Data transmission and reception method and apparatus

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] Embodiments of the present invention relate to the field of communication technologies.

Background Art

[0002] The Physical Downlink Shared Channel (PDSCH) is one of the physical downlink channels in a wireless communication system and is used to carry downlink data. The 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 for scheduling the PDSCH or PUSCH are defined. To meet different scheduling requirements, the specific information and / or size included in the DCI of different DCI formats are different.

[0003] Note that the above description of the background art is only for more clearly and completely explaining the configuration of the present invention and is for the purpose of making those skilled in the art understand. These configurations should not be construed as well-known technologies to those skilled in the art just because they are described in the background art part of the present invention.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Currently, radio resource control is configured so that carriers (cells) perform either self-scheduling or cross-carrier scheduling. Self-scheduling means that PDSCH and / or PUSCH on a carrier are scheduled by DCI transmitted on that carrier. Cross-carrier scheduling means that PDSCH and / or PUSCH on a carrier (cell) are scheduled by DCI transmitted on other carriers (cells).

[0005] Currently, DCI only supports scheduling one serving cell at a time, including in the case of self-scheduling and cross-carrier scheduling. To reduce the burden of DCI monitoring by terminal equipment and to reduce power consumption and complexity, NR systems will support scheduling PDSCH and / or PUSCH for multiple serving cells via a single DCI, but currently there is no specific scheme for how to support scheduling PDSCH and / or PUSCH for multiple serving cells via a single DCI (e.g., how to instruct / determine one or more serving cells scheduled by a single DCI).

[0006] In view of at least one of the above-mentioned problems, an embodiment of the present invention provides a data transmission and reception method and apparatus. [Means for solving the problem]

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

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

[0009] Another embodiment 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 embodiment, and the network device includes a data transmission / reception device of the above embodiment.

[0010] One of the advantageous effects of the embodiments of the present invention is as follows: It is possible to support scheduling of PDSCH and / or PUSCH for multiple serving cells via a single DCI, thereby reducing the burden of DCI monitoring by terminal devices and lowering power consumption and complexity.

[0011] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail, illustrating methods in which the principles of the present invention can be employed. However, the scope of embodiments of the present invention is not limited to these. Embodiments of the present invention include modified, altered, and equivalent forms within the scope of the gist and items of the appended claims.

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

[0013] In this text, the terms "includes / have" mean the presence of a feature, component, step, or constituent element, and do not exclude the presence or addition of one or more other features, components, steps, or constituent elements. [Brief explanation of the drawing]

[0014] Elements and features described in one drawing and one embodiment of the embodiments of the present invention may be combined with elements and features shown in one or more drawings or embodiments. In addition, similar reference numerals in the drawings may indicate corresponding elements in multiple drawings, and may indicate corresponding elements used in one or more embodiments. [Figure 1] This is a schematic diagram of a communication system according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of an example of a data transmission and reception method according to an embodiment of the present invention. [Figure 3A] Figures 3A and 3B are schematic diagrams of an example of a bundling cell according to an embodiment of the present invention. [Figure 3B] Figures 3A and 3B are schematic diagrams of an example of a bundling cell according to an embodiment of the present invention. [Figure 4A] Figures 4A to 4C are schematic diagrams of a DCI information field according to an embodiment of the present invention. [Figure 4B] Figures 4A to 4C are schematic diagrams of a DCI information field according to an embodiment of the present invention. [Figure 4C] Figures 4A to 4C are schematic diagrams of a DCI information field according to an embodiment of the present invention. [Figure 5] This is a schematic diagram of an example of a data transmission and reception method according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of an example of a data transmission and reception device according to an embodiment of the present invention. [Figure 7] This is a schematic diagram of an example of a data transmission and reception device according to an embodiment of the present invention. [Figure 8] This is a schematic diagram of a network device according to an embodiment of the present invention. [Figure 9] This is a schematic diagram of a terminal device according to an embodiment of the present invention.

Best Mode for Carrying Out the Invention

[0015] The above and other features of the present invention will become clear from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some embodiments in which the principles of the present invention can be adopted are shown. Note that the present invention is not limited to the described embodiments. The present invention includes all modified, deformed, and equivalent ones within the scope of the appended claims. The following describes each embodiment of the present invention with reference to the drawings. These embodiments are merely exemplary and do not limit the present invention.

[0016] In the embodiments of the present invention, terms such as "first" and "second" are used to distinguish different elements in the title, but do not represent the spatial arrangement or temporal order of these elements, etc., and these elements are not limited by these terms. The term "and / or" includes any one and all combinations of one or more of the terms listed in the related list. Terms such as "include", "comprise", "have", etc. mean the existence of the listed features, elements, elements or components, but do not exclude the existence or addition of one or more other features, elements, elements or components.

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

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

[0019] Also, the communication between devices in a communication system may be performed according to a communication protocol at any stage, and the communication protocol may include, for example, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G, New Radio (NR), etc., and / or other currently known or other communication protocols to be developed in the future, but is not limited thereto.

[0020] In an embodiment of the present invention, the term "network device" means a device in a communication system that allows a terminal device to access the communication system and provides services 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 Mobile Management Entity (MME), a gateway, a server, a Radio Network Controller (RNC), a Base Station Controller (BSC), etc.

[0021] Here, base stations may include, but are not limited to, node B (NodeB or NB), evolutionary node B (eNodeB or eNB), and 5G base stations (gNB), as well as remote radio heads (RRH), remote radio units (RRU), relays, or low-power nodes (e.g., femto, pico). The term “base station” may also include some or all of their functions, and each base station may provide communication coverage to a specific geographic area. The term “cell” may mean a base station and / or its coverage area, depending on the context in which the term is used.

[0022] In embodiments of the present invention, the terms "User Equipment" (UE) or "Terminal Equipment" (TE) refer to equipment that accesses a communication network and receives network services, for example, via a network device. Terminal equipment may be fixed or mobile and may be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc.

