Data reception and transmission method, data transmission and reception method and device

Abstract

In the embodiments of the present invention, a data receiving and transmitting method, a data transmitting and receiving method and an apparatus are provided, in which a terminal device monitors a first PDCCH candidate for scheduling at least two cells in a first cell, the at least two cells including the first cell and / or at least one second cell; the terminal device receives a PDSCH in the at least two cells; and / or the terminal device transmits a PUSCH in the at least two cells. Thus, the terminal device determines a first PDCCH candidate and receives a DCI for scheduling at least two cells based on the first PDCCH candidate, thereby supporting scheduling of multiple serving cells by one DCI, thereby reducing the burden of the terminal device to monitor DCI, reducing power consumption and complexity, and further supporting scheduling of PDSCH and / or PUSCH in multiple cells once based on the DCI scheduling one cell once, thereby further improving flexibility of scheduling and efficiency of data transmission.

Description

[Technical field]

[0001] The present invention relates to the technical field of communications. [Background technology]

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

[0003] The concept of a control resource set (CORESET) is introduced in NR. CORESET is a time-frequency resource corresponding to a PDCCH monitoring occasion, and a search space (SS) defines a monitoring occasion and a search behavior in the monitoring occasion.

[0004] In one serving cell, one or more BWPs (Bandwidth Parts) can be configured in uplink and downlink, respectively. The CORESET and SS are configured in the downlink BWP (DL BWP), but the configured CORESET and SS are indexed in the entire serving cell. In one BWP, multiple CORESETs and SSs can be configured. Except for the CORESET index being #0, the configuration of one CORESET includes the index of the CORESET. Except for the SS index being #0, the configuration of one SS includes the index of the SS and the index of the CORESET corresponding to the SS. One CORESET can be associated with multiple SSs, i.e., the configurations of different SSs may include the same CORESET index. Based on such configuration, the terminal device can know the combination of CORESET and SS, and can determine the PDCCH configuration.

[0005] In order to transmit one DCI, a network device needs to perform processing such as CRC attachment, channel coding, rate matching, scrambling, and modulation on the DCI payload of the DCI, and then map it to a physical resource corresponding to one PDCCH candidate. Correspondingly, a terminal device receives the DCI by monitoring the PDCCH candidates.

[0006] It should be noted that the introduction of the above background art is intended to clearly and completely explain the technical solutions of the present invention, and to facilitate understanding thereof by those skilled in the art, and these technical solutions are described in the background art of the present invention, and therefore should not be construed as being known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0007] Currently, a carrier (cell) is configured to perform self-scheduling or cross-carrier scheduling by radio resource control signaling. Self-scheduling means that the PDSCH and / or PUSCH in one carrier is scheduled by the DCI transmitted on the carrier, and cross-carrier scheduling means that the PDSCH and / or PUSCH in one carrier (cell) is scheduled by the DCI transmitted on another carrier (cell). Currently, a DCI supports scheduling only one serving cell (once). In order to reduce the DCI monitoring burden on terminal equipment and reduce power consumption and complexity, including the cases of self-scheduling and cross-carrier scheduling, the NR system is expected to support scheduling the PDSCH and / or PUSCH of multiple serving cells by one DCI (i.e., scheduling multiple cells by DCI once).

[0008] However, at present, there is still no specific solution on how to support scheduling of PDSCHs and / or PUSCHs of multiple serving cells by one DCI (e.g., how to configure and determine PDCCH candidates for transmitting / receiving the DCI, etc.).

[0009] In view of at least one of the above problems, the embodiments of the present invention provide a data receiving and transmitting method, a data transmitting and receiving method and an apparatus, in which a terminal device determines a first PDCCH candidate, and receives DCI for scheduling at least two cells according to the first PDCCH candidate, thereby supporting scheduling of multiple serving cells by one DCI, thereby reducing the burden of DCI monitoring on the terminal device, reducing power consumption and complexity, and further supporting scheduling of PDSCH and / or PUSCH in multiple cells once based on DCI scheduling one cell once, thereby further improving scheduling flexibility and data transmission efficiency. [Means for solving the problem]

[0010] According to one aspect of an embodiment of the present invention, a data receiving and transmitting device is provided, which is applied to a terminal device, and the device includes: a monitoring unit for monitoring first PDCCH candidates for scheduling at least two cells in a first cell, the at least two cells including the first cell and / or at least one second cell; a receiving unit for receiving a PDSCH in the at least two cells; and / or A transmitting unit for transmitting a PUSCH in the at least two cells.

[0011] According to one aspect of an embodiment of the present invention, a data transmitting and receiving device is provided, which is applied to a network device, and the device includes: a first transmitting unit for transmitting a first DCI on a first PDCCH candidate of a first cell, the first PDCCH candidate being used for scheduling at least two cells, the at least two cells including the first cell and / or at least one second cell; a second transmitting unit for transmitting a PDSCH in the at least two cells; and / or A receiving unit for receiving a PUSCH in the at least two cells.

[0012] According to one aspect of an embodiment of the present invention, a data receiving and transmitting method is provided and applied to a terminal device, the method comprising: The terminal device monitors a first PDCCH candidate for scheduling at least two cells in a first cell, the at least two cells including the first cell and / or at least one second cell; The terminal device receives a PDSCH in the at least two cells; and / or The terminal device transmits a PUSCH in the at least two cells.

[0013] According to one aspect of an embodiment of the present invention, a data transmission and reception method is provided, which is applied to a network device, the method comprising: The network device transmits a first DCI on a first PDCCH candidate of a first cell, the first PDCCH candidate being used for scheduling at least two cells, the at least two cells including the first cell and / or at least one second cell; The network equipment transmits a PDSCH in the at least two cells; and / or The network device receives a PUSCH in the at least two cells. Effect of the Invention

[0014] The advantageous effects of the embodiments of the present invention are at least as follows:

[0015] As a result, the terminal device determines a first PDCCH candidate and receives DCI for scheduling at least two cells based on the first PDCCH candidate, thereby supporting scheduling of multiple serving cells using one DCI, thereby reducing the burden on the terminal device to monitor DCI and reducing power consumption and complexity; and further supporting scheduling of PDSCH and / or PUSCH in multiple cells once based on DCI scheduling one cell once, thereby further improving scheduling flexibility and data transmission efficiency.

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Referring now to the following description and drawings, particular embodiments of the present invention will now be described in detail, showing how the principles of the present invention may be employed, but which are not limited in scope to these, and which may include various changes, modifications, and alternatives within the scope of the appended claims.

[0017] Additionally, features described and / or illustrated in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in the other embodiments, or may be substituted for features in the other embodiments.

[0018] It should be noted that terms such as "comprise / have" when used in this specification refer to the presence of a feature, element, step, or assembly, but do not exclude the presence or addition of one or more other features, elements, steps, or assemblies. [Brief description of the drawings]

[0019] Elements and features described in one drawing or one implementation of an embodiment of the invention may be combined with elements and features shown in one or more other drawings or implementations, and in the drawings, like reference numerals are used to indicate corresponding parts in several drawings and to indicate corresponding parts used in several implementations. [Figure 1] FIG. 1 illustrates a communication system according to an embodiment of the present invention. [Figure 2A] FIG. 2 is a diagram showing a CORESET in an embodiment of the present invention. [Figure 2B] FIG. 1 is a diagram showing PDCCH monitoring occasions in an embodiment of the present invention. [Diagram 3] A diagram showing CCE configuration of a serving cell in an embodiment of the present invention. [Figure 4] FIG. 2 illustrates a data receiving and transmitting method according to an embodiment of the present invention. [Diagram 5] A diagram showing CCEs of PDCCH candidates of a cell in an embodiment of the present invention. [Figure 6A] 13 is another diagram showing CCEs of PDCCH candidates of a cell in an embodiment of the present invention. FIG. [Figure 6B] 13 is another diagram showing CCEs of PDCCH candidates of a cell in an embodiment of the present invention. FIG. [Figure 7A] 13 is another diagram showing CCEs of PDCCH candidates of a cell in an embodiment of the present invention. FIG. [Figure 7B] 13 is another diagram showing CCEs of PDCCH candidates of a cell in an embodiment of the present invention. FIG. [Figure 8A] A diagram showing CCEs of PDCCH candidates of a cell group in an embodiment of the present invention. [Figure 8B] 13 is another diagram showing CCEs of PDCCH candidates of a cell group in an embodiment of the present invention. FIG. [Figure 8C] 13 is another diagram showing CCEs of PDCCH candidates of a cell group in an embodiment of the present invention. FIG. [Figure 9A] 13 is another diagram showing CCEs of PDCCH candidates of a cell group in an embodiment of the present invention. FIG. [Figure 9B] 13 is another diagram showing CCEs of PDCCH candidates of a cell group in an embodiment of the present invention. FIG. [Figure 10A] 13 is another diagram showing CCEs of PDCCH candidates of a cell group in an embodiment of the present invention. FIG. [Figure 10B] 13 is another diagram showing CCEs of PDCCH candidates of a cell group in an embodiment of the present invention. FIG. [Figure 11A]A diagram showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention. [Figure 11B] 13 is another diagram showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention. FIG. [Figure 11C] 13 is another diagram showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention. FIG. [Figure 12A] 13 is another diagram showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention. FIG. [Figure 12B] 13 is another diagram showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention. FIG. [Figure 13A] 13 is another diagram showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention. FIG. [Figure 13B] 13 is another diagram showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention. FIG. [Figure 14] 1 is a diagram showing CCEs of PDCCH candidates of a combined cell in an embodiment of the present invention. [Figure 15] FIG. 2 illustrates a data transmission and reception method according to an embodiment of the present invention. [Figure 16] FIG. 2 illustrates a data receiving and transmitting device according to an embodiment of the present invention. [Figure 17] FIG. 2 illustrates a data transmitting and receiving device according to an embodiment of the present invention. [Figure 18] FIG. 1 illustrates a network device according to an embodiment of the present invention. [Figure 19] FIG. 2 is a diagram illustrating a terminal device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The above and other features of the present invention will become apparent from the following detailed description and drawings, in which: While the specification and drawings set forth certain embodiments of the present invention, they are illustrative of only some of the embodiments which may employ the principles of the present invention, and it is to be understood that the present invention is not limited to the described embodiments, but rather includes all modifications, variations and alternatives within the scope of the appended claims.

[0021] In an embodiment of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0022] Additionally, communications between devices in the communications system may be performed according to any stage of communications protocol, including, but not limited to, the following communications protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, 5G, New Radio (NR), and / or other conventional or future developed communications protocols.

[0023] In the embodiment of the present invention, the term "network equipment" refers to an apparatus that connects a terminal equipment to a communication network and provides services to the terminal equipment in a communication system, for example. The network equipment may include, but is not limited to, the following: a "node" and / or a "donor" in the IAB architecture, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a network gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0024] Among them, the base station may include, but is not limited to, the following: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may further include RRH (Remote Radio Head), RRU (Remote Radio Unit), relay, or low power node (e.g., femto, pico, etc.). In addition, the term "base station" may include some or all of the functions thereof, and each base station can provide communication coverage for a specific geographical area. For example, a 5G base station gNB may include one gNB CU and one or more gNB DUs, in which the CU / DU is a logical node of the gNB that has some functions of the gNB. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0025] In the embodiment of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to a device that accesses a communication network and receives services from the network, for example, through a network device. The user equipment may be fixed or mobile, and may also be called a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, etc. For example, a terminal equipment served by an IAB node or an IAB donor under the IAB architecture.

