Wireless communication method and device and non-temporary computer readable program storage medium

Abstract

The invention discloses a wireless communication method, a wireless communication device and a non-transitory computer readable program storage medium. The wireless communication method comprises: receiving, by a user terminal, physical downlink shared channel (PDSCH) configuration information and downlink control information (DCI), the PDSCH configuration information comprising a mapping relationship between a plurality of carrier indication field (CIF) indexes and a plurality of carriers, each CIF index being mapped to at least one carrier, and each CIF index being mapped to at least one carrier; the number of carriers mapped to each CIF index is limited; and determining scheduling information of the PDSCH on a plurality of carriers according to the PDSCH configuration information and the DCI.

Description

[0001] This application is a divisional application of the Chinese patent application with application number "202010067578.4", application date "January 20, 2020", and title "An information scheduling method, device, equipment and storage medium". Technical Field

[0002] The present application relates to communications, and in particular to an information scheduling method, apparatus, device and storage medium. Background Art

[0003] In the existing 5G communication system, one downlink control information (DCI) can only schedule the physical downlink shared channel (PDSCH) on one carrier at a time. If PDSCH is scheduled on multiple carriers, the base station needs to send multiple DCIs, resulting in a high load on the transmission control signaling of the 5G system. Summary of the invention

[0004] The embodiments of the present application provide an information scheduling method, apparatus, device and storage medium, which reduce the load of transmission control signaling of a 5G communication system.

[0005] The embodiment of the present application provides an information scheduling method, which is applied to a first communication node, including:

[0006] Receiving physical downlink shared channel PDSCH configuration information sent by the second communication node;

[0007] Receiving downlink control information DCI sent by the second communication node;

[0008] Scheduling information of the PDSCH on at least one carrier is determined according to the PDSCH configuration information and the DCI.

[0009] The embodiment of the present application provides an information scheduling method, which is applied to a second communication node, including:

[0010] Sending predetermined physical downlink shared channel PDSCH configuration information to the first communication node;

[0011] Determine, according to the PDSCH configuration information, downlink control information DCI for scheduling a PDSCH on at least one carrier;

[0012] The downlink control information is sent to the first communication node.

[0013] The embodiment of the present application provides an information scheduling device, applied to a first communication node, including:

[0014] A first receiving module, configured to receive physical downlink shared channel PDSCH configuration information sent by the second communication node;

[0015] A second receiving module, configured to receive downlink control information DCI sent by the second communication node;

[0016] The first determination module is configured to determine scheduling information of the PDSCH on at least one carrier according to the PDSCH configuration information and the DCI.

[0017] The embodiment of the present application provides an information scheduling device, applied to a second communication node, including:

[0018] A first sending module, configured to send predetermined physical downlink shared channel PDSCH configuration information to the first communication node;

[0019] A second determination module is configured to determine downlink control information DCI for scheduling PDSCH on at least one carrier according to the PDSCH configuration information;

[0020] The second sending module is configured to send the downlink control information to the first communication node.

[0021] An embodiment of the present application provides a device, including: a memory, and one or more processors;

[0022] The memory is used to store one or more programs;

[0023] When the one or more programs are executed by the one or more processors, the one or more processors implement the method described in any of the above embodiments.

[0024] An embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any of the above embodiments is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a flow chart of an information scheduling method provided by an embodiment of the present application;

[0026] Figure 2 is a flow chart of another information scheduling method provided by an embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of scheduling between a PDCCH and a PDSCH to meet a preset time provided by an embodiment of the present application;

[0028] Figure 4 It is a structural block diagram of an information scheduling device provided in an embodiment of the present application;

[0029] Figure 5 is a structural block diagram of another information scheduling device provided in an embodiment of the present application;

[0030] Figure 6 It is a structural schematic diagram of a device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0032] According to the 3rd Generation Partnership Project (3GPP) 5G protocol, DCI format 1_0 and DCI format 1_1 are used to schedule PDSCH on one carrier. In addition, the DCI format 1_2 newly introduced by 3GPP in the Release 16 (R16) protocol can only be used to schedule PDSCH on one carrier. In order to schedule PDSCH on multiple carriers, the base station needs to send multiple DCIs, resulting in a high load on the transmission control signaling of the 5G system. Reducing the resource load of control signaling, especially the resource load occupied by DCI, can improve the utilization efficiency of 5G system resources. In addition, after the resource load occupied by DCI is reduced, the UE allocates less energy to detect DCI, which helps the user terminal (User Equipment, UE) save energy.

[0033] In the existing 5G system and standards, Radio Resource Control (RRC) configures carriers for self-scheduling or cross-carrier scheduling. Self-scheduling means receiving DCI on the current carrier and scheduling PDSCH on the current carrier; cross-carrier scheduling means receiving DCI on one carrier and scheduling PDSCH on another carrier. When RRC configures a carrier (denoted as carrier C) for cross-carrier scheduling, RRC configures the scheduling carrier of carrier C (that is, which carrier schedules carrier C) and configures the carrier indicator field (CIF) index corresponding to carrier C. The CIF field in DCI indicates the CIF index. For example, when the CIF field in DCI on the scheduling carrier indicates the CIF index of carrier C, the DCI schedules PDSCH on carrier C. Cross-carrier scheduling is configured by the RRC cross-carrier scheduling configuration (CrossCarrierSchedulingConfig) information element. The scheduling cell Id (schedulingCellId) information element in the CrossCarrierSchedulingConfig information element configures the carrier index of the scheduled carrier, and the cell scheduling CIF index (cif-InSchedulingCell) information element in the CrossCarrierSchedulingConfig information element configures the CIF index corresponding to the carrier. Assuming that RRC configures carrier C to be cross-carrier scheduled by carrier A and configures the CIF index corresponding to carrier C to 1, when the CIF field in the DCI on carrier A indicates that the CIF index is 1, this DCI schedules PDSCH on carrier C. It should be noted that the CIF field cannot be configured in DCI format 1_0, that is, DCI format 1_0 can only be used for self-scheduling and cannot be used for cross-carrier scheduling; the CIF field can be configured in DCI format 1_1 and DCI format 1_2, that is, they can be used for cross-carrier scheduling.

[0034] When the RRC configures the carrier to be self-scheduled, DCI format 1_0, DCI format 1_1, and DCI format 1_2 are used to schedule the PDSCH on this carrier; when the RRC configures the carrier to be cross-carrier scheduled, the CIF field of the DCI (DCI format 1_1 and DCI format 1_2) on the scheduling carrier can only indicate one CIF index per scheduling, and one CIF index can only correspond to one carrier. In the case of cross-carrier scheduling, DCI format 1_1 and DCI format 1_2 can only schedule PDSCH on one carrier per scheduling. If the base station wants to schedule PDSCH on multiple carriers, the base station needs to send multiple DCIs, resulting in a higher load on the transmission control signaling of the 5G system.

[0035] In the existing 5G system and standards, the base station needs to indicate the time slot offset K 0, Start Length Indicator Value (SLIV) and PDSCH mapping type are used to determine the time slot and symbol of the scheduled PDSCH. RRC configures one or more PDSCH time domain resource allocation (Time Domain Resource Allocation) information elements in the PDSCH time domain resource allocation table (Time Domain Resource Allocation List) information element. The time domain resource allocation information element of PDSCH is indicated by PDSCH-TimeDomainResourceAllocation. Each PDSCH time domain resource allocation (Time Domain Resource Allocation) information element contains information element k0, mapping type (mappingType) and start length indicator value (Start Length Indicator Value), where k0 indicates the K of PDSCH. 0 , mappingType indicates the mapping type of PDSCH, and Start Length Indicator Value indicates the SLIV of PDSCH. The Time Domain Resource Assignment (TDRA) field in DCI indicates the TDRA index. TDRA index 0 corresponds to the first PDSCH-TimeDomainResourceAllocation in the PDSCH-TimeDomainResourceAllocationList information element, TDRA index 1 corresponds to the second PDSCH-TimeDomainResourceAllocation in the PDSCH-TimeDomainResourceAllocationList information element, and so on. Therefore, the UE can determine the K of the scheduled PDSCH according to the TDRA index indicated by the TDRA field in the DCI. 0 , SLIV and PDSCH mapping type to determine the time slot and symbol where the PDSCH is located.

[0036] Since DCI can only indicate one K through the TDRA field in each scheduling 0 , a SLIV and a PDSCH mapping type, thus limiting a DCI to only schedule PDSCH on one carrier at a time. If the base station wants to schedule PDSCH on multiple carriers, the base station needs to send multiple DCIs, resulting in a higher load on the transmission control signaling of the 5G system.

[0037] Therefore, in the existing 5G system and standards, there are many limitations on the mechanism of DCI scheduling PDSCH, which means that DCI can only schedule PDSCH on one carrier at a time. In order to reduce the load of system transmission control signaling, especially the load of DCI transmission, how to schedule PDSCH is an urgent problem to be solved.

[0038] In one embodiment, Figure 1 1 is a flow chart of an information scheduling method provided by an embodiment of the present application. This embodiment is applied to a first communication node. Exemplarily, the first communication node is a UE. Figure 1 As shown, this embodiment includes S110-S130.

[0039] S110. Receive PDSCH configuration information sent by the second communication node.

[0040] In an embodiment, the second communication node may be a base station and a network side (eg, the network side may be a core network). In an embodiment, the PDSCH configuration information is used to configure the scheduling information of the DCI on the PDSCH of at least one carrier for the second communication node and the first communication node.

[0041] S120. Receive DCI sent by the second communication node.

[0042] In an embodiment, the DCI includes various fields, for example, the DCI includes: a CIF field, a TDRA field, etc. In an embodiment, the PDSCH configuration information is to configure specific parameters for the information indicated in the CIF field and / or the TDRA field in the DCI.

[0043] S130. Determine scheduling information of a PDSCH on at least one carrier according to the PDSCH configuration information and the DCI.

[0044] In an embodiment, after the first communication node receives the PDSCH configuration information and the DCI, the scheduling information of the PDSCH on each carrier may be determined according to the PDSCH configuration information and the information indicated by different fields in the DCI.

[0045] In one embodiment, the scheduling information includes at least one of the following: the number of currently scheduled carriers, time domain resource indication information, the carrier of the currently scheduled PDSCH, and the CIF index of the currently scheduled PDSCH.

[0046] In an embodiment, the number of carriers currently scheduled refers to the number of carriers currently scheduled by the DCI, for example, the number of carriers currently scheduled may be one or more. The time domain resource indication information refers to the relevant information of the time domain resources occupied by the PDSCH currently scheduled by the DCI. The carrier currently scheduling the PDSCH refers to the carrier index where the PDSCH currently scheduled by the DCI is located. For example, the RRC signaling configures five carriers, and the carrier indexes are carrier 1, carrier 2, carrier 3, carrier 4 and carrier 5, respectively, and the carriers currently scheduling the PDSCH are carrier 2 and carrier 3, then the carriers currently scheduling the PDSCH refer to carrier 2 and carrier 3. The CIF index of the currently scheduled PDSCH refers to the CIF index corresponding to the carrier where the PDSCH currently scheduled by the DCI is located, that is, there is a mapping relationship between the CIF index and the carrier where the current PDSCH is located.

[0047] In one embodiment, the PDSCH configuration information includes: the total number of carriers M that can be scheduled by DCI; a radio network temporary identifier (RNTI) used to indicate that DCI currently schedules PDCSH on one or N carriers, where N is a positive integer greater than 1 and N is less than or equal to M.

[0048] In an embodiment, the total number of carriers that can be scheduled by DCI refers to the total number of carriers that can be scheduled by DCI configured by RRC signaling; DCI currently schedules one or N carriers, which belong to a subset of the total carriers that can be scheduled by DCI, that is, N is less than or equal to the total number of carriers that can be scheduled by DCI. Exemplarily, assuming that the total number of carriers that can be scheduled by DCI is 5, that is, M=5, then the one or N carriers that are currently scheduled by DCI indicated by RNTI are one or more of the 5 total schedulable carriers, and N is less than or equal to 5.

[0049] In one embodiment, the PDSCH configuration information includes: a mapping relationship between CIF indexes and carriers, and each CIF index is mapped to at least one carrier.

