WO2021135251A1 - Method and device for secondary-cell cross-carrier scheduling of primary-cell downlink control information - Google Patents

Abstract

The present disclosure relates to a method and device for secondary-cell cross-carrier scheduling of primary-cell downlink control information, said method comprising: determining downlink control information (DCI) for scheduling a data channel of a primary cell; in a scheduling cell, sending a physical downlink control channel (PDCCH) carrying said DCI; the scheduling cell is a secondary cell which supports cross-carrier scheduling, and the length of the DCI and/or the length of the fields in the DCI are determined by high-level signaling of the scheduling cell or other secondary cells. The embodiments of the present disclosure can increase the PDCCH capacity on the primary cell, effectively solving the problem of PDCCH capacity limitation on the primary cell.

Description

Method and device for secondary cell cross-carrier scheduling primary cell downlink control information Technical field

The present disclosure relates to the field of communication technologies, and in particular to a method and device for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell.

Background technique

In the carrier aggregation scenario, the PDCCH of the primary cell bears greater capacity pressure, and sufficient PDCCH capacity is required. How to expand the PDCCH capacity of the primary cell as much as possible is an urgent problem to be solved.

Summary of the invention

In view of this, the present disclosure proposes a method and device for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell.

According to an aspect of the present disclosure, a method for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell is provided, including:

Determine the downlink control information (DCI) for scheduling the data channel of the primary cell;

Sending the PDCCH carrying the DCI in the scheduling cell;

The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells.

In a possible implementation manner, the determining the DCI for scheduling the data channel of the primary cell includes:

Determine the length and/or of the DCI according to the high-level signaling of the scheduling cell or the high-level signaling of another secondary cell corresponding to the same Carrier Indicator Field (CIF) value as the primary cell The length of the field in the DCI.

In a possible implementation manner, the length of the DCI is determined according to the high-level signaling of the scheduling cell or the high-level signaling of another secondary cell corresponding to the same CIF value as the primary cell. /Or the length of the field in the DCI, including:

In the case that the CIF value corresponding to the DCI is not 0, the length of the DCI and/or the fields in the DCI are determined according to higher layer signaling of another secondary cell corresponding to the same CIF value as the primary cell length.

In a possible implementation manner, the length of the DCI is determined according to the high-level signaling of the scheduling cell or the high-level signaling of another secondary cell corresponding to the same CIF value as the primary cell. /Or the length of the field in the DCI, including:

In the case that the CIF field is not set in the DCI or the CIF value corresponding to the DCI is 0, the length of the DCI and/or the length of the field in the DCI is determined according to the high-level signaling of the scheduling cell.

In a possible implementation manner, the method further includes:

In the case that the CIF field is not set in the DCI, it is indicated that the DCI corresponds to the primary cell through the primary cell dedicated search space and/or the control resource unit set.

In a possible implementation, the fields in the DCI include: Bandwidth part (BWP) indication, Transmission configuration indication (Transmission configuration indication, TCI), uplink (UL) indication, supplementary uplink At least one of the Supplementary uplink (SUL) instructions.

In a possible implementation manner, the determining the DCI for scheduling the data channel of the primary cell further includes:

When the number of BWP indication bits in the DCI of the data channel of the scheduling scheduling cell is 0, the number of BWP indication bits in the DCI of the DCI of the scheduling primary cell data channel is set to 1 or 2 to indicate that the BWP handover of the primary cell is not to be performed;

When the number of BWP indication bits in the DCI of the data channel of the scheduling scheduling cell is 1, the number of BWP indication bits in the DCI of the DCI of the scheduling primary cell data channel is set to 2, to indicate that the BWP of the primary cell is switched to the default BWP Or a BWP index configured by high-level signaling of the primary cell.

In a possible implementation manner, the determining the downlink control information DCI for scheduling the data channel of the primary cell further includes:

Make the length of the TCI in the DCI of the data channel of the scheduling primary cell greater than the length of the corresponding TCI in the DCI of the data channel of the scheduling and scheduling cell to indicate the use of the TCI with the lowest index of the physical downlink shared channel PDSCH;

The length of the TCI in the DCI of the data channel of the scheduling primary cell is smaller than the length of the corresponding TCI in the DCI of the data channel of the scheduling scheduling cell, so as to indicate that the TCI in the DCI of the data channel of the scheduling primary cell is ignored.

In a possible implementation manner, the determining the downlink control information DCI for scheduling the data channel of the primary cell further includes:

Make the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell greater than the length of the corresponding UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling cell to indicate the scheduling of the carrier configured with the physical uplink control channel PUCCH ；

Make the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell smaller than the length of the corresponding UL indicator and/or SUL indicator of the DCI of the data channel of the scheduling cell to indicate the scheduling of the carrier configured with the physical uplink shared channel PUSCH .

According to another aspect of the present disclosure, a method for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell is provided, including:

Receiving the downlink control information DCI of the data channel of the scheduling primary cell, the DCI being carried in the physical downlink control channel PDCCH sent by the scheduling cell;

Decode the DCI to obtain indication information;

The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells.

In a possible implementation manner, the decoding the DCI to obtain indication information includes:

According to the carrier indicator field CIF in the DCI, it is determined that the DCI belongs to the primary cell.

In a possible implementation manner, the decoding the DCI to obtain indication information includes:

Decode the DCI to obtain a partial bandwidth BWP indication;

When the number of BWP indication bits in the DCI of the scheduling cell data channel is 0, and the number of BWP indication bits in the DCI of the scheduling primary cell data channel is 1 or 2, the BWP handover of the primary cell is not performed;

When the number of BWP indication bits in the DCI of the scheduling cell data channel is 1, and the number of BWP indication bits in the DCI of the scheduling primary cell data channel is 2, the BWP of the primary cell is switched to the default BWP or the primary A BWP index configured by the high-level signaling of the cell.

In a possible implementation manner, the decoding the DCI to obtain indication information includes:

Decode the DCI to obtain a transmission configuration indication TCI;

When the length of the TCI in the DCI of the data channel of the scheduling primary cell is greater than the length of the corresponding TCI in the DCI of the data channel of the scheduling and scheduling cell, the TCI with the lowest index of the physical downlink shared channel PDSCH is used;

In the case where the length of the TCI in the DCI of the scheduling primary cell data channel is less than the length of the corresponding TCI in the DCI of the scheduling scheduling cell data channel, the TCI in the DCI of the scheduling primary cell data channel is ignored.