[0026] Among these, user equipment may include, but is not limited to, the following: a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a mobile device, a machine type communication device, a laptop computer, a cordless telephone, a smartphone, a smart watch, a digital camera, etc.

[0027] Furthermore, in a scenario such as the Internet of Things (IoT), the user equipment may also be a monitoring or measuring device or apparatus, including, but not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0028] In addition, the term "network side" or "network equipment side" refers to the network side, which may be a base station or may include one or more network equipment as described above. The term "user side" or "terminal side" or "terminal equipment side" refers to the user or terminal side, which may be a UE or may include one or more terminal equipment as described above. Herein, unless otherwise specified, "equipment" may refer to network equipment or may refer to terminal equipment.

[0029] In the following description, unless confusion is caused, the term "uplink control signal" is interchangeable with "uplink control information (UCI)" or "Physical Uplink Control Channel (PUCCH)", the term "uplink data signal" is interchangeable with "uplink data information" or "Physical Uplink Shared Channel (PUSCH)", "cell" is interchangeable with "carrier", "serving cell", and "carrier component", the term "downlink control signal" is interchangeable with "downlink control information (DCI)" or "Physical Downlink Control Channel (PDCCH)", the term "downlink data signal" is interchangeable with "downlink data information" or "Physical Downlink Shared Channel (PDSCH)", and DCI is interchangeable with DCI format.

[0030] In addition, the transmission or reception of a PUSCH may be understood as the transmission or reception of uplink data carried by the PUSCH, the transmission or reception of a PUCCH may be understood as the transmission or reception of uplink information (e.g., UCI) carried by the PUCCH, the transmission or reception of a PRACH may be understood as the transmission or reception of a preamble carried by the PRACH, the transmission or reception of a PDSCH may be understood as the transmission or reception of downlink data carried by the PDSCH, and the transmission or reception of a PDCCH may be understood as the transmission or reception of downlink information (e.g., DCI) carried by the PDCCH.

[0031] In an embodiment of the present invention, the higher layer signaling may be, for example, Radio Resource Control (RRC) signaling, and the RRC signaling may include, for example, an RRC message, including, for example, a Main Information Block (MIB), system information, and a dedicated RRC message, or an RRC information element (RRC IE), or an information area (field) included in the RRC message or the RRC information element (or an information area included in the information area). The higher layer signaling may be, for example, further Medium Access Control (MAC) signaling, or may be referred to as a MAC control element (MAC CE). However, the present invention is not limited thereto.

[0032] The following describes an embodiment scenario of the present invention through an example, but the present invention is not limited thereto.

[0033] Fig. 1 is a diagram showing a communication system in an embodiment of the present invention, and an example of a terminal device and a network device will be described. As shown in Fig. 1, a communication system 100 may include a network device 101 and terminal devices 102 and 103. For convenience, Fig. 1 shows an example of only two terminal devices and one network device, but the embodiment of the present invention is not limited thereto.

[0034] In an embodiment of the present invention, existing services (traffic) or services that can be implemented in the future can be transmitted between the network device 101 and the terminal devices 102 and 103. For example, these services may include, but are not limited to, eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communication), URLLC (Ultra-Reliable and Low-Latency Communication), and related communications of terminal devices with reduced capabilities.

[0035] Note that in FIG. 1, it is shown that the two terminal devices 102 and 103 are all located within the coverage of the network device 101, but the present invention is not limited thereto. The two terminal devices 102 and 103 do not have to be all located within the coverage of the network device 101, or one terminal device 102 may be within the coverage of the network device 101, and the other terminal device 103 may be outside the coverage of the network device 101.

[0036] The PDCCH candidates are determined based on the CORESET configuration and the SS configuration.

[0037] Hereinafter, the CORESET configuration and the SS configuration, and the method for determining the PDCCH candidates will be exemplarily described.

[0038] <Regarding the CORESET configuration> The configuration of CORESETs other than CORESET #0 may include at least the following information fields, that is, controlResourceSetId: Indicates the index of the CORESET, frequencyDomainResources: Indicates the resources in the frequency domain of the CORESET, duration: The CORESET duration, for example, indicates continuous symbol data, cce-REG-MappingType: indicates the manner in which CCEs are mapped to REGs, for example, whether interleaved mapping or non-interleaved mapping is adopted; and precoderGranularity: indicates the mapping method of DMRS in PDCCH. For example, "precoderGranularity" indicates that if allContiguousRBs, the DMRS associated with the corresponding PDCCH is broadband mapped, i.e., the DMRS associated with the PDCCH occupies all REGs in the CORESET; otherwise, the DMRS associated with the corresponding PDCCH is narrowband mapped, i.e., the DMRS associated with the PDCCH occupies only the REGs occupied by the PDCCH.

[0039] In addition, other related information areas in the setting of CORESETs other than CORESET#0 can be referred to the prior art, and the present invention does not limit this.

[0040] Figure 2A is a diagram showing a CORESET in an embodiment of the present invention. A unit (element) (Control Channel Element, CCE) allocated to a PDCCH channel resource is a basic unit constituting a PDCCH. In NR, one CCE occupies six REGs, and each REG corresponds to 12 resource elements (Resource Element, RE) in a physical resource block (Resource Block, RB). Among them, one REG has nine PDCCH data REs and three DRMS ​​REs, so that REG0 and REG1 shown in Figure 2 have 18 PDCCH data REs and six DRMS ​​REs. In addition, the mapping between CCEs and REGs can adopt methods such as interleaved mapping and non-interleaved mapping. For the specific mapping method, refer to the prior art, and the present invention does not limit it.

[0041] In addition, the number of CCEs in PDCCH is referred to as the aggregation level or aggregation degree (AL). When specifically transmitting PDCCH, the network device 101 can determine which aggregation level to adopt for transmitting control information based on the actual radio channel environment. For example, when the radio channel environment is relatively poor, a relatively large aggregation degree can be adopted to obtain relatively good demodulation performance. When the radio channel environment is relatively good, a relatively small aggregation degree can also be adopted.

[0042] As shown in FIG. 2A, for example, the related parameters in the CORESET configuration are

[0043]

Number

[0044] <Regarding SS settings> The settings of SSs other than SS#0 may include at least the following information fields, that is, searchSpaceId: Indicates the index of the SS, monitoringSlotPeriodicityAndOffset: Indicates the PDCCH monitoring period (unit: slot) and the offset from the monitoring period to the slot where the search space is actually detected, controlResourceSetId: Indicates the index of the CORESET corresponding to the SS, duration: indicates the number of consecutive PDCCH monitoring slots in one PDCCH monitoring period, and a PDCCH monitoring slot refers to a slot in which a PDCCH candidate needs to be monitored; monitoringSymbolsWithinSlot: indicates the start symbol of a PDCCH monitoring opportunity in one PDCCH monitoring slot. For example, there are 14 bits in total, of which the highest bit represents the first symbol, and the others can be inferred based on this. nrofCandidates: indicates the number of PDCCH candidates, for example, indicates the number of corresponding PDCCH candidates for different ALs; and searchSpaceType: indicates the type of search space, for example, common search space (CSS) or UE-specific search space (USS).

[0045] FIG. 2B is a diagram showing a PDCCH monitoring occasion in an embodiment of the present invention.

[0046] As shown in FIG. 2B, it is assumed that: The CORESET corresponding to the controlResourceSetId contains two symbols, Periodicity: 4 slots, Duration: 2 slots, and monitoringSymbolsWithinSlot:10001000100000 It is.

[0047] The terminal device can determine a PDCCH monitoring occasion.

[0048] In addition, other related information fields in the setting of SS other than SS#0 can be referred to the prior art, and the present invention is not limited thereto.

[0049] For one search space configuration and its associated CORESET configuration, the terminal device can determine which time-frequency domain resource to monitor the PDCCH. In order to reduce the complexity of the UE blindly detecting the PDCCH, the search space configuration is further provided with configuration information for setting the number of PDCCH candidates, so that the UE can determine multiple PDCCH candidates corresponding to one or multiple aggregation classes and CCEs corresponding to each PDCCH candidate when blindly detecting the PDCCH / DCI in one PDCCH monitoring occasion of one search space.

[0050] For example, the active DL BWP and slots of the serving cell f with subcarrier spacing μ

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[0067] In the prior art, one serving cell can schedule two serving cells, but one DCI can only schedule one serving cell. For example,

[0068]

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[0069] Table 1 shows the number of PDCCH candidates in each AL of each serving cell.

[0070] [Table 1] The above-mentioned method is designed for the case where one DCI can only schedule one cell, and a corresponding PDCCH candidate set is set and determined for each serving cell, and the PDCCH candidate in the corresponding set can transmit / receive DCI for scheduling the PDSCH / PUSCH of each serving cell.

[0071] In order to reduce the DCI monitoring burden of terminal equipment and reduce power consumption and complexity, the NR system is expected to support scheduling of PDSCHs and / or PUSCHs of multiple serving cells by one DCI, but at present, there is still no method for configuring and determining PDCCH candidates to support scheduling of PDSCHs and / or PUSCHs of multiple serving cells by one DCI.

[0072] Therefore, when one serving cell schedules at least two serving cells simultaneously, how to determine PDCCH candidates for the at least two serving cells is a problem that needs to be solved.

[0073] The following description will be given in conjunction with examples.

[0074] <Example of the first aspect> In the embodiment of the present invention, a method for receiving and transmitting data is provided, which will be described from the terminal device side.

[0075] FIG. 4 is a diagram showing a data receiving and transmitting method in an embodiment of the present invention. As shown in FIG. 4, the method includes:

[0076] 401: A terminal device monitors a first PDCCH candidate for scheduling at least two cells in a first cell, the at least two cells including the first cell and / or at least one second cell; 402: The terminal device receives a PDSCH in the at least two cells; and / or 403: The terminal device transmits a PUSCH in the at least two cells.

[0077] Thus, the terminal device monitors a first PDCCH candidate for scheduling at least two cells in a first cell, the at least two cells including the first cell and / or at least one second cell, and can receive PDSCH and / or transmit PUSCH in the at least two cells. Thus, the terminal device determines a first PDCCH candidate and receives DCI for scheduling at least two cells according to the first PDCCH candidate, thereby supporting scheduling of multiple serving cells by one DCI, thereby reducing the burden of DCI monitoring on the terminal device, reducing power consumption and complexity, and further supporting scheduling of PDSCH and / or PUSCH in multiple cells once based on DCI scheduling one cell once, thereby further improving flexibility of scheduling and efficiency of data transmission.