[0050] In an embodiment, a mapping relationship may be established between a CIF index and one or more carriers, that is, a mapping relationship may be established between a CIF index and each carrier currently scheduled by the DCI. After the first communication node receives the PDSCH configuration information sent by the second communication node, it may be determined on which carrier the PDSCH is currently scheduled by the DCI. In an embodiment, the second communication node configures the mapping relationship between the CIF index and the carrier, and notifies the first communication node of the mapping relationship between the CIF index and the carrier through RRC signaling.

[0051] In one embodiment, the CIF field in the DCI indicates a CIF index, and the carrier mapped by the CIF index is the carrier of the PDCSH currently scheduled by the DCI;

[0052] In the case where the CIF index indicated by the CIF field is mapped to N carriers, the DCI is used to schedule PDCSH on N carriers and schedule one PDSCH on each carrier, where N is a positive integer greater than 1;

[0053] In the case where the CIF index indicated by the CIF field is mapped to one carrier, the DCI is used to schedule the PDCSH on one carrier.

[0054] In an embodiment, when a mapping relationship is established between a CIF index and at least two carriers, the first communication node determines the CIF index in the CIF domain through the PDSCH configuration information, that is, the carrier index currently scheduled by the DCI can be determined. In one embodiment, only one PDSCH can be scheduled on each carrier. In the case where the CIF index corresponds to multiple carrier indexes, the DCI can directly schedule the PDSCH on multiple carriers, and one PDSCH is scheduled on each carrier, thereby realizing that the PDSCH on one or more carriers can be scheduled through the PDSCH configuration information, reducing the load of the transmission control signaling.

[0055] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a TDRA index and at least one set of time domain resource indication information, each set of time domain resource indication information includes: a time slot offset K 0 , SLIV and PDSCH mapping types.

[0056] In one embodiment, each set of time domain resource indication information includes the same K 0 .

[0057] In one embodiment, each set of time domain resource indication information includes the same SLIV.

[0058] In one embodiment, the PDSCH configuration information further includes: a mapping relationship between each group of time domain resource indication information and a carrier.

[0059] In one embodiment, the TDRA field in the DCI indicates a TDRA index;

[0060] In the case where the TDRA index is mapped to N groups of time domain resource indication information, the DCI is used to schedule the PDSCH on the carrier corresponding to the N groups of time domain resource indication information, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1;

[0061] In the case where the TDRA index is mapped to a set of time domain resource indication information, the DCI is used to schedule the PDSCH on a carrier corresponding to the set of time domain resource indication information.

[0062] In an embodiment, the second communication node notifies the first communication node of the mapping relationship between the TDRA index and at least one group of time domain resource indication information, and notifies the mapping relationship between each group of time domain resource indication information and the carrier. When the TDRA index indicated by the TDRA domain in the DCI is configured through the PDSCH configuration information, the carrier index currently scheduled by the DCI can be determined based on the mapping relationship between the TDRA index and the time domain resource indication information, and the mapping relationship between each group of time domain resource indication information and the carrier. In the case where the DCI schedules PDSCH on carriers corresponding to at least two groups of time domain resource indication information, one PDSCH is scheduled on each carrier; in the case where the TDRA index is mapped to a group of time domain resource indication information, the DCI schedules PDSCH on the carrier corresponding to the group of time domain resource indication information.

[0063] In one embodiment, the CIF field and the TDRA field in the DCI jointly indicate the TDRA index. In an embodiment, the TDRA index may be indicated by the bits occupied by the CIF field and the corresponding decimal value, and the bits occupied by the TDRA field and the corresponding decimal value.

[0064] In one embodiment, the CIF field in the DCI indicates a CIF index, and the CIF index is mapped to at least one carrier; the TDRA field in the DCI indicates a TDRA index;

[0065] In the case where the CIF index indicated by the CIF field in the DCI is mapped to N carriers, and the TDRA index indicated by the TDRA field in the DCI is mapped to N groups of time domain resource indication information, the DCI is used to schedule PDSCHs on N carriers, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1;

[0066] In the case where a CIF index indicated by a CIF field in a DCI is mapped to one carrier, and a TDRA index indicated by a TDRA field in the DCI is mapped to a set of time domain resource indication information, the DCI is used to schedule a PDSCH on one carrier.

[0067] In an embodiment, the second communication node notifies the first communication node of a mapping relationship between a TDRA index and at least one set of time domain resource indication information, and that the CIF index indicated in the CIF field in the DCI is mapped to at least one carrier. If the CIF index indicated in the CIF field in the DCI is mapped to at least two carriers, and the TDRA index indicated in the TDRA field in the DCI is mapped to at least two sets of time domain resource indication information, the DCI schedules PDSCH on at least two carriers and schedules one PDSCH on each carrier. In one embodiment, when the CIF index indicated in the CIF field in the DCI is mapped to one carrier, and the TDRA index indicated in the TDRA field in the DCI is mapped to a set of time domain resource indication information, the DCI schedules PDSCH on this carrier.

[0068] In one embodiment, the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field of the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field of the DCI. In an embodiment, when the TDRA index maps N groups of time domain resource indication information, the number of carriers mapped by the CIF index is also N. Wherein N is a positive integer greater than 1.

[0069] In one embodiment, the CIF field in the DCI is used to indicate the CIF index, and the CIF index is mapped to a carrier with a CIF index of i; when the TDRA index indicated in the TDRA field in the DCI is mapped to N groups of time domain resource indication information, the DCI schedules PDSCH on N carriers with CIF indexes of imodM, (i+1)modM...(i+N-1)modM, and one PDSCH is scheduled on each carrier; M is the total number of carriers that can be scheduled by the DCI, N is a positive integer greater than 1, and mod is a modulo operation.

[0070] In one embodiment, the DCI indicates two CIF fields, and each CIF field indicates a CIF index, and each CIF index is mapped to a carrier. In an embodiment, the RRC configures multiple carriers for the first communication node, and establishes a mapping relationship between each carrier and the CIF index, that is, one CIF index is mapped to one carrier. In the case where the DCI indicates two CIF fields, the carrier where the currently scheduled PDSCH is located can be determined based on the CIF index indicated by each CIF field and the mapping relationship between the CIF index and the carrier.

[0071] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a CIF index and two groups of carriers, the first group of carriers includes one carrier, and the second group of carriers includes at least one carrier.

[0072] In one embodiment, when the CIF index corresponds to the first group of carriers, the DCI is used to schedule the PDSCH on a carrier mapped by the CIF index in the first group of carriers;

[0073] In the case where the CIF index corresponds to the second group of carriers, the DCI is used to schedule a PDSCH on at least one carrier mapped by the CIF index in the second group of carriers, and one PDSCH is scheduled on each carrier.

[0074] In an embodiment, the second communication node notifies the first communication node of the mapping relationship between the CIF index and the two groups of carriers. The second communication node notifies the first communication node whether the CIF index in the current DCI corresponds to the first group of carriers or the second group of carriers. In one embodiment, when the CIF index in the DCI corresponds to the first group of carriers, the CIF index in the CIF domain maps one carrier in the first group of carriers, and the DCI schedules PDSCH on this carrier. In one embodiment, when the CIF index in the DCI corresponds to the second group of carriers, the CIF index in the CIF domain maps at least one carrier in the second group of carriers, and the DCI schedules PDSCH on this at least one carrier. When the CIF index indicated by the CIF domain in the DCI is mapped to N carriers, the DCI schedules PDSCH on N carriers, and schedules one PDSCH on each carrier, where N is a positive integer greater than 1.

[0075] In one embodiment, the PDSCH configuration information includes: time domain resource indication information; in the time domain resource indication information, K 0 When K is equal to 0, 0 It is used to indicate the first time slot between the scheduling time of PDSCH on each carrier and the corresponding physical downlink control channel (Physical Downlink Control CHannel, PDCCH) that meets the preset time.

[0076] In the embodiment, when one DCI schedules PDSCH on multiple carriers, since the subcarrier spacing of each carrier is different, the time interval between the time when PDSCH is scheduled on each carrier and the PDCCH is different. In order to reduce the scheduling delay on the carrier, K 0 Equal to 0 for reinterpretation, that is, different carrier pairs K 0 Being equal to 0 has different interpretations to meet the preset time between the scheduling moment of PDSCH and the corresponding PDCCH on each carrier, thereby improving the scheduling flexibility and reducing the scheduling delay.

[0077] Figure 2 is a flow chart of another information scheduling method provided by an embodiment of the present application. This embodiment is applied to a second communication node. Exemplarily, the second communication node may be a base station or a network side (core network). Figure 2 As shown, this embodiment includes S210-S230.

[0078] S210. Send predetermined PDSCH configuration information to the first communication node.

[0079] S220. Determine, according to the PDSCH configuration information, a DCI for scheduling a PDSCH on at least one carrier.

[0080] S230. Send the DCI to the first communication node.

[0081] In one embodiment, the PDSCH configuration information includes: the total number of carriers M that can be scheduled by DCI; a radio network temporary identifier RNTI used to indicate that DCI currently schedules PDCSH on one or N carriers, where N is a positive integer greater than 1 and N is less than or equal to M.

[0082] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a carrier indicator field CIF index and a carrier, and each CIF index is mapped to at least one carrier.

[0083] In one embodiment, the CIF field in the DCI indicates a CIF index, and the carrier mapped by the CIF index is the carrier of the PDCSH currently scheduled by the DCI;

[0084] In the case where the CIF index indicated by the CIF field is mapped to N carriers, the DCI is used to schedule PDCSH on N carriers and schedule one PDSCH on each carrier, where N is a positive integer greater than 1;

[0085] In the case where the CIF index indicated by the CIF field is mapped to one carrier, the DCI is used to schedule the PDCSH on one carrier.

[0086] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a time domain resource allocation TDRA index and at least one set of time domain resource indication information, each set of time domain resource indication information includes: a time slot offset K 0 , starting length indication value SLIV and PDSCH mapping type.

[0087] In one embodiment, each set of time domain resource indication information includes the same K 0 .

[0088] In one embodiment, each set of time domain resource indication information includes the same SLIV.

[0089] In one embodiment, the PDSCH configuration information further includes: a mapping relationship between each group of time domain resource indication information and a carrier.

[0090] In one embodiment, the TDRA field in the DCI indicates a TDRA index;

[0091] In the case where the TDRA index is mapped to N groups of time domain resource indication information, the DCI is used to schedule the PDSCH on the carrier corresponding to the N groups of time domain resource indication information, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1;

[0092] In the case where the TDRA index is mapped to a set of time domain resource indication information, the DCI is used to schedule the PDSCH on a carrier corresponding to the set of time domain resource indication information.

[0093] In one embodiment, the CIF field and the TDRA field in the DCI jointly indicate the TDRA index.

[0094] In one embodiment, the CIF field in the DCI indicates a CIF index, and the CIF index is mapped to at least one carrier; the TDRA field in the DCI indicates a TDRA index;

[0095] In the case where the CIF index indicated by the CIF field in the DCI is mapped to N carriers, and the TDRA index indicated by the TDRA field in the DCI is mapped to N groups of time domain resource indication information, the DCI is used to schedule PDSCHs on N carriers, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1;

[0096] In the case where a CIF index indicated by a CIF field in a DCI is mapped to one carrier, and a TDRA index indicated by a TDRA field in the DCI is mapped to a set of time domain resource indication information, the DCI is used to schedule a PDSCH on one carrier.

[0097] In one embodiment, the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI.

[0098] In one embodiment, a CIF field in a DCI is used to indicate a CIF index, and the CIF index is mapped to a carrier with a CIF index i;

[0099] When the TDRA index indicated in the TDRA domain in the DCI is mapped to N groups of time domain resource indication information, the DCI schedules PDSCH on N carriers whose CIF indexes are imodM, (i+1)modM...(i+N-1)modM, and one PDSCH is scheduled on each carrier; M is the total number of carriers that can be scheduled by the DCI, N is a positive integer greater than 1, and mod is a modulo operation.

[0100] In one embodiment, the DCI indicates two CIF fields, each CIF field indicates a CIF index, and each CIF index is mapped to a carrier.

[0101] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a CIF index and two groups of carriers, the first group of carriers includes one carrier, and the second group of carriers includes at least one carrier.

