Sub-band determination for wireless communication

Abstract

The present disclosure relates to wireless communications including a network device determining and a user equipment receiving a first physical downlink control channel (PDCCH) configuration for a first downlink (DL) bandwidth portion (BWP) and a second PDCCH configuration for a first sub-band within an uplink (UL) BWP or within the DL BWP. The network equipment transmits a PDCCH in the first sub-band according to the second PDCCH configuration, and the user equipment receives the PDCCH in the first sub-band according to the second PDCCH configuration, or the network equipment receives UL transmission in the UL BWP or in a second sub-band, and the user equipment transmits the UL transmission in the UL BWP or in the second sub-band. And the network device configures a DL sub-band within the UL BWP and configures an UL sub-band within the DL BWP, the user equipment receives the DL sub-band and the UL sub-band configuration, and the network device and the user equipment perform DL transmission in the DL sub-band or perform UL transmission in the UL sub-band.

Description

Technical Field

[0001] This document generally relates to subband determination in wireless communications. Background Art

[0002] In wireless communications, time domain resources are split between downlink and uplink transmissions in time division duplex (TDD). Allocating limited durations for uplink transmissions in TDD may result in reduced coverage, increased latency, and reduced capacity. Methods to enhance conventional TDD to improve these deficiencies may be needed. Summary of the invention

[0003] This document relates to methods, systems, apparatus, and devices for wireless communications. In some implementations, a method for wireless communications includes: receiving, by a user equipment, a first physical downlink control channel (PDCCH) configuration for a downlink (DL) bandwidth part (BWP) and a second PDCCH configuration for a first subband within an uplink (UL) BWP or within the DL BWP; and receiving, by the user equipment, a PDCCH in the first subband according to the second PDCCH configuration, or sending, by the user equipment, an UL transmission in the UL BWP or in a second subband.

[0004] In some other implementations, a method for wireless communication includes: determining, by a network device, a first PDCCH configuration for a DLBWP and a second PDCCH configuration for a first subband within a UL BWP or within the DL BWP; and sending, by the network device, a PDCCH in the first subband according to the second configuration, or receiving, by the network device, a UL transmission in the UL BWP or in a second subband.

[0005] In some other implementations, a method for wireless communication includes: receiving, by a user equipment, a configuration of a DL subband within a UL BWP; receiving, by the user equipment, a configuration of a UL subband within a DL BWP; and performing, by the user equipment, a DL transmission in the DL subband or a UL transmission in the UL subband.

[0006] In some other implementations, a method for wireless communication includes: configuring, by a network device, a DL subband within a UL BWP; configuring, by the network device, a UL subband within the DL BWP; and sending, by the network device, a DL transmission in the DL subband and / or receiving, by the network device, a UL transmission in the UL subband.

[0007] In some other implementations, a device such as a network device is disclosed. The device may include one or more processors and one or more memories, wherein the one or more processors are configured to read computer code from the one or more memories to implement any of the above methods.

[0008] In some other implementations, a computer program product is disclosed. The computer program product may include a non-transitory computer-readable program medium having computer code stored thereon, which, when executed by one or more processors, causes the one or more processors to implement any of the above methods.

[0009] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A block diagram of an example of a wireless communication system is shown.

[0011] Figure 2 A flow chart of a method of wireless communication involving sub-bands is shown.

[0012] Figure 3 A flow chart of another wireless communication method involving sub-bands is shown.

[0013] Figure 4 A time-frequency diagram showing an example configuration of time-frequency resources including a UL subband.

[0014] Figure 5 A time-frequency diagram showing another example configuration of time-frequency resources including UL subbands and DL subbands.

[0015] Figure 6 A time-frequency diagram showing another example configuration of time-frequency resources including UL subbands and DL subbands.

[0016] Figure 7 A time-frequency diagram showing another example configuration of time-frequency resources including UL subbands and DL subbands.

[0017] Figure 8 A time-frequency diagram showing another example configuration of time-frequency resources including UL subbands and DL subbands.

[0018] Fig. 9 A time-frequency diagram showing another example configuration of time-frequency resources including UL subbands and DL subbands.

[0019] Fig.10 A time-frequency diagram is shown of another example configuration of time-frequency resources including a first sub-band and a second sub-band.

[0020] Fig.11 A time-frequency diagram is shown showing another example configuration of time-frequency resources including a UL subband.

[0021] Fig.12 A flow chart of another wireless communication method involving sub-bands is shown.

[0022] Fig.13 A flow chart of another wireless communication method involving sub-bands is shown.

[0023] Fig.14 A time-frequency diagram showing another example configuration of time-frequency resources including UL subbands and DL subbands and also including PDCCH resources within a DL BWP.

[0024] Fig.15 A time-frequency diagram illustrating another example configuration of time-frequency resources including a UL subband, a DL subband, and one or more monitoring opportunities (MOs).

[0025] Fig.16 A time-frequency diagram showing another example configuration of time-frequency resources including UL subbands, DL subbands and MO.

[0026] Fig.17 A time-frequency diagram is shown of another example configuration of time-frequency resources including a first sub-band and a second sub-band. DETAILED DESCRIPTION

[0027] This specification describes various embodiments of systems, apparatuses, devices, and methods for wireless communications involving sub-bands.

[0028] Figure 1 A diagram of an example wireless communication system 100 is shown, which includes a plurality of communication nodes (or just nodes) configured to wirelessly communicate with each other. Generally, the communication nodes include at least one user device 102 and at least one network device 104. Figure 1 The example wireless communication system 100 in FIG. 1 is shown as including two user devices 102 and a device 104, the two user devices including a first user device 102(1) and a second user device 102(2). However, various other examples of the wireless communication system 100 including any of various combinations of one or more user devices 102 and / or one or more network devices 104 are possible.

[0029] Generally, a user device as described herein (such as user device 102) may include a single electronic device or apparatus capable of wireless communication over a network, or multiple electronic devices or apparatuses (e.g., a network thereof). A user device may include or otherwise be referred to as a user terminal, user terminal device, or user equipment (UE). In addition, the user device may be or include, but is not limited to, a mobile device (such as a mobile phone, a smart phone, a smart watch, a tablet computer, a laptop computer, a vehicle or other vessel (powered by human power, motor or engine, such as a car, airplane, train, ship or bicycle, etc., as non-limiting examples) or a fixed or stationary device (such as a desktop computer or other computing device that is not usually moved for a long time, such as an appliance, other relatively heavy devices including the Internet of Things (IoT), or computing devices used in commercial or industrial environments, etc., as non-limiting examples). In various embodiments, the user device 102 may include a transceiver circuit system 106, which is coupled to an antenna 108 to implement wireless communication with the network device 104. The transceiver circuit system 106 may also be coupled to a processor 110, which may also be coupled to a memory 112 or other storage device. The memory 112 may store therein instructions or codes, which, when read and executed by the processor 110, cause the processor 110 to implement the various methods described herein.

[0030] In addition, in general, a network device (such as network device 104) as described herein may include a single electronic device or apparatus, or multiple electronic devices or apparatuses (e.g., a network thereof), and may include one or more wireless access nodes, base stations, or other wireless network access points capable of wirelessly communicating with one or more user devices and / or one or more other network devices 104 over a network. For example, in various embodiments, network device 104 may include a 4G LTE base station, a 5G NR base station, a 5G central unit base station, a 5G distributed unit base station, a next generation Node B (gNB), an enhanced Node B (eNB), or other similar or next generation (e.g., 6G) base station. Network device 104 may include a transceiver circuit system 114 coupled to an antenna 116 to enable wireless communication with user device 102 or another network device 104, which antenna may include an antenna tower 118 in various ways. Transceiver circuit system 114 may also be coupled to one or more processors 120, which may also be coupled to a memory 122 or other storage device. The memory 122 may store therein instructions or codes that, when read and executed by the processor 120 , cause the processor 120 to implement one or more of the methods described herein.

[0031] In various embodiments, two communication nodes in the wireless system 100, such as a user device 102 and a network device 104, two user devices 102 without a network device 104, or two network devices 104 without a user device 102, can be configured to communicate wirelessly with each other in or through a mobile network and / or a wireless access network according to one or more standards and / or specifications. Typically, the standard and / or specification can define rules or procedures by which communication nodes can communicate wirelessly, and in various embodiments, these rules or procedures may include rules or procedures for communicating in a millimeter (mm) wave band, and / or rules or procedures with multi-antenna schemes and beamforming capabilities. In addition or alternatively, the standard and / or specification is one that defines wireless access technologies and / or cellular technologies, such as fourth generation (4G) long term evolution (LTE), fifth generation (5G) new wireless (NR) or new wireless unlicensed (NR-U), etc., as non-limiting examples.

[0032] In addition, in the wireless system 100, the communication nodes are configured to wirelessly transmit signals between each other. Generally, the communication between two communication nodes in the wireless system 100 can be or include transmission or reception, and generally both are performed simultaneously, depending on the perspective of the specific node in the communication. For example, for a given communication between a first node and a second node, wherein the first node is sending a signal to the second node, and the second node is receiving a signal from the first node, the first node can be referred to as a source or sending node or device, the second node can be referred to as a destination or receiving node or device, and the communication can be considered to be sending for the first node and receiving for the second node. Of course, since the communication nodes in the wireless system 100 can send and receive signals, a single communication node can be both a sending / source node and a receiving / destination node at the same time, or switch between being a source / sending node and a destination / receiving node.

[0033] Furthermore, a specific signal may be characterized or defined as a UL signal, a DL signal, or a sidelink (SL) signal. An uplink signal is a signal sent from the user equipment 102 to the network device 104. A downlink signal is a signal sent from the network device 104 to the user equipment 102. A sidelink signal is a signal sent from one user equipment 102 to another user equipment 102, or a signal sent from one network device 104 to another network device 104. Furthermore, for sidelink transmission, the first / source user equipment 102 directly sends the sidelink signal to the second / destination user equipment 102, instead of forwarding the sidelink signal to the network device 104.

