Communication method, apparatus, chip, storage medium, and program product

Abstract

Embodiments of the present application provide a kind of communication method, device, chip, storage medium and program product, belong to communication technical field.The communication method includes: receiving first information, first information is used to indicate the time-frequency resource being pre-empted on multiple active BWPs in target cell, target cell is the cell containing multiple frequency domain resources, or, target cell is the cell containing multiple carriers;According to first information, cancel the downlink reception on the time-frequency resource being pre-empted, wherein, time-frequency resource for downlink reception and the time-frequency resource being pre-empted exist overlap;Or, according to first information, cancel uplink transmission, time-frequency resource for uplink transmission and the time-frequency resource being pre-empted exist overlap, the present application can realize the indication of pre-empted resource in multiple active BWP cell scene, to solve the transmission conflict between terminal equipment.

Description

[0001] Technical fields

[0002] This application relates to the field of communication technology, and in particular to a communication method, device, chip, storage medium and program product. Background Technology

[0003] In 5G technology, different carriers correspond to different cells, and the frequency domain resources of each cell or carrier are continuous.

[0004] In future 6G, different operators will have many fragmented spectrum resources. To flexibly utilize the spectrum resources of different operators, improve resource utilization and spectrum efficiency, simplify cell management, and reduce the overhead of common signaling, multiple discrete carriers / frequency domain resources can be regarded as a single cell. Each discrete carrier / frequency domain resource may have one active bandwidth part (BWP), so a cell has multiple active BWPs. Currently, there is a lack of solutions for resolving conflicts between terminal devices in this scenario, such as how to design preemption signaling and indicate resource preemption. Summary of the Invention

[0005] This application relates to a communication method, apparatus, chip, storage medium, and program product that solves the problem of resource contention among terminal devices.

[0006] In a first aspect, embodiments of this application provide a communication method, comprising: receiving first information, the first information indicating preempted time-frequency resources on multiple active BWPs in a target cell, the target cell being a cell containing multiple frequency domain resources, or the target cell being a cell containing multiple carriers; canceling downlink reception on the preempted time-frequency resources according to the first information, wherein the time-frequency resources used for downlink reception overlap with the preempted time-frequency resources; or canceling uplink transmission according to the first information, wherein the time-frequency resources used for uplink transmission overlap with the preempted time-frequency resources.

[0007] This application addresses a target cell containing multiple active Base Station Views (BWPs). Data transmission from the current terminal device occurs on these BWPs. When another terminal device wishes to transmit on the same BWP, it must preempt the resources of the current terminal device. This application uses first information to indicate the time-frequency resource preempted by another terminal device, thereby causing the current terminal device to cancel its transmission on that time-frequency resource. This avoids interference between data transmissions from multiple terminal devices transmitting on the same time-frequency resource, thus improving communication reliability.

[0008] In some implementations, the first information is carried in the DCI, which includes multiple DL PI fields, wherein one DL PI field corresponds to one active BWP, and each of the multiple DL PI fields is used to indicate the preempted time-frequency resources on the corresponding active BWP.

[0009] This application can indicate the preempted time-frequency resources on multiple active BWPs by receiving multiple DL PI fields, so that the first terminal device can cancel downlink reception on the preempted time-frequency resources, thereby avoiding interference to other terminal devices performing downlink reception on the same time-frequency resources and improving decoding performance.

[0010] In some implementations, it also includes:

[0011] Receive second information, which includes multiple first identification information and multiple first location information;

[0012] Each first identifier information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell, and each first location information indicates the position of the DL PI field corresponding to the active BWP that has experienced time-frequency resource preemption in the first information.

[0013] This application enables the terminal device to quickly locate the position of the DL PI field corresponding to each activated BWP in the first information by receiving the second information, so that the terminal device can accurately identify the activated BWP corresponding to each DL PI field when the first information includes multiple DL PI fields.

[0014] In some implementations, the first information is carried in the DCI, which includes multiple UL CI fields, wherein one UL CI field corresponds to one active BWP, and each of the multiple UL CI fields is used to indicate the preempted time-frequency resources on the corresponding active BWP.

[0015] This application can indicate the time-frequency resources that the first terminal device has been preempted by receiving multiple UL CI fields. If the time-frequency resources used by the first terminal device for uplink transmission overlap with the preempted time-frequency resources, the first terminal device will cancel uplink transmission, thereby reducing interference caused by resource conflicts and improving decoding performance.

[0016] In some implementations, it also includes:

[0017] Receive third information, which includes at least one of multiple second identification information, multiple second location information, multiple first field length information, and / or multiple reference uplink area indication information;

[0018] Each second identification information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell; each second location information indicates the position of the UL CI field corresponding to an active BWP that has experienced time-frequency resource preemption in the first information; each first field length information indicates the field length of the UL CI field corresponding to an active BWP that has experienced time-frequency resource preemption; each reference uplink area indication information is used to indicate the time domain range and frequency domain range of the reference uplink area corresponding to an active BWP; and the preempted time-frequency resources are located within the reference uplink area.

[0019] This application, by using the received third information, enables the terminal device to accurately identify the active BWP corresponding to each UL CI field when the first information includes multiple UL CI fields. This avoids indicating the identification information of the active BWP in the first information, simplifies the content of the first information, reduces the overhead of control information, and achieves the purpose of indicating the preempted time and frequency resources on multiple active BWPs to the terminal device.

[0020] In some implementations, the first information is carried in the DCI. The first information includes multiple first sub-information. Each first sub-information contains a first field and a second field. The first field is used to indicate the identification information of the corresponding active BWP, and the second field is used to indicate the time-frequency resources that have been preempted on the corresponding active BWP.

[0021] This application enables the determination of the preempted time-frequency resources on each active BWP by receiving the first information. Since the first information includes a first field indicating the identification information of the active BWP, it is not necessary to receive additional information indicating the identification information of the active BWP, which is more flexible than indicating the BWP through the third information.

[0022] In some implementations, the first information includes multiple second fields that are all DL PI fields, or the first information includes multiple second fields that are all UL CI fields.

[0023] In some implementations, when the second field is a UL CI field, the following is also included:

[0024] Receive fourth information, which includes multiple second field length information and multiple reference uplink reference area information. Each second field length information indicates the field length of a second field, and each reference uplink reference area information indicates the time domain range and frequency domain range of the reference uplink area corresponding to a second field. The preempted time and frequency resources indicated by the second field are located within the reference uplink area.

[0025] By receiving the fourth information, this application enables the terminal device to accurately determine the second field based on the length information of the second field in the first information. Furthermore, by referring to the uplink reference area information, the terminal device can determine the time domain range and frequency domain range of the uplink transmission, thereby canceling the uplink transmission within that time domain range and frequency domain range, avoiding interference with the uplink transmission of other terminal devices, and further improving communication reliability.

[0026] In some implementations, the communication method further includes:

[0027] The actual transmit power of multiple uplink channels is determined based on the transmit power of multiple uplink channels on multiple active BWPs and the maximum transmit power of the device.

[0028] In the embodiments of this application, when the target cell contains multiple requests to activate BWP, the actual transmit power of multiple uplink channels can be determined. The actual transmit power enables the terminal device to achieve accurate power control when transmitting on multiple uplink channels, thereby reducing the power consumption of the terminal device.

[0029] In some implementations, the MPR corresponding to the device's maximum transmit power is the maximum value of the MPR corresponding to all uplink channels in the target cell.

[0030] In some implementations, the actual transmit power of multiple uplink channels is determined based on the transmit power of multiple uplink channels on multiple active BWPs and the maximum transmit power of the device, including:

[0031] When the sum of the transmit powers of multiple uplink channels is less than or equal to the maximum transmit power of the device, the actual transmit power of each uplink channel is determined based on the transmit power of the uplink channels transmitted on the multiple active BWPs; and / or,

[0032] If the sum of the transmit power of multiple uplink channels exceeds the maximum transmit power of the device, reduce the transmit power of the target uplink channel, which is one or more of the multiple uplink channels.