[0023] Here, terminal devices may include, but are not limited to, mobile phones (cellular phones), personal digital assistants (PDAs), radio modulators / demodulators, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smartphones, smartwatches, digital cameras, and the like.

[0024] Furthermore, in scenarios such as the Internet of Things (IoT), the user device may be a monitoring or measurement device or apparatus, and may include, but is not limited to, machine-type communication (MTC) terminals, in-vehicle communication terminals, industrial wireless devices, surveillance cameras, device-to-device (D2D) terminals, and machine-to-machine (M2M) terminals.

[0025] Furthermore, the terms “Network side” or “Network device side” mean the side of the network, which may be a base station or include one or more of the above-mentioned network devices. The terms “User side” or “Terminal side” or “Terminal device side” mean the side of the user or terminal, which may be a UE or include one or more of the above-mentioned terminal devices. In this specification, unless otherwise specified, “device” may mean network device or terminal device.

[0026] In the following explanation, the terms "uplink control signal" and "uplink control information (UCI)" or "physical uplink control channel (PUCCH)" may be substituted for each other, as long as no confusion arises. The terms "uplink data signal" and "uplink data information" or "physical uplink shared channel (PUSCH)" may be substituted for each other. "Cell" and "carrier" and "serving cell" and "carrier component" and "serving carrier" may be substituted for each other. The terms "downlink control signal" and "downlink control information (DCI)" or "physical downlink control channel (PDCCH)" may be substituted for each other. The terms "downlink data signal" and "downlink data information" or "physical downlink shared channel (PDSCH)" may be substituted for each other. DCI and DCI format may be substituted for each other.

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

[0028] In embodiments of the present invention, the upper-layer signaling may be, for example, a radio resource control (RRC) signaling. The RRC signaling includes, for example, an RRC message, and includes, 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 contained in an information field) included in the RRC message or RRC information element. The upper-layer signaling may also be, for example, a medium access control (MAC) signaling, or may be referred to as a MAC control element (MAC CE). However, the present invention is not limited to these.

[0029] In the embodiments of the present invention, "multiple" means at least two, or two or more.

[0030] In embodiments of the present invention, predefined means that no additional configuration is required and that it is specified by a protocol or determined according to rules specified by a protocol. Configuration means that it is indicated directly or indirectly by a network device via upper-layer signaling and / or physical layer signaling. Physical layer signaling means, but is not limited to, control information (DCI) or control information carried via a physical control channel or sequence.

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

[0032] Figure 1 is a schematic diagram of a communication system according to an embodiment of the present invention, schematically showing examples of terminal devices and network devices. As shown in Figure 1, the communication system 100 may include a network device 101 and terminal devices 102 and 103. For the sake of explanation, Figure 1 is described using two terminal devices and one network device as an example, but embodiments of the present invention are not limited thereto.

[0033] In embodiments of the present invention, existing services or services that can be implemented in the future can be provided between the network device 101 and the terminal devices 102 and 103. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable and low-latency communication (URLLC), and related communications for terminal devices with reduced capabilities.

[0034] Although Figure 1 shows that both terminal devices 102 and 103 are located within the coverage area of ​​network device 101, the present invention is not limited to this. Neither of the two terminal devices 102 and 103 are located within the coverage area of ​​network device 101, or one terminal device 102 may be located within the coverage area of ​​network device 101 and the other terminal device 103 may be located outside the coverage area of ​​network device 101.

[0035] Currently, cross-carrier scheduling is comprised of an RRC cross-carrier scheduling configuration (CrossCarrierSchedulingConfig) information element, which is transmitted via the serving cell configuration (ServingCellConfig) of the serving cell. The CrossCarrierSchedulingConfig determines whether the serving cell is cross-carrier scheduled by other serving cells or whether it can cross-carrier schedule other serving cells.

[0036] If a serving cell can cross-carrier schedule other serving cells, it is referred to as, for example, a scheduling cell. If a serving cell is cross-carrier scheduled by other serving cells, it is referred to as, for example, a scheduled cell. A scheduling cell can carry downlink control information (DCI) for scheduling scheduled cells.

[0037] Currently, DCI only supports scheduling a single serving cell, including in the case of self-scheduling and cross-carrier scheduling. Let's assume that CrossCarrierSchedulingConfig is configured so that cell C is cross-scheduled by cell A, and that the Carrier Indicator Field (CIF) value corresponding to cell C is set to 1. If the DCI's CIF value for scheduling PDSCH / PUSCH on cell A is 1, then this DCI will schedule PDSCH / PUSCH on cell C.

[0038] To reduce the burden of DCI monitoring by terminal devices and lower power consumption and complexity, NR systems support scheduling PDSCH and / or PUSCH for multiple serving cells via a single DCI. However, currently, there is no specific scheme for how to support scheduling PDSCH and / or PUSCH for multiple serving cells via a single DCI (e.g., how to instruct / determine one or more serving cells scheduled by a single DCI).

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

[0040] <Example 1> An embodiment of the present invention provides a data transmission and reception method, which will be described from the perspective of the terminal device.

[0041] Figure 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 Figure 2, the method includes the following steps.

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

[0043] Step 202: The terminal device receives a PDSCH scheduled by the DCI and / or transmits a PUSCH scheduled by the DCI in 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 a 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, and 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, any of the multiple first cells can schedule PDSCH and / or PUSCH in the one second cell, and at least one second cell corresponding to each of the multiple first cells each includes the one second cell.