[0034] In addition, signals transmitted between communication nodes in the system 100 can be characterized or defined as data signals or control signals. In general, a data signal is a signal that includes or carries data, such as multimedia data (e.g., voice data and / or image data), and a control signal is a signal that carries control information that configures the communication nodes in some way to communicate with each other, or otherwise controls how the communication nodes transmit data signals to each other. Furthermore, certain signals can be defined or characterized by a combination of data / control and uplink / downlink / sidelink, including uplink control signals, uplink data signals, downlink control signals, downlink data signals, sidelink control signals, and sidelink data signals.

[0035] For at least some specifications (such as 5G NR), data signals and control signals are sent and / or carried on physical channels. In general, a physical channel corresponds to a set of time-frequency resources for transmitting signals. Different types of physical channels can be used to send different types of signals. For example, a physical data channel (or only a data channel), also referred to herein as a traffic channel, is used to send data signals, and a physical control channel (or only a control channel) is used to send control signals. Example types of traffic channels (or physical data channels) include, but are not limited to, a physical downlink shared channel (PDSCH) for transmitting downlink data signals, a physical uplink shared channel (PUSCH) for transmitting uplink data signals, and a physical sidelink shared channel (PSSCH) for transmitting sidelink data signals. In addition, example types of physical control channels include, but are not limited to, a PDCCH for transmitting downlink control signals, a physical uplink control channel (PUCCH) for transmitting uplink control signals, and a physical sidelink control channel (PSCCH) for transmitting sidelink control signals. As used herein for simplicity, unless otherwise specified, a particular type of physical channel is also used to refer to a signal transmitted on that particular type of physical channel, and / or a transmission on that particular type of physical channel. As an example, PDSCH refers to the physical downlink shared channel itself, a downlink data signal transmitted on the PDSCH, or downlink data transmission. Therefore, a communication node sending or receiving the PDSCH means that the communication node is sending or receiving a signal on the PDSCH.

[0036] In addition, for at least some specifications, such as 5G NR, and / or for at least some types of control signals, the control signals sent by the communication nodes may include control information including information necessary to enable transmission of one or more data signals between the communication nodes and / or to schedule one or more data channels (or one or more transmissions on data channels). For example, such control information may include information necessary to correctly receive, decode, and demodulate data signals received on a physical data channel during data transmission, and / or information necessary for an uplink scheduling grant that informs a user device of resources and a transmission format for uplink data transmission. In some embodiments, the control information includes downlink control information (DCI) sent from the network device 104 to the user device 102 in the downlink direction. In other embodiments, the control information includes uplink control information (UCI) sent from the user device 102 to the network device 104 in the uplink direction, or sidelink control information (SCI) sent from one user device 102(1) to another user device 102(2) in the sidelink direction.

[0037] In addition, one or more of the user equipment 102 and / or the network device 104 may support sub-band non-overlapping full duplex (SBFD) within the TDD band, at least on the network device 104 side. Also, SBFD may be supported on a TDD carrier. In the embodiments described herein, SBFD may be used with one or more UL sub-bands, one or more DL sub-bands, or a combination of one or more UL sub-bands and one or more DL sub-bands. Also, various ways of determining time resources and / or frequency resources for a UL or DL ​​sub-band or for a channel or signal within a UL or DL ​​sub-band are described herein.

[0038] Figure 2 A flow chart of an example method 200 for wireless communication involving subbands is shown. At block 202, user equipment 102 may receive a configuration of a DL subband within a UL BWP. Also, user equipment 102 may receive a configuration of a UL subband within a DL BWP. At block 204, user equipment 102 may perform at least one of a DL transmission in the DL subband or a UL transmission in the UL subband.

[0039] Figure 3 A flow chart of another example method 300 for wireless communications involving subbands is shown. At block 302, the network device 104 may configure a DL subband within a UL BWP. Also, the network device 104 may configure a UL subband within a DL BWP. At block 304, the network device 104 may at least one of: send a DL transmission in the DL subband, or receive a UL transmission in the UL subband.

[0040] Additionally, in some embodiments, as non-limiting examples, the configuration of a given subband (such as a DL subband or a UL subband) may include, specify and / or indicate time resources and / or frequency resources for the given subband, or a channel and / or signal configuration for the given subband. In any of the various embodiments, other information used by the network device 104 and / or the user device 102 to communicate on or in a given subband may be included in, specified or indicated by, the configuration of the given subband.

[0041] In addition, in some embodiments of method 200 and / or method 300, the DL subband and the UL subband may have the same center frequency, the same frequency resources, and different time resources. In other embodiments, the DL subband and the UL subband may have the same center frequency, different frequency resources, and different time resources. In still other embodiments, the DL subband and the UL subband have the same frequency resources or different frequency resources, and the same time resources. In still other embodiments, the time-frequency resources of the DL subband and the UL subband are independently determined by at least one of the network device 104 or the user equipment 102.

[0042] Additionally or alternatively, at least one of the user equipment 102 or the network device 104 may apply a conflict resolution or backoff mechanism in response to overlapping resources between the DL subband and the UL subband. Additionally or alternatively, at least one of the user equipment 102 or the network device 104 may use a resource allocation method, such as a bitmap or a resource indication value (RIV), to derive frequency resources for at least one of a gap, a DL subband, or a UL subband.

[0043] In more detail, in various embodiments, the user equipment 102 and / or the network device 104 may utilize a TDD carrier to support SBFD operation. Also, UL subbands may be configured on downlink or flexible (D or F) time slots or symbols within continuous resources. Figure 4 A time-frequency diagram is shown, showing SBFD with only the UL subband. Figure 4 , each "D" represents a DL time slot or symbol, which can be represented as a set of time-frequency resources designated or configured for one or more DL transmissions, and each "U" represents a UL time slot or symbol, which can be represented as a set of time-frequency resources designated or configured for one or more UL transmissions. Figure 4 Six time-frequency resource sets are shown, which are configured consecutively in time, including four DL time-frequency resource sets followed by two UL time-frequency resource sets. In various embodiments, the frequency resources of a given time-frequency resource set may be extended over a carrier, a frequency band, a BWP, or other predetermined frequency range. Also, the time resources of a given time-frequency resource set may be extended over at least one time unit, such as at least one symbol or at least one time slot. Figure 4is shown as extending in time over the second, third and fourth time-frequency resource sets. And, Figure 4 The UL subbands shown in have contiguous frequency resources extending over a frequency range that is smaller than the total frequency range (eg, carrier, frequency band, or BWP) of the sets of time-frequency resources.

[0044] Other embodiments may include only DL subbands, or one or more UL subbands and one or more DL subbands. DL subbands may be extended in UL time-frequency resource sets, and UL subbands may be extended in DL time-frequency resource sets. DL subbands may be extended in time and / or configured within U or F time slots or symbols, and / or in frequency within a certain UL frequency range, such as within a UL BWP. In addition, UL subbands may be extended in time and / or configured within D or F time slots or symbols, and / or in frequency within a certain DL frequency range, such as within a DL BWP.

[0045] In some embodiments including UL sub-bands and DL sub-bands, such as Figure 5 As shown, the UL subband and the DL subband may have the same frequency resources, the same center frequency, and different time resources. Figure 5 A time-frequency diagram is shown, showing SBFD with UL subbands and DL subbands. Specifically, Figure 5 The UL subband is shown to be spread over three DL time-frequency resource sets. For example, the UL subband may be spread over three DL time slots or symbols in time and may be spread within a DL BWP in frequency. In addition, Figure 5 It is shown that the DL subband is extended over two UL time-frequency resource sets. For example, the DL subband can be extended over two DL time slots or symbols in time and within the UL BWP in frequency. Moreover, the UL subband and the DL subband have the same frequency resources and the same center frequency, and have different, non-overlapping time resources.

[0046] In other embodiments including UL sub-bands and DL sub-bands, such as Figure 6 As shown, the UL subband and the DL subband may have the same center frequency, different (or not completely the same) frequency resources, and different, non-overlapping time resources. For example, the UL subband may extend over D and / or F time slots and / or symbols in time, or be configured therein, and / or extend within the DL BWP in frequency. Furthermore, the DL subband may extend over U and / or F time slots and / or symbols in time, or be configured therein, and / or extend within the UL BWP in frequency. Furthermore, the center frequencies of the UL subband and the DL subband are the same, the frequency domain resources of the UL subband and the DL subband are different (for example, the DL subband extends over a larger frequency range than the UL subband), and there are no overlapping resources between the UL subband and the DL subband in the time domain.

[0047] In other embodiments including UL sub-bands and DL sub-bands, such as Figure 7 As shown, the UL subband and the DL subband may have different center frequencies, different frequency resources, and the same or overlapping time resources. Figure 7 As shown, both UL subbands and DL subbands can be extended in the same set of time-frequency resources. Figure 7 In the embodiment, both the UL subband and the DL subband are extended in the same DL time-frequency resource set. Accordingly, both the UL subband and the DL subband are extended in time within the D and / or F time slots or symbols, or are configured therein, and are both extended in frequency within the same DL BWP. Other embodiments may configure the UL and DL subbands to be extended in the same UL time-frequency resource set or be configured therein. For such a configuration, one subband may be considered to be located on one side of another subband in the frequency domain. And, for at least some of these embodiments, the UL subband and the DL subband may be frequency division multiplexed (FDM), and the UL and DL subbands have overlapping resources in the time domain.

[0048] In yet other embodiments including UL sub-bands and DL sub-bands, such as Figure 8 As shown, the UL subband and the DL subband may have different frequency resources and different time resources. Figure 8 As shown, the UL subbands extend over or are configured within D and / or F time slots or symbols in time and extend over the DL BWP in frequency. Also, the DL subbands extend over or are configured within U and / or F time slots or symbols in time and extend over the UL BWP in frequency. Also, Figure 8 In the example of , the UL and DL subbands may have different center frequencies, and their respective resources in the time domain do not overlap.

