Data transmission / reception method and device

Abstract

An embodiment of the present invention provides a data transmission and reception method and device, which includes: a first receiver for receiving downlink control information (DCI) in a first cell, where the DCI is used for scheduling a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell, and a transceiver for receiving the PDSCH and / or transmitting the PUSCH in the at least two cells.

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE The present invention relates to the field of communications technology. [Background technology]

[0002] A Physical Downlink Shared Channel (PDSCH) is one of the physical downlink channels in a wireless communication system and is used to carry downlink data. A Physical Uplink Shared Channel (PUSCH) is one of the physical uplink channels in a wireless communication system and is used to carry uplink data. The PDSCH and PUSCH may be scheduled by downlink control information (DCI). In the current new radio (NR) system, multiple DCI formats are defined for scheduling the PDSCH or PUSCH. To meet different scheduling requirements, the specific information and / or size included in the DCI of different DCI formats are different.

[0003] The above description of the background art is merely for the purpose of more clearly and completely explaining the configurations of the present invention and for the understanding of those skilled in the art, and should not be construed as meaning that these configurations are well known to those skilled in the art just because they are described in the background art of the present invention. Summary of the Invention [Problem to be solved by the invention]

[0004] Currently, radio resource control configures a carrier (cell) to perform self-scheduling or cross-carrier scheduling. Self-scheduling means that the PDSCH and / or PUSCH on a carrier is scheduled by the DCI transmitted on the carrier. Cross-carrier scheduling means that the PDSCH and / or PUSCH on a carrier (cell) is scheduled by the DCI transmitted on another carrier (cell).

[0005] Currently, DCI only supports scheduling one serving cell (at a time), including the cases of self-scheduling and cross-carrier scheduling. In order to reduce the burden of DCI monitoring on the terminal device and reduce power consumption and complexity, the NR system supports scheduling PDSCHs and / or PUSCHs of multiple serving cells via one DCI, but currently there is no specific scheme on how to support scheduling PDSCHs and / or PUSCHs of multiple serving cells via one DCI (e.g., how to indicate / determine one or more serving cells scheduled by one DCI, etc.).

[0006] In view of at least one of the above problems, embodiments of the present invention provide a method and apparatus for transmitting and receiving data. [Means for solving the problem]

[0007] One aspect of an embodiment of the present invention provides a data transmission / reception device, which is applied to a terminal device, including: a first receiving unit that receives downlink control information (DCI) in a first cell, the DCI being used to schedule a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell; and a transceiver unit that receives the PDSCH and / or transmits the PUSCH in the at least two cells.

[0008] Another aspect of an embodiment of the present invention provides a data transmission / reception device, which is applied to a network device, including: a first transmitter unit that transmits downlink control information (DCI) in a first cell, the DCI being used to schedule a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell; and a second transceiver unit that transmits the PDSCH and / or receives the PUSCH in the at least two cells.

[0009] Another aspect of the present invention provides a communication system including a terminal device and / or a network device, wherein the terminal device includes a data transmission / reception device of the above aspect, and the network device includes a data transmission / reception device of the above aspect.

[0010] One of the advantageous effects of the embodiment of the present invention is as follows: It is possible to support scheduling PDSCHs and / or PUSCHs of multiple serving cells through one DCI, thereby reducing the burden of DCI monitoring on the terminal device, and reducing power consumption and complexity.

[0011] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail to show how the principles of the present invention can be employed. However, the scope of the embodiments of the present invention is not limited to these. The embodiments of the present invention include modifications, alterations, and equivalents within the spirit and scope of the appended claims.

[0012] Features described and / or illustrated in one embodiment may be used in the same or similar manner in one or more other embodiments and may be combined with or substituted for features in the other embodiments.

[0013] It should be noted that in this text, the term "including / having" means the presence of a feature, element, step or component, and does not exclude the presence or addition of one or more other features, elements, steps or components. [Brief description of the drawings]

[0014] Elements and features depicted in one drawing and one embodiment of the present invention may be combined with elements and features shown in one or more drawings or embodiments, and in the drawings, like reference numerals may designate corresponding elements in multiple drawings and may designate corresponding elements used in more than one embodiment. [Figure 1] 1 is a schematic diagram of a communication system according to an embodiment of the present invention. [Diagram 2] 1 is a schematic diagram of an example of a data transmission and reception method according to an embodiment of the present invention. [Figure 3A] 3A and 3B are schematic diagrams of an example bundling cell according to an embodiment of the present invention. [Figure 3B] 3A and 3B are schematic diagrams of an example bundling cell according to an embodiment of the present invention. [Figure 4A] 4A to 4C are schematic diagrams of DCI information fields according to an embodiment of the present invention. [Figure 4B] 4A to 4C are schematic diagrams of DCI information fields according to an embodiment of the present invention. [Figure 4C] 4A to 4C are schematic diagrams of DCI information fields according to an embodiment of the present invention. [Diagram 5] 1 is a schematic diagram of an example of a data transmission and reception method according to an embodiment of the present invention. [Figure 6] 1 is a schematic diagram of an example of a data transmission / reception device according to an embodiment of the present invention. [Figure 7] 1 is a schematic diagram of an example of a data transmission / reception device according to an embodiment of the present invention. [Figure 8] 1 is a schematic diagram of a network device according to an embodiment of the present invention; [Figure 9] FIG. 2 is a schematic diagram of a terminal device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The above and other features of the present invention will become apparent from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some of the embodiments in which the principles of the present invention can be adopted are shown. However, the present invention is not limited to the described embodiments. The present invention includes all modifications, variations, and equivalents within the scope of the appended claims. Each embodiment of the present invention will be described below with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0016] In embodiments of the present invention, the terms "first", "second", etc. are used in the title to distinguish different elements, but do not represent the spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any and all combinations of one or more of the terms listed in the associated list. The terms "including", "comprising", "having", etc. refer to the presence of listed features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.

[0017] In the embodiments of the present invention, the singular forms "a", "the", etc., include the plural forms and should be understood broadly as "one kind" or "a class", and are not limited to "one". In addition, the term "said" should be understood to include both the singular and the plural forms, unless the context clearly indicates otherwise. In addition, the term "described in" should be understood to mean "described at least in part", and the term "based on" should be understood to mean "based at least in part on", unless the context clearly indicates otherwise.

[0018] In an embodiment of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as, for example, Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0019] Additionally, communications between devices in a communication system may occur according to any stage of communication protocols, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G, New Radio (NR), and / or other currently known or future developed communication protocols.

[0020] In the embodiment of the present invention, the term "network device" refers to a device in a communication system, for example, allowing a terminal device to access the communication system and providing a service to the terminal device. The network device may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobility management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0021] Here, the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), etc., as well as a Remote Radio Head (RRH), a Remote Radio Unit (RRU), a relay, or a low power node (e.g., femto, pico, etc.). Also, the term "base station" may include some or all of these functions, and each base station may provide communication coverage for a particular geographic area. The term "cell" may refer to a base station and / or its coverage area depending on the context in which the term is used.

[0022] In the embodiment of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to an apparatus that accesses a communication network and receives a network service via, for example, a network device. The terminal apparatus may be fixed or mobile, and may be called a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, etc.

[0023] Here, the terminal device may include, but is not limited to, a cellular phone, a personal digital assistant (PDA), a wireless modulation / demodulation device, a wireless communication device, a handheld device, a machine-type communication device, a laptop computer, a cordless phone, a smartphone, a smart watch, a digital camera, and the like.

[0024] Also, for example, in a scenario such as the Internet of Things (IoT), the user equipment may be a monitoring or measuring instrument or device, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, an industrial wireless device, a surveillance camera, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, and the like.

[0025] Furthermore, the term "network side" or "network device side" refers to the side of a network, which may be a base station or may include one or more of the network devices mentioned above. The term "user side" or "terminal side" or "terminal device side" refers to the side of a user or terminal, which may be a UE or may include one or more of the terminal devices mentioned above. In this specification, unless otherwise specified, "device" may refer to a network device or may refer to a terminal device.

[0026] In the following description, unless confusion occurs, the terms "uplink control signal" and "uplink control information (UCI)" or "physical uplink control channel (PUCCH)" may be replaced with each other, and the terms "uplink data signal" and "uplink data information" or "physical uplink shared channel (PUSCH)" may be replaced with each other. The terms "cell", "carrier", "serving cell", "carrier component", and "serving carrier" may be replaced with each other. The terms "downlink control signal" and "downlink control information (DCI)" or "physical downlink control channel (PDCCH)" may be replaced with each other, and the terms "downlink data signal" and "downlink data information" or "physical downlink shared channel (PDSCH)" may be replaced with each other. DCI and DCI format may be replaced with each other.

[0027] Also, the transmission or reception of the PUSCH may be understood as the transmission or reception of uplink data carried by the PUSCH, the transmission or reception of the PUCCH may be understood as the transmission or reception of uplink information (e.g., UCI) carried by the PUCCH, the transmission or reception of the PRACH may be understood as the transmission or reception of a preamble carried by the PRACH, the transmission or reception of the PDSCH may be understood as the transmission or reception of downlink data carried by the PDSCH, and the PDCCH may be understood as the transmission or reception of downlink information (e.g., DCI) carried by the PDCCH.