[0078] In some embodiments, the first PDCCH candidate is for transmission of a first DCI, where the first DCI is used to schedule two or more cells simultaneously, e.g., the first DCI schedules a first cell and at least one second cell simultaneously, or the first DCI schedules at least two second cells simultaneously.

[0079] In some embodiments, the first DCI is only used to schedule two or more cells simultaneously (i.e., once), or the first DCI may be used to schedule two or more cells simultaneously (i.e., once), or may be used to schedule only one cell (at one time).

[0080] In some embodiments, the first DCI is, but is not limited to, DCI format 0_1 / 1_1, or DCI format 0_2 / 1_2, or other DCI format.

[0081] In some embodiments, the terminal device receives a first DCI in a first cell, the first cell can schedule a PDSCH and / or a PUSCH in a second cell, the first cell can be referred to as a scheduling cell, the second cell can be referred to as a scheduled cell, or the first cell can self-schedule its own PDSCH and / or PUSCH, and the first cell can be a primary cell or a secondary cell, for example, the first cell is a primary cell and the at least one second cell includes a secondary cell, or the first cell is a secondary cell and the at least one second cell includes a primary cell and / or a secondary cell, but the embodiments of the present invention are not limited thereto.

[0082] In some embodiments, the first cell scheduling the first or second cell may be referred to as the first cell scheduling the PDSCH and / or PUSCH in the first or second cell, or the first DCI received in the first cell scheduling the PDSCH and / or PUSCH in the first or second cell. The first DCI scheduling the cell may be referred to as the first DCI scheduling the PDSCH and / or PUSCH in the cell. The DCI for scheduling the PDSCH may be referred to as a downlink assignment (DL assignment), and the DCI for scheduling the PUSCH may be referred to as an uplink grant (UL grant).

[0083] The following describes how the terminal device receives cell configuration information of the primary cell and / or at least one secondary cell.

[0084] In some embodiments, the terminal device receives cell configuration information of a first cell and / or at least one second cell, where different cells each have corresponding cell configuration information, where a cell configuration information includes or does not include first indication information for configuring a search space, and / or the cell configuration information includes or does not include second indication information for configuring PDCCH candidates, and / or the cell configuration information includes or does not include third indication information for configuring a search space indicator (ID / identifier).

[0085] For example, the first indication information includes the SS setting, the second indication information includes "nofcandidate" information in the SS setting, and the third indication information is "searchSpaceId" in the SS setting. In some embodiments, the cell setting information of one of the at least one second cells does not include the first indication information, does not include the second indication information, or includes the third indication information and / or the second indication information. Here, only one second cell is taken as an example, but the present invention is not limited to only one second cell.

[0086] For example, the configuration information of the second cell does not include the first indication information and the second indication information, but includes the third indication information, for example, the third indication information is for indicating the index of one or more search spaces. The index corresponds to the search space set with the same index in the first cell configuration information. These search spaces are used to schedule the second cell. Other search spaces are not used to schedule the second cell. The search space indexes indicated by the third indication information of the configuration information of different second cells are the same or different. Thus, different search spaces in the first cell can be used to schedule different cells respectively. Optionally, the above search spaces are all USS. That is, it is supported that different USSs schedule different cells respectively.

[0087] In some embodiments, when the cell configuration information of the first cell and / or at least one second cell includes the second indication information, the PDCCH candidates configured in each cell are the same. For example, the second indication information of the first cell and the second indication information of the second cell indicate the same number of PDCCH candidates for each AL. However, the embodiment of the present invention is not limited thereto, and for example, the PDCCH candidates configured in each cell may be different.

[0088] The PDCCH candidates will be described below as examples.

[0089] In some embodiments, the terminal device determines a set of PDCCH candidates included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located.

[0090] In some embodiments, the first search space is a terminal device-specific search space or a common search space.

[0091] For example, a CORESET corresponding to a first search space in which a first PDCCH candidate is located can be determined according to the above-mentioned correspondence manner between search spaces and CORESETs, and the PDCCH candidates in the PDCCH candidate set can be used to schedule at least two cells and / or schedule one cell.

[0092] In some embodiments, each PDCCH candidate in a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located is used to schedule at least two cells, and the first PDCCH candidate is any one of them.

[0093] In some embodiments, the first PDCCH candidate is a PDCCH candidate in a common portion of PDCCH candidates corresponding to each of the at least two cells. In some embodiments, the first PDCCH candidate is a PDCCH candidate corresponding to one of the at least two cells.

[0094] For example, the first DCI is transmitted on one PDCCH candidate (i.e., the first PDCCH candidate) in the PDCCH candidate set included in the (corresponding) CORESET of the first search space where the first PDCCH candidate is located. The meaning of the first DCI is as described above. In some implementations, the PDCCH candidate set included in the (corresponding) CORESET of the first search space where the first PDCCH candidate is located includes a first PDCCH candidate set and a second PDCCH candidate set, the PDCCH candidate in the first PDCCH candidate set is used to schedule the at least two cells, and the PDCCH candidate in the second PDCCH candidate set is used to schedule at least one cell, and the at least one cell and the at least two cells include or do not include the same cell. The first PDCCH candidate is any one in the first PDCCH candidate set.

[0095] In some implementations, the first PDCCH candidate set and the second PDCCH candidate set may or may not include PDCCH candidates with the same CCE, that is, the first PDCCH candidate set and the second PDCCH candidate set may or may not overlap.

[0096] In some implementations, the CCE of any one PDCCH candidate in the first PDCCH candidate set is not the CCE of any one PDCCH candidate in the second PDCCH candidate set, i.e., the first PDCCH candidate set and the second PDCCH candidate set do not overlap.

[0097] In some implementations, the second PDCCH candidate is for transmitting the first DCI or the second DCI. The meaning of the first DCI is as described above. The second DCI is used to schedule only one cell, i.e., the second DCI schedules only one cell (once).

[0098] In some embodiments, the second DCI is, but is not limited to, DCI format 0_0 / 1_0, or DCI format 0_1 / 1_1, or DCI format 0_2 / 1_2, or another DCI format.

[0099] In some embodiments, the DCI formats of the first DCI and the second DCI are the same or different. For example, when the first DCI and the second DCI are both DCI format 0_1 / 1_1, the DCI format may be used to schedule two or more cells simultaneously (i.e., once), or may be used to schedule only one cell (once), and when the DCI format is employed to schedule at least two cells simultaneously, the corresponding DCI (regarded as the first DCI) is transmitted on the above-mentioned first PDCCH candidate, and when the DCI format is employed to schedule only one cell, the corresponding DCI (regarded as the second DCI) is transmitted on the above-mentioned second PDCCH candidate.

[0100] In some embodiments, determining the PDCCH candidate set included in the (corresponding) CORESET of the first search space includes determining the PDCCH candidate set based on the first parameter and / or the second parameter, or the CCEs of the PDCCH candidates in the PDCCH candidate set included in the (corresponding) CORESET of the first search space are associated with the first parameter and / or the second parameter. Determining the PDCC candidate set includes the terminal device determining the CCEs of the first PDCCH candidate.

[0101] The setting of the first parameter and / or the second parameter will be described below.

[0102] In some embodiments, values ​​for the first parameter and / or the second parameter are determined based on a predefined or preconfigured value of a carrier indication or a value of a parameter for a cell that indicates scheduling, or are predefined or preconfigured.

[0103] Take the first parameter as an example. For example, the first parameter is

[0104]

number

[0105]

number

[0106]

number

[0107]

number

[0108]

number

[0109]

number

[0110] The second parameter will be described later, and the method for determining the second parameter may be similar to, the same as, or different from the method for determining the first parameter, but the present invention is not limited thereto.

[0111] In some embodiments, for a cell, a reference cell, and a cell set, PDCCH candidates can be obtained based on the first parameter and formula (1), and in some embodiments, different cells correspond to different first parameters, in some embodiments, different cell sets correspond to different first parameters, or different cells (e.g., cells in the same cell set) may correspond to the same first parameter. For example, the first parameter is

[0112]

number

[0113] In some implementations, for a cell, a reference cell and a cell pair, a PDCCH candidate may be obtained based on the first parameter, the second parameter and the following formula (2):

[0114]

number

[0115]

number

[0116]

number

[0117] In some implementations, the first parameter corresponds to a reference cell and the second parameter corresponds to at least one cell that is not related to the reference cell. For example,

[0118]

number

[0119]

number

[0120]

number

[0121]

number

[0122] In some implementations, the first parameter corresponds to an index of the set of cells and the second parameter corresponds to at least one cell within the set of cells, or vice versa. For example,

[0123]

number

[0124]

number

[0125] In some implementations, the first parameter corresponds to one serving cell and the second parameter corresponds to one or more other serving cells. For example,

[0126]

number

[0127]

number

[0128]

number

[0129]

number

[0130] In some implementations, the first parameter corresponds to a case where one serving cell is scheduled, and the second parameter corresponds to a case where multiple serving cells are scheduled. For example, when multiple serving cells are not scheduled,

[0131]

number

[0132]

number

[0133] In some implementations, when scheduling multiple serving cells is not configured, PDCCH candidates are determined according to the first parameter and formula (1), and when scheduling multiple serving cells is configured, PDCCH candidates are determined according to the second parameter and formula (3).

[0134]

number

[0135]

number

[0136] The method for determining the first PDCCH candidate and the second PDCCH candidate will be described below by taking an example.

[0137] For example, when the first cell can simultaneously schedule four cells, it can simultaneously schedule, for example, cell0-cell3. However, when the first cell transmits the first DCI, it does not necessarily schedule four cells in reality. In other words, although the scheduling capability of the first cell described above is four cells, when transmitting a specific first DCI, the number of cells scheduled does not have to be four, and optionally, the first cell can schedule only one serving cell, for example, transmit the first DCI or the second DCI, or can schedule multiple serving cells, for example, transmit the first DCI.

[0138] The determination of the first PDCCH candidate and the second PDCCH candidate of a cell will be described below.

[0139] FIG. 5 is a diagram showing CCEs of PDCCH candidates of a cell in an embodiment of the present invention.

[0140] Taking four serving cells as an example, the number of PDCCH candidates set in each AL of each serving cell is as shown in Table 2.

[0141] Table 2 shows the number of PDCCH candidates in each AL of each serving cell.

[0142] [Table 2] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each serving cell.

[0143] Taking AL=2 as an example, the CCEs of the PDCCH candidates of each serving cell are as shown in Figure 5, among which the PDCCH candidates of Cell0-Cell4 are as shown in Figure 5, and the PDCCH candidate of the common part of the PDCCH candidates corresponding to each Cell0-Cell4 is the first PDCCH candidate. For example, since the PDCCH candidate consisting of CCE2-CCE3 is a PDCCH candidate that can simultaneously schedule Cell0 and Cell1 (Cell0&Cell1), the PDCCH candidate consisting of CCE2-CCE3 may be called the first PDCCH candidate. Note that a comprehensive listing of other methods for determining the first PDCCH candidate is omitted here.

[0144] In some implementations, a PDCCH candidate that has no overlap with the PDCCH candidates corresponding to each cell is determined as a second PDCCH candidate. For example, a PDCCH candidate consisting of CCE0-CCE1 is a PDCCH candidate that schedules only Cell0, i.e., a second PDCCH candidate.