[0102] In one embodiment, when the CIF index corresponds to the first group of carriers, the DCI is used to schedule the PDSCH on a carrier in the first group of carriers mapped by the CIF index;

[0103] In the case where the CIF index corresponds to the second group of carriers, the DCI is used to schedule a PDSCH on at least one carrier mapped by the CIF index in the second group of carriers, and one PDSCH is scheduled on each carrier.

[0104] In one embodiment, the PDSCH configuration information includes: time domain resource indication information; in the time domain resource indication information, K 0 When K is equal to 0, 0 It is used to indicate the first time slot between the scheduling time of PDSCH on each carrier and the corresponding physical downlink control channel PDCCH that meets the preset time.

[0105] In one implementation, in the existing 5G system and standard, when RRC signaling configures a carrier for cross-carrier scheduling, RRC signaling configures the corresponding scheduled carrier and the corresponding CIF index for the carrier. Among all carriers scheduled by the same carrier, each CIF index corresponds to one carrier, and each DCI can only schedule PDSCH on one carrier at a time, thereby increasing the transmission control signaling load of the 5G system.

[0106] In an embodiment, the total number of carriers M that can be scheduled by DCI and the RNTI used to indicate that DCI currently schedules PDCSH on one or N carriers are configured in the PDSCH configuration information through RRC signaling to reduce the load of the transmission control signaling of the 5G system. N is a positive integer greater than 1 and N is less than or equal to M. In other words, the total number of carriers that can be scheduled by DCI is directly configured through RRC signaling, and the second communication node configures different RNTIs to distinguish whether the DCI is scheduling PDSCH on one carrier or scheduling PDSCH on N carriers. The second communication node transmits the DCI to the first communication node through the PDCCH channel, and the first communication node determines the RNTI by blindly detecting the PDCCH, thereby determining whether the DCI is scheduling PDSCH on one carrier or scheduling PDSCH on N carriers.

[0107] Assume that RRC signaling configures two carriers for the first communication node, namely carrier A (corresponding to carrier index 0) and carrier B (corresponding to carrier index 1). At this time, the total number of carriers that can be scheduled by DCI is 2. RRC signaling configures the DCI on carrier A to schedule the carrier with carrier index 0 (i.e., carrier A) and the carrier with carrier index 1 (i.e., carrier B). In addition, RRC signaling configures two RNTIs, namely RNTI1 and RNTI2, wherein RNTI1 is used to indicate that the DCI on carrier A schedules the PDSCH on one carrier (carrier A) this time, and RNTI2 is used to indicate that the DCI on carrier A schedules the PDSCH on two carriers (carrier A and carrier B) this time. When the first communication node blindly detects the DCI through RNTI1 on the PDCCH channel, the DCI schedules the PDSCH on carrier A; when the first communication node blindly detects the DCI through RNTI2 on the PDCCH channel, the DCI schedules the PDSCH on carrier A and carrier B, with one PDSCH on each carrier.

[0108] In one implementation, in the existing 5G system and standard, when RRC signaling configures a carrier for cross-carrier scheduling, RRC signaling configures the corresponding scheduled carrier and the corresponding CIF index for the carrier. Among all carriers scheduled by the same carrier, each CIF index corresponds to one carrier, that is, each DCI can only schedule PDSCH on one carrier at a time, thereby increasing the transmission control signaling load of the 5G system.

[0109] In one embodiment, the mapping relationship between the CIF index and the carrier is configured in the PDSCH configuration information through RRC signaling, and each CIF index can be mapped to at least one carrier to reduce the load of the 5G system transmission control signaling. That is, the second communication node notifies the first communication node of the mapping relationship between the CIF index and the carrier, and one CIF index is mapped to at least one carrier. In the case where the CIF index indicated by the CIF field in the DCI is mapped to N carriers, the DCI schedules PDSCH on N carriers, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1; in the case where the CIF index indicated by the CIF field in the DCI is mapped to one carrier, the DCI schedules PDSCH on the carrier.

[0110] In an embodiment, the second communication node notifies the first communication node of the mapping relationship between the CIF index and the carrier through RRC signaling. RRC signaling configures the same scheduling carrier and the same CIF index on at least one carrier. In the case where the CIF index indicated by the CIF field in the DCI is mapped to N carriers, the DCI schedules PDSCH on N carriers, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1; in the case where the CIF index indicated by the CIF field in the DCI is mapped to one carrier, the DCI schedules PDSCH on this one carrier. In one embodiment, the second communication node may notify the first communication node of the mapping relationship between the CIF index and at least one carrier through a Media Access Control-Control Element (MAC CE) or DCI.

[0111] Assume that RRC signaling configures carrier A to schedule carrier B, carrier C, and carrier D across carriers. The carrier index of carrier A configured by RRC signaling is 0, the scheduling carrier index and CIF index of carrier B configured by RRC signaling are 0 and 1 respectively, the scheduling carrier index and CIF index of carrier C configured by RRC signaling are 0 and 1 respectively, and the scheduling carrier index and CIF index of carrier D configured by RRC signaling are 0 and 2 respectively. If the CIF index indicated by the CIF field in the DCI on carrier A is 1, the DCI schedules a PDSCH on carrier B and carrier C respectively; if the CIF index indicated by the CIF field in the DCI on carrier A is 2, the DCI schedules a PDSCH on carrier D.

[0112] In one embodiment, the second communication node notifies the first communication node of the mapping relationship between the CIF index and the carrier through RRC signaling. The RRC signaling configures the mapping relationship between the CIF index and the carrier index on the scheduled carrier.

[0113] Assume that RRC signaling configures four carriers for the first communication node, namely, carrier A, carrier B, carrier C and carrier D, and their corresponding carrier indexes are 0, 1, 2 and 3 respectively. RRC signaling configures carrier A to schedule carrier B, carrier C and carrier D across carriers. Table 1 is a mapping relationship table of a CIF index and a carrier index configured by RRC signaling. As shown in Table 1, when the CIF index indicated by the CIF field in the DCI is 0, the DCI schedules the PDSCH on carrier A; when the CIF field in the DCI indicates that the CIF index is 1, 2 or 3 respectively, the DCI schedules the PDSCH on the corresponding carrier B, carrier C or carrier D respectively (that is, the CIF index is 1, scheduling the PDSCH on carrier B; the CIF index is 2, scheduling the PDSCH on carrier C; the CIF index is 3, scheduling the PDSCH on carrier D;); when the CIF field in the DCI indicates that the CIF index is 4 or 5, since the CIF index is mapped to two carriers, the DCI schedules the PDSCH on the corresponding two carriers. When the CIF index indicated by the CIF field in the DCI is 4, the DCI schedules one PDSCH on carrier A and carrier B respectively; when the CIF index indicated by the CIF field in the DCI is 5, the DCI schedules one PDSCH on carrier C and carrier D respectively. When the CIF index indicated by the CIF field in the DCI is 6, the DCI schedules one PDSCH on carrier A, carrier B, and carrier C respectively; when the CIF index indicated by the CIF field in the DCI is 7, the DCI schedules one PDSCH on carrier A, carrier B, carrier C, and carrier D respectively.

[0114] Table 1 A mapping relationship table between CIF index and carrier index

[0115]

[0116]

[0117] In one embodiment, Table 2 is another mapping relationship table of CIF index and carrier index configured by RRC signaling. In order to reduce the design complexity of DCI, the 5G system may limit the maximum number of carriers that can be scheduled by each DCI at a time. Assuming that the 5G system limits DCI to scheduling a maximum of 2 carriers at a time, the mapping relationship between the CIF index and the carrier index is as described in Table 2. In the same context, the explanation of Table 2 can refer to the explanation of Table 1 and will not be repeated here. In one embodiment, the second communication node may notify the first communication node of the mapping relationship between the above-mentioned CIF index and the two groups of carriers via MAC CE or DCI.

[0118] Table 2 Another mapping relationship between CIF index and carrier index

[0119] CIF Index Carrier Index 0 0 1 1 2 2 3 3 4 0 and 1 5 1 and 2 6 2 and 3 7 0 and 2

[0120] In one implementation, in the existing 5G system and standard, DCI signaling indicates the scheduled carrier through the CIF field, and indicates the time slot and symbol of the PDSCH on the scheduled carrier through the TDRA field. Since the CIF field in the DCI can only indicate one carrier per scheduling, the TDRA field can only indicate the time slot and symbol of the PDSCH scheduled on this carrier, thus limiting the implementation of one DCI scheduling PDSCH on multiple carriers.

[0121] In one embodiment, the second communication node configures a mapping relationship between a TDRA index and at least one set of time domain resource indication information in the PDSCH configuration information through RRC signaling, and each set of time domain resource indication information includes a K 0 , a SLIV and a PDSCH mapping type. The second communication node notifies the first communication node of the mapping relationship between each group of time domain resource indication information and the carrier, so as to implement a DCI to schedule PDSCH on at least one carrier. The TDRA field in the DCI indicates the TDRA index. When the TDRA index is mapped to N groups of time domain resource indication information, the DCI schedules PDSCH on the carriers corresponding to the N groups of time domain resource indication information, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1; when the TDRA index is mapped to a group of time domain resource indication information, the DCI schedules PDSCH on the carrier corresponding to this group of time domain resource indication information. In one embodiment, the second communication node may notify the first communication node of the mapping relationship between the above-mentioned TDRA index and at least one group of time domain resource indication information via MAC CE or DCI.

[0122] Table 3 is a table of mapping relationships among a TDRA index, time domain resource indication information, and carrier provided in an embodiment of the present application. As shown in Table 3, multiple groups of time domain resource indication information are configured through RRC signaling, and the mapping relationship between the TDRA index and the time domain resource indication information, as well as the mapping relationship between the time domain resource indication information and the carrier. For a certain TDRA index, if a corresponding K is not configured for a certain carrier, 0 In the case of SLIV and PDSCH mapping types, if the TDRA field in the DCI indicates the TDRA index, this DCI does not schedule PDSCH on the carrier.

[0123] Assume that RRC signaling configures three carriers for the first communication node, namely carrier A, carrier B and carrier C. Carrier A schedules carrier B and carrier C across carriers. TDRA index 0 corresponds to the time domain resource indication information on carrier A. When the TDRA field in the DCI indicates TDRA index 0, the DCI schedules PDSCH on carrier A, and the K corresponding to this PDSCH 0, SLIV and PDSCH mapping types are K0_A0, S_A0 and M_A0 respectively. Similarly, TDRA index 1 and TDRA index 2 correspond to the time domain resource indication information on carrier B and C respectively. If the TDRA field in the DCI indicates TDRA index 1 or TDRA index 2, the DCI schedules PDSCH on carrier B or carrier C respectively.

[0124] TDRA index 3 corresponds to the time domain resource indication information on carrier A and carrier B. If the TDRA field in the DCI indicates TDRA index 3, the DCI schedules PDSCH on carrier A and carrier B, with one PDSCH scheduled on each carrier. In this scheduling, the K of the PDSCH scheduled on carrier A is 0 , SLIV and PDSCH mapping types are K0_A3, S_A3 and M_A3 respectively; K of the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_B3, S_B3 and M_B3 respectively. Similarly, if the TDRA field in the DCI indicates TDRA index 4, the DCI schedules PDSCH on carrier B and carrier C, with one PDSCH scheduled on each carrier; if the TDRA field in the DCI indicates TDRA index 5, the DCI schedules PDSCH on carrier A and carrier C, with one PDSCH scheduled on each carrier.

[0125] TDRA index 6 corresponds to the time domain resource indication information on carrier A, carrier B, and carrier C. When the TDRA field in the DCI indicates TDRA index 6, the DCI schedules PDSCH on carrier A, carrier B, and carrier C, with one PDSCH scheduled on each carrier. In this scheduling, the K of the PDSCH scheduled on carrier A is 0 , SLIV and PDSCH mapping types are K0_A6, S_A6 and M_A6 respectively; K of the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_B6, S_B6 and M_B6 respectively; K of PDSCH scheduled on wave C 0 , SLIV and PDSCH mapping types are K0_C6, S_C6 and M_C6 respectively.

[0126] Table 3 A mapping relationship table between TDRA index, time domain resource indication information and carrier

[0127]

[0128] In one embodiment, the second communication node notifies the first communication node of a mapping relationship between a TDRA index and at least one set of time domain resource indication information, where each set of time domain resource indication information includes a K 0, a SLIV and a PDSCH mapping type. The at least one set of time domain resource indication information includes the same K 0 In one embodiment, the second communication node may notify the first communication node of the mapping relationship between the TDRA index and at least one set of time domain resource indication information through MAC CE or DCI. In one embodiment, the second communication node may notify the first communication node of the mapping relationship between each set of time domain resource indication information and the carrier through MAC CE or DCI.

