A method and apparatus used in a node for wireless communication

Abstract

The application discloses a method and device used in a node for wireless communication. A first node firstly receives first information used for determining a target carrier; then detects first signaling in a first alternative resource set; when the first signaling is detected, operates a first signal in the first carrier, the first signaling is used for determining time-frequency resources occupied by the first signal; the first signaling carries a first identifier used for identifying the first carrier; the first alternative resource set comprises an integer number of alternative resource groups, the first signaling occupies one alternative resource group in the first alternative resource set; a target time-frequency resource pool is used for determining a target identifier, the target identifier is used for determining the first alternative resource set. The application optimizes a blind detection mode and improves system performance by configuring different carrier indication fields for the first carrier.

Description

[0001] This application is a divisional application of the following original application:

[0002] --The original application was filed on January 21, 2020.

[0003] --Original application number: 202010069306.8

[0004] --Original application title: A method and apparatus used in a node for wireless communication Technical Field

[0005] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to transmission methods and apparatus in cross-carrier scheduling in wireless communication. Background Technology

[0006] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. In traditional LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems, carrier aggregation technology was introduced to improve transmission bandwidth and increase the capacity of PDCCH (Physical Downlink Control Channel). This means that a scheduled carrier can schedule another carrier through cross-carrier scheduling. Considering system stability and feasibility, the primary cell (PCell) can only be self-scheduled.

[0007] In the evolution of 5G and subsequent Release 17, DSS (Dynamic Spectrum Sharing) technology enables the sharing of LTE and 5G spectrum; thus, when the primary cell of a terminal is an NR carrier and the secondary cell (SCell) is an LTE carrier, the NR carrier can be scheduled through the LTE carrier. At the RAN (Radio Access Network) #86 plenary meeting, it was decided to study DSS-related technologies and begin standardization work. Summary of the Invention

[0008] In the DSS (Distributed Signal Processing) project, there will be a scenario where SCell schedules PCell. In traditional CA (Carrier Aggregation), the PCell, as the primary cell of the terminal, needs to have the highest robustness. Correspondingly, when scheduling PCells in blind detection, the positions of the corresponding PDCCH candidates are also the best performing positions. At the same time, if a secondary cell can schedule a primary cell, the performance of the secondary cell itself will obviously be better. To address these issues, how to configure the positions of PDCCH candidates for different cells on the same time-frequency resource will need to be redesigned.

[0009] This application provides a solution for the novel scenarios described above in DSS. It should be noted that the DSS scenario in the above problem description is merely an example of an application scenario for the solution provided in this application; this application is also applicable to scenarios such as unlicensed frequency spectrum, achieving similar technical effects as in the DSS scenario. Similarly, this application is also applicable to scenarios such as networks with cellular networks or IoT devices, to achieve similar technical effects. Furthermore, adopting a unified solution for different scenarios helps reduce hardware complexity and cost.

[0010] To address the aforementioned problems, this application provides a solution. It should be noted that, unless otherwise specified, the embodiments and features described in the first node of this application can be applied to the second node, and vice versa. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other.

[0011] This application discloses a method for a first node in wireless communication, comprising:

[0012] Receive first information, which is used to determine the target carrier;

[0013] Detect the first signaling in the first set of alternative resources;

[0014] When the first signaling is detected, a first signal is received in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier;

[0015] Wherein, the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0016] This application discloses a method for a first node in wireless communication, comprising:

[0017] Receive first information, which is used to determine the target carrier;

[0018] Detect the first signaling in the first set of alternative resources;

[0019] When the first signaling is detected, a first signal is transmitted in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier;

[0020] Wherein, the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0021] As an example, the advantage of the above method is that when the secondary cell can schedule the primary cell and self-schedule, it establishes a connection between the position of the PDCCH candidate of the data channel on the primary cell and the position of the time-frequency resource where the PDCCH candidate is located, thereby flexibly configuring the position of the PDCCH candidate.

[0022] As an example, another advantage of the above method is that the position of the PDCCH candidate corresponding to CIF equal to 0 can be used by both the PDCCH candidate of the primary cell and the PDCCH candidate of the secondary cell. The above distinction is staggered by time and frequency resources to ensure that there is no ambiguity on the first node side.

[0023] As an example, another advantage of the above method is that: if the secondary cell that can be scheduled for the primary cell is defined as the first secondary cell, then the scheduling for the first secondary cell still needs to ensure its robustness; under the above assumption, the base station can use TDM (Time-Division Duplex) to implement the scheduling for the primary cell and the scheduling for the first secondary cell, both of which use the PDCCH candidate position corresponding to CIF equal to 0.

[0024] According to one aspect of this application, it includes:

[0025] Receive the second message;

[0026] The second information is used to indicate a first integer and a second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool.

[0027] As an example, the advantage of the above method is that: the first integer and the second integer are configured for the first carrier, the first integer is used in the first time-frequency resource pool, and the second integer is used in the second time-frequency resource pool; thus, the CIF value used in PDCCH blind detection changes with the time-frequency resources, making it more flexible.

[0028] According to one aspect of this application, the target carrier is a secondary carrier, and the target carrier can be used to schedule the primary carrier.

[0029] According to one aspect of this application, the time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

[0030] As an example, the advantage of the above method is that it ensures that the CIF value of the first node used for blind detection of PDCCH at a given time is determined by TDM.

[0031] According to one aspect of this application, the second information and the first information belong to two different domains in a single signaling system.

[0032] According to one aspect of this application, the frequency domain resources occupied by the signal carrying the first information belong to the second carrier, the first information is used to determine a first index, the first index being the index of the target carrier, the first information is used to determine that the target carrier and the second carrier are different, and the target carrier schedules the second carrier across carriers.

[0033] As an example, the characteristic of the above method is that the first information is still transmitted on the main cell to ensure transmission quality.

[0034] According to one aspect of this application, it includes:

[0035] Receive third-party information;

[0036] The third information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

[0037] This application discloses a method for a second node in wireless communication, comprising:

[0038] Send first information, which is used to determine the target carrier;

[0039] Send the first signaling to the first set of alternative resources;

[0040] A first signal is transmitted in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier.

[0041] Wherein, the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0042] This application discloses a method for a second node in wireless communication, comprising:

[0043] Send first information, which is used to determine the target carrier;

[0044] Send the first signaling to the first set of alternative resources;

[0045] A first signal is received in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier.

[0046] Wherein, the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0047] According to one aspect of this application, it includes:

[0048] Send a second message;

[0049] The second information is used to indicate a first integer and a second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool.

[0050] According to one aspect of this application, the target carrier is a secondary carrier, and the target carrier can be used to schedule the primary carrier.

[0051] According to one aspect of this application, the time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

[0052] According to one aspect of this application, the second information and the first information belong to two different domains in a single signaling system.

[0053] According to one aspect of this application, the frequency domain resources occupied by the signal carrying the first information belong to the second carrier, the first information is used to determine a first index, the first index being the index of the target carrier, the first information is used to determine that the target carrier and the second carrier are different, and the target carrier schedules the second carrier across carriers.

[0054] According to one aspect of this application, it includes:

[0055] Send a third message;

[0056] The third information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

[0057] This application discloses a first node for wireless communication, characterized by comprising:

[0058] A first receiver receives first information, which is used to determine a target carrier.

[0059] The second receiver detects the first signaling in the first set of alternative resources;

[0060] The first transceiver, when the first signaling is detected, receives a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier;

[0061] Wherein, the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0062] This application discloses a first node for wireless communication, characterized by comprising:

[0063] A first receiver receives first information, which is used to determine a target carrier.

[0064] The second receiver detects the first signaling in the first set of alternative resources;

[0065] When the first signaling is detected, the first transceiver transmits a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier;

[0066] Wherein, the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0067] This application discloses a second node for wireless communication, characterized by comprising:

[0068] The first transmitter sends first information, which is used to determine the target carrier.

[0069] The second transmitter sends the first signaling from the first set of alternative resources;

[0070] The second transceiver transmits a first signal in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier.

[0071] Wherein, the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0072] This application discloses a second node for wireless communication, characterized by comprising:

[0073] The first transmitter sends first information, which is used to determine the target carrier.

