Communication based on configuration of SBFD-related subband

Abstract

The present document relates to a method by which a user equipment (UE) configures an SBFD-related subband and performs communication with a network on the basis of same, and an apparatus therefor. A communication method for a UE therefor comprises: receiving, from a network, configuration information for an active bandwidth part (BWP); receiving first full duplex (FD)-related subband configuration information based on the configuration information for the active BWP; and performing communication with the network through FD-related subbands according to the configuration information for the active BWP and the first FD-related subband configuration information, wherein, from among the FD-related subbands, only one uplink subband is configured in a specific FD-related symbol.

Description

Communication based on SBFD-related subband settings

[0001] The following description relates to SBFD (Sub-Band Full Duplex)-based communication, and more specifically, to a method and device for a user equipment (UE) to set an SBFD-related subband and perform communication with a network based on the same.

[0002] In wireless communication systems, various technologies are used, such as LTE, LTE-Advanced, and WiFi, and 5G is also included.

[0003] Figure 1 shows the structure of a system for 5G communication.

[0004] Referring to FIG. 1, a Next Generation - Radio Access Network (NG-RAN) may include a base station (20) that provides user plane and control plane protocol termination to a UE (10). For example, the base station (20) may include a next generation Node B (gNB) and / or an evolved Node B (eNB). For example, the UE (10) may be fixed or mobile, and may be referred to by other terms such as a terminal, a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device, etc. For example, the base station may be a fixed station that communicates with the UE (10), and may be referred to by other terms such as a base transceiver system (BTS), an access point, etc.

[0005] The example of Fig. 1 illustrates a case that includes only gNB. The base stations (20) can be connected to each other via Xn interfaces. The base stations (20) can be connected to a 5th generation core network (5G Core Network: 5GC) via an NG interface. More specifically, the base station (20) can be connected to an access and mobility management function (AMF) (30) via an NG-C interface, and can be connected to a user plane function (UPF) (30) via an NG-U interface.

[0006]

[0007] Meanwhile, 5G is giving rise to new service types, such as XR (Extended Reality), AI-based services, and self-driving cars. These services feature dynamic traffic in both downlink and uplink directions, and require low latency for packet transmission. To support these diverse new use cases, 5G services could experience explosive growth in traffic load.

[0008] On the other hand, existing semi-static or dynamic TDD UL / DL configurations may have limitations due to transmission delay and interference between operators. Existing FDD schemes may also have limitations in terms of efficient frequency resource utilization in the DL / UL directions. Therefore, the introduction of full duplex (FD) operation within a single carrier is being discussed to achieve low latency and efficient resource utilization in NR.

[0009] In order to solve the above-described problem, one aspect of the present invention proposes a SBFD (Sub-Band Full Duplex)-based communication method applicable to 5G or subsequent next-generation mobile communication systems.

[0010] The technology proposed below is assumed to be applicable not only to the current 5G system but also to 6G and subsequent mobile communication systems. Therefore, the term 'SBFD' used in 5G may be referred to as another term related to FD, but for the convenience of explanation below, the term of 5G will be used for the explanation.

[0011] In one aspect of the present invention, a method and a device therefor are proposed for efficiently configuring an FD-related subband (SBFD subband) for a UE by a network based on configuration information for an activated BWP (Bandwidth Part).

[0012] In addition, according to an embodiment, when setting the FD-related subband (SBFD subband) as cell-specific configuration information, it is intended to specify whether to set it in an additional user-specific manner (UE specific) and the relationship between them.

[0013] In addition, depending on the embodiment, it is intended to specifically specify how to set two or more uplink subbands according to the configuration information for BWP (Bandwidth Part) and cell-specific configuration information, or how to set FD-related subbands when the uplink subbands are not set.

[0014] The problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0015] In one aspect of the present invention for solving the above-described problem, a method for a user equipment (UE) to perform communication with a network in a mobile communication system is proposed, the method including: receiving configuration information for an activated bandwidth part (BWP) from the network; receiving first full duplex (FD)-related subband configuration information based on the configuration information for the activated BWP; and performing communication with the network through an FD-related subband according to the configuration information for the activated BWP and the first FD-related subband configuration information, wherein among the FD-related subbands, only one subband is configured as an uplink subband in a specific FD-related symbol.

[0016] In another aspect of the present invention for solving the above-described problem, a method for a network to perform communication with a user equipment (UE) in a mobile communication system is proposed, the method including: transmitting configuration information for an activated bandwidth part (BWP) to the UE; transmitting first full duplex (FD)-related subband configuration information based on the configuration information for the activated BWP to the UE; and performing communication with the UE through an FD-related subband according to the configuration information for the activated BWP and the first FD-related subband configuration information, wherein among the FD-related subbands, only one subband is configured as an uplink subband in a specific FD-related symbol.

