Method and device for resource indication in sub-band non-overlapping full duplex scene

Abstract

The embodiment of the invention relates to a method and equipment for resource indication in a sub-band non-overlapping full duplex (SBFD) scene. In accordance with some embodiments of the present disclosure, a UE may: determine a reference region, where the reference region includes a set of resource blocks (RBs) in a frequency domain and a set of symbols in a time domain, the set of symbols including at least one SBFD symbol; and receiving downlink control information (DCI) indicating whether one or more RBs and one or more symbols in a resource are used for DL reception or indicating whether one or more RBs and one or more symbols in the resource are used for UL transmission, where RBs in the frequency domain of the resource are determined based on the reference region.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to wireless communication technologies, and more particularly, to resource indication in a sub-band non-overlapping full-duplex (SBFD) scenario. Background Art

[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasting, and so on. A wireless communication system may employ a multiple access technology capable of supporting communication with multiple users by sharing available system resources such as time, frequency, and power. Examples of wireless communication systems may include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may also be referred to as New Radio (NR) systems.

[0003] To achieve superior data rates and reduce latency in a wireless system such as a 5G system, the spectrum in higher frequency bands may be utilized. To overcome the reduced coverage on such carriers, a duplex scheme that enables simultaneous use of downlink (DL) and uplink (UL) within a time division duplex (TDD) carrier by using non-overlapping frequency resources (which may be referred to as "SBFD") may be adopted. One objective of this scheme is to extend the duration during which uplink transmissions can occur for improved uplink coverage and capacity.

[0004] With the introduction of SBFD, resource indication in certain use cases may pose problems. The industry desires techniques to facilitate resource indication in SBFD scenarios. Summary of the Invention

[0005] Some embodiments of the present disclosure provide a user equipment (UE). The UE may include: a transceiver; and a processor coupled to the transceiver. The processor may be configured to: determine a reference region, where the reference region includes a set of resource blocks (RBs) in the frequency domain and a set of symbols in the time domain, the set of symbols including at least one SBFD symbol; and receive downlink control information (DCI) that indicates whether one or more RBs and one or more symbols in the resource are for DL reception or indicates whether one or more RBs and one or more symbols in the resource are for UL transmission, where the RBs in the frequency domain of the resource are determined based on the reference region.

[0006] In some embodiments of the present disclosure, the resource includes the set of symbols in the time domain.

[0007] In some embodiments of the present disclosure, the resources are divided into a first part and a second part in the frequency domain, and the first part and the second part are inserted into UL subbands. The set of symbols is divided into at least one symbol group, the DCI includes a pair of bits for each of the at least one symbol group, the first bit of the pair of bits indicates whether the first part in the symbol group is used for DL reception, and the second bit of the pair of bits indicates whether the second part in the symbol group is used for DL reception.

[0008] In some embodiments of the present disclosure, the first part and the second part are inserted into the UL subband and the guard band.

[0009] Some embodiments of the present disclosure provide a base station (BS). The BS may include: a transceiver; and a processor coupled to the transceiver. The processor may be configured to: determine a reference region of a UE, where the reference region includes a set of RBs in the frequency domain and a set of symbols in the time domain, the set of symbols including at least one SBFD symbol; and transmit DCI to the UE, which indicates whether one or more RBs and one or more symbols in the resources are used for DL reception or indicates whether one or more RBs and one or more symbols in the resources are used for UL transmission, where the RBs in the frequency domain of the resources are determined based on the reference region.

[0010] In some embodiments of the present disclosure, the DCI indicates whether one or more RBs and one or more symbols are used for DL reception, and the RBs in the frequency domain of the resources are determined by removing the RBs in the UL subband from the set of RBs. In some embodiments of the present disclosure, the DCI indicates whether one or more RBs and one or more symbols are used for UL transmission, and the RBs in the frequency domain of the resources are determined by removing the RBs not in the UL subband from the set of RBs.

[0011] In some embodiments of the present disclosure, when all the symbols in the reference region are SBFD symbols, the RBs in the frequency domain of the resources are determined by removing the RBs in the UL subband from the set of RBs or by removing the RBs not in the UL subband from the set of RBs.

[0012] In some embodiments of the present disclosure, the set of symbols is divided into at least one symbol group in the time domain. For each of the at least one symbol group, in the case where all the symbols in the symbol group are SBFD symbols, the RBs in the frequency domain of the resources in the symbol group are determined by removing the RBs in the UL subband from the set of RBs or by removing the RBs not in the UL subband from the set of RBs.

[0013] In some embodiments of the present disclosure, when at least one symbol in the reference region is not an SBFD symbol, the RB in the frequency domain of the resource is equal to the set of RBs.

[0014] In some embodiments of the present disclosure, the set of symbols is divided into at least one symbol group in the time domain; and for each of the at least one symbol group, when at least one symbol in the symbol group is not an SBFD symbol, the RB in the frequency domain of the resource in the symbol group is equal to the set of RBs.

[0015] In some embodiments of the present disclosure, the number of removed RBs is determined based on the SCS configuration of the DL reception or UL transmission and the SCS configuration of the UL sub-band.

[0016] In some embodiments of the present disclosure, the processor is further configured to transmit an indication indicating a second set of RBs. Depending on the set of symbols in the reference region, the RB in the frequency domain of the resource is equal to the second set of RBs or the set of RBs.

[0017] In some embodiments of the present disclosure, when all symbols in the reference region are SBFD symbols, the RB in the frequency domain of the resource is equal to the second set of RBs; otherwise, the RB in the frequency domain of the resource is equal to the set of RBs.

[0018] In some embodiments of the present disclosure, the set of symbols is divided into at least one symbol group. For each of the at least one symbol group, when all symbols in the symbol group are SBFD symbols, the RB in the frequency domain of the resource in the symbol group is equal to the second set of RBs; otherwise, the RB in the frequency domain of the resource in the symbol group is equal to the set of RBs.

[0019] In some embodiments of the present disclosure, the resource includes the set of symbols in the time domain.

[0020] In some embodiments of the present disclosure, the resource is divided into multiple parts in the frequency domain. The set of symbols is divided into at least one symbol group, the DCI includes an indicator for each of the at least one symbol group, and each bit of the indicator indicates whether the corresponding part in the multiple parts in the symbol group is used for DL reception or indicates whether the corresponding part in the multiple parts in the symbol group is used for UL transmission.

[0021] In some embodiments of the present disclosure, the resource or the reference region is divided into a first part and a second part in the frequency domain, and the first part and the second part are inserted into UL subbands. The set of symbols is divided into at least one symbol group, the DCI includes a pair of bits for each of the at least one symbol group, the first bit of the pair of bits indicates whether the first part in the symbol group is used for DL reception, and the second bit of the pair of bits indicates whether the second part in the symbol group is used for DL reception.

[0022] In some embodiments of the present disclosure, the first part and the second part are inserted into the UL subbands and the guard bands.

[0023] Some embodiments of the present disclosure provide a method performed by a UE. The method may include: determining a reference region, where the reference region includes a set of RBs in the frequency domain and a set of symbols in the time domain, and the set of symbols includes at least one SBFD symbol; and receiving DCI that indicates whether one or more RBs and one or more symbols in a resource are used for DL reception or indicates whether one or more RBs and one or more symbols in the resource are used for UL transmission, where the RBs in the frequency domain of the resource are determined based on the reference region.

[0024] Some embodiments of the present disclosure provide a method performed by a BS. The method may include: determining a reference region of a UE, where the reference region includes a set of RBs in the frequency domain and a set of symbols in the time domain, and the set of symbols includes at least one SBFD symbol; and transmitting DCI to the UE that indicates whether one or more RBs and one or more symbols in a resource are used for DL reception or indicates whether one or more RBs and one or more symbols in the resource are used for UL transmission, where the RBs in the frequency domain of the resource are determined based on the reference region.

[0025] Some embodiments of the present disclosure provide an apparatus. According to some embodiments of the present disclosure, the apparatus may include: at least one non-transitory computer-readable medium having computer-executable instructions stored thereon; at least one receiving circuit system; at least one transmitting circuit system; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receiving circuit system, and the at least one transmitting circuit system, where the at least one non-transitory computer-readable medium and the computer-executable instructions may be configured to cause the at least one processor to cause the apparatus to perform a method according to some embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To describe the manner in which the advantages and features of the present disclosure can be obtained, a description of the present disclosure is presented by reference to specific embodiments of the present disclosure illustrated in the accompanying drawings. These drawings only depict exemplary embodiments of the present disclosure and should not be considered as limiting its scope.

[0027] Figure 1 Schematic diagram illustrating a wireless communication system according to some embodiments of the present disclosure;

[0028] Figure 2 Illustration of exemplary DL UE - to - UE multiplexing according to some embodiments of the present disclosure;

[0029] Figure 3 and 4 Illustration of an exemplary SBFD scheme according to some embodiments of the present disclosure;

[0030] Figure 5 Flowchart illustrating an exemplary procedure for resource indication in an SBFD scenario according to some embodiments of the present disclosure;

[0031] Figures 6 to 9 Illustration of an exemplary SBFD scheme according to some embodiments of the present disclosure;

[0032] Fig.10 Flowchart illustrating an exemplary procedure for resource indication in an SBFD scenario according to some embodiments of the present disclosure; and

[0033] Figure 11 Block diagram illustrating an exemplary device according to some embodiments of the present disclosure. Detailed Description

[0034] The detailed description of the drawings is intended to be a description of the preferred embodiments of the present disclosure and is not intended to represent the only form in which the present disclosure can be practiced. It should be understood that the same or equivalent functions can be achieved by different embodiments that are intended to be covered by the spirit and scope of the present disclosure.

[0035] Reference will now be made in detail to some embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. For the sake of promoting understanding, embodiments are provided under a specific network architecture and new service scenarios (such as 3rd Generation Partnership Project (3GPP) 5G (NR), 3GPP Long Term Evolution (LTE) Release 8, etc.). It is expected that with the development of the network architecture and new service scenarios, all embodiments in the present disclosure are also applicable to similar technical problems; and furthermore, the terms listed in the present disclosure may change, which should not affect the principles of the present disclosure.