[0028] In the embodiment of the present invention, the higher layer signaling may be, for example, radio resource control (RRC) signaling. The RRC signaling may include, for example, an RRC message, and may include, for example, a master information block (MIB), system information, a dedicated RRC message, or an RRC information element (RRC IE), or an information field (or an information field) included in the RRC message or the RRC information element. The higher layer signaling may be, for example, a medium access control (MAC) signaling, or may be referred to as a MAC control element (MAC CE). Note that the present invention is not limited thereto.

[0029] In embodiments of the present invention, a plurality means at least two, or more than two.

[0030] In the embodiment of the present invention, predefined means that it is specified by a protocol or determined according to a rule specified by a protocol without the need for additional configuration. Configured means that it is directly or indirectly indicated by a network device through higher layer signaling and / or physical layer signaling. Physical layer signaling means, for example, but not limited to, control information (DCI) carried through a physical control channel or control information carried through a sequence.

[0031] The following describes an embodiment scenario of the present invention with reference to an example, but the present invention is not limited thereto.

[0032] Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention, and illustrates an example of a terminal device and a network device. As shown in Fig. 1, a communication system 100 may include a network device 101 and terminal devices 102 and 103. For convenience of explanation, Fig. 1 illustrates two terminal devices and one network device as an example, but the embodiment of the present invention is not limited thereto.

[0033] In an embodiment of the present invention, existing services or future services may be performed between the network device 101 and the terminal devices 102, 103. For example, these services may include, but are not limited to, enhanced Mobile Broadband (eMBB), massive Machine Type Communication (mMTC), and Ultra-Reliable and Low-Latency Communication (URLLC) and related communications for terminal devices with reduced capabilities.

[0034] 1 shows that both of the two terminal devices 102 and 103 are located within the coverage area of ​​the network device 101, but the present invention is not limited to this. Both of the two terminal devices 102 and 103 may not be located within the coverage area of ​​the network device 101, or one of the terminal devices 102 may be located within the coverage area of ​​the network device 101 and the other terminal device 103 may be located outside the coverage area of ​​the network device 101.

[0035] Currently, cross-carrier scheduling is configured by the RRC cross-carrier scheduling configuration (CrossCarrierSchedulingConfig) information element, which is conveyed via the serving cell configuration (ServingCellConfg) of the serving cell, and configures whether the serving cell is cross-carrier scheduled by other serving cells or can cross-carrier schedule other serving cells.

[0036] If the serving cell can cross-carrier schedule other serving cells, the serving cell is called, for example, a scheduling cell. If the serving cell is cross-carrier scheduled by other serving cells, the serving cell is called, for example, a scheduled cell. The scheduling cell can carry downlink control information (DCI) for scheduling the scheduled cell.

[0037] Currently, DCI only supports scheduling one serving cell, including the cases of self-scheduling and cross-carrier scheduling. Assume that CrossCarrierSchedulingConfig configures cell C to be cross-cell scheduled by cell A, and the Carrier Indicator Field (CIF) value corresponding to cell C is configured to be 1. If the CIF value of DCI for scheduling PDSCH / PUSCH on cell A is 1, this DCI schedules PDSCH / PUSCH in cell C.

[0038] In order to reduce the burden of DCI monitoring on the terminal device and reduce power consumption and complexity, the NR system supports scheduling of PDSCHs and / or PUSCHs of multiple serving cells via one DCI, but currently there is no specific scheme on how to support scheduling of PDSCHs and / or PUSCHs of multiple serving cells via one DCI (e.g., how to indicate / determine one or more serving cells scheduled by one DCI, etc.).

[0039] The following will be explained with reference to examples.

[0040] <Example 1> The embodiment of the present invention provides a data transmission and reception method, which is described from the terminal device side.

[0041] 2 is a schematic diagram of an example of a data transmission and reception method according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:

[0042] Step 201: A terminal device receives downlink control information (DCI) in a first cell, the DCI being used to schedule a PDSCH and / or a PUSCH in at least two cells, the first cell and / or at least one second cell.

[0043] Step 202: The terminal device receives a PDSCH scheduled by the DCI and / or transmits a PUSCH scheduled by the DCI in the at least two cells.

[0044] In some embodiments, the terminal device receives DCI in a first cell, and the first cell can schedule PDSCH and / or PUSCH in the first cell and / or the second cell. The first cell may be referred to as a scheduling cell, and the second cell may be referred to as a scheduled cell, but is not limited thereto. Alternatively, the first cell may schedule its own PDSCH and / or PUSCH (self-scheduling). The first cell may be a primary cell or a secondary cell, and the second cell may be a primary cell or a secondary cell, but the embodiments of the present invention are not limited thereto.

[0045] In some embodiments, one second cell corresponds to one or more first cells, in other words, each of the multiple first cells can schedule a PDSCH and / or a PUSCH in the one second cell, and at least one second cell corresponding to each of the multiple first cells includes the one second cell.

[0046] In some embodiments, a cell may be both a first cell and a second cell, in other words, the one cell may be used to schedule a PDSCH and / or a PUSCH in at least one other second cell, and the PDSCH and / or PUSCH in the one cell may be scheduled by at least one other first cell.

[0047] In some embodiments, the first cell scheduling the first cell or the second cell may be referred to as the first cell scheduling the PDSCH and / or PUSCH in the first cell or the second cell, or the DCI scheduling the cell may be referred to as the DCI scheduling the PDSCH and / or PUSCH in the first cell or the second cell, or the DCI received in the first cell scheduling the PDSCH and / or PUSCH in the first cell or the second cell. The DCI for scheduling the PDSCH may be referred to as a downlink assignment (DL assignment), and the DCI for scheduling the PUSCH may be referred to as an uplink grant (UL grant). In some embodiments, the DCI is used to schedule the PDSCH and / or PUSCH in at least two cells. This can reduce the burden of DCI monitoring by the terminal device and reduce power consumption and complexity. The at least two cells (hereinafter abbreviated as M cells, where M is an integer equal to or greater than 2) are M cells among a first cell and / or at least one (N, where N is an integer equal to or greater than 1) second cell. In other words, the M cells may all be M cells among N second cells, or the M cells may be one first cell and M cells among N second cells.

[0048] The following describes a range of a first cell and N second cells:

[0049] In some embodiments, the first cell and the N second cells may include all or some cells in a primary cell group, or a secondary cell group, or the same PUCCH group (set 1). Alternatively, the first cell and the at least one second cell may include a cell that can be scheduled by the first cell (set 2), or a cell that can be scheduled simultaneously by the first cell (set 3), or a cell that can be scheduled by the DCI (set 4). The first cell and the N second cells may be referred to as bundling cells, or the at least two cells scheduled by the DCI may be referred to as bundling cells, but are not limited thereto.

[0050] In some embodiments, the first cell and / or at least one second cell includes at least one (P) cell subset, and cells in different cell subsets cannot be scheduled by the same DCI (in the first cell), in other words, if the same DCI schedules M cells, the M cells belong to the same cell subset, i.e., there are not at least two cells among the M cells distributed in different cell subsets.

[0051] In some embodiments, the cell subset is a subset of set 1 or set 2 or set 3 or set 4, but the embodiments of the present invention are not limited thereto. For example, when the first cell and N second cells are set 1, the cell subset may be set 2 or set 3 or set 4, or may be a subset of set 2 or set 3 or set 4, and other examples are omitted here. Also, the division of the cell subset (cell range) in different scenarios may be the same or different, which will be described in detail later.

[0052] In some embodiments, a sub-combination of cells refers to a subset of set 1 or set 2 or set 3 or set 4. For example, cells that can be scheduled with the same DCI in set 1 or set 2 or set 3 or set 4 may be a sub-combination of cells. A cell subset or a sub-combination of cells may include one or more cells, different cell subsets may or may not have common sets, different sub-combinations of cells may or may not have common sets, and the cell subsets and sub-combinations of cells may be the same or different.

[0053] 3A and 3B are schematic diagrams of the distribution of the first cell and N second cells. As shown in FIG. 3A and 3B, different cells (carriers) may be located in the same frequency range (frequency band) or in different frequency ranges (frequency bands).

[0054] In some embodiments, the DCI is only used to schedule two or more cells simultaneously (i.e., at one time), or the DCI may be used to schedule two or more cells simultaneously (i.e., at one time) or may be used to schedule only one cell (at one time).

[0055] In some embodiments, the format of the DCI may be a first DCI format, and the first DCI format may be, for example, a DCI format for supporting multi-cell scheduling. Specifically, for example, the first DCI format may be DCI format 1_1 and / or 0_1, or DCI format 1_2 and / or 0_2, or a DCI format (for example, DCI format 1_3 or 0_3) newly introduced to support multi-cell scheduling. Note that the embodiments of the present invention are not limited thereto. For example, no distinction is made between a DCI format for supporting only multi-cell scheduling and other DCI formats, and the other DCI formats are any DCI formats for scheduling PDSCH and / or PUSCH. Here, a description of the examples is omitted.

