APPARATUS AND METHOD FOR SUBBAND TIME-FREQUENCY CONFIGURATION

1 . A user equipment (UE), comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive a configuration message for a subband time-frequency configuration, wherein the configuration message indicates frequency domain resources and time domain resources of at least one subband; and

determine a transmission direction of the at least one subband, wherein the transmission direction comprises downlink, uplink, guard-band, or a combination thereof.

2 . The UE of claim 1 , wherein the configuration message indicates the frequency domain resources using a first resource block (RB), or a number of RBs, or both.

3 . The UE of claim 2 , wherein the number of RBs of the frequency domain resources is indicated as a percentage value of a reference number of RBs.

4 . The UE of claim 3 , wherein the reference number of RBs comprises a preconfigured number of RBs, a total number of RBs within a bandwidth part, a total number of RBs within a cell bandwidth, or a combination thereof.

5 . The UE of claim 3 , wherein part of the percentage value is implicitly determined.

6 . The UE of claim 1 , wherein the configuration message indicates the time domain resources using a slot index, a symbol index, a first slot, a first symbol, a number of slots, a number of symbols, or a combination thereof.

7 . The UE of claim 6 , wherein: the number of slots is indicated as a percentage value of a reference number of slots, the number of symbols is indicated as a percentage value of a reference number of symbols, or a combination thereof.

8 . The UE of claim 1 , wherein the time domain resources are implicitly indicated within the configuration message.

9 . The UE of claim 1 , wherein the frequency domain resources are implicitly indicated within the configuration message.

10 . The UE of claim 1 , wherein the configuration message comprises subband full duplex (SBFD) TDD uplink-downlink (UL-DL) patterns associated with corresponding TDD UL-DL patterns.

11 . The UE of claim 10 , wherein the corresponding TDD UL-DL patterns are provided by a tdd-UL-DL-ConfigurationCommon information element (IE), a tdd-UL-DL-ConfigurationDedicated IE, or a combination thereof.

12 . The UE of claim 10 , wherein an indicated SBFD TDD UL-DL pattern of the SBFD TDD UL-DL patterns is associated with one TDD UL-DL pattern of the TDD UL-DL patterns based on a one-to-one mapping rule.

13 . The UE of claim 10 , wherein an indicated SBFD TDD UL-DL pattern of the SBFD TDD UL-DL patterns is associated with at least two TDD UL-DL patterns of the TDD UL-DL patterns based on a one-to-many mapping rule.

14 . The UE of claim 1 , wherein the configuration message is provided by a radio resource control (RRC) configuration message.

15 . The UE of claim 1 , wherein the configuration message is cell-based and carried by a system information block 1 (SIB1) message.

16 . The UE of claim 1 , wherein the indicated subband has same SCS as the associated TDD UL-DL pattern.

17 . The UE of claim 1 , wherein the indicated subband has same time periodicity as the associated TDD UL-DL pattern.

18 . A method performed by a user equipment (UE), the method comprising:

receiving a configuration message for a subband time-frequency configuration, wherein the configuration message indicates frequency domain resources and time domain resources of at least one subband; and

determining a transmission direction of the at least one subband, wherein the transmission direction comprises downlink, uplink, guard-band, or a combination thereof.

19 . A base station, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the base station to:

transmit a configuration message for a subband time-frequency configuration, wherein the configuration message indicates frequency domain resources and time domain resources of at least one subband, a transmission direction of the at least one subband is determined, and the transmission direction comprises downlink, uplink, guard-band, or a combination thereof.

20 . A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:

receive a configuration message for a subband time-frequency configuration, wherein the configuration message indicates frequency domain resources and time domain resources of at least one subband; and

determine a transmission direction of the at least one subband, wherein the transmission direction comprises downlink, uplink, guard-band, or a combination thereof.