[0074] The second transmitter sends the first signaling from the first set of alternative resources;

[0075] The second transceiver receives the first signal in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier.

[0076] Wherein, the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0077] As an example, compared with conventional solutions, this application has the following advantages:

[0078] - When the secondary cell can schedule the primary cell and self-schedule, it establishes a connection between the position of the PDCCH candidate of the data channel on the primary cell and the position of the time-frequency resource where the PDCCH candidate is located, thereby flexibly configuring the position of the PDCCH candidate;

[0079] The position of the PDCCH candidate corresponding to CIF equal to 0 can be given to both the PDCCH candidate of the primary scheduling cell and the PDCCH candidate of the secondary scheduling cell. The above distinction is staggered by time and frequency resources to ensure that there is no ambiguity on the first node side.

[0080] -. If the secondary cell that can schedule the primary cell is defined as the first secondary cell, then the scheduling of the first secondary cell still needs to ensure its robustness. Under the above assumption, the base station can use TDM (Time-Division Duplex) to implement the scheduling of the primary cell and the scheduling of the first secondary cell, both of which use the position of the PDCCH candidate corresponding to CIF equal to 0. Attached Figure Description

[0081] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0082] Figure 1 A flowchart illustrating the processing of a first node according to an embodiment of this application is shown;

[0083] Figure 2 A schematic diagram of a network architecture according to an embodiment of this application is shown;

[0084] Figure 3 A schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application is shown;

[0085] Figure 4 A schematic diagram of a first communication device and a second communication device according to an embodiment of this application is shown;

[0086] Figure 5 A flowchart of a first signal according to an embodiment of this application is shown;

[0087] Figure 6 A flowchart of a first signal according to another embodiment of this application is shown;

[0088] Figure 7 A schematic diagram of a target time-frequency resource pool according to an embodiment of this application is shown;

[0089] Figure 8A schematic diagram of a target carrier and a first carrier according to an embodiment of this application is shown;

[0090] Figure 9 A schematic diagram of a first set of alternative resources according to an embodiment of this application is shown;

[0091] Figure 10 A structural block diagram for a first node according to an embodiment of this application is shown;

[0092] Figure 11 A structural block diagram for a second node according to an embodiment of this application is shown;

[0093] Figure 12 A schematic diagram of second information according to one embodiment of this application is shown. Detailed Implementation

[0094] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0095] Example 1

[0096] Example 1 illustrates a processing flowchart for a first node, as shown in the attached diagram. Figure 1 As shown. In the appendix Figure 1 In the diagram 100, each box represents a step. In Embodiment 1, the first node in this application receives first information in step 101, which is used to determine a target carrier; detects first signaling in a first set of alternative resources in step 102; and operates a first signal in the first carrier when the first signaling is detected in step 103, whereby the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier.

[0097] In Example 1, the operation is receiving or transmitting; the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between the first integer and the second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0098] As an example, the above sentence "the operation is receiving, or the operation is sending" includes the following meaning: the operation is one of receiving and sending.

[0099] As an example, the above sentence "the operation is receiving, or the operation is sending" includes the following meaning: the first signal can be transmitted via a downlink channel or via an uplink channel.

[0100] As an example, when the first signaling is detected by the first node, the first node receives the first signal in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier.

[0101] As an example, when the first signaling is detected by the first node, the first node transmits the first signal in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier.

[0102] As an example, the first signaling indicates the time-frequency position occupied by the first signal in the first carrier.

[0103] As an example, the first information is carried by RRC (Radio Resource Control) signaling.

[0104] As one example, the first information is carried by higher-layer signaling.

[0105] As an example, the IE (Information Element) carrying the first information is CrossCarrierSchedulingConfig in TS38.331.

[0106] As a sub-implementation of this embodiment, the first information corresponds to the schedulingCellId part in the CrossCarrierSchedulingConfig.

[0107] As an example, the phrase "the first information is used to determine the target carrier" means that the first information is used to determine that the target carrier can be used to schedule the first carrier.

[0108] As an example, the phrase "the first information is used to determine the target carrier" means that the first information is used to determine the Carrier Indicator Field (CIF) value used in the scheduling signaling when the target carrier is scheduled across other carriers.

[0109] As an example, the phrase "the first information is used to determine the target carrier" means that the first information is used to determine the value of the carrier indication field used when the target carrier is scheduled by the target carrier.

[0110] As one example, the target carrier is an SCC (Secondary Component Carrier).

[0111] As an example, the carrier occupied by the secondary cell of the first node is the target carrier.

[0112] As one example, the target carrier corresponds to the secondary cell of the first node.

[0113] As an example, the ServCellIndex used by the target carrier is greater than 0.

[0114] As an example, the ServCellId used by the target carrier is greater than 0.

[0115] As an example, the target carrier is PCell, and the first carrier is SCell.

[0116] As an example, the ServCellID corresponding to the target carrier is equal to 0, and the ServCellID corresponding to the first carrier is greater than 0.

[0117] As an example, the first set of candidate resources includes a positive integer number of REs (Resource Elements).

[0118] As one embodiment, the first set of alternative resources includes a positive integer number of PDCCH Candidates.

[0119] As an example, the first set of alternative resources is a PDCCH searchspace set.

[0120] As one example, the detection includes blind detection (Blind Decoding).

[0121] As one example, the detection includes energy detection.

[0122] As an example, the detection includes sequence detection.

[0123] As one embodiment, the detection includes receiving.

[0124] As one example, the detection includes decoding.

[0125] As an example, the physical layer channel carrying the first signaling is the PDCCH.

[0126] As an example, the first signaling is dynamic signaling.

[0127] As an example, the first signaling is scheduling signaling.

[0128] As an example, the first node does not know which REs in the first candidate set the first signaling uses before receiving the first signaling.

[0129] As an example, the operation is to receive, and the physical layer channel carrying the first signal is PDSCH (Physical Downlink Shared Channel).

[0130] As an example, the operation is transmission, and the physical layer channel carrying the first signal is PUSCH (Physical Uplink Shared Channel).

[0131] As one embodiment, the first signaling is a downlink grant (DL grant), and the operation is receiving.

[0132] As one embodiment, the first signaling is an uplink grant (UL Grant), and the operation is transmission.

[0133] As an example, the phrase "the first signaling is detected" means that the CRC (Cyclic Redundancy Check) verification carried by the first signaling has passed.

[0134] As an example, the CRC carried by the first signaling is scrambled by the C-RNTI (CellRadio Network Temporary Identifier) ​​of the first node.

[0135] As an example, the phrase "the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier" means that the first signaling indicates a first time-frequency resource set, and the frequency domain resources occupied by the first time-frequency resource set belong to the first carrier.

[0136] As an example, the phrase "the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier" means that the first signaling instructs the first node to receive the first signal in the first carrier through the first identifier.

[0137] As an example, the phrase "the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier" means that the first signaling instructs the first node to transmit the first signal in the first carrier through the first identifier.

[0138] As an example, the first identifier is a non-negative integer indicated by the carrier indication field in the first signaling.

[0139] As an example, the first identifier is a positive integer.

[0140] As an example, the first identifier is a non-negative integer.

[0141] As an example, the first identifier is the value of the carrier indication field carried by the first signaling.

[0142] As an example, the phrase "the first identifier is used to identify the first carrier" means that the first identifier is used to identify the first carrier from a set of candidate carriers, the set of candidate carriers including Q1 carriers.

[0143] As a sub-implementation of this embodiment, Q1 is a positive integer not greater than 8.

[0144] As a sub-example of this embodiment, Q1 equals 8.

[0145] As an example, the first carrier is a PCC (Primary Component Carrier).

[0146] As an example, the carrier occupied by the primary cell of the first node is the first carrier.

[0147] As one example, the first carrier corresponds to the primary cell of the first node.

[0148] As an example, the ServCellIndex used by the first carrier is equal to 0.

[0149] As an example, the ServCellId used by the first carrier is equal to 0.

[0150] As an example, the first candidate resource set includes K1 candidate resource groups, where K1 is a positive integer greater than 1, and the K1 candidate resource groups correspond to K1 PDCCH candidates respectively.