[0036] Figure 1 Schematic diagram illustrating a wireless communication system 100 according to some embodiments of the present disclosure.

[0037] As Figure 1As shown, the wireless communication system 100 may include a number of UEs 101 (such as UEs 101a and 101b) and base stations (such as BS 102). Although Figure 1 a specific number of UEs 101 and BSs 102 are depicted, it is contemplated that any number of UEs and BSs may be included in the wireless communication system 100.

[0038] The UE 101 may include a computing device such as a desktop computer, laptop computer, personal digital assistant (PDA), tablet computer, smart TV (such as a TV connected to the Internet), set-top box, gaming console, security system (including security cameras), in-vehicle computer, network device (such as a router, switch, and modem), or the like. According to some embodiments of the present disclosure, the UE 101 may include a portable wireless communication device, smartphone, cellular phone, flip phone, device with a subscriber identity module, personal computer, pager, or any other device capable of transmitting and receiving communication signals over a wireless network. In some embodiments of the present disclosure, the UE 101 includes a wearable device such as a smartwatch, fitness band, optical head-mounted display, or the like. Additionally, the UE 101 may be referred to as a subscriber unit, mobile device, mobile station, user, terminal, mobile terminal, wireless terminal, fixed terminal, subscriber station, user terminal, or device or by other terms used in the art. The UE 101 may communicate with the BS 102 via an uplink (UL) communication signal.

[0039] The BSs 102 may be distributed throughout a geographical area. In certain embodiments of the present disclosure, the BS 102 may also be referred to as an access point, access terminal, base, base unit, macro cell, Node B, evolved Node B (eNB), gNB, home Node B, relay node, or device or by other terms used in the art. The BS 102 is generally part of a radio access network that may include one or more controllers communicatively coupled to one or more corresponding BSs 102. The BS 102 may communicate with the UE 101 via a downlink (DL) communication signal.

[0040] The wireless communication system 100 may be compatible with any type of network capable of transmitting and receiving wireless communication signals. For example, the wireless communication system 100 is compatible with the following networks: wireless communication networks, cellular phone networks, time division multiple access (TDMA)-based networks, code division multiple access (CDMA)-based networks, orthogonal frequency division multiple access (OFDMA)-based networks, LTE networks, 3GPP-based networks, 3GPP 5G networks, satellite communication networks, high-altitude platform networks, and / or other communication networks.

[0041] In some embodiments of the present disclosure, the wireless communication system 100 is compatible with the 5G NR of the 3GPP protocol. For example, the BS 102 may transmit data using an orthogonal frequency division multiplexing (OFDM) modulation scheme on the DL, and the UE 101 may transmit data using a discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) or cyclic prefix-OFDM (CP-OFDM) scheme on the UL. However, more generally, the wireless communication system 100 may implement some other open or proprietary communication protocols, such as WiMAX and other protocols.

[0042] In some embodiments of the present disclosure, BS 102 and UE 101 may communicate using other communication protocols, such as the IEEE 802.11 family of wireless communication protocols. Furthermore, in some embodiments of the present disclosure, BS 102 and UE 101 may communicate via licensed spectrum, while in some other embodiments, BS 102 and UE 101 may communicate via unlicensed spectrum. The present disclosure is not intended to be limited to implementing any particular wireless communication system architecture or protocol.

[0043] There are multiple service types in wireless communication systems (such as NR systems), including but not limited to enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (URLLC), machine-type communication (MTC), etc. Different services may have different requirements. For example, for URLCC, latency and reliability are very important. In order to ensure the latency of URLLC services, they should be scheduled immediately. In some cases, they may occupy the position of another service, such as eMBB services. In order to ensure the decoding accuracy of eMBB services, the BS may indicate the preempted resources occupied by the URLLC service, and the UE may use the data transmitted in the remaining resources for decoding. The smaller the indication granularity, the greater the resource utilization and the higher the decoding accuracy. A similar process may also occur on the UL. The UE can cancel a specific uplink transmission based on this indication.

[0044] Details of the resource indication in the above-mentioned DL inter-UE multiplexing process and UL inter-UE multiplexing process will be described below.

[0045] DL inter-UE multiplexing

[0046] In some embodiments of the present disclosure, when a UE detects a specific DCI format (referred to as DCI format 2_1 for short) from a serving cell among a set of configured serving cells, the UE may assume that there is no transmission to the UE in the RBs (denoted as RB group #A) and a set of symbols (denoted as symbol group #A) indicated by this DCI format 2_1 from a set of RBs in the last physical downlink control channel (PDCCH) monitoring period. For clarity, in the context of the present disclosure, this indication may also be referred to as a preemption indication. In some embodiments, the preemption indication may not apply to the reception of a synchronization signal / physical broadcast channel (SS / PBCH) block. In the context of the present disclosure, the region defined by RB group #A in the frequency domain and symbol group #A in the time domain may be referred to as a preemption indication region.

[0047] In some embodiments, RB group #A may be equal to the active downlink bandwidth part (BWP) and contain B INT RBs (e.g., physical RBs (PRBs)). In some embodiments, symbol group #A may be based on the PDCCH monitoring period and may contain N INT symbols.

[0048] For example, assuming that the UE detects DCI format 2_1 in the PDCCH reception in a certain time slot, symbol group #A may be the last symbols before the first symbol of the PDCCH reception in the time slot, where T INT represents the PDCCH monitoring periodicity (which may be provided by a higher layer parameter (e.g., monitoringSlotPeriodicityAndOffset specified in the 3GPP specification)), represents the number of symbols per time slot (e.g., 14 symbols), μ represents the subcarrier spacing (SCS) configuration of the serving cell with a mapping to the corresponding field in DCI format 2_1, and μ INT represents the SCS configuration of the DL BWP in which the UE receives the PDCCH with DCI format 2_1.

[0049] The time slot format may be configured or determined by a higher layer configuration (e.g., cell common UL / DL configuration, such as tdd-UL-DL-ConfigurationCommon specified in the 3GPP specification; or UE specific UL / DL configuration, such as tdd-UL-DL-ConfigurationDedicated specified in the 3GPP specification). When the UE is provided with a time slot format configuration (e.g., tdd-UL-DL-ConfigurationCommon), the symbols indicated as uplink by this configuration may be excluded from the last symbols before the first symbol of the PDCCH reception in the time slot. The resulting symbol group contains NINT symbol.

[0050] In some embodiments, the UE does not desire that the provided values of μ, μ INT and T INT result in a non-integer value. In some embodiments, the UE does not desire to configure more than one PDCCH monitoring occasion for DCI format 2_1 in a time slot.

[0051] In some embodiments, the preemption indication (e.g., for RB group #A and symbol group #A) can have several granularity levels. In some embodiments, a particular granularity can be indicated by a higher layer parameter (e.g., timeFrequencySet specified in the 3GPP specification). For simplicity, the parameter is referred to as the granularity indication hereinafter.

[0052] In some embodiments, when the value of the granularity indication is set to a first value (e.g., "timeFrequencySet ='set0'" specified in the 3GPP specification), symbol group #A can be divided into a first number of consecutive symbol groups (e.g., 14 groups). Each bit in the field in DCI format 2_1 (e.g., the field of the preemption indication) can correspond to one of the 14 symbol groups. For example, 14 bits starting from the most significant bit (MSB) of the field have a one-to-one mapping with the 14 symbol groups, where each of the first symbol groups contains symbols, and each of the last symbol groups contains symbols. The bit value "0" can indicate transmission to the UE in the corresponding symbol group, and the bit value "1" can indicate no transmission to the UE in the corresponding symbol group; or vice versa.

[0053] In some embodiments, when the value of the granularity indication is set to a second value (e.g., "timeFrequencySet ='set1'" specified in the 3GPP specification), symbol group #A can be divided into a second number of consecutive symbol groups (e.g., 7 groups). Each part of the bits in the field in DCI format 2_1 (e.g., the field of the preemption indication) can correspond to one of the 7 symbol groups. For example, 7 pairs of bits starting from the MSB of the field have a one-to-one mapping with the 7 symbol groups, where each of the first symbol groups contains symbols, and each of the last symbol groups contains symbols. The first bit of a pair of bits of a symbol group applies to the first INT symbols from RB#A (which contains B a subset of RBs, and the second bit in the pair of bits of the symbol group is applicable to the last subset of RBs. A bit value of "0" may indicate transmission to the UE in the corresponding symbol group and RB subset, and a bit value of "1" may indicate no transmission to the UE in the corresponding symbol group and RB subset; or vice versa.

[0054] Figure 2 Illustrate exemplary DL inter-UE multiplexing according to some embodiments of the present disclosure. For simplicity, assume that in the context of the present disclosure, a time slot contains 14 symbols.

[0055] In Figure 2 the example of, assume symbols, which are symbols 0 to 13 of time slot #n, as Figure 2 shown. Additionally, according to the time slot format configuration, the last 3 symbols of time slot #n are uplink symbols. Thus, in Figure 2 the example of, symbol group #A contains N INT = 11 symbols, i.e., symbols 0 to 10 of time slot #n.

[0056] Assume that UE#A1 will receive eMBB services from the BS and UE#A2 will receive URLLC services. As Figure 2 shown, the URLLC service occupies a portion (e.g., several symbols) of the resources of the eMBB service. The BS may transmit DCI to UE#A1 indicating the pre-empted resources occupied by the URLLC service. The DCI may be transmitted in a time slot after time slot #n.

[0057] In some embodiments, when the granularity indication is set to a first value (e.g., "timeFrequencySet ='set0'"), 14 bits starting from the MSB of the field in the DCI have a one-to-one mapping with 14 consecutive symbol groups from symbol group #A, where each of the first 11 symbol groups contains 1 symbol and each of the last 3 symbol groups contains 0 symbols. In Figure 2 the example shown, the field in the DCI may indicate "11001100011111", where a bit value of "0" indicates transmission to UE#A1 in the corresponding symbol group and a bit value of "1" indicates no transmission to UE#A1 in the corresponding symbol group.

