. The method of claim 17 , wherein the information about the unavailable resource elements includes a bitmap with each bit associated with one SRS resource configuration.

19. The method of claim 17 , wherein the indication of at least one OFDM symbol is configured with SRS.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 5, 2019
From: GAO, SHIWEI; FRENNE, MATTIAS; GRANT, STEPHEN; HARRISON, ROBERT MARK; MURUGANATHAN, SIVA
To: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Reel/Frame 051189/0726 →
Continuity (2)
Provisional Application 62476253 · Mar 24, 2017
Related Publication 20200169369A1 · May 28, 2020