[0129] The second communication node notifies the first communication node of the mapping relationship between each group of time domain resource indication information and the carrier. The TDRA field in the DCI indicates the TDRA index. When the TDRA index is mapped to N groups of time domain resource indication information, the DCI schedules PDSCH on the carriers corresponding to the N groups of time domain resource indication information, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1; when the TDRA index is mapped to a group of time domain resource indication information, the DCI schedules PDSCH on the carrier corresponding to the group of time domain resource indication information. In one embodiment, the base station may notify the mapping relationship between the above-mentioned TDRA index and at least one group of time domain resource indication information via MAC CE or DCI.

[0130] Table 4 is another mapping relationship table between TDRA index, time domain resource indication information and carrier provided in an embodiment of the present application. As shown in Table 4, at least one set of time domain resource indication information is configured through RRC signaling, and the at least one set of time domain resource indication information includes the same K 0 For a certain TDRA index, when a carrier is not configured with the corresponding SLIV and PDSCH mapping type, if the TDRA field in the DCI indicates the TDRA index, the DCI does not schedule PDSCH on the carrier.

[0131] Assume that RRC signaling configures three carriers for the first communication node, namely carrier A, carrier B and carrier C. Carrier A schedules carrier B and carrier C across carriers. TDRA index 0 corresponds to the time domain resource indication information on carrier A. When the TDRA field in the DCI indicates TDRA index 0, the DCI schedules PDSCH on carrier A and the K corresponding to this PDSCH 0 , SLIV and PDSCH mapping types are K0_0, S_A0 and M_A0 respectively. Similarly, TDRA index 1 and TDRA index 2 correspond to the time domain resource indication information on carrier B and carrier C respectively. When the TDRA field in the DCI indicates TDRA index 1 or TDRA index 2, the DCI scheduling schedules PDSCH on carrier B or carrier C respectively.

[0132] TDRA index 3 corresponds to the time domain resource indication information on carrier A and carrier B. When the TDRA field in the DCI indicates TDRA index 3, the DCI schedules PDSCH on carrier A and carrier B, with one PDSCH scheduled on each carrier. In this scheduling, the K of the PDSCH scheduled on carrier A is 0 , SLIV and PDSCH mapping types are K0_3, S_A3 and M_A3 respectively; K of the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_3, S_B3 and M_B3 respectively. Similarly, when the TDRA field in the DCI indicates TDRA index 4, the DCI schedules PDSCH on carrier B and carrier C, with one PDSCH scheduled on each carrier; when the TDRA field in the DCI indicates TDRA index 5, the DCI schedules PDSCH on carrier A and carrier C, with one PDSCH scheduled on each carrier.

[0133] TDRA index 6 corresponds to the time domain resource indication information on carrier A, carrier B, and carrier C. When the TDRA field in the DCI indicates TDRA index 6, the DCI schedules PDSCH on carrier A, carrier B, and carrier C, with one PDSCH scheduled on each carrier. In this scheduling, the K of the PDSCH scheduled on carrier A is 0 , SLIV and PDSCH mapping types are K0_6, S_A6 and M_A6 respectively; K of the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_6, S_B6 and M_B6 respectively; K of PDSCH scheduled on wave C 0 , SLIV and PDSCH mapping types are K0_6, S_C6 and M_C6 respectively.

[0134] Table 4 Another mapping relationship table among TDRA index, time domain resource indication information and carrier

[0135]

[0136]

[0137] In one implementation, in the existing 5G system and standard, DCI indicates the scheduled carrier through the CIF field, and indicates the time slot and symbol of the PDSCH on the scheduled carrier through the TDRA field. In the above embodiment of establishing a mapping relationship between the TDRA index and the time domain resource indication information, and between the time domain resource indication information and the carrier, the first communication node determines the carrier where the DCI currently schedules the PDSCH through the TDRA field in the DCI, and the CIF field does not need to be used as a carrier indication.

[0138] In an embodiment, in order to make full use of the CIF domain, the CIF domain and the TDRA domain are used to jointly indicate the TDRA index. Assume that the CIF domain is represented by X (X is a positive integer) bits, and its corresponding decimal value is CIF_X; the TDRA domain is represented by Y (Y is a positive integer) bits, and its corresponding decimal value is TDRA_Y. In the case where the TDRA index is jointly indicated by the CIF domain and the TDRA domain, and the CIF domain is used as the high bit and the TDRA domain is used as the low bit, the TDRA index jointly indicated by the CIF domain and the TDRA domain is CIF_X*2^Y+TDRA_Y, that is, the TDRA index is the product value of CIF_X and 2 to the power of Y, and the sum of TDRA_Y. In the case where the CIF domain is used as the low bit and the TDRA domain is used as the high bit, the TDRA index jointly indicated by the CIF domain and the TDRA domain is TDRA_Y*2^X+CIF_X, that is, the TDRA index is the product value of TDRA_Y and 2 to the power of X, and the sum of CIF_X.

[0139] When the TDRA index is indicated by the TDRA field alone, there can be a maximum of 2^Y configurations; when the TDRA index is indicated by the CIF field and the TDRA field jointly, a maximum of 2^(X+Y) configurations can be indicated, thereby increasing the range of the TDRA index and improving the flexibility of the TDRA table configuration.

[0140] Assuming that the CIF domain is represented by 3 bits and the TDRA domain is represented by 4 bits, when the TDRA domain is used alone to indicate the TDRA index, a maximum of 16 configurations can be indicated; when the CIF domain and the TDRA domain jointly indicate the TDRA index, a total of 7 bits can indicate a maximum of 128 configurations. Assuming that the CIF domain is used as the high bit and the TDRA domain is used as the low bit, the decimal value indicated in the CIF domain is 2 and the decimal value indicated in the TDRA domain is 7, then the TDRA index jointly indicated by the CIF domain and the TDRA domain is 2*2^4+7=39. Exemplarily, Table 5 is a schematic table of a CIF domain and a TDRA domain jointly indicating a TDRA index range provided in an embodiment of the present application. As shown in Table 5, at this time, the DCI indicates the time domain resource indication information on carrier A and carrier B.

[0141] Assuming that the CIF field is used as the low bit and the TDRA field is used as the high bit, when the decimal value indicated by the CIF field is 2 and the decimal value indicated by the TDRA field is 7, the TDRA index jointly indicated by the CIF field and the TDRA field is 7*2^3+2=58. As shown in Table 5, at this time, the DCI indicates the time domain resource indication information on carrier A and carrier C.

[0142] Table 5 A schematic diagram of a CIF field and a TDRA field jointly indicating a TDRA index range

[0143]

[0144] In one implementation, in the existing 5G system and standards, since the CIF field in the DCI can only support one carrier at a time, the TDRA field can only indicate the time slot and symbol of the PDSCH scheduled on this one carrier, thereby limiting the implementation of one DCI scheduling PDSCH on multiple carriers and increasing the load of transmission control signaling.

[0145] In an embodiment, the second communication node notifies the first communication node of a mapping relationship between a TDRA index and at least one set of time domain resource indication information, each set of time domain resource indication information includes a K 0 , a SLIV and a PDSCH mapping type, and the CIF field in the DCI indicates a CIF index, and the CIF index is mapped to at least one carrier, so that one DCI can schedule PDSCH on multiple carriers. In the case where the CIF index indicated by the CIF field in the DCI is mapped to N carriers, and the TDRA index indicated by the TDRA field in the DCI is mapped to N groups of time domain resource indication information, the DCI schedules PDSCH on N carriers, and one PDSCH is scheduled on each carrier, and each group of time domain resource indication information corresponds to a PDSCH scheduled on one carrier, and N is a positive integer greater than 1; in the case where the CIF index indicated by the CIF field in the DCI is mapped to one carrier, and the TDRA index indicated by the TDRA field in the DCI is mapped to a group of time domain resource indication information, the DCI schedules PDSCH on this carrier.

[0146] In one embodiment, the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI.

[0147] Table 6 is another mapping relationship table between TDRA index, time domain resource indication information and carrier provided by an embodiment of the present application. As shown in Table 6, multiple groups of time domain resource indication information are configured in a TDRA table. Assume that the RRC signaling configures three carriers for the first communication node, namely carrier A, carrier B and carrier C. Carrier A schedules carrier B and carrier C across carriers. The CIF field indicating one or more carriers has been described in the above embodiments and will not be repeated here. When the CIF field in the DCI indicates carrier A and the TDRA index indicated by the TDRA field is 0, the DCI schedules PDSCH on carrier A and the K corresponding to the PDSCH 0, SLIV and PDSCH mapping types are K0_10, S_10 and M_10 respectively. If the CIF field in the DCI indicates carrier B and the TDRA index indicated by the TDRA field is 0, then the DCI schedules PDSCH on carrier B and the K corresponding to the PDSCH is 0 , SLIV and PDSCH mapping types are K0_10, S_10 and M_10 respectively.

[0148] If the CIF field in the DCI indicates carrier A and carrier B, in order to ensure that the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI, the TDRA index indicated by the TDRA field can only be 3, 4 or 5. Assuming that the TDRA index indicated by the TDRA field is 4, the DCI schedules PDSCH on carrier A and carrier B, and the K corresponding to the PDSCH scheduled on carrier A is 0 , SLIV and PDSCH mapping types are K0_14, S_14 and M_14 respectively; K corresponding to the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_24, S_24 and M_24 respectively. If the CIF field in the DCI indicates carrier B and carrier C, and the TDRA index indicated by the TDRA field is 4, then the DCI schedules PDSCH on carrier B and carrier C, and the K corresponding to the PDSCH scheduled on carrier B is 0 , SLIV and PDSCH mapping types are K0_14, S_14 and M_14 respectively; K corresponding to the PDSCH scheduled on carrier C 0 , SLIV and PDSCH mapping types are K0_24, S_24 and M_24 respectively.

[0149] If the CIF field in the DCI indicates carrier A, carrier B, and carrier C, in order to ensure that the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI, the TDRA index indicated by the TDRA field can only be 6, then the DCI schedules PDSCH on carrier A, carrier B, and carrier C, and the K corresponding to the PDSCH scheduled on carrier A is 0 , SLIV and PDSCH mapping types are K0_16, S_16 and M_16 respectively; K corresponding to the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_26, S_26 and M_26 respectively; K corresponding to the PDSCH scheduled on carrier C 0 , SLIV and PDSCH mapping types are K0_36, S_36 and M_36 respectively.

[0150] Table 6: Mapping relationship between another TDRA index, time domain resource indication information and carrier

[0151]

[0152] In one embodiment, the second communication node notifies the first communication node of a mapping relationship between a TDRA index and at least one set of time domain resource indication information, where each set of time domain resource indication information includes a K 0 , a SLIV and a PDSCH mapping type. The at least one set of time domain resource indication information includes the same K 0 .

[0153] The CIF field in the DCI indicates a CIF index, and the CIF index is mapped to at least one carrier. When the CIF index indicated in the CIF field in the DCI is mapped to N carriers, and the TDRA index indicated in the TDRA field in the DCI is mapped to N groups of time domain resource indication information, the DCI schedules PDSCH on N carriers, one PDSCH is scheduled on each carrier, and each group of time domain resource indication information corresponds to a PDSCH scheduled on one carrier, and N is a positive integer greater than 1; when the CIF index indicated in the CIF field in the DCI is mapped to one carrier, the TDRA index indicated in the TDRA field in the DCI is mapped to a group of time domain resource indication information, and the DCI schedules PDSCH on this carrier. In one embodiment, the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI.