[0145] In some implementations, the set of each first PDCCH candidate is a first PDCCH candidate set, and the set of each second PDCCH candidate is a second PDCCH candidate set.

[0146] In some implementations, as shown in FIG. 5, the first PDCCH candidate set and the second PDCCH candidate set do not include PDCCH candidates with the same CCE, i.e., the CCE of any PDCCH candidate in the first PDCCH candidate set is not the CCE of any PDCCH candidate in the second PDCCH candidate set.

[0147] 6A and 6B are other diagrams showing CCEs of PDCCH candidates of a cell in an embodiment of the present invention.

[0148] Still taking four serving cells as an example, the number of PDCCH candidates set in each AL of each serving cell is as shown in Table 3. Table 3 shows the number of PDCCH candidates in each AL of each serving cell.

[0149] [Table 3] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each serving cell.

[0150] Taking AL=2 as an example, the CCEs of the PDCCH candidates of each serving cell are as shown in Figures 6A and 6B.

[0151] In some implementations, as shown in Figure 6A, the PDCCH candidates of Cell0-Cell4 are as shown in Figure 6A, and the PDCCH candidate of the common part of the PDCCH candidates corresponding to each Cell0-Cell4 is the first PDCCH candidate. For example, the PDCCH candidate consisting of CCE0-CCE1 is the PDCCH candidate of Cell0 and Cell2, which can be the PDCCH candidate for simultaneously scheduling Cell0 and Cell2 (Cell0&Cell2); similarly, the PDCCH candidate consisting of CCE2-CCE3 is the PDCCH candidate for simultaneously scheduling Cell1 and Cell3 (Cell1&Cell3), and others are derived based on this.

[0152] Optionally, a PDCCH candidate that simultaneously schedules Cell0 and Cell2 (Cell0&Cell2) can be a first PDCCH candidate, and a PDCCH candidate that simultaneously schedules Cell1 and Cell3 (Cell1&Cell3) can be a second PDCCH candidate, and the first PDCCH candidate set and the second PDCCH candidate set do not include PDCCH candidates with the same CCE, i.e., the CCE of any one PDCCH candidate in the first PDCCH candidate set is not the CCE of any one PDCCH candidate in the second PDCCH candidate set.

[0153] Optionally, in some implementations, as shown in Figure 6B, the PDCCH candidates of Cell0-Cell4 are as shown in Figure 6B, and the PDCCH candidate of the common part of the PDCCH candidates corresponding to each Cell0-Cell4 is the first PDCCH candidate. For example, for a PDCCH candidate consisting of CCE0-CCE1, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell2 (single cell) alone, or schedules Cell0 and Cell2 (Cell0&Cell2) simultaneously. For example, the PDCCH candidate that schedules Cell0 and Cell2 (Cell0&Cell2) simultaneously can still be the first PDCCH candidate, and the PDCCH candidate that schedules Cell1 and Cell3 (Cell1&Cell3) simultaneously can still be the second PDCCH candidate.

[0154] 7A and 7B are other diagrams showing CCEs of PDCCH candidates of a cell in an embodiment of the present invention.

[0155] Still taking four serving cells as an example, the number of PDCCH candidates set in each AL of each serving cell is as shown in Table 4. Table 4 shows the number of PDCCH candidates in each AL of each serving cell.

[0156] [Table 4] Note that a description of the same content as in the above-mentioned embodiment method will be omitted here.

[0157] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each serving cell.

[0158] Taking AL=2 as an example, the CCEs of the PDCCH candidates of each serving cell are as shown in Figures 7A and 7B.

[0159] In some implementations, as shown in Figure 7A, each PDCCH candidate in the PDCCH candidate set included in the (corresponding) CORESET of the first search space in which the first PDCCH candidate is located is used to schedule at least two cells. The PDCCH candidate of the common part of the PDCCH candidates corresponding to each Cell0-Cell4 is the first PDCCH candidate, for example, the PDCCH candidate of Cell0-Cell3 is the same, for example, the PDCCH candidate consisting of CCE0-CCE1 is the PDCCH candidate of Cell0-Cell3. Furthermore, as shown in Figure 7A, the PDCCH candidate consisting of CCE0-CCE1 is the PDCCH candidate that simultaneously schedules Cell0-Cell3 (Cell0&Cell1&Cell2&Cell3), that is, the first PDCCH candidate.

[0160] Optionally, in some implementations, as shown in FIG. 7B, one PDCCH candidate can be a PDCCH candidate that schedules one serving cell alone and a PDCCH candidate that schedules multiple serving cells simultaneously. For example, for a PDCCH candidate consisting of CCE0-CCE1, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell2 (single cell) alone, or schedules Cell3 (single cell) alone, or schedules Cell0-Cell3 (Cell0&Cell1&Cell2&Cell3) simultaneously.

[0161] This allows the terminal device to determine the first PDCCH candidate and / or the second PDCCH candidate of the serving cell.

[0162] In some implementations, Cells belonging to the same cell group or PUCCH group are the same cell set; All cells scheduled by the same scheduling cell are in the same cell set; Cells that can be scheduled by the same DCI / PDCCH are the same cell set; Cells that can be scheduled by the same DCI / PDCCH are the same cell set; Cells for which index values ​​of the same cell set are predefined and / or set are the same cell set; Cells for which the same CIF value is predefined and / or configured are in the same cell set; and Cells in which corresponding PDCCH candidates have overlap are the same cell set.

[0163] For example, when the first cell can simultaneously schedule four cells, it can simultaneously schedule, for example, cell0-cell3. For example, when no grouping is performed, the cell0-cell3 belong to the same cell group or PUCCH group, and the cell0-cell3 can be considered as one group, that is, no additional grouping is required, and optionally, the cell0-cell3 can be further divided into cell groups, for example, when the index value 0 of the same cell group is predefined and / or configured for cell0 and cell1, and the index value 1 of the same cell group is predefined and / or configured for cell2 and cell3, cell0 and cell1 belong to Group0, and cell2 and cell3 belong to Group1. Note that a comprehensive list of other cell group divisions is omitted.

[0164] In some implementations, the first cell does not necessarily schedule four cells when it transmits the first DCI. In other words, although the scheduling capability of the first cell is four cells as described above, the number of cells scheduled when it transmits the specific first DCI does not need to be four. Optionally, the first cell may schedule only one serving cell, for example, when it transmits the second DCI, or may schedule multiple serving cells. For example, when it transmits the first DCI and the first cell schedules multiple serving cells, it may simultaneously schedule multiple serving cells of the same cell group, or may schedule multiple serving cells between different cell groups.

[0165] When a first cell transmits a specific first DCI, a combination of cells it may schedule is called a combination cell. For example, if the cells the first DCI schedules at a specific time are cell0, cell1, and cell2, the combination cell is a combination of cell0 to cell2, and if the cells the first DCI schedules at a specific time are cell0 and cell1, the combination cell is a combination of cell0 to cell1. When a first cell transmits a specific first DCI or second DCI, it may only schedule a single cell, and such a cell is called a single cell. For example, if the cell the second DCI schedules at a specific time is cell0, this cell may be called a single cell.

[0166] The determination of the first PDCCH candidate and the second PDCCH candidate of a cell group will be described below with an example.

[0167] 8A to 8C are diagrams illustrating CCEs of PDCCH candidates of a cell group in an embodiment of the present invention.

[0168] Taking the settings in Table 5 as an example, Table 5 shows the number of PDCCH candidates in each AL of each cell group.

[0169] [Table 5] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each set of cells.

[0170] Taking AL=2 as an example, the CCEs of the PDCCH candidates of each cell pair are as shown in Figures 8A to 8C.

[0171] In some implementations, as shown in Figure 8A, a PDCCH candidate corresponding to Group 0 may be a first PDCCH candidate, and a PDCCH candidate corresponding to Group 1 may be a second PDCCH candidate. For example, Cell 0 and Cell 1 (Cell 0 & Cell 1) are scheduled simultaneously by the first PDCCH candidate, and Cell 2 and Cell 3 (Cell 2 & Cell 3) are scheduled simultaneously by the second PDCCH candidate, and the first PDCCH candidate set and the second PDCCH candidate set may include PDCCH candidates with the same CCE, for example, PDCCH candidates consisting of CCE6-CCE8, that is, the first PDCCH candidate set and the second PDCCH candidate set include PDCCH candidates with the same CCE.

[0172] In some implementations, as shown in FIG. 8B, a PDCCH candidate can be a PDCCH candidate for independently scheduling one serving cell and a PDCCH candidate for simultaneously scheduling multiple serving cells, and cross-set scheduling can be performed for different serving cells. For example, for a PDCCH candidate corresponding to CCE0-CCE1, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell0 and Cell1 (Cell0&Cell1) simultaneously; for a PDCCH candidate corresponding to CCE6-CCE7, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell2 (single cell) alone, or schedules Cell3 (single cell) alone, or schedules Cell0 and Cell1 and Cell2 and Cell3 (Cell0&Cell1&Cell2&Cell3) simultaneously. In addition, a PDCCH candidate that overlaps Group 0 and Group 1, for example, a PDCCH candidate that corresponds to CCE6-CCE7, may be considered to be a first PDCCH candidate, and a PDCCH candidate that does not overlap Group 0 and Group 1, for example, a PDCCH candidate that corresponds to CCE28-CCE29, may be considered to be a second PDCCH candidate, and vice versa.

[0173] In some implementations, as shown in Figure 8C, one PDCCH candidate can be a PDCCH candidate that schedules one serving cell alone and a PDCCH candidate that schedules multiple serving cells simultaneously, and cannot perform cross-set scheduling for different serving cells. For example, for a PDCCH candidate that corresponds to CCE6-CCE7, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell2 (single cell) alone, or schedules Cell3 (single cell) alone, or schedules Cell0 and Cell1 (Cell0&Cell1) simultaneously, or schedules Cell2 and Cell3 (Cell2&Cell3) simultaneously. Note that here, the same parts as in Figure 8B will not be described repeatedly.

[0174] 9A and 9B are other diagrams illustrating CCEs of PDCCH candidates of a cell group according to an embodiment of the present invention.

[0175] For example, cell0 and cell2 belong to cell set 0, and the index value of the cell set is 0, and cell1 and cell3 belong to cell set 1, and the index value of the cell set is 1. Note that here, a duplicated description of the same parts as in the above-mentioned embodiment will be omitted.

[0176] Taking the settings in Table 6 as an example, Table 6 shows the number of PDCCH candidates in each AL of each cell group.

[0177] [Table 6] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each set of cells.

[0178] Taking AL=2 as an example, the CCEs of the PDCCH candidates of each cell group are as shown in FIGS. 9A-9B.