[0151] As an example, the target time-frequency resource pool is a CORESET (Control Resource Set).

[0152] As an example, any candidate resource group in the first candidate resource set includes a positive integer number of resource elements (REs).

[0153] As an example, the first set of alternative resources includes K1 alternative resource groups, and the positions of the K1 alternative resource groups in the target time-frequency resource pool are related to the target identifier.

[0154] As an example, the phrase "whether the target time-frequency resource pool and the first time-frequency resource pool are the same" being used to determine the target identifier from between a first integer and a second integer means that: the target time-frequency resource pool is the same as the first time-frequency resource pool, and the target identifier is equal to the first integer; or the target time-frequency resource pool is the same as the second time-frequency resource pool, and the target identifier is equal to the second integer.

[0155] As a sub-implementation of this embodiment, the first integer is equal to 0, and the second integer is greater than 0.

[0156] As a sub-example of this embodiment, when the first carrier is equal to the target carrier, the first integer is equal to 0, and the second integer is greater than 0.

[0157] As a sub-example of this embodiment, when the first carrier is equal to the target carrier, the first integer is equal to 0 and the second integer is equal to 1.

[0158] As a sub-example of this embodiment, when the first carrier is equal to the target carrier, the first integer is equal to 0, and the second integer is equal to the ServCellIndex of the target carrier.

[0159] As a sub-example of this embodiment, when the first carrier is equal to the target carrier, the first integer is equal to 0, and the second integer is equal to the ServCellId of the target carrier.

[0160] As an example, the first time-frequency resource pool is a CORESET.

[0161] As an example, the second time-frequency resource pool is a CORESET.

[0162] As an example, any one of the positive integer number of candidate resource groups included in the first candidate resource set is a PDCCH candidate.

[0163] As an example, any one of the positive integer number of candidate resource groups included in the first candidate resource set consists of a positive integer number of CCEs (Control Channel Elements).

[0164] As an example, the meaning of the above phrase, "the target identifier is used to determine the first candidate resource set from the target time-frequency resource pool," includes: the first candidate resource set includes K1 candidate resource groups, each of the K1 candidate resource groups occupies a positive integer number of CCEs, and the target identifier is used to determine the position of the positive integer number of CCEs occupied by each of the K1 candidate resource groups from the target time-frequency resource pool.

[0165] As a sub-example of this embodiment, the relationship between the target identifier and the positions of the positive integer number of CCEs occupied by any of the K1 candidate resource groups is determined by the following formula:

[0166]

[0167] in, The formula above is used to calculate the identifier of one of the K1 candidate resource groups. The candidate resource group includes indexes of CCEs with aggregation level L; s represents the target time-frequency resource pool, which is associated with the control signaling set (CORESET) p. n represents the index of the time slot to which the time-domain resources included in the first set of candidate resources belong. CI The value representing the target identifier, Represents a non-negative integer related to the identifier of the first node in this application; i is an integer not less than 0 and less than L, N CCE,p This represents the number of Control Code Equivalents (CCEs) in the control signaling set p, where the CCEs range from 0 to N. CCE,p -1 index, It is not less than 0 and less than non-negative integers, This represents the number of PDCCH candidates with an aggregation level of L configured for the first carrier in the target time-frequency resource pool s; This represents all configurations of aggregation level L in the target time-frequency resource pool s, with n... CI of The maximum value.

[0168] Example 2

[0169] Example 2 illustrates a schematic diagram of the network architecture, as shown in the attached diagram. Figure 2 As shown.

[0170] Figure 2A diagram illustrating the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems is provided. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable term. EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, EPC (Evolved Packet Core) / 5G-CN (5G-Core Network) 210, HSS (Home Subscriber Server) 220, and Internet service 230. EPS may interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the diagram, EPS provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination to UE 201. gNB 203 can connect to other gNBs 204 via the Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), TRP (Transmitter Receiver Node), or some other suitable term. gNB 203 provides UE 201 with access to EPC / 5G-CN 210. Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB203 connects to EPC / 5G-CN 210 via the S1 / NG interface.The EPC / 5G-CN 210 includes the MME (Mobility Management Entity), AMF (Authentication Management Field), and UPF (User Plane Function) 211, other MMEs, AMFs, and UPFs 214, the S-GW (Service Gateway) 212, and the P-GW (Packet Data Network Gateway) 213. The MME / AMF / UPF 211 is the control node that handles signaling between the UE 201 and the EPC / 5G-CN 210. Generally, the MME / AMF / UPF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW 212, which is itself connected to the P-GW 213. The P-GW 213 provides UE IP address allocation and other functions. The P-GW 213 is connected to the Internet service 230. Internet services 230 include operator-compliant Internet protocol services, which may specifically include the Internet, intranets, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0171] As an example, the UE201 corresponds to the first node in this application.

[0172] As an example, the UE201 is a terminal that supports cross-carrier scheduling.

[0173] As an example, the UE201 can be scheduled simultaneously on multiple carriers.

[0174] As an example, gNB203 corresponds to the second node in this application.

[0175] As one example, the gNB203 supports cross-carrier scheduling.

[0176] As one example, the gNB203 can be simultaneously scheduled for a terminal on multiple carriers.

[0177] As an example, the air interface between the UE201 and the gNB203 is a Uu interface.

[0178] As an example, the wireless link between the UE201 and the gNB203 is a cellular link.

[0179] Example 3

[0180] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first communication node device (UE, gNB, or RSU in V2X) and the second communication node device (gNB, UE, or RSU in V2X) is illustrated using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. Layer 1 will be referred to herein as PHY 301. Layer 2 (L2 layer) 305 sits above PHY 301 and is responsible for the link between the first and second communication node devices via PHY 301. Layer 2 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets and supports cross-cell mobility between the first and second communication node devices. RLC sublayer 303 provides upper-layer data packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between the logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among the first communication node devices. MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second and first communication node devices. The radio protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first and second communication node devices in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355 and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS streams and data radio bearers (DRBs) to support service diversity. Although not illustrated, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, server, etc.).

[0181] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the first node in this application.

[0182] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the second node in this application.

[0183] As an example, the PDCP304 of the second communication node device is used to generate the schedule of the first communication node device.

[0184] As an example, the PDCP354 of the second communication node device is used to generate the schedule of the first communication node device.

[0185] As an example, the first information is generated in the MAC352 or the MAC302.

[0186] As an example, the first information is generated in the RRC306.

[0187] As an example, the first signaling is generated in the PHY301 or the PHY351.

[0188] As an example, the first signaling is generated in MAC352 or MAC302.

[0189] As an example, the first signal is generated in the RRC306.

[0190] As an example, the first signal is generated in the PHY301 or the PHY351.

[0191] As an example, the first signal is generated by the MAC352 or the MAC302.

[0192] As an example, the second information is generated in MAC352 or MAC302.

[0193] As an example, the second information is generated in the RRC306.

[0194] As an example, the third information is generated in MAC352 or MAC302.

[0195] As an example, the third information is generated in the RRC306.

[0196] Example 4

[0197] Example 4 shows schematic diagrams of a first communication device and a second communication device according to this application, as shown in the appendix. Figure 4 As shown. Figure 4 This is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in the access network.

[0198] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0199] The second communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0200] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 layer functionality. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-Phase Shift Keying (M-PSK), M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently uses inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmitter processor 471 into an radio frequency stream, which is then provided to different antennas 420.

[0201] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the first communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper-layer data and control signals transmitted by the second communication device 410 over the physical channel. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0202] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0203] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper-layer data packets from the UE 450. Upper-layer packets from the controller / processor 475 can be provided to the core network.