[0056] In other words, the DCI schedules PDSCH and / or PUSCH in M ​​cells, but the DCI may support only multi-cell scheduling, or the DCI may support both single-cell and multi-cell scheduling.

[0057] In some embodiments, the M cells scheduled by the DCI may be predefined or configured, or may be dynamically (explicitly or implicitly) indicated by the DCI, for example by at least one of a first information field, a second information field, a third information field, and a fourth information field in the DCI. The method may further include the following steps (not shown):

[0058] The terminal device receives first configuration information and / or first activation / deactivation information, which includes information indicating the first cell and / or at least one second cell, and / or information of at least one cell subset, and / or information of a sub-combination of cells that can be scheduled by the same DCI among the first cell and / or the at least one second cell.

[0059] In some embodiments, the first configuration information is carried by RRC signaling and may include the cell configuration information of the first cell or cross-carrier scheduling configuration information (CrossCarrierSchedulingConfig) in the cell configuration information of the first cell, and / or the cell configuration information of the second cell or cross-carrier scheduling configuration information (CrossCarrierSchedulingConfig) in the cell configuration information of the second cell, and / or configuration information of a primary cell group or a secondary cell group. Details will be described below with reference to examples.

[0060] In some embodiments, the first activation / deactivation information may be carried by a MAC CE, the first activation / deactivation information being used to activate and / or deactivate a predefined subset of cells and / or a subset of cells configured by the first configuration information and / or a sub-combination of cells that can be scheduled by the same DCI.

[0061] In some embodiments, for the DCI, the M scheduled cells may be determined based on the first configuration information and / or the first activation / deactivation information without referring to an information field in the DCI, or the M scheduled cells may be determined based on the first configuration information and / or the first activation / deactivation information with reference to an information field in the DCI, e.g., determining a cell or a cell subset corresponding to a value of an information field or a value of a part of fields of an information field in the DCI based on the first configuration information and / or the first activation / deactivation information.

[0062] Each of these will be explained below.

[0063] In some embodiments, the M cells are a first cell and N second cells, in other words, the M cells scheduled by the DCI correspond to the first cell and N second cells scheduled by the DCI. The first cell and the N second cells are predefined or configured (e.g., RRC signaling and / or MAC signaling). If the DCI is a first DCI format, the M cells scheduled by the DCI are the first cell and N second cells that are predefined or configured (e.g., first configuration information).

[0064] For example, the first configuration information indicates information of the first cell and N second cells (second indication information). The first configuration information is for a first DCI format, and when there are multiple first DCI formats, the first configuration information configures information of the first cell and N second cells for different first DCI formats (e.g., for uplink and downlink), respectively. For example, the first configuration information may include values ​​of CIFs corresponding to the first cell and N second cells, and may preferably further include first DCI format indication information corresponding to the information configuring the first cell and N second cells.

[0065] In some embodiments, the M cells are dynamically (explicitly or implicitly) indicated by the DCI. In the following, various information fields in the DCI are described with reference to Figures 4A-4C.

[0066] FIG. 4A is a schematic diagram of an example of a DCI format. As shown in FIG. 4A, one information field in the DCI (for example, a first information field or a second information field described later) is used to explicitly indicate a cell scheduled by the DCI. The DCI further includes a third information field and / or a fourth information field, and the third information field and / or the fourth information field may be a common, cell-specific, or cell group-specific information field. The third information field and / or the fourth information field may be a frequency resource allocation field or a time domain resource allocation field, etc., but the description thereof is omitted here. The third information field and / or the fourth information field may implicitly indicate a cell scheduled by the DCI, or may not indicate a cell scheduled by the DCI.

[0067] FIG. 4B is a schematic diagram of an example of a DCI format. As shown in FIG. 4B, two or more information fields in the DCI (for example, a first information field and a second information field described later) are used to explicitly indicate a cell scheduled by the DCI. The DCI further includes a third information field and / or a fourth information field, and the third information field and / or the fourth information field may be a common, cell-specific, or cell group-specific information field. The third information field and / or the fourth information field may be a frequency resource allocation field or a time domain resource allocation field, etc., but the description thereof is omitted here. The third information field and / or the fourth information field may implicitly indicate a cell scheduled by the DCI, or may not indicate a cell scheduled by the DCI.

[0068] FIG. 4C is a schematic diagram of an example of a DCI format. As shown in FIG. 4C, the DCI does not include an information field for explicitly indicating a cell scheduled by the DCI. The DCI further includes a third information field and / or a fourth information field, and the third information field and / or the fourth information field may be a common, cell-specific, or cell group-specific information field. The third information field and / or the fourth information field may be a frequency resource allocation field or a time domain resource allocation field, etc., but the description thereof is omitted here. The third information field and / or the fourth information field may implicitly indicate a cell scheduled by the DCI.

[0069] In some embodiments, the first information field may utilize an existing carrier indication field (CIF) of DCI (the indication method may be changed), and the second information field may be a newly added information field, but this is merely an example and embodiments of the present invention are not limited thereto.

[0070] Below, the methods of indicating / determining cells to be scheduled by DCI will be described with reference to FIGS. 4A to 4C.

[0071] In some embodiments, as shown in FIG. 4C, the DCI does not include an information field that explicitly indicates scheduled cells. The DCI includes or does not include a third information field, and if one or more cells corresponding to the third information field are not scheduled, the value of the third information field is a first value, or the DCI does not include the third information field, or the terminal device ignores the third information field. The number of the third information fields is at least two, and the bit positions in the DCI of each of the at least two information fields are consecutive or discrete, and each third information field includes one or multiple consecutive bits, and the terminal device may determine the M cells scheduled by the DCI based on the value of the third information field.

[0072] For example, the third information field is a cell-specific or cell group-specific information field, i.e., different third information fields correspond to different cell subsets or cells, and the third information field indicates that the corresponding cell subset or cell is not scheduled by a first value. In other words, if a cell subset or cell is not scheduled, the corresponding third information field is set to the first value or is not included. If the value of the third information field is not the first value, it implicitly indicates that the corresponding cell subset or cell is scheduled. For example, the third information field is a frequency resource allocation field, which explicitly indicates the PDSCH and / or PUSCH frequency resources scheduled in the corresponding cell or the corresponding cell subset. There are three third information fields corresponding to cell subset 1, cell subset 2, and cell subset 3, respectively. If the value of the first third information field is the first value or does not include the first third information field, cell subset 1 is not scheduled. If the value of the second third information field is not the first value (is the fourth value), cell subset 2 is scheduled, and the fourth value is used to indicate the PDSCH and / PUSCH frequency resources scheduled in cell subset 2. If the value of the third information field is not the first value (is the fifth value), cell subset 3 is scheduled, and the fifth value is used to indicate the PDSCH and / PUSCH frequency resources scheduled in cell subset 3.

[0073] In some embodiments, the DCI includes a fourth information field, the fourth information field includes a first field and / or a second field, and if one or more cells corresponding to the first field or the second field are not scheduled, the value of the first field or the second field is a second value, or the fourth information field does not include the first field or the second field, or the terminal device ignores the first field or the second field. The terminal device can determine the M cells scheduled by the DCI based on the value of the fourth information field.

[0074] For example, the fourth information field includes a first field and / or a second field, and the bits included in the second field and the bits included in the first field have or do not have a common set. Different fields correspond to different cell subsets or cells, and the first field and / or the second field indicate that the corresponding cell subset or cell is not scheduled by having a second value or not including the first field and / or the second field. In other words, if a cell subset or cell is not scheduled, the corresponding first field and / or the second field is set to a second value or does not include the first field and / or the second field. For example, the fourth information field includes a first field and a second field corresponding to cell subset 1 and cell subset 2, respectively. If the value of the first field is the second value or does not include the first field, cell subset 1 is not scheduled, and if the value of the second field is not the second value or includes the second field, cell subset 2 is scheduled. Here, the description of other examples is omitted.

[0075] As mentioned above, the cell or cell subset corresponding to the value of the third information field or the fourth information field, or the value of some fields of the fourth information field, can be determined based on the first configuration information. The specific embodiment has been described above, and the description thereof is omitted here.

[0076] In some embodiments, the DCI includes a first information field, which is used to explicitly indicate the cells scheduled by the DCI. For example, one CIF value may correspond to multiple cells, and when the first information field of the DCI is the CIF value, it indicates that the multiple cells corresponding to the CIF value are scheduled. The downlink assignment or uplink grant of the DCI is for the multiple cells, for example, the first information field may be an existing CIF.

[0077] For example, for each cell, one or more corresponding CIF values ​​may be predefined and / or configured, and for each CIF, one or more cells may be predefined or configured. The following describes the configuration of one or more corresponding CIF values ​​for each cell (configuration by the first configuration information) as an example. The method of predefining one or more corresponding CIF values ​​is similar, and the description thereof is omitted here.