In a possible implementation manner, the decoding the DCI to obtain indication information includes:

Decoding the DCI to obtain an uplink UL indication and/or a supplementary uplink SUL indication;

When the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell is greater than the length of the corresponding UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling scheduling cell, the scheduling is configured with a physical uplink control channel (Physical Uplink Control Channel). Uplink Control Channel, PUCCH) carrier;

In the case that the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell is less than the length of the corresponding UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling scheduling cell, the scheduling is configured with a physical uplink shared channel (Physical Uplink Shared Channel). Uplink shared Channel, PUSCH) carrier.

According to another aspect of the present disclosure, a network element device is provided, and the network element device includes:

The determining module is used to determine the downlink control information DCI for scheduling the data channel of the primary cell;

A sending module, configured to send the physical downlink control channel PDCCH carrying the DCI in the scheduling cell;

The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells.

According to another aspect of the present disclosure, a terminal device is provided, and the terminal device includes:

The receiving module is configured to receive the downlink control information DCI of the data channel of the scheduling primary cell, and the DCI is carried in the physical downlink control channel PDCCH sent by the scheduling cell;

A decoding module for decoding the DCI to obtain indication information;

The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells.

According to another aspect of the present disclosure, there is provided a network element device, including: a processor; a memory for storing executable instructions of the processor; wherein the processor is configured to execute the above method.

According to another aspect of the present disclosure, there is provided a terminal device including: a processor; a memory for storing executable instructions of the processor; wherein the processor is configured to execute the above method.

According to another aspect of the present disclosure, there is provided a non-volatile computer-readable storage medium having computer program instructions stored thereon, wherein the computer program instructions implement the above method when executed by a processor.

In the embodiment of the present disclosure, the DCI for scheduling the data channel of the primary cell is determined; and the physical downlink control channel PDCCH carrying the DCI is sent in the scheduling cell; the scheduling cell is a secondary cell that supports cross-carrier scheduling, the length of the DCI and/or the DCI The length of the middle field is determined by the high-level signaling of the scheduling cell or other secondary cells; the scheduling cell sends the PDCCH carrying the DCI for scheduling the data channel of the primary cell, which reduces the pressure of the primary cell to send such DCI, and the PDCCH sent by the primary cell can carry More other information increases the PDCCH capacity on the primary cell; effectively solves the problem of limited PDCCH capacity on the primary cell.

According to the following detailed description of exemplary embodiments with reference to the accompanying drawings, other features and aspects of the present disclosure will become clear.

Description of the drawings

The drawings included in the specification and constituting a part of the specification together with the specification illustrate exemplary embodiments, features, and aspects of the present disclosure, and are used to explain the principle of the present disclosure.

Fig. 1 shows a schematic structural diagram of a mobile communication system according to an embodiment of the present disclosure;

2 shows a flowchart of a method for cross-carrier scheduling of primary cell downlink control information in a secondary cell according to an embodiment of the present disclosure;

FIG. 3 shows a flowchart of a method for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell according to an embodiment of the present disclosure;

4 shows a schematic structural diagram of a network element device for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell according to an embodiment of the present disclosure;

FIG. 5 shows a schematic structural diagram of a terminal device for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell according to an embodiment of the present disclosure;

Fig. 6 shows a block diagram of a terminal device for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell according to an embodiment of the present disclosure;

Fig. 7 shows a block diagram of a network element device for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell according to an embodiment of the present disclosure.

Detailed ways

Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the drawings. The same reference numerals in the drawings indicate elements with the same or similar functions. Although various aspects of the embodiments are shown in the drawings, unless otherwise noted, the drawings are not necessarily drawn to scale.

The dedicated word "exemplary" here means "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" need not be construed as being superior or better than other embodiments.

In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present disclosure can also be implemented without certain specific details. In some instances, the methods, means, elements, and circuits well known to those skilled in the art have not been described in detail, so as to highlight the gist of the present disclosure.

The inventor realizes that the problem of PDCCH capacity limitation on the primary cell can be solved by improving the cross-carrier scheduling mechanism in the carrier aggregation scenario.

The inventor found that in the carrier aggregation scenario, if a cell of a terminal device is configured for cross-carrier scheduling, it means that the terminal device needs to monitor the physical downlink control channel of this cell on another cell, and there is no PDCCH transmission on this cell. of. In the related technology, only the cross-carrier scheduling of the secondary cell is supported, while the primary cell can only be scheduled on the own carrier, which causes the problem of limited PDCCH capacity on the primary cell, such as insufficient PDCCH resources, too many blind PDCCH detections, etc. Wait for bottlenecks.

Therefore, in order to solve the above-mentioned problems in related technologies, the present disclosure proposes a technical solution for cross-carrier scheduling of primary cell downlink control information by a secondary cell, by determining the DCI for scheduling the data channel of the primary cell; DCI physical downlink control channel PDCCH; the scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by the high-level signaling of the scheduling cell or other secondary cells; the scheduling cell sends the bearer scheduling master The PDCCH of the DCI of the cell data channel reduces the pressure of the primary cell to send such DCI. The PDCCH sent by the primary cell can carry more other information, which increases the PDCCH capacity on the primary cell; it effectively solves the problem of the PDCCH capacity on the primary cell. The problem of limitation.

Fig. 1 shows a schematic structural diagram of a mobile communication system according to an embodiment of the present disclosure. As shown in FIG. 1, the mobile communication system may include: a network element device 10 and a terminal device 20. The mobile communication system to which the embodiments of the present disclosure are applicable may be a Long Term Evolution (LTE) system, or a 5G system. The 5G system is also called New Radio (NR), and it may also be 4G or 3G communication. The system can also be various new communication systems in the future, such as 6G, 7G, etc., which are not limited here. The embodiments of the present disclosure are also applicable to different network architectures, including but not limited to a relay network architecture, a dual-link architecture, a vehicle-to-everything (V2X) architecture, etc.

The network element device 10 may be a base station (base station, BS), and may also be referred to as a base station device, and is a device deployed in a radio access network (Radio Access Network, RAN) to provide wireless communication functions. For example, the equipment that provides the base station function in the 2G network includes the base transceiver station (BTS), the equipment that provides the base station function in the 3G network includes the NodeB (NodeB), and the equipment that provides the base station function in the 4G network includes the evolution Node B (evolved NodeB, eNB), the equipment that provides base station functions in wireless local area networks (WLAN) is an access point (AP), and the equipment that provides base station functions in 5G new wireless It is the gNB and the continuously evolving Node B (ng-eNB), in which the NR technology is used for communication between the gNB and the terminal, and the E-UTRA (Evolved Universal Terrestrial Radio Access) technology is used for communication between the ng-eNB and the terminal. Both ng-eNB and ng-eNB can be connected to a 5G core network; the base station in the embodiment of the present disclosure also includes equipment that provides base station functions in a new communication system in the future.