[0033] This application can determine the actual transmission power of multiple uplink channels by using different methods based on whether the sum of the transmission power of multiple uplink channels is less than or equal to the maximum transmission power of the device. This can accurately determine the transmission power used by the terminal device for uplink transmission, further improve the accuracy of power control, and thus reduce the power consumption of the terminal device.

[0034] In some implementations, the target uplink channel is determined based on priority information and / or transmission parameters corresponding to multiple uplink channels respectively;

[0035] The priority information includes at least one of the following: the service priority of the uplink channel, the priority of the content carried by the uplink channel, the priority of the frequency domain resources where the uplink channel is located, or the priority of the active BWP where the uplink channel is located. The transmission parameters include at least one of the following: MCS, bandwidth, and TB size.

[0036] In some implementations, reducing the transmit power of the target uplink channel includes:

[0037] Based on the power reduction factor, the transmit power of multiple uplink channels is reduced.

[0038] In this embodiment, since the same power reduction factor is used to reduce the transmit power of multiple uplink channels, signaling overhead can be saved, and the transmit power of multiple uplink channels can be reduced uniformly, which is simple and easy to implement. In addition, reducing the transmit power of multiple uplink channels can prevent the total transmit power of multiple uplink channels from exceeding the maximum transmit power of the device, thereby reducing the power consumption of the terminal device.

[0039] In some implementations, it also includes:

[0040] Receive the fifth message, which indicates the power reduction factor.

[0041] In some implementations, it also includes:

[0042] The power margin is determined based on the transmit power of multiple uplink channels on multiple active BWPs and the maximum transmit power of the device;

[0043] Send the sixth message, which includes power margin.

[0044] In some implementations, the multiple uplink channels include multiple PUSCHs, and a power margin is determined based on the transmit power of the multiple uplink channels on the multiple active BWPs and the maximum transmit power of the device, including:

[0045] The transmit power of multiple PUSCHs is summed to obtain the first total power;

[0046] The power margin is determined as the difference between the device's maximum transmit power and the sum of the first power.

[0047] In some implementations, the multiple uplink channels include PUSCH and PUCCH. For an active BWP in the target cell, a power margin is determined based on the transmit power of the multiple uplink channels on the multiple active BWPs and the maximum transmit power of the device, including:

[0048] The second total power is obtained by summing the transmit power of multiple PUSCHs and multiple PUCCHs.

[0049] The power margin is determined as the difference between the sum of the device's maximum transmit power and the second power.

[0050] The embodiments of this application can determine the power margin, so that the network device can determine the available power margin of the terminal device, which facilitates the network device to adjust the resource scheduling strategy according to the power margin, such as adjusting the number of allocated PRBs or adjusting the MCS, to achieve more efficient resource scheduling.

[0051] Secondly, embodiments of this application provide a communication method, including:

[0052] Send a first message, which is used to indicate the time-frequency resources that have been preempted on multiple active BWPs in the target cell. The target cell is a cell that contains multiple frequency domain resources, or the target cell is a cell that contains multiple carriers.

[0053] In some implementations, the first information is carried in the DCI, which includes multiple DL PI fields, wherein one DL PI field corresponds to one active BWP, and each of the multiple DL PI fields is used to indicate the preempted time-frequency resources on the corresponding active BWP.

[0054] In some implementations, it also includes:

[0055] Send a second message, which includes multiple first identification information and multiple first location information;

[0056] Each first identification information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell, and each first location information indicates the position of the DL PI field corresponding to an active BWP that has experienced time-frequency resource preemption in the first information.

[0057] In some implementations, the first information is carried in the DCI, which includes multiple UL CI fields, wherein one UL CI field corresponds to one active BWP, and each UL CI field is used to indicate the preempted time-frequency resources on the corresponding active BWP.

[0058] In some implementations, it also includes:

[0059] Send third information, which includes at least one of multiple second identification information, multiple second location information, multiple first field length information, and / or multiple reference uplink area indication information;

[0060] Each second identification information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell; each second location information indicates the position of the UL CI field corresponding to an active BWP that has experienced time-frequency resource preemption in the first information; each first field length information indicates the field length of the UL CI field corresponding to an active BWP that has experienced time-frequency resource preemption; each reference uplink area indication information is used to indicate the time domain range and frequency domain range of the reference uplink area corresponding to an active BWP; and the preempted time-frequency resources are located within the reference uplink area.

[0061] In some implementations, the first information is carried in the DCI. The first information includes multiple first sub-information. Each first sub-information contains a first field and a second field. The first field is used to indicate the identification information of the corresponding active BWP, and the second field is used to indicate the time-frequency resources that have been preempted on the corresponding active BWP.

[0062] In some implementations, when the second field is a UL CI field, the following is also included:

[0063] Send a fourth message, which includes multiple second field length information and multiple reference uplink reference area information. Each second field length information indicates the field length of a second field, and each reference uplink reference area information indicates the time domain range and frequency domain range of the reference uplink area corresponding to one of the second fields. The preempted time and frequency resources indicated by the second field are located within the corresponding reference uplink area.

[0064] Thirdly, embodiments of this application provide a communication device, including: a processor, a memory, and a communication interface;

[0065] Memory is used to store programs or instructions;

[0066] The communication interface is used to receive signals from other communication devices and transmit them to the processor, or to send signals from the processor to other communication devices;

[0067] The processor is used to execute programs or instructions to enable the communication device to implement the communication methods provided in the first or second aspect.

[0068] Fourthly, embodiments of this application provide a chip, which includes at least one processor and an interface circuit. The interface circuit and the at least one processor are connected, and the processor executes the communication method provided in the first or second aspect by running program instructions.

[0069] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the communication method provided in the first or second aspect.

[0070] In a sixth aspect, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the communication method provided in the first or second aspect.

[0071] For the beneficial effects of the embodiments of the second to sixth aspects and each aspect, please refer to the corresponding first aspect and the beneficial effects of the various embodiments of the first aspect, which will not be repeated here. Attached Figure Description

[0072] Figure 1 A schematic diagram of a downlink preemption indication provided for related technologies;

[0073] Figure 2 This is a schematic diagram illustrating an application scenario provided in an embodiment of this application;

[0074] Figure 3 This is an interactive illustration of a communication method provided in the embodiments of this application. Figure 1 ;

[0075] Figure 4 This is a schematic diagram of a preemptive situation where multiple activated BWPs are active, as provided in an embodiment of this application. Figure 1 ;

[0076] Figure 5 This is a schematic diagram of a target cell provided in the embodiments of this application. Figure 1 ;

[0077] Figure 6 This is a schematic diagram of a target cell provided in the embodiments of this application. Figure 2 ;

[0078] Figure 7 This is a schematic diagram of a reference downlink area pattern provided in an embodiment of this application;

[0079] Figure 8 This is an interactive illustration of a communication method provided in the embodiments of this application. Figure 2 ;

[0080] Figure 9 This is a schematic diagram of a preemptive situation where multiple activated BWPs are active, as provided in an embodiment of this application. Figure 2 ;

[0081] Figure 10 This is a schematic diagram of a preemptive situation where multiple activated BWPs are active, as provided in an embodiment of this application. Figure 3;

[0082] Figure 11 This is a schematic diagram of multiple uplink channels provided in the embodiments of this application. Figure 1 ;

[0083] Figure 12 This is a schematic diagram of multiple uplink channels provided in the embodiments of this application. Figure 2 ;

[0084] Figure 13 This is a schematic diagram of the hardware structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0085] First, a brief introduction to some of the terms used in the embodiments of this application:

[0086] 1. Terminal equipment:

[0087] The terminal devices in this application embodiment may include handheld devices, vehicle-mounted devices, etc., that have wireless communication capabilities. For example, some terminal devices include: mobile phones, tablets, PDAs, laptops, mobile internet devices (MIDs), wearable devices, VR (Virtual Reality) devices, AR (Augmented Reality) devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical surgery, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, wireless terminal devices in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in 5G networks, or future evolution of public terrestrial mobile communication networks. The embodiments of this application do not limit the terminal equipment, relay equipment, integrated access and backhaul, repeater, etc. in a land mobile network (PLMN).