[0179] In some implementations, as shown in Figure 9A, a PDCCH candidate corresponding to Group 0 can be a first PDCCH candidate, and a PDCCH candidate corresponding to Group 1 can be a second PDCCH candidate. Since there is no overlapping PDCCH candidate between group 0 and group 1, cells in group 0 and group 1 cannot be scheduled simultaneously, for example, Cell 0 and Cell 2 (Cell 0 & Cell 2) are scheduled simultaneously by the first PDCCH candidate, and Cell 1 and Cell 3 (Cell 1 & Cell 3) are scheduled simultaneously by the second PDCCH candidate. In addition, the first PDCCH candidate set and the second PDCCH candidate set do not include PDCCH candidates with the same CCE, that is, the first PDCCH candidate set and the second PDCCH candidate set do not include PDCCH candidates with the same CCE.

[0180] In some implementations, as shown in Figure 9B, a PDCCH candidate corresponding to Group 0 may be a first PDCCH candidate, and a PDCCH candidate corresponding to Group 1 may be a second PDCCH candidate. Also, one PDCCH candidate may be a PDCCH candidate for scheduling one serving cell alone and a PDCCH candidate for simultaneously scheduling multiple serving cells, for example, for a PDCCH candidate corresponding to CCE0-CCE1, it may be a PDCCH candidate for scheduling Cell0 (single cell) alone, or for scheduling Cell2 (single cell) alone, or for simultaneously scheduling Cell0 and Cell2 (Cell0&Cell2).

[0181] 10A and 10B are other diagrams illustrating CCEs of PDCCH candidates of a cell group in an embodiment of the present invention.

[0182] Still taking four serving cells as an example, the number of PDCCH candidates set in each AL of each serving cell is as shown in Table 7. Table 7 shows the number of PDCCH candidates in each AL of a cell group.

[0183] [Table 7] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each set of cells.

[0184] Among them, cell0-cell3 belong to the same group. Taking AL=2 as an example, the CCEs of the PDCCH candidates of the cell group are as shown in FIG. 10A-FIG. 10B.

[0185] In some implementations, as shown in Figure 10A, each PDCCH candidate in the PDCCH candidate set included in the (corresponding) CORESET of the first search space where the first PDCCH candidate is located is used to schedule at least two cells. For example, the PDCCH candidate of the common part of the PDCCH candidates corresponding to Group (Cell0-Cell4) is the first PDCCH candidate, for example, the PDCCH candidate consisting of CCE0-CCE1 is the PDCCH candidate of Group (Cell0-Cell4), and further, as shown in Figure 10A, the PDCCH candidate consisting of CCE0-CCE1 is the PDCCH candidate that simultaneously schedules Cell0-Cell4 (Cell0&Cell1&Cell2&Cell3), that is, the first PDCCH candidate.

[0186] Optionally, in some implementations, as shown in FIG. 10B, one PDCCH candidate can be a PDCCH candidate that schedules one serving cell alone and a PDCCH candidate that schedules multiple serving cells simultaneously. For example, for a PDCCH candidate consisting of CCE0-CCE1, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell2 (single cell) alone, or schedules Cell3 (single cell) alone, or schedules Cell0-Cell3 (Cell0&Cell1&Cell2&Cell3) simultaneously.

[0187] Thus, the terminal device can determine the first PDCCH candidate and / or the second PDCCH candidate of the cell group.

[0188] In some implementations, a PDCCH candidate corresponding to a third cell of the at least two cells is a first PDCCH candidate, for example, the third cell may be referred to as a reference cell, and the other cells may be referred to as associated cells.

[0189] In some implementations, the reference cells have a corresponding first parameter predefined and / or preconfigured.

[0190] In some implementations, a cell is not a reference cell if it is scheduled based solely on associations with other serving cells.

[0191] In some implementations, the multiple cells that may be scheduled simultaneously may include only one reference cell, or may include multiple reference cells.

[0192] Hereinafter, the determination of the first PDCCH candidate and the second PDCCH candidate of the reference cell will be described by way of example.

[0193] 11A to 11C are diagrams illustrating CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention.

[0194] For example, in a predefined or configured manner, cell1 may be associated with cell0, and cell0 may be the reference cell of cell1 or may be called reference cell0, and similarly, cell2 may be associated with cell3, and cell2 may be the reference cell of cell3 or may be called reference cell1. Note that here, the same parts as those in the above-mentioned implementation manner will not be described again.

[0195] Taking the settings in Table 8 as an example, Table 8 shows the number of PDCCH candidates in each AL of each reference cell.

[0196] [Table 8] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each reference cell.

[0197] Taking AL=2 as an example, the CCEs of the PDCCH candidates of the reference cell are as shown in Figures 11A-11C.

[0198] In some implementations, as shown in Figure 11A, a PDCCH candidate corresponding to Cell0 (reference cell of Cell2) can be a first PDCCH candidate, and a PDCCH candidate corresponding to Cell1 (reference cell of Cell3) can be a second PDCCH candidate. For example, Cell0 and Cell1 (Cell0&Cell1) are scheduled simultaneously by the first PDCCH candidate, and Cell2 and Cell3 (Cell2&Cell3) are scheduled simultaneously by the second PDCCH candidate, and the first PDCCH candidate set and the second PDCCH candidate set may include PDCCH candidates with the same CCE, for example, PDCCH candidates consisting of CCE6-CCE8, that is, the first PDCCH candidate set and the second PDCCH candidate set include PDCCH candidates with the same CCE.

[0199] In some implementations, as shown in FIG. 11B, a PDCCH candidate can be a PDCCH candidate for scheduling one serving cell alone and a PDCCH candidate for scheduling multiple serving cells simultaneously, and can schedule different serving cells across reference cells. For example, for a PDCCH candidate consisting of CCE0-CCE1, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell0 and Cell1 (Cell0&Cell1) simultaneously; for a PDCCH candidate consisting of CCE6-CCE7, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell2 (single cell) alone, or schedules Cell3 (single cell) alone, or schedules Cell0 and Cell1 and Cell2 and Cell3 (Cell0&Cell1&Cell2&Cell3) simultaneously. In addition, the PDCCH candidate in the common part between Cell0 (reference cell of Cell2) and Cell1 (reference cell of Cell3) may be considered as the first PDCCH candidate, and the non-overlapping PDCCH candidate between Cell0 (reference cell of Cell2) and Cell1 (reference cell of Cell3) may be considered as the second PDCCH candidate, and vice versa.

[0200] In some implementations, as shown in Figure 11C, one PDCCH candidate can be a PDCCH candidate that schedules one serving cell alone and a PDCCH candidate that schedules multiple serving cells simultaneously, and cannot schedule different serving cells across reference cells. For example, for a PDCCH candidate that corresponds to CCE6-CCE7, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell2 (single cell) alone, or schedules Cell3 (single cell) alone, or schedules Cell0 and Cell1 (Cell0&Cell1) simultaneously, or schedules Cell2 and Cell3 (Cell2&Cell3) simultaneously. Note that here, the same parts as in Figure 11B will not be described again.

[0201] 12A and 12B are other diagrams showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention.

[0202] For example, in a predefined or configured manner, cell2 may be associated with cell0, and cell0 may be the reference cell of cell2 or may be called reference cell0, and similarly, cell3 may be associated with cell1, and cell1 may be the reference cell of cell3 or may be called reference cell1. Note that here, the same description as in the above-mentioned implementation manner will be omitted.

[0203] Taking the settings in Table 9 as an example, Table 9 shows the number of PDCCH candidates in each AL of each reference cell.

[0204] [Table 9] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each reference cell.

[0205] Taking AL=2 as an example, the CCEs of the PDCCH candidates of each cell group are as shown in FIGS. 12A-12B.

[0206] In some implementations, as shown in Figure 12A, the PDCCH candidate corresponding to Cell0 can be the first PDCCH candidate, and the PDCCH candidate corresponding to Cell1 can be the second PDCCH candidate. Since there is no overlapping PDCCH candidate between Cell0 and Cell1, the cells associated with Cell0 and Cell1 cannot be scheduled simultaneously, for example, Cell0 and Cell2 (Cell0&Cell2) are scheduled simultaneously by the first PDCCH candidate, and Cell1 and Cell3 (Cell1&Cell3) are scheduled simultaneously by the second PDCCH candidate. In addition, the first PDCCH candidate set and the second PDCCH candidate set do not include PDCCH candidates with the same CCE, i.e., the first PDCCH candidate set and the second PDCCH candidate set do not include PDCCH candidates with the same CCE.

[0207] In some implementations, as shown in Figure 12B, the PDCCH candidate corresponding to Cell0 can be the first PDCCH candidate, and the PDCCH candidate corresponding to Cell1 can be the second PDCCH candidate. Also, one PDCCH candidate can be a PDCCH candidate for scheduling one serving cell alone and a PDCCH candidate for simultaneously scheduling multiple serving cells, for example, for a PDCCH candidate corresponding to CCE0-CCE1, it can be a PDCCH candidate for scheduling Cell0 (single cell) alone, or for scheduling Cell2 (single cell) alone, or for simultaneously scheduling Cell0 and Cell2 (Cell0&Cell2).

[0208] 13A and 13B are other diagrams showing CCEs of PDCCH candidates of a reference cell in an embodiment of the present invention.

[0209] Still taking four serving cells as an example, the number of PDCCH candidates set in each AL of each serving cell is as shown in Table 10. Table 10 shows the number of PDCCH candidates in each AL of each reference cell.

[0210] [Table 10] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each reference cell.

[0211] Among them, cell0-cell3 are associated with the same reference cell Cell0. Taking AL=2 as an example, the CCEs of the PDCCH candidates of the reference cell Cell0 are as shown in Figures 13A and 13B.

[0212] In some implementations, as shown in Figure 13A, each PDCCH candidate in the PDCCH candidate set included in the (corresponding) CORESET of the first search space in which the first PDCCH candidate is located is used to schedule at least two cells. For example, the PDCCH candidates of Cell0 (associated with Cell0-Cell3) are all PDCCH candidates consisting of Cell0-Cell3. Furthermore, as shown in Figure 13A, the PDCCH candidate consisting of CCE0-CCE1 is a PDCCH candidate that simultaneously schedules Cell0-Cell4 (Cell0&Cell1&Cell2&Cell3), that is, the first PDCCH candidate.

[0213] Optionally, in some implementations, as shown in FIG. 13B, one PDCCH candidate can be a PDCCH candidate that schedules one serving cell alone and a PDCCH candidate that schedules multiple serving cells simultaneously. For example, for a PDCCH candidate consisting of CCE0-CCE1, it can be a PDCCH candidate that schedules Cell0 (single cell) alone, or schedules Cell1 (single cell) alone, or schedules Cell2 (single cell) alone, or schedules Cell3 (single cell) alone, or schedules Cell0-Cell4 (Cell0&Cell1&Cell2&Cell3) simultaneously.

[0214] This allows the terminal device to determine the first PDCCH candidate and / or the second PDCCH candidate of the reference cell.

[0215] In some implementations, the first PDCCH candidate is a PDCCH candidate corresponding to a combination cell.

[0216] For example, in a case where there are four serving cells, it is predefined that cell0 and cell1 are independently scheduled cells, cell0 and cell1 are combined cells, i.e., combination1, and cell2 and cell3 are combined cells, i.e., combination2. Different first parameters are set for the independently scheduled cells and the combined cells.