The base station controller in the embodiments of the present disclosure is a device for managing base stations, such as a base station controller (BSC) in a 2G network, a radio network controller (RNC) in a 3G network, It can also refer to a device that controls and manages base stations in a new communication system in the future. The network side network refers to the communication network that provides communication services for the terminal, including the base station of the wireless access network, may also include the base station controller of the wireless access network, and may also include the equipment on the core network side. The core network can be an evolved packet core (EPC), a 5G core network (5G Core Network), or a new type of core network in the future communication system. 5G Core Network consists of a set of devices, and implements access and mobility management functions (Access and Mobility Management Function, AMF) for functions such as mobility management, and provides data packet routing and forwarding and Quality of Service (QoS) management User Plane Function (UPF) with other functions, Session Management Function (SMF), which provides functions such as session management, IP address allocation and management, etc. EPC can be composed of MME that provides functions such as mobility management and gateway selection, Serving Gateway (S-GW) that provides functions such as data packet forwarding, and PDN Gateway (PDN Gateway, P-GW) that provides functions such as terminal address allocation and rate control. GW) composition.

The terminal device 20 may refer to various forms of user equipment (UE), access terminal equipment, user unit, user station, mobile station, mobile station (mobile station, MS), remote station, remote terminal equipment, and mobile equipment , User terminal, terminal equipment (terminal equipment), wireless communication equipment, user agent or user device. The terminal device 20 may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), and wireless Communication function handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile communication network (Public Land Mobile Network, PLMN) The embodiment of the present disclosure does not limit this terminal device.

The embodiment of the present disclosure defines the one-way communication link from the access network to the terminal device as the downlink, the data transmitted on the downlink is the downlink data, and the transmission direction of the downlink data is called the downlink direction; and the terminal to the access network The unidirectional communication link is the uplink, the data transmitted on the uplink is the uplink data, and the transmission direction of the uplink data is called the uplink direction.

It should be noted that when the mobile communication system shown in FIG. 1 adopts the 5G system or the next-generation mobile communication technology system of 5G, the above-mentioned network element equipment and terminal equipment are in the 5G system or the next-generation mobile communication technology system of 5G. They may have different names, but have the same or similar functions, which are not limited in the embodiments of the present disclosure.

It should be noted that the mobile communication system shown in FIG. 1 may include multiple network element devices 10 and/or multiple terminal devices 20. In FIG. 1, one network element device 10 and one terminal device 20 are shown. For illustration, the embodiment of the present disclosure does not limit this.

Fig. 2 shows a flow chart of a method for cross-carrier scheduling of primary cell downlink control information in a secondary cell according to an embodiment of the present disclosure; as shown in Fig. 2, the method is used in the network element device 10 of the mobile communication system shown in Fig. 1 , Can include the following steps:

Step 201: The network element device determines the downlink control information DCI for scheduling the data channel of the primary cell;

Step 202: The network element device sends the physical downlink control channel PDCCH that carries the DCI in the scheduling cell.

The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells.

In the embodiment of the present disclosure, the scheduling cell is a cell that carries the cross-carrier scheduling DCI of the scheduled cell (ie, the primary cell) and the self-scheduled DCI of the cell. The scheduling cell may include one or more secondary cells; the scheduled cell ( That is, the primary cell may include a primary cell (Primary Cell, PCell) in a primary cell group (Master Cell Group, MCG) or a primary secondary cell (Primary Secondary Cell, PSCell) in a secondary cell group (Secondary Cell Group, SCG). The network element device can select a secondary cell configured to support cross-carrier scheduling as the scheduling cell, and send the PDCCH carrying the DCI for scheduling the data channel of the primary cell to the terminal device through the secondary cell to schedule resources such as PDSCH/PUSCH in the primary cell. Perform configuration information such as data transmission of the terminal device or bearer layer mapping structure; thus, the PDCCH capacity of the primary cell can be increased.

It should be noted that the network element device sends the PDCCH carrying the DCI for scheduling the data channel of the primary cell to the terminal device through the secondary cell; at the same time, the PDCCH still exists on the primary cell, that is, the network element device can send the primary cell through the primary cell and the secondary cell. PDCCH.

For convenience of expression, the DCI for scheduling the data channel of the primary cell is referred to as the DCI of the primary cell, and the DCI for scheduling the data channel of the scheduling cell is referred to as the DCI of the scheduling cell.

In a possible implementation, the length of the DCI of the primary cell, the length of the fields in the DCI of the primary cell, etc. can be determined by the scheduling cell (that is, the secondary cell that transmits the PDCCH carrying the DCI) or other secondary cells (that is, other secondary cells other than the scheduling cell). The secondary cell) is determined by high-level signaling; wherein, the fields in the primary cell DCI may include at least one of a partial bandwidth BWP indicator, a transmission configuration indicator TCI, an uplink UL indicator, and a supplementary uplink SUL indicator. Determine the length of the DCI for scheduling the data channel of the primary cell or the length of the field in the DCI through the high-level signaling of the scheduling cell or other secondary cells, which can make full use of existing resources and flexibly configure DCI as needed, simplifying the process of configuring DCI .

Among them, "length" can be embodied by "number of bits", that is, longer length means more bits.

In a possible implementation manner, the determining the DCI of the data channel of the scheduling primary cell includes: according to the high-level signaling of the scheduling cell, or another secondary cell corresponding to the same CIF value as the primary cell. High layer signaling determines the length of the DCI and/or the length of the field in the DCI.

In the embodiment of the present disclosure, the control information CIF_present for the scheduling cell can be set to indicate whether the CIF field is set in the DCI of the primary cell carried in the PDCCH sent by the scheduling cell. When the scheduling cell CIF_present is set to True, that is, when the CIF field is set, the DCI of the primary cell is carried in the PDCCH of the scheduling cell. At this time, the CIF field in the DCI is configured by high-level signaling, and the value range is 0-7 ; Among them, the CIF field is used to indicate that the DCI is the DCI for scheduling the data channel of the primary cell.

It should be noted that the value of the CIF field in the DCI of the primary cell can be shared with other secondary cells, that is, the value of the CIF field corresponding to the primary cell can be exclusive to the non-primary cell, for example, the value of the CIF field corresponding to the primary cell The value of the CIF field is 1. At this time, the value of the CIF field corresponding to other secondary cells may also be 1.

Exemplarily, when a CIF field is set in the DCI of the primary cell carried in the PDCCH sent by the scheduling cell, it can be based on the high-level signaling of the scheduling cell, or another alternative that corresponds to the same CIF value as the primary cell. The high-level signaling of a secondary cell determines the length of the DCI of the primary cell and/or the length of the field in the DCI. When the scheduling cell CIF_present is set to Fasle, that is, when the CIF field is not set, the length of the DCI of the primary cell and/or the length of the field in the DCI can be determined according to the high-level signaling of the scheduling cell.