[0046] In some embodiments, one cell is both a first cell and a second cell, in other words, the one cell may be used to schedule PDSCH and / or 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 scheduling of a first cell to a first or second cell may be referred to as the scheduling of PDSCH and / or PUSCH in the first or second cell, or the scheduling of a cell by a DCI may be referred to as the scheduling of PDSCH and / or PUSCH in the first or second cell, or as the scheduling of PDSCH and / or PUSCH in the first or second cell by a DCI received in the first cell. A DCI for scheduling PDSCH may be referred to as a downlink assignment (DL assignment), and a DCI for scheduling PUSCH may be referred to as an uplink grant (UL grant). In some embodiments, the DCI is used to schedule PDSCH and / or PUSCH in at least two cells. This reduces the burden of DCI monitoring by terminal devices and reduces power consumption and complexity. The at least two cells (hereinafter abbreviated as M cells, where M is an integer greater than or equal to 2) are the first cell and / or M cells from at least one (N, where N is an integer greater than or equal to 1) second cell. In other words, each of the M cells may be M cells from N second cells, or the M cells may be one first cell and M cells from N second cells.

[0048] The following describes the range of the first cell and the N second cells.

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

[0050] In some embodiments, the first cell and / or at least one second cell contains at least one (P) cell subsets, 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, then the M cells belong to the same cell subset, i.e., there are no two cells in the M cells that are distributed in different cell subsets.

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

[0052] In some embodiments, a cell subcombination means a subset of set 1, set 2, set 3, or set 4. For example, cells in set 1, set 2, set 3, or set 4 that can be scheduled by the same DCI may be considered a cell subcombination. A cell subset or cell subcombination may contain one or more cells, different cell subsets may or may not have a common set, different cell subcombinations may or may not have a common set, and cell subsets and cell subcombinations may be the same or different.

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

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

[0055] In some embodiments, the DCI format may be a first DCI format, which is, 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 newly introduced DCI format for supporting multi-cell scheduling (e.g., DCI format 1_3 or 0_3). However, embodiments of the present invention are not limited to these. For example, a DCI format for supporting only multi-cell scheduling is not distinguished from other DCI formats, and these other DCI formats are any DCI formats for scheduling PDSCH and / or PUSCH. The description of such examples is omitted here.

[0056] In other words, the DCI schedules PDSCH and / or PUSCH in M ​​cells, but the DCI may support only multi-cell scheduling, or it 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 they may be dynamically (explicitly or implicitly) represented by the DCI, for example, by at least one of the first, second, third, and fourth information fields 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. The first configuration information and / or 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 subset of cells among the first cell and / or at least one second cell that can be scheduled by the same DCI.

[0059] In some embodiments, the first configuration information is transported by RRC signaling and may include 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 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 later with reference to examples.

[0060] In some embodiments, the first activation / deactivation information may be carried by MAC CE. The first activation / deactivation information is used to activate and / or deactivate a predefined cell subset and / or a cell subset configured by the first configuration information and / or a subcombination 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 first configuration information and / or first activation / deactivation information without referring to information fields in the DCI, or the M scheduled cells may be determined based on first configuration information and / or first activation / deactivation information by referring to information fields in the DCI. For example, a cell or a subset of cells corresponding to the value of an information field or a subset of fields in the DCI is determined based on the first configuration information and / or first activation / deactivation information.

[0062] The following explains each of them.

[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 a first cell and N second cells scheduled by the DCI. The first cell and 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 a 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 for the first cell and N second cells (second instruction information). The first configuration information pertains to a first DCI format, and if there are multiple first DCI formats, the first configuration information constitutes information for the first cell and N second cells for each different first DCI format (for example, for uplinks and downlinks). For example, the first configuration information includes CIF values ​​corresponding to the first cell and N second cells, and preferably further includes first DCI format instruction information corresponding to the information constituting the first cell and N second cells.

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

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

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

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

[0069] In some embodiments, the first information field may utilize an existing carrier indication field (CIF) of DCI (or the indication method may be modified), and the second information field may be a newly added information field; however, these are merely examples, and embodiments of the present invention are not limited thereto.

[0070] The following describes the instruction / determination methods for cells scheduled by DCI, referring to Figures 4A to 4C.

[0071] In some embodiments, as shown in Figure 4C, the DCI does not include an information field that explicitly indicates the scheduled cells. The DCI may or may 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. There are at least two third information fields, and the bit positions of each of the at least two information fields in the DCI are consecutive or discrete, and each third information field includes one or more consecutive bits, and the terminal device may determine the M cells scheduled by the DCI based on the values ​​of the third information fields.

[0072] For example, the third information field is a cell-specific or cell-group-specific information field; that is, different third information fields correspond to different cell subsets or cells, and the third information field, by its first value, indicates that the corresponding cell subset or cell is not scheduled. In other words, if a cell subset or cell is not scheduled, the corresponding third information field is set to the first value, or the third information field is omitted. 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 corresponding cell subset. The third information field consists of three fields, each corresponding to cell subset 1, cell subset 2, and cell subset 3. If the value of the first third information field is the first value, or if the first third information field is not included, then cell subset 1 is not scheduled. If the value of the second third information field is not the first value (but the fourth value), then 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 (but the fifth value), then 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 or second field are not scheduled, the value of the first or second field is the second value, or the fourth information field does not include the first or second field, or the terminal device ignores the first or second field. Based on the value of the fourth information field, the terminal device can determine the M cells to be scheduled by the DCI.

[0074] For example, the fourth information field includes the first field and / or the second field, and the bits in the second field and the bits in the first field may or may 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 are set to the second value or not include the first field and / or the second field. For example, the fourth information field includes the first field and the 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. The explanation of other examples is omitted here.

[0075] As described above, based on the first configuration information, it is possible to determine the value of the third information field or the fourth information field, or the cell or cell subset corresponding to the value of some fields in the fourth information field. The specific embodiment is as described above, and its explanation is omitted here.

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

[0077] For example, one or more corresponding CIF values ​​may be predefined and / or configured for each cell, or one or more cells may be predefined or configured for each CIF. The following example illustrates the configuration of one or more corresponding CIF values ​​for each cell (configured by the first configuration information). The method for predefining one or more corresponding CIF values ​​is similar and will not be explained here.