[0154] Table 7 is a mapping relationship table of another TDRA index, time domain resource indication information and carrier provided in an embodiment of the present application. As shown in Table 7, multiple groups of time domain resource indication information are configured in one TDRA table and the multiple groups of time domain resource indication information contain the same K 0 . Assume that RRC signaling configures three carriers for the first communication node, namely carrier A, carrier B and carrier C. Carrier A schedules carrier B and carrier C across carriers. The CIF indicating one or more carriers has been described in the above embodiment and will not be repeated here. The CIF field in the DCI indicates carrier A, and the TDRA index indicated by the TDRA field is 0. Then the DCI schedules PDSCH on carrier A and the K corresponding to the PDSCH is 0 , SLIV and PDSCH mapping types are K0_0, S_10 and M_10 respectively. When the CIF field in the DCI indicates carrier B and the TDRA index indicated by the TDRA field is 0, the DCI schedules PDSCH on carrier B and the K corresponding to the PDSCH is 0 , SLIV and PDSCH mapping types are K0_0, S_10 and M_10 respectively.

[0155] The CIF field in the DCI indicates carrier A and carrier B. In order to ensure that the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI, the TDRA index indicated in the TDRA field can only be 3, 4 or 5. Assuming that the TDRA index indicated in the TDRA field is 4, the DCI schedules PDSCH on carrier A and carrier B, and the K corresponding to the PDSCH scheduled on carrier A is 0 , SLIV and PDSCH mapping types are K0_4, S_14 and M_14 respectively; K corresponding to the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_4, S_24 and M_24 respectively. When the CIF field in the DCI indicates carrier B and carrier C, and the TDRA index indicated by the TDRA field is 4, the DCI schedules PDSCH on carrier B and carrier C. The K corresponding to the PDSCH scheduled on carrier B is 0 , SLIV and PDSCH mapping types are K0_4, S_14 and M_14 respectively; K corresponding to the PDSCH scheduled on carrier C 0 , SLIV and PDSCH mapping types are K0_4, S_24 and M_24 respectively.

[0156] In the case where the CIF field in the DCI indicates carrier A, carrier B, and carrier C, in order to ensure that the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI, the TDRA index indicated by the TDRA field can only be 6. Then the DCI schedules PDSCH on carrier A, carrier B, and carrier C, and the K corresponding to the PDSCH scheduled on carrier A is 0 , SLIV and PDSCH mapping types are K0_6, S_16 and M_16 respectively; K corresponding to the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_6, S_26 and M_26 respectively; K corresponding to the PDSCH scheduled on carrier C 0 , SLIV and PDSCH mapping types are K0_6, S_36 and M_36 respectively.

[0157] Table 7: Mapping relationship table of another TDRA index, time domain resource indication information and carrier

[0158]

[0159]

[0160] In one implementation, in the existing 5G system and standards, since the CIF field of DCI can only support one carrier at a time, the TDRA field can only indicate the time slot and symbol of the PDSCH scheduled on this one carrier, thereby limiting the implementation of one DCI scheduling PDSCH on multiple carriers and increasing the load of transmission control signaling.

[0161] In an embodiment, when the CIF field in the DCI indicates a carrier with a CIF index of i, and the TDRA index indicated by the TDRA field in the DCI is mapped to N (N is a positive integer greater than 1) groups of time domain resource indication information, the DCI schedules PDSCH on N carriers with CIF indexes of imodM, (i+1)modM...(i+N-1)modM, one PDSCH is scheduled on each carrier, and each group of time domain resource indication information corresponds to a PDSCH scheduled on one carrier. Wherein, mod represents a modulo operation, and M is the total number of carriers that can be scheduled by the RRC signaling configuration, thereby realizing one DCI scheduling PDSCH on multiple carriers, thereby reducing the load of the second communication node transmitting control signaling, and the first communication node can allocate less energy for detecting DCI, which helps the first communication node save energy.

[0162] In the embodiment, this implementation is applicable to N groups of time domain resource indication information including the same K 0 The scenario (i.e., the example in Table 7 in the above embodiment) is also applicable to the case where N groups of time domain resource indication information do not contain the same K 0 Scenario (i.e., the example of Table 6 in the above embodiment). In this implementation, Table 6 is used as an example for description.

[0163] Assume that RRC signaling configures three carriers for the first communication node, namely carrier A, carrier B and carrier C. The carrier CIF indexes of carrier A, carrier B and carrier C are 0, 1 and 2 respectively. Carrier A schedules carrier B and carrier C across carriers. M is the total number of carriers scheduled by carrier A configured by RRC. Carrier A can schedule carrier A, carrier B and carrier C, that is, M=3.

[0164] In the DCI, the CIF index indicated by the CIF field is mapped to the carrier with carrier index 0 (i.e., carrier A). When the TDRA index indicated by the TDRA field is 0, i=0. Then the DCI schedules the PDSCH on the carrier with index 0 (carrier A) and the K corresponding to the PDSCH is 0 , SLIV and PDSCH mapping types are K0_10, S_10 and M_10 respectively.

[0165] In the DCI, the CIF index indicated by the CIF field is mapped to the carrier with carrier index 0 (i.e., carrier A), and the TDRA index indicated by the TDRA field is 4. At this time, i=0, and the DCI schedules PDSCH on the carrier with index 0 (carrier A) and the carrier with index 1 (carrier B). K corresponding to the PDSCH scheduled on carrier A 0 , SLIV and PDSCH mapping types are K0_14, S_14 and M_14 respectively; K corresponding to the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_24, S_24 and M_24 respectively.

[0166] In the DCI, the CIF index indicated by the CIF field is mapped to the carrier with a carrier index of 1 (i.e., carrier B), and the TDRA index indicated by the TDRA field is 4. At this time, i=1, and the DCI schedules PDSCH on the carrier with an index of 1 (carrier B) and a carrier with an index of 2 (carrier C). K corresponding to the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_14, S_14 and M_14 respectively; K corresponding to the PDSCH scheduled on carrier C 0 , SLIV and PDSCH mapping types are K0_24, S_24 and M_24 respectively.

[0167] In the DCI, the CIF index indicated by the CIF field is mapped to the carrier with a carrier index of 2 (i.e., carrier C), and the TDRA index indicated by the TDRA field is 4. At this time, i=2, and the DCI schedules PDSCH on the carrier with an index of 2 (carrier C) and the carrier with an index of 0 (carrier A). K corresponding to the PDSCH scheduled on carrier C 0 , SLIV and PDSCH mapping types are K0_14, S_14 and M_14 respectively; K corresponding to the PDSCH scheduled on carrier A 0 , SLIV and PDSCH mapping types are K0_24, S_24 and M_24 respectively.

[0168] In the case where the CIF index indicated by the CIF field in the DCI is mapped to the carrier with carrier index 0 (i.e., carrier A), and the TDRA index indicated by the TDRA field is 6, i=0, then the DCI schedules PDSCH on the carrier with index 0 (carrier A), the carrier with index 1 (carrier B), and the carrier with index 2 (carrier C). K corresponding to the PDSCH scheduled on carrier A 0 , SLIV and PDSCH mapping types are K0_16, S_16 and M_16 respectively; K corresponding to the PDSCH scheduled on carrier B 0, SLIV and PDSCH mapping types are K0_26, S_26 and M_26 respectively; K corresponding to the PDSCH scheduled on carrier C 0 , SLIV and PDSCH mapping types are K0_36, S_36 and M_36 respectively.

[0169] When the CIF index indicated by the CIF field in the DCI is mapped to the carrier with a carrier index of 2 (carrier C), and the TDRA index indicated by the TDRA field is 6, i = 2, and the DCI schedules PDSCH on the carrier with an index of 2 (carrier C), the carrier with an index of 0 (carrier A), and the carrier with an index of 1 (carrier B). K corresponding to the PDSCH scheduled on carrier C 0 , SLIV and PDSCH mapping types are K0_16, S_16 and M_16 respectively; K corresponding to the PDSCH scheduled on carrier A 0 , SLIV and PDSCH mapping types are K0_26, S_26 and M_26 respectively; K corresponding to the PDSCH scheduled on carrier B 0 , SLIV and PDSCH mapping types are K0_36, S_36 and M_36 respectively.

[0170] In the above embodiment, K in Table 3-7 0 , SLIV and PDSCH mapping types are existing technologies and will not be described here in detail.

[0171] In one implementation, in the existing 5G system and standards, since the CIF field in the DCI can only support one carrier at a time, the TDRA field can only indicate the time slot and symbol of the PDSCH scheduled on this one carrier, thereby limiting the implementation of one DCI scheduling PDSCH on multiple carriers and increasing the load of the 5G system transmission control signaling.

[0172] In an embodiment, the DCI indicates two CIF fields, each CIF field indicates a CIF index, and each CIF index is mapped to a carrier. The PDSCH is scheduled on the carriers mapped with the CIF indexes indicated by the DCI in the two CIF fields, and one PDSCH is scheduled on each carrier, thereby realizing that one DCI schedules PDSCHs on multiple carriers.

[0173] Assume that RRC signaling configures three carriers for the first communication node, namely carrier A, carrier B and carrier C. Carrier A cross-carrier schedules carrier B and carrier C, and the CIF indexes of carrier A, carrier B and carrier C are 0, 1 and 2 respectively.

[0174] When the two CIF fields in the DCI indicate CIF index 0 and CIF index 1 respectively, the DCI schedules PDSCH on carrier A and carrier B, with one PDSCH scheduled on each carrier. When the two CIF fields in the DCI indicate CIF index 1 and CIF index 2 respectively, the DCI schedules PDSCH on carrier B and carrier C, with one PDSCH scheduled on each carrier.

[0175] In one implementation, in the existing 5G system and standards, since the CIF field of DCI can only support one carrier at a time, the TDRA field can only indicate the time slot and symbol of the PDSCH scheduled on this one carrier, which limits the implementation of one DCI scheduling PDSCH on multiple carriers and increases the load of the 5G system transmission control signaling.

[0176] In an embodiment, the second communication node notifies the first communication node of a mapping relationship between a CIF index and two groups of carriers, the first group of carriers includes one carrier, and the second group of carriers includes at least one carrier. The second communication node notifies the first communication node whether the CIF index in the current DCI corresponds to the first group of carriers or the second group of carriers. In an embodiment, the second communication node may notify the first communication node of a mapping relationship between the CIF index and the two groups of carriers by means of MAC CE or DCI.

[0177] When the second communication node notifies the first communication node that the CIF index in the DCI corresponds to the first group of carriers, the CIF index indicated by the CIF field in the DCI maps a corresponding carrier in the first group of carriers, and the DCI schedules the PDSCH on this carrier.

[0178] When the second communication node notifies the first communication node that the CIF index in the DCI corresponds to the second group of carriers, the CIF index indicated by the CIF field in the DCI maps the corresponding at least one carrier in the second group of carriers. When the CIF index indicated by the CIF field in the DCI is mapped to N carriers, the DCI schedules PDSCH on N carriers, one PDSCH is scheduled on each carrier, and N is a positive integer greater than 1; when the CIF index indicated by the CIF field in the DCI is mapped to one carrier, the DCI schedules PDSCH on the carrier.

[0179] The second communication node notifies the first communication node of the mapping relationship between the CIF index and the two groups of carriers through RRC signaling. RRC signaling configures the mapping relationship between the CIF index and the carrier index on the scheduled carrier. Assume that RRC signaling configures 8 carriers for the first communication node, namely carrier A, carrier B, carrier C, carrier D, carrier E, carrier F, carrier G and carrier H, and their corresponding carrier indexes are 0, 1, 2, 3, 4, 5, 6 and 7 respectively. RRC signaling configures carrier A to schedule carrier B, carrier C, carrier D, carrier E, carrier F, carrier G and carrier H across carriers.

[0180] Table 8 is another mapping relationship table of CIF index and carrier index configured by RRC signaling. As shown in Table 8, assuming that the second communication node notifies the first communication node through RRC signaling configuration, the CIF index in the DCI corresponds to the first group of carriers, then the CIF index indicated by the CIF field in the DCI maps the corresponding carrier in the first group of carriers. In an embodiment, the CIF index indicated by the CIF field in the DCI is 0, and in the carrier index of the first group of carriers, CIF index 0 is mapped to carrier 0, then the DCI schedules PDSCH on carrier A; the CIF index indicated by the CIF field in the DCI is 2, and in the carrier index of the first group of carriers, CIF index 2 is mapped to carrier 2, then the DCI schedules PDSCH on carrier C.