[0204] As one embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 at least: receives first information, the first information being used to determine a target carrier; detects first signaling in a first set of alternative resources; when the first signaling is detected, receives a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carries a first identifier, the first identifier being used to identify the first carrier; the first set of alternative resources includes a positive integer number of alternative resource groups, and the first signaling occupies... The first alternative resource set is used; any alternative resource group in the first alternative resource set belongs to the target time-frequency resource pool, and the target time-frequency resource pool includes time-frequency resources other than those included in the first alternative resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, and the target identifier is used to determine the first alternative resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from the first integer and the second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0205] As one embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 at least: receives first information, the first information being used to determine a target carrier; detects first signaling in a first set of alternative resources; when the first signaling is detected, transmits a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carries a first identifier, the first identifier being used to identify the first carrier; the first set of alternative resources includes a positive integer number of alternative resource groups, and the first signaling occupies... The first alternative resource set is used; any alternative resource group in the first alternative resource set belongs to the target time-frequency resource pool, and the target time-frequency resource pool includes time-frequency resources other than those included in the first alternative resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, and the target identifier is used to determine the first alternative resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from the first integer and the second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0206] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: receiving first information, the first information being used to determine a target carrier; detecting first signaling in a first set of alternative resources; when the first signaling is detected, receiving a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carrying a first identifier, the first identifier being used to identify the first carrier; the first set of alternative resources including a positive integer number of alternative resource groups, the first signaling occupying one alternative resource in the first set of alternative resources. The target time-frequency resource pool is defined as follows: any one of the candidate resource groups in the first candidate resource set belongs to the target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0207] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: receiving first information, the first information being used to determine a target carrier; detecting first signaling in a first set of alternative resources; when the first signaling is detected, transmitting a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carrying a first identifier, the first identifier being used to identify the first carrier; the first set of alternative resources including a positive integer number of alternative resource groups, the first signaling occupying one alternative resource in the first set of alternative resources. The target time-frequency resource pool is defined as follows: any one of the candidate resource groups in the first candidate resource set belongs to the target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0208] As one embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 at least: transmits first information, the first information being used to determine a target carrier; transmits first signaling in a first set of alternative resources; transmits a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carries a first identifier, the first identifier being used to identify the first carrier; the first set of alternative resources includes a positive integer number of alternative resource groups, the first signaling occupying one alternative resource group in the first set of alternative resources; any alternative resource group in the first set of alternative resources belongs to a target time-frequency resource pool, the target... The target time-frequency resource pool includes time-frequency resources other than those in the candidate resource group included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0209] As one embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 includes at least: transmitting first information, the first information being used to determine a target carrier; transmitting first signaling in a first set of alternative resources; receiving a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carrying a first identifier, the first identifier being used to identify the first carrier; the first set of alternative resources including a positive integer number of alternative resource groups, the first signaling occupying one alternative resource group in the first set of alternative resources; any alternative resource group in the first set of alternative resources belonging to a target time-frequency resource pool, the target... The target time-frequency resource pool includes time-frequency resources other than those in the candidate resource group included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0210] As one embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, which, when executed by at least one processor, generates actions including: transmitting first information, the first information being used to determine a target carrier; transmitting first signaling in a first set of alternative resources; transmitting a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carrying a first identifier, the first identifier being used to identify the first carrier; the first set of alternative resources including a positive integer number of alternative resource groups, the first signaling occupying one alternative resource group in the first set of alternative resources; the first... Any candidate resource group in the candidate resource set belongs to the target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0211] As one embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, which, when executed by at least one processor, generates actions including: transmitting first information, the first information being used to determine a target carrier; transmitting first signaling in a first set of alternative resources; receiving a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carrying a first identifier, the first identifier being used to identify the first carrier; the first set of alternative resources including a positive integer number of alternative resource groups, the first signaling occupying one alternative resource group in the first set of alternative resources; the first... Any candidate resource group in the candidate resource set belongs to the target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0212] As an example, the first communication device 450 corresponds to the first node in this application.

[0213] As an example, the second communication device 410 corresponds to the second node in this application.

[0214] As an example, the first communication device 450 is a UE.

[0215] As an example, the first communication device 450 is a terminal.

[0216] As one embodiment, the second communication device 410 is a base station.

[0217] As one embodiment, at least four of the following are used to receive first information: antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, and controller / processor 459; at least four of the following are used to transmit first information: antenna 420, transmitter 418, multi-antenna transmitting processor 471, transmitting processor 416, and controller / processor 475.

[0218] As one embodiment, at least four of the following are used to detect first signaling in a first set of alternative resources: antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, and controller / processor 459; and at least four of the following are used to transmit first signaling in the first set of alternative resources: antenna 420, transmitter 418, multi-antenna transmitting processor 471, transmitting processor 416, and controller / processor 475.

[0219] As one embodiment, at least four of the following are used to receive a first signal on the first carrier: antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, and controller / processor 459; and at least four of the following are used to transmit a first signal on the first carrier: antenna 420, transmitter 418, multi-antenna transmitter processor 471, transmitter processor 416, and controller / processor 475.

[0220] As one implementation, at least four of the following are used to transmit a first signal on the first carrier: antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, and controller / processor 459; and at least four of the following are used to receive a first signal on the first carrier: antenna 420, receiver 418, multi-antenna receive processor 472, receive processor 470, and controller / processor 475.

[0221] As one embodiment, at least four of the following are used to receive the second information: antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, and controller / processor 459; at least four of the following are used to transmit the second information: antenna 420, transmitter 418, multi-antenna transmitting processor 471, transmitting processor 416, and controller / processor 475.

[0222] As one embodiment, at least four of the following are used to receive third information: antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, and controller / processor 459; at least four of the following are used to transmit third information: antenna 420, transmitter 418, multi-antenna transmitting processor 471, transmitting processor 416, and controller / processor 475.

[0223] Example 5

[0224] Example 5 illustrates a flowchart of a first signal, as shown in the attached diagram. Figure 5As shown. In the appendix Figure 5 In the diagram, the first node U1 and the second node N2 communicate via a wireless link. The steps marked in boxes F0 and F1 are optional.

[0225] for First node U1 In step S10, first information is received; in step S11, second information is received; in step S12, third information is received; in step S13, first signaling is detected in the first alternative resource set; and in step S14, a first signal is received in the first carrier.

[0226] for Second node N2 In step S20, first information is sent; in step S21, second information is sent; in step S22, third information is sent; in step S23, first signaling is sent in the first alternative resource set; and in step S24, first signal is sent in the first carrier.

[0227] In Example 5, the first information is used to determine the target carrier; when the first signaling is detected, the first node U1 receives the first signal in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to the target time-frequency resource pool, and the target time-frequency resource pool includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target time-frequency resource pool. The target carrier; the target identifier is a non-negative integer used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers; the second information is used to indicate the first integer and the second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool; the third information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

[0228] As one embodiment, the second information is carried via RRC signaling.

[0229] As one example, the second information is carried via higher-layer signaling.

[0230] As an example, the first integer is CORESET-specific configuration information.

[0231] As an example, the second integer is CORESET-specific configuration information.

[0232] As an example, the first time-frequency resource pool and the second time-frequency resource pool belong to the first time slot set and the second time slot set, respectively. The first time slot set includes M1 time slots, and the second time slot set includes M2 time slots. M1 is a positive integer greater than 1, and M2 is a positive integer greater than 1. Any time slot in the M1 time slots is orthogonal to any time slot in the M2 time slots in the time domain.

[0233] As an example, the first time-frequency resource pool and the second time-frequency resource pool belong to the first subcarrier set and the second subcarrier set, respectively. The first subcarrier set includes M3 subcarriers, and the second subcarrier set includes M4 subcarriers. M3 is a positive integer greater than 1, and M4 is a positive integer greater than 1. Any subcarrier among the M3 subcarriers is orthogonal to any subcarrier among the M4 subcarriers in the frequency domain.

[0234] As a sub-example of this embodiment, the target carrier is a secondary carrier, and the target carrier can be used to schedule the primary carrier.

[0235] As a sub-example of this embodiment, the target carrier can simultaneously schedule the primary carrier and the secondary carrier.

[0236] As a sub-implementation of this embodiment, the target carrier can only be self-scheduling.

[0237] As a sub-example of this embodiment, the target carrier can be scheduled across carriers by the secondary carrier.

[0238] As an example, the time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

[0239] As a sub-implementation of this embodiment, the meaning of the above sentence that the time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal includes: there is no RE that simultaneously belongs to the first time-frequency resource pool and the second time-frequency resource pool.

[0240] As one example, the second information and the first information belong to two different domains in a single signaling system.

