IP Library › Granted Patent US 12696096

Granted Patent B2

US 12696096 · App. 18/148,664 · Granted Jul 28, 2026

Soft guard band

Inventors: Min Soo Sim (San Diego, CA); Shubham Ahuja (San Diego, CA); Wooseok Nam (San Diego, CA); Alexander Dorosenco (El Cajon, CA); Tao Luo (San Diego, CA)

Assignee: QUALCOMM Incorporated

H04W16/10 H04L5/0051 H04L5/14 H04W72/231

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Quick Facts

Patent No.: US 12696096
App. No.: 18/148,664
Granted: Jul 28, 2026
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless device may select one or more parameters for a soft guard band in a subband full duplex slot that are different than one or more parameters for a hard guard band. The wireless device may transmit or receive a communication using the soft guard band and the hard guard band, wherein the soft guard band is between a center band and the hard guard band. Numerous other aspects are described.

Claims (43)

1 . A wireless device for wireless communication, comprising:

memory; and

one or more processors, coupled to the memory, configured to:

select one or more parameters for a soft guard band in a subband full duplex (SBFD) slot that are different than one or more parameters for a hard guard band and different than one or more parameters for a center band, wherein the SBFD slot comprises the center band, the soft guard band, the hard guard band, and an outside frequency band; and

transmit or receive, in the SBFD slot, a communication using the soft guard band and the hard guard band, wherein the soft guard band is between the center band and the hard guard band.

2 . The wireless device of claim 1 , wherein a demodulation reference signal (DMRS) of the soft guard band is different than a DMRS of the center band.

3 . The wireless device of claim 1 , wherein a phase tracking reference signal (PTRS) of the soft guard band is different than a PTRS of the center band.

4 . The wireless device of claim 1 , wherein a reference signal density of the soft guard band is greater or lower than a reference signal density of the center band.

5 . The wireless device of claim 1 , wherein a transmit power of the soft guard band is greater or lower than a transmit power of the center band.

6 . The wireless device of claim 1 , wherein code block segmentation and rate matching is separated for the soft guard band.

7 . The wireless device of claim 1 , wherein a size of code blocks of the soft guard band is greater or lower than a size of code blocks of the center band.

8 . The wireless device of claim 1 , wherein a code block is not mapped across the soft guard band and the center band.

9 . The wireless device of claim 1 , wherein the one or more processors are configured to:

map systematic bits to the center band; and

map parity bits to the soft guard band.

10 . The wireless device of claim 1 , wherein the soft guard band is associated with non-self-decodable redundancy versions (RVs), and the center band is associated with self-decodable RVs.

11 . The wireless device of claim 1 , wherein a modulation order of the soft guard band is greater or lower than a modulation order of the center band.

12 . The wireless device of claim 1 , wherein a multiple-input-multiple-output (MIMO) scheme of the soft guard band is different than a MIMO scheme of the center band.

13 . The wireless device of claim 1 , wherein a precoding matrix indicator (PMI) for the soft guard band is different than a PMI for the center band.

14 . The wireless device of claim 1 , wherein a quantity of layers of the soft guard band is different than a quantity of layers of the center band.

15 . The wireless device of claim 1 , wherein a physical resource block (PRB) group size for the soft guard band is different than a PRB group size of the center band.

16 . The wireless device of claim 1 , wherein a channel state information (CSI) resource configuration for the soft guard band is different than a CSI resource configuration for the center band.

17 . The wireless device of claim 1 , wherein a channel state information (CSI) reporting configuration for the soft guard band is different than a CSI reporting configuration for the center band.

18 . The wireless device of claim 1 , wherein the one or more processors are configured to transmit an indication of a capability of the wireless device to support use of the soft guard band.

19 . The wireless device of claim 1 , wherein downlink control information (DCI) transmitted for the soft guard band is different than DCI transmitted for the center band.

20 . The wireless device of claim 1 , wherein the one or more processors are configured to receive an indication that use of the soft guard band is to be activated or deactivated.

21 . A method of wireless communication performed by a wireless device, comprising:

selecting one or more parameters for a soft guard band in a subband full duplex (SBFD) slot that are different than one or more parameters for a hard guard band and different than one or more parameters for a center band, wherein the SBFD slot comprises the center band, the soft guard band, the hard guard band, and an outside frequency band; and

transmitting or receiving, in the SBFD slot, a communication using the soft guard band and the hard guard band, wherein the soft guard band is between the center band and the hard guard band.

22 . The method of claim 21 , wherein a demodulation reference signal (DMRS) of the soft guard band is different than a DMRS of the center band or a phase tracking reference signal (PTRS) of the soft guard band is different than a PTRS of the center band.

23 . The method of claim 21 , wherein a reference signal density or transmit power of the soft guard band is greater or lower than a reference signal density or transmit power of the center band.

24 . The method of claim 21 , wherein code block segmentation and rate matching is separated for the soft guard band.

25 . The method of claim 21 , wherein the soft guard band is associated with non-self-decodable redundancy versions (RVs), and the center band is associated with self-decodable RVs.

26 . The method of claim 21 , wherein a modulation order of the soft guard band is greater or lower than a modulation order of the center band.

27 . The method of claim 21 , wherein a multiple-input-multiple-output (MIMO) scheme of the soft guard band is different than a MIMO scheme of the center band.

28 . The method of claim 21 , wherein a channel state information (CSI) resource configuration for the soft guard band is different than a CSI resource configuration for the center band.

29 . A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:

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

transmit or receive, in the SBFD slot, a communication using the soft guard band and the hard guard band, wherein the soft guard band is between the center band and the hard guard band.

30 . An apparatus for wireless communication, comprising:

means for selecting one or more parameters for a soft guard band in a subband full duplex (SBFD) slot that are different than one or more parameters for a hard guard band and different than one or more parameters for a center band, wherein the SBFD slot comprises the center band, the soft guard band, the hard guard band, and an outside frequency band; and

means for transmitting or receiving, in the SBFD slot, a communication using the soft guard band and the hard guard band, wherein the soft guard band is between the center band and the hard guard band.