[0078] For example, the first configuration information includes (cross-carrier scheduling configuration information in) cell configuration information of the first cell and / or the second cell, and the cell configuration information of the first cell and / or the second cell includes first indication information, which is used to indicate one or more first information field values ​​corresponding to the first cell or the second cell. The first configuration information is carried by RRC signaling. Based on the first configuration information, the terminal device can determine a correspondence relationship between the first cell and / or the second cell and the first information field value (a cell or cell subset corresponding to the value of the first information field), in other words, can know which cell of the first cell and / or the second cell each first information field value corresponds to. Furthermore, when the DCI indicates a first information field value, the scheduled M cells can be determined by referring to the correspondence relationship.

[0079] The first indication information may indicate one or more first information field values ​​in the manner of a sequence or a bitmap. The cross-carrier scheduling configuration information of the first cell can be expressed as follows using Abstract Syntax Notation (ASN.1) data format (sequence value):

[0080] [Table 1] Thus, the first indication information cif-InSchedulingCellList-r18 is used to indicate one or more first information field values ​​corresponding to the first cell or the second cell. Similarly, the cross-carrier scheduling configuration information of each second cell also includes the first indication information cif-InSchedulingCellList-r18, which is used to indicate one or more first information field values ​​corresponding to the first cell or the second cell. For example, the first cell is cell 1, and the second cells include cell 2, cell 3, and cell 4. The CIF values ​​indicated by the first indication information of the cross-carrier scheduling configuration information of cell 1 are 0, 4, 5, 6, 10, 11, 12, and 14, the CIF values ​​indicated by the first indication information of the cross-carrier scheduling configuration information of cell 2 are 1, 4, 7, 8, 10, 12, 13, and 14, the CIF values ​​indicated by the first indication information of the cross-carrier scheduling configuration information of cell 3 are 2, 5, 7, 9, 10, 11, 13, and 14, and the CIF values ​​indicated by the first indication information of the cross-carrier scheduling configuration information of cell 4 are 3, 6, 8, 9, 11, 12, 13, and 14. The mapping relationship between each CIF value and a cell is as follows, as shown in Table 1 in particular.

[0081] [Table 2] Thus, a first information field value of the DCI of 9 (e.g., 1001) indicates that cells 3 and 4 are scheduled, and a first information field value of 14 indicates that cells 1, 2, 3, and 4 are scheduled.

[0082] Table 1 is merely an exemplary explanation, and the present invention is not limited thereto. For example, the present invention may be as shown in Table 2 or Table 3 below.

[0083] [Table 3]

[0084] [Table 4] The cross-carrier scheduling configuration information of the first cell can be expressed using Abstract Syntax Notation (ASN.1) data format (bitmap) as follows:

[0085] [Table 5] The first indication information cif-InSchedulingCellList-r18 is used to indicate one or more first information field values ​​corresponding to the first cell or the second cell. Similarly, the cross-carrier scheduling configuration information of each second cell also includes the first indication information cif-InSchedulingCellList-r18, and the first indication information is used to indicate one or more first information field values ​​corresponding to the first cell or the second cell. For example, the first indication information is a bitmap, and each bit corresponds to one CIF value. For example, if the first indication information of the cross-carrier scheduling configuration information of cell 1 is 10001110, it indicates that the CIF value is 0, 4, 5, 6; if the first indication information of the cross-carrier scheduling configuration information of cell 2 is 01001001, it indicates that the CIF value is 1, 4, 7; if the first indication information of the cross-carrier scheduling configuration information of cell 3 is 00100101, it indicates that the CIF value is 2, 5, 7; if the first indication information of the cross-carrier scheduling configuration information of cell 4 is 00010010, it indicates that the CIF value is 3, 6. Thus, if the first information field value of DCI is 0110 (CIF value is 6), it indicates that cell 1 and cell 4 are scheduled, and if the first information field value is 111, it indicates that cell 2 and cell 3 are scheduled.

[0086] In some embodiments, the value of the first information field is equal to 0 and corresponds only to the first cell, and the range of values ​​of the first information field corresponding to the first cell includes 0. In other words, the range of values ​​of the first information field corresponding to the second cell does not include 0, and the value of the first information field being 0 is only used to schedule the first cell individually, and if the first cell and the second cell need to be scheduled simultaneously, the value of the first information field is not 0. This is just an example, and for example the range of values ​​of the first information field corresponding to the second cell may include 0.

[0087] In the conventional method, the first information field being 0 cannot be configured in the cross-carrier scheduling configuration information and is predefined to correspond to the first cell. In order to support multi-cell scheduling, the range of the first information field value that can be indicated by the first indication information includes 0 or does not include 0.

[0088] In some embodiments, the range of values ​​of the first information field that can be indicated by the first indication information for the first cell and the second cell are the same or different, and / or the number of configurable values ​​of the first information field are the same or different. If they are different, for example, the range of values ​​of the first information field that can be indicated by the first indication information for the first cell does not include 0 (or by default, the value of the corresponding first information field includes 0), and the range of values ​​of the first information field that can be indicated by the first indication information for the second cell includes 0. If they are the same, for example, the range of values ​​of the first information field that can be indicated by the first indication information for the first cell and the second cell both include 0, or neither include 0.

[0089] For example, for Table 1, the range of values ​​of the first information field that can be indicated by the first instruction information for the second cell does not include 0, and for Table 3, the range of values ​​of the first information field that can be indicated by the first instruction information for the second cell includes 0.

[0090] In some embodiments, if the range of values ​​of the first information field that can be indicated by the first indication information for the first cell all includes 0, when the first indication information is not included, the value of the configured first information field is 0 by default.

[0091] In the above example, the first information field indicates the M cells scheduled by the DCI as a whole. In some embodiments, the first information field includes a third field and / or a fourth field. If one or more cells corresponding to the third field or the fourth field are not scheduled, the value of the third field or the fourth field is a third value, and the terminal device can determine the M cells scheduled by the DCI based on the values ​​of each field in the first information field.

[0092] For example, the first information field includes a third field and / or a fourth field, and the bits included in the fourth field and the bits included in the third field have a common set or do not have a common set. Different fields correspond to different cell subsets or cells, and the third field and / or the fourth field indicate that the corresponding cell subset or cell is not scheduled by a third value. In other words, when a sub-cell or cell is not scheduled, the corresponding third field and / or the fourth field is set to the third value. For example, the first information field includes a third field and a fourth field corresponding to cell subset 1 and cell subset 2, respectively. The value of the third field is the third value, and cell subset 1 is not scheduled, and the value of the fourth field is not the third value, and cell subset 2 is scheduled. No concrete examples are given here.

[0093] In the above example, the DCI includes a first information field indicating the M scheduled cells. In some embodiments, the DCI may include at least two first information fields, with different first information fields corresponding to different cell subsets or cells. For example, if a cell or cell subset corresponding to a first information field is not scheduled, the value of the first information field is a third value.

[0094] For example, the first information field indicates that the corresponding cell subset or cell is not scheduled with the third value. In other words, if the cell subset or cell is not scheduled, the corresponding first information field is set to the third value. If the value of the first information field is not the third value, it indicates that the corresponding cell subset or cell is scheduled.

[0095] As mentioned above, the cells or cell subsets corresponding to different first information fields or different fields have a common set or do not have a common set. The configuration manner of the correspondence relationship between the first information field or fields and the cells or cell subsets is the same as the above-mentioned first configuration information, and the description thereof is omitted here. The terminal device can determine the cells or cell subsets corresponding to the value of the first information field or the value of some fields of the first information field based on the first configuration information.

[0096] In some embodiments, the first information field indicates a scheduled cell by indicating a value of the CIF, but the embodiment of the present invention is not limited thereto. For example, as will be described below by way of example, the first information field may not indicate a scheduled cell by indicating a value of the CIF.

[0097] In some embodiments, the DCI includes a first information field or a second information field, which indicates a scheduled cell in the form of a bitmap or an RIV, or which is used to indicate a cell subset index. The terminal device determines a cell scheduled by the DCI based on the value of the first information field or the second information field. The following describes a bitmap as an example, where different bits correspond to different cells or cell subsets.

[0098] For example, the range of cells that can be indicated by the bitmap is a first cell and / or N second cells, i.e., the cells that can be indicated by the bitmap are cells that can be scheduled by the first cell or cells that can be scheduled by the DCI.

[0099] For example, the range of cells that can be indicated by the bitmap is the cells in the cell subset, preferably the cells other than the first cell or the second cell for which the CIF value is configured, in other words, the bitmap indicates the cells related to the cell corresponding to the CIF value in the DCI. However, the embodiment of the present invention is not limited thereto.

[0100] For example, the range of cells that can be indicated by the bitmap is cells related to a cell for which a CIF value is configured or predefined, preferably cells other than the first cell or the second cell for which a CIF value is configured, in other words, the bitmap indicates cells related to a cell corresponding to a CIF value in a DCI. Unlike the above, the related cells are not limited to within the same cell, and the related cells may be cells across cell subsets.

[0101] For example, the range of cells that can be indicated by the bitmap is cells in a cell subset, which also includes the first cell, or the range of cells that can be indicated by the bitmap is cells that can be scheduled by the first DCI format. Differently from the above, the scheduled cells are not limited to within the same cell, and the associated cells may be cells across cell subsets.