[0049] And, despite Figure 4-Figure 8 Not shown, but in any of the various embodiments, there may be one or more gaps inside and / or outside one or more of the UL subbands or DL ​​subbands. Also, in various embodiments, Figure 5 , Figure 6 and Figure 8 The SBFD example shown in can be considered to include time division multiplexed (TDM) sub-bands, and Figure 7 The SBFD example in can be considered to include FDM sub-bands.

[0050] Thus, various embodiments described herein utilize sub-band non-overlapping full-duplex (SBFD) operation of UL sub-bands and / or DL ​​sub-bands, such as those described above with reference to Figure 4-Figure 8Those described may achieve better performance in terms of reduced latency and improved capacity. Also, in various embodiments, for embodiments where the UL subband and the DL subband have the same center frequency and the same frequency resources, the same narrowband filtering may be used. In the case where different frequency resources are used for the UL subband and the DL subband, a more flexible or compromised capacity may be achieved.

[0051] Additionally or alternatively, in some cases where SBFD operation is employed, the UL subband and the DL subband may have overlapping resources in the time domain and / or frequency domain. For such cases, the user equipment 102 and / or the network device 104 may employ a conflict resolution and / or backoff mechanism.

[0052] Fig. 9 A time-frequency diagram of SBFD operation with overlapping resources in the time domain for UL and DL subbands is shown. Fig. 9 In some cases of overlapping resources as shown, the UL subband and the DL subband may have the same center frequency and / or the same frequency resources. In response to determining overlapping resources, such as in Fig. 9 In the example of FIG. 1 , user device 102 and / or network device 104 may employ or apply a conflict resolution and / or backoff mechanism.

[0053] In some embodiments where user equipment 102 and / or network device 104 employs conflict resolution, user equipment 102 and / or network device 104 may determine to give UL transmissions in the UL subband a higher priority than DL transmissions in the DL subband. In other embodiments, user equipment 102 and / or network device 104 may give DL transmissions in the DL subband a higher priority than UL transmissions in the UL subband. In other embodiments, user equipment 102 and / or network device 104 may give dynamically scheduled transmissions a higher priority than semi-persistent transmissions.

[0054] Furthermore, in some embodiments where the user equipment 102 and / or the network device 104 employ a fallback mechanism, the user equipment 102 and / or the network device 104 may "fall back" or utilize the UL subband and / or the DL subband as a flexible subband in which UL transmission and / or DL ​​transmission may be performed. Furthermore, as used herein, the term "flexible" for time and / or frequency resources (such as subbands, time slots, symbols, etc.) means that the user equipment 102 may not make any assumptions about the uplink or downlink transmission direction of the time or frequency resource, or configure / determine a frame structure for the flexible subband. The user equipment 102 may transmit in the UL direction or receive in the DL direction on or in a given flexible time or frequency resource according to any scheduling or other configuration, such as determined by the network device 104.

[0055] For at least some of these embodiments, and / or in view of Figure 7 In the SBFD example in FIG. 1 , the network device 104 and / or the user device 102 may configure one or both of the UL and DL subbands so that the time resources corresponding to the UL subband and / or the DL subband may have any of various combinations of D, F, and / or U time slots or symbols, and / or the frequency resources corresponding to the UL subband and / or the DL subband may extend within the DL BWP and / or the UL BWP. Additionally or alternatively, one subband may be implicitly or derived to be located on one side of another subband or on each side of another subband.

[0056] Fig.10 Another time-frequency diagram generally including a first subband and a second subband is shown. The user equipment 102 and / or the network device 104 may regard the first subband as a DL BWP and the second subband as an extended supplementary uplink (SUL) carrier with D time slots / symbols. Such a first subband and a second subband may be configured within a single BWP, such as Fig.10 And, in Fig.10 In the example of , the center frequencies of the first and second subbands may be different, have different frequency domain resources, and may be FDMed, while there are overlapping resources in the time domain between the first and second subbands.

[0057] In addition, similar to Figure 4-Figure 8 SBFD example in Fig. 9 and Fig.10 In any of the various embodiments illustrated in , although not shown, one or more gaps may exist inside or outside one or more sub-bands.

[0058] Therefore, SBFD operation can be implemented by introducing UL subbands and / or DL ​​subbands, which in turn can achieve better performance in terms of reducing delay and / or improving capacity. And, for at least some embodiments, reducing delay and improving capacity can be further enhanced by configuring DL resources and UL resources simultaneously within a single flexible subband.

[0059] Additionally or alternatively, for embodiments where the UL subband is configured on D / F slots / symbols and has continuous frequency resources, an example frequency resource allocation for the UL subband may be determined or listed according to the following manner.

[0060] The network device 104 and / or the user device 102 may use a bitmap to derive the frequency resources of the gaps and / or subbands, where each bit corresponds to a respective one of X resource blocks (RBs) (e.g., X=6). Additionally or alternatively, the network device 104 and / or the user device 102 may explicitly use the RB offset indication to derive the gaps on one inner side of the SBFD or both inner sides of the SBFD.

[0061] A gap on one inner side of an SBFD may include one gap occupying one or more RBs out of the total number of RBs allocated to a given subband. For example, in the case where a continuous group of RBs is allocated to a given subband, one or more RBs constituting the upper limit or lower limit of the group may be allocated to the gap, and the remaining RBs may actually be allocated to or used for a given subband. For example, assuming that the BWP is allocated 100 RBs, a given subband is allocated 40 RBs, and the gap is allocated 6 RBs. The phrase "a gap on one inner side of an SBFD" may mean, for example, that 0-39th RBs are allocated for a subband, 34-39th RBs are used for the gap, and further, the actual RBs used for the subband are 0-33th RBs. This case corresponds to the subband being located on one side of the BWP.

[0062] In addition, the gaps on the two inner sides of the SBFD may include two gaps occupying two or more RBs in the total number of RBs allocated to a given subband. For example, in the case where a continuous group of RBs is allocated to a given subband, one or more RBs constituting the upper limit of the group may be allocated to the first gap, one or more RBs constituting the lower limit of the group may be allocated to the second gap, and the remaining number of RBs in the group may actually be allocated to the given subband. For example, assuming that the BWP is allocated 100 RBs, the given subband is allocated 40 RBs, and the gap is allocated 6 RBs. The phrase "gaps on the two inner sides of the SBFD" may mean, for example, that RBs 10-49 are allocated for the subband, RBs 10-12 and RBs 47-49 are used for the gaps (e.g., RBs 10-12 are used for the first gap, and RBs 47-49 are used for the second gap), and further, the actual RBs used for the subband are RBs 13-46. This case corresponds to the subband being located in the middle of the BWP.

[0063] In some embodiments, the frequency domain resources of the BWP are determined by the starting physical resource block (PRB) and the length of multiple PRBs. It is assumed that the starting PRB is referenced to point A, that is, the starting PRB is a PRB determined by the subcarrier spacing (subcarrierSpacing) of the associated BWP and the carrier offset (offsetToCarrier) corresponding to the subcarrier spacing, combined with the number of RBs. Among them, the number of RBs is indicated by the location and bandwidth (locationAndBandwidth) parameters of the BWP using a resource indication value (RIV) with continuous resource allocation. The current frequency domain resources of the CORESET are determined by a bitmap in the DL BWP, where each bit corresponds to a corresponding RB in a group of 6 RBs.

[0064] In more detail, in some embodiments, N GThe value of (number of RBs in a gap) is 6 or 3 RBs. Also, in some embodiments, N U The value of (the number of RBs for a given UL subband) is approximately 50 to 70 RBs, which may be equivalent to approximately 20% of the channel bandwidth. In the case where the UL subband is configured within the DL BWP, in order to avoid resource conflicts between the control resource set (CORESET) and the UL subband, the frequency resource allocation used to determine the CORESET is also used to determine or derive the gap and / or frequency resources of one or more subbands for SBFD. The benefit is to match the resource grid of the PDCCH. Fig.11 A time-frequency diagram including a UL subband and gaps on each side of the UL subband is shown. Fig.11 As shown, the UL subband and the gap on each side are configured. Accordingly, the user equipment 102 and / or the network device 104 can use a resource allocation method such as a bitmap or RIV to derive the frequency resources of the UL subband, and each bit in the bitmap corresponds to a corresponding one of X RBs (e.g., X=6). However, regardless of whether RIV or bitmap is used to determine the UL subband, in some embodiments, the network device 104 and / or the user equipment 102 can use the RB offset indication to derive the gap on one inner side of the SBFD or on both inner sides of the SBFD. For example, RB_offset=3RB can be used to locate each inner side of the SBFD. As another example, RB_offset=6RB can be used to locate one inner side of the SBFD.

[0065] Therefore, as described above, SBFD operation using UL subbands and / or DL ​​subbands can achieve better performance in terms of reduced latency and / or improved capacity. In addition, using the same frequency domain resource allocation for CORESET and UL subbands can avoid or facilitate avoiding resource conflicts between UL subbands and CORESET by aligning the resource grid of the DL control channel.

[0066] Fig.12 A flow chart of a wireless communication method 1200 involving subbands is shown. At block 1202, the user equipment 102 may receive a first PDCCH configuration in a first DL BWP and a second configuration of a first subband within a UL BWP or within a DL BWP. At block 1204, the user equipment 102 may at least one of: receive a PDCCH in the first subband according to the second PDCCH configuration, or may send an UL transmission in the UL BWP or in the second subband.

[0067] Fig.13A flow chart of a wireless communication method 1300 involving subbands is shown. At block 1302, the network device 104 may determine a first PDCCH configuration for a first DL BWP and a second PDCCH configuration for a first subband within a UL BWP or within a DL BWP. At block 1304, the network device 1304 may at least one of: transmit a PDCCH in the first subband according to the second PDCCH configuration, or receive a UL transmission in the UL BWP or in the second subband.

[0068] For at least some embodiments of method 1200 and / or method 1300, the first subband comprises a DL subband or a flexible subband, and the second subband comprises a UL subband or a flexible subband.