[0241] As a sub-implementation of this embodiment, the first information and the second information are configured via an RRC signaling.

[0242] As a sub-implementation of this embodiment, the first information and the second information are two fields in an RRC signaling.

[0243] As an example, the frequency domain resources occupied by the signal carrying the first information belong to the second carrier. The first information is used to determine the first index, which is the index of the target carrier. The first information is used to determine that the target carrier and the second carrier are different. The target carrier schedules the second carrier across carriers.

[0244] As a sub-implementation of this embodiment, the second carrier is the primary component carrier (PCC).

[0245] As a sub-example of this embodiment, the second carrier is the carrier occupied by the primary cell (Pcell).

[0246] As a sub-implementation of this embodiment, the second carrier is the first carrier.

[0247] As an example, the third information is configured via an RRC signaling.

[0248] As an example, the target time-frequency resource pool includes P1 candidate resource groups, the first candidate resource set includes P2 candidate resource groups, P1 is a positive integer greater than 1, P2 is a positive integer greater than 1, and the third information is used to indicate P1 and P2.

[0249] As an example, the first signaling is a downlink grant, and the physical layer channel carrying the first signal is a PDSCH.

[0250] Example 6

[0251] Example 6 illustrates another flowchart of the first signal, as shown in the appendix. Figure 6 As shown. In the appendix Figure 6 In this process, the first node U3 and the second node N4 communicate via a wireless link. The steps marked in boxes F2 and F3 in the figure are optional. Without conflict, the embodiments and sub-embodiments in Embodiment 5 can be applied to Embodiment 6.

[0252] for First node U3In step S30, first information is received; in step S31, second information is received; in step S32, third information is received; in step S33, first signaling is detected in the first alternative resource set; and in step S34, a first signal is transmitted in the first carrier.

[0253] for Second node N4 In step S40, first information is sent; in step S41, second information is sent; in step S42, third information is sent; in step S43, first signaling is sent in the first alternative resource set; and in step S44, first signal is received in the first carrier.

[0254] In Example 6, the first information is used to determine the target carrier; when the first signaling is detected, the first node U3 transmits the first signal in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier; the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to the target time-frequency resource pool, and the target time-frequency resource pool includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target time-frequency resource pool. The target carrier; the target identifier is a non-negative integer used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of a first time-frequency resource pool and a second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from a first integer and a second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers; the second information is used to indicate the first integer and the second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool; the third information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

[0255] As an example, the first signaling is an uplink grant, and the physical layer channel carrying the first signal is a PUSCH.

[0256] Example 7

[0257] Example 7 illustrates a schematic diagram of a target time-frequency resource pool, as shown in the attached diagram. Figure 7 As shown. In the appendix Figure 7In this context, the target time-frequency resource pool occupies a positive integer number of subcarriers in the frequency domain, and the target time-frequency resource pool occupies a positive integer number of multicarrier symbols in the time domain.

[0258] As an example, the target time-frequency resource pool occupies a frequency bandwidth corresponding to a positive integer number of PRBs (Physical Resource Blocks) in the frequency domain.

[0259] As an example, the multicarrier symbol described in this application is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0260] As an example, the multi-carrier symbol described in this application is the SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbol.

[0261] As an example, the multicarrier symbol described in this application is the FBMC (Filter Bank MultiCarrier) symbol.

[0262] As an example, the multicarrier symbol described in this application is an OFDM symbol containing a CP (Cyclic Prefix).

[0263] As an example, the multicarrier symbol described in this application is a DFT-s-OFDM (Discrete Fourier Transform Spreading Orthogonal Frequency Division Multiplexing) symbol containing CP.

[0264] Example 8

[0265] Example 8 illustrates a schematic diagram of a target carrier and a first carrier according to this application; as shown in the appendix. Figure 8 As shown. In the appendix Figure 8 In this context, the target carrier and the first carrier are orthogonal.

[0266] As one example, the target carrier is a secondary carrier.

[0267] As an example, the first carrier is the primary carrier.

[0268] As an example, the target carrier is an LTE carrier.

[0269] As an example, the first carrier is an NR carrier.

[0270] As an example, the ServCellId corresponding to the target carrier is equal to 1.

[0271] As an example, the ServCellId corresponding to the first carrier is equal to 0.

[0272] As an example, the ServCellIndex corresponding to the target carrier is equal to 1.

[0273] As an example, the ServCellIndex corresponding to the first carrier is equal to 0.

[0274] Example 9

[0275] Example 9 illustrates a schematic diagram of a first alternative resource set of this application, as shown in the attached diagram. Figure 9 As shown. In the appendix Figure 9 In this application, the target time-frequency resource pool (shown by the dashed box in the figure) includes Y1 CCEs, where Y1 is a positive integer greater than 1. One or more of the Y1 CCEs (corresponding to CCE#0 to CCE#(Y1-1) in the figure) form a candidate resource group included in the first candidate resource set in this application; the CCE serial numbers corresponding to the candidate resource groups shown in the figure are the serial numbers of the CCEs included in the candidate resource groups under different aggregation levels; the CCE serial numbers listed in a curly brace in the figure identify the CCEs that make up a candidate resource group.

[0276] As shown in the figure, the left side of the figure shows the combination of K1 types of CCEs corresponding to the K1 candidate resource groups when the target time-frequency resource pool is the first time-frequency resource pool in this application; the right side of the figure shows the combination of K1 types of CCEs corresponding to the K1 candidate resource groups when the target time-frequency resource pool is the second time-frequency resource pool in this application.

[0277] Example 10

[0278] Example 10 illustrates a structural block diagram of a first node, as shown in the attached diagram. Figure 10 As shown. (Attached) Figure 10 In the first node 1001, there are a first receiver 1001, a second receiver 1002 and a first transceiver 1003.

[0279] The first receiver 1001 receives first information, which is used to determine the target carrier.

[0280] The second receiver 1002 detects the first signaling in the first set of alternative resources;

[0281] The first transceiver 1003, when the first signaling is detected, operates a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier;

[0282] In Example 10, the operation is receiving or transmitting; the first signaling carries a first identifier, which is used to identify the first carrier; the first candidate resource set includes a positive integer number of candidate resource groups, and the first signaling occupies one candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first candidate resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between the first integer and the second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0283] As an example, the first receiver 1001 receives second information; the second information is used to indicate a first integer and a second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool.

[0284] As an example, the target carrier is a secondary carrier, and the target carrier can be used to schedule the primary carrier.

[0285] As an example, the time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

[0286] As one example, the second information and the first information belong to two different domains in a single signaling system.

[0287] As an example, the frequency domain resources occupied by the signal carrying the first information belong to the second carrier. The first information is used to determine the first index, which is the index of the target carrier. The first information is used to determine that the target carrier and the second carrier are different. The target carrier schedules the second carrier across carriers.

[0288] As an example, the first receiver 1001 receives third information; the third information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

[0289] As one embodiment, the first receiver 1001 includes at least the first four of the following in embodiment 4: antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, and controller / processor 459.

[0290] As one embodiment, the second receiver 1002 includes at least the first four of the following in embodiment 4: antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, and controller / processor 459.

[0291] As an example, the first transceiver 1003 includes at least the first six of the following in embodiment 4: antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, transmitter 454, multi-antenna transmitting processor 457, transmitting processor 468, and controller / processor 459.

[0292] Example 11

[0293] Example 11 illustrates a structural block diagram in a second node, as shown in the attached diagram. Figure 11 As shown. (Attached) Figure 11 In the second node 1100, there are a first transmitter 1101, a second transmitter 1102, and a second transceiver 1103.

[0294] The first transmitter 1101 transmits first information, which is used to determine the target carrier.

[0295] The second transmitter 1102 sends the first signaling from the first set of alternative resources;

[0296] The second transceiver 1103 executes a first signal in the first carrier, and the first signaling is used to determine the time and frequency resources occupied by the first signal in the first carrier.