[0102] As described above, the correspondence between the first information field or the second information field and the cell or cell subset is the same as the above-mentioned first configuration information, and the terminal device can determine the cell or cell subset corresponding to the value of the first information field or the second information field based on the first configuration information. Here, the description is omitted.

[0103] In some embodiments, the DCI includes a first information field, which is used to indicate one of the cells scheduled by the DCI. That is, similar to the prior art, when the value of the first information field is configured or predefined, the value of the first information field corresponds to a cell one-to-one, and the above-mentioned first configuration information indicates information of at least one cell subset. For example, the cell configuration information of a cell indicates that the at least one cell subset is at least one cell subset related to the one cell. Thus, when the DCI indicates a value of one first information field, at least one cell subset related to the cell corresponding to the value of the first information field can be determined based on the first configuration information. The cell corresponding to the value of the one first information field and the cells in the at least one cell subset related to the cell are M cells scheduled by the DCI.

[0104] Preferably, when the associated cell subset is configured to be a plurality of sets, the activation / deactivation information or the second information field indicates a sub-combination of scheduled cells from a sub-combination of one or more cells in which the one cell is located, or indicates a sub-combination of scheduled cells from a sub-combination of one or more cells associated with the one cell, or indicates one or more cells other than the one cell among the cells scheduled by the DCI (in other words, indicates / activates a cell subset from a plurality of sets). For example, the activation / deactivation information is a set index of an activated cell subset, and the value of the second information field is a set index of a cell subset. In this case, the first cell and N second cells are equal to cells in the activated cell subset. Specifically, as shown in Table 4 (gray grid is the cell corresponding to the CIF value, and striped grid is the associated cell).

[0105] [Table 6] In some embodiments, the DCI includes a first information field and a second information field, the first information field and the second information field jointly indicating cells scheduled by the DCI, and the terminal device determines the M cells scheduled by the DCI based on values ​​of the first information field and the second information field.

[0106] For example, the second information field is used to indicate an index of a cell subset, and the first information field is used to indicate a cell scheduled by the DCI in the cell subset indicated by the second information field. The range of scheduled cells indicated by the first information field is a cell in the cell subset of the first cell and the second cell, which is different from the above method. However, the specific indication method may refer to the above embodiment, and the description thereof will be omitted here.

[0107] In some embodiments, the DCI includes a second information field, which indicates the number M of scheduled cells. The terminal device determines the M cells scheduled by the DCI based on the value of the second information field. For example, the first configuration information may configure a number of scheduling cell patterns. The number of scheduling cells corresponding to each pattern is different, and each pattern indicates which cells are to be scheduled. In this way, the terminal device can determine a pattern corresponding to the number of scheduling cells indicated by the second information field based on the number of the scheduling cells, and can determine the M scheduled cells based on the pattern. As described above, when determining a cell scheduled by DCI based on the value of the first information field and / or the second information field, if it is determined that a cell or cell subset is not scheduled, the third information field corresponding to the cell or cell subset is the second value, or does not include the corresponding third information field, or the terminal device ignores the corresponding third information field, or the first field or the second field of the fourth information field corresponding to the cell or cell subset is the second value, or does not include the corresponding third information field, or the terminal device ignores the corresponding third information field. Specific embodiments may refer to the above examples, and the description thereof will be omitted here.

[0108] According to this embodiment, it is possible to support scheduling of PDSCHs and / or PUSCHs of multiple serving cells via one DCI, thereby reducing the burden of DCI monitoring on the terminal device and reducing power consumption and complexity.

[0109] <Example 2> The embodiment of the present invention provides a data transmission and reception method, and will be described from the perspective of a network device. Here, the description of the parts that overlap with the first embodiment will be omitted.

[0110] 5 is a schematic diagram of an example of a data transmission and reception method according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:

[0111] Step 501: A network device transmits downlink control information (DCI) in a first cell, the DCI being used to schedule a PDSCH and / or a PUSCH in at least two cells, the first cell and / or at least one second cell.

[0112] Step 502: The network device transmits the PDSCH and / or receives the PUSCH in the at least two cells.

[0113] In some aspects, steps 501 and 502 refer to the first embodiment, and a description of the overlapping contents will be omitted.

[0114] In some embodiments, the method may further include the following steps (not shown): A network device transmits first configuration information and / or first activation / deactivation information to a terminal device. The first configuration information and / or the first activation / deactivation information includes information indicating the first cell and / or at least one second cell, and / or information of at least one cell subset, and / or information of a sub-combination of cells that can be scheduled by the same DCI among the first cell and / or at least one second cell. Specifically, reference may be made to embodiment 1.

[0115] For the method of indicating / determining the cell scheduled by DCI, reference may be made to Example 1, and the description thereof will be omitted here.

[0116] According to this embodiment, it is possible to support scheduling of PDSCHs and / or PUSCHs of multiple serving cells via one DCI, thereby reducing the burden of DCI monitoring on the terminal device and reducing power consumption and complexity.

[0117] <Example 3> An embodiment of the present invention provides a data transmission / reception device. The device may be, for example, a terminal device, or one or more elements or components configured in the terminal device. Descriptions of the same contents as those in the first embodiment will be omitted.

[0118] 6 is a schematic diagram of an example of a data transmission / reception device according to an embodiment of the present invention. As shown in FIG. 6, the device includes the following units:

[0119] The first receiving unit 601 receives downlink control information (DCI) in a first cell, which is used to schedule PDSCH and / or PUSCH in at least two cells of the first cell and / or at least one second cell.

[0120] The first transceiver unit 602 receives the PDSCH and / or transmits the PUSCH in the at least two cells.

[0121] In some embodiments, the first cell and the at least one second cell include all or some cells in a primary cell group or a secondary cell group or the same PUCCH group.

[0122] In some embodiments, the first cell and the at least one second cell include a cell schedulable by the first cell or a cell schedulable by the DCI.

[0123] In some embodiments, the first cell and / or the at least one second cell include at least one cell subset, and cells in different cell subsets cannot be scheduled with the same DCI.

[0124] In some embodiments, the DCI is of a first DCI format, for example, the first DCI format supports only multi-cell scheduling.

[0125] In some embodiments, the DCI includes a first information field and / or a second information field, the first information field and / or the second information field being used to indicate a cell to be scheduled by the DCI.

[0126] In some embodiments, the DCI is used to simultaneously schedule the first cell and / or at least one second cell.

[0127] In some embodiments, the first cell and / or the at least one second cell are predefined or configured.

[0128] In some embodiments, the DCI includes or does not include a third information field, and if one or more cells corresponding to the third information field are not scheduled, the value of the third information field is a first value, or the DCI does not include the third information field, or the terminal device ignores the third information field. For example, the DCI includes at least two third information fields.

[0129] In some embodiments, the DCI includes a fourth information field, the fourth information field including a first field and / or a second field, and if one or more cells corresponding to the first field or the second field are not scheduled, the value of the first field or the second field is a second value, or the fourth information field does not include the first field or the second field, or the terminal device ignores the first field or the second field.

[0130] In some embodiments, the bits included in the second field and the bits included in the first field may or may not have an intersection.

[0131] In some embodiments, the apparatus further comprises the following units:

[0132] A second receiving unit (not shown) receives first configuration information and / or first activation / deactivation information, which includes information indicating the first cell and / or at least one second cell, and / or information of at least one cell subset, and / or information of a sub-combination of cells that can be scheduled by the same DCI among the first cell and / or at least one second cell.

[0133] In some embodiments, the first configuration information includes cell configuration information of the first cell, and / or cell configuration information of the second cell, and / or configuration information of a primary cell group or a secondary cell group.

[0134] In some embodiments, the apparatus further comprises the following units:

[0135] A first determination unit (not shown) determines a cell or a cell subset corresponding to a value of an information field or a value of a part of an information field in the DCI based on the first configuration information and / or the first activation / deactivation information.

[0136] In some embodiments, the first configuration information includes cell configuration information of the first cell and / or the second cell, and the cell configuration information of the first cell and / or the second cell includes first indication information, which is used to indicate one or more values ​​of a first information field and / or one or more values ​​of a second information field corresponding to the first cell or the second cell.

[0137] In some embodiments, the first configuration information includes cell configuration information of the first cell and / or configuration information of a primary cell group or a secondary cell group, and the cell configuration information of the first cell and / or the configuration information of the primary cell group or the secondary cell group includes second indication information, which is used to indicate a value of a first information field and / or one or more values ​​of a second information field corresponding to the first cell and / or at least one cell.

[0138] In some embodiments, the DCI includes a first information field, the first information field being used to indicate the at least two cells.

[0139] In some embodiments, the DCI includes a first information field, the first information field being used to indicate one cell of the at least two cells.

[0140] In some embodiments, the DCI further includes a second information field used to indicate a scheduled cell subset from one or more cell subsets in which the cell is located, or used to indicate a scheduled cell subset from one or more cell subsets associated with the cell, or used to indicate one or more cells other than the cell scheduled by the DCI.