[0069] In addition, in some embodiments, the first PDCCH configuration and the second PDCCH configuration may be the same PDCCH configuration. For at least some of these embodiments, the same PDCCH configuration may indicate at least one of the following: an independent control resource set (CORESET) or an independent search space for the first subband and the DL BWP. Specifically, in these embodiments, the CORESET for the PDCCH in the DL subband is configured within the DL BWP, the UL BWP, or the first subband. For some other embodiments of these embodiments, the same PDCCH configuration may indicate at least one of the following: the same CORESET or the same search space for the DL BWP and the first subband. Specifically, in these embodiments, a conflict between a monitoring opportunity (MO) and the UL resources of the UL BWP may cause the user equipment 102 to overwrite one of the MO and the UL resources to give priority to the other of the MO and the UL resources. MO is used for PDCCH monitoring.

[0070] In more detail, in some embodiments using a DL subband or an extended SUL carrier with a DL slot / symbol (also referred to as a second subband), the same or shared PDCCH configuration (PDCCH-config) is used for both the DL BWP and the DL subband or extended SUL carrier. In other embodiments, a second or different PDCCH configuration (PDCCH-config) may be used for the DL subband or extended SUL carrier. Fig.14 A time-frequency diagram is shown showing PDCCH resources within the DLBWP and DL subband configured by the shared PDDCH config.

[0071] In some embodiments, the frequency domain resources and time domain resources of the PDCCH are determined by the CORESET and search space configuration.The network device 104 and / or the user equipment 102 may determine the PDCCH to be transmitted in the DL subband in one of several ways.

[0072] In the first way, there is no PDCCH in the DL subband. For at least some of these embodiments, the DL subband is used only for DL ​​traffic transmission. In this case, the DL subband can be considered a flexible DL subband (or simply a flexible subband). That is, how the DL subband is used can depend on whether the gNB schedules certain resources to be used for the DL subband or as U timeslots / symbols. In this way, the network device 104 does not allow PDCCH to be sent in the DL subband. This in turn can provide additional opportunities for DL ​​transmissions in U timeslots / symbols, and the same opportunities exist for PDCCH transmissions as if there were no DL subband.

[0073] In a second manner, the user equipment 102 and / or the network device 104 and / or the user equipment 102 may determine independent CORESETs and / or independent search spaces for the DL BWP and the DL subband. For at least some of these embodiments, the CORESET for the PDCCH in the DL subband is configured within the DL BWP, the UL BWP, or the DL subband. That is, the frequency range of resource allocation for the CORESET is within the DL BWP, the UL BWP, or the DL subband. Additionally or alternatively, the PDCCH demodulation reference signal (DMRS) reference k0 may be subcarrier 0 in the common resource block 0 or RB 0 of the DL subband. Additionally or alternatively, before the network device 104 and / or the user equipment 102 configures the DL subband, a UE-specific search space (USS) configured or present in the U slot / symbol may be used for the DL subband. That is, the CORESET and / or search space may be independently configured for the radio resource control (RRC) connection mode of the user equipment 102. For example, for the idle / inactive mode of the user equipment 102, the DL subband is not available. However, after the user equipment 102 enters the RRC connected mode, the user equipment 102 and / or the network device 104 can configure additional search spaces and / or CORESETs in the resources of the DL subband. These embodiments of the second approach can provide a more flexible configuration. And, in some embodiments, the CORESET is configured based on the DL BWP. That is, the first (leftmost / most significant) bit corresponds to the first RB group in the BWP, and so on. The bit set to 1 indicates that the RB group belongs to the frequency domain resources of the CORESET. The bit corresponding to a group of RBs that are not completely contained in the bandwidth portion in which the CORESET is configured is set to zero. The CORESET used in the DL subband can be configured based on the DL BWP, UL BWP, or DL ​​subband to determine the frequency domain region for allocation. In addition, in some embodiments, the current PDCCH DMRS reference k0 is determined by subcarrier 0 of the lowest numbered resource block in CORESET#0 or subcarrier 0 in common resource block 0. For a CORESET used in a DL subband, the PDCCH DMRS reference k0 is determined by subcarrier 0 in common resource block 0 or subcarrier 0 of the lowest numbered resource block in the DL subband. In the case where a DL subband is not configured or has not yet been configured, the network device 104 and / or the user equipment 102 may determine which USS to use for the DL subband. For example, the network device 104 and / or the user equipment 102 may determine a monitoring opportunity (MO) or USS that occurs in a U slot / symbol as the USS used in the DL subband.In addition, if the MO configured for the DL BWP (or DL ​​subband) appears in the DL subband (or DL ​​BWP), then if the MO is valid, the monitored PDCCH may also be valid, or if the MO is invalid, the PDCCH may be discarded, omitted, or overwritten.

[0074] And, in some cases, the second way can provide one or more restrictions. In the first restriction, only some symbols can be used for PDCCH, for example, the first one or two symbols in a time slot within a DL subband can be used for PDCCH. In the second restriction, only USS can be configured in the DL subband. That is, the DL subband is not used for initial access. In the third restriction, UL transmission can be sent on the DL subband in the absence of DL traffic. That is, the DL subband is not only used for DL ​​transmission, which can increase capacity. In the fourth restriction, in the event of a conflict between different signals / channels, the conflict can be resolved by conflict resolution, for example, a DL transmission can overwrite a UL transmission, or a UL transmission can overwrite a DL transmission. In addition or alternatively, PDCCH may not be sent on a DL subband.

[0075] In a third manner, the network device 104 and / or the user device 102 may apply the current CORESET and / or search space configuration to the original D / F slot / symbol and the DL subband. That is, the same CORESET and / or search space is used for the DL BWP and the DL subband. In at least some embodiments of the third manner, the same CORESET and / or the same search space configuration for the DL BWP and the DL subband may include at least one of the following. First, all D / F / U slots / symbols may be used for the search space. Second, the network device 104 and / or the user device 102 may override the monitoring opportunity (MO) to prioritize UL resources, or may override UL resources to prioritize MO. Third, a search space with dual search space duration / period may be used for the DL BWP and the DL subband, respectively. And, in some of these embodiments, due to the configured period / offset of the search space, all D / F / U slots / symbols may be used for the search space. For example, where the UE capabilities of supported DL subbands are reported, the configuration for USS may apply to all D / F / U slots / symbols.

[0076] To illustrate, in Fig.15In the exemplary time-frequency diagram of , if the associated CORESET can be included in the DL subband, a search space period = 5 slots and an offset = 1 slot can be used for a TDD carrier supporting the DL subband. In the event that the configuration of the MO conflicts with the UL subband or U slot / symbol, the following items can be used or adopted. First, in the event that a conflict between the MO and the UL subband or U slot / symbol is not expected, the user equipment 102 and / or the network device 104 can use more independent search spaces and / or CORESETs. Additionally or alternatively, if the UL subband or U slot / symbol overrides the MO, the MO is invalid in the conflicting resources. On the other hand, if the MO overrides the UL subband or U slot / symbol, the MO is valid in the conflicting resources. Additionally or alternatively, one search space with a dual search space duration / period can be used for the DL BWP and the DL subband, respectively. As Fig.16 As shown, in addition to the search space period = 5 time slots and offset = 1 time slot, the first search space duration (e.g., search space duration 1) = 2 time slots and the second search space duration (e.g., search space duration 2) = 3 time slots can be used for two consecutive cycles respectively. Other similar mechanisms can be used, such as dual cycles each with independent offset / search space duration configurations.

[0077] Therefore, as described above, SBFD operation using one or more UL subbands and / or one or more DL subbands can achieve better performance in terms of reduced latency and improved capacity. Also, in some embodiments, using the same or independent CORESET and / or search space for DL ​​BWP and DL subbands based on a shared PDCCH configuration can avoid introducing additional PDCCH configurations for DL ​​subbands. In addition, DL BWP configurations can be reused for DL ​​subbands with minimal impact on implementation complexity.

[0078] Additionally or alternatively, in the case where the current PDCCH configuration is also used for the DL subband, the size of the DCI format in the D slot / symbol can be aligned with the size of the same DCI format in the DL subband. Fields determined by the same RRC configuration, such as a shared PDCCH-config (and a shared PDSCH-config), can facilitate such size alignment.

[0079] Also, for at least some embodiments using the same DCI format for DL ​​BWP and DL subband, the bandwidth portion indicator for scheduling DL subband may indicate whether to switch DL BWP or UL BWP, or may indicate whether the field is retained or dropped for subband scheduling. Additionally or alternatively, the rate matching indicator for scheduling DL subband may be retained or used within the DL subband in the UL BWP.

[0080] Also, for some embodiments, the frequency domain resource allocation (FDRA) field, in particular, the size of the DL BWP and UL BWP, is different. The allocated frequency region in the frequency domain in the DL subband can be based on the DL BWP, UL BWP, or DL ​​subband. Similarly, the allocated frequency region in the frequency domain in the UL subband can be based on the DL BWP, UL BWP, or UL subband.

[0081] Additionally or alternatively, for some embodiments, a bandwidth part indicator may be implemented in DCI format 1_x or 0_x for DL ​​subband and / or UL subband scheduling in any of the following ways. In a first way, the bandwidth part indicator may indicate whether to change a BWP having a DL or UL direction that is the same as the DL or UL direction for a subband for which a DCI format including the bandwidth part indicator is included. For example, a bandwidth part indicator for a DL subband in DCI format 1_1 may indicate whether to change a DL BWP. In a second way, a bandwidth part indicator may indicate whether to change a BWP having a DL or UL direction that is opposite to the DL or UL direction for a subband for which a DCI format including the bandwidth part indicator is included. For example, a bandwidth part indicator for a DL subband in DCI format 1_1 may indicate whether to change a UL BWP. In a third way, the bandwidth part indicator may be reserved for subband scheduling. For example, a bandwidth part indicator in DCI format 1_1 for a DL subband indicating a change to another BWP may in turn indicate whether the field is to be retained by the user equipment 102 or to be discarded by the user.