[0217] FIG. 14 is a diagram showing CCEs of PDCCH candidates of combined cells in an embodiment of the present invention.

[0218] Taking the settings in Table 11 as an example, Table 11 shows the number of PDCCH candidates in each AL of each combined cell.

[0219] [Table 11] In some implementations, the first PDCCH candidate and / or the second PDCCH candidate are determined based on PDCCH candidates in different ALs of each combined cell.

[0220] As shown in FIG. 14, for example, for AL=2, PDCCH candidates of Cell0-Cell1, Combination0, and Combination1 are as shown in FIG.

[0221] Taking AL=2 as an example, the CCEs of the PDCCH candidates of each serving cell and combined cell are as shown in Figure 14, among which, the PDCCH candidate of the common part of the PDCCH candidates corresponding to each cell and combined cell is the first PDCCH candidate, for example, the PDCCH candidate consisting of CCE2-CCE3 is a PDCCH candidate that can simultaneously schedule Cell0 and Cell1 (Cell0&Cell1). Therefore, the PDCCH candidate consisting of CE2-CCE3 may be called the first PDCCH candidate. Note that a comprehensive list of other methods for determining the first PDCCH candidate is omitted.

[0222] In some implementations, a PDCCH candidate that has no overlapping portion among the PDCCH candidates corresponding to each cell and the combined cell is a second PDCCH candidate. For example, a PDCCH candidate consisting of CCE0-CCE1 is a PDCCH candidate that schedules only Cell0, i.e., a second PDCCH candidate.

[0223] In some implementations, the set of each first PDCCH candidate is a first PDCCH candidate set, and the set of each second PDCCH candidate is a second PDCCH candidate set.

[0224] In some implementations, as shown in FIG. 14, the first PDCCH candidate set and the second PDCCH candidate set do not include PDCCH candidates with the same CCE, i.e., the CCE of any PDCCH candidate in the first PDCCH candidate set is not the CCE of any PDCCH candidate in the second PDCCH candidate set.

[0225] As a result, the terminal device can obtain the first PDCCH candidate and / or the second PDCCH candidate, and search for the first DCI in the first PDCCH candidate, or search for the first DCI or the second DCI in the second PDCCH candidate, thereby further reducing the burden on the terminal device of monitoring DCI, and further reducing power consumption and complexity.

[0226] In some implementations, the method of determining the CCEs of the PDCCH candidates of the cell, cell group and reference cell may be determined based on the above-mentioned first parameter and / or second parameter and the above-mentioned formulas (1)-(3), but the present invention does not provide an exhaustive listing thereof.

[0227] In some implementations, the terminal device monitors a third PDCCH candidate in a second search space of the first cell.

[0228] In some implementations, the second search space is used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell, and the at least one cell does not include one of the at least two cells.

[0229] In some implementations, the second search space is used for scheduling only one cell, which may be the first cell or the second cell.

[0230] In some implementations, the first search space or the second search space is a UE-specific search space (USS) or a common search space (CSS).

[0231] In some implementations, the method of determining the PDCCH candidate set included in the (corresponding) CORESET of the second search space can refer to the above-mentioned first search space or the prior art, but the embodiments of the present invention are not limited to this. For example, when the second search space is used to schedule only one cell, the prior art can be referenced, and when the second search space is used to schedule at least one cell, the method of the above-mentioned first search space can be referenced.

[0232] It should be noted that the above-mentioned Figures 6 to 14 are for illustrative purposes only and the present invention is not limited thereto. For example, the execution order of each operation may be appropriately adjusted, or some operations may be added or removed. In addition, those skilled in the art may make appropriate modifications based on the above-mentioned contents without being limited to the description of the above-mentioned Figures 6 to 14.

[0233] As can be seen from the above embodiment, the terminal device determines a first PDCCH candidate and receives DCI for scheduling at least two cells based on the first PDCCH candidate, thereby supporting scheduling of multiple serving cells by one DCI, thereby reducing the burden on the terminal device of monitoring DCI and reducing power consumption and complexity; and further supporting scheduling of PDSCH and / or PUSCH in multiple cells once based on DCI scheduling one cell once, thereby further improving scheduling flexibility and data transmission efficiency.

[0234] <Example of the second aspect> In the embodiment of the present invention, a data transmission and reception method is provided, and will be described from the perspective of a network device, and the description of the parts that overlap with the embodiment of the first aspect will be omitted.

[0235] FIG. 15 is a diagram showing a data transmitting and receiving method in an embodiment of the present invention. As shown in FIG. 15, the method includes:

[0236] 1501: A network device transmits a first DCI on a first PDCCH candidate of a first cell, the first PDCCH candidate being used for scheduling at least two cells, the at least two cells including the first cell and / or at least one second cell; 1502: The network device transmits a PDSCH in the at least two cells; and 1503: The network device receives a PUSCH in the at least two cells.

[0237] In some embodiments, the first cell is a scheduling cell and the second cell is a scheduled cell.

[0238] In some embodiments, the first cell is a primary cell and the at least one second cell includes a secondary cell, or the first cell is a secondary cell and the at least one second cell includes a primary cell and / or a secondary cell.

[0239] In some embodiments, the network device transmits cell configuration information of the first cell and / or at least one second cell, the cell configuration information including or not including first instruction information for configuring a search space, and / or the cell configuration information including or not including second instruction information for configuring a PDCCH candidate, and / or the cell configuration information including or not including third instruction information for configuring a search space indicator.

[0240] In some embodiments, the cell configuration information of one of the at least one second cell does not include the first indication information, or does not include the second indication information, or includes the third indication information and / or the second indication information.

[0241] In some embodiments, when the cell configuration information of the first cell and / or the at least one second cell respectively includes the second indication information, the PDCCH candidates configured in each cell are the same.

[0242] In some embodiments, the first PDCCH candidate is for transmission of a first DCI, which is used for scheduling two or more cells simultaneously.

[0243] In some embodiments, each PDCCH candidate in a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located is used for scheduling the at least two cells.

[0244] In some embodiments, the PDCCH candidate set included in the (corresponding) CORESET of the first search space in which the first PDCCH candidate is located includes a first PDCCH candidate set and a second PDCCH candidate set, the PDCCH candidates in the first PDCCH candidate set are used to schedule the at least two cells, and the PDCCH candidates in the second PDCCH candidate set are used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell.

[0245] In some embodiments, the second PDCCH candidate is for transmission of the first DCI or a second DCI, where the second DCI is used for scheduling only the one cell.

[0246] It should be noted that the above-mentioned FIG. 15 is for illustrative purposes only, but the present invention is not limited thereto. For example, the execution order between the operations can be appropriately adjusted, or some operations can be added or removed. In addition, those skilled in the art can make appropriate modifications based on the above-mentioned contents without being limited to the description of the above-mentioned FIG. 15.

[0247] As can be seen from the above embodiment, the terminal device determines a first PDCCH candidate and receives DCI for scheduling at least two cells based on the first PDCCH candidate, thereby supporting scheduling of multiple serving cells by one DCI, thereby reducing the burden on the terminal device of monitoring DCI and reducing power consumption and complexity; and further supporting scheduling of PDSCH and / or PUSCH in multiple cells once based on DCI scheduling one cell once, thereby further improving scheduling flexibility and data transmission efficiency.

[0248] <Example of the third aspect> In an embodiment of the present invention, a data receiving and transmitting device is provided, which may be, for example, a terminal device, or one or more components or assemblies arranged in the terminal device. Note that, in this embodiment, the same content as in the embodiment of the first aspect will not be described.

[0249] FIG. 16 is a diagram showing a data receiving and transmitting device 1600 in an embodiment of the present invention. As shown in FIG. 16, the device includes:

[0250] A monitoring unit 1601: monitors a first PDCCH candidate for scheduling at least two cells in a first cell, where the at least two cells include the first cell and / or at least one second cell; A receiving unit 1602 for receiving a PDSCH in the at least two cells; and / or A sending unit 1603: Sends a PUSCH in the at least two cells.

[0251] In some embodiments, the first cell is a scheduling cell and the second cell is a scheduled cell.

[0252] In some embodiments, the first cell is a primary cell and the at least one second cell includes a secondary cell, or the first cell is a secondary cell and the at least one second cell includes a primary cell and / or a secondary cell.

[0253] In some embodiments, the data receiving and transmitting device 1600 further includes a determining unit 1604, which determines a CCE of the first PDCCH candidate.

[0254] In some embodiments, the receiving unit 1602 further receives cell configuration information of the first cell and / or at least one second cell, the cell configuration information including or not including first indication information for configuring a search space, and / or the cell configuration information including or not including second indication information for configuring a PDCCH candidate, and / or the cell configuration information including or not including third indication information for configuring a search space indicator.

[0255] In some embodiments, the cell configuration information of one of the at least one second cell does not include the first indication information, or does not include the second indication information, or includes the third indication information and / or the second indication information.

[0256] In some embodiments, when the cell configuration information of the first cell and / or the at least one second cell respectively includes the second indication information, the PDCCH candidates configured in each cell are the same.

[0257] In some embodiments, the first PDCCH candidate is for transmission of a first DCI, where the first DCI is used for scheduling two or more cells simultaneously.

[0258] In some embodiments, the determining unit 1604 further determines a PDCCH candidate set included in a (corresponding) CORESET of the first search space in which the first PDCCH candidate is located.

[0259] In some embodiments, each PDCCH candidate in the PDCCH candidate set included in the (corresponding) CORESET of the first search space in which the first PDCCH candidate is located is used for scheduling at least two cells.

[0260] In some embodiments, the PDCCH candidate set included in the (corresponding) CORESET of the first search space in which the first PDCCH candidate is located includes a first PDCCH candidate set and a second PDCCH candidate set, the PDCCH candidates in the first PDCCH candidate set are used to schedule at least two cells, and the PDCCH candidates in the second PDCCH candidate set are used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell.

[0261] In some embodiments, the first PDCCH candidate set and the second PDCCH candidate set may or may not include PDCCH candidates with the same CCE.

[0262] In some embodiments, the CCE of any one of the PDCCH candidates in the first PDCCH candidate set is not a CCE of any one of the PDCCH candidates in the second PDCCH candidate set.

[0263] In some embodiments, the monitoring unit 1601 monitors a third PDCCH candidate in a second search space of the first cell.

[0264] In some embodiments, the second search space is used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell, and the at least one cell does not include one of the at least two cells.

[0265] In some embodiments, the second search space is used for scheduling only one cell, which may be the first cell or the second cell.

[0266] In some embodiments, the second PDCCH candidate is used to transmit the first DCI or the second DCI, and the second DCI is used for scheduling only the one cell.

[0267] In some embodiments, the first search space or the second search space is a terminal device-specific search space or a common search space.

[0268] In some embodiments, the first search space is used for scheduling two or more cells, the two or more cells including the at least two cells used for scheduling the first PDCCH candidate.

[0269] The implementation of the device in FIG. 16 can be referred to in the embodiment of the first aspect, and a detailed description thereof will be omitted here.