[0017] In another aspect of the present invention for solving the above-described problem, a user equipment (UE) for performing communication with a network in a mobile communication system is proposed, the UE comprising: at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations, the operations including: receiving configuration information for an activated bandwidth part (BWP) from the network; receiving first full duplex (FD)-related subband configuration information based on the configuration information for the activated BWP; and performing communication with the network through an FD-related subband according to the configuration information for the activated BWP and the first FD-related subband configuration information, wherein among the FD-related subbands, only one subband is configured as an uplink subband in a specific FD-related symbol.

[0018] In another aspect of the present invention for solving the above-described problem, a network for performing communication with a user equipment (UE) in a mobile communication system is proposed, the network comprising: at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations, the operations including: transmitting configuration information for an activated bandwidth part (BWP) to the UE; transmitting first full duplex (FD)-related subband configuration information based on the configuration information for the activated BWP to the UE; and performing communication with the UE through an FD-related subband according to the configuration information for the activated BWP and the first FD-related subband configuration information, wherein among the FD-related subbands, only one subband is configured as an uplink subband in a specific FD-related symbol.

[0019] The above FD-related subbands include SBFD (Sub-Band Full Duplex) subbands, but this does not exclude the possibility that the terminology may change in 6G and other standards.

[0020] The above first FD-related subband configuration information may be cell-specific configuration information, and the cell-specific configuration information may indicate an offset value compared to a reference resource block of configuration information for the activated BWP, and the number of resource blocks of the FD-related subband.

[0021] If a user-specific setting for the above FD-related subband is not supported, the FD-related subband may be determined as an overlapping area of ​​the setting information for the activated BWP and the first FD-related subband setting information.

[0022] The above reference resource block may include a first reference resource block for the uplink subband among the FD-related subbands, and a second reference resource block for the downlink subband among the FD-related subbands.

[0023] When the FD-related subband according to the setting information for the above-mentioned activated BWP and the first FD-related subband setting information sets two or more uplink subbands in the specific FD-related symbol, an uplink subband with a higher priority among the two or more uplink subbands can be set as the one subband.

[0024] At this time, the priority may be determined by one or more of the size of the uplink subband bandwidth, the frequency position of the uplink subband, or the instruction information received from the network.

[0025] If the FD-related subband according to the configuration information for the above-mentioned activated BWP and the first FD-related subband configuration information is not configured in the specific FD-related symbol, the method may further include receiving second FD-related subband configuration information from the network and configuring the FD-related subband according to the second FD-related subband configuration information. In this case, the second FD-related subband configuration information may be UE-specific configuration information.

[0026] The above second FD-related subband configuration information may indicate an offset value compared to a reference resource block of configuration information for the activated BWP, and the number of resource blocks of the FD-related subband.

[0027] In addition, the second FD-related subband setting information can set the FD-related subband in a bitmap manner corresponding to a resource block according to the setting information for the activated BWP.

[0028] According to the embodiments of the present invention as described above, an SBFD-based communication method applicable to 5G or subsequent next-generation mobile communication systems can be implemented.

[0029] Specifically, when the network configures an FD-related subband (SBFD subband) to a UE, it can efficiently configure it based on configuration information for an activated BWP (Bandwidth Part).

[0030] Additionally, depending on the embodiment, when FD-related subbands (SBFD subbands) are set as cell-specific configuration information, more flexible resource utilization is possible by utilizing additional user-specific configurations.

[0031] Additionally, depending on the embodiment, two or more uplink subbands may be set according to the configuration information for BWP and cell-specific configuration information, or if no uplink subbands are set, they may be specified in a user-specific manner, thereby clearly defining the operation of the UE / network.

[0032] The effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention belongs from the description below.

[0033] Figure 1 shows the structure of a system for 5G communication.

[0034] Figure 2 is a drawing for explaining a method of performing FD operation in 5G.

[0035] FIG. 3 and FIG. 4 are drawings for comparing and explaining SBFD and SSFD during FD operation in 5G.

[0036] FIG. 5 is a diagram for explaining a method in which a UE and a network perform communication based on FD-related subband settings according to one embodiment of the present invention.

[0037] FIG. 6 is a diagram for explaining TDD UL-DL pattern setting according to one embodiment of the present invention.

[0038] FIG. 7 is a diagram for explaining SBFD symbol settings considering a TDD UL-DL pattern according to one embodiment of the present invention.

[0039] FIG. 8 and FIG. 9 are drawings specifically explaining the concept of an activated BWP according to one embodiment of the present invention.