[0082] Additionally or alternatively, the rate matching indicator may be used for DL ​​subband scheduling in DCI format 1_x in any of the following various ways. In one approach, the rate matching (RM) indicator field may be the same size as that used in the DL BWP and may be retained. The reason for this may be that there is no rate matching pattern in the U slot / symbol. Additionally or alternatively, the use of RM indications and corresponding RM patterns may be extended to the U slot / symbol or DL ​​subband. In some embodiments, the same RM configured in the DL BWP may be used, or an independent RM configured for the DL subband within the DL subband or UL BWP. In the case of using the same RM pattern, a wider RM pattern may be configured, in which case the network device 104 may send signals (e.g., CSI-RS) only within the DL subband so as not to affect other resources in the UL BWP.

[0083] Therefore, as described above, SBFD operation using one or more UL subbands and / or one or more DL subbands can achieve better performance in terms of reducing delay and improving capacity. Moreover, using a shared PDCCH-config can avoid introducing additional PDCCH-config for DL ​​subbands, and the same DCI format can be used for both DL BWP and DL subbands. In addition, the configuration of DL BWP can be reused for DL ​​subbands, with minimal impact on implementation complexity.

[0084] In addition, for some embodiments of method 1200 and / or method 1300, the first PDCCH configuration and the second PDCCH configuration are different configurations. And, for some of these embodiments in which the PDCCH configurations are different, the second PDCCH configuration can determine one or more fields in a downlink control information (DCI) format for scheduling DL transmissions in the first subband. In some examples, the DCI format includes an indication of whether the DCI format is for the first subband or for the DL BWP. Additionally or alternatively, the total number of different DCI sizes with a cell radio network temporary identifier (C-RNTI) monitored by the user equipment is at most four.

[0085] Furthermore, in some embodiments where the PDCCH configuration is different, at least one of the following: the search space budget for the user equipment includes at least one of the following: more than 10 search spaces per BWP or more than 40 search spaces per cell; the CORESET budget for the user equipment includes at least one of the following: more than 5 CORESETs per BWP or more than 16 CORESETs per cell; the search space budget includes a first portion for the DL BWP and a second portion for the DL subband; or the CORESET budget includes a first portion for the DL BWP and a second portion for the DL subband. Additionally or alternatively, when the DL BWP and the DL subband are time-division multiplexed, the blind decoding budget or the control channel element (CCE) budget is the same for the DL BWP and the DL subband. Specifically, in these embodiments, for carrier aggregation scaling, the DL BWP and the DL subband can be counted as only one cell. Additionally or alternatively, in some embodiments where the PDCCH configuration is different, the blind decoding budget or the control channel element (CCE) budget includes a first portion for the DL BWP and a second portion for the DL subband. Specifically, in these embodiments, for carrier aggregation scaling, the DL subband is counted as one or more cells. Additionally or alternatively, in some embodiments where the PDCCH configuration is different, the user equipment 102 may perform per-slot discarding for the DL BWP and the DL subband, such that the per-slot discarding includes one of the following: performing per-slot discarding in a uniform manner when a subcarrier spacing (SCS) and a user equipment-specific search space (USS) are shared between the DL BWP and the DL subband; performing per-slot discarding for the DL BWP and the DL subband independently of each other; performing per-slot discarding for the DL BWP but not for the DL subband; or performing per-slot discarding for the DL BWP and the DL subband in a uniform manner and according to a predetermined order when the DL BWP and the DL subband have independent UE-specific search spaces (USSs).

[0086] In more detail, in some embodiments, the network device 104 and / or the user device 102 may use independent or different PDCCH configurations, for example, such that there is an independent or second PDCCH configuration configured for a DL subband or an extended SUL with D slots / symbols (also referred to as a second subband). For at least some of these embodiments, one or more fields in the DCI format for scheduling the DL subband may be determined by the independent or second PDCCH configuration. Additionally or alternatively, one or more fields in the DCI format may be determined by the PDSCH configuration. Fig.17An example SBFD example is shown, where a separate or second PDCCH configuration may be used for a DL subband, where PDCCH resources within the DL subband are configured by the separate or second PDCCH configuration.

[0087] And, in order to implement SBFD, any of various ways may be used to determine or use the DCI size budget. In some embodiments, the DCI size budget may be the same for SBFD and other wireless communications that do not use SBFD. Additionally or alternatively, the same DCI format is used for both DL BWP and DL subbands, and / or the DCI format sizes for DL ​​BWP and DL subbands are aligned. Additionally or alternatively, the same DCI format may have an indication for a DL subband and / or an indication for a DL BWP. In other embodiments, different DCI formats may be used for DL ​​BWP and DL subbands. Additionally or alternatively, the DCI format for the DL subband may have the same size as the DCI format for a cell that is not configured with SBFD, but may include a different, second C-RNTI, or the size of the DCI format for the DL subband may be counted in another cell that is not configured with SBFD and / or subbands. Additionally or alternatively, the user device 102 may utilize a DCI size budget greater than "3+1" (i.e., the total number of different DCI sizes that the user device 102 is configured to monitor for cells), and / or up to "4" for a DCI size scrambled using a cyclic redundancy check (CRC) configured with a cell network temporary identifier (C-RNTI).

[0088] In more detail, in some embodiments, for the user equipment 102, the DCI size budget for each cell is "3+1" - that is, the total number of different DCI sizes that the user equipment 102 is configured to monitor for the cell is no more than 4 for the cell, and the total number of different DCI sizes with C-RNTI that the user equipment 102 is configured to monitor is no more than 3 for the cell. In the case where the cell is configured with a DL subband or an extended SUL carrier with D slots / symbols (which can also be regarded as a second subband), and / or in the case where an independent or second PDCCH configuration is configured for a DL subband or an extended SUL carrier with D slots / symbols, the DCI size budget of the user equipment may be determined according to one of the following ways.

[0089] In the first option, the DCI size budget for each cell is the same between cells configured with and without subbands. For some examples, for a DCI format (e.g., DCI format 1_x) used for D slots / symbols (or D resources on a virtual TDD carrier) and also used for DL ​​subbands (or D resources on a virtual SUL carrier), the size can be aligned by padding each field at the end or at the end. And, an indication for a DL subband can be used explicitly or implicitly. In other examples, a DCI format for scheduling in a DL subband (or in a D resource on a virtual SUL carrier) can have the same size as a DCI format for a cell that is not configured with a subband, but has a different radio network temporary identifier (RNTI) (e.g., a second C-RNTI), or can be counted in another cell that is not configured with SBFD and whose DCI size budget is less than "3+1".

[0090] In the second option, the DCI size budget for each cell may be higher than the DCI budget for cells that are not configured for SBFD or are not configured with subbands. In some of these embodiments, the DCI size budget for cells configured for SBFD may be doubled compared to the DCI size budget for cells that are not configured for SBFD. In this context, the DCI size budget for cells configured for SBFD may be considered as the sum of the DCI size budgets for the two cells. That is, the DCI size budget for a cell may be applied to each DL subband. In other embodiments, the DCI size budget for cells configured for SBFD may be more than "3+1", for example, "x+1", where x is greater than 3. That is, the total number of different DCI sizes that the user equipment 102 is configured to monitor for a cell is no more than (x+1) for the cell, and the total number of different DCI sizes with C-RNTI that the user equipment 102 is configured to monitor is no more than x for the cell, where x is greater than 3. In other embodiments, the total number of DCI size budgets is no greater than "4", and the DCI size budget for CRC scrambling with C-RNTI can be at most "4", that is, the total number of different DCI sizes that the user equipment 102 is configured to monitor is no more than 4 for the cell, and the total number of different DCI sizes with C-RNTI that the user equipment 102 is configured to monitor is no more than 4 for the cell.

[0091] Therefore, SBFD operation using one or more subbands and / or one or more DL subbands can achieve better performance in terms of reduced latency and improved capacity. In addition, using separate or independent PDCCH configurations for DL ​​subbands to determine one or more fields of DCI for scheduling DL subbands can allow the same DCI size budget as for cells not using SBFD, such as by using a size alignment mechanism, so as not to increase UE complexity.

[0092] Additionally or alternatively, for embodiments where the PDCCH configurations for the DL BWP and DL subbands are different or independent from each other, the search space budget and / or CORESET budget may be the same or different from the search space budget and / or CORESET budget for cells and / or user equipment that are not configured for SBFD. In other embodiments, the search space budget and / or CORESET budget for cells and / or user equipment configured for SBFD is higher than the budget for cells and / or user equipment that are not configured for SBFD. Additionally or alternatively, in various embodiments, the search space budget and / or CORESET budget is split such that a first portion of the search space budget and / or CORESET budget may be allocated to the DL BWP and a second portion of the search space budget and / or CORESET budget may be allocated to the DL subband.

[0093] In some embodiments, the search space budget is at most 10 search spaces per BWP and / or the CORESET budget is at most 3 CORESETs per BWP. Additionally or alternatively, for user equipment 102, the search space budget is at most 40 search spaces per cell and / or the CORESET budget is at most 12 CORESETs per cell. If coresetPoolIndex is not provided for the first CORESET, or coresetPoolIndex is provided for the first CORESET and has a value of 0 and coresetPoolIndex is provided for the second CORESET and has a value of 1, for user equipment 102, the search space budget is at most 10 search spaces per BWP and the CORESET budget is at most 5 CORESETs per BWP, and / or the search space budget is at most 40 search spaces per cell and the CORESET budget is at most 16 CORESETs per cell. In case of introducing, configuring or supporting a DL subband or an extended SUL carrier with D slots / symbols, and / or in case of configuring an independent or different, second PDCCH configuration for a DL subband or an extended SUL carrier with D slots / symbols, the search space / CORESET budget may be determined according to one of the following ways.