[0078] For example, the first configuration information includes cell configuration information (cross-carrier scheduling configuration information) for the first cell and / or the second cell, the cell configuration information for the first cell and / or the second cell includes first instruction information, the first instruction information 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 transmitted by RRC signaling. Based on the first configuration information, the terminal device can determine the correspondence between the first cell and / or the second cell and the first information field value (the cell or cell subset corresponding to the value of the first information field), in other words, it can know which cell of the first cell and / or the second cell each first information field value corresponds to. Furthermore, if the DCI indicates the first information field value, the M scheduled cells can be determined by referring to this correspondence.

[0079] The first instruction information may represent one or more first information field values ​​in sequence or bitmap format. The cross-carrier scheduling configuration information of the first cell can be represented using the abstract syntax notation ASN.1 data format (sequence value) as follows:

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

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

[0082] Table 1 is merely an illustrative description, and the present invention is not limited thereto, and may include, for example, those shown in Table 2 or Table 3 below.

[0083] [Table 3]

[0084] [Table 4] The cross-carrier scheduling configuration information for the first cell can be represented using the abstract syntax notation ASN.1 data format (bitmap) as follows:

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

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

[0087] In conventional methods, 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. To support multi-cell scheduling, the range of first information field values ​​that can be indicated by the first instruction information may include or exclude 0.

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

[0089] For example, in Table 1, the range of values ​​for the first information field that can be indicated by the first instruction information for the second cell does not include 0, and in Table 3, the range of values ​​for 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 indicator information for the first cell all include 0, then, when the first indicator information is not included, the value of the configured first information field is 0 by default.

[0091] In the example above, the first information field as a whole represents M cells scheduled by DCI. In some embodiments, the first information field is used to include a third field and / or a fourth field. If one or more cells corresponding to the third or fourth field are not scheduled, the value of the third or fourth field is the third value, and the terminal device can determine the M cells scheduled by 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 in the fourth field and the bits in the third field may or may not have an intersection. Different fields correspond to different cell subsets or cells, and the third field and / or fourth field, by their third value, indicate that the corresponding cell subset or cell is not scheduled. In other words, if a subcell or cell is not scheduled, the corresponding third field and / or fourth field are set to the third value. For example, the first information field includes third and fourth fields corresponding to cell subset 1 and cell subset 2, respectively. The value of the third field is the third value, cell subset 1 is not scheduled, and the value of the fourth field is not the third value, cell subset 2 is scheduled. Specific examples are not shown here.

[0093] In the example above, 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, where different first information fields correspond to different cell subsets or cells. For example, if no cells or cell subsets corresponding to a first information field are scheduled, the value of the first information field is a third value.

[0094] For example, the first information field, by a third value, indicates that the corresponding cell subset or cell is not scheduled. 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 described above, different first information fields, or cells or cell subsets corresponding to different fields, may or may not have a common set. The method for configuring the correspondence between the first information field or a field and a cell or cell subset is the same as the first configuration information described above, and its explanation is omitted here. Based on the first configuration information, the terminal device can determine the cells or cell subsets corresponding to the values ​​of the first information field or the values ​​of some fields in the first information field.

[0096] In some embodiments, the first information field described above indicates a scheduled cell by indicating a CIF value, but embodiments of the present invention are not limited thereto. For example, the scheduled cell may not be indicated by indicating a CIF value, as illustrated below.

[0097] In some embodiments, the DCI includes a first or second information field. The first or second information field is used to indicate the scheduled cell in the form of a bitmap or RIV, or to indicate a cell subset index. The terminal device determines the cell scheduled by the DCI based on the values ​​of the first or 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 the first cell and / or N second cells, that is, 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 DCI.

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

[0100] For example, the range of cells that can be indicated by the bitmap is the cells associated with the cell in which the CIF value is composed or predefined, preferably cells other than the first cell or the second cell in which the CIF value is composed; in other words, the bitmap indicates the cells associated with the cell corresponding to the CIF value in DCI. Unlike the above, the associated cells are not limited to the same cell, and the associated cells may span a subset of cells.

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

[0102] As described above, the correspondence between the first or second information field and a cell or cell subset is the same as that of the first configuration information described above, and the terminal device can determine the cell or cell subset corresponding to the value of the first or second information field based on the first configuration information. The explanation of this is omitted here.

[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, as in the prior art, if the value of the first information field is configured or predefined, the value of the first information field corresponds one-to-one with a cell, and the first configuration information indicates information for at least one cell subset. For example, the cell configuration information for one cell indicates that the at least one cell subset is associated with that one cell. Thus, if the DCI indicates a value for one first information field, the at least one cell subset associated with the cell corresponding to the value of the first information field can be determined based on the first configuration information. The cells in the cell corresponding to the value of the one first information field and the at least one cell subset associated with that cell are the M cells scheduled by the DCI.

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

[0105] [Table 6] In some embodiments, the DCI includes a first information field and a second information field, which together indicate the cells to be scheduled by the DCI. The terminal device determines the M cells scheduled by the DCI based on the values ​​of the first and second information fields.

[0106] For example, the second information field is used to indicate the index of a cell subset, and the first information field is used to indicate the cells scheduled by the DCI within the cell subset indicated by the second information field. The range of scheduled cells indicated by the first information field differs from the above method in that it includes cells in the first cell and a cell subset of the second cell, but the specific indication method may be explained by the above embodiment, and is omitted here.