[0058] In some embodiments, when the granularity indication is set to a second value (e.g., "timeFrequencySet = 'set1'"), the 7 pairs of bits starting from the MSB of the field in the DCI have a one-to-one mapping with 7 consecutive symbol groups from symbol group #A, where each of the first 4 symbol groups includes 2 symbols and each of the last 3 symbol groups includes 1 symbol. The first bit of the pair of bits of the symbol group applies to the 7 consecutive symbol groups from RB group #A (which includes RB group #B). INT RB) before RBs, and the second bit of the pair of bits of the symbol group applies to the last A subset of RBs. Figure 2 In the example shown in , the field in the DCI may indicate "11 00 11 00 0011 11", where the bit value "0" indicates transmission to UE#A1 in the corresponding symbol group and RB subset, and the bit value "1" indicates no transmission to UE#A1 in the corresponding symbol group and RB subset.

[0059] UL inter-UE multiplexing

[0060] In some embodiments of the present disclosure, a base station may notify a UE (e.g., UE#B1) to cancel UL transmission in RBs (e.g., PRBs) and symbols indicated by a specific DCI format (referred to as DCI format 2_4) from a cancellation indication region. For clarity, in the context of the present disclosure, this indication may also be referred to as a cancellation indication.

[0061] In some examples, the cancellation indication region may be determined based on higher layer parameters.For simplicity, the RBs and symbols of a region are referred to as RB group #B and symbol group #B, respectively.

[0062] For example, a higher layer parameter (e.g., timeFrequencyRegion specified in the 3GPP specification) may indicate RB group #B (e.g., via frequencyRegionforCI in timeFrequencyRegion, as specified in the 3GPP specification). Symbol group #B may be determined by excluding symbols (if any) used for reception of SS / PBCH blocks and DL symbols indicated by a slot format configuration (e.g., tdd-UL-DL-ConfigurationCommon) from symbols provided by a higher layer parameter (e.g., via timeDurationforCI in timeFrequencyRegion, as specified in the 3GPP specification). In some other examples, symbol group #B may be related (e.g., equal) to PDCCH monitoring periodicity. For example, symbol group #B may be determined by excluding symbols (if any) used for reception of SS / PBCH blocks and DL symbols indicated by a slot format configuration (e.g., tdd-UL-DL-ConfigurationCommon) from PDCCH monitoring periodicity.

[0063] In some embodiments, the cancellation indication area may be partitioned into a "grid" in the frequency domain and the time domain, and the cancellation indication in DCI format 2_4 may indicate whether UL transmissions in each of a plurality of blocks in the "grid" should be cancelled. For example, a bit value of "0" may indicate that UL transmissions to the BS in the corresponding block (if any) should not be cancelled, and a bit value of "1" may indicate that UL transmissions to the BS in the corresponding block should be cancelled; or vice versa.

[0064] For example, when the UE is provided with an uplink cancellation parameter (e.g., UplinkCancellation specified in the 3GPP specification), the UE is provided in one or more serving cells with a search space set for monitoring a first PDCCH candidate (e.g., having a specific control channel element (CCE) aggregation level (e.g., L CI CCEs) specified in the 3GPP specification) of each search space set for detecting DCI format 2_4 with a cancellation indication (CI) radio network temporary identifier (RNTI) (CI-RNTI).

[0065] The uplink cancellation parameter (e.g., UplinkCancellation) may additionally provide one or more of the following to the UE:

[0066] - A set of serving cells (e.g., ci-ConfigurationPerServingCell specified in the 3GPP specification), which includes a set of serving cell indexes and a set of corresponding positions for the fields in DCI format 2_4 (e.g., positionInDCI specified in the 3GPP specification);

[0067] - In the case where the serving cell is configured with a supplementary UL (SUL) carrier, several fields for the SUL carrier for each serving cell in DCI format 2_4 (e.g., positionInDCI-

[0068] forSUL)

[0069] - The information payload size of DCI format 2_4 (e.g., dci-

[0070] PayloadSize-ForCI); and

[0071] - Time-frequency resource indication (e.g., timeFrequencyRegion specified in the 3GPP specification).

[0072] For a serving cell having an associated field in DCI format 2_4, for the fields represented by the following

[0073] - N CI , which represents the number of bits of the cancellation indication in the DCI format (e.g., it can be provided by ci-PayloadSize specified in the 3GPP specification)

[0074] - B CI , which represents the number of RBs (e.g., it can be provided by frequencyRegionforCI in timeFrequencyRegion specified in the 3GPP specification)

[0075] - T CI , which represents the number of symbols, and the symbols used for receiving the SS / PBCH block and DL symbols indicated by the slot format configuration (e.g., tdd-UL-DL-

[0076] ConfigurationCommon) are excluded from several symbols, and the several symbols

[0077] - In the case where the PDCCH monitoring periodicity in the search space set with DCI format 2_4 is one time slot and there are more than one PDCCH monitoring occasions in the time slot, it is provided by a higher layer parameter (e.g., timeDurationforCI in timeFrequencyRegion specified in the 3GPP specification), or

[0078] - Otherwise, it is equal to the PDCCH monitoring periodicity.

[0079] - G CI , which represents the number of partitions of T CI symbols (e.g., it can be provided by timeGranularityforCI in timeFrequencyRegion specified in the 3GPP specification)

[0080] From the MSB of N CI bits, the G CI groups of bits (e.g., cancellation indication) have a one-to-one mapping with G CI symbol groups, where each of the first groups contains symbols, and each of the remaining groups contains symbols. The UE determines the symbol duration of the SCS configuration for the active DL BWP, where the UE monitors the PDCCH for DCI format 2_4 detection.

[0081] For a group of symbols, from the MSB of each group of bits, N BI = N CI / G CI bits have a one-to-one mapping with N BI RB groups, where each of the first groups contains RBs, and each of the remaining groups contains RBs. The UE determines the first RB index as start and the number of consecutive RBs as B RB = L from the higher layer parameters indicating the offset RB carrier and the length L as the resource indication value (RIV) (e.g., frequencyRegionforCI specified in the 3GPP specification) and from the higher layer parameter indicating the offset O CI of the SCS configuration of the active DL BWP (e.g., offsetToCarrier in FrequencyInfoUL-SIB or FrequencyInfoUL specified in the 3GPP specification).RB , where the UE monitors the PDCCH for DCI format 2_4 detection.

[0082] The indication of DCI format 2_4 for the serving cell can apply to physical uplink shared channel (PUSCH) transmission or sounding reference signal (SRS) transmission on the serving cell. In some instances, when PUSCH transmission or SRS transmission is scheduled by DCI format, the indication of DCI format 2_4 applies to PUSCH transmission or SRS transmission only if the last symbol of the PDCCH reception providing the DCI format is earlier than the first symbol of the PDCCH reception providing DCI format 2_4.

[0083] For the serving cell, the UE determines the first symbol among T CI symbols as the first symbol after T' proc,2 starting from the end of the PDCCH reception in which the UE detects DCI format 2_4. The definition of T' proc,2 can be found in the 3GPP specifications. For example, T' proc,2 is obtained from T of the PUSCH processing capability 2, assuming proc,2 where d is provided by delta_Offset, and μ is the minimum SCS configuration between the SCS configuration of the PDCCH and the minimum SCS configuration μ offset set in the scs-SpecificCarrierList of FrequencyInfoUL or FrequencyInfoUL-SIB. In some instances, the UE does not want to cancel the PUSCH transmission or SRS transmission before the corresponding symbol for T UL , assuming d proc,2 = 0 after the last symbol of the PDCCH reception in which the UE detects DCI format 2_4. 2,1 = 0.

[0084] The UE detecting DCI format 2_4 of the serving cell can cancel the UL transmission. For example, if any of the following occurs, the PUSCH transmission on the serving cell or the actual repetition of the PUSCH transmission when the PUSCH transmission has repetition type B or the SRS transmission can be cancelled,

[0085] - The transmission is a PUSCH with priority 0, if the UE is provided with an uplink cancellation priority (e.g., via uplinkCancellationPriority specified in the 3GPP specifications),

[0086] - A group of symbols from T CI symbols corresponds to a set of N BIsymbols having at least one bit value "1" in the ones bit and containing a PUSCH transmission (a repetition of a PUSCH transmission) or an SRS transmission, and

[0087] -From B CI A group of RBs has a corresponding bit value of "1" in a set of bits corresponding to a symbol group in DCI format 2_4 and includes RBs for PUSCH transmission (repetition of PUSCH transmission) or SRS transmission, wherein

[0088] - Cancellation of PUSCH transmission (repetition of PUSCH transmission) includes all symbols from the earliest symbol of PUSCH transmission (repetition of PUSCH transmission) in the symbol group having the corresponding bit value "1" in DCI format 2_4;

[0089] - Cancellation of SRS transmission only includes symbols in one or more symbol groups having corresponding bit value "1" in DCI format 2_4.

[0090] In some instances, when the UE cancels PUSCH transmission or SRS transmission based on an indication of DCI format 2_4, the UE does not want to be scheduled by the second DCI format to transmit PUSCH or SRS through symbols including symbols of the canceled PUSCH transmission or SRS transmission, where the last symbol received by the PDCCH providing the second DCI format is no earlier than the first symbol received by the PDCCH providing DCI format 2_4.

[0091] As previously mentioned, in order to achieve superior data rates and reduce latency in wireless systems (such as 5G systems), spectrum in higher frequency bands is inevitable. However, a major issue is how to overcome the reduced coverage on such carriers. To address this issue, a duplexing scheme that uses non-overlapping frequency resources on the BS side to achieve simultaneous use of downlink and uplink within a TDD carrier (which may be referred to as "sub-band non-overlapping full-duplex (SBFD)") can be adopted. A subband may refer to the bandwidth part (BWP) of a UE's serving cell or a portion of the BWP of a UE's serving cell. In some instances, the BS may simultaneously perform downlink and uplink transmissions (e.g., on different UEs) in SBFD symbols or time slots.