[0040] FIG. 10 is a diagram for explaining a method for specifying cell-specific configuration information for SBFD subband configuration according to a first aspect of the present invention.

[0041] FIG. 11 is a diagram illustrating a method of utilizing user-specific SBFD settings according to one aspect of the present invention.

[0042] Figure 12 illustrates a wireless device to which the present technology can be applied.

[0043] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In addition, in the drawings, parts irrelevant to the description have been omitted to clearly explain the present invention, and similar parts have been designated with similar reference numerals throughout the specification.

[0044] Throughout the specification, whenever a part is said to "include" a component, this does not mean that it excludes other components, but rather that it may include other components, unless otherwise stated.

[0045]

[0046] As described above, one aspect of the present invention proposes a method and device for a UE to configure SBFD-related symbols / subbands and communicate with a network based on these settings. To this end, the FD method currently being discussed in 5G will be described in detail.

[0047] Figure 2 is a drawing for explaining a method of performing FD operation in 5G.

[0048] Referring to Fig. 2, a method of applying FD operation in an intra-carrier is illustrated. Specifically, the FD operation may be considered to be the Sub-Band Full Duplex (SBFD) method illustrated in Fig. 2 (a) and the Spectrum-Sharing Full Duplex (SSFD) method illustrated in Fig. 2 (b).

[0049] In the case of SBFD, transmission and reception of DL and UL can be performed using different frequency resources on the same carrier. That is, DL and UL can have different frequency resources for the same time resource. In the case of SSFD, transmission and reception of DL and UL are performed using the same frequency resources or overlapping frequency resources on the same carrier. That is, DL and UL can be assigned the same or overlapping frequency resources for the same time resource.

[0050] In the case of SBFD, it may be referred to as 'Subband-Wise Full Duplex' or 'Subband non-overlapping Full Duplex' considering the non-overlapping characteristic that distinguishes it from SSFD.

[0051]

[0052] FIG. 3 and FIG. 4 are drawings for comparing and explaining SBFD and SSFD during FD operation in 5G.

[0053] First, SBFD can be considered in FIG. 3 (a) and FIG. 4 (a). Specifically, referring to FIG. 3 (a), the subband region of the DL and the subband region of the UL may not overlap each other. In this case, a guard band may exist between the subband region of the DL and the subband region of the UL. Alternatively, referring to FIG. 2 (a), the SBFD operation can be performed based on a resource pattern of a cell or base station. For example, in the resource pattern, a half-duplex (HD) slot / symbol and an SBFD slot / symbol can be TDM'd with each other.

[0054] Alternatively, SSFD may be considered as examples such as those in FIG. 3 (b) and FIG. 4 (b). Specifically, referring to FIG. 3 (b), the subband region of the DL and the subband region of the UL may overlap with each other. Alternatively, referring to FIG. 4 (b), the SSFD operation may be performed based on a resource pattern of a cell or base station. For example, in the resource pattern, a half-duplex (HD) slot / symbol and an SSFD slot / symbol may be TDM'd with each other.

[0055]

[0056] These FD operations can be combined with existing half-duplex (HD) operations. For example, in existing half-duplex-based TDD operations, only some time resources can be used for FD operations. In the time resources where FD operations are performed, SBFD or SSFD operations can be performed.

[0057] In the case of the FD operation described above, the FD operation can be performed from both the gNB perspective and the UE perspective. For example, both the gNB and the UE can simultaneously transmit and receive DL / UL using the same or different frequency resources in the same time resource. Alternatively, only the gNB can perform the FD operation (in the same time resource), and the UE can perform the HD operation. The gNB can simultaneously transmit and receive DL and UL using the same or different frequency resources in the same time resource, but the UE can perform only DL reception or only UL transmission in a specific time resource. In this case, the gNB can perform the FD operation in a way that performs DL transmission and UL reception for different UEs at the same time point (or, the same time resource).

[0058] As described above, in a network such as a gNB that performs FD operations, whether a UE can perform FD operations may be related to the UE's performance. Thus, if a UE is aware of and capable of performing FD operations in a network, the UE may be referred to as an "FD-aware UE."

[0059] In addition, among the SBFD and SSFD described above, one embodiment of the present invention proposes an FD operation using the SBFD method. The SBFD method supports HDs that do not overlap with each other in sub-band units, and thus has the advantage of being able to operate flexibly not only from the perspective of SBFD-aware UEs but also from the perspective of legacy UEs that are unaware of the SBFD situation.

[0060]

[0061] Below, a method for performing communication by setting FD-related symbols / subbands (SBFD symbols / subbands) under such background is described.