[0297] In Example 11, the execution is either sending or receiving; the first signaling carries a first identifier, which is used to identify the first carrier; the first alternative resource set includes a positive integer number of alternative resource groups, and the first signaling occupies one alternative resource group in the first alternative resource set; any alternative resource group in the first alternative resource set belongs to a target time-frequency resource pool, and the target time-frequency resource pool includes time-frequency resources other than those included in the first alternative resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, and the target identifier is used to determine the first alternative resource set from the target time-frequency resource pool; the target time-frequency resource pool is one of the first time-frequency resource pool and the second time-frequency resource pool; whether the target time-frequency resource pool and the first time-frequency resource pool are the same is used to determine the target identifier from between the first integer and the second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers.

[0298] As an example, the first transmitter 1101 transmits second information; the second information is used to indicate a first integer and a second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool.

[0299] As an example, the target carrier is a secondary carrier, and the target carrier can be used to schedule the primary carrier.

[0300] As an example, the time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

[0301] As one example, the second information and the first information belong to two different domains in a single signaling system.

[0302] As an example, the frequency domain resources occupied by the signal carrying the first information belong to the second carrier. The first information is used to determine the first index, which is the index of the target carrier. The first information is used to determine that the target carrier and the second carrier are different. The target carrier schedules the second carrier across carriers.

[0303] As an example, the first transmitter 1101 transmits third information; the third information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

[0304] As one embodiment, the first transmitter 1101 includes at least the first four of the following in embodiment 4: antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, and controller / processor 475.

[0305] As one embodiment, the second transmitter 1102 includes at least the first four of the following in embodiment 4: antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, and controller / processor 475.

[0306] As one embodiment, the second transceiver 1103 includes at least the first six of the following in embodiment 4: antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, receiver 418, multi-antenna receive processor 472, receive processor 470, and controller / processor 475.

[0307] Example 12

[0308] Example 12 illustrates a schematic diagram of a second piece of information of this application, as shown in the attached diagram. Figure 12 As shown. In the appendix Figure 12 In this context, the second information is CrossCarrierSchedulingConfig in TS (Technical Specification) 38.331, as shown in the figure. The second information is used to configure the first carrier. The first carrier includes a scheduling CIF, corresponding to cif-InSchedulingCell in the figure, which is used to determine the first carrier from multiple carriers; and the first carrier includes two search spaces CIF, corresponding to cif-searchspace1 and cif-searchspace2 in the figure, respectively. cif-searchspace1 corresponds to ControlResourceSetId-A, and cif-searchspace2 corresponds to ControlResourceSetId-B; ControlResourceSetId-A is the identifier of the first time-frequency resource pool in this application, and ControlResourceSetId-B is the identifier of the second time-frequency resource pool in this application; when the target time-frequency resource pool is the first time-frequency resource pool, cif-searchspace1 is used to determine the first candidate resource set from the target time-frequency resource pool; when the target time-frequency resource pool is the second time-frequency resource pool, cif-searchspace2 is used to determine the first candidate resource set from the target time-frequency resource pool.

[0309] As an example, the value of cif-searchspace1 is the first integer in this application.

[0310] As an example, the value of cif-searchspace2 is the second integer in this application.

[0311] As an example, the ServCellIndex is used to identify the target carrier.

[0312] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The first node and the second node in this application include, but are not limited to, wireless communication devices such as mobile phones, tablets, laptops, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle communication devices, vehicles, RSUs, aircraft, airplanes, drones, and remote-controlled airplanes. The base station in this application includes, but is not limited to, wireless communication devices such as macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, Transmitter Receiver Nodes (TRPs), GNSS, relay satellites, satellite base stations, airborne base stations, and RSUs.

[0313] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A first node for wireless communication, characterized in that... include: A first receiver receives first information, which is used to determine that a target carrier can be used for cross-carrier scheduling of the first carrier. The second receiver detects the first signaling in the first set of alternative resources; The first transceiver, when the first signaling is detected, operates a first signal in the first carrier, the first signaling being used to determine the time-frequency resources occupied by the first signal in the first carrier; Wherein, the operation is receiving, or the operation is sending; The first signaling carries a first identifier, which is used to identify the first carrier; the first alternative resource set includes a positive integer number of alternative resource groups, and the first signaling occupies one alternative resource group in the first alternative resource set; any alternative resource group in the first alternative resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first alternative resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first alternative resource set from the target time-frequency resource pool; the target time-frequency resource pool is a first time-frequency resource pool, or the target time-frequency resource pool is a second time-frequency resource pool. When the target time-frequency resource pool is the first time-frequency resource pool, the target identifier is equal to the first integer, and when the target time-frequency resource pool is the second time-frequency resource pool, the target identifier is equal to the second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers; the first information is carried by RRC signaling, and the physical layer channel carrying the first signaling is PDCCH.

2. The first node according to claim 1, characterized in that, The first receiver receives second information; the second information is used to indicate the first integer and the second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool.

3. The first node according to claim 1 or 2, characterized in that, The target carrier can be used to schedule the primary carrier.

4. The first node according to claim 1, characterized in that, The time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

5. The first node according to claim 2, characterized in that, The second information and the first information belong to two different fields in a single signaling system.

6. The first node according to claim 1, characterized in that, The frequency domain resources occupied by the signal carrying the first information belong to the second carrier. The first information is used to determine the first index, which is the index of the target carrier. The first information is used to determine that the target carrier and the second carrier are different. The target carrier schedules the second carrier across carriers.

7. The first node according to claim 1, characterized in that, The first receiver receives third information; the third information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

8. The first node according to claim 1, characterized in that, The information unit carrying the first information is CrossCarrierSchedulingConfig in TS38.

331.

9. The first node according to claim 8, characterized in that, The first information corresponds to the schedulingCellId part in the CrossCarrierSchedulingConfig.

10. The first node according to claim 1, characterized in that, The first information is used to determine that the target carrier can be used to schedule the first carrier.

11. The first node according to claim 1, characterized in that, The first information is used to determine the carrier indication field value used in the scheduling signaling to indicate the target carrier when the target carrier is scheduled across other carriers.

12. The first node according to claim 1, characterized in that, The target carrier includes PCell.

13. The first node according to claim 1, characterized in that, The target carrier corresponds to the secondary cell of the first node.

14. The first node according to claim 1, characterized in that, The first carrier corresponds to the primary cell of the first node.

15. The first node according to claim 1, characterized in that, The first signaling indicates the time-frequency position occupied by the first signal in the first carrier.

16. The first node according to claim 1, characterized in that, The first set of candidate resources is a set of PDCCH search spaces.

17. The first node according to claim 1, characterized in that, The CRC carried by the first signaling is scrambled by the C-RNTI of the first node.

18. The first node according to claim 1, characterized in that, The first identifier is used to identify the first carrier from a set of candidate carriers, the set of candidate carriers including Q1 carriers; Q1 is a positive integer not greater than 8.

19. The first node according to claim 1, characterized in that, The first set of candidate resources includes K1 candidate resource groups, where K1 is a positive integer greater than 1, and the K1 candidate resource groups correspond to K1 PDCCH candidates respectively.

20. The first node according to claim 1, characterized in that, The target time-frequency resource pool is a CORESET.

21. The first node according to claim 1, characterized in that, The first integer is equal to 0, and the second integer is greater than 0.

22. The first node according to claim 1, characterized in that, When the first carrier is equal to the target carrier, the first integer is equal to 0, and the second integer is greater than 0.

23. The first node according to claim 1, characterized in that, The first time-frequency resource pool is a CORESET, and the second time-frequency resource pool is a CORESET.

24. The first node according to claim 1, characterized in that, The first set of candidate resources includes K1 candidate resource groups, each of the K1 candidate resource groups occupies a positive integer number of CCEs, and the target identifier is used to determine the position of the positive integer number of CCEs occupied by any of the K1 candidate resource groups from the target time-frequency resource pool.

25. The first node according to claim 2, characterized in that, The second information is carried via RRC signaling.

26. The first node according to claim 1, characterized in that, The first time-frequency resource pool and the second time-frequency resource pool belong to the first subcarrier set and the second subcarrier set, respectively. The first subcarrier set includes M3 subcarriers, and the second subcarrier set includes M4 subcarriers. M3 is a positive integer greater than 1, and M4 is a positive integer greater than 1. Any subcarrier in the M3 subcarriers is orthogonal to any subcarrier in the M4 subcarriers in the frequency domain.