[0088] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0089] The terminal equipment in this application embodiment can also be referred to as: user equipment (UE), mobile station (MS), mobile terminal equipment (MT), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, remote terminal equipment, mobile device, user terminal equipment, terminal equipment, wireless communication equipment, user agent, or user device, etc.

[0090] In this embodiment of the application, the device for implementing the function of the terminal device can be the terminal device itself; or it can be a device that enables the terminal device to implement the function, such as a chip system, which can be installed in the terminal device.

[0091] 2. Network equipment

[0092] The network device in this application embodiment can refer to a public network device, which is an interface device for terminal devices to access the Internet. It is also a form of radio station, which refers to a radio transceiver station that transmits information with terminal devices in a certain radio coverage area. It includes a base station (BS), which can also be called a base station device. It is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, in 2G networks, devices providing base station functionality include base transceiver stations (BTS); in 3G networks, devices providing base station functionality include NodeBs; in 4G networks, devices providing base station functionality include evolved NodeBs (eNBs); in wireless local area networks (WLANs), devices providing base station functionality are access points (APs); in 5G NR, devices providing base station functionality include gNBs and further evolved NodeBs (ng-eNBs). The gNB communicates with terminal devices using NR technology, while the ng-eNB communicates with terminal devices using evolved universal terrestrial radioaccess (E-UTRA) technology. Both gNBs and ng-eNBs can connect to the 5G core network. The network devices in this application embodiment also include devices providing base station functionality in future new data transmission systems.

[0093] In this embodiment of the application, the means for implementing the function of the network device can be the network device itself or a means that enables the network device to implement the function, such as a chip system, which can be installed in the network device.

[0094] 3. Cell / Carrier

[0095] A carrier refers to a specific frequency used to transmit signals in a channel. In existing technologies, each carrier corresponds to an independent cell, so one carrier can be equated with one cell. However, in the embodiments of this application, multiple carriers correspond to one target cell, wherein at any given time, only one BWP on a carrier is active, and the frequency domain resources on the carrier and the BWP are continuous.

[0096] A cell refers to a serving cell. Terminal devices without CA (Carrier Aggregation) can only transmit and receive data with one cell, while terminal devices with CA can transmit and receive data with multiple cells simultaneously, thus improving the throughput of the terminal device.

[0097] 4. Downlink preemption indication (DLPI)

[0098] DL PI is used to indicate the time-frequency resources preempted by a terminal device within a Reference Downlink Region (RDR). In this embodiment, DL can be applied in NR (Cellular Mobile Communication Network), where a sudden surge of traffic from one terminal device can preempt a portion of the resources already occupied by traffic being transmitted by other terminal devices, thereby interrupting the transmission of traffic on those preempted terminal devices on those resources.

[0099] DL PIs can be carried via DCI (Downlink Control Information), such as DC format 2_1. The listening period for DCI format 2_1 can be one, two, or four time slots. DCI format 2_1 carries multiple DLPIs, each of which can contain 14 bits. Therefore, the payload size of DCI format 2_1 is variable, ranging from a minimum of 14 bits to a maximum of 126 bits, configured by higher-layer signaling (RRC signaling). Each DL PI corresponds to one CC (Component Carrier), and this correspondence is configured by higher-layer signaling to indicate the DL PI on a CC.

[0100] Reference Figure 1 As shown, in Figure 1 The diagram shows a schematic of an RDR (Reference DL Region), which is an RDR (such as...). Figure 1 The time domain range and BWP shown include: time and frequency resources for eMBB (Enhance Mobile Broadband) service scheduling, time and frequency resources preempted by URLLC (Ultra Reliable & Low Latency Communication) service, and time and frequency resources occupied by the resource allocation unit. In addition, DL PI is transmitted using the group common control channel.

[0101] 5. Uplink Cancellation Indication (UL CI)

[0102] The UL CI is used to indicate conflicting resources between one UE's eMBB service and another UE's URLLC service. Upon receiving the UL CI, the terminal device determines, based on its own transmission resources and the conflicting resource information indicated by the UL CI, whether and how to cancel uplink transmission. The UL CI needs to be transmitted before the canceled PUSCH (Physical Uplink Shared Channel) resource and must be able to cancel uplink transmission within a short time; therefore, the interval between the UL CI and the start of the RUR (Reference UL Region) cannot be too long.

[0103] In addition, network devices will notify the corresponding terminal device via DCI that some or all of its requested resources have been cancelled, based on the uplink transmission priority. The terminal receiving the cancellation instruction contained in the DCI should cancel the corresponding uplink transmission in accordance with the UL CI. The DCI is in DCI format 2_4.

[0104] A DCI can carry multiple UL CIs, each UL CI containing multiple bits (configured by higher layers) corresponding to a carrier unit, where the correspondence is configured by higher layers.

[0105] 6. PHR (Power Headroom Report) mechanism

[0106] When a terminal device performs uplink transmission, in addition to completing physical layer power control, it needs to report its power headroom to the network. PH (Power Headroom) represents the difference between the PUSCH transmit power in the terminal's current BWP and its maximum allowed transmit power capability. When PH is positive, it indicates how much transmit power the terminal device has available beyond the power used by the current PUSCH transmission signal; when PH is negative, it indicates that the calculated current PUSCH transmission signal has exceeded the terminal device's maximum allowed transmit power. In related technologies, the PUSCH channel power is calculated by the power control formula and is not the actual transmit power of the terminal device, thus potentially exceeding the terminal device's maximum allowed transmit power. However, in this embodiment, the actual transmit power is calculated to prevent the PUSCH channel power from exceeding the terminal device's maximum allowed transmit power.

[0107] The technical solutions shown in this application will now be described in detail through specific embodiments. It should be noted that the following embodiments may exist independently or in combination with each other; identical or identical content will not be repeated in different embodiments.

[0108] This application includes multiple active BWPs in the target cell, and the terminal device transmits data on the multiple active BWPs. When another terminal device wants to transmit on the resources of this terminal device, this terminal device knows the location of the time-frequency resource that has been preempted through the first information received, and this terminal device cancels the transmission on the time-frequency resource. This avoids interference between the data transmissions of multiple terminal devices due to transmission on the same time-frequency resource, thereby improving communication reliability.

[0109] Reference Figure 2 This application provides an image of an application scenario. Figure 2 The system includes a terminal device 201 and a network device 202. The terminal device 201 receives first information from the network device 202 and cancels downlink reception or uplink transmission on the preempted time-frequency resources based on the first information.

[0110] Reference Figure 3 , Figure 3 This is a flowchart illustrating the steps of a communication method provided in an embodiment of this application. Figure 1 The communication method includes the following steps:

[0111] S301, the network device sends the first information, and the corresponding terminal device receives the first information.

[0112] In one embodiment, the target cell is a cell containing multiple frequency domain resources, each of which may have an active BWP. That is, the target cell is characterized by containing multiple active BWPs, and the target cell corresponds to a non-contiguous carrier.

[0113] In one embodiment, the target cell is a cell containing multiple carriers, with multiple BWPs configured on each carrier, but at most one BWP is active. This target cell can be referred to as a multi-carrier cell.

[0114] In this embodiment of the application, the first information is used to indicate the time-frequency resources that have been preempted on multiple active BWPs in the target cell.