[0092] In a system adopting the SBFD scheme, there can be four symbol formats. The four symbol formats include DL, flexible, SBFD, and UL. For example, a DL or UL symbol can mean that the transmission direction on this symbol is DL or UL. For example, a flexible symbol can mean that the UE cannot make any assumption about the transmission direction of this symbol. For example, an SBFD symbol can mean that this symbol can support simultaneous DL and UL transmissions on the BS side. For example, a symbol being SBFD can mean that the symbol is indicated as DL with a UL frequency region or UL sub-band; the symbol is indicated as flexible with a UL frequency region or UL sub-band; or the symbol is indicated as flexible and DL reception and UL reception are configured to be performed simultaneously in the symbol (e.g., configured by the BS for the UE). For example, an SBFD symbol can include UL frequency domain resources or UL sub-bands and is initially indicated or configured as downlink or flexible by a higher layer from the BS or a slot format indicator (SFI) (e.g., there can be at least two sub-bands or frequency domain regions with different transmission directions in this symbol). For example, the BS can perform DL transmission and UL reception simultaneously in an SBFD symbol, while the UE can only perform DL reception or UL transmission. For example, an SBFD symbol can be configured with UL sub-bands, DL sub-bands, flexible sub-bands, or any combination thereof. For example, an SBFD symbol can include a UL sub-band configuration (e.g., Figure 3 the UL sub-band 301 in

[0093] It should be noted that another name can be used to represent the SBFD symbol described above, such as a symbol with UL frequency domain resources / regions or a symbol with UL sub-bands. In the context of the present disclosure, a non-SBFD symbol can refer to a DL, flexible, or UL symbol. In some instances, a DL, flexible, or UL symbol can mean a DL, flexible, or UL symbol without SBFD.

[0094] The definitions of the four symbol types can also be applied to time slots. That is, a time slot can be a DL, flexible, SBFD, or UL time slot. For example, a DL or UL time slot can mean that the transmission direction on this time slot is DL or UL. For example, a flexible time slot can mean that the UE cannot make any assumption about the transmission direction of this time slot. For example, an SBFD time slot can refer to a time slot in which all symbols are SBFD symbols.

[0095] Figure 3 Describe an exemplary SBFD scheme according to some embodiments of the present disclosure.

[0096] Refer to Figure 3, the UE may determine the slot format (a) of slot #n according to, for example, a higher layer configuration (such as a cell common UL / DL configuration or a UE-specific UL / DL configuration) or an SFI. The UE may further receive signaling (such as a higher layer configuration or an SFI), which may indicate at least one DL symbol, at least one flexible symbol, at least one DL slot, at least one flexible slot, or any combination thereof as subband full duplex or subband non-overlapping full duplex. For example, the UE may receive signaling indicating the frequency domain resources and time domain resources of a UL subband for SBFD or a UL frequency region, which may cover DL symbols, flexible symbols, or both. For example, the UE may be configured with a UL subband 301 and determine the slot format (b) of slot #n, as Figure 3 shown.

[0097] Figure 4 illustrates an exemplary SBFD scheme according to some embodiments of the present disclosure. In Figure 4 , the UE may be configured with a UL subband 401. The UE may determine the slot format of slot #n, as Figure 4 shown, that is, all symbols in slot #n are SBFD symbols.

[0098] As Figure 4 shown, the URLLC service occupies a part of the resources of the eMBB service. Assume that the area defined by symbol group #A and RB group #A corresponds to the area 400 in Figure 4 . Therefore, the preemption indication area includes the UL subband 401 and the DL subband 404 in Figure 4 . Symbol group #A includes symbols 0 to 13 of slot #n. Line 403 may divide RB group #A approximately equally in the frequency domain. For example, the difference between the number of RBs above line 403 in area 400 and the number of RBs below line 403 in area 400 is equal to 0 or 1 (such as +1 or -1).

[0099] The UE may receive a DCI containing a preemption indication corresponding to area 400. Further assume that the value of the granularity indication is set to a second value. Then, the 7-bit (e.g., starting from the MSB) preemption indication field in the DCI format may have a one-to-one mapping with 7 groups of symbols of 14 symbols in slot #n, where each group of symbols contains 2 symbols. For example, the 7 groups of symbols may be {symbol 0, symbol 1}, {symbol 2, symbol 3}, {symbol 4, symbol 5}, {symbol 6, symbol 7}, {symbol 8, symbol 9}, {symbol 10, symbol 11}, and {symbol 12, symbol 13}. The first bit in a pair of bits of a symbol group applies to a subset of the first RBs from RB group #A (such as the RBs above line 403 in area 400), and the second bit in the pair of bits of the symbol group applies to the last a subset of RBs (e.g., the RBs below the online 403 in the region 400).

[0100] In Figure 4 example, the DCI may indicate "11 01 11 01 11 11 11", where the bit value "0" indicates the transmission to the UE in the corresponding symbol group and the RB subset, and the bit value "1" indicates that there is no transmission to the UE in the corresponding symbol group and the RB subset.

[0101] It can be seen that due to the UL sub-band 401, 7 bits (the second bit in each pair of bits) are wasted. This is because the UL sub-band 401 cannot be used for DL data transmission anyway. Therefore, the indication of occupied resources is not very accurate. In addition, in Figure 4 example, some resources (e.g., the region 402) are not occupied by the URLLC service and are not indicated as not being used by the eMBB service. If the URLLC resources can be indicated more accurately, then more bits of the eMBB can be used for decoding, so that the eMBB will be correctly decoded and then there is no need for retransmission, which will improve the resource utilization rate. Therefore, in order to improve the resource utilization rate, a more accurate indication is desired.

[0102] For the UL cancellation indication or when the value of the granularity indication of the preemption indication is set to other values, the same or similar problems exist. For example, for the UL, some RBs in the cancellation indication area may be in the DL sub-band (or in other words, not in the UL sub-band), and therefore cannot be used for UL transmission anyway. Therefore, indicating all resources in the cancellation indication area will be inefficient. A more accurate indication is desired.

[0103] Embodiments of the present disclosure provide an enhanced solution for resource indication when supporting SBFD. The proposed solution can solve at least the above problems and can improve the indication accuracy and resource utilization rate. More details about the embodiments of the present disclosure will be described below in conjunction with the accompanying drawings.

[0104] Figure 5 A flowchart illustrating an exemplary procedure 500 for resource indication in an SBFD scenario according to some embodiments of the present disclosure. The procedure 500 may be implemented by a UE (e.g., Figure 1 the UE 101 shown in). The details described in all the foregoing embodiments of the present disclosure are applicable to Figure 5 the embodiments shown in.

[0105] Referring to Figure 5 , in operation 511, the UE may determine a reference region, where D includes a set of RBs in the frequency domain and a set of symbols in the time domain. In some embodiments of the present disclosure, the set of symbols may include at least one SBFD symbol. In some embodiments of the present disclosure, the set of symbols may include at least one SBFD time slot.

[0106] In operation 513, the UE may receive DCI indicating whether one or more RBs and one or more symbols in a resource (denoted as resource #C) are used for DL reception or whether one or more RBs and one or more symbols in the resource are used for UL transmission, wherein the RBs in the frequency domain of the resource are determined based on a reference region.

[0107] In some embodiments of the present disclosure, resource #C may include the set of symbols in the time domain. For example, the symbols in the time domain of resource #C are the set of symbols.

[0108] For example, the reference region may be the preemption indication region described above. The RB group and symbol group may be RB group #A and symbol group #A, as described above. The DCI may be DCI format 2_1, as described above. Resource #C may include symbol group #A in the time domain.

[0109] For example, the reference region may be the cancellation indication region described above. The RB group and symbol group may be RB group #B and symbol group #B, as described above. The DCI may be DCI format 2_4, as described above. Resource #C may include symbol group #B in the time domain.

[0110] Various methods may be used to determine the RBs in the frequency domain of resource #C based on the reference region (eg, based on the frequency domain and time domain of the reference region).

[0111] In some embodiments of the present disclosure, DCI indicates whether one or more RBs and one or more symbols are used for DL reception (e.g., the UE receives DCI format 2_1), and the RBs in the frequency domain of resource #C can be determined by removing RBs in the UL subband from an RB group (e.g., RB group #A). In some embodiments of the present disclosure, DCI indicates whether one or more RBs and one or more symbols are used for UL transmission (e.g., the UE receives DCI format 2_4), and the RBs in the frequency domain of resource #C can be determined by removing RBs not in the UL subband (e.g., RBs in the DL subband) from an RB group (e.g., RB group #B).

[0112] For example, in some embodiments of the present disclosure, when all symbols in the reference zone are SBFD symbols, the RBs in the frequency domain of resource #C are determined by removing RBs in the UL subband from the RB group (e.g., RB group #A) or by removing RBs that are not in the UL subband (e.g., RBs in the DL subband) from the RB group (e.g., RB group #B).

[0113] For example, when the DCI indicates whether one or more RBs and one or more symbols are used for DL reception (e.g., the UE receives DCI format 2_1), the RBs in the frequency domain of resource #C are determined by removing the RBs in the UL subband from RB group #A in response to all symbols in the reference region (e.g., the preemption indication region) being SBFD symbols.

[0114] For example, when the DCI indicates whether one or more RBs and one or more symbols are used for UL transmission (e.g., the UE receives DCI format 2_4), the RBs in the frequency domain of resource #C can be determined by removing the RBs not in the UL subband (e.g., the RBs in the DL subband) from RB group #B in response to all symbols in the reference region (e.g., the cancellation indication region) being SBFD symbols.

[0115] For example, in some embodiments of the present disclosure, when all time slots in the reference region are SBFD time slots, the RBs in the frequency domain of resource #C are determined by removing the RBs in the UL subband from an RB group (e.g., RB group #A) or by removing the RBs not in the UL subband (e.g., the RBs in the DL subband) from an RB group (e.g., RB group #B).