[0062] FIG. 5 is a diagram for explaining a method in which a UE and a network perform communication based on FD-related subband settings according to one embodiment of the present invention.

[0063] First, the UE (510) can receive (S510) configuration information for an activated BWP (Bandwidth Part) from the network (520).

[0064] Typically, a UE can be configured with up to four BWPs for each uplink (UL) and downlink (DL). Additionally, if a supplementary UL (supplementary UL) is configured for the UE to increase UL coverage, an additional four UL BWPs can be configured. However, only one of these configured BWPs can be activated and utilized at any given time.

[0065] The DL BWP has a bandwidth greater than the transmission bandwidth of the SSB (Synchronization Signal Block), but the DL BWP may not include the SSB. The UE does not expect to receive the PDSCH (Physical Downlink Shared Channel), PDCCH (Physical Downlink Control Channel), CSI-RS (Channel Status Information - Reference Signal), and TRS (Tracking Reference Signal) outside the active DL BWP, thereby reducing the monitoring burden on the UE, reducing the receiving burden on the UE, and saving power consumption.

[0066] Similarly, the UE does not perform transmissions such as Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), etc. outside the active UL BWP.

[0067] The configuration information for the activated BWP as described above can be set in a UE-specific manner.

[0068] Meanwhile, the UE (510) according to the present embodiment can receive first full duplex (FD) related symbol / subband setting information based on setting information for the activated BWP from the network (S520).

[0069] As described above, the FD-related symbols / subbands may correspond to the SBFD (Sub-Band Full Duplex) symbols / subbands discussed in 5G, but the terminology may change in the next-generation communication standard, as described above with reference to FIGS. 2 to 4. However, for convenience of explanation, the symbols / subbands will be referred to as SBFD symbols / subbands hereinafter.

[0070] In one embodiment of the present invention, it is assumed that only one UL SBFD subband is configured in an SBFD symbol specified according to the first SBFD symbol / subband configuration. This UL SBFD subband can be located at one side or the center of a TDD (Time Divisional Duplex) carrier to reduce the transmission burden on the UE.

[0071] In addition, one embodiment of the present invention assumes that the time-frequency location of the SBFD subband within the TDD carrier can be set in a cell-specific manner for an RRC-connected UE. The cell-specific configuration for the frequency location of the SBFD subband can be set separately according to each Subcarrier Spacing (SCS) configuration of the SCS-SpecificCarrierList. For each SCS configuration, a starting PRB can be specified according to the PRB and offset values ​​determined by the SCS configuration.

[0072] The above-described cell-specific SBFD symbol configuration information can be configured by a combination of one or more of upper layer signaling such as RRC or MAC-CE and DCI.

[0073]

[0074] In the embodiment illustrated in FIG. 5, it is proposed that the UE (510) performs communication (S530) with the network (520) through the SBFD subband according to the above-described configuration information (S510) for the activated BWP and the above-described first FD-related subband configuration information (S520). In this case, the meaning of according to the configuration information (S510) for the activated BWP and the first FD-related subband configuration information (S520) is that it assumes that the intersection area of ​​the frequency domain set by both is utilized.

[0075]

[0076] Below, the SBFD symbol / subband specific method according to the above-described embodiment is described in more detail for the time domain and the frequency domain, respectively.

[0077]

[0078] FIG. 6 is a diagram for explaining TDD UL-DL pattern setting according to one embodiment of the present invention.

[0079] Figure 6 shows an example of a TDD UL-DL pattern, where "D" represents a DL slot / symbol, "D / F" represents a DL and variable symbol, "F" represents a variable slot / symbol, "F / U" represents a variable and UL symbol, and "U" represents a UL slot / symbol.

[0080] Such TDD UL-DL pattern information can be configured statically or semi-statically via System Information Block (SIB) 1 and / or Radio Resource Control (RRC) signaling, and can be set in a cell-specific manner and / or a user-specific manner. The top of Fig. 6 illustrates a pattern (610) set via tdd-UL-DL-ConfigurationCommon in a cell-specific manner, the center of Fig. 6 illustrates an additional pattern (620) set via tdd-UL-DL-ConfigurationDedicated in a user-specific manner, and the bottom of Fig. 6 illustrates a resulting pattern (630).

[0081] Additionally, the TDD UL-DL pattern can also be dynamically configured on a group basis or in a UE-specific manner in the form of slot formats by RRC and DCI (e.g., Slot Format Indication (SFI)).

[0082]

[0083] FIG. 7 is a diagram for explaining SBFD symbol settings considering a TDD UL-DL pattern according to one embodiment of the present invention.