[0141] In some embodiments, the first information field includes a third field and / or a fourth field, and if one or more cells corresponding to the third field or the fourth field are not scheduled, the value of the third field or the fourth field is a third value, or the fourth information field does not include the third field or the fourth field, or the terminal device ignores the third field or the fourth field.

[0142] In some embodiments, the DCI includes a plurality of first information fields, and if one or more cells corresponding to the first information fields are not scheduled, the value of the first information field is a third value, or the DCI does not include the first information field, or the terminal device ignores the first information field.

[0143] In some embodiments, the DCI includes a first information field or a second information field, the first information field or the second information field being a bitmap, and a first bit and a second bit in the bitmap correspond to different cells or cell subsets.

[0144] In some embodiments, the DCI includes a first information field or a second information field, the first information field or the second information field being a resource indicator value (RIV).

[0145] In some embodiments, the DCI includes a first information field or a second information field, the first information field or the second information field being used to indicate a cell subset index.

[0146] In some embodiments, the DCI includes a first information field and a second information field, the second information field being used to indicate a cell subset index and the first information field being used to indicate a cell scheduled by the DCI in the cell subset indicated by the second information field.

[0147] In some embodiments, the apparatus further comprises the following units:

[0148] A second determination unit (not shown) determines one or more cells scheduled by the DCI based on the values ​​of the second information field and / or the first information field.

[0149] In some embodiments, the apparatus further comprises the following units:

[0150] A third determination unit (not shown) determines, based on a format of the DCI, one or more cells scheduled by the DCI.

[0151] In some embodiments, the apparatus further comprises the following units:

[0152] A fourth determination unit (not shown) determines one or more cells scheduled by the DCI based on values ​​of some fields of the third information field and / or the fourth information field.

[0153] The above-mentioned embodiments are merely illustrative of the embodiments of the present invention, and the present invention is not limited thereto, and appropriate modifications may be made based on the above-mentioned embodiments. For example, each of the above-mentioned embodiments may be used alone, or one or more of the above-mentioned embodiments may be used in combination.

[0154] Although only the components or modules related to the present invention have been described above, the present invention is not limited thereto. The data transmitting / receiving device 600 may further include other components or modules. For specific contents of these components or modules, reference may be made to the related art.

[0155] Further, for convenience of explanation, Fig. 6 only exemplarily illustrates the connection relationships or signal directions between various components or modules, but it is clear to those skilled in the art that various related technologies such as bus connections can be used. The above-mentioned various components or modules may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0156] According to this embodiment, it is possible to support scheduling of PDSCHs and / or PUSCHs of multiple serving cells via one DCI, thereby reducing the burden of DCI monitoring on the terminal device and reducing power consumption and complexity.

[0157] <Example 4> An embodiment of the present invention provides a data transmission and reception device. The device may be, for example, a network device, or one or more elements or components configured in the network device. Descriptions of the same contents as those in the second embodiment will be omitted.

[0158] 7 is a schematic diagram of an example of a data transmission / reception device according to an embodiment of the present invention. As shown in FIG. 7, the device includes the following units:

[0159] The first transmitting unit 701 transmits downlink control information (DCI) in a first cell, which is used to schedule PDSCH and / or PUSCH in at least two cells of the first cell and / or at least one second cell.

[0160] The second transceiver unit 702 transmits the PDSCH and / or receives the PUSCH in the at least two cells.

[0161] In some embodiments, the apparatus may further include the following units (not shown):

[0162] The second receiving unit receives first configuration information and / or first activation / deactivation information, where the first configuration information and / or the first activation / deactivation information includes information indicating the first cell and / or at least one second cell, and / or information of at least one cell subset, and / or information of a sub-combination of cells that can be scheduled by the same DCI among the first cell and / or the at least one second cell.

[0163] The above-mentioned embodiments are merely illustrative of the embodiments of the present invention, and the present invention is not limited thereto, and appropriate modifications may be made based on the above-mentioned embodiments. For example, each of the above-mentioned embodiments may be used alone, or one or more of the above-mentioned embodiments may be used in combination.

[0164] Although only the components or modules related to the present invention have been described above, the present invention is not limited thereto. The data transmitting / receiving device 700 may further include other components or modules. For specific contents of these components or modules, reference may be made to the related art.

[0165] Furthermore, for convenience of explanation, Fig. 7 only exemplarily illustrates the connection relationships or signal directions between various components or modules, but it is clear to those skilled in the art that various related technologies such as bus connections can be used. The above-mentioned various components or modules may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0166] According to this embodiment, it is possible to support scheduling of PDSCHs and / or PUSCHs of multiple serving cells via one DCI, thereby reducing the burden of DCI monitoring on the terminal device and reducing power consumption and complexity.

[0167] <Example 5> An embodiment of the present invention further provides a communication system, and may refer to FIG. 1. Description of the same contents as those in the first to fourth embodiments will be omitted.

[0168] In some embodiments, the communication system 100 may include at least a terminal device 102 and a network device 101 .

[0169] In some embodiments, the aspects of the terminal device 102 may refer to the terminal device 900, and the aspects of the network device may refer to the network device 800, and the description thereof will be omitted here.

[0170] An embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto and may be other network devices.

[0171] Fig. 8 is a schematic diagram of a network device according to an embodiment of the present invention. As shown in Fig. 8, the network device 800 may include a processor 810 (e.g., a central processing unit (CPU)) and a memory 820, and the memory 820 is connected to the processor 810. The memory 820 may store various data, and further stores an information processing program 830 and executes the program 830 under the control of the processor 810.

[0172] For example, the processor 810 may execute a program to realize the data transmission and reception method described in the second embodiment.

[0173] Also, as shown in Fig. 8, the network device 800 may further include a transceiver 840 and an antenna 850. The functions of the above members are similar to those of the prior art, and the description thereof will be omitted here. It is not necessary for the network device 800 to include all the units shown in Fig. 8. Also, the network device 800 may further include units not shown in Fig. 8, and may refer to the prior art.

[0174] The embodiment of the present invention further provides a terminal device, but the present invention is not limited thereto and may be other devices.

[0175] Fig. 9 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in Fig. 9, the terminal device 900 may include a processor 910 and a memory 920, where the memory 920 stores data and programs and is connected to the processor 910. It should be noted that this diagram is exemplary, and other types of structures may be used to supplement or replace this structure to realize communication functions or other functions.

[0176] For example, the processor 910 may execute a program to realize the data transmission and reception method described in the first embodiment.

[0177] Also, as shown in Fig. 9, the terminal device 900 may further include a communication module 930, an input unit 940, a display 950, a power supply 960, and the like. Here, the functions of the above units are similar to those of the prior art, and the description thereof will be omitted here. Note that the terminal device 900 does not need to include all the units shown in Fig. 9. Also, the terminal device 900 may further include units not shown in Fig. 9, and may refer to the prior art.

[0178] In an embodiment of the present invention, there is further provided a computer-readable program, which, when executed in a terminal device, causes the terminal device to execute the data transmission and reception method according to the first embodiment.

[0179] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the storage medium causing a terminal device to execute the data transmission and reception method described in embodiment 1 when the program is executed.

[0180] In an embodiment of the present invention, there is further provided a computer-readable program, which, when executed in a network device, causes the network device to execute the data transmission and reception method according to the second embodiment.

[0181] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the storage medium causing a network device to execute the data transmission and reception method described in embodiment 2 when the program is executed.

[0182] The above-mentioned apparatus and method of the present invention may be realized by hardware or by a combination of hardware and software.The present invention relates to a computer readable program which, when executed by a logic unit, causes the logic unit to realize the above-mentioned apparatus or components, or to realize the above-mentioned various methods or steps.The present invention relates to a storage medium for storing the above-mentioned program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0183] Each processing method in each device described with reference to the embodiments of the present invention may be implemented by hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the drawings, or one or more combinations of the functional block diagrams, may correspond to each software module in the flow of a computer program, or each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be realized by implementing these software modules in hardware, for example, using a field programmable gate array (FPGA).

[0184] The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor reads information from the storage medium or writes information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal, or in a memory card inserted in the mobile terminal. For example, if the device (e.g., a mobile terminal) uses a MEGA-SIM card or a large capacity flash memory device with a relatively large capacity, the software module may be stored in the MEGA-SIM card or the large capacity flash memory device.

[0185] One or more of the functional blocks and / or one or more combinations of functional blocks in the functional block diagrams illustrated in the drawings may be implemented with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof to perform the functions described herein. One or more of the functional blocks and / or one or more combinations of functional blocks in the functional block diagrams illustrated in the drawings may be implemented with, for example, a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors in combination with a DSP communication, or any other configuration.