[0115] The first information can be carried in the DCI. In this embodiment, when the first information includes multiple DL PI fields, the format of the DCI can be DCI 2_1, or a new DCI format can be introduced to indicate downlink preemption resources in a target cell that contains multiple carrier scenarios.

[0116] In one embodiment, the first information includes multiple DL PI fields, wherein one DL PI field corresponds to one active BWP, and each DL PI field is used to indicate the time-frequency resources that have been preempted on the corresponding active BWP.

[0117] For example, refer to Figure 4 The target cell includes three active BWPs: BWP1, BWP2, and BWP3. The first information includes three DL PI fields, with the structure being DL PI + DL PI + DL PI. Specifically, the first DL PI field indicates the preempted time-frequency resources on BWP1, the second DL PI field indicates the preempted time-frequency resources on BWP2, and the third DL PI field indicates the preempted time-frequency resources on BWP3.

[0118] Furthermore, multiple BWPs are configured on each carrier or frequency domain resource, where only one BWP is active on each carrier at any given time. (See reference...) Figure 4 For example, if the network needs to schedule eMBB services for terminal device a1 on BWP1, BWP2, and BWP3, then terminal device a1 needs to receive PDSCH (Physical Downlink Shared Channel) on BWP1, BWP2, and BWP3. The time-frequency resources occupied by terminal device a1 are as follows: Figure 4 As shown in the network area, the current network schedules higher-priority services, such as URLLC, to other terminal devices a2. This service needs to preempt the time-frequency resources occupied by terminal device a1 in BWP1, BWP2, and BWP3. It needs to indicate the preempted BWP time-frequency resources through the first information, such as... Figure 4 The black area in the middle indicates the time and frequency resources that have been preempted.

[0119] As can be seen, in the embodiments of this application, when the first information includes multiple DL PIs, the first information can indicate the time-frequency resources that have been preempted for each active BWP, thereby allowing the terminal device to discard downlink reception of the preempted time-frequency resources. For example, if the eMBB service resources originally scheduled for this terminal device can be preempted by other terminal devices (transmitting URLLC services), then this terminal device considers that there is no data sent to it on the preempted resource, that is, this terminal device will ignore the data received on the preempted resource.

[0120] Furthermore, the position of the DL PI field corresponding to the activated BWP in the first information can be indicated by the network to the terminal device. For example, a communication method provided in this embodiment further includes the network device sending second information, and correspondingly, the terminal device receiving the second information. Alternatively, the position of the DL PI field corresponding to the activated BWP in the first information can be determined according to predefined rules. For example, the position of the DL PI field corresponding to the activated BWP in the first information can be arranged sequentially in ascending order of BWP ID.

[0121] The second information includes multiple first identification information and multiple first location information; each first identification information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell, and each first location information indicates the position of the DL PI field corresponding to the active BWP that has experienced time-frequency resource preemption in the first information.

[0122] In the embodiments of this application, the second information may be carried in RRC signaling or in other signaling, and there is no limitation on this.

[0123] It can be understood that the first identification information is such as bwpId (BWP identifier). For example, the second information includes three first identification information, namely bwp1, bwp2, and bwp3, where bwp1 represents... Figure 4 BWP1 is activated during time-frequency resource preemption, and bwp2 indicates... Figure 4 BWP2 is activated during time-frequency resource preemption, and bwp3 indicates... Figure 4 BWP3 is activated during time-frequency resource preemption.

[0124] The first position information is such as positionInDCI (position in DCI). For example, the second information includes three first position information, one of which indicates the position of the DL PI field corresponding to bwp1 in the first information, one of which indicates the position of the DL PI field corresponding to bwp2 in the first information, and one of which indicates the position of the DL PI field corresponding to bwp3 in the first information.

[0125] The received second information enables the terminal device to quickly locate the position of the DL PI field corresponding to each activated BWP in the first information, so that the terminal device can accurately identify the DL PI field corresponding to each activated BWP when the first information includes multiple DL PI fields.

[0126] In one embodiment, the first information includes multiple first sub-information, each first sub-information containing a first field and a second field, wherein a first field is used to indicate the identification information of the corresponding active BWP, and a second field is used to indicate the time-frequency resources preempted on the corresponding active BWP; the multiple second fields included in the first information are all DLPI fields.

[0127] For example, the structure of DCI is BWPindex + DL PI + ... + BWPindex + DL PI. The first sub-information is BWPindex + DL PI, where the first field is the BWPindex field and the second field is the DL PI field. It can be understood that a BWP index field is added before each DLPI field. This newly added BWP index field indicates an active BWP, and a BWPindex + DL PI indicates the preempted time-frequency resources on the corresponding BWP.

[0128] For example, if there are 4 active BWPs in the target cell, then the BWPindex field in the first sub-information is 2 bits. A BWPindex field of 00 indicates that active BWP 1 has been preempted, a BWPindex field of 01 indicates that active BWP 2 has been preempted, a BWPindex field of 10 indicates that active BWP 3 has been preempted, and a BWPindex field of 11 indicates that active BWP 4 has been preempted.

[0129] In the case where each DL PI field corresponds to an active BWP, each DL PI field has a corresponding reference downlink area. That is, the resource preemption of each active BWP in a cell corresponds to a reference downlink area. The time domain resources and frequency domain resources of the reference downlink area are the same as those of the existing protocol. That is, the frequency domain resources of a reference downlink area include the corresponding active BWP, and the time domain resources consist of downlink symbols between two DCI listening times. When there are uplink symbols between two listening times, these symbols need to be removed.

[0130] In the embodiments of this application, a normal cell refers to a cell corresponding to one carrier, and a cell has only one active BWP.

[0131] In one embodiment, in a scenario of multi-target cell aggregation, or in a scenario of aggregation of ordinary cells and target cells, each DL PI is used to indicate the time-frequency resources preempted on an active BWP of a cell, where the target cell can be understood as a multi-carrier cell. The indication scheme for resource preemption of a target cell can be applied to a scenario of multi-target cell aggregation, and will not be elaborated further.

[0132] In one embodiment, the first information includes five DL PI fields, and the structure of the first information is DL PI+DL PI+DL PI+DL PI+DL PI. The active BWPs that are preempted in target cell 1 are BWP1, BWP2, and BWP3, and the active BWPs that are preempted in target cell 2 are BWP1 and BWP2. The first three DL PI fields indicate the locations of the preempted time-frequency resources on BWP1, BWP2, and BWP3 of target cell 1, respectively, while the last two DL PI fields indicate the locations of the preempted time-frequency resources on BWP1 and BWP2 of target cell 2.

[0133] In one embodiment, the first information includes multiple BWP identifier fields and multiple DL PI fields. The structure of the DCI is BWP index+DL PI+BWP index+DL PI+BWP index+DL PI+BWP index+DL PI+BWP index+DL PI, wherein the first three BWP index+DL PI indicate the location of the preempted time-frequency resources on the active BWP1, BWP2, and BWP3 of target cell 1, and the last two BWP index+DL PI indicate the location of the preempted time-frequency resources on the active BWP1 and BWP2 of target cell 2.

[0134] In one embodiment, in the aggregation between target cells, or in the aggregation scenario between ordinary cells and target cells, each DL PI is used to indicate the preempted time-frequency resources on at least one active BWP of a cell.

[0135] In one embodiment, the structure of the first information is DL PI+...+DL PI, where each DL PI indicates the resource preemption status of at least one active BWP in a cell.

[0136] For example, in the scenario of aggregation between target cells, refer to Figure 5 The target cells include target cell x1 and target cell x2. In target cell x1, activated BWP11, activated BWP12, and activated BWP13 are preempted, and in target cell x2, activated BWP21, activated BWP22, and activated BWP23 are preempted. The first information includes DL PI + DL PI. The first DL PI field in the first information indicates the resource preemption status of activated BWP11, activated BWP12, and activated BWP13 in target cell x1, and the second DL PI field in the first information indicates the resource preemption status of activated BWP21, activated BWP22, and activated BWP23 in target cell x2. The location information of the preempted BWP identifiers and the DL PI fields is indicated by the second information, similar to the resource preemption scheme in a single target cell scenario, and will not be elaborated further.