[0084] In one embodiment of the present invention, it is assumed that the time-frequency position of an SBFD subband within a TDD carrier can be set in a cell-specific manner for an RRC-connected UE. Such cell-specific SBFD symbol configuration information can be determined based on a TDD UL-DL pattern as illustrated in FIG. 7, and in one embodiment of the present invention, it is proposed that an SBFD symbol can be allocated from the start symbol of the first D slot to the last F symbol in the F / U slot (710).

[0085] The D / F slot may represent a slot structure in which DL symbols and variable symbols are arranged as illustrated in 720 of FIG. 7, and the F / U slot may represent a slot structure in which variable symbols and UL symbols are arranged as illustrated in 730 of FIG. 7.

[0086]

[0087] Meanwhile, in one embodiment of the present invention, when TDD UL-DL pattern information sets a plurality of TDD UL-DL patterns, it is assumed that SBFD symbol setting information is set for each of the plurality of TDD UL-DL patterns.

[0088] If one TDD UL-DL pattern is set, the cell-specific SBFD symbol setting information in the embodiment illustrated in FIG. 7 can set consecutive SBFD symbols as follows based on the TDD UL-DL pattern.

[0089] (1) Information on the position of the starting slot of the SBFD symbol and the starting position of the symbol in that slot, and information on the position of the ending slot of the SBFD symbol and the position of the last SBFD symbol in that slot.

[0090] (2) In addition to the method of (1) above, setting of the SBFD symbol as the start and end positions of the SBFD symbol within the cell-specific slot configuration cycle.

[0091] (3) Location of the starting slot of the SBFD symbol and the starting position information of the symbol in that slot and the number of SBFD symbols allocated consecutively.

[0092] (4) A combination of the position of the starting slot of the SBFD symbol and the starting position information of the symbol in that slot and the number of consecutively allocated SFBF slots and SBFD symbols, for example, the number of slots that are complete SBFD symbols and the number of allocated SBFD symbols in the starting slot and the ending slot of the SBFD symbol.

[0093] Meanwhile, when two TDD-UL-DL patterns are set, it is possible to indicate for each TDD UL-DL pattern the method to be applied to the above-described one pattern.

[0094]

[0095] FIG. 8 and FIG. 9 are drawings specifically explaining the concept of an activated BWP according to one embodiment of the present invention.

[0096] In 5G communication systems, rather than utilizing the entire carrier bandwidth (810), a UE utilizes a specific BWP for UL / DL transmission and reception. FIG. 8 illustrates an example where three BWPs (820a, 820b, and 820c) are configured within the entire carrier bandwidth (810). As described above, a specific UE may be configured with up to four BWPs, but the active BWP utilized by the UE at a given time may be limited to one of these.

[0097] As illustrated in FIG. 8, each BWP can be defined in relation to a reference resource block (PRB (Physical Resource Block)), and the reference PRB can be defined as a CRB (Common Resource Block; 830), which is sometimes referred to as Point A.

[0098] Each BWP can be defined by a frequency distance from the CRB (830) as above, and in Fig. 8, the first BWP is defined by a first offset (N) from the CRB (830). start BWP, 0 ) and start at a position spaced apart by the first size (N size BWP, 0 ) can be defined as having a second offset (N) from the CRB (830). start BWP, 1 ) and start at a position spaced apart by a second size (N size BWP, 1) can be defined as having a third offset (N) from the CRB (830). start BWP, 2 ) and start at a position spaced apart by a third size (N size BWP, 2 ) can be defined as having.

[0099] Meanwhile, these BWPs can be configured in various forms as illustrated in Fig. 9.

[0100] 910 of FIG. 9 illustrates an example of defining BWP 1 within the entire bandwidth and setting BWP 2 for a UE communicating through limited energy consumption within BWP 1, 920 of FIG. 9 illustrates an example of defining two non-contiguous BWPs within the entire bandwidth, 930 of FIG. 9 illustrates a case where bandwidth for another unknown service is used between two non-contiguous BWPs, and 940 of FIG. 9 illustrates an example of defining a BWP for 5G communication within the entire bandwidth and utilizing another bandwidth for a service that has not yet been defined, such as next-generation communication.

[0101]

[0102] Based on the above description, the SBFD subband setting method is specifically described below.

[0103] First, as described above with respect to FIG. 5, the configuration for the SBFD subband can be basically performed in a cell-specific manner, and we would like to specifically specify this cell-specific configuration method.

[0104] In the following description, for convenience of explanation, it is assumed that the SBFD subband setting method is set to one of the two options below or a combination thereof.

[0105]

[0106] Option 1 (Option 1): The UE receives configuration information for the active BWP and cell-specific SBFD subband configuration information from the network, and the available SBFD subbands can utilize their overlapping areas.