[0116] In some embodiments of the present disclosure, in the case where at least one symbol in the reference region is not an SBFD symbol, the RBs in the frequency domain of resource #C are equal to the RB group. In some embodiments of the present disclosure, in the case where at least one time slot in the reference region is not an SBFD time slot, the RBs in the frequency domain of resource #C are equal to the RB group.

[0117] For example, when the DCI indicates whether one or more RBs and one or more symbols are used for DL reception (e.g., the UE receives DCI format 2_1), the RBs in the frequency domain of resource #C are equal to RB group #A in response to at least one symbol in the reference region (e.g., the preemption indication region) not being an SBFD symbol.

[0118] For example, when the DCI indicates whether one or more RBs and one or more symbols are used for UL transmission (e.g., the UE receives DCI format 2_4), the RBs in the frequency domain of resource #C are equal to RB group #B in response to at least one symbol in the reference region (e.g., the cancellation indication region) not being an SBFD symbol.

[0119] For example, refer to Figure 6 , the UE may receive DCI (e.g., DCI format 2_1) indicating whether one or more RBs and one or more symbols are used for DL reception. The reference region 600 may include two time slots in the time domain (e.g., Figure 6 time slot #n and time slot #n + 1 in Figure 6As shown, UL sub - band 601 is configured in time slot #n, and thus, symbols 0 to 13 of time slot #n are SBFD symbols and time slot #n is a SBFD time slot. However, none of symbols 0 to 13 of time slot #n + 1 are SBFD symbols. Therefore, not all symbols in reference region 600 are SBFD symbols (or not all time slots in reference region 600 are SBFD time slots). Thus, according to the above - mentioned embodiments, the RBs in the frequency domain of resource #C are equal to the RBs of reference region 600. Therefore, resource #C is the same as reference region 600.

[0120] For example, referring Figure 4 , reference region 400 may include one time slot in the time domain (e.g., time slot #n in Figure 4 ), and includes DL sub - band 404 and UL sub - band 401. Therefore, all symbols in reference region 400 are SBFD symbols. Thus, according to the above - mentioned embodiments, the RBs in the frequency domain of resource #C are equal to the RBs of DL sub - band 404. The symbols in the time domain of resource #C include symbols 0 to 13 of time slot #n.

[0121] For example, referring Figure 7 , the UE may receive DCI (e.g., DCI format 2_1) indicating whether one or more RBs and one or more symbols are used for DL reception. Reference region 700 may include one time slot in the time domain (e.g., time slot #n in Figure 7 ). As shown in Figure 7 , no UL sub - band is configured in time slot #n, and thus, none of symbols 0 to 13 in reference region 700 are SBFD symbols. Thus, according to the above - mentioned embodiments, the RBs in the frequency domain of resource #C are equal to the RBs of reference region 700. Therefore, resource #C is the same as reference region 700.

[0122] Returning to refer Figure 5 , in some embodiments of the present disclosure, symbol groups are divided into at least one symbol group in the time domain. For each of the at least one symbol group, when all symbols in the symbol group are SBFD symbols, the RBs in the frequency domain of resource #C in the symbol group are determined by removing the RBs in the UL sub - band from an RB group (e.g., RB group #A) or by removing the RBs not in the UL sub - band (e.g., RBs in the DL sub - band) from an RB group (e.g., RB group #B).

[0123] For example, when the DCI indicates whether one or more RBs and one or more symbols are used for DL reception (e.g., the UE receives DCI format 2_1), symbol group #A can be divided into at least one symbol group in the time domain (e.g., 14 or 7 symbol groups). For each symbol group, the RBs in the frequency domain of resource #C in the symbol group are determined by removing the RBs in the UL subband from RB group #A in response to all symbols in the symbol group being SBFD symbols.

[0124] For example, when the DCI indicates whether one or more RBs and one or more symbols are used for UL transmission (e.g., the UE receives DCI format 2_4), symbol group #B can be divided into at least one symbol group in the time domain (e.g., G CI symbol groups). For each symbol group, the RBs in the frequency domain of resource #C are determined by removing the RBs not in the UL subband (e.g., the RBs in the DL subband) from RB group #B in response to all symbols in the symbol group being SBFD symbols.

[0125] In some embodiments of the present disclosure, the symbol group is divided into at least one symbol group in the time domain. For each of the at least one symbol groups, in the case where at least one symbol in the symbol group is not an SBFD symbol, the RBs in the frequency domain of resource #C in the symbol group are equal to the RB group.

[0126] For example, when the DCI indicates whether one or more RBs and one or more symbols are used for DL reception (e.g., the UE receives DCI format 2_1), symbol group #A can be divided into at least one symbol group in the time domain (e.g., 14 or 7 symbol groups). For each symbol group, the RBs in the frequency domain of resource #C in the symbol group are equal to RB group #A in response to at least one symbol in the symbol group not being an SBFD symbol.

[0127] For example, when the DCI indicates whether one or more RBs and one or more symbols are used for UL transmission (e.g., the UE receives DCI format 2_4), symbol group #B can be divided into at least one symbol group in the time domain (e.g., G CI symbol groups). For each symbol group, the RBs in the frequency domain of resource #C in the symbol group are equal to RB group #B in response to at least one symbol in the symbol group not being an SBFD symbol.

[0128] For example, referring to Figure 6 , the reference area 600 may include two time slots in the time domain (e.g., Figure 6in time slots #n and #n+1). Assume that the value of the preemption indication granularity is set to a first value. Thus, according to the above embodiments, the symbols in the reference region 600 can be divided into 14 symbol groups. The 14 symbol groups are {symbol 0 of time slot #n, symbol 1 of time slot #n}, {symbol 2 of time slot #n, symbol 3 of time slot #n}, {symbol 4 of time slot #n, symbol 5 of time slot #n}, {symbol 6 of time slot #n, symbol 7 of time slot #n}, {symbol 8 of time slot #n, symbol 9 of time slot #n}, {symbol 10 of time slot #n, symbol 11 of time slot #n}, {symbol 12 of time slot #n, symbol 13 of time slot #n}, {symbol 0 of time slot #n+1, symbol 1 of time slot #n+1}, {symbol 2 of time slot #n+1, symbol 3 of time slot #n+1}, {symbol 4 of time slot #n+1, symbol 5 of time slot #n+1}, {symbol 6 of time slot #n+1, symbol 7 of time slot #n+1}, {symbol 8 of time slot #n+ / , symbol 9 of time slot #n+1}, {symbol 10 of time slot #n+1, symbol 11 of time slot #n+1} and {symbol 12 of time slot #n+1, symbol 13 of time slot #n+1}, which are indexed as symbol groups #0 to #13 for clarity.

[0129] Since the UL sub-band 601 is configured in time slot #n, the RBs in the frequency domain of resource #C in symbol groups #0 to #6 are determined by removing the RBs in the UL sub-band 601 from the RBs in the reference region 600. Since the UL sub-band 601 is configured in time slot #n, the RBs in the frequency domain of resource #C in symbol groups #0 to #6 are determined by removing the RBs in the UL sub-band 601 from the RBs in the reference region 600. The RBs in the frequency domain of resource #C in symbol groups #7 to #13 are equal to the RBs in the reference region 600. The DCI indicates resource occupancy based on resource #C.

[0130] Return to reference Figure 5 , in some embodiments of the present disclosure, the number of RBs removed as described above (e.g., removed from RB group #A to removed from RB group #B) can be determined based on the SCS configuration of DL reception or UL transmission and the SCS configuration of the UL sub-band. The relationship between the value of the SCS configuration and the SCS can be found in the 3GPP specifications. For example, the values of the SCS configuration μ = {0, 1, 2, 3, 4, 5, 6} can indicate SCSs of {15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz}, respectively.

[0131] For example, as described above, when the DCI indicates whether one or more RBs and one or more symbols are used for DL reception (e.g., the UE receives DCI format 2_1), the RBs in the frequency domain of resource #C can be determined by removing the RBs in the UL subband from RB group #A. In some instances, RB group #A can be the active DL BWP, which contains X RBs. Assume that μ is the SCS configuration of the active DL BWP (i.e., the SCS configuration for DL reception), μ1 is the SCS configuration of the UL subband, and the UL subband (e.g., which overlaps with the reference region) contains Y RBs. Then the number of removed RBs can be equal to Therefore, the resulting number of RBs can be X - In some instances, the UE does not desire that the provided values of μ, μ1, and Y result in a non-integer value.

[0132] For example, as described above, when the DCI indicates whether one or more RBs and one or more symbols are used for UL transmission (e.g., the UE receives DCI format 2_4), the RBs in the frequency domain of resource #C can be determined by removing the RBs not in the UL subband (e.g., the RBs in the DL subband) from RB group #. In some instances, RB group #B can contain B CI RBs. (e.g., provided by the frequencyRegionforCI in the timeFrequencyRegion specified in the 3GPP specification). Assume that μ' is the SCS configuration for UL transmission, μ1 is the SCS configuration of the UL subband, and the RBs not in the UL subband (e.g., or the DL subband overlapping with the reference region) contain Y' RBs. Then the number of removed RBs can be equal to Therefore, the resulting number of RBs can be In some instances, the UE does not desire that the provided values of μ', μ1, and Y' result in a non-integer value.

[0133] In some embodiments of the present disclosure, there can be a guard band between the UL subband and the DL subband. From the UE's perspective, the guard band can be not used for UL transmission or DL reception. From the BS's perspective, the guard band can be not used for DL transmission to the UE or UL reception from the UE. For example, Figure 4 region 400 in can contain a guard band inserted between UL subband 401 and DL subband 404. For example, the guard band can occupy the same symbols in the time domain as UL subband 401.

[0134] The above description regarding RB removal can also be applicable to the guard band. For example, the UE can additionally remove the RBs in the guard band from the RB group (e.g., RB group #A or RB group #B).

[0135] For example, in some embodiments of the present disclosure, the DCI may indicate whether one or more RBs and one or more symbols are used for DL reception (e.g., the UE receives DCI format 2_1), and the RBs in the frequency domain of resource #C are determined by removing the RBs in the guard band from an RB group (e.g., RB group #A). In some embodiments of the present disclosure, the DCI indicates whether one or more RBs and one or more symbols are used for UL transmission (e.g., the UE receives DCI format 2_4), and the RBs in the frequency domain of resource #C are determined by removing the RBs in the guard band from an RB group (e.g., RB group #B). The guard band is inserted between the UL sub-band and the DL sub-band in the reference region.