In a possible implementation manner, the length of the DCI is determined according to the high-level signaling of the scheduling cell or the high-level signaling of another secondary cell corresponding to the same CIF value as the primary cell. /Or the length of the field in the DCI includes: in the case that the CIF value corresponding to the DCI is not 0, determining the primary cell according to the higher layer signaling of another secondary cell corresponding to the same CIF value as the primary cell The length of the cell DCI and/or the length of the field in the DCI.

In the embodiment of the present disclosure, when the DCI carried in the PDCCH sent by the scheduling cell is set with the CIF field, if the primary cell and other secondary cells (second secondary cells) share a CIF value (and the CIF is not 0), Then the length of the DCI of the primary cell and the length of each field depends on the high-level signaling configuration of the secondary secondary cell. The primary cell and the secondary secondary cell share the number of blind PDCCH checks of the secondary secondary cell. Element, CCE) number and search space.

In a possible implementation manner, the length of the DCI is determined according to the high-level signaling of the scheduling cell or the high-level signaling of another secondary cell corresponding to the same CIF value as the primary cell. /Or the length of the field in the DCI includes: determining the length of the DCI according to the high-level signaling of the scheduling cell when the CIF field is not set in the DCI or the CIF value corresponding to the DCI is 0 And/or the length of the field in the DCI.

In the embodiment of the present disclosure, if the CIF field is not set in the DCI carried in the PDCCH sent by the scheduling cell, the length of the primary cell DCI and the length of each field depend on the high-level signaling configuration of the scheduling cell. The scheduling cell shares the number of blind PDCCH checks, the number of non-coincident CCEs, and the search space. In the case where a CIF field is set in the DCI carried in the PDCCH sent by the scheduling cell, if the CIF value corresponding to the primary cell is 0, the length of the DCI of the primary cell and the length of each field depends on the high-level signaling configuration of the scheduling cell.

In a possible implementation manner, the method further includes: in the case that the CIF field is not set in the DCI, indicating that the DCI corresponds to the DCI through a primary cell dedicated search space and/or a set of control resource elements Main cell.

In the embodiment of the present disclosure, when the CIF field is not set in the DCI carried in the PDCCH sent by the scheduling cell, the DCI carried in the PDCCH sent by the scheduling cell is distinguished from the primary cell through the primary cell dedicated search space and the control resource unit set CORESET The DCI is also the DCI of the secondary cell.

Based on this, the embodiments of the present disclosure also provide a solution for indicating fields in the DCI during cross-carrier scheduling of the primary cell. Among them, the fields in the DCI may include: partial bandwidth BWP indication, transmission configuration indication TCI, uplink UL indication, supplementary uplink SUL indication and other fields.

In a possible implementation manner, the determining the downlink control information DCI for scheduling the data channel of the primary cell further includes: when the number of BWP indication bits in the DCI of the scheduling cell is 0, setting the BWP indication bits in the DCI of the primary cell The number is 1 or 2, to indicate that the BWP handover of the primary cell is not to be performed; when the number of BWP indication bits in the DCI of the scheduling cell is 1, the number of BWP indication bits in the DCI of the primary cell is 2 to indicate The BWP of the primary cell is switched to the default BWP or a BWP index configured by high-level signaling of the primary cell.

In the embodiment of the present disclosure, the number of BWP indication bits can be 0, 1, and 2. If the number of bits indicated by the BWP in the DCI of the scheduling cell is less than the number of bits indicated by the BWP in the DCI of the primary cell (for example, the BWP indication in the DCI of the scheduling cell) The number of bits indicated by the BWP in the DCI of the primary cell is 0, the number of bits indicated by the BWP in the DCI of the primary cell is 1; the number of bits indicated by the BWP in the DCI of the scheduling cell is 0, and the number of bits indicated by the BWP in the DCI of the primary cell is 2; the bits indicated by the BWP in the DCI of the scheduling cell The number is 1, the number of bits indicated by the BWP in the DCI of the primary cell is 2), if the number of bits indicated by the BWP in the DCI of the scheduling cell is 0, the BWP of the primary cell does not switch; if the number of bits indicated by the BWP in the DCI of the scheduling cell is 1, then The BWP of the primary cell is switched to the default BWP, or to a BWP index configured by the high-level signaling of the primary cell. Correspondingly, if the number of bits indicated by the BWP in the DCI of the scheduling cell is greater than the number of bits indicated by the BWP in the DCI of the primary cell (for example, the number of bits indicated by the BWP in the DCI of the scheduling cell is 1, and the number of bits indicated by the BWP in the DCI of the primary cell is 0; The number of bits indicated by the BWP in the DCI of the scheduling cell is 2, the number of bits indicated by the BWP in the DCI of the primary cell is 0; the number of bits indicated by the BWP in the DCI of the scheduling cell is 2, and the number of bits indicated by the BWP in the DCI of the primary cell is 1), then Take the low bit according to the method in the related art. Further, the BWP indicates to restrict the secondary cell from scheduling the primary cell, does not support the DCI switching BWP, and only operates on the currently activated BWP of the primary cell.

In a possible implementation manner, the determining the downlink control information DCI of the data channel of the scheduling primary cell further includes: making the length of the TCI in the DCI of the primary cell greater than the length of the corresponding TCI in the DCI of the scheduling cell to indicate the use of physical The TCI of the lowest index of the downlink shared channel PDSCH; the length of the TCI in the DCI of the primary cell is made smaller than the length of the corresponding TCI in the DCI of the scheduling cell to indicate that the TCI in the DCI of the primary cell is ignored.

In the embodiments of the present disclosure, if the number of TCI bits in the DCI of the scheduling cell is less than the number of TCI bits in the DCI of the primary cell, that is, the primary cell is scheduled to BWP with TCI enabled, the TCI with the lowest PDSCH index is used; if the TCI bits in the DCI of the scheduling cell If the number is greater than the number of TCI bits in the DCI of the primary cell, and the primary cell is scheduled to BWP to disable TCI, it is instructed to ignore the TCI.

In a possible implementation manner, the determining the downlink control information DCI for scheduling the data channel of the primary cell further includes: making the length of the UL indication and/or SUL indication in the DCI of the primary cell greater than the corresponding UL indication in the DCI of the scheduling cell And/or the length of the SUL indicator to indicate the scheduling of the carrier configured with the physical uplink control channel PUCCH; make the length of the UL indicator and/or SUL indicator in the DCI of the primary cell smaller than the corresponding UL indicator and/or SUL indicator in the DCI of the scheduling cell The length of, to indicate the scheduling of the carrier configured with the physical uplink shared channel PUSCH.