[0270] The above-mentioned embodiments are used to exemplarily explain the embodiments of the present invention, but the present invention is not limited thereto, and further, appropriate modifications can be made based on the above-mentioned embodiments. For example, each of the above-mentioned embodiments may be used alone, or a plurality of the above-mentioned embodiments may be used in combination.

[0271] Although the components or modules according to the present invention have been described above, the present invention is not limited to these. The data receiving and receiving device 1600 may further include other components or modules, and the specific contents of these components or modules can be found in the related art.

[0272] For convenience, the connection relationships or signal directions between each component or module are shown in Fig. 16, but various related technologies such as bus connection may be adopted as understood by those skilled in the art. Each of the above-mentioned components or modules may be realized by hardware such as a processor, a memory, a transmitter (device), and a receiver (device), but the implementation of the present invention is not limited thereto.

[0273] As can be seen from the above embodiment, the terminal device determines a first PDCCH candidate and receives DCI for scheduling at least two cells based on the first PDCCH candidate, thereby supporting scheduling of multiple serving cells by one DCI, thereby reducing the burden on the terminal device of monitoring DCI and reducing power consumption and complexity; and further supporting scheduling of PDSCH and / or PUSCH in multiple cells once based on DCI scheduling one cell once, thereby further improving scheduling flexibility and data transmission efficiency.

[0274] <Example of the fourth aspect> In an embodiment of the present invention, a data transmitting and receiving device is provided, which may be, for example, a network device, or one or more components or assemblies arranged in the network device. Note that the same content as in the embodiment of the fourth aspect is omitted here.

[0275] FIG. 17 is an example diagram of a data transmitting and receiving device 1700. As shown in FIG.

[0276] A first transmitting unit 1701: transmits a first DCI on a first PDCCH candidate of a first cell, where the first PDCCH candidate is used for scheduling at least two cells, where the at least two cells include the first cell and / or at least one second cell; A second transmitting unit 1702: for transmitting a PDSCH in the at least two cells; and / or A receiving unit 1703: Receives PUSCH in the at least two cells.

[0277] In some embodiments, the first PDCCH candidate is for transmission of a first DCI, which is used for scheduling two or more cells simultaneously.

[0278] In some embodiments, the first cell is a scheduling cell and the second cell is a scheduled cell.

[0279] In some embodiments, the first cell is a primary cell and the at least one second cell includes a secondary cell, or the first cell is a secondary cell and the at least one second cell includes a primary cell and / or a secondary cell.

[0280] In some embodiments, the data transmitting and receiving device 1700 further includes a third transmitting unit 1704, which transmits cell configuration information of the first cell and / or at least one second cell, where the cell configuration information includes or does not include first indication information for configuring a search space, and / or the cell configuration information includes or does not include second indication information for configuring a PDCCH candidate, and / or the cell configuration information includes or does not include third indication information for configuring a search space indicator.

[0281] In some embodiments, the cell configuration information of one of the at least one second cell does not include the first indication information, or does not include the second indication information, or includes the third indication information and / or the second indication information.

[0282] In some embodiments, when the cell configuration information of the first cell and / or the at least one second cell respectively includes the second indication information, the PDCCH candidates configured in each cell are the same.

[0283] In some embodiments, the first PDCCH candidate is for transmission of a first DCI, which is used for scheduling two or more cells simultaneously.

[0284] In some embodiments, each PDCCH candidate in a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located is used for scheduling the at least two cells.

[0285] In some embodiments, the PDCCH candidate set included in the (corresponding) CORESET of the first search space in which the first PDCCH candidate is located includes a first PDCCH candidate set and a second PDCCH candidate set, the PDCCH candidates in the first PDCCH candidate set are used to schedule the at least two cells, and the PDCCH candidates in the second PDCCH candidate set are used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell.

[0286] In some embodiments, the second PDCCH candidate is used to transmit the first DCI or the second DCI, and the second DCI is used to schedule only the one cell.

[0287] Although the above-mentioned embodiments are illustrative of the present invention, the present invention is not limited to these, and furthermore, appropriate modifications can be made based on the above-mentioned embodiments. For example, the above-mentioned embodiments can be used alone, or a combination of the above-mentioned embodiments can be used.

[0288] Although the components or modules according to the present invention have been described above, the present invention is not limited thereto. The data transmitting and receiving device 1700 may further include other components or modules, and the specific contents of these components or modules can be found in the related art.

[0289] For convenience, the connection relationships or signal directions between each component or module are shown in Fig. 17, but various related technologies such as bus connection may be adopted as understood by those skilled in the art. Each of the above-mentioned components or modules may be realized by hardware such as a processor, a memory, a transmitter (device), and a receiver (device), but the implementation of the present invention is not limited thereto.

[0290] As can be seen from the above embodiment, the terminal device determines a first PDCCH candidate and receives DCI for scheduling at least two cells based on the first PDCCH candidate, thereby supporting scheduling of multiple serving cells by one DCI, thereby reducing the burden on the terminal device of monitoring DCI and reducing power consumption and complexity; and further supporting scheduling of PDSCH and / or PUSCH in multiple cells once based on DCI scheduling one cell once, thereby further improving scheduling flexibility and data transmission efficiency.

[0291] <Example of the fifth aspect> An embodiment of the present invention further provides a communication system, which can be seen from FIG. 1, in which the same contents as those of the embodiments of the first to fourth aspects are omitted.

[0292] In some embodiments, the communication system 100 includes at least a terminal device 102 and / or a network device 101 .

[0293] In some embodiments, the implementation of the terminal device 102 may refer to the terminal device 1900 below, and the implementation of the network device 101 may refer to the network device 1800 below.

[0294] In the embodiment of the present invention, a network device is further provided, which is, for example, a base station, but the present invention is not limited thereto and may also be other network devices.

[0295] Fig. 18 is a diagram showing the configuration of a network device in an embodiment of the present invention. As shown in Fig. 18, the network device 1800 may include a processor 1810 (e.g., a central processing unit CPU) and a memory 1820, and the memory 1820 is connected to the processor 1810. The memory 1820 can store various data and can also store a program 1830 for information processing, and can execute the program 1830 under the control of the processor 1810.

[0296] For example, the processor 1810 may be configured to execute a program to implement the data receiving and transmitting method described in the embodiments of the second aspect.

[0297] As shown in Fig. 18, the network device 1800 may further include a transceiver 1840, an antenna 1850, etc., and the functions of these components are similar to those of the prior art, so detailed descriptions thereof will be omitted here. It is not necessary for the network device 1800 to include all the components shown in Fig. 18. The network device 1800 may further include components not shown in Fig. 18, but the prior art can be referred to for this information.

[0298] In the embodiment of the present invention, a terminal device is further provided, but the present invention is not limited thereto and may be other devices.

[0299] Fig. 19 is a diagram illustrating a terminal device according to an embodiment of the present invention. As shown in Fig. 19, the terminal device 1900 may include a processor 1910 and a memory 1920, where the memory 1920 stores data and programs and is connected to the processor 1910. It should be noted that this figure is merely an example, and other types of configurations may be used to supplement or replace the configurations to realize telecommunication functions or other functions.

[0300] For example, the processor 1910 may be configured to execute a program to implement the data transmission and reception method described in the embodiments of the first aspect.

[0301] As shown in Fig. 19, the terminal device 1900 further includes a communication module 1930, an input unit 1940, a display 1950, a power supply 1960, etc. The functions of these components are similar to those of the prior art, so detailed descriptions thereof will be omitted here. It is not necessary for the terminal device 1900 to include all the components shown in Fig. 19. The terminal device 1900 may further include components not shown in Fig. 19, but the prior art can be referred to for this information.

[0302] An embodiment of the present invention further provides a computer program, which, when executed by a terminal device, causes the terminal device to perform the data receiving and transmitting method described in the embodiment of the first aspect.

[0303] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes a terminal device to perform the data receiving and transmitting method according to the embodiment of the first aspect.

[0304] In a further embodiment of the present invention, a computer program is provided, which, when executed by a network device, causes the network device to perform the data transmitting and receiving method described in the embodiment of the second aspect.

[0305] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes a network device to perform the data transmitting and receiving method according to the embodiment of the second aspect.

[0306] The above-mentioned devices and methods may be realized by software or hardware, or may be realized by a combination of hardware and software. The present invention further relates to a computer-readable program, which, when executed by a logic component, causes the logic component to realize the above-mentioned device or component, or causes the logic component to realize each of the above-mentioned methods or steps. The logic component may be, for example, a Field Programmable Gate Array (FPGA), a microprocessor, a processor for use in a computer, etc. The present invention also relates to a storage medium, such as a hard disk, a magnetic disk, an optical hard disk, a DVD, a flash memory, etc., storing the above-mentioned program.

[0307] Additionally, one or more combinations of the functional blocks depicted in the figures and / or one or more combinations of the functional blocks may be implemented as 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 component, a discrete gate or transistor logic component, a discrete hardware assembly, or any other suitable combination for performing the functions described herein. Also, one or more combinations of the functional blocks depicted in the figures and / or one or more combinations of the functional blocks may be further configured as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other combination.

[0308] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and any modifications to the present invention fall within the technical scope of the present invention as long as they do not depart from the spirit of the present invention.

[0309] In addition, the following additional notes will be added to the above-mentioned embodiments.

[0310] (Appendix 1) A method for receiving and transmitting data, comprising: The method is applied to a terminal device, the method comprising: The terminal device monitors a first PDCCH candidate for scheduling at least two cells in a first cell, the at least two cells including the first cell and / or at least one second cell; and The terminal device receives a PDSCH and / or transmits a PUSCH in the at least two cells.

[0311] (Appendix 2) 2. The method according to claim 1, comprising: The first cell is a scheduling cell and the second cell is a scheduled cell.

[0312] (Appendix 3) The method according to claim 1-2, The first cell is a primary cell and the at least one second cell includes a secondary cell; or the first cell is a secondary cell and the at least one second cell includes a primary cell and / or a secondary cell.

[0313] (Appendix 4) The method according to claim 1-3, The method further comprises: The terminal device determining a CCE of the first PDCCH candidate.

[0314] (Appendix 5) The method according to any one of claims 1 to 4, The method further comprises: The terminal device receives cell configuration information of a first cell and / or at least one second cell; The cell configuration information may or may not include first instruction information for setting a search space, and / or the cell configuration information may or may not include second instruction information for setting a PDCCH candidate, and / or the cell configuration information may or may not include third instruction information for setting a search space indicator.

[0315] (Appendix 6) 6. The method according to claim 5, The cell setting information of one of the at least one second cell does not include the first instruction information, or does not include the second instruction information, or includes the third instruction information and / or the second instruction information.

[0316] (Appendix 7) 6. The method according to claim 5, When the cell setting information of the first cell and / or at least one second cell each includes the second indication information, the PDCCH candidates set in each cell are the same.

[0317] (Appendix 8) The method according to any one of claims 1 to 7, The first PDCCH candidate is for transmitting a first DCI, and the first DCI is used for simultaneously scheduling two or more cells.