[0094] In a first option, the number of search spaces and / or the number of CORESETs may be at least one of: more than 10 search spaces per BWP, more than 40 search spaces per cell, more than 5 CORESETs per BWP, or more than 16 CORESETs per cell. In some of these embodiments, the search space budget is at most 10 search spaces per BWP and / or at most 40 search spaces per cell, and the CORESET budget has more than 5 CORESETs per BWP and / or more than 16 CORESETs per cell. Specifically, in these embodiments, the DL subband is narrow, i.e., below a threshold frequency range. Additionally or alternatively, in some of these embodiments, the number of CORESETs may be more than 5 per BWP and / or more than 16 per cell, the coresetPoolIndex condition with a different value may be removed, or new RRC signaling may be introduced. In other embodiments, all of the following: the number of search spaces per BWP is more than 10, the number of search spaces per cell is more than 40, the number of CORESETs per BWP is more than 5, and the number of CORESETs per cell is more than 16.

[0095] In a second option, the user equipment 102 may utilize an additional (or another) search space budget and / or CORESET budget for a DL subband (or D resource on a virtual SUL carrier). In some of these embodiments, the search space budget is divided into two parts such that for a total number of search spaces in the search space budget, a first number or portion is used for DL ​​BWPs and a second number or portion is used for DL ​​subbands. Additionally or alternatively, the CORESET budget is divided into two parts such that for a total number of CORESETs in the CORESET budget, a first number or portion is used for DL ​​BWPs and a second number or portion is used for DL ​​subbands. For example, assume that the search space budget for each BWP is at most 10 search spaces. For such a budget, up to 8 search spaces may be allocated for a DL BWP and up to 2 search spaces may be allocated for a DL subband, respectively. In other embodiments, the number of search spaces and / or CORESETs for DL ​​BWPs and DL subbands may be determined or defined separately or independently, regardless of the total number. This may be the case regardless of whether the search space budget per BWP and / or per cell and / or CORESET budget is the same or different than the budget for user equipment not configured with SBFD. In a particular embodiment, the search space budget may be at most 10 search spaces and at most 2 search spaces for DL ​​BWP and DL subband, respectively.

[0096] Additionally or alternatively, the user equipment 102 and / or the network equipment may use one or more blind decoding (BD) / control channel element (CCE) budgets for the DL BWP and the DL subband. In some embodiments, the BD / CCE budget for the DL BWP is also used or applied to the DL subband. This may be the case when the DL BWP and the DL subband are TDMed. And, in some embodiments, when carrier aggregation (CA) is scaled, the DL BWP and the DL subband may be counted as only one cell. In addition, for some embodiments, the BD / CCE budget for the DL BWP of a cell configured with SBFD may be higher than the BD / CCE budget for a cell not configured with SBFD. In a specific embodiment, the BD / CCE budget may be higher when the DL BWP and the DL subband are FDMed. In various embodiments, the BD / CCE budget for a cell configured with SBFD may be the same as the BD / CCE budget for a cell not configured with SBFD. Regardless of whether the BD / CCE budget is higher, in various embodiments, when the BD / CCE budget of a cell configured with SBFD has a total number of BDs or a total number of CCEs, the total number may be split or divided between the DL BWP and the DL subbands. And the number of blind decodings. In other embodiments, the BD / CCE budget of a cell configured with SBFD may be doubled relative to the BD / CCE budget of a cell not configured with SBFD, and thus be considered doubled as two carriers. In other embodiments, the BD / CCE budget of a cell configured with SBFD may have independent values ​​for DL ​​subbands, and / or a subband may be counted as one or two cells for the purpose of carrier aggregation (CA) scaling.

[0097] Furthermore, in various embodiments, the BD / CCE budget is at most PDCCH candidates or at most That is, for each scheduled cell, the user equipment 102 does not need to monitor more than 100 non-overlapping CCEs per time slot on the active DL BWP with subcarrier spacing (SCS) configuration μ of the scheduling cell. PDCCH candidates or more non-overlapping CCEs. In addition, similar to the budget per time slot described above, there is also a budget per span or a budget per N time slots. If coresetPoolIndex is not provided for the first CORESET, or is provided for the first CORESET and has a value of 0 and coresetPoolIndex is provided for the second CORESET and has a value of 1, then the BD / CCE budget can be up to PDCCH candidates or at most non-overlapping CCEs. If the user equipment 102 does not report pdcch-Blind Detection CA (pdcch-blind detection CA) or is not provided with BDFactorR (BD factor R), γ=R; or, if the user equipment 102 reports pdcch-Blind Detection CA, the user equipment 102 can be indicated by BDFactorR, γ=1 or γ=R; where R is the value reported by the user equipment 102. For example, R=2.

[0098] In the case of introducing, configuring or supporting a DL subband or an extended SUL carrier with D time slots / symbols (which may also be regarded as a second subband), or in the case of configuring an independent or second PDCCH configuration for a DL subband or an extended SUL carrier with D time slots / symbols, the BD / CCE budget may be determined as follows.

[0099] First, the BD / CCE budget is the budget for each time slot, where and As shown in Table 1 and Table 2, and This analysis may also be referred to as CA scaling.

[0100] If the user equipment 102 is configured with downlink cells with DL BWPs with SCS configuration μ, where For each scheduled cell, the user equipment 102 does not need to monitor more than PDCCH candidates or more non-overlapping CCEs, where is the number of configured downlink cells when the user equipment 102 does not provide pdcch-BlindDetectionCA; otherwise, is the value of pdcch-BlindDetectionCA. And, if the user equipment 102 is configured with downlink cells with DL BWP with SCS configuration μ, where The DL BWP of the activated cell is the active DL BWP of the activated cell, and the DL BWP of the deactivated cell is the DL BWP with an index provided by the firstActiveDownlinkBWP-Id of the deactivated cell, then the user equipment 102 does not need to The downlink cell(s) of the scheduling cell(s) monitor more than 100% of the active DL BWP per time slot. PDCCH candidates or more non-overlapping CCEs.

[0101]

[0102] Table 1: Maximum number of monitored PDCCH candidates per slot for DL ​​BWP with SCS configuration μ∈{0,1,2,3} for a single serving cell

[0103]

[0104] Table 2: Maximum non-overlap per time slot of DL BWP with SCS configuration μ∈{0,1,2,3} for a single serving cell

[0105] Number of CCEs

[0106] Also, in some embodiments, the BD / CCE budget is per slot for the DL BWP of the cell.Since the DL subband (or D resource on a virtual SUL carrier) is located in the UL BWP (or virtual SUL carrier), the BD / CCE budget may be set according to one of the following options.

[0107] In the first option, the BD / CCE budgets of the DL BWP and the DL subband may be the same or have the same number of BDs and / or non-overlapping CCEs. In some embodiments, the BD / CCE budget of the DL BWP of a cell configured with SBFD is the same as the BD / CCE budget of a cell not configured with SBFD. Additionally or alternatively, when the DL BWP and the DL subband are TDM, the BD / CCE budget used for or applied to the DL subband is also used for or applied to the DL subband. In other embodiments, the DL BWP and the DL subband may have separate or independent BD / CCE budgets. For example, a DL subband may have a smaller BD / CCE budget (one or both of the BD or number of CCEs is lower) than the DL BWP. Additionally or alternatively, in order to and Calculation, the carrier including DL BWP and DL subband can be counted as one cell when CA is scaled.

[0108] In the second option, the BD / CCE budget of the DL BWP in the cell configured with SBFD may be greater than the BD / CCE budget of the DL BWP in the cell not configured with SBFD. Specifically, in these embodiments, in the cell configured with SBFD, the DL BWP and the DL subband are FDMed. And, in some embodiments, the BD / CCE budget may be partitioned for the DL BWP and the DL subband, so that the total amount of the BD / CCE budget may be partitioned or divided into two parts or quantities, including a first part or quantity for the DL BWP and a second part or quantity for the DL subband. Specifically, in these embodiments, the first part and the second part may overlap in the time domain. In addition, in some embodiments, the partitioning may be hard partitioning or soft partitioning, wherein the partitioning factor may be predefined or configured. In other embodiments, the DL BWP and the DL subband may be doubled into two carriers, so that the BD / CCE budget is doubled relative to the BD / CCE budget of the BWP only. This doubled BD / CCE budget may be determined when the DL BWP and the DL subband are FDMed. In other embodiments, the DL BWP and the DL subband may have independent BD / CCE budgets. In some cases, the BD value and / or CCE value of the DL subband may be smaller than the DL BWP. Additionally or alternatively, in order to and Calculation, the carrier including the DL BWP and the DL subband can be counted as 1 or 2 cells when CA is scaled. In some embodiments, the DL BWP and the DL subband are counted as one cell, for example, if the BD / CCE budget is the same as the BD / CCE budget of the DLBWP not configured with SBFD. Specifically, in these embodiments, the DL BWP configured with SBFD and the BWP not configured with SBFD have the same SCS and / or the same time slot / span. In other embodiments, the DL BWP and the DL subband are counted as R cells. In some of these embodiments, when M_max is doubled, R=2. In other embodiments of these embodiments, when the user equipment 102 uses an independent BD / CCE budget for the DL subband, R=1 or 2. In still other embodiments, in the case where the DL BWP and the DL subband have different SCSs, if the cell including the DL subband is a scheduling cell, then according to the above description, the cell is counted to each SCS separately, and the DL BWP and the DL subband are counted as one cell or R cells. And, if the cell including the DL subband is a scheduled cell, the DL BWP and the DL subband are counted as one cell or R cells according to the above description.

[0109] Additionally or alternatively, an overbooking and / or dropping scheme may be applied to the DL subband. This may be the case for embodiments where the DL BWP and DL subband are TDM and a common search space (CSS) type 0 / 0A / 1 / 2 may be configured in the DL subband. In the case where the DL BWP and DL subband are FDM, at least one of the following: the user device 102 may perform dropping of each time slot in a uniform manner when the same SCS and / or the same USS index is shared between the DL BWP and the DL subband; the user device 102 may perform dropping of each time slot independently for the DL BWP and the DL subband, or only allow dropping of each time slot for the DL BWP; or the user device 102 may perform dropping of each time slot in a uniform manner and additionally according to the order of the DL BWP and / or the DL subband, for example, when the USS index is independent between the DL BWP and the DL subband.