In the embodiments of the present disclosure, if the number of bits in the UL indicator and/or SUL indicator in the DCI of the scheduling cell is less than the number of bits in the L indicator and/or SUL indicator in the DCI of the primary cell (for example, the number of UL indicators or SUL indicators is 0, the number of bits in the primary The number of cell bits is 1), indicating fixed scheduling of the carrier configured with PUCCH; if the number of bits indicated by UL and/or SUL in the DCI of the scheduling cell is greater than the number of bits indicated by L and/or SUL in the DCI of the primary cell (e.g., UL The indication or SUL indication bit number is 1, the primary cell bit number is 0), indicating that only the carriers configured with PUSCH are scheduled, and this field is ignored.

It should be noted that although the foregoing embodiment is taken as an example to introduce the method for cross-carrier scheduling of the primary cell downlink control information of the secondary cell as described above, those skilled in the art can understand that the present disclosure should not be limited to this. In fact, the user can completely flexibly set various implementation modes according to actual application scenarios, as long as it conforms to the technical solution of the present disclosure.

In this way, in the embodiments of the present disclosure, the DCI for scheduling the data channel of the primary cell is determined; and the physical downlink control channel PDCCH carrying the DCI is sent in the scheduling cell; the scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/ Or the length of the field in the DCI is determined by the high-level signaling of the scheduling cell or other secondary cells, which increases the PDCCH capacity on the primary cell; effectively solving the problem of limited PDCCH capacity on the primary cell.

FIG. 3 shows a flowchart of a method for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell according to an embodiment of the present disclosure; as shown in FIG. 3, the method is used in the terminal device 20 of the mobile communication system shown in FIG. 1, It can include the following steps:

Step 301: The terminal device receives the downlink control information DCI of the data channel of the scheduling primary cell, and the DCI is carried in the physical downlink control channel PDCCH sent by the scheduling cell;

Step 302: The terminal device decodes the DCI to obtain indication information;

The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells.

In the embodiment of the present disclosure, the terminal device can monitor the PDCCH of the primary cell on the secondary cell. Exemplarily, the terminal device communicates with the primary cell, for example, the terminal device and the primary cell transmit uplink service data or downlink service data. In the case of insufficient PDCCH resources in the primary cell, the network element device transmits part of the DCI of the primary cell on the PDCCH of the secondary cell. The terminal device receives the DCI by monitoring the PDCCH; the terminal device can decode the DCI to obtain the indication information; and then can determine the DCI of the primary cell through the indication information, and perform scheduling according to the indication information; thus, the PDCCH capacity can be increased .

In a possible implementation, in step 302, the terminal device decodes the DCI to obtain indication information, which may include: the terminal device determines that the DCI belongs to the primary cell according to the carrier indicator field CIF in the DCI .

In the embodiment of the present disclosure, when the terminal device decodes the received DCI, if there is a CIF field in the DCI, it judges whether the DCI is the DCI of the primary cell according to the CIF value corresponding to the primary cell; When the value of the CIF field in the DCI received by the device is the same as the value of the CIF field corresponding to the primary cell configured through high-layer signaling, it is determined that the DCI is the DCI for scheduling the data channel of the primary cell.

In a possible implementation manner, in step 302, the terminal device decodes the DCI to obtain the indication information, and further includes: the terminal device determines the specific search space and/or control resource unit set of the primary cell in the DCI. The DCI belongs to the primary cell.

In the embodiments of the present disclosure, when the terminal device decodes the received DCI, if there is no CIF field in the DCI, the terminal device can determine that the DCI is the scheduling primary cell data through the primary cell dedicated search space and/or control resource unit set The DCI of the channel.

Based on this, the embodiment of the present disclosure also provides a solution to interpret the downlink control information when the secondary cell cross-carrier schedules the primary cell. Furthermore, it provides the length of the corresponding field in the DCI of the scheduled cell and the DCI of the scheduled cell (ie, the primary cell). Different interpretation schemes at the same time.

In a possible implementation manner, in step 302, the terminal device decodes the DCI to obtain indication information, including: the terminal device decodes the primary cell DCI to obtain a partial bandwidth BWP indication; and the BWP indication bit in the scheduling cell DCI When the number is 0, and the number of bits indicated by the BWP in the DCI of the primary cell is 1 or 2, the BWP handover of the primary cell is not performed; when the number of BWP indicators in the DCI of the scheduling cell is 1, and The number of bits indicated by the BWP in the DCI of the primary cell is 2, and the BWP of the primary cell is switched to the default BWP or a BWP index configured by high-level signaling of the primary cell.

In a possible implementation manner, in step 302, the terminal device decodes the DCI to obtain the indication information, including: the terminal device decodes the primary cell DCI to obtain the transmission configuration indication TCI; in the primary cell DCI, the length of the TCI is greater than the total length. In the case of the length of the corresponding TCI in the scheduling cell DCI, the TCI with the lowest index of the physical downlink shared channel PDSCH is used; in the case where the length of the TCI in the primary cell DCI is less than the length of the corresponding TCI in the scheduling cell DCI, the primary cell is ignored TCI in DCI.

In a possible implementation manner, in step 302, the terminal device decodes the DCI to obtain indication information, including: the terminal device decodes the primary cell DCI to obtain an uplink UL indication and/or a supplementary uplink SUL indication; In the case where the length of the UL indication and/or SUL indication in the DCI of the primary cell is greater than the length of the corresponding UL indication and/or SUL indication in the DCI of the scheduling cell, scheduling the carrier configured with the physical uplink control channel PUCCH; in the primary cell DCI When the length of the UL indication and/or SUL indication is less than the length of the corresponding UL indication and/or SUL indication in the DCI of the scheduling cell, the carrier configured with the physical uplink shared channel PUSCH is scheduled.

It should be noted that, for the terminal device to interpret each field in the DCI, reference may be made to the relevant details of the network element device determining the indication information of each field in the DCI in the above embodiment, which will not be repeated here.

Fig. 4 shows a schematic structural diagram of a network element device for cross-carrier scheduling of primary cell downlink control information of a secondary cell according to an embodiment of the present disclosure; as shown in Fig. 4, the network element device includes: a determining module 41 for Determine the downlink control information DCI for scheduling the data channel of the primary cell; the sending module 42 is configured to send the physical downlink control channel PDCCH carrying the DCI in the scheduling cell; wherein, the scheduling cell is a secondary cell that supports cross-carrier scheduling, and the The length of the DCI and/or the length of the field in the DCI is determined by the high-level signaling of the scheduling cell or other secondary cells.