[0136] For example, in some embodiments of the present disclosure, when all the symbols in the reference region are SBFD symbols, the RBs in the frequency domain of resource #C are determined by removing the RBs in the guard band from an RB group (e.g., RB group #A or RB group #B). For example, in some embodiments of the present disclosure, when all the time slots in the reference region are SBFD time slots, the RBs in the frequency domain of resource #C are determined by removing the RBs in the guard band from an RB group (e.g., RB group #A or RB group #B).

[0137] For example, in some embodiments of the present disclosure, the symbol group is divided into at least one symbol group in the time domain. For each of the at least one symbol groups, in the case where all the symbols in the symbol group are SBFD symbols, the RBs in the frequency domain of resource #C in the symbol group are determined by removing the RBs in the guard band from an RB group (e.g., RB group #A or RB group #B).

[0138] In some embodiments of the present disclosure, the UE may receive an indication indicating another RB group (denoted as RB group #D). Depending on the symbol group (e.g., symbol group #A or symbol group #B) in the reference region, the RBs in the frequency domain of resource #C may be equal to RB group #D or an RB group (e.g., RB group #A or RB group #B).

[0139] For example, in some embodiments of the present disclosure, when all the symbols in the reference region are SBFD symbols, the RBs in the frequency domain of resource #C are equal to RB group #D; otherwise, the RBs in the frequency domain of resource #C are equal to an RB group (e.g., RB group #A or RB group #B).

[0140] For example, in some embodiments of the present disclosure, when all the time slots in the reference region are SBFD time slots, the RBs in the frequency domain of resource #C are equal to RB group #D; otherwise, the RBs in the frequency domain of resource #C are equal to an RB group (e.g., RB group #A or RB group #B).

[0141] For example, refer to Figure 6, the reference region 600 may include two time slots in the time domain (e.g. Figure 6 Time slot #n and time slot #n+1 in the . Figure 6 As shown in FIG, symbols 0 to 13 of slot #n are SBFD symbols, and symbols 0 to 13 of slot #n+1 are not SBFD symbols. Therefore, according to the above embodiment, resource #C is the same as reference region 600.

[0142] For example, refer to Figure 4 , the reference region 400 may include a time slot in the time domain (e.g. Figure 4 4) and includes DL subband 404 and UL subband 401. All symbols in reference region 400 are SBFD symbols. Therefore, according to the above embodiment, the RBs in the frequency domain of resource #C are equal to RB group #D. The symbols in the time domain of resource #C include symbols 0 to 13 of time slot #n.

[0143] For example, refer to Figure 7 , the reference region 700 may include a time slot in the time domain (e.g. Figure 7 Time slot #n in ). Figure 7 As shown in FIG, no UL subband is configured in time slot #n. Therefore, according to the above embodiment, the RBs in the frequency domain of resource #C are equal to the RBs (e.g., RB group #A) in reference zone 600. The symbols in the time domain of resource #C include symbols 0 to 13 of time slot #n.

[0144] Return Reference Figure 5 In some embodiments of the present disclosure, a symbol group is divided into at least one symbol group. For each of the at least one symbol group, if all symbols in the symbol group are SBFD symbols, the RBs in the frequency domain of resource #C in the symbol group are equal to RB group #D; otherwise, the RBs in the frequency domain of resource #C in the symbol group are equal to the RB group (e.g., RB group #A or RB group #B).

[0145] For example, refer to Figure 6 , the reference region 600 may include two time slots in the time domain (e.g. Figure 6in time slots #n and #n+1). Assume that the value of the preemption indication granularity is set to a first value. Thus, according to the above embodiments, the symbols in the reference region 600 can be divided into 14 symbol groups. The 14 symbol groups are {symbol 0 of time slot #n, symbol 1 of time slot #n}, {symbol 2 of time slot #n, symbol 3 of time slot #n}, {symbol 4 of time slot #n, symbol 5 of time slot #n}, {symbol 6 of time slot #n, symbol 7 of time slot #n}, {symbol 8 of time slot #n, symbol 9 of time slot #n}, {symbol 10 of time slot #n, symbol 11 of time slot #n}, {symbol 12 of time slot #n, symbol 13 of time slot #n}, {symbol 0 of time slot #n+1, symbol 1 of time slot #n+1}, {symbol 2 of time slot #n+1, symbol 3 of time slot #n+1}, {symbol 4 of time slot #n+1, symbol 5 of time slot #n+1}, {symbol 6 of time slot #n+1, symbol 7 of time slot #n+1}, {symbol 8 of time slot #n+1, symbol 9 of time slot #n+1}, {symbol 10 of time slot #n+1, symbol 11 of time slot #n+1}, and {symbol 12 of time slot #n+1, symbol 13 of time slot #n+1}, which are indexed as symbol groups #0 to #13 for clarity.

[0146] Since the UL sub-band 601 is configured in time slot #n, the RBs in the frequency domain of resource #C in symbol groups #0 to #6 are determined by removing the RBs in the UL sub-band 601 from the RBs in the reference region 600. Since the UL sub-band 601 is configured in time slot #n, the RBs in the frequency domain of resource #C in symbol groups #0 to #6 are equal to RB group #D. The RBs in the frequency domain of resource #C in symbol groups #7 to #13 are equal to the RBs in the reference region 600 (e.g., RB group #A).

[0147] Return reference Figure 5 , in some embodiments of the present disclosure, resource #C may include a symbol group in the time domain. For example, the symbols in the time domain of resource #C are the symbol group (i.e., the symbols in the time domain of the reference region that can be symbol group #A or symbol group #B).

[0148] The DCI indicates resource occupancy based on resource #C.

[0149] For example, in some embodiments of the present disclosure, resource #C is divided into multiple parts in the frequency domain. For example, each of the multiple parts may include substantially the same number of RBs (i.e., evenly divided). For example, the difference in the number of RBs between any two of the multiple parts may not be greater than 1. In some embodiments, resource #C is divided into two parts in the frequency domain. In some embodiments, resource #C is divided into N BI parts.

[0150] The symbol groups are divided into at least one symbol group. The DCI (e.g., the preemption indication field or cancellation indication field in the DCI) includes an indicator for each of at least one symbol group. For example, the indicator can be a pair of bits or a bitmap. In some embodiments, each bit of the indicator indicates whether a corresponding part among a plurality of parts in the symbol group is used for DL reception. In some embodiments, each bit of the indicator indicates whether a corresponding part among a plurality of parts in the symbol group is used for UL transmission.

[0151] For example, referring to Figure 6 , the reference region 600 may include two time slots in the time domain (e.g., Figure 6 the time slots #n and #n + 1 in Figure 6 . The UL sub-band 601 is configured only in the time slot #n. Therefore, symbols 0 to 13 in the time slot #n are SBFD symbols, and none of the symbols 0 to 13 in the time slot #n + 1 are SBFD symbols. According to some embodiments of the present disclosure, since at least one symbol in the reference region 600 is not an SBFD symbol, the RBs in the frequency domain of resource #C are the RBs of the reference region 600. It should be noted that the RBs in the frequency domain of resource #C can be determined according to other methods described above. In

[0152] Assume that the value of the preemption indication granularity is set to a second value. Therefore, the symbols in the reference region 600 (which are also the symbols of resource #C) can be divided into 7 symbol groups. For example, each of the first several symbol groups contains several INT symbols, where N

[0153] = 14 * 2. Therefore, the 7 symbol groups are {symbols 0 to 3 in the time slot #n}, {symbols 4 to 7 in the time slot #n}, {symbols 8 to 11 in the time slot #n}, {symbols 12 and 13 in the time slot #n, symbols 0 and 1 in the time slot #n + 1}, {symbols 2 to 5 in the time slot #n + 1}, {symbols 6 to 9 in the time slot #n + 1}, and {symbols 10 to 13 in the time slot #n + 1}, which are indexed as symbol group #0 to symbol group #6 for clarity. INT several For a subset of RBs (e.g., the RBs in region 600 above line 603), the second bit of the pair of bits of the symbol group is applicable to the RBs from B INT The last of the group of RBs A subset of RBs (e.g., RBs below line 603 in region 600), where B INT = RB number 605.

[0154] For example, the preemption indication field may indicate "01 11 11 11 10 00 11", where a bit value of 0 indicates transmission to the UE in the corresponding symbol group and RB subset, and a bit value of 1 indicates no transmission to the UE in the corresponding symbol group and RB subset.

[0155] For example, refer to Figure 8 , the UE may receive a DCI (e.g., DCI format 2_1) indicating whether one or more RBs and one or more symbols are used for DL reception. The reference region 800 may include a time slot in the time domain (e.g., Figure 8 Time slot #n in ). Figure 8 As shown in FIG, UL subband 801 is configured in slot #n, and therefore, symbols 0 to 13 of slot #n are SBFD symbols and slot #n is an SBFD slot. According to some embodiments of the present disclosure, since all symbols in reference region 800 are SBFD symbols, the RBs in the frequency domain of resource #C are determined by removing the RBs of UL subband 801 from the RBs of reference region 800. It should be noted that the RBs in the frequency domain of resource #C may be determined according to other methods described above. Figure 8 , the number of RBs of resource #C is represented as RB number 805, and line 803 may substantially equally divide the RBs in the frequency domain of resource #C.

[0156] Assume that the value of the preemption indication granularity is set to the second value. Therefore, the symbols of the reference area 800 (which are also the symbols of resource #C) can be divided into 7 symbol groups. For example, Each of the symbol groups contains symbols, and finally Each of the symbol groups contains symbols, where N INT = 14. Therefore, the 7 symbol groups are {symbol 0 of slot #n, symbol 1 of slot #n}, {symbol 2 of slot #n, symbol 3 of slot #n}, {symbol 4 of slot #n, symbol 5 of slot #n}, {symbol 6 of slot #n, symbol 7 of slot #n}, {symbol 8 of slot #n, symbol 9 of slot #n}, {symbol 10 of slot #n, symbol 11 of slot #n}, {symbol 12 of slot #n, symbol 13 of slot #n}, which are indexed as symbol group #0 to symbol group #6 for clarity.