[0181] Assuming that the second communication node notifies the first communication node through RRC signaling configuration, the CIF index in the DCI corresponds to the second group of carriers, then the CIF index indicated by the CIF field in the DCI maps the corresponding carrier in the second group of carriers. In an embodiment, when the CIF index indicated by the CIF field in the DCI is 0, in the carrier index of the second group of carriers, CIF index 0 is mapped to carrier 0 and carrier 1, then the DCI schedules PDSCH on carrier A and carrier B, and one PDSCH is scheduled on each carrier; when the CIF index indicated by the CIF field in the DCI is 1, in the carrier index of the second group of carriers, CIF index 1 is mapped to carrier 1, then the DCI schedules PDSCH on carrier B; when the CIF index indicated by the CIF field in the DCI is 6, in the carrier index of the second group of carriers, CIF index 6 is mapped to carrier 0, carrier 1 and carrier 2, then the DCI schedules PDSCH on carrier A, carrier B and C, and one PDSCH is scheduled on each carrier.

[0182] Table 8 Another mapping relationship between CIF index and carrier index

[0183]

[0184] In one implementation, the DCI is transmitted to the first communication node via the PDCCH, and the first communication node obtains the corresponding DCI information by blindly detecting the PDCCH. In the case of cross-carrier scheduling, and the subcarrier spacing of the scheduling carrier and the scheduled carrier is different, the PDSCH scheduling needs to meet the preset time requirements. The 3GPP protocol defines the corresponding PDCCH processing time under different subcarrier spacings, where μ PDCCH Indicates the subcarrier spacing of the carrier where the DCI is located, N pdsch Indicates the time required for PDCCH, which is counted in units of PDCCH symbols. Table 9 is a μ provided by the prior art. PDCCH and N pdsch As shown in Table 9, μ PDCCH 0 means that the PDCCH subcarrier interval is 15KHz, and the corresponding PDCCH processing time is 4 symbols; μ PDCCH 1 means that the PDCCH subcarrier interval is 30KHz, and the corresponding PDCCH processing time is 5 symbols; μ PDCCH 2 means that the PDCCH subcarrier interval is 60KHz, and the corresponding PDCCH processing time is 10 symbols; μ PDCCH 3 means that the PDCCH subcarrier spacing is 120KHz, and the corresponding PDCCH processing time is 14 symbols. When the PDCCH subcarrier spacing is smaller than the scheduled PDSCH spacing, PDSCH can only start transmission in the next time slot after the PDCCH processing delay is met. When the PDCCH subcarrier spacing is larger than the scheduled PDSCH spacing, PDSCH only needs to ensure that the spacing between PDSCH and PDCCH is larger than the corresponding PDCCH processing time.

[0185] Table 9 A μ PDCCH and N pdsch Mapping relationship table between

[0186] <![CDATA[μ PDCCH ]]> <![CDATA[N pdsch ]]> 0 4 1 5 2 10 3 14

[0187] According to the records in the 3GPP protocol, when the carrier is self-scheduling, the scheduling time of the PDSCH and the PDCCH should meet the preset time requirements. For PDSCH with PDSCH mapping type TypeA, if the PDCCH that schedules the PDSCH is not completely contained in the first three symbols of the time slot, the PDSCH cannot be scheduled on the time slot. At this time, the first time slot that meets the time requirements between PDSCH and PDCCH is the next time slot of the time slot. For PDSCH with PDSCH mapping type TypeB, the first symbol of PDSCH cannot be earlier than the first symbol of PDCCH that schedules the PDSCH. At this time, the first time slot that meets the time requirements between PDSCH and PDCCH is the time slot where the PDCCH is received.

[0188] In the existing 3GPP protocol, it has been described how to use K 0 , PDSCH mapping type and SLIV determine the time slot and symbol where PDSCH is located, where K 0 It is used to determine the time slot where the PDSCH is located. Assume that the subcarrier spacing of the PDCCH and the PDSCH is configured as μ PDCCH and μ PDSCH , PDCCH is received in time slot n, then the time slot number of PDSCH is At this time, K 0 =0 indicates a time slot

[0189] Figure 3 Schematic diagram of scheduling between PDCCH and PDSCH to meet preset time provided by an embodiment of the present application. Figure 3 As an example, the time requirements between PDCCH and the PDSCH it schedules are described. Assume that carrier A schedules carrier B across carriers, the subcarrier spacing of carrier A is 15KHz, and the subcarrier spacing of carrier B is 30KHz. Assume that both carrier A and carrier B schedule PDSCHs with PDSCH mapping type TypeA. The PDCCH on carrier A is on the first two symbols of the time slot. According to the existing protocol, when carrier A schedules the PDSCH on carrier A, the PDSCH can be on the same time slot as the corresponding PDCCH, that is, K 0 The minimum value that can be configured is 0.

[0190] In the case of carrier A scheduling PDSCH on carrier B across carriers, according to the existing 3GPP protocol, the second communication node first needs to reserve a PDCCH processing delay of 4 PDCCH symbols, and secondly, the second communication node can only start scheduling PDSCH in the next time slot after the PDCCH processing delay is satisfied. Figure 3The earliest PDSCH can be scheduled from time slot 1 on carrier B, that is, K 0 The minimum value can only be configured to 1.

[0191] When a DCI schedules PDSCH on multiple carriers, the time requirements between the PDSCH and PDCCH scheduled on each carrier are different due to the different subcarrier spacing of each carrier. In the existing 5G system and standards, only one K can be indicated through the TDRA field in a DCI. 0 , which leads to K 0 The value of is relatively limited. Figure 3 For example, if the DCI on carrier A schedules PDSCH on carrier A and carrier B, in order to simultaneously meet the time requirement between PDSCH on carrier A and PDCCH carrying the DCI and the time requirement between PDSCH on carrier B and PDCCH carrying the DCI, K 0 The minimum value can only be configured as 1, which results in that the PDSCH on carrier A can only be scheduled on time slot 1 at the earliest, increasing the scheduling delay on carrier A.

[0192] In an embodiment, K 0 The value of K is reinterpreted. 0 Configured as 0(K 0 = 0) indicates the first time slot between the scheduled time of PDSCH on each carrier and the corresponding PDCCH that meets the preset time. 0 In the case of different carriers, different carriers have different delays between PDSCH and PDCCH. 0 There are different interpretations, which improves scheduling flexibility and reduces scheduling delay.

[0193] by Figure 3 For example, suppose carrier A schedules carrier B across carriers, the subcarrier spacing of carrier A is 15KHz, and the subcarrier spacing of carrier B is 30KHz. Assume that both carrier A and carrier B schedule PDSCHs with PDSCH mapping type TypeA, and the PDCCH on carrier A is in the first two symbols of the time slot. According to the existing protocol, when carrier A schedules PDSCH on carrier A, PDSCH can be in the same time slot as the corresponding PDCCH, that is, K 0 The minimum value can be configured as 0. At this time, the first time slot on carrier A that meets the time requirement between PDSCH and PDCCH is time slot 0.

[0194] In the case of carrier A scheduling PDSCH on carrier B across carriers, according to the existing protocol, the second communication node first needs to reserve a PDCCH processing delay of 4 PDCCH symbols, and secondly, the second communication node can only start scheduling PDSCH in the next time slot after the PDCCH processing delay is met. Figure 3 The earliest PDSCH can be scheduled from time slot 1 on carrier B, that is, K 0 The minimum value can only be configured as 1. At this time, the first time slot on carrier B that meets the time requirement between PDSCH and PDCCH is time slot 1.

[0195] If K 0 Configured as 0(K 0 =0) indicates the first time slot on each carrier that meets the time requirement between PDSCH and PDCCH. For carrier A, K 0 =0 indicates time slot 0, K 0 =1 indicates time slot 1; for carrier B, K 0 =0 indicates time slot 1, K 0 =1 indicates time slot 2, and so on. At this time, the second communication node schedules PDSCH on time slot 0 of carrier A and time slot 1 of carrier B. The second communication node only indicates one K in the DCI. 0 value, that is, K 0 Configured to 0.

[0196] In one implementation, the base station configures two carriers for the user terminal, namely carrier 1 and carrier 2. Carrier 1 is a Long Term Evolution (LTE) carrier or a New Radio (NR) carrier, and carrier 2 is an NR carrier. In order to fully utilize the advantages of the Multiple Input Multiple Output (MIMO) technology of the NR system, the user terminal needs to support the use of two antenna ports to send uplink signals on carrier 2. In the case of using two antenna ports to send uplink signals on carrier 2, the user terminal is configured with two sets of RF links, plus a set of RF links on carrier 1. If the user terminal sends uplink signals on carrier 1 and carrier 2 at the same time, the terminal is configured with a total of three sets of RF links. Configuring three sets of RF links results in a higher cost for the user terminal. In view of this, the embodiment of the present application limits the sending of uplink signals by the user terminal, so that the user terminal can only configure two sets of RF links and can also fully utilize the advantages of the MIMO technology of the NR system.

[0197] In one embodiment, the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. The user terminal has two transmission modes, namely, transmission mode 1 and transmission mode 2.

[0198] The transmission mode 1 includes: the terminal is allowed to send an uplink signal on carrier 1.

[0199] The second transmission mode includes: the terminal is not allowed to send uplink signals on carrier 2.

[0200] In one embodiment, the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. The user terminal has two transmission modes, namely, transmission mode 1 and transmission mode 2.

[0201] The transmission mode 1 includes: the user terminal uses one antenna port to send an uplink signal on carrier 1, and the user terminal does not send an uplink signal on carrier 2; the user terminal uses one antenna port to send an uplink signal on carrier 1, and the user terminal uses one antenna port to send an uplink signal on carrier 2; the user terminal does not send an uplink signal on carrier 1, and the user terminal uses one antenna port to send an uplink signal on carrier 2.

[0202] The second transmission mode includes: the user terminal does not send an uplink signal on carrier 1, and the user terminal uses two antenna ports to send an uplink signal on carrier 2; the user terminal does not send an uplink signal on carrier 1, and the user terminal uses one antenna port to send an uplink signal on carrier 2.

[0203] In one embodiment, the uplink signal includes a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), a physical uplink control channel (Physical Uplink Control Channel, PUCCH), a channel sounding reference signal (Sounding Reference Signal, SRS) and a random access channel (Physical Random Access Channel, PRACH).

[0204] In one embodiment, carrier 1 is an LTE carrier and carrier 2 is an NR carrier.

[0205] In one embodiment, carrier 1 is an NR carrier and carrier 2 is another NR carrier.

[0206] In one embodiment, when carrier 1 is an NR carrier and carrier 2 is another NR carrier, the base station configures carrier 1 and carrier 2 in the same PUCCH group (denoted as PUCCH Group), which helps to reuse the uplink signal multiplexing and discarding rules in the existing NR system and reduces the complexity of implementation.

[0207] In one embodiment, when the user terminal is in transmission mode 1, the user terminal configures one set of radio frequency links to carrier 1 and another set of radio frequency links to carrier 2. When the user terminal is in transmission mode 2, the user terminal configures both sets of radio frequency links to carrier 2.

[0208] In one embodiment, the base station configures two carriers, namely, carrier 1 and carrier 2, for the user terminal.

[0209] The user terminal determines whether to switch the transmission mode according to the switching trigger factor, and the switching trigger factor includes at least one of the following: DCI format, SRS index corresponding to the uplink signal, number of SRS ports corresponding to the uplink signal, number of ports for sending PUSCH, sending of PRACH, and frame structure.

[0210] In one embodiment, the base station configures two carriers, namely, carrier 1 and carrier 2, for the user terminal.

[0211] When the user terminal is currently in transmission mode one and the user terminal receives a notification from the base station informing the terminal to use two antenna ports to send uplink signals on carrier 2 in the next uplink period, the user terminal switches to transmission mode two and uses two antenna ports to send the uplink signals on carrier 2.

[0212] When the user terminal is currently in transmission mode 2 and the terminal receives a notification from the base station informing the terminal to send an uplink signal on carrier 1 in the next uplink period, the user terminal switches to transmission mode 1 and sends the uplink signal on carrier 1.

[0213] In one embodiment, when the above transmission mode switching condition is not met, the user terminal remains in the current transmission mode.

[0214] In one embodiment, the base station configures two carriers, namely, carrier 1 and carrier 2, for the user terminal.

[0215] When the user terminal receives a notification from the base station informing the user terminal to enter the transmission mode 2 in the next uplink period, the user terminal does not expect the base station to schedule an uplink signal on carrier 1 in the next uplink period.