[0137] For example, in the case of aggregation of ordinary cells and target cells, refer to Figure 6 In ordinary cell x3, one activated BWP31 is preempted, and in target cell x4, activated BWP41, activated BWP42, and activated BWP43 are preempted. If the first information includes: DL PI + DL PI, where the first DL PI field corresponds to activated BWP31 in ordinary cell x3, and the second DL PI field corresponds to activated BWP41, activated BWP42, and activated BWP43 in target cell x4.

[0138] In one embodiment, the structure of the first information is: BWP index + DL PI + ... + BWP index + DL PI, where each BWP index in the first information corresponds to at least one active BWP in a cell, and each DLPI field in the first information corresponds to at least one active BWP in a cell.

[0139] For example, in the scenario of aggregation between target cells, refer to Figure 5 The first information includes: BWP index + DLPI + BWP index + DLPI. The first BWP index can be used to indicate that active BWP11, active BWP12, and active BWP13 in target cell x1 are preempted. The first DLPI field corresponds to the location of the preempted time-frequency resources in active BWP11, active BWP12, and active BWP13 in target cell x1. The second BWP index can be used to indicate that active BWP21, active BWP22, and active BWP23 in target cell x2 are preempted. The second DLPI field corresponds to the location of the preempted time-frequency resources in active BWP21, active BWP22, and active BWP23 in target cell x2. It can be understood that this first information indicates the preempted time-frequency resources in target cell x1 and target cell x2.

[0140] For example, in the case of aggregation of ordinary and target communities, refer to Figure 6Ordinary cell x3 includes an active BWP31, and target cell x4 includes active BWP41, active BWP42, and active BWP43. If the first information includes: BWPindex+DLPI+BWPindex+DLPI, where the first BWP index can be used to indicate that active BWP31 in ordinary cell x3 has been preempted, the first DLPI field indicates the location of the time-frequency resources preempted by active BWP31 in ordinary cell x3, the second BWPindex can be used to indicate that active BWP41, active BWP42, and active BWP43 in target cell x4 have been preempted, and the second DLPI field indicates the location of the time-frequency resources preempted by active BWP41, active BWP42, and active BWP43 in target cell x4, then this first information indicates the preempted time-frequency resources of BWPs in ordinary cell x3 and target cell x4.

[0141] It is understandable that when the DL PI field indicates the resource preemption status of at least one active BWP in a cell, each DL PI field in the first information corresponds to at least one cell, indicating at least one preempted active BWP in a cell in the form of a bitmap or a predefined table.

[0142] In one embodiment, four active BWPs are configured in cell 1. A bitmap of length 4 indicates which BWPs in cell 1 have been preempted. A bit value of 1 indicates that the corresponding BWP has been preempted, and a bit value of 0 indicates that the corresponding BWP has not been preempted. For example, a bitmap of 0110 indicates that active BWP 2 and active BWP 3 in cell 1 have been preempted. In other words, the BWPindex in the first information is a bitmap.

[0143] In another embodiment, the preempted BWP is indicated by a predefined table plus DCI indicators. For example, a 16-row BWP preemption indicator table is defined, where each row represents a preemption situation. For example, each row of the table can correspond to BWP 1, BWP2, BWP 3, BWP 4, (BWP1, BWP2), (BWP1, BWP3), (BWP1, BWP4), (BWP2, BWP3), (BWP2, BWP4), (BWP3, BWP4), (BWP1, BWP2, BWP3), (BWP2, BWP3, BWP4), (BWP1, BWP2, BWP3, BWP4), with the remaining rows reserved. In this embodiment, the BWP index field in DCI is 4 bits. A bit value of 0 indicates that BWP1 is preempted, a bit value of 1 indicates that BWP2 is preempted, a bit value of 2 indicates that BWP3 is preempted, a bit value of 3 indicates that BWP4 is preempted, a bit value of 3 indicates that BWP1 and BWP2 are preempted, and so on. This will not be elaborated further.

[0144] In scenarios where each DL PI field corresponds to a cell, the length of the DL PI field for each cell can be configured via RRC. Alternatively, the length of the DL PI field can depend on the number of preempted active BWPs in the corresponding cell. For example, if two active BWPs are preempted in a cell, the length of the DL PI field is 28.

[0145] In this embodiment, when one DL PI field corresponds to multiple active BWPs, and the frequency domain range of one reference downlink region corresponds to multiple active BWPs of a cell, then the DL PI corresponding to one reference downlink region is an n×14 bit map. The reference downlink region can be divided into n×14 resource blocks, where n is the number of active BWPs corresponding to one DL PI field. Each bit in one DL PI field is used to indicate whether the corresponding resource block has been preempted. If the bit is 1, it indicates that the corresponding resource block has been preempted; if the bit is 0, it indicates that the corresponding resource block has not been preempted.

[0146] For example, if two active BWPs in the target cell have their time-frequency resources preempted, the reference downlink area is divided into 28 resource blocks, with the two active BWPs being BWP1 and BWP2. The division of the 28 resource blocks within a reference downlink area includes two patterns: the time domain range is divided into M parts, and the frequency domain range is divided into N parts. Figure 7 Pattern (a) is {M, N} = {14, 2}, and pattern (b) is {M, N} = {7, 4}. Among them, in Figure 7Resource blocks 0 to 13 correspond to BWP1, and resource blocks 14 to 27 correspond to BWP2. Figure 7 Blocks 0 to 27 are resource block identifiers, referring to the time domain resources occupied by the downlink area, such as... Figure 7 The time domain range shown refers to the frequency domain resources occupied by the downlink region as follows: Figure 7 The diagrams shown are BWP1 and BWP2. The specific pattern used in the reference downlink region is configured by higher-layer parameters, which can be time-frequency settings (timeFrequencySet). The DL PI length can be implicitly obtained through the configuration of timeFrequencySet. For example, a timeFrequencySet configured as (14, 1) or (7, 2) corresponds to a DL PI length of 14. A timeFrequencySet configured as (14, 2) or (7, 4) corresponds to a DL PI length of 28.

[0147] In summary, in the embodiments of this application, the first information can have various structures to indicate the time-frequency resources that are preempted on each active BWP.

[0148] S302, the terminal device cancels downlink reception on the preempted time and frequency resources based on the first information.

[0149] In this embodiment of the application, the time-frequency resources used for downlink reception overlap with the preempted time-frequency resources.

[0150] Canceling downlink reception on preempted time-frequency resources means that the terminal device will ignore the data received on the preempted time-frequency resources if it assumes that there is no data transmission on the preempted time-frequency resources or that no data has been sent to it on the preempted time-frequency resources.

[0151] In this embodiment of the application, if the terminal device cancels downlink reception on the preempted time-frequency resource, other terminal devices can perform downlink reception on the preempted time-frequency resource, thereby avoiding interference between data transmissions of multiple terminal devices.

[0152] Reference Figure 4 BWP1, BWP2, and BWP3 are active BWPs. The preempted time-frequency resources are the time-domain resources on BWP1, BWP2, and BWP3. The downlink reception time-frequency resources of the terminal device are the time-frequency resources occupied by the eMBB service in BWP1, BWP2, and BWP3. The downlink reception time-frequency resources overlap with the preempted time-domain resources in the black area. Furthermore, after receiving the first information, the terminal device cancels downlink reception within the preempted time-frequency resources of BWP1, BWP2, and BWP3.

[0153] In summary, this application includes multiple active BWPs in the target cell, and the terminal device receives downlink data on these active BWPs. When another terminal device wants to receive downlink data on the resources of this terminal device, this terminal device cancels the downlink reception on the time-frequency resource indicated by the received first information, allowing the other terminal device to receive downlink data on that time-frequency resource. This avoids interference between the data transmissions of multiple terminal devices and thus improves communication reliability.