[0157] Next, 7 bits starting from the MSB of the preemption indication field in the DCI (e.g., DCI format 2_1) have a one-to-one mapping with symbol groups #0 to symbol groups #6. For example, the first bit in a pair of bits of a symbol group applies to the first INT subset of the first RB's in a group of B INT RB's (e.g., the RB's above line 803 in resource #C), and the second bit in the pair of bits of the symbol group applies to the last subset of the B INT RB's in a group of RB's (e.g., the RB's below line 803 in resource #C), where B

[0158] = the number of RB's 805.

[0159] Return reference Figure 5 , in some embodiments of the present disclosure, resource #C or the reference area is divided into a first part and a second part in the frequency domain, and the first part and the second part are inserted into the UL subbands. The symbol group is divided into at least one symbol group, and the DCI (e.g., the preemption indication field) includes a pair of bits for each of at least one symbol group, where the first bit in the pair of bits indicates whether the first part in the symbol group is used for DL reception, and the second bit in the pair of bits indicates whether the second part in the symbol group is used for DL reception. In some embodiments of the present disclosure, the first part and the second part are inserted into the UL subbands and the guard bands.

[0160] For example, referring Figure 9 , the UE may receive DCI (e.g., DCI format 2_1) indicating whether one or more RB's and one or more symbols are used for DL reception. The reference area 900 may include one time slot in the time domain (e.g., Figure 9 time slot #n in Figure 9 ). As shown in

[0161] In some embodiments of the present disclosure, it is assumed that the guard band is inserted in Figure 9Between the DL subband and the UL subband 901 in (eg, between the upper DL part and the UL subband 901, between the lower DL part and the UL subband 901, or both), neither the number of RBs 905 nor the number of RBs 907 includes RBs of the guard band.

[0162] Assume that the value of the preemption indication granularity is set to the second value. Therefore, the symbols of the reference area 900 can be divided into 7 symbol groups. For example, Each of the symbol groups contains symbols, and finally Each of the symbol groups contains symbols, where N INT = 14. Therefore, the 7 symbol groups are {symbol 0 of slot #n, symbol 1 of slot #n}, {symbol 2 of slot #n, symbol 3 of slot #n}, {symbol 4 of slot #n, symbol 5 of slot #n}, {symbol 6 of slot #n, symbol 7 of slot #n}, {symbol 8 of slot #n, symbol 9 of slot #n}, {symbol 10 of slot #n, symbol 11 of slot #n}, {symbol 12 of slot #n, symbol 13 of slot #n}, which are indexed as symbol group #0 to symbol group #6 for clarity.

[0163] Then, the 7 pairs of bits starting from the MSB of the preemption indication field in the DCI (e.g., DCI format 2_1) have a one-to-one mapping with symbol group #0 to symbol group #6. For example, the first bit of a pair of bits in a symbol group is applicable to the preemption indication field from B INT A subset of the first M RBs of a group of RBs, and the second bit of the pair of bits of the symbol group is applicable to the first M RBs from B INT A subset of the last N RBs of a group of RBs, where M = the number of RBs 905 and N = the number of RBs 907, and B INT The RB number in the frequency domain of resource #C or the RB number in the frequency domain of reference zone 900 represents the RB number in the frequency domain of resource #C. In some examples, the RBs in the frequency domain of resource #C are equal to the RBs in reference zone 900. In some examples, the RBs in the frequency domain of resource #C are equal to M+N.

[0164] For example, the preemption indication field may indicate "11 01 10 01 11 11 11", where a bit value of 0 indicates transmission to the UE in the corresponding symbol group and RB subset, and a bit value of 1 indicates no transmission to the UE in the corresponding symbol group and RB subset.

[0165] Those skilled in the art will appreciate that the order of the operations in the exemplary process 500 may be changed and some operations in the exemplary process 500 may be removed or modified without departing from the spirit and scope of the present disclosure.

[0166] Fig.10 Flowchart of an exemplary procedure 1000 for resource indication in an SBFD scenario according to some embodiments of the present disclosure. Procedure 1000 may be implemented by a network entity (e.g., Figure 1 BS102 shown in). The details described in all the foregoing embodiments of the present disclosure are applicable to Fig.10 the embodiments shown in.

[0167] Referring to Fig.10 , in operation 1011, the BS may determine a reference region of the UE, where the reference region includes a set of RBs in the frequency domain and a set of symbols in the time domain. In some embodiments of the present disclosure, the set of symbols may include at least one SBFD symbol. In some embodiments of the present disclosure, the set of symbols may include at least one SBFD time slot.

[0168] For example, the reference region may be the preemption indication region described above. The RB set and the symbol set may be RB set #A and symbol set #A as described above. The DCI may be DCI format 2_1 as described above. For example, the reference region may be the cancellation indication region described above. The RB set and the symbol set may be RB set #B and symbol set #B as described above. The DCI may be DCI format 2_4 as described above.

[0169] In operation 1013, the BS may transmit a DCI to the UE, which indicates whether one or more RBs and one or more symbols in the resource are for DL reception or indicates whether one or more RBs and one or more symbols in the resource are for UL transmission, where the RBs in the frequency domain of the resource are determined based on the reference region. The resource may be resource #C as described above.

[0170] In some embodiments of the present disclosure, the DCI indicates whether one or more RBs and one or more symbols are for DL reception (e.g., the BS transmits DCI format 2_1), and the RBs in the frequency domain of the resource are determined by removing the RBs in the UL subband from the RB set (e.g., RB set #A). In some embodiments of the present disclosure, the DCI indicates whether one or more RBs and one or more symbols are for UL transmission (e.g., the BS transmits DCI format 2_4), and the RBs in the frequency domain of the resource are determined by removing the RBs not in the UL subband (e.g., the RBs in the DL subband) from the RB set (e.g., RB set #B).

[0171] In some embodiments of the present disclosure, when all the symbols in the reference region are SBFD symbols, the RBs in the frequency domain of the resource are determined by removing the RBs in the UL subband from the RB set or by removing the RBs not in the UL subband from the RB set.

[0172] In some embodiments of the present disclosure, when all time slots in the reference region are SBFD time slots, the RBs in the frequency domain of the resource are determined by removing the RBs in the UL subband from the RB group or by removing the RBs not in the UL subband (e.g., the RBs in the DL subband) from the RB group.

[0173] In some embodiments of the present disclosure, the symbol group is divided into at least one symbol group in the time domain. For each of the at least one symbol groups, when all symbols in the symbol group are SBFD symbols, the RBs in the frequency domain of the resource in the symbol group are determined by removing the RBs in the UL subband from the RB group or by removing the RBs not in the UL subband from the RB group.

[0174] In some embodiments of the present disclosure, when at least one symbol in the reference region is not an SBFD symbol, the RBs in the frequency domain of the resource are equal to the RB group. In some embodiments of the present disclosure, when at least one time slot in the reference region is not an SBFD time slot, the RBs in the frequency domain of the resource are equal to the RB group.

[0175] In some embodiments of the present disclosure, the symbol group is divided into at least one symbol group in the time domain; and for each of the at least one symbol groups, when at least one symbol in the symbol group is not an SBFD symbol, the RBs in the frequency domain of the resource in the symbol group are equal to the RB group.

[0176] In some embodiments of the present disclosure, the number of removed RBs is determined based on the SCS configuration of DL reception or UL transmission and the SCS configuration of the UL subband.

[0177] In some embodiments of the present disclosure, a guard band may exist between the UL subband and the DL subband. From the perspective of the UE, the guard band may not be used for UL transmission or DL reception. From the perspective of the BS, the guard band may not be used for DL transmission to the UE or UL reception from the UE.

[0178] The above description regarding RB removal is also applicable to the guard band. For example, the BS may additionally remove the RBs in the guard band from the RB group (e.g., RB group #A or RB group #B).

[0179] For example, in some embodiments of the present disclosure, the DCI may indicate whether one or more RBs and one or more symbols are used for DL reception (e.g., the BS transmits DCI format 2_1), and the RBs in the frequency domain of the resource are determined by removing the RBs in the guard band from the RB group (e.g., RB group #A). In some embodiments of the present disclosure, the DCI indicates whether one or more RBs and one or more symbols are used for UL transmission (e.g., the BS transmits DCI format 2_4), and the RBs in the frequency domain of the resource are determined by removing the RBs in the guard band from the RB group (e.g., RB group #B). The guard band is inserted between the UL sub-band and the DL sub-band in the reference region.

[0180] For example, in some embodiments of the present disclosure, when all the symbols in the reference region are SBFD symbols, the RBs in the frequency domain of the resource are determined by removing the RBs in the guard band from the RB group (e.g., RB group #A or RB group #B). For example, in some embodiments of the present disclosure, when all the time slots in the reference region are SBFD time slots, the RBs in the frequency domain of the resource are determined by removing the RBs in the guard band from the RB group (e.g., RB group #A or RB group #B).

[0181] For example, in some embodiments of the present disclosure, the symbol group is divided into at least one symbol group in the time domain. For each of the at least one symbol groups, when all the symbols in the symbol group are SBFD symbols, the RBs in the frequency domain of the resource in the symbol group are determined by removing the RBs in the guard band from the RB group (e.g., RB group #A or RB group #B).

[0182] In some embodiments of the present disclosure, the BS may transmit an indication indicating a second group of RBs (e.g., RB group #D). Depending on the symbol group in the reference region, the RBs in the frequency domain of the resource are equal to the second group of RBs or the RB group.

[0183] In some embodiments of the present disclosure, when all the symbols in the reference region are SBFD symbols, the RBs in the frequency domain of the resource are equal to the second group of RBs; otherwise, the RBs in the frequency domain of the resource are equal to the RB group.