[0107] Option 2: Available UL / DL PRBs within the active UL / DL BWP within the SBFD symbol can be explicitly signaled.

[0108]

[0109] First aspect

[0110] FIG. 10 is a diagram for explaining a method for specifying cell-specific configuration information for SBFD subband configuration according to a first aspect of the present invention.

[0111] Cell-specific configuration settings for SBFD UL / DL subbands can be set as follows.

[0112] First, a method can be used in which a specific CRB (CRB0) (1010) used when setting BWP is used as a reference RB, the start position of each subband is indicated by an offset value in RB units based on the reference RB, and the subband range is set by the number of RBs used for each subband.

[0113] At this time, the reference RB may be operated by setting a CRB (e.g., CRB 2 (1020) of FIG. 10) at a specific location for the SBFD subband, rather than the CRB (1010) used in the BWP setting, as the reference RB.

[0114] The above reference RB (1020) may be one RB available for both UL / DL, but a reference RB for setting the UL subband (1060) (e.g., CRB 2 (1020) of FIG. 10) and a reference RB for setting the DL subband (1070) (e.g., CRB 5 (1030) of FIG. 10) may be set and operated, respectively.

[0115] In one embodiment of the present invention, the size of a subband may be set not by the number of RBs but by the position of the ending RB (e.g., CRB3 (1040) and CRB6 (1050) in FIG. 10), and the position of the corresponding RB may be set by an offset value from the reference RB.

[0116] In one embodiment of the present invention, if user-specific settings for SBFD subbands are not supported or provided, it is proposed that SBFD subbands are determined according to the above-described option 1. That is, the SBFD-related subbands can be determined as the intersection of the configuration information for the activated BWP and the cell-specific SBFD subband configuration information.

[0117]

[0118] Second side

[0119] As described above with respect to FIG. 5, it is assumed that only one UL subband is set and used within a specific SBFD symbol.

[0120] However, when specifying the available SBFD subbands by using the overlapping area of ​​the configuration information for the activated BWP and the cell-specific SBFD subband configuration information as in the above-described option 1, the second aspect of the present invention is to specify as follows for cases where two or more UL subbands are configured or no UL subband is configured.

[0121] First, when two UL subbands are set, we propose a method of setting priorities as follows.

[0122] You can set priority and use the subband with the larger BW among the two UL subbands.

[0123] Additionally, priority can be set and used when the frequency location of two UL subbands is specific within the BWP. For example, priority can be given to the central location within the BWP, to the ends, or to the subband containing the lowest or highest RB index.

[0124] Additionally, the priorities can be determined by combining the above-described methods.

[0125] In addition, in case of an overlapping area, unlike the above-described methods, the network (gNB) can explicitly indicate the UL subband by a combination of one or more of upper layer signals such as RRC, MAC-CE (Medium Access Control - Control Element), or DCI (Downlink Control Information).

[0126] Additionally, in the above-described manner, when no network instruction information is received, it is possible to operate by setting a specific subband to be used based on the above-described basic priority.

[0127]

[0128] Next, if the UL subband is not configured, we propose a method for the network to allocate it in a user-specific manner as follows, which is described in more detail below.

[0129]

[0130] Third aspect

[0131] FIG. 11 is a diagram illustrating a method of utilizing user-specific SBFD settings according to one aspect of the present invention.

[0132] In Fig. 11, an example is provided in which the SBFD symbol is set together with the SBFD subband setting, as compared to Fig. 5.

[0133] In FIG. 11, UE (510) can receive TDD UL-DL pattern configuration information from network (520) (S1110). As described above with reference to FIG. 7, SBFD symbols can be configured based on the TDD UL-DL pattern.

[0134] Additionally, the UE (510) can receive (S510) configuration information for the activated BWP from the network (520) as described above with respect to FIG. 5.

[0135] Thereafter, the UE (510) can receive SBFD symbol / subband configuration information from the network (520) (S1120), and FIG. 11 specifically illustrates that the SBFD symbol configuration information received primarily is cell-specific configuration information.

[0136] Meanwhile, in the embodiment illustrated in FIG. 11, it is proposed to receive second FD-related symbol / subband configuration information (S1130) in a user-specific manner in addition to the cell-specific SBFD symbol / subband configuration information (S1120) described above.

[0137] In one embodiment of the present invention, it is proposed to set a specific SBFD symbol / subband in a UE (510) using such user-specific SBFD symbol / subband setting information (S1140), and can be utilized in the case of explicitly setting an SBFD subband in option 2 described above in relation to subband setting.

