Coverage Enhancement with Frequency Selective Transmission

Patent metadata

Field	Value
Publication number	US-2024298317-A1
Application number	US-202418658161-A
Country	US
Kind code	A1
Filing date	May 8, 2024
Priority date	Apr 28, 2020
Publication date	Sep 5, 2024
Grant date	—

Abstract

A wireless device determines uplink precoders for a transmission of a transport block. The transmission of the transport block take place via uplink resources comprising sub-bands. The uplink precoders for each respective sub-band of the sub-bands are based on a transmission precoder of one or more sounding reference signal (SRS) resources transmitted via each of the respective sub-bands.

First claim

What is claimed is:

1 . A method comprising:
determining, by a wireless device, uplink precoders for a transmission of a transport block via uplink resources comprising sub-bands, wherein the uplink precoders for each respective sub-band of the sub-bands are based on a transmission precoder of one or more sounding reference signal (SRS) resources transmitted via each respective sub-band.

2 . The method of claim 1 , further comprising receiving a downlink control information (DCI) indicating:
the transmission via the uplink resources comprising the sub-bands; and a sounding reference signal resource indicator (SRI).

3 . The method of claim 2 , further comprising transmitting, based on the determining of uplink precoders, the transport block of the transmission via the uplink resources.

4 . The method of claim 2 , further comprising:
selecting, based on the SRI one or more SRS resources; and transmitting, to a base station and before receiving the DCI, the one or more SRS resources.

5 . The method of claim 4 , wherein selecting the one or more SRS resources comprises: determining, based on the SRI, one or more transmission occasions of the one or more SRS resources.

6 . The method of claim 5 , wherein the one or more transmission occasions comprise one or more occasions in which the one or more SRS resources are transmitted via the sub-bands.

7 . The method of claim 4 , wherein the one or more SRS resources are transmitted via the sub-bands and with the uplink precoders in one or more transmission occasions.

8 . 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:
determine uplink precoders for a transmission of a transport block via uplink resources comprising sub-bands, wherein the uplink precoders for each respective sub-band of the sub-bands are based on a transmission precoder of one or more sounding reference signal (SRS) resources transmitted via each respective sub-band.

9 . The wireless device of claim 8 , wherein the instructions further cause the wireless device to receive a downlink control information (DCI) indicating:
the transmission via the uplink resources comprising the sub-bands; and a sounding reference signal resource indicator (SRI).

10 . The wireless device of claim 9 , wherein the instructions further cause the wireless device to transmit, based on the determined uplink precoders, the transport block of the transmission via the uplink resources.

11 . The wireless device of claim 9 , wherein the instructions further cause the wireless device to
select, based on the SRI one or more SRS resources; and transmit, to a base station and before receiving the DCI, the one or more SRS resources.

12 . The wireless device of claim 11 , wherein selecting the one or more SRS resources comprises: determining, based on the SRI, one or more transmission occasions of the one or more SRS resources.

13 . The wireless device of claim 12 , wherein the one or more transmission occasions comprise one or more occasions in which the one or more SRS resources are transmitted via the sub-bands.

14 . The wireless device of claim 11 , wherein the one or more SRS resources are transmitted via the sub-bands and with the uplink precoders in one or more transmission occasions.

15 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:
determine uplink precoders for a transmission of a transport block via uplink resources comprising sub-bands, wherein the uplink precoders for each respective sub-band of the sub-bands are based on a transmission precoder of one or more sounding reference signal (SRS) resources transmitted via each respective sub-band.

16 . The non-transitory computer-readable medium of claim 15 , wherein the instructions further cause the wireless device to receive a downlink control information (DCI) indicating:
the transmission via the uplink resources comprising the sub-bands; and a sounding reference signal resource indicator (SRI).

17 . The non-transitory computer-readable medium of claim 16 , wherein the instructions further cause the wireless device to transmit, based on the determined uplink precoders, the transport block of the transmission via the uplink resources.

18 . The non-transitory computer-readable medium of claim 16 , wherein the instructions further cause the wireless device to
select, based on the SRI one or more SRS resources; and transmit, to a base station and before receiving the DCI, the one or more SRS resources.

19 . The non-transitory computer-readable medium of claim 18 , wherein selecting the one or more SRS resources comprises: determining, based on the SRI, one or more transmission occasions of the one or more SRS resources, and the one or more transmission occasions comprise one or more occasions in which the one or more SRS resources are transmitted via the sub-bands.

20 . The non-transitory computer-readable medium of claim 18 , wherein the one or more SRS resources are transmitted via the sub-bands and with the uplink precoders in one or more transmission occasions.

Assignees

• Ofinno Llc

Inventors

• Xu Kai
• Dinan Esmael Hejazi
• Zhou Hua
• Yi Yunjung
• Park Jonghyun
• Chae Hyukjin

Classifications

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L25/0224

  using sounding signals · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title