[0216] When the user terminal receives a notification from the base station informing the user terminal to enter transmission mode 1 in the next uplink period, the user terminal does not expect the base station to schedule uplink signals to be sent using two antenna ports on carrier 2 in the next uplink period.

[0217] In one embodiment, the base station configures two carriers, namely, carrier 1 and carrier 2, for the user terminal.

[0218] When the user terminal receives a notification from the base station informing the user terminal to use two antenna ports to send uplink signals on carrier 2 in the next uplink period, the user terminal does not expect the base station to schedule uplink signals on carrier 1 in the next uplink period.

[0219] When the user terminal receives a notification from the base station informing the user terminal to send an uplink signal on carrier 1 in the next uplink period, the user terminal does not expect the base station to schedule the uplink signal to be sent using two antenna ports on carrier 2 in the next uplink period.

[0220] In one embodiment, it is assumed that the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. When the user terminal is currently in transmission mode 1, and the user terminal receives a notification from the base station informing the user terminal to use one antenna port to send an uplink signal on carrier 1 in the next uplink period, the user terminal remains in transmission mode 1 and sends the corresponding uplink signal on carrier 1.

[0221] In one embodiment, it is assumed that the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. When the user terminal is currently in transmission mode 1, and the user terminal receives a notification from the base station informing the user terminal to use one antenna port to send an uplink signal on carrier 2 in the next uplink period, the user terminal remains in transmission mode 1 and sends the corresponding uplink signal on carrier 2.

[0222] In one embodiment, it is assumed that the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. When the user terminal is currently in transmission mode 1, and the user terminal receives a notification from the base station informing the user terminal to use one antenna port to send uplink signals on carrier 1 and carrier 2 in the next uplink period, the user terminal remains in transmission mode 1 and sends corresponding uplink signals on carrier 1 and carrier 2.

[0223] In one embodiment, it is assumed that the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. When the user terminal is currently in transmission mode 1 and the user terminal receives a notification from the base station informing the terminal to use two antenna ports to send uplink signals on carrier 2 in the next uplink period, the user terminal switches to transmission mode 2 and sends the corresponding uplink signal on carrier 2.

[0224] In one embodiment, it is assumed that the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. When the user terminal is currently in transmission mode 2, and the user terminal receives a notification from the base station informing the user terminal to use two antenna ports to send uplink signals on carrier 2 in the next uplink period, the user terminal remains in transmission mode 2 and sends the corresponding uplink signal on carrier 2.

[0225] In one embodiment, it is assumed that the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. When the user terminal is currently in transmission mode 2, and the user terminal receives a notification from the base station informing the user terminal to use one antenna port to send an uplink signal on carrier 2 in the next uplink period, the user terminal remains in transmission mode 2 and sends the corresponding uplink signal on carrier 2.

[0226] In one embodiment, it is assumed that the base station configures two carriers for the user terminal, namely, carrier 1 and carrier 2. When the user terminal is currently in transmission mode 2 and the user terminal receives a notification from the base station informing the user terminal to use one antenna port to send an uplink signal on carrier 1 in the next uplink period, the user terminal switches to transmission mode 1 and sends the corresponding uplink signal on carrier 1.

[0227] In one embodiment, the next uplink period represents the next time slot, the next subframe or the next continuous uplink symbol. When the system configures the time division duplex (TDD) frame structure of "DDDSUDDSUU" for a 15KHz carrier and the configuration of the "S" time slot is "10:2:2", "D" represents the downlink time slot, "U" represents the uplink time slot, and "S" represents the special time slot. "10:2:2" means that the first 10 symbols of the special time slot are downlink symbols, the last 2 symbols of the special time slot are uplink symbols, and the remaining 2 symbols in the middle of the special time slot are flexible symbols (used as a protection interval for switching between uplink and downlink). In the frame structure "DDDSUDDSUU", the first continuous uplink symbol is the 16 uplink symbols contained in the first "S" time slot and the subsequent "U" time slot. The second continuous uplink symbol is the 30 uplink symbols contained in the second "S" time slot and the subsequent two "U" time slots.

[0228] In one embodiment, when the DCI indicates that the precoding matrix indicator (Transmission Precoding Matrix Indicator, TPMI) corresponding to the PUSCH is 0, the PUSCH scheduled by the DCI is sent using only one antenna port.

[0229] When the user terminal is currently in transmission mode 1, and the user terminal receives DCI sent by the base station, and the DCI instructs the user terminal to send a PUSCH with a TPMI of 0 on carrier 2 in the next uplink period, the user terminal does not need to switch to transmission mode 2 (that is, the user terminal remains in transmission mode 1) and send PUSCH on carrier 2.

[0230] When the user terminal is currently in transmission mode 1 and receives DCI sent by the base station, and the DCI instructs the user terminal to send a PUSCH with a TPMI not equal to 0 on carrier 2 in the next uplink period, the user terminal switches to transmission mode 2 and sends PUSCH on carrier 2.

[0231] When the user terminal is currently in the transmission mode 2 and the user terminal receives DCI sent by the base station, and the DCI instructs the user terminal to send a PUSCH with a TPMI of 0 on carrier 2 in the next uplink period, the user terminal remains in the transmission mode 2.

[0232] In one embodiment, when the DCI indicates that the TPMI corresponding to the PUSCH is 1, the PUSCH scheduled by the DCI is sent using only one antenna port.

[0233] When the user terminal is currently in transmission mode 1, and the user terminal receives DCI sent by the base station, and the DCI instructs the terminal to send a PUSCH with a TPMI of 1 on carrier 2 in the next uplink period, the user terminal does not need to switch to transmission mode 2 (that is, the terminal remains in transmission mode 1) and sends PUSCH on carrier 2.

[0234] When the user terminal is currently in transmission mode 1 and receives DCI sent by the base station, and the DCI instructs the user terminal to send a PUSCH with a TPMI not being 1 on carrier 2 in the next uplink period, the user terminal switches to transmission mode 2 and sends a PUSCH on carrier 2.

[0235] When the user terminal is currently in the transmission mode 2 and the user terminal receives DCI sent by the base station, and the DCI instructs the user terminal to send a PUSCH with a TPMI of 1 on carrier 2 in the next uplink period, the user terminal remains in the transmission mode 2.

[0236] In one embodiment, when the user terminal is currently in transmission mode one, and the user terminal receives DCI format A sent by the base station, and DCI format A indicates that the terminal sends an uplink signal on carrier 2 in the next uplink period, the user terminal does not need to switch to transmission mode two (that is, the user terminal remains in transmission mode one) and sends the uplink signal on carrier 2.

[0237] When the user terminal is currently in transmission mode 1 and receives DCI format B sent by the base station, and DCI format B indicates that the terminal sends an uplink signal on carrier 2 in the next uplink period, the user terminal switches to transmission mode 2 and sends the uplink signal on carrier 2.

[0238] When the user terminal is currently in transmission mode 2 and receives DCI format A sent by the base station, and DCI format A indicates that the terminal sends an uplink signal on carrier 2 in the next uplink period, the user terminal remains in transmission mode 2 and sends the uplink signal on carrier 2.

[0239] In one embodiment, DCI format A is DCI format 0_0, and DCI format B is a DCI format other than DCI format 0_0 that can schedule an uplink signal, trigger an uplink signal, or activate an uplink signal.

[0240] In one embodiment, when carrier 1 is an LTE carrier and carrier 2 is an NR carrier, the base station configures a reference frame structure for the user terminal. The reference frame structure includes an uplink U time slot and other time slots, and the other time slots include a downlink D time slot and a special S time slot.

[0241] When the user terminal is in the uplink U time slot, the user terminal is in the transmission mode 1; when the user terminal is in other time slots, the user terminal is in the transmission mode 2.

[0242] In one embodiment, when the user terminal enters from the uplink U time slot to other time slots, the user terminal switches from transmission mode 1 to transmission mode 2. When the user terminal enters from other time slots to the uplink U time slot, the user terminal switches from transmission mode 2 to transmission mode 1.

[0243] In one embodiment, the reference frame structure configured by the system includes P (P is a positive integer) consecutive uplink U time slots. During a period before the start of the P consecutive uplink U time slots and a period after the end of the P consecutive uplink U time slots, the user terminal does not send any uplink signal.

[0244] Figure 4 is a structural block diagram of an information scheduling device provided in an embodiment of the present application. Figure 4 As shown, the information scheduling device in this embodiment includes: a first receiving module 310 , a second receiving module 320 and a first determining module 330 .

[0245] The first receiving module 310 is configured to receive physical downlink shared channel PDSCH configuration information sent by the second communication node;

[0246] The second receiving module 320 is configured to receive downlink control information DCI sent by the second communication node;

[0247] The first determination module 330 is configured to determine scheduling information of a PDSCH on at least one carrier according to the PDSCH configuration information and the DCI.

[0248] The information scheduling device provided in this embodiment is configured to implement Figure 1 The information scheduling method applied to the first communication node in the illustrated embodiment and the information scheduling device provided in this embodiment are similar in implementation principle and technical effect, and will not be described in detail here.

[0249] In one embodiment, the scheduling information includes at least one of the following: the number of currently scheduled carriers, time domain resource indication information, the carrier of the currently scheduled PDSCH, and the carrier indication field CIF index of the currently scheduled PDSCH.

[0250] In one embodiment, the PDSCH configuration information includes: the total number of carriers M that can be scheduled by DCI; a radio network temporary identifier RNTI used to indicate that DCI currently schedules PDCSH on one or N carriers, where N is a positive integer greater than 1 and N is less than or equal to M.

[0251] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a carrier indicator field CIF index and a carrier, and each CIF index is mapped to at least one carrier.

[0252] In one embodiment, the CIF field in the DCI indicates a CIF index, and the carrier mapped by the CIF index is the carrier on which the DCI currently schedules PDCSH; when the CIF index indicated by the CIF field is mapped to N carriers, the DCI is used to schedule PDCSH on N carriers, and schedule one PDSCH on each carrier, where N is a positive integer greater than 1; when the CIF index indicated by the CIF field is mapped to one carrier, the DCI is used to schedule PDCSH on one carrier.

[0253] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a time domain resource allocation TDRA index and at least one set of time domain resource indication information, each set of time domain resource indication information includes: a time slot offset K 0 , starting length indication value SLIV and PDSCH mapping type.

[0254] In one embodiment, each set of time domain resource indication information includes the same K 0 .

[0255] In one embodiment, each set of time domain resource indication information includes the same SLIV.

[0256] In one embodiment, the PDSCH configuration information further includes: a mapping relationship between each group of time domain resource indication information and a carrier.

[0257] In one embodiment, the TDRA field in the DCI indicates a TDRA index; when the TDRA index is mapped to N groups of time domain resource indication information, the DCI is used to schedule PDSCH on carriers corresponding to the N groups of time domain resource indication information, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1; when the TDRA index is mapped to a group of time domain resource indication information, the DCI is used to schedule PDSCH on carriers corresponding to a group of time domain resource indication information.

[0258] In one embodiment, the CIF field and the TDRA field in the DCI jointly indicate the TDRA index.

[0259] In one embodiment, the CIF field in the DCI indicates a CIF index, and the CIF index is mapped to at least one carrier; the TDRA field in the DCI indicates a TDRA index;

[0260] In the case where the CIF index indicated by the CIF field in the DCI is mapped to N carriers, and the TDRA index indicated by the TDRA field in the DCI is mapped to N groups of time domain resource indication information, the DCI is used to schedule PDSCHs on N carriers, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1;

[0261] In the case where a CIF index indicated by a CIF field in a DCI is mapped to one carrier, and a TDRA index indicated by a TDRA field in the DCI is mapped to a set of time domain resource indication information, the DCI is used to schedule a PDSCH on one carrier.

[0262] In one embodiment, the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI.

[0263] In one embodiment, the CIF field in the DCI is used to indicate the CIF index, and the CIF index is mapped to a carrier with a CIF index of i; when the TDRA index indicated in the TDRA field in the DCI is mapped to N groups of time domain resource indication information, the DCI schedules PDSCH on N carriers with CIF indexes of imodM, (i+1)modM...(i+N-1)modM, and one PDSCH is scheduled on each carrier; M is the total number of carriers that can be scheduled by the DCI, N is a positive integer greater than 1, and mod is a modulo operation.

[0264] In one embodiment, the DCI indicates two CIF fields, each CIF field indicates a CIF index, and each CIF index is mapped to a carrier.