27. The first node according to claim 2, characterized in that, The first information and the second information are configured via an RRC signaling.

28. The first node according to claim 7, characterized in that, The third information is configured via an RRC signaling.

29. A second node for use in wireless communication, characterized in that... include: The first transmitter sends first information, which is used to determine that the target carrier can be used for cross-carrier scheduling of the first carrier. The second transmitter sends the first signaling from the first set of alternative resources; The second transceiver executes a first signal in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier; Wherein, the execution is sending, or the execution is receiving; the first signaling carries a first identifier, which is used to identify the first carrier; the first alternative resource set includes a positive integer number of alternative resource groups, and the first signaling occupies one alternative resource group in the first alternative resource set; any alternative resource group in the first alternative resource set belongs to the target time-frequency resource pool, and the target time-frequency resource pool includes time-frequency resources other than those included in the first alternative resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, and... The target identifier is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is a first time-frequency resource pool, or the target time-frequency resource pool is a second time-frequency resource pool. When the target time-frequency resource pool is the first time-frequency resource pool, the target identifier is equal to a first integer; when the target time-frequency resource pool is the second time-frequency resource pool, the target identifier is equal to a second integer. The first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers. The first information is carried by RRC signaling, and the physical layer channel carrying the first signaling is PDCCH.

30. The second node according to claim 29, characterized in that, The first transmitter sends second information; the second information is used to indicate the first integer and the second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool.

31. The second node according to claim 29 or 30, characterized in that, The target carrier can be used to schedule the primary carrier.

32. The second node according to claim 29, characterized in that, The time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

33. The second node according to claim 30, characterized in that, The second information and the first information belong to two different fields in a single signaling system.

34. The second node according to claim 29, characterized in that, The frequency domain resources occupied by the signal carrying the first information belong to the second carrier. The first information is used to determine the first index, which is the index of the target carrier. The first information is used to determine that the target carrier and the second carrier are different. The target carrier schedules the second carrier across carriers.

35. The second node according to claim 29, characterized in that, The first transmitter sends third information; the third information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

36. The second node according to claim 29, characterized in that, The information unit carrying the first information is CrossCarrierSchedulingConfig in TS38.

331.

37. The second node according to claim 36, characterized in that, The first information corresponds to the schedulingCellId part in the CrossCarrierSchedulingConfig.

38. The second node according to claim 29, characterized in that, The first information is used to determine that the target carrier can be used to schedule the first carrier.

39. The second node according to claim 29, characterized in that, The first information is used to determine the carrier indication field value used in the scheduling signaling to indicate the target carrier when the target carrier is scheduled across other carriers.

40. The second node according to claim 29, characterized in that, The target carrier includes PCell.

41. The second node according to claim 29, characterized in that, The target carrier corresponds to the secondary cell of the receiver of the first information.

42. The second node according to claim 29, characterized in that, The first carrier corresponds to the primary cell of the receiver of the first information.

43. The second node according to claim 29, characterized in that, The first signaling indicates the time-frequency position occupied by the first signal in the first carrier.

44. The second node according to claim 29, characterized in that, The first set of candidate resources is a set of PDCCH search spaces.

45. The second node according to claim 29, characterized in that, The CRC carried by the first signaling is scrambled by the C-RNTI of the receiver of the first information.

46. ​​The second node according to claim 29, characterized in that, The first identifier is used to identify the first carrier from a set of candidate carriers, the set of candidate carriers including Q1 carriers; Q1 is a positive integer not greater than 8.

47. The second node according to claim 29, characterized in that, The first set of candidate resources includes K1 candidate resource groups, where K1 is a positive integer greater than 1, and the K1 candidate resource groups correspond to K1 PDCCH candidates respectively.

48. The second node according to claim 29, characterized in that, The target time-frequency resource pool is a CORESET.

49. The second node according to claim 29, characterized in that, The first integer is equal to 0, and the second integer is greater than 0.

50. The second node according to claim 29, characterized in that, When the first carrier is equal to the target carrier, the first integer is equal to 0, and the second integer is greater than 0.

51. The second node according to claim 29, characterized in that, The first time-frequency resource pool is a CORESET, and the second time-frequency resource pool is a CORESET.

52. The second node according to claim 29, characterized in that, The first set of candidate resources includes K1 candidate resource groups, each of the K1 candidate resource groups occupies a positive integer number of CCEs, and the target identifier is used to determine the position of the positive integer number of CCEs occupied by any of the K1 candidate resource groups from the target time-frequency resource pool.

53. The second node according to claim 30, characterized in that, The second information is carried via RRC signaling.

54. The second node according to claim 29, characterized in that, The first time-frequency resource pool and the second time-frequency resource pool belong to the first subcarrier set and the second subcarrier set, respectively. The first subcarrier set includes M3 subcarriers, and the second subcarrier set includes M4 subcarriers. M3 is a positive integer greater than 1, and M4 is a positive integer greater than 1. Any subcarrier in the M3 subcarriers is orthogonal to any subcarrier in the M4 subcarriers in the frequency domain.

55. The second node according to claim 30, characterized in that, The first information and the second information are configured via an RRC signaling.

56. The second node according to claim 35, characterized in that, The third information is configured via an RRC signaling.

57. A method for a first node in wireless communication, characterized in that... include: Receive first information, which is used to determine that the target carrier can be used for cross-carrier scheduling of the first carrier; Detect the first signaling in the first set of alternative resources; When the first signaling is detected, a first signal is operated in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier; Wherein, the operation is receiving, or the operation is sending; The first signaling carries a first identifier, which is used to identify the first carrier; the first alternative resource set includes a positive integer number of alternative resource groups, and the first signaling occupies one alternative resource group in the first alternative resource set; any alternative resource group in the first alternative resource set belongs to a target time-frequency resource pool, which includes time-frequency resources other than those included in the first alternative resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, which is used to determine the first alternative resource set from the target time-frequency resource pool; the target time-frequency resource pool is a first time-frequency resource pool, or the target time-frequency resource pool is a second time-frequency resource pool. When the target time-frequency resource pool is the first time-frequency resource pool, the target identifier is equal to the first integer, and when the target time-frequency resource pool is the second time-frequency resource pool, the target identifier is equal to the second integer; the first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers; the first information is carried by RRC signaling, and the physical layer channel carrying the first signaling is PDCCH.

58. The method in the first node according to claim 57, characterized in that... include: Receive the second message; The second information is used to indicate the first integer and the second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool.

59. The method in the first node according to claim 57 or 58, characterized in that, The target carrier can be used to schedule the primary carrier.

60. The method in the first node according to claim 57, characterized in that, The time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

61. The method in the first node according to claim 58, characterized in that, The second information and the first information belong to two different fields in a single signaling system.

62. The method in the first node according to claim 57, characterized in that, The frequency domain resources occupied by the signal carrying the first information belong to the second carrier. The first information is used to determine the first index, which is the index of the target carrier. The first information is used to determine that the target carrier and the second carrier are different. The target carrier schedules the second carrier across carriers.

63. The method in the first node according to claim 57, characterized in that, include: Receive third-party information; The third piece of information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

64. The method in the first node according to claim 57, characterized in that, The information unit carrying the first information is CrossCarrierSchedulingConfig in TS 38.

331.

65. The method in the first node according to claim 64, characterized in that, The first information corresponds to the schedulingCellId part in the CrossCarrierSchedulingConfig.

66. The method in the first node according to claim 57, characterized in that, The first information is used to determine that the target carrier can be used to schedule the first carrier.

67. The method in the first node according to claim 57, characterized in that, The first information is used to determine the carrier indication field value used in the scheduling signaling to indicate the target carrier when the target carrier is scheduled across other carriers.

68. The method in the first node according to claim 57, characterized in that, The target carrier includes PCell.

69. The method in the first node according to claim 57, characterized in that, The target carrier corresponds to the secondary cell of the first node.

70. The method in the first node according to claim 57, characterized in that, The first carrier corresponds to the primary cell of the first node.