In a possible implementation manner, the determining module 41 includes a first determining unit, configured to: according to the high-level signaling of the scheduling cell, or another secondary cell corresponding to the same CIF value as the primary cell The high-level signaling of the cell determines the length of the DCI and/or the length of the field in the DCI.

In a possible implementation manner, the first determining unit includes a first determining subunit, configured to: in the case that the CIF value corresponding to the DCI is not 0, according to the same as the primary cell corresponding to the same The high-layer signaling of another secondary cell with a CIF value of 1 determines the length of the DCI and/or the length of the field in the DCI;

In a possible implementation manner, the first determining unit includes a second determining subunit, configured to: in the case that the CIF field is not set in the DCI or the CIF value corresponding to the DCI is 0, according to The high-level signaling of the scheduling cell determines the length of the DCI and/or the length of the field in the DCI.

In a possible implementation manner, the determining module 41 is further configured to: in the case where the CIF field is not set in the DCI, indicate the DCI through the primary cell dedicated search space and/or the set of control resource elements Corresponds to the primary cell.

In a possible implementation manner, the fields in the DCI include at least one of a partial bandwidth BWP indicator, a transmission configuration indicator TCI, an uplink UL indicator, and a supplemental uplink SUL indicator.

In a possible implementation manner, the determining module 41 further includes a second determining unit, configured to: when the number of BWP indication bits in the DCI of the scheduling cell data channel is 0, make the scheduling primary cell data channel The number of bits indicated by the BWP in the DCI is 1 or 2, to indicate that the BWP handover of the primary cell is not performed; when the number of bits indicated by the BWP in the DCI of the scheduling scheduling cell data channel is 1, the scheduling of the primary cell data channel The number of bits indicated by the BWP in the DCI is 2 to indicate that the BWP of the primary cell is switched to the default BWP or a BWP index configured by the high-level signaling of the primary cell.

In a possible implementation, the determining module 41 further includes a third determining unit, configured to make the length of the TCI in the DCI of the data channel of the scheduling primary cell greater than the length of the corresponding TCI in the DCI of the data channel of the scheduling and scheduling cell , To indicate the use of the TCI with the lowest index of the physical downlink shared channel PDSCH; make the length of the TCI in the DCI of the data channel of the scheduling primary cell smaller than the length of the corresponding TCI in the DCI of the data channel of the scheduling cell, to indicate that the DCI of the data channel of the scheduling primary cell is ignored In TCI.

In a possible implementation manner, the determining module 41 further includes a fourth determining unit, configured to make the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell greater than that of the data channel of the scheduling cell. The length of the corresponding UL indicator and/or SUL indicator in the DCI is used to indicate the scheduling of the carrier configured with the physical uplink control channel PUCCH; the length of the UL indicator and/or SUL indicator in the DCI for scheduling the primary cell data channel is less than that of the scheduling and scheduling cell data channel The length of the corresponding UL indicator and/or SUL indicator in the DCI indicates the scheduling of the carrier configured with the physical uplink shared channel PUSCH.

FIG. 5 shows a schematic structural diagram of a terminal device for cross-carrier scheduling of primary cell downlink control information in a secondary cell according to an embodiment of the present disclosure; as shown in FIG. 5, a receiving module 51 is configured to receive downlink scheduling of a primary cell data channel Control information DCI, the DCI is carried in the physical downlink control channel PDCCH sent by the scheduling cell; the decoding module 52 is used to decode the DCI to obtain indication information; wherein, the scheduling cell is a secondary cell that supports cross-carrier scheduling, The length of the DCI and/or the length of the fields in the DCI are determined by high-level signaling of the scheduling cell or other secondary cells.

In a possible implementation manner, the decoding module 52 includes a first decoding unit configured to determine that the DCI belongs to the primary cell according to the carrier indicator field CIF in the DCI.

In a possible implementation manner, the decoding module 52 further includes a second decoding unit, configured to determine that the DCI belongs to the DCI according to the primary cell dedicated search space and/or the set of control resource units in the DCI. The main cell.

In a possible implementation manner, the decoding module 52 further includes a second decoding unit for: decoding the DCI to obtain a partial bandwidth BWP indication; and BWP indication bits in the DCI of the data channel of the scheduling cell If the number is 0 and the number of bits indicated by the BWP in the DCI of the scheduling primary cell data channel is 1 or 2, the BWP handover of the primary cell is not performed; the number of BWP indicators in the DCI of the scheduling and scheduling cell data channel is 1 And when the number of bits indicated by the BWP in the DCI of the scheduling primary cell data channel is 2, the BWP of the primary cell is switched to the default BWP or a BWP index configured by the high-level signaling of the primary cell.

In a possible implementation manner, the decoding module 52 further includes a third decoding unit for: decoding the DCI to obtain a transmission configuration indication TCI; in the DCI of the scheduling primary cell data channel, the length of the TCI is greater than that of the scheduling When the DCI of the data channel of the scheduling cell corresponds to the length of the TCI, the TCI with the lowest index of the physical downlink shared channel PDSCH is used; the length of the TCI in the DCI of the data channel of the scheduling primary cell is smaller than the length of the corresponding TCI in the DCI of the data channel of the scheduling scheduling cell In the case of length, the TCI in the DCI of the data channel of the scheduling primary cell is ignored.

In a possible implementation manner, the decoding module 52 further includes a fourth decoding unit for: decoding the DCI to obtain an uplink UL indication and/or a supplementary uplink SUL indication; When the length of the UL indicator and/or SUL indicator in the DCI of the data channel is greater than the length of the corresponding UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling scheduling cell, the carrier configured with the physical uplink control channel PUCCH is scheduled; When the length of the UL indicator and/or SUL indicator in the DCI of the primary cell data channel is less than the length of the corresponding UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling scheduling cell, the carrier configured with the physical uplink shared channel PUSCH is scheduled.

FIG. 6 shows a block diagram of a terminal device 600 for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell according to an embodiment of the present disclosure. 6, the terminal device 600 may include one or more of the following components: a processing component 602, a memory 604, a power supply component 606, a multimedia component 608, an audio component 610, an input/output (I/O) interface 612, and a sensor component 614 , And the communication component 616.

The processing component 602 generally controls the overall operations of the terminal device 600, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to complete all or part of the steps of the foregoing method. In addition, the processing component 602 may include one or more modules to facilitate the interaction between the processing component 602 and other components. For example, the processing component 602 may include a multimedia module to facilitate the interaction between the multimedia component 608 and the processing component 602.