[0265] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a CIF index and two groups of carriers, the first group of carriers includes one carrier, and the second group of carriers includes at least one carrier.

[0266] In one embodiment, when the CIF index corresponds to the first group of carriers, the DCI is used to schedule the PDSCH on a carrier in the first group of carriers mapped by the CIF index;

[0267] In the case where the CIF index corresponds to the second group of carriers, the DCI is used to schedule a PDSCH on at least one carrier mapped by the CIF index in the second group of carriers, and one PDSCH is scheduled on each carrier.

[0268] In one embodiment, the PDSCH configuration information includes: time domain resource indication information;

[0269] In the time domain resource indication information, K 0 When K is equal to 0, 0 It is used to indicate the first time slot between the scheduling time of PDSCH on each carrier and the corresponding physical downlink control channel PDCCH that meets the preset time.

[0270] Figure 5 is a structural block diagram of another information scheduling device provided in an embodiment of the present application. Figure 5 As shown, the information scheduling device in this embodiment includes: a first sending module 410 , a second determining module 420 and a second sending module 430 .

[0271] A first sending module 410 is configured to send predetermined physical downlink shared channel PDSCH configuration information to a first communication node;

[0272] A second determination module 420 is configured to determine downlink control information DCI for scheduling a PDSCH on at least one carrier according to the PDSCH configuration information;

[0273] The second sending module 430 is configured to send the downlink control information to the first communication node.

[0274] The information scheduling device provided in this embodiment is configured to implement Figure 2 The information scheduling method applied to the second communication node in the illustrated embodiment is similar to the implementation principle and technical effect of the information scheduling device provided in this embodiment, and will not be described in detail here.

[0275] In one embodiment, the PDSCH configuration information includes: the total number of carriers M that can be scheduled by DCI; a radio network temporary identifier RNTI used to indicate that DCI currently schedules PDCSH on one or N carriers, where N is a positive integer greater than 1 and N is less than or equal to M.

[0276] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a carrier indicator field CIF index and a carrier, and each CIF index is mapped to at least one carrier.

[0277] In one embodiment, the CIF field in the DCI indicates a CIF index, and the carrier mapped by the CIF index is the carrier on which the DCI currently schedules PDCSH; when the CIF index indicated by the CIF field is mapped to N carriers, the DCI is used to schedule PDCSH on N carriers, and schedule one PDSCH on each carrier, where N is a positive integer greater than 1; when the CIF index indicated by the CIF field is mapped to one carrier, the DCI is used to schedule PDCSH on one carrier.

[0278] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a time domain resource allocation TDRA index and at least one set of time domain resource indication information, each set of time domain resource indication information includes: a time slot offset K 0 , starting length indication value SLIV and PDSCH mapping type.

[0279] In one embodiment, each set of time domain resource indication information includes the same K 0 .

[0280] In one embodiment, each set of time domain resource indication information includes the same SLIV.

[0281] In one embodiment, the PDSCH configuration information further includes: a mapping relationship between each group of time domain resource indication information and a carrier.

[0282] In one embodiment, the TDRA field in the DCI indicates a TDRA index; when the TDRA index is mapped to N groups of time domain resource indication information, the DCI is used to schedule PDSCH on carriers corresponding to the N groups of time domain resource indication information, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1; when the TDRA index is mapped to a group of time domain resource indication information, the DCI is used to schedule PDSCH on carriers corresponding to a group of time domain resource indication information.

[0283] In one embodiment, the CIF field and the TDRA field in the DCI jointly indicate the TDRA index.

[0284] In one embodiment, the CIF field in the DCI indicates a CIF index, and the CIF index is mapped to at least one carrier; the TDRA field in the DCI indicates a TDRA index; when the CIF index indicated by the CIF field in the DCI is mapped to N carriers, and the TDRA index indicated by the TDRA field in the DCI is mapped to N groups of time domain resource indication information, the DCI is used to schedule PDSCH on N carriers, and one PDSCH is scheduled on each carrier, where N is a positive integer greater than 1; when the CIF index indicated by the CIF field in the DCI is mapped to one carrier, and the TDRA index indicated by the TDRA field in the DCI is mapped to a group of time domain resource indication information, the DCI is used to schedule PDSCH on one carrier.

[0285] In one embodiment, the number of groups of time domain resource indication information mapped by the TDRA index indicated in the TDRA field in the DCI is equal to the number of carriers mapped by the CIF index indicated in the CIF field in the DCI.

[0286] In one embodiment, a CIF field in a DCI is used to indicate a CIF index, and the CIF index is mapped to a carrier with a CIF index i;

[0287] When the TDRA index indicated in the TDRA domain in the DCI is mapped to N groups of time domain resource indication information, the DCI schedules PDSCH on N carriers whose CIF indexes are imodM, (i+1)modM...(i+N-1)modM, and one PDSCH is scheduled on each carrier; M is the total number of carriers that can be scheduled by the DCI, N is a positive integer greater than 1, and mod is a modulo operation.

[0288] In one embodiment, the DCI indicates two CIF fields, each CIF field indicates a CIF index, and each CIF index is mapped to a carrier.

[0289] In one embodiment, the PDSCH configuration information includes: a mapping relationship between a CIF index and two groups of carriers, the first group of carriers includes one carrier, and the second group of carriers includes at least one carrier.

[0290] In one embodiment, when the CIF index corresponds to the first group of carriers, the DCI is used to schedule the PDSCH on a carrier in the first group of carriers mapped by the CIF index;

[0291] In the case where the CIF index corresponds to the second group of carriers, the DCI is used to schedule a PDSCH on at least one carrier mapped by the CIF index in the second group of carriers, and one PDSCH is scheduled on each carrier.

[0292] In one embodiment, the PDSCH configuration information includes: time domain resource indication information; in the time domain resource indication information, K0 When K is equal to 0, 0 It is used to indicate the first time slot between the scheduling time of PDSCH on each carrier and the corresponding physical downlink control channel PDCCH that meets the preset time.

[0293] Figure 6 Schematic diagram of a device provided in an embodiment of the present application. Figure 6 As shown, the device provided by the present application includes: a processor 510 and a memory 520. The number of processors 510 in the device can be one or more. Figure 6 In the example, a processor 510 is used. The number of memories 520 in the device may be one or more. Figure 6 A memory 520 is taken as an example. The processor 510 and the memory 520 of the device can be connected via a bus or other means. Figure 6 In the embodiment, the device is a first communication node.

[0294] The memory 520, as a computer-readable storage medium, may be configured to store software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the device of any embodiment of the present application (e.g., the first receiving module, the second receiving module, and the first determining module in the information scheduling device). The memory 520 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the device, etc. In addition, the memory 520 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 520 may further include a memory remotely arranged relative to the processor 510, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0295] The device provided above can be configured to execute the information scheduling method applied to the first communication node provided in any of the above embodiments, and has corresponding functions and effects.

[0296] In the case where the device is a second communication node, the device provided above can be configured to execute the information scheduling method applied to the second communication node provided in any of the above embodiments, and have corresponding functions and effects.

[0297] An embodiment of the present application also provides a storage medium containing computer executable instructions, which, when executed by a computer processor, are used to execute an information scheduling method applied to a first communication node, the method comprising: receiving physical downlink shared channel PDSCH configuration information sent by a second communication node; receiving downlink control information DCI sent by the second communication node; and determining scheduling information of PDSCH on at least one carrier based on the PDSCH configuration information and the DCI.

[0298] An embodiment of the present application also provides a storage medium containing computer executable instructions, which, when executed by a computer processor, are used to execute an information scheduling method applied to a second communication node, the method comprising: sending predetermined physical downlink shared channel PDSCH configuration information to a first communication node; determining downlink control information DCI for scheduling PDSCH on at least one carrier based on the PDSCH configuration information; and sending the downlink control information to the first communication node.

[0299] It will be appreciated by those skilled in the art that the term user equipment encompasses any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car-mounted mobile station.

[0300] In general, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, microprocessor or other computing device, although the present application is not limited thereto.

[0301] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0302] The block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. A computer program may be stored in a memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital versatile discs (DVD) or compact disks (CD)), etc. Computer-readable media may include non-transient storage media. A data processor may be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FGPAs) and a processor based on a multi-core processor architecture.

Claims

1. A wireless communication method, include: The user terminal receives the physical downlink shared channel PDSCH configuration information and downlink control information DCI, The PDSCH configuration information includes a mapping relationship between multiple carrier indicator field CIF indexes and multiple carriers. Wherein, each CIF index is mapped to at least one carrier, and wherein the number of carriers mapped to each CIF index is limited; and Scheduling information of PDSCHs on multiple carriers is determined according to the PDSCH configuration information and the DCI.

2. The method according to claim 1, in, The number of multiple carriers scheduled by the DCI is limited.

3. The method according to claim 1 or 2, in, The DCI is restricted to scheduling two carriers per CIF index.

4. The method according to claim 1 or 2, in, The scheduling information includes time domain resource indication information, a carrier for scheduling PDSCH, and a carrier indication field CIF index for scheduling PDSCH.

5. The method according to claim 1 or 2, in, The CIF field in the DCI indicates a CIF index, and the carrier mapped by the CIF index is a carrier of the DCI-scheduled PDCSH.

6. The method according to claim 5, in, In the case where the CIF index indicated by the CIF domain is mapped to N carriers, the DCI is used to schedule PDCSH on the N carriers, and one PDSCH is scheduled on each of the N carriers, where N is a positive integer greater than 1.

7. A wireless communication device, comprising a memory and one or more processors, wherein the processor is configured to read instructions from the memory to implement the following operations: Receive physical downlink shared channel PDSCH configuration information and downlink control information DCI, in, The PDSCH configuration information includes a mapping relationship between multiple carrier indicator field CIF indexes and multiple carriers. Wherein, each CIF index is mapped to at least one carrier, and wherein the number of carriers mapped to each CIF index is limited; and Scheduling information of PDSCHs on multiple carriers is determined according to the PDSCH configuration information and the DCI.

8. The device according to claim 7, in, The number of multiple carriers scheduled by the DCI is limited.

9. The device according to claim 7 or 8, in, The DCI is restricted to scheduling two carriers per CIF index.

10. The device according to claim 7 or 8, in, The scheduling information includes time domain resource indication information, a carrier for scheduling PDSCH, and a carrier indication field CIF index for scheduling PDSCH.

11. The device according to claim 7 or 8, in, The CIF field in the DCI indicates a CIF index, and the carrier mapped by the CIF index is a carrier of the DCI-scheduled PDCSH.

12. The device according to claim 11, in, In the case where the CIF index indicated by the CIF domain is mapped to N carriers, the DCI is used to schedule PDCSH on the N carriers, and one PDSCH is scheduled on each of the N carriers, where N is a positive integer greater than 1.

13. A non-transitory computer-readable program storage medium having codes stored thereon, which, when executed by one or more processors, cause the processors to perform the following operations: Receive physical downlink shared channel PDSCH configuration information and downlink control information DCI, in, The PDSCH configuration information includes a mapping relationship between multiple carrier indicator field CIF indexes and multiple carriers. Wherein, each CIF index is mapped to at least one carrier, and wherein the number of carriers mapped to each CIF index is limited; and Scheduling information of PDSCHs on multiple carriers is determined according to the PDSCH configuration information and the DCI.

14. The non-transitory computer-readable program storage medium according to claim 13, in, The number of multiple carriers scheduled by the DCI is limited.

15. The non-transitory computer-readable program storage medium according to claim 13 or 14, in, The DCI is restricted to scheduling two carriers per CIF index.

16. The non-transitory computer-readable program storage medium according to claim 13 or 14, in, The scheduling information includes time domain resource indication information, a carrier for scheduling PDSCH, and a carrier indication field CIF index for scheduling PDSCH.

17. The non-transitory computer-readable program storage medium according to claim 13 or 14, in, The CIF field in the DCI indicates a CIF index, and the carrier mapped by the CIF index is a carrier of the DCI-scheduled PDCSH.

18. The non-transitory computer-readable program storage medium according to claim 17, in, In the case where the CIF index indicated by the CIF domain is mapped to N carriers, the DCI is used to schedule PDCSH on the N carriers, and one PDSCH is scheduled on each of the N carriers, where N is a positive integer greater than 1.

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