[0186] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes may be made to the present invention without departing from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0187] Furthermore, the following supplementary notes are disclosed regarding the embodiments including the above examples. [Terminal side] (Appendix 1) A data transmission / reception method applied to a terminal device, comprising: A step of receiving downlink control information (DCI) in a first cell by a terminal device, the DCI being used for scheduling a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell; The method includes a step of the terminal device receiving the PDSCH and / or transmitting the PUSCH in the at least two cells. (Appendix 2) 2. The method of claim 1, wherein the first cell and the at least one second cell include all or some cells in a primary cell group or a secondary cell group or a same PUCCH group. (Appendix 3) The method of claim 1 or 2, wherein the first cell and the at least one second cell include a cell that can be scheduled by the first cell or a cell that can be scheduled by the DCI. (Appendix 4) 4. The method of claim 1, wherein the first cell and / or the at least one second cell includes at least one cell subset, and cells in different cell subsets cannot be scheduled with the same DCI. (Appendix 5) 2. The method of claim 1, wherein the DCI is a first DCI format. (Appendix 6) 6. The method of claim 5, wherein the first DCI format supports only multi-cell scheduling. (Appendix 7) 7. A method according to any one of Supplementary Notes 1 to 6, wherein the DCI includes a first information field and / or a second information field, the first information field and / or the second information field being used to indicate a cell scheduled by the DCI. (Appendix 8) 8. The method of claim 1, wherein the DCI is used to simultaneously schedule the first cell and / or the at least one second cell. (Appendix 9) 9. The method of claim 8, wherein the first cell and / or the at least one second cell are predefined or configured. (Appendix 10) A method according to any one of Supplementary Notes 1 to 7, wherein the DCI includes or does not include a third information field, and if one or more cells corresponding to the third information field are not scheduled, the value of the third information field is a first value, or the DCI does not include the third information field, or the terminal device ignores the third information field. (Appendix 11) 11. The method of claim 10, wherein the DCI includes at least two third information fields. (Appendix 12) A method according to any one of Supplementary Notes 1 to 7, wherein the DCI includes a fourth information field, the fourth information field includes a first field and / or a second field, and if one or more cells corresponding to the first field or the second field are not scheduled, the value of the first field or the second field is a second value, or the fourth information field does not include the first field or the second field, or the terminal device ignores the first field or the second field. (Appendix 13) 13. The method of claim 12, wherein the bits included in the second field and the bits included in the first field may or may not have a common set. (Appendix 14) The method according to any one of Supplementary Notes 1 to 13, further comprising a step of the terminal device receiving first configuration information and / or first activation / deactivation information, the first configuration information and / or the first activation / deactivation information including information indicating the first cell and / or the at least one second cell, and / or information of at least one cell subset, and / or information of a sub-combination of cells that can be scheduled by the same DCI among the first cell and / or the at least one second cell. (Appendix 15) The method of claim 14, wherein the first configuration information includes cell configuration information of the first cell, and / or cell configuration information of the second cell, and / or configuration information of a primary cell group or a secondary cell group. (Appendix 16) The method of claim 14, further comprising a step of the terminal device determining a cell or a cell subset corresponding to a value of an information field or a value of a part of a field of an information field in the DCI based on the first configuration information and / or the first activation / deactivation information. (Appendix 17) 15. The method of claim 14, wherein the first configuration information includes cell configuration information of the first cell and / or the second cell, and the cell configuration information of the first cell and / or the second cell includes first indication information, and the first indication information is used to indicate one or more values ​​of a first information field and / or one or more values ​​of a second information field corresponding to the first cell or the second cell. (Appendix 18) 15. The method of claim 14, wherein the first configuration information includes cell configuration information of the first cell and / or configuration information of a primary cell group or a secondary cell group, and the cell configuration information of the first cell and / or the configuration information of the primary cell group or the secondary cell group includes second indication information, and the second indication information is used to indicate a value of a first information field and / or one or more values ​​of a second information field corresponding to the first cell and / or at least one cell. (Appendix 19) 8. The method of claim 7, wherein the DCI includes a first information field, the first information field being used to indicate the at least two cells. (Appendix 20) 8. The method of claim 7, wherein the DCI includes a first information field, the first information field being used to indicate one cell of the at least two cells. (Appendix 21) The method of claim 20, wherein the DCI further includes a second information field, the second information field being used to indicate a scheduled cell subset from one or more cell subsets in which the cell is located, or used to indicate a scheduled cell subset from one or more cell subsets associated with the cell, or used to indicate one or more cells other than the cell among the cells scheduled by the DCI. (Appendix 22) The method of claim 7, wherein the first information field includes a third field and / or a fourth field, and if one or more cells corresponding to the third field or the fourth field are not scheduled, the value of the third field or the fourth field is a third value, or the fourth information field does not include the third field or the fourth field, or the terminal device ignores the third field or the fourth field. (Appendix 23) The method of claim 7, wherein the DCI includes a plurality of first information fields, and when one or more cells corresponding to the first information fields are not scheduled, the value of the first information field is a third value, or the DCI does not include the first information field, or the terminal device ignores the first information field. (Appendix 24) 8. The method of claim 7, wherein the DCI includes a first information field or a second information field, the first information field or the second information field being a bitmap, and a first bit and a second bit in the bitmap correspond to different cells or cell subsets. (Appendix 25) 8. The method of claim 7, wherein the DCI includes a first information field or a second information field, and the first information field or the second information field is an RIV. (Appendix 26) The method of claim 7, wherein the DCI includes a first information field or a second information field, and the first information field or the second information field is used to indicate a cell subset index. (Appendix 27) 8. The method of claim 7, wherein the DCI includes a first information field and a second information field, the second information field being used to indicate a cell subset index, and the first information field being used to indicate a cell scheduled by the DCI in a cell subset indicated by the second information field. (Appendix 28) A method according to any one of Supplementary Notes 19 to 27, further comprising a step in which the terminal device determines one or more cells scheduled by the DCI based on the value of the second information field and / or the first information field. (Appendix 29) The method of claim 1, further comprising a step of the terminal device determining one or more cells scheduled by the DCI based on a format of the DCI. (Appendix 30) A method according to any one of Supplementary Notes 10 to 13, further comprising a step in which the terminal device determines one or more cells scheduled by the DCI based on values ​​of some of the fields of the third information field and / or the fourth information field. [Network side] (Appendix 31) A data transmission / reception method applied to a network device, comprising: a network device transmitting downlink control information (DCI) in a first cell, the DCI being used to schedule a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell; and the network device transmitting the PDSCH and / or receiving the PUSCH in the at least two cells. (Appendix 32) A network device comprising: a memory having a computer program stored therein; and a processor, the processor being configured to execute the computer program to realize the data transmission and reception method described in Appendix 31. (Appendix 33) A terminal device including a memory in which a computer program is stored and a processor, the processor being configured to execute the computer program to realize a data transmission and reception method described in any one of Supplementary Notes 1 to 30. (Appendix 34) A communication system comprising a terminal device according to claim 33 and / or a network device according to claim 32. [Device side] (Appendix 1) A data transmission / reception device applied to a terminal device, a first receiver for receiving downlink control information (DCI) in a first cell, the DCI being used for scheduling a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell; A transceiver unit that receives the PDSCH and / or transmits the PUSCH in the at least two cells. (Appendix 2) 2. The apparatus of claim 1, wherein the first cell and the at least one second cell include all or some cells in a primary cell group or a secondary cell group or a same PUCCH group. (Appendix 3) The apparatus of claim 1 or 2, wherein the first cell and the at least one second cell include a cell that can be scheduled by the first cell or a cell that can be scheduled by the DCI. (Appendix 4) The apparatus of any one of claims 1 to 3, wherein the first cell and / or the at least one second cell includes at least one cell subset, and cells in different cell subsets cannot be scheduled by the same DCI. (Appendix 5) 2. The apparatus of claim 1, wherein the DCI is in a first DCI format. (Appendix 6) 6. The apparatus of claim 5, wherein the first DCI format supports only multi-cell scheduling. (Appendix 7) An apparatus as described in any of Supplementary Notes 1 to 6, wherein the DCI includes a first information field and / or a second information field, and the first information field and / or the second information field are used to indicate a cell scheduled by the DCI. (Appendix 8) 8. The apparatus of claim 1, wherein the DCI is used to simultaneously schedule the first cell and / or the at least one second cell. (Appendix 9) 9. The apparatus of claim 8, wherein the first cell and / or the at least one second cell are predefined or configured. (Appendix 10) An apparatus as described in any of Supplementary Notes 1 to 7, wherein the DCI includes or does not include a third information field, and if one or more cells corresponding to the third information field are not scheduled, the value of the third information field is a first value, or the DCI does not include the third information field, or the terminal device ignores the third information field. (Appendix 11) The apparatus of claim 10, wherein the DCI includes at least two third information fields. (Appendix 12) The device of any of Supplementary Notes 1 to 7, wherein the DCI includes a fourth information field, the fourth information field includes a first field and / or a second field, and when one or more cells corresponding to the first field or the second field are not scheduled, the value of the first field or the second field is a second value, or the fourth information field does not include the first field or the second field, or the terminal device ignores the first field or the second field. (Appendix 13) 13. The apparatus of claim 12, wherein the bits included in the second field and the bits included in the first field may or may not have a common set. (Appendix 14) The apparatus of any one of Supplementary Notes 1 to 13, further comprising: a second receiving unit configured to receive first configuration information and / or first activation / deactivation information, the first configuration information and / or the first activation / deactivation information including information indicating the first cell and / or the at least one second cell, and / or information of at least one cell subset, and / or information of a sub-combination of cells that can be scheduled by the same DCI among the first cell and / or the at least one second cell. (Appendix 15) The apparatus of claim 14, wherein the first configuration information includes cell configuration information of the first cell, and / or cell configuration information of the second cell, and / or configuration information of a primary cell group or a secondary cell group. (Appendix 16) The apparatus of Supplementary Note 14, further comprising: a first determination unit that determines a cell or a cell subset corresponding to a value of an information field or a value of a part of a field of an information field in the DCI based on the first configuration information and / or the first activation / deactivation information. (Appendix 17) The apparatus of claim 14, wherein the first configuration information includes cell configuration information of the first cell and / or the second cell, and the cell configuration information of the first cell and / or the second cell includes first indication information, and the first indication information is used to indicate one or more values ​​of a first information field and / or one or more values ​​of a second information field corresponding to the first cell or the second cell. (Appendix 18) The apparatus of claim 14, wherein the first configuration information includes cell configuration information of the first cell and / or configuration information of a primary cell group or a secondary cell group, and the cell configuration information of the first cell and / or the configuration information of the primary cell group or the secondary cell group includes second indication information, and the second indication information is used to indicate a value of a first information field and / or one or more values ​​of a second information field corresponding to the first cell and / or at least one cell. (Appendix 19) The apparatus of claim 7, wherein the DCI includes a first information field, the first information field being used to indicate the at least two cells. (Appendix 20) 8. The apparatus of claim 7, wherein the DCI includes a first information field, the first information field being used to indicate one cell of the at least two cells. (Appendix 21) The apparatus of claim 20, wherein the DCI further includes a second information field, the second information field being used to indicate a scheduled cell subset from one or more cell subsets in which the cell is located, or to indicate a scheduled cell subset from one or more cell subsets associated with the cell, or to indicate one or more cells other than the cell among the cells scheduled by the DCI. (Appendix 22) The device described in Supplementary Note 7, wherein the first information field includes a third field and / or a fourth field, and if one or more cells corresponding to the third field or the fourth field are not scheduled, the value of the third field or the fourth field is a third value, or the fourth information field does not include the third field or the fourth field, or the terminal device ignores the third field or the fourth field. (Appendix 23) The device described in Supplementary Note 7, wherein the DCI includes a plurality of first information fields, and when one or more cells corresponding to the first information fields are not scheduled, the value of the first information field is a third value, or the DCI does not include the first information field, or the terminal device ignores the first information field. (Appendix 24) 8. The apparatus of claim 7, wherein the DCI includes a first information field or a second information field, the first information field or the second information field being a bitmap, and a first bit and a second bit in the bitmap correspond to different cells or cell subsets. (Appendix 25) The apparatus of claim 7, wherein the DCI includes a first information field or a second information field, and the first information field or the second information field is an RIV. (Appendix 26) The apparatus of claim 7, wherein the DCI includes a first information field or a second information field, the first information field or the second information field being used to indicate a cell subset index. (Appendix 27) The apparatus of claim 7, wherein the DCI includes a first information field and a second information field, the second information field being used to indicate a cell subset index, and the first information field being used to indicate a cell scheduled by the DCI in a cell subset indicated by the second information field. (Appendix 28) 28. The apparatus of claim 19, further comprising: a second determination unit configured to determine one or more cells scheduled by the DCI based on a value of the second information field and / or the first information field. (Appendix 29) The apparatus of claim 1, 5, or 6, further comprising: a third determination unit configured to determine one or more cells scheduled by the DCI based on a format of the DCI. (Appendix 30) An apparatus as described in any of Supplementary Notes 10 to 13, further comprising: a fourth determination unit that determines one or more cells scheduled by the DCI based on values ​​of some fields of the third information field and / or the fourth information field. [Network side] (Appendix 31) A data transmission / reception device applied to a network device, a first transmitter for transmitting downlink control information (DCI) in a first cell, the DCI being used for scheduling a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell; a second transceiver unit configured to transmit the PDSCH and / or receive the PUSCH in the at least two cells. (Appendix 32) and a second receiving unit configured to receive first configuration information and / or first activation / deactivation information, the first configuration information and / or the first activation / deactivation information including information indicating the first cell and / or the at least one second cell, and / or information of at least one cell subset, and / or information of a sub-combination of cells that can be scheduled by the same DCI among the first cell and / or the at least one second cell.