The memory 604 is configured to store various types of data to support operations in the terminal device 600. Examples of these data include instructions for any application or method operated on the terminal device 600, contact data, phone book data, messages, pictures, videos, etc. The memory 604 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable and Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.

The power supply component 606 provides power for various components of the terminal device 600. The power supply component 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the terminal device 600.

The multimedia component 608 includes a screen that provides an output interface between the terminal device 600 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure related to the touch or slide operation. In some embodiments, the multimedia component 608 includes a front camera and/or a rear camera. When the terminal device 600 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a microphone (MIC). When the terminal device 600 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 604 or sent via the communication component 616. In some embodiments, the audio component 610 further includes a speaker for outputting audio signals.

The I/O interface 612 provides an interface between the processing component 602 and a peripheral interface module. The aforementioned peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: home button, volume button, start button, and lock button.

The sensor component 614 includes one or more sensors for providing the terminal device 600 with state evaluation in various aspects. For example, the sensor component 614 can detect the open/close state of the terminal device 600 and the relative positioning of the components. For example, the component is the display and the keypad of the terminal device 600. The sensor component 614 can also detect the terminal device 600 or the terminal device 600. The position of the component changes, the presence or absence of contact between the user and the terminal device 600, the orientation or acceleration/deceleration of the terminal device 600, and the temperature change of the terminal device 600. The sensor component 614 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact. The sensor component 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 616 is configured to facilitate wired or wireless communication between the terminal device 600 and other devices. The terminal device 600 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, the terminal device 600 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field A programmable gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.

In an exemplary embodiment, there is also provided a non-volatile computer-readable storage medium, such as the memory 604 including computer program instructions, which can be executed by the processor 620 of the terminal device 600 to complete the foregoing method.

Fig. 7 shows a block diagram of a network element device 1900 for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell according to an embodiment of the present disclosure. For example, eNB in LTE system, gNB in 5G system, etc. 7, the network element device 1900 includes a processing component 1922, which further includes one or more processors, and a memory resource represented by a memory 1932, for storing instructions that can be executed by the processing component 1922, such as application programs. The application program stored in the memory 1932 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 1922 is configured to execute instructions to perform the above-described methods.

The network element device 1900 may also include a power supply component 1926 configured to perform power management of the network element device 1900, a wired or wireless network interface 1950 configured to connect the network element device 1900 to the network, and an input and output (I/O ) Interface 1958. The network element device 1900 may operate based on an operating system stored in the storage 1932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

In an exemplary embodiment, there is also provided a non-volatile computer-readable storage medium, such as the memory 1932 including computer program instructions, which can be executed by the processing component 1922 of the device 1900 to complete the foregoing method.

The present disclosure may be a system, method and/or computer program product. The computer program product may include a computer-readable storage medium loaded with computer-readable program instructions for enabling a processor to implement various aspects of the present disclosure.

The computer-readable storage medium may be a tangible device that can hold and store instructions used by the instruction execution device. The computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) Or flash memory), static random access memory (SRAM), portable compact disk read-only memory (CD-ROM), digital versatile disk (DVD), memory stick, floppy disk, mechanical encoding device, such as a printer with instructions stored thereon The protruding structure in the hole card or the groove, and any suitable combination of the above. The computer-readable storage medium used here is not interpreted as the instantaneous signal itself, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (for example, light pulses through fiber optic cables), or through wires Transmission of electrical signals.

The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to various computing/processing devices, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, optical fiber transmission, wireless transmission, routers, firewalls, switches, gateway computers, and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network, and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing/processing device .

The computer program instructions used to perform the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or in one or more programming languages. Source code or object code written in any combination, the programming language includes object-oriented programming languages such as Smalltalk, C++, etc., and conventional procedural programming languages such as "C" language or similar programming languages. Computer-readable program instructions can be executed entirely on the user's computer, partly on the user's computer, executed as a stand-alone software package, partly on the user's computer and partly executed on a remote computer, or entirely on the remote computer or server carried out. In the case of a remote computer, the remote computer can be connected to the user's computer through any kind of network-including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (for example, using an Internet service provider to connect to the user's computer) connection). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), can be customized by using the status information of the computer-readable program instructions. The computer-readable program instructions are executed to realize various aspects of the present disclosure.

Here, various aspects of the present disclosure are described with reference to flowcharts and/or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each block of the flowcharts and/or block diagrams, and combinations of blocks in the flowcharts and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine that makes these instructions when executed by the processor of the computer or other programmable data processing device , A device that implements the functions/actions specified in one or more blocks in the flowcharts and/or block diagrams is produced. It is also possible to store these computer-readable program instructions in a computer-readable storage medium. These instructions make computers, programmable data processing apparatuses, and/or other devices work in a specific manner. Thus, the computer-readable medium storing the instructions includes An article of manufacture, which includes instructions for implementing various aspects of the functions/actions specified in one or more blocks in the flowcharts and/or block diagrams.

It is also possible to load computer-readable program instructions on a computer, other programmable data processing device, or other equipment, so that a series of operation steps are executed on the computer, other programmable data processing device, or other equipment to produce a computer-implemented process , So that the instructions executed on the computer, other programmable data processing apparatus, or other equipment realize the functions/actions specified in one or more blocks in the flowcharts and/or block diagrams.

The flowcharts and block diagrams in the accompanying drawings show the possible implementation architecture, functions, and operations of the system, method, and computer program product according to multiple embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, program segment, or part of an instruction, and the module, program segment, or part of an instruction contains one or more components for realizing the specified logical function. Executable instructions. In some alternative implementations, the functions marked in the block may also occur in a different order from the order marked in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, or they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and/or flowchart, and the combination of the blocks in the block diagram and/or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or actions Or it can be realized by a combination of dedicated hardware and computer instructions.

The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Without departing from the scope and spirit of the illustrated embodiments, many modifications and changes are obvious to those of ordinary skill in the art. The choice of terms used herein is intended to best explain the principles, practical applications, or technical improvements in the market of the various embodiments, or to enable other ordinary skilled in the art to understand the various embodiments disclosed herein.