[0110] In some embodiments, overbooking is allowed only on the primary cell (PCell), and PDCCH candidate discarding is performed on each USS. That is, all PDCCH candidates in the CSS will be monitored and not discarded, and if the total number of candidates combined with the USS is not greater than the BD / CCE budget when arranged in ascending order of the USS index per time slot, the PDCCH candidates in the USS will also be monitored and not discarded. Similarly, the user equipment 102 can perform PDCCH discarding per span or every X time slots. In the case of introducing, configuring or supporting a DL subband or an extended SUL with D time slots / symbols (which can also be regarded as a second subband), and / or in the case of configuring an independent, second PDCCH configuration for a DL subband or an extended SUL with D time slots / symbols, the user equipment 102 and / or the network device 104 can implement overbooking and / or discarding according to one of the following options.

[0111] In the first option, overbooking and / or dropping is applied to the DL BWP and DL subband. This may be the case when the DL BWP and DL subband are TDMed. And, for some of these embodiments, CSS type 0 / 0A / 1 / 2 may be configured in the DL subband.

[0112] In the second option, in the case where the DL BWP and the DL subband are FDM, overbooking / dropping may be applied to the cell including the DL subband according to one of the following schemes. In the first scheme, in the case where the same SCS and USS index are shared between the DL BWP and the DL subband, the user equipment 102 may perform dropping of each time slot in a unified manner. That is, the USS index used in the DL BWP and the DL subband is shared, which means that the index may be configured in the DL BWP or the DL subband. In other embodiments, the user equipment 102 performs dropping for the DL BWP and the DL subband independently, or only allows or performs dropping for the DL BWP. That is, the user equipment 102 may perform dropping of each time slot on each subband separately or independently of each other. In some embodiments, the BD / CCE budget and / or USS index are defined separately on each subband or for each subband. Specifically, in these embodiments, different subbands may have different SCSs. For example, overbooking may only be performed on the DL BWP or one subband, while overbooking on another DL subband is not allowed. As another example, if CSS type 0 / 0A / 1 / 2 can be configured on both subbands, both subbands can be overbooked. In other embodiments, the user equipment 102 can use the additional order of DL BWP and / or DL ​​subbands to perform the discarding of each time slot in a unified manner. For at least some of these embodiments, the USS index is independent between the DL BWP and the DL subband. It is worth noting that in various embodiments, the DL BWP and the DL subband can be considered or regarded as two DL subbands. Specifically, in these embodiments, a shared BD / CCE budget is used for the two DL subbands. For some of these embodiments, the two DL subbands are configured with the same SCS. For at least some of these embodiments, for the first discarding scheme, the first discarding order between the two DL subbands may include: first, performing the discarding on the DL subband, and then performing the discarding on the DL BWP. The second discarding order between the two DL subbands may include: first, performing the discarding on the DL BWP, and then performing the discarding on the DL subband. In the second discarding scheme, the discarding order may be between the USS sets on the two virtual carriers. For example, several USS sets including at least one USS are configured on each DL subband, and then discarding is performed in ascending order according to the USS set index.

[0113] Therefore, SBFD using one or more UL subbands and / or one or more DL subbands can achieve better performance in terms of reducing delay and improving capacity. In addition, in the case of using independent PDCCH configurations for two DL subbands or DL ​​BWP and DL subbands, and using the second PDCCH configuration of the DL subband to determine one or more fields of the DCI for scheduling the DL subband, in order not to increase UE complexity, the BD / CCE budget and / or PDCCH candidate discarding can be the same as that of a cell not configured for SBFD, and / or a splitting mechanism can be adopted.

[0114] The above description and accompanying drawings provide specific exemplary embodiments and implementations. However, the described subject matter can be embodied in various different forms, and therefore, the subject matter covered or claimed is intended to be interpreted as not being limited to any exemplary embodiment set forth herein. It is intended to provide a reasonably broad scope for the subject matter claimed or covered. Among other items, for example, the subject matter can be embodied as a method, device, component, system, or non-transient computer-readable medium for storing computer code. Therefore, the embodiment can, for example, take the form of hardware, software, firmware, storage medium, or any combination thereof. For example, the method embodiment described above can be implemented by a component, device, or system including a memory and a processor by executing a computer code stored in the memory.

[0115] Throughout the specification and claims, in addition to the explicitly stated meanings, terms may have implied or implicit nuanced meanings in the context. Likewise, the phrase "in one embodiment / implementation" as used herein does not necessarily refer to the same embodiment, and the phrase "in another embodiment / implementation" as used herein does not necessarily refer to a different embodiment. For example, the claimed subject matter is intended to include combinations of all or part of the exemplary embodiments.

[0116] Typically, terms can be understood at least in part based on usage in context. For example, terms such as "and", "or" or "and / or" as used herein can include a variety of meanings that can depend at least in part on the context in which such terms are used. Typically, "or", if used for an association list (such as A, B or C), is intended to represent A, B and C (here for inclusive meanings) as well as A, B or C (here for exclusive meanings). In addition, the term "one or more" as used herein, at least in part depending on the context, can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Similarly, terms such as "a", "an" or "the" can be understood to convey singular usage or to convey plural usage, which depends at least in part on the context. In addition, the term "based on" can be understood to not necessarily be intended to convey an exclusive set of factors, but can instead allow the presence of additional factors that do not have to be explicitly described, again, at least in part depending on the context.

[0117] References to features, advantages, or similar language anywhere in this specification do not mean that all features and advantages that can be implemented with the present technical solution are included or should be included in any single implementation thereof. Rather, language referring to features and advantages is understood to mean that specific features, advantages, or characteristics described in conjunction with the embodiments are included in at least one embodiment of the present technical solution. Therefore, discussions of features and advantages and similar language anywhere in this specification may, but do not necessarily, refer to the same embodiment.

[0118] In addition, the described features, advantages and characteristics of the technical solution can be combined in any suitable manner in one or more embodiments. In view of the description herein, a person of ordinary skill in the relevant art will recognize that the technical solution can be practiced without one or more specific features or advantages of a particular embodiment. In other examples, additional features and advantages that may not be present in all embodiments of the technical solution may be found in certain embodiments.

[0119] The subject matter of the present disclosure may also relate to or include, among other things:

[0120] A first aspect includes a method for wireless communication, the method comprising: receiving, by a user equipment, a first PDCCH configuration for a DLBWP and a second PDCCH configuration for a first subband within a UL BWP or within the DL BWP; and receiving, by the user equipment, a PDCCH in the first subband according to the second PDCCH configuration, or sending, by the user equipment, an UL transmission in the ULBWP or in the second subband.

[0121] A second aspect includes a method for wireless communication, the method comprising: determining, by a network device, a first PDCCH configuration for a DLBWP and a second PDCCH configuration for a first subband within a UL BWP or within the DL BWP; and sending, by the network device, a PDCCH in the first subband according to the second configuration, or receiving, by the network device, a UL transmission in the UL BWP or in the second subband.

[0122] The third aspect includes any one of the first aspect or the second aspect, and further includes, wherein the first subband includes a DL subband or a flexible subband, and the second subband includes a UL subband or a flexible subband.

[0123] The fourth aspect includes any one of the first to third aspects, and further includes, wherein the first PDCCH configuration and the second PDCCH configuration are the same PDCCH configuration.

[0124] The fifth aspect includes the fourth aspect, and further includes, wherein the same PDCCH configuration indicates at least one of the following: an independent control resource set (CORESET) or an independent search space for the first subband and the DL BWP.

[0125] The sixth aspect includes the fifth aspect, and further includes: wherein a CORESET for the PDCCH in the DL subband is configured within the DL BWP, the UL BWP or the first subband.

[0126] The seventh aspect includes the fourth aspect, and further includes, wherein the same PDCCH configuration indicates at least one of the following: the same control resource set (CORESET) or the same search space for the DL BWP and the first subband.

[0127] The eighth aspect includes the seventh aspect and further includes, wherein a conflict between a monitoring opportunity (MO) and a UL resource with the UL BWP causes the user equipment to overwrite one of the MO and the UL resource to prioritize the other of the MO and the UL resource.

[0128] The ninth aspect includes the fourth aspect, and further includes, wherein the same downlink control information (DCI) format is used for the DL BWP and the DL transmission in the first subband.

[0129] The tenth aspect includes the ninth aspect, and further includes, wherein the same DCI format includes a bandwidth part indicator, the bandwidth part indicator indicating whether the DL BWP or the UL BWP is switched, or the field is reserved for subband scheduling.

[0130] An eleventh aspect includes any one of the first or second aspect, and further includes, wherein the first PDCCH configuration and the second PDCCH configuration are different configurations.

[0131] The twelfth aspect includes the eleventh aspect, and further includes, wherein the second PDCCH configuration determines one or more fields in a downlink control information (DCI) format for scheduling DL transmission in the first subband.

[0132] The thirteenth aspect includes the twelfth aspect, and further includes, wherein the DCI format includes an indication indicating whether the DCI format is for the first subband or for the DL BWP.

[0133] The fourteenth aspect includes any one of the twelfth aspect or the thirteenth aspect, and further includes, wherein the total number of different DCI sizes with cell radio network temporary identifier (C-RNTI) monitored by the user equipment is at most four.

[0134] The fifteenth aspect includes the eleventh aspect, and further includes, wherein, at least one of the following: the search space budget for the user equipment includes at least one of the following: more than 10 search spaces per BWP or more than 40 search spaces per cell; the CORESET budget for the user equipment includes at least one of the following: more than 5 CORESETs per BWP or more than 16 CORESETs per cell; the search space budget includes a first part for the DL BWP and a second part for the DL subband; or the CORESET budget includes a first part for the DL BWP and a second part for the DL subband.