[0154] Reference Figure 8 , Figure 8 This is a flowchart illustrating the steps of another communication method provided in the embodiments of this application. Figure 1 The communication method includes the following steps:

[0155] S801: The network device sends the first information, and the corresponding terminal device receives the first information.

[0156] In one embodiment, the target cell is a cell containing multiple frequency domain resources, each of which may have an active BWP, i.e., the target cell is characterized by containing multiple active BWPs.

[0157] In one embodiment, the target cell is a cell containing multiple carriers, each carrier containing an active BWP.

[0158] In one embodiment, the target cell is a cell containing a discontinuous carrier, where a discontinuous carrier is a carrier composed of discontinuous frequency domain resources, and the target cell contains multiple active BWPs.

[0159] In this embodiment of the application, the first information is used to indicate the time-frequency resources that have been preempted on multiple active BWPs in the target cell.

[0160] In this embodiment, the first information is carried in the DCI. When the first information includes multiple UL CI fields, the format of the DCI can be DCI 2_4, or a new DCI format can be introduced to indicate uplink preemption resources in a target cell that contains multiple carriers.

[0161] In one embodiment, the first information includes multiple UL CI fields, wherein one UL CI field corresponds to one active BWP, and each of the multiple UL CI fields is used to indicate the time-frequency resources that have been preempted on the corresponding active BWP.

[0162] For example, refer to Figure 9The target cell includes three active BWPs: BWP1, BWP2, and BWP3. Uplink transmission is performed on BWP1 and BWP2. The first information includes two UL CI fields, so the structure of the first information is UL CI + UL CI. The first UL CI field indicates the preempted time-frequency resources on BWP1. Figure 9 The first UL CI field indicates that the time-frequency resources preempted on BWP1 are those occupied by the black area. The second UL CI field is used to indicate the time-frequency resources preempted on BWP2. Figure 9 The second UL CI field indicates that the time and frequency resources preempted by BWP2 are those occupied by the black area.

[0163] Furthermore, Figure 9 If terminal device a1 is currently transmitting PUSCH on active BWP1 and active BWP2, the service transmitted by terminal device a1 is eMBB service. If another terminal device a2 needs to transmit a higher priority service, such as URLLC, this service needs to preempt the time-frequency resources of active BWP1 and active BWP2 on terminal device a1. It needs to indicate through the first information that the time-frequency resources preempted on active BWP1 and active BWP2 are the time-frequency resources occupied by the black areas in active BWP1 and active BWP2. Terminal device a1 can cancel the PUSCH transmission.

[0164] This application, by receiving multiple UL CI fields, can instruct a first terminal device to cancel PUSCH transmission, thereby avoiding communication interference to another terminal device's uplink transmission on multiple active BWPs.

[0165] Furthermore, the position of the UL CI field corresponding to the activated BWP in the first information can be determined according to predefined rules. For example, the position of the UL CI field corresponding to the activated BWP in the first information can be arranged in ascending order of BWP ID. Alternatively, the position of the UL CI field corresponding to the activated BWP in the first information can be indicated by the network to the terminal device. For example, the network device sends third information, and the corresponding terminal device receives the third information.

[0166] The third information includes at least one of multiple second identification information, multiple second location information, multiple first field length information, and / or multiple reference uplink area indication information; wherein each second identification information indicates the identifier of an active BWP in the target cell that has experienced time-frequency resource preemption, each second location information indicates the position of the UL CI field corresponding to the active BWP that has experienced time-frequency resource preemption in the first information, each first field length information indicates the field length of the UL CI field corresponding to the active BWP that has experienced time-frequency resource preemption, and each reference uplink area indication information is used to indicate the time domain range and frequency domain range of the reference uplink area corresponding to an active BWP, and the preempted time-frequency resources are located within the reference uplink area.

[0167] For example, third information can be carried in RRC signaling, and third information can also be carried in other signaling without limitation.

[0168] It is understandable that the second identification information is such as bwpid. For example, the third information includes two first identification information, namely bwp1 and bwp2, where bwp1 represents... Figure 9 BWP1 is activated during time-frequency resource preemption, and bwp2 indicates... Figure 9 BWP2 is activated during time-frequency resource preemption.

[0169] The second position information is such as positionInDCI (position in DCI). For example, the third information includes two first position information, one of which indicates the position of the UL CI field corresponding to the activated BWP1 in the first information, and the other of which indicates the position of the UL CI field corresponding to the activated BWP2 in the first information.

[0170] The first field length information includes ci-PayloadSize (CI field payload length). For example, the third information includes two first field length information, one of which indicates the length of the UL CI field corresponding to the activation of BWP1, and the other of which indicates the length of the UL CI field corresponding to the activation of BWP2.

[0171] For example, the third information includes two reference uplink region indication messages. One reference uplink region indication message indicates the time and frequency domain ranges of the reference uplink region corresponding to the activated BWP1, and the other reference uplink region indication message indicates the time and frequency domain ranges of the reference uplink region corresponding to the activated BWP2. The frequency domain range can be indicated using a RIV (Resource Indicator Value), indicating the start position and length of the frequency domain range.

[0172] In summary, this application can determine the identifier of the active BWP that has preempted uplink time and frequency resources by receiving the third information, as well as the position of the UL CI field in the first information, the length of the UL CI field, and the time and frequency domain range of the reference uplink area corresponding to each active BWP.

[0173] In one embodiment, the first information includes multiple first sub-information, each first sub-information containing a first field and a second field, wherein the first field is used to indicate the identification information of the corresponding active BWP, and the second field is used to indicate the time-frequency resources that have been preempted on the corresponding active BWP; the multiple second fields included in the first information are all ULCI fields.

[0174] For example, the structure of DCI is BWPindex + UL CI + ... + BWPindex + UL CI. The first sub-information is BWPindex + UL CI, the first field is BWPindex, and the second field is UL CI. Furthermore, it can be understood that a BWP index is added before each ULCI field. This added BWP index indicates an active BWP, and the UL CI field indicates the preempted time-frequency resources on an active BWP.

[0175] In the case where each UL CI field corresponds to an active BWP, each UL CI field has a corresponding reference uplink area. That is, the resource preemption of each active BWP in a cell corresponds to a reference uplink area. The time domain resources and frequency domain resources of the reference uplink area are the same as those of the existing protocol. In other words, the frequency domain resources of a reference uplink area include the corresponding active BWP.

[0176] Furthermore, in scenarios involving aggregation among multiple target cells, or aggregation of ordinary cells and target cells, each UL CI field is used to indicate the preempted time-frequency resources on at least one active BWP of a cell. The aggregation among multiple target cells and the case where each UL CI field indicates the preempted time-frequency resources on one active BWP of a cell can be analogous to the DL PI field scheme, and will not be elaborated further.

[0177] In one embodiment, the structure of the first information is: UL CI+...+UL CI, where each UL CI field indicates the resource preemption status of at least one active BWP in a cell.

[0178] For example, in the scenario of aggregation between target cells, refer to Figure 5The target cells include: target cell x1 and target cell x2. In target cell x1, BWP11, BWP12, and BWP13 are preempted, and in target cell x2, BWP21, BWP22, and BWP23 are preempted. The first information includes: UL CI + UL CI. The first UL CI field in the first information indicates the resource preemption status of BWP11, BWP12, and BWP13 in target cell x1, and the second UL CI field in the first information indicates the resource preemption status of BWP21, BWP22, and BWP23 in target cell x2.

[0179] For example, in the case of aggregation of ordinary cells and target cells, refer to Figure 6 In ordinary cell x3, an active BWP31 is preempted; in target cell x4, active BWP41, active BWP42, and active BWP43 are preempted. If the first information includes: UL CI + UL CI, where the first UL CI field indicates the location of the preempted time-frequency resources on active BWP31 in ordinary cell x3, and the second UL CI field indicates the location of the preempted time-frequency resources on active BWP41, active BWP42, and active BWP43 in target cell x4.