[0138] User-specific SBFD subband settings can be specifically set as follows:

[0139] The starting PRB for each BWP (which can be set as an offset value from PRB0, CRB0) is used as the reference RB, and the starting position of each available PRB for each DL / UL is indicated by an offset value in RB units, and the range of each DL / UL PRB can be set by the number of consecutive RBs set as each DL / UL PRB.

[0140] At this time, the BWP can be set only for the active BWP, or can be operated by setting it in advance for each BWP.

[0141] The above reference RB can be set based on a specific PRB within a BWP or a specific CRB within a BWP for SBFD subband setup rather than a starting PRB for each BWP.

[0142] The above reference RB can be set by setting a specific CRB as the reference RB within the entire carrier BW without any internal constraints of the BWP.

[0143] In the methods for determining the above reference RBs, the reference RBs may be set differently for each reference RB for setting the available PRBs of DL and for setting the available PRBs of UL.

[0144]

[0145] When configuring available DL PRBs in the above method, multiple DL subbands can be configured within a BWP. Accordingly, configuration of discontinuous available DL PRBs is possible.

[0146] Accordingly, the lowest or highest available DL PRBs can be set, and the positions of the remaining DL user PRBs can be indicated as offset values ​​based on the set values, that is, based on the highest or lowest RB index among the available DL PRBs, and the range of the available DL PRBs can be specified by the number of consecutive RBs.

[0147] Alternatively, a bitmap can be configured with a size equal to the number of RBs in the BWP, and each bitmap can be used to indicate the available UL and DL PRBs.

[0148] In order to reduce the bitmap size, if the bitmap for available DL PRBs is indicated by configuring the number of RBs in the entire BWP, the bitmap for available UL PRBs may also be indicated by configuring the bitmap with all remaining RBs excluding the RBs indicated as available DL PRBs.

[0149] In the third aspect of the present invention, the available PRBs can be set and operated as UL / DL subbands within the BWP, and since the BWP is set in a user-specific manner, this setting for the available PRBs can be viewed as a user-specific SBFD subband configuration method.

[0150]

[0151] Fourth aspect

[0152] The first to third aspects described above are not methods proposed as separate embodiments, but rather define the operation method of the UE and the network according to the status of SBFD-related configuration information. The embodiments of the present invention can utilize a combination of these various aspects.

[0153] For example, after configuring cell-specific SBFD subbands as in the first aspect, the available DL / UL PRBs can be configured and used by applying a user-specific method in the third aspect to indicate which portion (all or part) of the overlapping portion with the active BWP is actually to be used. In this case, this can be seen as an example of utilizing the user-specific settings only in a form that narrows the scope of the cell-specific settings.

[0154] Additionally, as in the first aspect, after cell-specific SBFD subband configuration, the overlapping portion with the active BWP is used as the default, and the additional portion is designated using a user-specific method in the third aspect to configure and use available DL / UL PRBs. In this case, it can be seen as an example where the user-specific settings are utilized only to expand the range of the cell-specific settings.

[0155] Of course, it is also possible to operate by combining the above-described methods, setting some of the overlapping parts with BWP to be used and some not to be used, and setting up and using additional PRBs.

[0156] In this combination method, as a representative example, if two UL subbands or consecutive usable UL PRB groups are set within a BWP according to the method described in the first aspect, it can be used as a method for excluding some of them. At the same time, if the size of the UL subbands or one usable UL PRB group is small, it can also be applied for wider frequency allocation.

[0157] In addition, in this combination method, as a representative example, if too many or too few DL subbands or consecutive available DL PRB groups are set within a BWP, it is possible to adjust the number and apply it to increase or decrease the size of the frequency resource allocated to each subband or available DL PRB group.

[0158]

[0159] Figure 12 illustrates a wireless device to which the present technology can be applied.

[0160] Referring to FIG. 12, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals via various wireless access technologies (e.g., LTE, NR). Here, the first wireless device (100) and the second wireless device (200) can correspond to the UE (510) and the network (520) of FIG. 5, respectively.

[0161] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). In addition, the processor (102) may receive a wireless signal including second information / signal via the transceiver (106), and then store information obtained from signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE E-UTRA, 5G NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In the present invention, a wireless device may also mean a communication modem / circuit / chip.

[0162] The second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). Furthermore, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may store software code including commands for performing some or all of the processes controlled by the processor (202) or for performing the descriptions, functions, procedures, proposals, methods and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE E-UTRA, 5G NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In the present invention, a wireless device may also mean a communication modem / circuit / chip.

[0163] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0164] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and driven by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0165] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0166] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0167]

[0168] The detailed description of the preferred embodiments of the present invention disclosed above has been provided to enable those skilled in the art to implement and practice the present invention. While the above description has been made with reference to preferred embodiments of the present invention, those skilled in the art will appreciate that various modifications and variations can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art can utilize the individual components described in the above-described embodiments in combination with each other.