[0135] The sixteenth aspect includes the eleventh aspect, and further includes, wherein, when the DL BWP and the DL subband are time division multiplexed, a blind decoding budget or a control channel element (CCE) budget is the same for the DL BWP and the DL subband.

[0136] The seventeenth aspect includes the sixteenth aspect and further includes, wherein for carrier aggregation scaling, the DLBWP and the DL subband are counted as only one cell.

[0137] The eighteenth aspect includes the eleventh aspect, and further includes, wherein the blind decoding budget or control channel element (CCE) budget includes a first portion for the DL BWP and a second portion for the DL subband.

[0138] The nineteenth aspect includes the eighteenth aspect and further includes, wherein for carrier aggregation scaling, the DL subband is counted as one or more cells.

[0139] The twentieth aspect includes the eleventh aspect, and further includes, wherein the user equipment performs discarding of each time slot for the DL BWP and the DL subband, wherein the discarding of each time slot includes one of the following: when the subcarrier spacing (SCS) and the user equipment-specific search space (USS) are shared between the DL BWP and the DL subband, discarding each time slot is performed in a unified manner; discarding each time slot for the DL BWP and the DL subband is performed independently of each other; discarding each time slot for the DL BWP but not for the DL subband; or when the DL BWP and the DL subband have independent UE-specific search spaces (USSs), discarding each time slot for the DL BWP and the DL subband is performed in a unified manner and according to a predetermined order.

[0140] A twenty-first aspect includes a method for wireless communication, the method comprising: receiving, by a user equipment, a configuration of a DL subband within a ULBWP; receiving, by the user equipment, a configuration of a UL subband within a DL BWP; and performing, by the user equipment, a DL transmission in the DL subband or a UL transmission in the UL subband.

[0141] A twenty-second aspect includes a method for wireless communication, the method comprising: configuring, by a network device, a DL subband within a UL BWP; configuring, by the network device, a UL subband within the DL BWP; and sending, by the network device, a DL transmission in the DL subband and / or receiving, by the network device, a UL transmission in the UL subband.

[0142] The twenty-third aspect includes any one of the twenty-first aspect or the twenty-second aspect, and further includes, wherein, one of the following: the DL subband and the UL subband have the same center frequency, the same frequency resources and different time resources; the DL subband and the UL subband have the same center frequency, different frequency resources and different time resources; the DL subband and the UL subband have the same frequency resources or different frequency resources and the same time resources; or the time-frequency resources of the DL subband and the UL subband are independently determined by at least one of the network device or the user device.

[0143] The twenty-fourth aspect includes any one of the twenty-first aspect or the twenty-second aspect, and further includes, wherein in response to overlapping resources between the DL subband and the UL subband, a conflict resolution or backoff mechanism is applied.

[0144] The twenty-fifth aspect includes any one of the twenty-first aspect or the twenty-second aspect, and further includes, wherein the frequency resource of at least one of the gap, the DL subband or the UL subband is indicated within the DL BWP or the UL BWP.

[0145] The twenty-sixth aspect includes the twenty-fifth aspect and further includes, wherein at least one gap on one inner side of the resources allocated to the DL subband or the UL subband, or on both inner sides of the resources allocated to the DL subband or the UL subband is determined by an indication.

[0146] A twenty-seventh aspect includes a wireless communication device comprising a processor and a memory, wherein the processor is configured to read code from the memory to implement any one of the first to twenty-sixth aspects.

[0147] A twenty-eighth aspect includes a computer program product comprising a computer-readable program medium, the computer-readable program medium including a code stored thereon, which, when executed by a processor, causes the processor to implement any one of the first to twenty-sixth aspects.

[0148] In addition to the features mentioned in each independent aspect listed above, some examples may show, alone or in combination, optional features mentioned in the dependent aspects and / or as disclosed in the above description and shown in the drawings.

Claims

1. A method for wireless communication, the method comprising: Receiving, by a user equipment, a first physical downlink control channel (PDCCH) configuration for a downlink DL bandwidth part (BWP) and a second PDCCH configuration for a first subband within an uplink UL BWP or within the DL BWP; as well as A PDCCH is received by the user equipment in the first subband according to the second PDCCH configuration, or a UL transmission is sent by the user equipment in the UL BWP or in a second subband.

2. A method for wireless communication, the method comprising: The network device determines a first physical downlink control channel PDCCH configuration for a downlink DL bandwidth part BWP and a second PDCCH configuration for a first subband within an uplink UL BWP or within the DL BWP; as well as A PDCCH is sent by the network device in the first subband according to the second configuration, or a UL transmission is received by the network device in the UL BWP or in a second subband.

3. The method according to claim 1 or 2, wherein: The first subband includes a DL subband or a flexible subband, and the second subband includes a UL subband or a flexible subband.

4. The method according to claim 1 or 2, wherein: The first PDCCH configuration and the second PDCCH configuration are the same PDCCH configuration.

5. The method according to claim 4, wherein: The same PDCCH configuration indicates at least one of the following: an independent control resource set CORESET or an independent search space for the first subband and the DL BWP.

6. The method according to claim 5, wherein: A CORESET for the PDCCH in the DL subband is configured in the DL BWP, the UL BWP, or the first subband.

7. The method according to claim 4, wherein: The same PDCCH configuration indicates at least one of the following: a same control resource set CORESET or a same search space for the DL BWP and the first subband.

8. The method according to claim 7, wherein: The conflict between the monitoring opportunity MO and the UL resource with the UL BWP causes the user equipment to override one of the MO and the UL resource to preferentially support the other of the MO and the UL resource.

9. The method according to claim 4, wherein: The same downlink control information DCI format is used for the DL BWP and the DL transmission in the first subband.

10. The method according to claim 9, wherein: The same DCI format includes a bandwidth part indicator indicating whether the DL BWP or the UL BWP is switched or a field thereof is reserved for subband scheduling.

11. The method according to claim 1 or 2, wherein: The first PDCCH configuration and the second PDCCH configuration are different configurations.

12. The method according to claim 11, wherein: The second PDCCH configuration determines one or more fields in a downlink control information (DCI) format for scheduling DL transmission in the first subband.

13. The method according to claim 12, wherein: The DCI format includes an indication indicating whether the DCI format is for the first subband or for the DL BWP.

14. The method according to claim 12, wherein: The total number of different DCI sizes with a cell radio network temporary identifier C-RNTI monitored by the user equipment is at most four.

15. The method according to claim 11, wherein: At least one of the following: The search space budget for the user equipment includes at least one of the following: more than 10 search spaces per BWP or more than 40 search spaces per cell; The CORESET budget for the user equipment includes at least one of the following: more than 5 CORESETs per BWP or more than 16 CORESETs per cell; The search space budget comprises a first portion for the DL BWP and a second portion for the DL subband; or The CORESET budget includes a first portion for the DL BWP and a second portion for the DL subband.

16. The method according to claim 11, wherein: When the DL BWP and the DL subband are time division multiplexed, a blind decoding budget or a control channel element CCE budget is the same for the DL BWP and the DL subband.

17. The method according to claim 16, wherein: For carrier aggregation scaling, the DL BWP and the DL subband are counted as only one cell.

18. The method according to claim 11, wherein: The blind decoding budget or control channel element CCE budget comprises a first part for the DL BWP and a second part for the DL subband.

19. The method according to claim 18, wherein: For carrier aggregation scaling, the DL subband is counted as one or more cells.

20. The method according to claim 11, wherein: The user equipment performs per-time slot dropping for the DL BWP and the DL subband, wherein the per-time slot dropping includes one of the following: When a subcarrier spacing SCS and a user equipment specific search space USS are shared between the DL BWP and the DL subband, dropping of each time slot is performed in a unified manner; For the DL BWP and the DL subband, dropping each time slot is performed independently of each other; performing per-slot dropping for the DL BWP but not for the DL subband; or When the DL BWP and the DL subband have independent user equipment UE-specific search spaces USS, the dropping of each time slot is performed for the DL BWP and the DL subband in a unified manner and according to a predetermined order.

21. A method for wireless communication, the method comprising: Receiving, by the user equipment, a configuration of a downlink DL subband within an uplink UL bandwidth part BWP; Receiving, by the user equipment, a configuration of a UL subband within a DL BWP; and DL transmission in the DL subband or UL transmission in the UL subband is performed by the user equipment.

22. A method for wireless communication, the method comprising: The network device configures the downlink DL subband in the uplink UL bandwidth part BWP; The network device configures a UL subband within a DL BWP; as well as DL transmissions are sent by the network device in the DL sub-band and / or UL transmissions are received by the network device in the UL sub-band.

23. The method according to claim 21 or 22, wherein: One of the following: The DL subband and the UL subband have the same center frequency, the same frequency resources and different time resources; The DL subband and the UL subband have the same center frequency, different frequency resources and different time resources; The DL subband and the UL subband have the same frequency resources or different frequency resources and the same time resources; or The time-frequency resources of the DL sub-band and the UL sub-band are independently determined by at least one of the network device or the user equipment.

24. The method according to claim 21 or 22, wherein: In response to overlapping resources between the DL subband and the UL subband, a contention resolution or backoff mechanism is applied.

25. The method according to claim 21 or 22, wherein: A frequency resource of at least one of a gap, the DL subband, or the UL subband is indicated within a DL BWP or a UL BWP.

26. The method according to claim 25, wherein: At least one gap on one inner side of the resources allocated to the DL subband or the UL subband, or on both inner sides of the resources allocated to the DL subband or the UL subband is determined by an indication.

27. A wireless communication device, comprising a processor and a memory, wherein: The processor is configured to read code from the memory to implement the method according to any one of claims 1 to 26.

28. A computer program product comprising a computer readable program medium, the computer readable program medium comprising code stored thereon, the code, when executed by a processor, causing the processor to implement the method according to any one of claims 1 to 26.

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