[0180] In one embodiment, the structure of the first information is: BWP index + UL CI + ... + BWP index + UL CI. Here, the BWP index in the first information indicates at least one active BWP in a cell, and each ULCI field in the first information corresponds to at least one active BWP in a cell.

[0181] For example, in the scenario of aggregation between target cells, refer to Figure 5The target cells include target cell x1 and target cell x2. In target cell x1, activated BWP11, activated BWP12, and activated BWP13 are preempted, and in target cell x2, activated BWP21, activated BWP22, and activated BWP23 are preempted. The first information is BWP index + UL CI + BWP index + UL CI. The first BWP index can be used to indicate that the preempted BWPs in target cell x1 are activated BWP11, activated BWP12, and activated BWP13, and the first UL CI field corresponds to activated BWP11, activated BWP12, and activated BWP13 in target cell x1. The second BWP index can be used to indicate that the preempted BWPs in target cell x2 are activated BWP21, activated BWP22, and activated BWP23, and the second UL CI field corresponds to activated BWP21, activated BWP22, and activated BWP23 in target cell x2. It can be understood that this first information indicates the time-frequency resources preempted in target cells x1 and target cells x2.

[0182] For example, in the case of aggregation of ordinary cells and target cells, refer to Figure 6 In ordinary cell x3, an active BWP31 is preempted, and in target cell x4, active BWP41, active BWP42, and active BWP43 are preempted. If the first information includes: BWPindex + UL CI + BWPindex + UL CI, where the first BWP index can be used to indicate that the preempted BWP in ordinary cell x3 is active BWP31, and the first UL CI field corresponds to active BWP31 in ordinary cell x3; the second BWPindex can be used to indicate that the preempted BWPs in target cell x4 are active BWP41, active BWP42, and active BWP43, and the second UL CI field corresponds to active BWP41, active BWP42, and active BWP43 in target cell x4, then this first information indicates the time-frequency resources of the preempted BWPs in ordinary cell x3 and target cell x4.

[0183] Furthermore, when the second field is a UL CI field, the length of the second field and the time and frequency domain ranges of the reference uplink area can be indicated by the network to the terminal device. For example, the network device sends the fourth information, and correspondingly, the terminal device receives the fourth information.

[0184] The fourth information includes multiple second field length information and multiple reference uplink reference area information. Each second field length information indicates the field length of a second field, and each reference uplink reference area information indicates the time domain range and frequency domain range of the reference uplink area corresponding to one of the second fields. The preempted time and frequency resources indicated by the second field are located within the reference uplink area.

[0185] The fourth piece of information can be carried in RRC signaling or in other signaling, without limitation.

[0186] In summary, this application uses the received fourth information to determine the length information of each second field and the time domain range and frequency domain range of the reference uplink region corresponding to multiple second fields.

[0187] S802, based on the first information, cancel the uplink transmission.

[0188] In this embodiment of the application, the time-frequency resources used for uplink transmission overlap with the time-frequency resources that have been preempted.

[0189] In this case, canceling uplink transmission by the current terminal device allows other terminal devices to transmit uplink data, thus avoiding interference between uplink data transmissions.

[0190] Reference Figure 9 In the case of a single target cell, the preempted time-frequency resources are those in active BWP1 and active BWP2. The time-frequency resources occupied by PUSCH overlap with the preempted time-domain resources, such as... Figure 9 The black area in the middle. Furthermore, after receiving the first message, the terminal device cancels the uplink transmission.

[0191] Reference Figure 10 In the case of aggregation between ordinary cells and target cells, if terminal device a1 is currently transmitting uplink PUSCH on activated BWP31, activated BWP41, and activated BWP42, and another terminal device a2 needs to transmit a higher-priority service, this higher-priority service needs to preempt the time-frequency resources of terminal device a1 on activated BWP31, activated BWP41, and activated BWP42. The first information needs to indicate the time-frequency resources preempted on activated BWP31, activated BWP41, and activated BWP42. Figure 10 The black area indicates that the time-frequency resources that have been preempted are those time-frequency resources, and terminal device a1 cancels uplink transmission. Terminal device a2 can then perform uplink transmission.

[0192] In summary, this application includes multiple active BWPs in the target cell, and the data transmission of this terminal device is carried on multiple active BWPs. When another terminal device wants to transmit on the resources of this terminal device, this terminal device cancels the uplink transmission by using the preempted time-frequency resources indicated by the received first information. This avoids interference between the data transmissions of the terminal devices caused by multiple terminal devices transmitting uplink on the same time-frequency resources, thus improving communication reliability.

[0193] This application includes multiple active BWPs in the target cell, and the data transmission of this terminal device is carried on multiple active BWPs. When another terminal device wants to perform uplink transmission on the resources of this terminal device, this terminal device cancels the uplink transmission by using the preempted time-frequency resources indicated by the received first information. This avoids interference between the data transmissions of the terminal devices caused by multiple terminal devices performing uplink transmission on the same time-frequency resources, thereby improving communication reliability.

[0194] This application also includes a method for a terminal device to determine the actual transmit power of multiple uplink channels based on the transmit power of multiple uplink channels on multiple active BWPs and the device's maximum transmit power.

[0195] The maximum transmit power of the device refers to the maximum transmit power of the terminal device. The terminal device determines the actual transmit power of multiple uplink channels based on the transmit power of multiple uplink channels on multiple active BWPs and the maximum transmit power of the device.

[0196] Furthermore, the maximum transmission power of the device can be calculated using a formula. Specifically, the formula is as follows:

[0197] P CMAX_L,f,c ≤P CMAX,f,c ≤P CMAX_H,f,c ;

[0198] Among them, P EMAX,c The value is in P CMAX_L,f,c and P CMAX_H,f,c between.

[0199] Furthermore, P CMAX_L,f,c =MIN{P EMAX,c –ΔT C,c ,(P PowerClass –ΔP PowerClass )–MAX(MAX(MPR c +ΔMPR c A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS P-MPR c )};

[0200] P CMAX_H,f,c =MIN{P EMAX,c ,P PowerClass –ΔP PowerClass}

[0201] In the above formula, P EMAX,c Indicates the maximum allowable output power of the network; ΔT C,c The power value is related to the serving cell and is a preset power value; P PowerClassThis represents the maximum output power corresponding to the power level of the terminal device, without considering output power tolerance. ΔP PowerClass This refers to the power level reduction of terminal equipment after considering the specific absorption ratio (SAR) requirements for electromagnetic radiation protection of the human body. MPR c ΔMPR is the maximum power back-off value allowed for the terminal due to higher-order modulation, different transmit PRB locations, and transmission bandwidth configurations. c ΔT represents the change in MPR (Maximum Power Reduction) at a specific frequency band to meet additional spectral radiation requirements; A-MPRc represents the additional maximum power back-off value, allowing the maximum output power of the terminal device to be further backed down by an A-MPR value (dB) from the MPR to meet more stringent spectral radiation requirements defined for different frequency bands in different regions; IB,c The loss introduced by frequency band combination is a parameter related to CA / DC (Dual-connectivity). P-MPR c This represents the power backoff value introduced due to power management. ΔT RxSRS It is a power value related to the frequency band.

[0202] Each of the multiple uplink channels has a corresponding transmit power, which is calculated using the power control formula in related technologies and is not limited here.

[0203] Among them, the maximum output power reduction (MPR) corresponding to the maximum transmit power of the device is the maximum value of the MPR corresponding to all uplink channels in the target cell.