[0107] In some embodiments, the DCI includes a second information field indicating 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 constitute a pattern of multiple scheduled cells. Each pattern has a different number of scheduled cells, and each pattern indicates which cells to schedule. This allows the terminal device to determine the pattern corresponding to the number of scheduled cells indicated by the second information field, and then determine the M cells scheduled based on the pattern. As described above, when DCI determines which cells are scheduled based on the values ​​of the first and / or second information fields, if it is determined that a cell or cell subset is not scheduled, the third information field corresponding to the cell or cell subset will have the second value, or the corresponding third information field will not be included, or the terminal device will ignore the corresponding third information field, or the first or second field of the fourth information field corresponding to the cell or cell subset will have the second value, or the corresponding third information field will not be included, or the terminal device will ignore the corresponding third information field. Specific embodiments may be described by referring to the above embodiments, which will not be explained here.

[0108] According to this embodiment, it is possible to support scheduling PDSCH and / or PUSCH for multiple serving cells via a single DCI, thereby reducing the burden of DCI monitoring on terminal devices and lowering power consumption and complexity.

[0109] <Example 2> The embodiments of the present invention provide a data transmission and reception method and will be described from the network device side. Here, the explanation of parts that overlap with Embodiment 1 will be omitted.

[0110] Figure 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 Figure 5, the method includes the following steps.

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

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

[0113] In some embodiments, the embodiments of steps 501 to 502 refer to Example 1, and any overlapping explanations are omitted.

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

[0115] For information on how to specify / determine cells scheduled by DCI, please refer to Example 1, which will be omitted here.

[0116] According to this embodiment, it is possible to support scheduling PDSCH and / or PUSCH for multiple serving cells via a single DCI, thereby reducing the burden of DCI monitoring on terminal devices and lowering power consumption and complexity.

[0117] <Example 3> Embodiments of the present invention provide a data transmission and reception device. This device may be, for example, a terminal device, or one or more components configured within a terminal device. Descriptions of aspects similar to those in Embodiment 1 are omitted.

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

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

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

[0121] In some embodiments, the first cell and at least one second cell include all or some cells in a primary cell group, 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 that can be scheduled by the first cell, or a cell that can be scheduled by the DCI.

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

[0124] In some embodiments, the DCI is 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 the cell to be scheduled by the DCI.

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

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

[0128] In some embodiments, the DCI may or may 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 may not include the third information field, or the terminal device may ignore the third information field. For example, the DCI may include at least two third information fields.

[0129] 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 the 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 in the second field and the bits in the first field may or may not have a common set.

[0131] In some embodiments, the apparatus further includes the following parts:

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

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

[0134] In some embodiments, the apparatus further includes the following parts:

[0135] A first determination unit (not shown) determines a cell or a subset of cells corresponding to the value of an information field or a subset of fields 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 for the first cell and / or the second cell, the cell configuration information for the first cell and / or the second cell includes first indicator information, the first indicator 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.

[0137] In some embodiments, the first configuration information includes cell configuration information for the first cell and / or configuration information for a primary cell group or a secondary cell group, the cell configuration information for the first cell and / or configuration information for a primary cell group or a secondary cell group includes second indicator information, the second indicator information is used to indicate the 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, which is used to indicate the at least two cells.

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

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

[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 or fourth field are not scheduled, the value of the third or fourth field is the third value, or the fourth information field does not include the third or fourth field, or the terminal device ignores the third or 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 or second information field being a bitmap, where the first and second bits 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 or second information field being a resource indicator value (RIV).

[0145] In some embodiments, the DCI includes a first or second information field, which is 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 the cell scheduled by the DCI within the cell subset indicated by the second information field.

[0147] In some embodiments, the apparatus further includes the following parts:

[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 includes the following parts:

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

[0151] In some embodiments, the apparatus further includes the following parts:

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

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

[0154] Although the above description only concerns components or modules related to the present invention, the present invention is not limited thereto. The data transmission / reception device 600 may further include other components or modules. For specific details of these components or modules, refer to related technologies.

[0155] Furthermore, for the sake of clarity, Figure 6 merely illustrates the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related techniques, such as bus connections, can be used. The various components or modules described above may also be implemented by hardware devices such as processors, memory, transmitters, and receivers, and the present invention is not limited thereto.

[0156] According to this embodiment, it is possible to support scheduling PDSCH and / or PUSCH for multiple serving cells via a single DCI, thereby reducing the burden of DCI monitoring on terminal devices and lowering power consumption and complexity.

[0157] <Example 4> Embodiments of the present invention provide a data transmission and reception device. This device may be, for example, a network device, or one or more components configured within a network device. Descriptions of aspects similar to those in Embodiment 2 are omitted.

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

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

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

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

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

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

[0164] Although the above description only concerns components or modules related to the present invention, the present invention is not limited thereto. The data transmission / reception device 700 may further include other components or modules. For specific details of these components or modules, refer to related technologies.

[0165] Furthermore, for the sake of clarity, Figure 7 merely illustrates the connection relationships or signal directions between various components or modules; however, it will be apparent to those skilled in the art that various related techniques, such as bus connections, can be used. The above-mentioned components or modules may also be implemented by hardware devices such as processors, memory, transmitters, and receivers, and the present invention is not limited thereto.

[0166] According to this embodiment, it is possible to support scheduling PDSCH and / or PUSCH for multiple serving cells via a single DCI, thereby reducing the burden of DCI monitoring on terminal devices and lowering power consumption and complexity.

[0167] <Example 5> Embodiments of the present invention further provide a communication system, which may be described by referring to Figure 1, and the description of the same content as in Embodiments 1 to 4 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 configuration of the terminal device 102 may refer to the terminal device 900, and the configuration of the network device may refer to the network device 800, and their descriptions are omitted here.

[0170] Embodiments of the present invention further provide 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] Figure 8 is a schematic diagram of a network device according to an embodiment of the present invention. As shown in Figure 8, the network device 800 may include a processor 810 (e.g., a central processing unit (CPU)) and a memory 820, the memory 820 being connected to the processor 810. The memory 820 may store various types of data, and may also store an information processing program 830, which is executed under the control of the processor 810.