71. The method in the first node according to claim 57, characterized in that, The first signaling indicates the time-frequency position occupied by the first signal in the first carrier.

72. The method in the first node according to claim 57, characterized in that, The first set of candidate resources is a set of PDCCH search spaces.

73. The method in the first node according to claim 57, characterized in that, The CRC carried by the first signaling is scrambled by the C-RNTI of the first node.

74. The method in the first node according to claim 57, characterized in that, The first identifier is used to identify the first carrier from a set of candidate carriers, the set of candidate carriers including Q1 carriers; Q1 is a positive integer not greater than 8.

75. The method in the first node according to claim 57, characterized in that, The first set of candidate resources includes K1 candidate resource groups, where K1 is a positive integer greater than 1, and the K1 candidate resource groups correspond to K1 PDCCH candidates respectively.

76. The method in the first node according to claim 57, characterized in that, The target time-frequency resource pool is a CORESET.

77. The method in the first node according to claim 57, characterized in that, The first integer is equal to 0, and the second integer is greater than 0.

78. The method in the first node according to claim 57, characterized in that, When the first carrier is equal to the target carrier, the first integer is equal to 0, and the second integer is greater than 0.

79. The method in the first node according to claim 57, characterized in that, The first time-frequency resource pool is a CORESET, and the second time-frequency resource pool is a CORESET.

80. The method in the first node according to claim 57, characterized in that, The first set of candidate resources includes K1 candidate resource groups, each of the K1 candidate resource groups occupies a positive integer number of CCEs, and the target identifier is used to determine the position of the positive integer number of CCEs occupied by any of the K1 candidate resource groups from the target time-frequency resource pool.

81. The method in the first node according to claim 58, characterized in that, The second information is carried via RRC signaling.

82. The method in the first node according to claim 57, characterized in that, The first time-frequency resource pool and the second time-frequency resource pool belong to the first subcarrier set and the second subcarrier set, respectively. The first subcarrier set includes M3 subcarriers, and the second subcarrier set includes M4 subcarriers. M3 is a positive integer greater than 1, and M4 is a positive integer greater than 1. Any subcarrier in the M3 subcarriers is orthogonal to any subcarrier in the M4 subcarriers in the frequency domain.

83. The method in the first node according to claim 58, characterized in that, The first information and the second information are configured via an RRC signaling.

84. The method in the first node according to claim 63, characterized in that, The third information is configured via an RRC signaling.

85. A method for a second node in wireless communication, characterized in that... include: Send first information, which is used to determine that the target carrier can be used for cross-carrier scheduling of the first carrier; Send the first signaling to the first set of alternative resources; A first signal is executed in the first carrier, and the first signaling is used to determine the time-frequency resources occupied by the first signal in the first carrier; Wherein, the execution is sending, or the execution is receiving; the first signaling carries a first identifier, which is used to identify the first carrier; the first alternative resource set includes a positive integer number of alternative resource groups, and the first signaling occupies one alternative resource group in the first alternative resource set; any alternative resource group in the first alternative resource set belongs to the target time-frequency resource pool, and the target time-frequency resource pool includes time-frequency resources other than those included in the first alternative resource set; the frequency domain resources occupied by the target time-frequency resource pool belong to the target carrier; the target identifier is a non-negative integer, and... The target identifier is used to determine the first candidate resource set from the target time-frequency resource pool; the target time-frequency resource pool is a first time-frequency resource pool, or the target time-frequency resource pool is a second time-frequency resource pool. When the target time-frequency resource pool is the first time-frequency resource pool, the target identifier is equal to a first integer; when the target time-frequency resource pool is the second time-frequency resource pool, the target identifier is equal to a second integer. The first integer and the second integer are not equal, and both the first integer and the second integer are non-negative integers. The first information is carried by RRC signaling, and the physical layer channel carrying the first signaling is PDCCH.

86. The method in the second node according to claim 85, characterized in that, include: Send a second message; The second information is used to indicate the first integer and the second integer; the first integer and the second integer are respectively associated with the first time-frequency resource pool and the second time-frequency resource pool.

87. The method in the second node according to claim 85 or 86, characterized in that, The target carrier can be used to schedule the primary carrier.

88. The method in the second node according to claim 85, characterized in that, The time-frequency resources occupied by the first time-frequency resource pool and the time-frequency resources occupied by the second time-frequency resource pool are orthogonal.

89. The method in the second node according to claim 86, characterized in that, The second information and the first information belong to two different fields in a single signaling system.

90. The method in the second node according to claim 85, characterized in that, The frequency domain resources occupied by the signal carrying the first information belong to the second carrier. The first information is used to determine the first index, which is the index of the target carrier. The first information is used to determine that the target carrier and the second carrier are different. The target carrier schedules the second carrier across carriers.

91. The method in the second node according to claim 85, characterized in that, include: Send a third message; The third piece of information is used to determine the number of candidate resource groups included in the target time-frequency resource pool and the first candidate resource set.

92. The method in the second node according to claim 85, characterized in that, The information unit carrying the first information is CrossCarrierSchedulingConfig in TS 38.

331.

93. The method in the second node according to claim 92, characterized in that, The first information corresponds to the schedulingCellId part in the CrossCarrierSchedulingConfig.

94. The method in the second node according to claim 85, characterized in that, The first information is used to determine that the target carrier can be used to schedule the first carrier.

95. The method in the second node according to claim 85, characterized in that, The first information is used to determine the carrier indication field value used in the scheduling signaling to indicate the target carrier when the target carrier is scheduled across other carriers.

96. The method in the second node according to claim 85, characterized in that, The target carrier includes PCell.

97. The method in the second node according to claim 85, characterized in that, The target carrier corresponds to the secondary cell of the receiver of the first information.

98. The method in the second node according to claim 85, characterized in that, The first carrier corresponds to the primary cell of the receiver of the first information.

99. The method in the second node according to claim 85, characterized in that, The first signaling indicates the time-frequency position occupied by the first signal in the first carrier.

100. The method in the second node according to claim 85, characterized in that, The first set of candidate resources is a set of PDCCH search spaces.

101. The method in the second node according to claim 85, characterized in that, The CRC carried by the first signaling is scrambled by the C-RNTI of the receiver of the first information.

102. The method in the second node according to claim 85, characterized in that, The first identifier is used to identify the first carrier from a set of candidate carriers, the set of candidate carriers including Q1 carriers; Q1 is a positive integer not greater than 8.

103. The method in the second node according to claim 85, characterized in that, The first set of candidate resources includes K1 candidate resource groups, where K1 is a positive integer greater than 1, and the K1 candidate resource groups correspond to K1 PDCCH candidates respectively.

104. The method in the second node according to claim 85, characterized in that, The target time-frequency resource pool is a CORESET.

105. The method in the second node according to claim 85, characterized in that, The first integer is equal to 0, and the second integer is greater than 0.

106. The method in the second node according to claim 85, characterized in that, When the first carrier is equal to the target carrier, the first integer is equal to 0, and the second integer is greater than 0.

107. The method in the second node according to claim 85, characterized in that, The first time-frequency resource pool is a CORESET, and the second time-frequency resource pool is a CORESET.

108. The method in the second node according to claim 85, characterized in that, The first set of candidate resources includes K1 candidate resource groups, each of the K1 candidate resource groups occupies a positive integer number of CCEs, and the target identifier is used to determine the position of the positive integer number of CCEs occupied by any of the K1 candidate resource groups from the target time-frequency resource pool.

109. The method in the second node according to claim 86, characterized in that, The second information is carried via RRC signaling.

110. The method in the second node according to claim 85, characterized in that, The first time-frequency resource pool and the second time-frequency resource pool belong to the first subcarrier set and the second subcarrier set, respectively. The first subcarrier set includes M3 subcarriers, and the second subcarrier set includes M4 subcarriers. M3 is a positive integer greater than 1, and M4 is a positive integer greater than 1. Any subcarrier in the M3 subcarriers is orthogonal to any subcarrier in the M4 subcarriers in the frequency domain.

111. The method in the second node according to claim 86, characterized in that, The first information and the second information are configured via an RRC signaling.

112. The method in the second node according to claim 91, characterized in that, The third information is configured via an RRC signaling.

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