Claims (20)

A method for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell, which is characterized in that it includes: Determine the downlink control information DCI for scheduling the data channel of the primary cell; Sending the physical downlink control channel PDCCH carrying the DCI in the scheduling cell; The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells. The method according to claim 1, wherein the determining the DCI for scheduling the data channel of the primary cell comprises: Determine the length of the DCI and/or the length of the field in the DCI according to the high-level signaling of the scheduling cell or the high-level signaling of another secondary cell corresponding to the same CIF value as the primary cell. The method according to claim 2, characterized in that, said determining said according to the high-level signaling of the scheduling cell or the high-level signaling of another secondary cell corresponding to the same CIF value as the primary cell The length of the DCI and/or the length of the field in the DCI includes: In the case that the CIF value corresponding to the DCI is not 0, the length of the DCI and/or the fields in the DCI are determined according to higher layer signaling of another secondary cell corresponding to the same CIF value as the primary cell length. The method according to claim 2, characterized in that, said determining said according to the high-level signaling of the scheduling cell or the high-level signaling of another secondary cell corresponding to the same CIF value as the primary cell The length of the DCI and/or the length of the field in the DCI includes: In the case that the CIF field is not set in the DCI or the CIF value corresponding to the DCI is 0, the length of the DCI and/or the length of the field in the DCI is determined according to the high-level signaling of the scheduling cell. The method according to claim 1, wherein the method further comprises: In the case that the CIF field is not set in the DCI, it is indicated that the DCI corresponds to the primary cell through the primary cell dedicated search space and/or the control resource unit set. The method according to any one of claims 1-5, wherein the fields in the DCI include at least one of a partial bandwidth BWP indicator, a transmission configuration indicator TCI, an uplink UL indicator, and a supplementary uplink SUL indicator. One item. The method according to claim 6, wherein the determining the DCI for scheduling the data channel of the primary cell further comprises: When the number of BWP indication bits in the DCI of the data channel of the scheduling scheduling cell is 0, the number of BWP indication bits in the DCI of the DCI of the scheduling primary cell data channel is set to 1 or 2 to indicate that the BWP handover of the primary cell is not to be performed; When the number of BWP indication bits in the DCI of the data channel of the scheduling scheduling cell is 1, the number of BWP indication bits in the DCI of the DCI of the scheduling primary cell data channel is set to 2, to indicate that the BWP of the primary cell is switched to the default BWP Or a BWP index configured by high-level signaling of the primary cell. The method according to claim 6, wherein the determining the downlink control information DCI for scheduling the data channel of the primary cell further comprises: Make the length of the TCI in the DCI of the data channel of the scheduling primary cell greater than the length of the corresponding TCI in the DCI of the data channel of the scheduling and scheduling cell to indicate the use of the TCI with the lowest index of the physical downlink shared channel PDSCH; The length of the TCI in the DCI of the data channel of the scheduling primary cell is smaller than the length of the corresponding TCI in the DCI of the data channel of the scheduling scheduling cell, so as to indicate that the TCI in the DCI of the data channel of the scheduling primary cell is ignored. The method according to claim 6, wherein the determining the downlink control information DCI for scheduling the data channel of the primary cell further comprises: Make the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell greater than the length of the corresponding UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling cell to indicate the scheduling of the carrier configured with the physical uplink control channel PUCCH ； Make the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell smaller than the length of the corresponding UL indicator and/or SUL indicator of the DCI of the data channel of the scheduling cell to indicate the scheduling of the carrier configured with the physical uplink shared channel PUSCH . A method for cross-carrier scheduling of downlink control information of a primary cell by a secondary cell, which is characterized in that it includes: Receiving the downlink control information DCI of the data channel of the scheduling primary cell, the DCI being carried in the physical downlink control channel PDCCH sent by the scheduling cell; Decode the DCI to obtain indication information; The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells. The method according to claim 10, wherein said decoding said DCI to obtain indication information comprises: According to the carrier indicator field CIF in the DCI, it is determined that the DCI belongs to the primary cell. The method according to claim 10, wherein said decoding said DCI to obtain indication information, further comprising: According to the primary cell dedicated search space and/or control resource unit set in the DCI, it is determined that the DCI belongs to the primary cell. The method according to claim 10, wherein said decoding said DCI to obtain indication information comprises: Decode the DCI to obtain a partial bandwidth BWP indication; When the number of BWP indication bits in the DCI of the scheduling cell data channel is 0, and the number of BWP indication bits in the DCI of the scheduling primary cell data channel is 1 or 2, the BWP handover of the primary cell is not performed; When the number of BWP indication bits in the DCI of the scheduling cell data channel is 1, and the number of BWP indication bits in the DCI of the scheduling primary cell data channel is 2, the BWP of the primary cell is switched to the default BWP or the primary A BWP index configured by the high-level signaling of the cell. The method according to claim 10, wherein said decoding said DCI to obtain indication information comprises: Decode the DCI to obtain a transmission configuration indication TCI; When the length of the TCI in the DCI of the data channel of the scheduling primary cell is greater than the length of the corresponding TCI in the DCI of the data channel of the scheduling and scheduling cell, the TCI with the lowest index of the physical downlink shared channel PDSCH is used; In the case where the length of the TCI in the DCI of the scheduling primary cell data channel is less than the length of the corresponding TCI in the DCI of the scheduling scheduling cell data channel, the TCI in the DCI of the scheduling primary cell data channel is ignored. The method according to claim 10, wherein said decoding said DCI to obtain indication information comprises: Decoding the DCI to obtain an uplink UL indication and/or a supplementary uplink SUL indication; In the case that the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell is greater than the length of the corresponding UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling scheduling cell, the scheduling is configured for the physical uplink control channel PUCCH Carrier In the case that the length of the UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling primary cell is less than the length of the corresponding UL indicator and/or SUL indicator in the DCI of the data channel of the scheduling scheduling cell, the scheduling of the physical uplink shared channel PUSCH is configured. Carrier. A network element device, characterized in that, the network element device includes: The determining module is used to determine the downlink control information DCI for scheduling the data channel of the primary cell; A sending module, configured to send the physical downlink control channel PDCCH carrying the DCI in the scheduling cell; The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells. A terminal device, characterized in that, the terminal device includes: The receiving module is configured to receive the downlink control information DCI of the data channel of the scheduling primary cell, and the DCI is carried in the physical downlink control channel PDCCH sent by the scheduling cell; A decoding module for decoding the DCI to obtain indication information; The scheduling cell is a secondary cell that supports cross-carrier scheduling, and the length of the DCI and/or the length of the field in the DCI is determined by high-level signaling of the scheduling cell or other secondary cells. A network element device, characterized in that it includes: processor; A memory for storing processor executable instructions; Wherein, the processor is configured to implement the method according to any one of claims 1 to 9 when executing the executable instructions stored in the memory. A terminal device, characterized in that it comprises: processor; A memory for storing processor executable instructions; Wherein, the processor is configured to implement the method according to any one of claims 10 to 15 when executing executable instructions stored in the memory. A non-volatile computer-readable storage medium having computer program instructions stored thereon, wherein the computer program instructions implement the method according to any one of claims 1 to 15 when the computer program instructions are executed by a processor.

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