[0172] For example, the processor 810 may execute a program to implement the data transmission and reception method described in Example 2.

[0173] Furthermore, as shown in Figure 8, the network device 800 may further include a transceiver 840 and an antenna 850, etc. The functions of the above components are similar to those of the prior art, and their explanation is omitted here. Note that the network device 800 does not need to include all the units shown in Figure 8. Also, the network device 800 may further include units not shown in Figure 8, and prior art may be referenced.

[0174] The embodiments of the present invention further provide terminal devices, but the present invention is not limited thereto and may include other devices.

[0175] Figure 9 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in Figure 9, the terminal device 900 may include a processor 910 and a memory 920, the memory 920 storing data and programs and connected to the processor 910. Note that this figure is illustrative, and this structure may be supplemented or replaced with other types of structures to realize communication functions or other functions.

[0176] For example, the processor 910 may execute a program to implement the data transmission and reception method described in Example 1.

[0177] Furthermore, as shown in Figure 9, the terminal device 900 may further include a communication module 930, an input unit 940, a display 950, and a power supply 960, etc. The functions of the above units are the same as in the prior art, and their explanation is omitted here. Note that the terminal device 900 does not need to include all the units shown in Figure 9. Also, the terminal device 900 may further include units not shown in Figure 9, and prior art may be referenced.

[0178] In embodiments of the present invention, a computer-readable program is further provided that, when the program is executed on a terminal device, causes the terminal device to execute the data transmission and reception method described in Embodiment 1.

[0179] Embodiments of the present invention further provide a storage medium that stores a computer-readable program, and which causes a terminal device to execute the data transmission and reception method described in Embodiment 1 when the program is executed.

[0180] In embodiments of the present invention, a computer-readable program is further provided that, when the program is executed on a network device, causes the network device to execute the data transmission and reception method described in Embodiment 2.

[0181] Embodiments of the present invention further provide a storage medium that stores a computer-readable program, and which, when executing the program, causes a network device to execute the data transmission and reception method described in Embodiment 2.

[0182] The above-described apparatus and method of the present invention may be implemented by hardware, or by combining hardware and software. The present invention relates to a computer-readable program, and when the program is executed by a logic unit, the logic unit may implement the above-described apparatus or configuration requirements, or the logic unit may implement the above-described methods or steps. The present invention relates to a storage medium for storing the above-described program, such as a hard disk, magnetic disk, optical disk, DVD, flash memory, etc.

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

[0184] The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, 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 can read information from or write information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may reside in an ASIC. The software module may be stored in the memory of the mobile terminal or on a memory card inserted into the mobile terminal. For example, if the device (e.g., a mobile terminal) uses a relatively large capacity MEGA-SIM card or a high-capacity flash memory device, the software module may be stored on the MEGA-SIM card or high-capacity flash memory device.