[0184] In some embodiments of the present disclosure, when all the time slots in the reference region are SBFD time slots, the RBs in the frequency domain of the resource are equal to the second group of RBs; otherwise, the RBs in the frequency domain of the resource are equal to the RB group.

[0185] In some embodiments of the present disclosure, the symbol group is divided into at least one symbol group. For each of the at least one symbol groups, when all the symbols in the symbol group are SBFD symbols, the RBs in the frequency domain of the resource in the symbol group are equal to the second group of RBs; otherwise, the RBs in the frequency domain of the resource in the symbol group are equal to the RB group.

[0186] In some embodiments of the present disclosure, the resources include groups of symbols in the time domain.

[0187] In some embodiments of the present disclosure, resources are divided into multiple parts in the frequency domain. A symbol group is divided into at least one symbol group. The DCI includes an indicator for each of the at least one symbol group, and each bit of the indicator indicates whether a corresponding part of the multiple parts in the symbol group is used for DL reception or whether a corresponding part of the multiple parts in the symbol group is used for UL transmission.

[0188] In some embodiments of the present disclosure, a resource or reference region is divided into a first portion and a second portion in the frequency domain, and the first portion and the second portion are inserted into a UL subband. A symbol group is divided into at least one symbol group, and the DCI includes a pair of bits for each of the at least one symbol group, wherein the first bit of the pair of bits indicates whether the first portion in the symbol group is used for DL reception, and the second bit of the pair of bits indicates whether the second portion in the symbol group is used for DL reception.

[0189] In some embodiments of the present disclosure, the first portion and the second portion are inserted into the UL sub-band and the guard band.

[0190] Those skilled in the art will appreciate that the order of the operations in the exemplary process 1000 may be changed and some operations in the exemplary process 1000 may be removed or modified without departing from the spirit and scope of the present disclosure.

[0191] Figure 11 1 is a block diagram illustrating an exemplary device 1100 according to some embodiments of the present disclosure. Figure 11 , apparatus 1100 may include at least one processor 1106 and at least one transceiver 1102 coupled to the processor 1106. Apparatus 1100 may be a UE or a network entity, such as a BS.

[0192] Although elements such as at least one transceiver 1102 and a processor 1106 are described in the singular in this figure, plural forms are contemplated unless expressly stated to be limited to the singular. In some embodiments of the present application, the transceiver 1102 may be divided into two devices, such as a receive circuit system and a transmit circuit system. In some embodiments of the present application, the apparatus 1100 may further include an input device, a memory, and / or other components.

[0193] In some embodiments of the present application, the device 1100 may be a UE. The transceiver 1102 and the processor 1106 may interact with each other to execute Figures 1 to 10The operations of the UE described in. In some embodiments of the present application, the device 1100 may be a BS. The transceiver 1102 and the processor 1106 may interact with each other to perform the operations of the BS described in Figures 1 to 10 In.

[0194] In some embodiments of the present application, the device 1100 may further include at least one non-transitory computer-readable medium.

[0195] For example, in some embodiments of the present disclosure, computer-executable instructions may be stored on the non-transitory computer-readable medium that cause the processor 1106 to implement the method of the UE described above. For example, when executed, the computer-executable instructions cause the processor 1106 to interact with the transceiver 1102 to perform the operations of the UE described in Figures 1 to 10 In.

[0196] In some embodiments of the present disclosure, computer-executable instructions may be stored on the non-transitory computer-readable medium that cause the processor 1106 to implement the method of the BS described above. For example, when executed, the computer-executable instructions cause the processor 1106 to interact with the transceiver 1102 to perform the operations of the BS described in Figures 1 to 10 In.

[0197] Those of ordinary skill in the art will understand that the operations or steps of the methods described in connection with the aspects disclosed herein may be embodied directly in hardware, in software modules executed by a processor, or in a combination of both. The software modules may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. Additionally, in some aspects, the operations or steps of the methods may reside on a non-transitory computer-readable medium as one or any combination or set of code and / or instructions, which may be incorporated into a computer program product.

[0198] Although the present disclosure has been described with respect to specific embodiments thereof, it is apparent that many alternatives, modifications, and variations will be apparent to those skilled in the art. For example, the various components of the embodiments may be interchanged, added, or substituted in other embodiments. Also, all of the elements of each figure are not necessary for the operation of the disclosed embodiments. For example, the teachings of the present disclosure will enable those of ordinary skill in the art to make and use the present disclosure by simply employing the elements of the independent claims. Accordingly, the embodiments of the present disclosure set forth herein are intended to be illustrative rather than restrictive. Various changes may be made without departing from the spirit and scope of the present disclosure.

[0199] In this document, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed or inherent to the process, method, article or apparatus. An element that begins with "a", "an" or the like does not, without further limitation, preclude the presence of additional identical elements in the process, method, article or apparatus that includes that element. Moreover, the term "another" is defined as at least a second or more. As used herein, the terms "having" and the like are defined as "comprising". For example, an expression such as "A and / or B" or "at least one of A and B" can include any and all combinations of the words listed with that expression. For example, the expression "A and / or B" or "at least one of A and B" can include A, B, or both A and B. The terms "first", "second" or the like are used only to clearly illustrate embodiments of the present application and are not used to limit the substance of the present application.

Claims

1. A user equipment (UE) comprising: a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to: determine a reference region, wherein the reference region includes a set of resource blocks (RBs) in the frequency domain and a set of symbols in the time domain, the set of symbols including at least one subband non-overlapping full-duplex (SBFD) symbol; and receive downlink control information (DCI) that indicates whether one or more RBs and one or more symbols in a resource are for downlink (DL) reception or indicates whether one or more RBs and one or more symbols in the resource are for uplink (UL) transmission, wherein the RBs in the frequency domain of the resource are determined based on the reference region.

2. The UE according to claim 1, wherein the DCI indicates whether one or more RBs and one or more symbols are for DL reception, and the RBs in the frequency domain of the resource are determined by removing the RBs in the UL subband from the set of RBs; or the DCI indicates whether one or more RBs and one or more symbols are for UL transmission, and the RBs in the frequency domain of the resource are determined by removing the RBs not in the UL subband from the set of RBs.

3. The UE according to claim 2, wherein when all symbols in the reference region are SBFD symbols, the RBs in the frequency domain of the resource are determined by removing the RBs in the UL subband from the set of RBs or by removing the RBs not in the UL subband from the set of RBs.

4. The UE according to claim 2, wherein the set of symbols is divided into at least one symbol group in the time domain; and for each of the at least one symbol group, when all symbols in the symbol group are SBFD symbols, the RBs in the frequency domain of the resource in the symbol group are determined by removing the RBs in the UL subband from the set of RBs or by removing the RBs not in the UL subband from the set of RBs.

5. The UE according to claim 1, wherein when at least one symbol in the reference region is not an SBFD symbol, the RBs in the frequency domain of the resource are equal to the set of RBs.

6. The UE according to claim 1, wherein the set of symbols is divided into at least one symbol group in the time domain; and for each of the at least one symbol group, when at least one symbol in the symbol group is not an SBFD symbol, the RBs in the frequency domain of the resource in the symbol group are equal to the set of RBs.

7. The UE according to any one of claims 2 to 4, wherein the number of removed RBs is determined based on the subcarrier spacing (SCS) configuration of the DL reception or UL transmission and the SCS configuration of the UL subband.

8. The UE according to claim 1, wherein the processor is further configured to receive an indication indicating a second set of RBs, and depending on the set of symbols in the reference region, the RBs in the frequency domain of the resource are equal to the second set of RBs or the set of RBs.

9. The UE according to claim 8, wherein when all symbols in the reference region are SBFD symbols, the RB in the frequency domain of the resource is equal to the second set of RBs; otherwise, the RB in the frequency domain of the resource is equal to the set of RBs.

10. The UE according to claim 8, wherein the set of symbols is divided into at least one symbol group; and for each of the at least one symbol group, when all symbols in the symbol group are SBFD symbols, the RB in the frequency domain of the resource in the symbol group is equal to the second set of RBs; otherwise, the RB in the frequency domain of the resource in the symbol group is equal to the set of RBs.

11. The UE according to any one of claims 1, 2, or 8, wherein the resource includes the set of symbols in the time domain.

12. The UE according to claim 11, wherein the resource is divided into multiple parts in the frequency domain; and wherein the set of symbols is divided into at least one symbol group, the DCI includes an indicator for each of the at least one symbol group, and each bit of the indicator indicates whether the corresponding part in the multiple parts in the symbol group is used for DL reception or indicates whether the corresponding part in the multiple parts in the symbol group is used for UL transmission.

13. The UE according to claim 11, wherein the resource is divided into a first part and a second part in the frequency domain, and the first part and the second part are inserted into UL subbands; and wherein the set of symbols is divided into at least one symbol group, the DCI includes a pair of bits for each of the at least one symbol group, the first bit in the pair of bits indicates whether the first part in the symbol group is used for DL reception, and the second bit in the pair of bits indicates whether the second part in the symbol group is used for DL reception.

14. A base station BS, comprising: a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to: determine a reference region of a user equipment UE, wherein the reference region includes a set of resource blocks RBs in the frequency domain and a set of symbols in the time domain, and the set of symbols includes at least one subband non-overlapping full-duplex SBFD symbol; and transmit downlink control information DCI to the UE, which indicates whether one or more RBs and one or more symbols in the resource are used for downlink DL reception or indicates whether one or more RBs and one or more symbols in the resource are used for uplink UL transmission, wherein the RB in the frequency domain of the resource is determined based on the reference region.

15. A method performed by a user equipment UE, comprising: determining a reference region, wherein the reference region includes a set of resource blocks RBs in the frequency domain and a set of symbols in the time domain, and the set of symbols includes at least one subband non-overlapping full-duplex SBFD symbol; and Receive downlink control information DCI, which indicates whether one or more RBs and one or more symbols in a resource are for downlink DL reception or indicates whether one or more RBs and one or more symbols in the resource are for uplink UL transmission, wherein the RBs in the frequency domain of the resource are determined based on the reference region.

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