Claims

1. A data transmission / reception device applied to a terminal device, a first receiver for receiving downlink control information (DCI) in a first cell, the DCI being used for scheduling a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell; A transceiver unit that receives the PDSCH and / or transmits the PUSCH in the at least two cells.

2. 2. The apparatus of claim 1, wherein the first cell and the at least one second cell include all or some cells in a primary cell group or a secondary cell group or a same PUCCH group.

3. The apparatus of claim 1 , wherein the first cell and the at least one second cell include a cell schedulable by the first cell or a cell schedulable by the DCI.

4. 2. The apparatus of claim 1, wherein the first cell and / or the at least one second cell comprises at least one cell subset, and cells in different cell subsets cannot be scheduled with the same DCI.

5. 2. The apparatus of claim 1, wherein the DCI includes a first information field and / or a second information field, the first information field and / or the second information field being used to indicate a cell scheduled by the DCI.

6. The apparatus of claim 1 , wherein the DCI is used to simultaneously schedule the first cell and / or the at least one second cell.

7. 2. The device of claim 1 , wherein the DCI includes or does not include a third information field, one or more cells corresponding to the third information field are not scheduled, a value of the third information field is a first value, or the DCI does not include the third information field, or the terminal device ignores the third information field.

8. 2. The device of claim 1, wherein the DCI includes a fourth information field, the fourth information field includes a first field and / or a second field, one or more cells corresponding to the first field or the second field are not scheduled, a value of the first field or the second field is a second value, or the fourth information field does not include the first field or the second field, or the terminal device ignores the first field or the second field.

9. 2. The apparatus of claim 1, further comprising: a second receiver configured to receive first configuration information and / or first activation / deactivation information, the first configuration information and / or the first activation / deactivation information including information indicating the first cell and / or the at least one second cell, and / or information of at least one cell subset, and / or information of a sub-combination of cells that can be scheduled by the same DCI among the first cell and / or the at least one second cell.

10. 10. The apparatus of claim 9, further comprising: a first determination unit configured to determine a cell or a cell subset corresponding to a value of an information field or a value of a part of fields in the DCI based on the first configuration information and / or the first activation / deactivation information.

11. 10. The apparatus of claim 9, wherein the first configuration information comprises cell configuration information of the first cell and / or the second cell, the cell configuration information of the first cell and / or the second cell comprises first indication information, the first indication information being used to indicate one or more values ​​of a first information field and / or one or more values ​​of a second information field corresponding to the first cell or the second cell.

12. 10. The apparatus of claim 9, wherein the first configuration information comprises cell configuration information of the first cell and / or configuration information of a primary cell group or a secondary cell group, and the cell configuration information of the first cell and / or the configuration information of the primary cell group or the secondary cell group comprises second indication information, and the second indication information is used to indicate a value of a first information field and / or one or more values ​​of a second information field corresponding to the first cell and / or at least one cell.

13. 6. The apparatus of claim 5, wherein the DCI further comprises a second information field, the second information field being used to indicate a scheduled cell subset from one or more cell subsets in which the cell is located, or to indicate a scheduled cell subset from one or more cell subsets associated with the cell, or to indicate one or more cells other than the cell scheduled by the DCI.

14. The device of claim 5, wherein the DCI includes a plurality of first information fields, and when one or more cells corresponding to the first information fields are not scheduled, the value of the first information field is a third value, or the DCI does not include the first information field, or the terminal device ignores the first information field.

15. 6. The apparatus of claim 5, wherein the DCI comprises a first information field or a second information field, the first information field or the second information field being a bitmap, and a first bit and a second bit in the bitmap correspond to different cells or cell subsets.

16. The apparatus of claim 5 , wherein the DCI includes a first information field or a second information field, the first information field or the second information field being an RIV.

17. The apparatus of claim 5 , wherein the DCI includes a first information field or a second information field, the first information field or the second information field being used to indicate a cell subset index.

18. 6. The apparatus of claim 5, wherein the DCI includes a first information field and a second information field, the second information field being used to indicate a cell subset index, and the first information field being used to indicate a cell scheduled by the DCI in a cell subset indicated by the second information field.

19. A data transmission / reception device applied to a network device, a first transmitter for transmitting downlink control information (DCI) in a first cell, the DCI being used for scheduling a PDSCH and / or a PUSCH in at least two cells among the first cell and / or at least one second cell; a second transceiver unit configured to transmit the PDSCH and / or receive the PUSCH in the at least two cells.

20. A communication system including a terminal device and / or a network device, the terminal device including a data transmitting / receiving device according to any one of claims 1 to 18, and the network device including a data transmitting / receiving device according to claim 19.

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