[0169] Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0170] The method and device for setting an SBFD-related subband by a UE according to the embodiments of the present invention as described above and performing communication with a network based thereon are suitable for use in an SBFD-related communication environment of a 5G system in 3GPP, but can also be used in the same manner in 6G of 3GPP and subsequent next-generation mobile communication systems.

Claims

1. In a method for a user equipment (UE) to communicate with a network in a mobile communication system, Receive configuration information for an activated Bandwidth Part (BWP) from the above network; Receive first full duplex (FD) related subband configuration information based on configuration information for the above-mentioned activated BWP; and Including performing communication with the network through the FD-related subband according to the setting information for the above-mentioned activated BWP and the first FD-related subband setting information, Among the above FD-related subbands, the uplink subband is configured with only one subband in a specific FD-related symbol. UE's communication method.

2. In paragraph 1, The above FD-related subband includes the SBFD (Sub-Band Full Duplex) subband. UE's communication method.

3. In paragraph 1, The above 1st FD related subband setting information is cell specific setting information, The above cell specific setting information is: An offset value compared to the reference resource block of the setting information for the above-mentioned activated BWP, and indicating the number of resource blocks of the above-mentioned FD-related subband, UE's communication method.

4. In paragraph 3, If user-specific settings for the above FD-related subbands are not supported, The above FD related subbands are Determined as an overlapping area of ​​the setting information for the above-mentioned activated BWP and the above-mentioned first FD-related subband setting information, UE's communication method.

5. In paragraph 3, The above reference resource block is, A first reference resource block for the uplink subband among the FD-related subbands, and a second reference resource block for the downlink subband among the FD-related subbands, UE's communication method.

6. In paragraph 1, When the FD-related subband according to the setting information for the above-mentioned activated BWP and the first FD-related subband setting information sets two or more uplink subbands in the specific FD-related symbol, Among the above two or more uplink subbands, the uplink subband with the highest priority is set as the one subband. UE's communication method.

7. In paragraph 6, The above priorities are: Determined by one or more of the size of the uplink subband bandwidth, the frequency location of the uplink subband, or the instruction information received from the network. UE's communication method.

8. In paragraph 1, If the FD-related subband according to the setting information for the above-mentioned activated BWP and the first FD-related subband setting information is not set in the specific FD-related symbol, Additionally comprising receiving second FD-related subband configuration information from the network and configuring an FD-related subband according to the second FD-related subband configuration information. UE's communication method.

9. In paragraph 8, The above 2nd FD related subband setting information is UE-specific setting information. UE's communication method.

10. In paragraph 9, The above 2nd FD related subband setting information is An offset value compared to the reference resource block of the setting information for the above-mentioned activated BWP, and indicating the number of resource blocks of the above-mentioned FD-related subband, UE's communication method.

11. In paragraph 9, The above 2nd FD related subband setting information is Setting the FD-related subband in a bitmap manner corresponding to the resource block according to the setting information for the above-mentioned activated BWP, UE's communication method.

12. In a method for a network to communicate with a user equipment (UE) in a mobile communication system, Transmit configuration information for the activated BWP (Bandwidth Part) to the UE; Transmitting first full duplex (FD) related subband configuration information based on configuration information for the activated BWP to the UE; and Including performing communication with the UE through the FD-related subband according to the setting information for the above-mentioned activated BWP and the first FD-related subband setting information, Among the above FD-related subbands, the uplink subband is configured with only one subband in a specific FD-related symbol. Communication methods in networks.

13. In a user equipment (UE) that performs network communication in a mobile communication system, at least one processor; and At least one computer memory operably connected to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations; The above actions are, Receive configuration information for an activated Bandwidth Part (BWP) from the above network; Receive first full duplex (FD) related subband configuration information based on configuration information for the above-mentioned activated BWP; and Including performing communication with the network through the FD-related subband according to the setting information for the above-mentioned activated BWP and the first FD-related subband setting information, Among the above FD-related subbands, the uplink subband is configured with only one subband in a specific FD-related symbol. User device.

14. In a network that performs communication with a user equipment (UE) in a mobile communication system, at least one processor; and At least one computer memory operably connected to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations; The above actions are, Transmit configuration information for the activated BWP (Bandwidth Part) to the UE; Transmitting first full duplex (FD) related subband configuration information based on configuration information for the activated BWP to the UE; and Including performing communication with the UE through the FD-related subband according to the setting information for the above-mentioned activated BWP and the first FD-related subband setting information, Among the above FD-related subbands, the uplink subband is configured with only one subband in a specific FD-related symbol. network.

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