[0185] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams shown in the drawings may be implemented by 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 unit, a discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams shown in the drawings may be implemented, for example, by a combination of computing equipment, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors combined with 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 can be made to the present invention as long as they do not deviate 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 additional information is disclosed regarding embodiments including the above-described examples. [Device side] (Note 1) A data transmission and reception method applicable to terminal devices, A step in which a terminal device receives downlink control information (DCI) in a first cell, wherein the DCI is used to schedule PDSCH and / or PUSCH in at least two of the first cell and / or at least one second cell, A method comprising the step of the terminal device receiving the PDSCH and / or transmitting the PUSCH in the at least two cells. (Note 2) The method according to Appendix 1, wherein the first cell and the at least one second cell include all or some cells in a primary cell group, a secondary cell group, or the same PUCCH group. (Note 3) The method according to Appendix 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. (Note 4) The method according to any one of the appendices 1 to 3, 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 by the same DCI. (Note 5) The DCI is the first DCI format, as described in Appendix 1. (Note 6) The first DCI format described above is the method described in Appendix 5, which supports multi-cell scheduling only. (Note 7) The DCI comprises 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, as described in any of Appendix 1 to 6. (Note 8) The DCI is used to schedule the first cell and / or the at least one second cell simultaneously, as described in any of the methods in Appendix 1 to 7. (Note 9) The first cell and / or the at least one second cell are predefined or configured as described in Appendix 8. (Note 10) The method according to any one of the appendices 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. (Note 11) The method according to Appendix 10, wherein the DCI includes at least two third information fields. (Note 12) 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 the 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, as described in any of Appendix 1 to 7. (Note 13) The method according to Appendix 12, wherein the bits included in the second field and the bits included in the first field have or do not have a common set. (Note 14) The method according to any one of Appendix 1 to 13, further comprising the step of the terminal device receiving first configuration information and / or first activation / deactivation information, wherein the first configuration information and / or the first activation / deactivation information includes 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 subset of cells among the first cell and / or the at least one second cell that can be scheduled by the same DCI. (Note 15) The method according to Appendix 14, wherein the first configuration information includes the cell configuration information of the first cell and / or the cell configuration information of the second cell and / or the configuration information of a primary cell group or a secondary cell group. (Note 16) The method according to Appendix 14, further comprising the step of the terminal device determining a cell or a subset of cells corresponding to the value of an information field or the value of a portion of an information field in the DCI based on the first configuration information and / or the first activation / deactivation information. (Note 17) The method according to Appendix 14, wherein the first configuration information includes 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 includes first instruction information, and the first instruction 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. (Note 18) The method according to Appendix 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, the cell configuration information of the first cell and / or configuration information of the primary cell group or the secondary cell group includes second instruction information, the second instruction information is used to indicate the 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. (Note 19) The method according to Appendix 7, wherein the DCI includes a first information field, the first information field is used to indicate the at least two cells. (Note 20) The method according to Appendix 7, wherein the DCI includes a first information field, the first information field is used to indicate one of the at least two cells. (Note 21) The method according to Appendix 20, wherein the DCI further includes a second information field, the second information field is used to indicate a scheduled subset of cells from one or more subsets of cells in which the cell is located, or to indicate a scheduled subset of cells from one or more subsets of cells associated with the cell, or to indicate one or more cells other than the cell among the cells scheduled by the DCI. (Note 22) The method according to Appendix 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 the 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. (Note 23) The method according to Appendix 7, wherein 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. (Note 24) The method according to Appendix 7, wherein the DCI includes a first information field or a second information field, the first information field or the second information field is a bitmap, and the first bit and the second bit in the bitmap correspond to different cells or cell subsets. (Note 25) The method according to Appendix 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. (Note 26) The method according to Appendix 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. (Note 27) The method according to Appendix 7, wherein the DCI includes a first information field and a second information field, the second information field is used to indicate a cell subset index, 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. (Note 28) The method according to any one of the appendices 19 to 27, further comprising the step of the terminal device determining one or more cells scheduled by the DCI based on the values ​​of the second information field and / or the first information field. (Note 29) The method according to Appendix 1, 5, or 6, further comprising the step of the terminal device determining one or more cells scheduled by the DCI based on the DCI format. (Note 30) The method according to any one of the appendices 10 to 13, further comprising the step of the terminal device determining one or more cells scheduled by the DCI based on the values ​​of some fields of the third information field and / or the fourth information field. [Network side] (Note 31) A data transmission and reception method applicable to network devices, A step in which a network device transmits downlink control information (DCI) in a first cell, the DCI being used to schedule PDSCH and / or PUSCH in at least two of the first cell and / or at least one second cell, A method comprising the step of the network device transmitting the PDSCH in at least two cells and / or receiving the PUSCH. (Note 32) A network device comprising a memory storing a computer program and a processor, wherein the processor is configured to implement the data transmission and reception method described in Appendix 31 by executing the computer program. (Note 33) A terminal device comprising a memory storing a computer program and a processor, wherein the processor is configured to implement a data transmission and reception method described in any of Appendix 1 to 30 by executing the computer program. (Note 34) A communication system including the terminal device described in Appendix 33 and / or the network device described in Appendix 32. [Device side] (Note 1) A data transmission and reception device applicable to terminal equipment, A first receiving unit that receives downlink control information (DCI) in a first cell, wherein the DCI is used to schedule PDSCH and / or PUSCH in at least two of the first cell and / or at least one second cell, An apparatus comprising a transceiver unit that receives the PDSCH and / or transmits the PUSCH in at least two of the aforementioned cells. (Note 2) The apparatus as described in Appendix 1, wherein the first cell and the at least one second cell include all or some cells in a primary cell group, a secondary cell group, or the same PUCCH group. (Note 3) The apparatus according to Appendix 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. (Note 4) The apparatus according to any one of the appendices 1 to 3, 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 by the same DCI. (Note 5) The DCI is the first DCI format, as described in Appendix 1. (Note 6) The aforementioned first DCI format is for the device described in Appendix 5, which supports multi-cell scheduling only. (Note 7) The DCI comprises 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, the apparatus as described in any of Appendix 1 to 6. (Note 8) The DCI is a device according to any one of the appendices 1 to 7, used to schedule the first cell and / or the at least one second cell simultaneously. (Note 9) The first cell and / or the at least one second cell are predefined or configured in the apparatus as described in Appendix 8. (Note 10) The DCI may or may 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 may not include the third information field, or the terminal device may ignore the third information field, as described in any of the appendices 1 to 7. (Note 11) The apparatus according to Appendix 10, wherein the DCI includes at least two third information fields. (Note 12) 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 the 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, as described in any of Appendix 1 to 7. (Note 13) The apparatus as described in Appendix 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. (Note 14) The apparatus according to any one of Appendix 1 to 13, further comprising: a second receiving unit for receiving first configuration information and / or first activation / deactivation information, wherein the first configuration information and / or the first activation / deactivation information includes information indicating the first cell and / or the at least one second cell, and / or information for at least one cell subset, and / or information for a subset of cells among the first cell and / or the at least one second cell that can be scheduled by the same DCI. (Note 15) The apparatus as described in Appendix 14, wherein the first configuration information includes the cell configuration information of the first cell and / or the cell configuration information of the second cell and / or the configuration information of a primary cell group or a secondary cell group. (Note 16) The apparatus according to Appendix 14, further comprising: a first determination unit that determines a cell or a subset of cells corresponding to the value of an information field or the value of a portion of the information field in the DCI, based on the first configuration information and / or the first activation / deactivation information. (Note 17) The apparatus as described in Appendix 14, wherein the first configuration information includes 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 includes first instruction information, and the first instruction 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. (Note 18) The apparatus as described in Appendix 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 configuration information of the primary cell group or the secondary cell group includes second instruction information, and the second instruction information is used to indicate the 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. (Note 19) The apparatus according to Appendix 7, wherein the DCI includes a first information field, the first information field being used to indicate the at least two cells. (Note 20) The apparatus according to Appendix 7, wherein the DCI includes a first information field, the first information field is used to indicate one of the at least two cells. (Note 21) The apparatus according to Appendix 20, wherein the DCI further includes a second information field, the second information field is used to indicate a scheduled subset of cells from one or more subsets of cells in which the cell is located, or to indicate a scheduled subset of cells from one or more subsets of cells associated with the cell, or to indicate one or more cells other than the cell among the cells scheduled by the DCI. (Note 22) The apparatus as described in Appendix 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 the 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. (Note 23) The apparatus as described in Appendix 7, wherein 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. (Note 24) The apparatus as described in Appendix 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 the first bit and the second bit in the bitmap corresponding to different cells or cell subsets. (Note 25) The apparatus as described in Appendix 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. (Note 26) The apparatus as described in Appendix 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. (Note 27) The apparatus as described in Appendix 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 the cell subset indicated by the second information field. (Note 28) The apparatus according to any one of Appendix 19 to 27, further comprising a second determination unit for determining one or more cells scheduled by the DCI based on the values ​​of the second information field and / or the first information field. (Note 29) The apparatus according to Appendix 1, 5, or 6, further comprising a third determination unit for determining one or more cells scheduled by the DCI based on the DCI format. (Note 30) The apparatus according to any one of appendices 10 to 13, further comprising a fourth determination unit that determines one or more cells scheduled by the DCI based on the values ​​of some fields of the third and / or fourth information fields. [Network side] (Note 31) A data transmission and reception device applicable to network equipment, A first transmitting unit that transmits downlink control information (DCI) in a first cell, wherein the DCI is used to schedule PDSCH and / or PUSCH in at least two of the first cell and / or at least one second cell, An apparatus comprising: a second transmitting / receiving unit that transmits the PDSCH in at least two of the cells and / or receives the PUSCH. (Note 32) The apparatus according to Appendix 31, further comprising a second receiving unit for receiving first configuration information and / or first activation / deactivation information, wherein the first configuration information and / or the first activation / deactivation information includes information indicating the first cell and / or the at least one second cell, and / or information for at least one cell subset, and / or information for a subset of cells among the first cell and / or the at least one second cell that can be scheduled by the same DCI.