[0318] (Appendix 9) 10. The method according to any one of claims 1-8, comprising: The terminal device determines a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located.

[0319] (Appendix 10) 10. The method according to any one of claims 1 to 9, comprising: Each PDCCH candidate in a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located is used to schedule the at least two cells.

[0320] (Appendix 11) 10. The method according to any one of claims 1 to 9, comprising: A PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located includes a first PDCCH candidate set and a second PDCCH candidate set, the PDCCH candidate in the first PDCCH candidate set is used to schedule the at least two cells, and the PDCCH candidate in the second PDCCH candidate set is used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell.

[0321] (Appendix 12) 12. The method according to claim 11, The first PDCCH candidate set and the second PDCCH candidate set may or may not include PDCCH candidates with the same CCE.

[0322] (Appendix 13) 13. The method of claim 12, further comprising: The CCE of any one PDCCH candidate in the first PDCCH candidate set is not the CCE of any one PDCCH candidate in the second PDCCH candidate set.

[0323] (Appendix 14) 14. The method according to any one of claims 1 to 13, comprising: The method further comprises: The terminal device monitors a third PDCCH candidate in a second search space of the first cell; The second search space is used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell, and the at least one cell does not include one of the at least two cells.

[0324] (Appendix 15) 15. The method according to claim 14, The second search space is used for scheduling only one cell, and the one cell is the first cell or the second cell.

[0325] (Appendix 16) 16. The method according to any one of claims 1 to 15, comprising: The second PDCCH candidate is used to transmit a first DCI or a second DCI, and the second DCI is used to schedule only the one cell.

[0326] (Appendix 17) 17. The method according to any one of claims 9 to 16, comprising: The first search space or the second search space is a search space dedicated to the terminal device or a shared search space.

[0327] (Appendix 18) 18. The method according to any one of claims 9 to 17, comprising: The first search space is used for scheduling two or more cells, and the two or more cells include the at least two cells used for scheduling the first PDCCH candidate.

[0328] (Appendix 19) 10. The method according to claim 9, Determining a PDCCH candidate set to be included in a (corresponding) CORESET of a first search space includes determining the PDCCH candidate set based on a first parameter and / or a second parameter.

[0329] (Appendix 20) 10. The method according to claim 9, The CCEs of the PDCCH candidates in the PDCCH candidate set included in the (corresponding) CORESET of the first search space are associated with the first parameter and / or the second parameter.

[0330] (Appendix 21) The method according to claim 19-20, Different cells correspond to different first parameters.

[0331] (Appendix 22) The method according to claim 1-21, The first PDCCH candidate is a PDCCH candidate in a common portion of PDCCH candidates corresponding to each of the at least two cells.

[0332] (Appendix 23) The method according to claim 1-21, The first PDCCH candidate is a PDCCH candidate corresponding to one cell of the at least two cells.

[0333] (Appendix 24) 24. The method according to any one of claims 19 to 23, comprising: The cell is a third cell, and the reference cell has a corresponding first parameter predefined and / or pre-set.

[0334] (Appendix 25) 24. The method of claim 23, The one cell is a third cell.

[0335] (Appendix 26) 20. The method of claim 19, Different cells correspond to the same first parameter.

[0336] (Appendix 27) 27. The method according to claim 26, comprising: The different cells are cells in the same cell set.

[0337] (Appendix 28) 28. The method according to claim 27, The first parameter is an index value of the set of cells.

[0338] (Appendix 29) 20. The method of claim 19, The first parameter corresponds to a third cell, and the second parameter corresponds to at least one cell associated with the third cell.

[0339] (Appendix 30) 20. The method of claim 19, The first parameter corresponds to an index of a set of cells, and the second parameter corresponds to at least one cell in the set of cells.

[0340] (Appendix 31) 12. The method according to claim 11, The CCEs of PDCCH candidates in a PDCCH candidate set included in a (corresponding) CORESET of the first search space are associated with a first parameter, and the CCEs of PDCCH candidates in a PDCCH candidate set included in a (corresponding) CORESET of the second search space are associated with a second parameter.

[0341] (Appendix 32) 32. The method according to any one of claims 19 to 31, comprising: The value of the first parameter and / or the second parameter is determined based on a defined or configured value of a carrier indication or a value of a cell-related parameter that indicates scheduling; or is defined or configured.

[0342] (Appendix 33) A method for transmitting and receiving data, comprising the steps of: The method is applied to a network device, comprising: The network device transmits a first DCI on a first PDCCH candidate of a first cell, the first PDCCH candidate being used for scheduling at least two cells, the at least two cells including the first cell and / or at least one second cell; and The method includes the network equipment transmitting a PDSCH and / or receiving a PUSCH in the at least two cells.

[0343] (Appendix 34) 34. The method of claim 33, The first cell is a scheduling cell and the second cell is a scheduled cell.

[0344] (Appendix 35) 34. The method of claim 33, The first cell is a primary cell and the at least one second cell includes a secondary cell; or the first cell is a secondary cell and the at least one second cell includes a primary cell and / or a secondary cell.

[0345] (Appendix 36) The method according to claim 33-35, The method further comprises: The network device transmits cell configuration information of the first cell and / or at least one second cell; The cell configuration information may or may not include first instruction information for setting a search space, and / or the cell configuration information may or may not include second instruction information for setting a PDCCH candidate, and / or the cell configuration information may or may not include third instruction information for setting a search space indicator.

[0346] (Appendix 37) 37. The method of claim 36, The cell setting information of one of the at least one second cell does not include the first instruction information, or does not include the second instruction information, or includes the third instruction information and / or the second instruction information.

[0347] (Appendix 38) 38. The method according to claim 37, comprising: When the cell setting information of the first cell and / or at least one second cell each includes the second indication information, the PDCCH candidates set in each cell are the same.

[0348] (Appendix 39) The method according to claim 33-38, The first PDCCH candidate is for transmitting a first DCI, and the first DCI is used for simultaneously scheduling two or more cells.

[0349] (Appendix 40) 39. The method according to any one of claims 33-39, comprising: Each PDCCH candidate in a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located is used to schedule the at least two cells.

[0350] (Appendix 41) 39. The method according to any one of claims 33-39, comprising: A PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located includes a first PDCCH candidate set and a second PDCCH candidate set, the PDCCH candidate in the first PDCCH candidate set is used to schedule the at least two cells, and the PDCCH candidate in the second PDCCH candidate set is used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell.

[0351] (Appendix 42) 42. The method of claim 41, The second PDCCH candidate is used to transmit the first DCI or the second DCI, and the second DCI is used to schedule only the one cell.

[0352] (Appendix 43) A terminal device, A memory and a processor are included, The memory stores a computer program, and the processor is configured to execute the computer program to implement the method according to any one of claims 1 to 32.

[0353] (Appendix 44) A network device, A memory and a processor are included, The memory stores a computer program, and the processor is configured to execute the computer program to implement the method according to any one of claims 33 to 43.

[0354] (Appendix 45) 1. A communication system comprising: A network device as set forth in Appendix 43; and / or Including the terminal equipment described in Appendix 44.

Claims

1. A data receiving and transmitting device for use in a terminal device, comprising: a monitoring unit for monitoring first PDCCH candidates for scheduling at least two cells in a first cell, the at least two cells including the first cell and / or at least one second cell; a receiving unit for receiving a PDSCH in the at least two cells; and / or An apparatus comprising: a transmitting unit for transmitting a PUSCH in the at least two cells.

2. 2. The apparatus of claim 1, The first cell is a scheduling cell and the second cell is a scheduled cell.

3. 2. The apparatus of claim 1, the first cell is a primary cell and the at least one second cell includes a secondary cell; or The apparatus, wherein the first cell is a secondary cell, and the at least one second cell includes a primary cell and / or a secondary cell.

4. 2. The apparatus of claim 1, The apparatus further includes a determining unit, which determines a CCE of the first PDCCH candidate.

5. 2. The apparatus of claim 1, The receiving unit further receives cell configuration information of a first cell and / or at least one second cell; The cell configuration information includes or does not include first instruction information for setting a search space, and / or the cell configuration information includes or does not include second instruction information for setting a PDCCH candidate, and / or the cell configuration information includes or does not include third instruction information for setting a search space indicator.

6. 6. The apparatus of claim 5, An apparatus, wherein the cell setting information of one of the at least one second cell does not include the first instruction information, or does not include the second instruction information, or includes the third instruction information and / or the second instruction information.

7. 6. The apparatus of claim 5, When the cell setting information of the first cell and / or at least one second cell each includes the second indication information, the PDCCH candidate set in each cell is the same.

8. 2. The apparatus of claim 1, The first PDCCH candidate is for transmission of a first DCI, the first DCI being used for simultaneously scheduling two or more cells.

9. 2. The apparatus of claim 1, The determining unit further determines a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located.

10. 2. The apparatus of claim 1, An apparatus, wherein each PDCCH candidate in a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located is used to schedule the at least two cells.

11. 2. The apparatus of claim 1, a PDCCH candidate set included in a (corresponding) CORESET of a first search space in which the first PDCCH candidate is located includes a first PDCCH candidate set and a second PDCCH candidate set, the PDCCH candidates in the first PDCCH candidate set are used to schedule the at least two cells, and the PDCCH candidates in the second PDCCH candidate set are used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell.

12. 12. The apparatus of claim 11, The first PDCCH candidate set and the second PDCCH candidate set may or may not include PDCCH candidates having the same CCE.

13. 13. The apparatus of claim 12, A CCE of any one PDCCH candidate in the first PDCCH candidate set is not a CCE of any one PDCCH candidate in the second PDCCH candidate set.

14. 2. The apparatus of claim 1, The monitoring unit monitors a third PDCCH candidate in a second search space of the first cell; The apparatus, wherein the second search space is used to schedule at least one cell, and the at least one cell and the at least two cells may or may not include the same cell, and the at least one cell does not include one of the at least two cells.

15. 15. The apparatus of claim 14, The second search space is used for scheduling only one cell, the one cell being the first cell or the second cell.

16. 16. The apparatus of claim 15, The second PDCCH candidate is used to transmit a first DCI or a second DCI, and the second DCI is used to schedule only the one cell.

17. 15. The apparatus of claim 14, An apparatus, wherein the first search space or the second search space is a search space dedicated to a terminal device or a common search space.

18. 10. The apparatus of claim 9, 22. An apparatus comprising: an apparatus for scheduling a first PDCCH candidate for a first search space including at least two cells for which the first search space is used for scheduling;

19. A device for transmitting and receiving data, which is applied to a network device, a first transmission unit for transmitting a first DCI on a first PDCCH candidate of a first cell, the first PDCCH candidate being used for scheduling at least two cells, the at least two cells including the first cell and / or at least one second cell; a second transmitting unit for transmitting a PDSCH in the at least two cells; and / or An apparatus comprising: a receiving unit for receiving a PUSCH in the at least two cells.

20. 20. The apparatus of claim 19, The first PDCCH candidate is for transmission of a first DCI, the first DCI being used for simultaneously scheduling two or more cells.

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