Claims

1. A data transmission and reception device applicable to a terminal device, including a receiving unit and / or a transmitting unit, The receiving unit receives downlink control information (DCI) in the first cell, and the DCI is used to schedule physical downlink shared channels (PDSCH) and / or physical uplink shared channels (PUSCH) in at least two of the plurality of cells, the plurality of cells comprises at least one cell set, cells in different cell sets cannot be scheduled by the same DCI, and the cell in the plurality of cells is either the first cell or the second cell. The receiving unit receives the PDSCH in at least two cells, and / or the transmitting unit transmits the PUSCH in at least two cells. The DCI includes a second information field, the second information field is used to indicate a cell set from the at least one cell set, The DCI further includes a first information field or a fourth information field, the first information field being used to indicate a cell scheduled by the DCI in the cell set indicated by the second information field, the fourth information field including a first field and a second field, the first field and the second field each corresponding to a cell in the cell set indicated by the second information field, and the device wherein if the value of the first field or the second field is a second value, the cell corresponding to the first field or the second field is not scheduled, and otherwise the cell corresponding to the first field or the second field is scheduled.

2. The apparatus according to claim 1, wherein the plurality of cells include all or some cells in a primary cell group, a secondary cell group, or the same PUCCH group.

3. The apparatus according to claim 1, wherein the plurality of cells include cells that can be scheduled by the first cell or cells that can be scheduled by the DCI.

4. The apparatus according to claim 1, wherein the DCI is used to schedule the plurality of cells simultaneously.

5. The apparatus according to claim 1, wherein the fourth information field includes a frequency domain resource allocation field.

6. The apparatus according to claim 1, wherein the receiving unit receives first configuration information, and the first configuration information includes information indicating the plurality of cells, and / or information on at least one set of cells, and / or information on combinations of cells from the plurality of cells that can be scheduled by the same DCI.

7. The apparatus according to claim 6, further comprising a processing unit that determines a cell or cell set corresponding to the value of an information field or the value of a part of an information field in the DCI based on the first configuration information.

8. The apparatus according to claim 6, wherein the first configuration information includes cell configuration information of the first cell, the cell configuration information of the first cell includes first instruction information, and the first instruction 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 a cell among the plurality of cells.

9. The apparatus according to claim 6, 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, the cell configuration information of the first cell and / or configuration information of the primary cell group or the secondary cell group includes second instruction information, and the second instruction information is used to indicate the values ​​of the first information fields and / or one or more values ​​of the second information fields corresponding to the plurality of cells.

10. A data transmission and reception device applicable to a network device, including a transmitting unit and / or a receiving unit, The transmitting unit transmits downlink control information (DCI) in the first cell, the DCI is used to schedule PDSCH and / or PUSCH in at least two of the plurality of cells, the plurality of cells comprises at least one cell set, cells in different cell sets cannot be scheduled by the same DCI, and the cell in the plurality of cells is either the first cell or the second cell. The transmitting unit transmits the PDSCH in at least two cells, and / or the receiving unit receives the PUSCH in at least two cells. The DCI includes a second information field, the second information field is used to indicate a cell set from the at least one cell set, The DCI further includes a first information field or a fourth information field, the first information field being used to indicate a cell scheduled by the DCI in the cell set indicated by the second information field, the fourth information field including a first field and a second field, the first field and the second field each corresponding to a cell in the cell set indicated by the second information field, and the device wherein if the value of the first field or the second field is a second value, the cell corresponding to the first field or the second field is not scheduled, and otherwise the cell corresponding to the first field or the second field is scheduled.

11. A communication system including terminal equipment and network equipment, The network device transmits downlink control information (DCI) in a first cell, the DCI is used to schedule PDSCH and / or PUSCH in at least two of the plurality of cells, the plurality of cells comprises at least one cell set, cells in different cell sets cannot be scheduled by the same DCI, and the cell in the plurality of cells is either the first cell or the second cell. The terminal device receives the PDSCH transmitted by the network device in at least two cells, and / or transmits the PUSCH to the network device in at least two cells. The DCI includes a second information field, the second information field is used to indicate a cell set from the at least one cell set, A communication system wherein the DCI further includes a first information field or a fourth information field, the first information field is used to indicate a cell scheduled by the DCI in the cell set indicated by the second information field, the fourth information field includes a first field and a second field, the first field and the second field each corresponding to a cell in the cell set indicated by the second information field, and if the value of the first field or the second field is a second value, the cell corresponding to the first field or the second field is not scheduled, otherwise the cell corresponding to the first field or the second field is scheduled.

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