[0204] For example, among multiple PUSCHs scheduled within the target cell, the PUSCHs at the cell bandwidth edge have a larger MPR, while the PUSCHs scheduled at the cell bandwidth center have a smaller MPR. It is understandable that if the MCS of different PUSCHs are different, the MPR can also be different. Therefore, for multiple PUSCHs scheduled within the target cell, it is necessary to determine the maximum value of the MPR corresponding to each PUSCH.

[0205] It is understood that in one embodiment, the maximum MPR corresponding to all uplink channels in the target cell is determined to be the maximum back-off power. In another embodiment, the maximum MPR corresponding to a subset of uplink channels in the target cell is determined to be the maximum back-off power, wherein the subset of uplink channels is not limited.

[0206] Furthermore, different uplink channels have corresponding MPRs, and the largest MPR among these multiple MPRs is selected to determine the maximum transmit power of the device. The determination of the maximum transmit power based on the largest MPR can be referenced from relevant technologies and is not limited here.

[0207] The actual transmit power of multiple uplink channels is determined based on the transmit power of multiple uplink channels on multiple active BWPs and the maximum transmit power of the device, including: when the sum of the transmit power of multiple uplink channels is less than or equal to the maximum transmit power of the device, determining the actual transmit power of each uplink channel based on the transmit power of the uplink channels transmitted on the multiple active BWPs; and / or when the sum of the transmit power of multiple uplink channels is greater than the maximum transmit power of the device, reducing the transmit power of a target uplink channel, where the target uplink channel is one or more of the multiple uplink channels.

[0208] For example: refer to Figure 11 Multiple uplink channels include: PUSCH_1 transmitted during active BWP2 and PUSCH_2 transmitted during active BWP3. PUSCH_1 represents the first PUSCH, PUSCH_2 represents the second PUSCH, and if P... (PUSCH_1) +P (PUSCH_2) ≤Pcmax, the actual transmit power of multiple uplink channels can be determined based on the transmit power of the uplink channels transmitted on different active BWPs, where P (PUSCH_1) P represents the transmit power of PUSCH_1. (PUSCH_2) Pcmax represents the transmit power of PUSCH_2, and Pcmax represents the maximum transmit power of the device. The specific implementation method for determining the actual transmit power of multiple uplink channels based on the transmit power of the uplink channels transmitted on different active BWPs can be found in relevant technologies and will not be limited here.

[0209] Furthermore, if P (PUSCH_1) +P (PUSCH_2) >Pcmax can reduce the transmit power of one of the uplink channels (the target uplink channel) so that the sum of the actual transmit powers of all the multiple uplink channels is less than Pcmax.

[0210] It is understandable that after determining the actual transmit power of multiple uplink channels, the terminal device can perform uplink transmission based on the actual transmit power.

[0211] If PUCCH (Physical Uplink Control Channel) and PUSCH are transmitted simultaneously in different active BWPs, priority can be given to ensuring the transmission power of PUCCH or PUSCH. (Refer to...) Figure 12The target cells include: activated BWP1, activated BWP2, and activated BWP3. If PUCCH is transmitted in activated BWP1 and PUSCH is transmitted in activated BWP2, and PUCCH and PUSCH are transmitted simultaneously, relevant technologies can be used to indicate the priority of PUCCH and PUSCH to ensure the transmission of the uplink channel with higher priority. If the priorities of PUCCH and PUSCH are the same, the power of PUCCH and PUSCH will be reduced uniformly.

[0212] For example, a PUCCH carrying HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledge) has a higher priority than a PUSCH. If a PUCCH carrying HARQ-ACK information is used in BWP1, the transmission power of the PUCCH is guaranteed first. A PUCCH carrying SR / CSI report has a lower priority than a PUSCH. If a PUCCH carrying an SR / CSI report (Signal-to-Response / Channel State Information report) is used in BWP1, the transmission power of the PUSCH is guaranteed first. For another example, if BWP1 is used to transmit PUSCH_eMBB service and BWP2 is used to transmit PUSCH_URLLC, where PUSCH_URLLC has a higher priority than PUSCH_eMBB, the transmission power of PUSCH_URLLC is guaranteed first.

[0213] For example, if PUCCH and PUSCH have the same priority, then power reduction can be applied to both PUCCH and PUSCH in a unified manner.

[0214] In the embodiments of this application, the target uplink channel is determined based on the priority information and / or transmission parameters corresponding to the multiple uplink channels respectively.

[0215] In one embodiment, at least one uplink channel with a lower priority is determined as the target uplink channel. If two uplink channels exist, the target uplink channel is one of them, i.e., the transmit power of the lower-priority target uplink channel is reduced. If there are at least three uplink channels, there are multiple target uplink channels, and the transmit power of multiple target uplink channels needs to be reduced. After reducing the transmit power of multiple target uplink channels, the sum of the transmit power of the multiple target uplink channels is less than Pcmax. For example, if there are PUSCH_1, PUSCH_2, and PUSCH_3, after reducing the transmit power of PUSCH_1 and PUSCH_2, the sum of the transmit power of PUSCH_1, PUSCH_2, and PUSCH_3 is less than Pcmax.

[0216] The priority information includes at least one of the following: the service priority of the uplink channel, the priority of the content carried by the uplink channel, the priority of the frequency domain resources where the uplink channel is located, or the priority of the active BWP where the uplink channel is located. The transmission parameters include at least one of the following: modulation and coding scheme (MCS), bandwidth, and transport block (TB) size.

[0217] For example, service priorities include the priority of URLLC services and the priority of eMBB services. For instance, if the priority of URLLC services is higher than the priority of eMBB services, then... (PUSCH_eMBB )=Pcmax-P (PUSCH_URLLC) Where PUSCH_eMBB is the uplink data channel for transmitting eMBB services, PUSCH_URLLC is the uplink data channel for transmitting URLLC services, and P' (PUSCH_eMBB) To understand the actual transmit power of the uplink channel for eMBB services, P' can be considered as... (PUSCH_eMBB) It is for P (PUSCH_eMBB) P obtained after power reduction (PUSCH_eMBB) The transmit power for the uplink channel used to transmit eMBB services. P (PUSCH_URLLC) To determine the transmit power of the uplink channel for URLLC services, a power threshold can also be set for PUSCH_eMBB. (PUSCH_eMBB When the power value is less than the threshold, the terminal device cancels the transmission of PUSCH_eMBB.

[0218] In addition, the services transmitted on the uplink channel can also be mMTC (massive Machine Type of Communication) services, HRLLC (Hyper Reliable Low Latency Communication) services, or sensing services, without any limitation here.

[0219] The priority of the uplink channel is determined based on the priority of the content carried by the uplink channel.

[0220] For example, the transmission power of the uplink channel with higher priority is guaranteed. For instance, if the content transmitted by PUSCH_1 (such as data) has a higher priority than the content transmitted by PUSCH_2 (such as CSI reports), then the priority of PUSCH_1 is determined to be higher than that of PUSCH_2.

[0221] In addition, the priority of the uplink channel can be determined based on the priority of the carrier in which the uplink channel is located. If the carrier in which the uplink channel is located has a higher priority, the uplink channel also has a higher priority.

[0222] In this embodiment, the priority of the uplink channel can also be determined based on the priority of the active BWP where the uplink channel is located. Where the active BWP where the uplink channel is located has a higher priority, the uplink channel also has a higher priority. For example, if PUSCH_1 is located in active BWP1 and PUSCH_2 is located in active BWP2, and the priority of active BWP2 is higher than the priority of active BWP1, then the priority of PUSCH_2 is higher than the priority of PUSCH_1.

[0223] In one embodiment, reducing the transmit power of a target uplink channel includes: reducing the transmit power of multiple uplink channels according to a power reduction factor. This application further includes: receiving fifth information, the fifth information indicating the power reduction factor.

[0224] In this context, it can be understood that multiple uplink channels can be identified as target uplink channels. The network device configures at least one power reduction factor for the terminal device. The terminal device determines one of the at least one power reduction factors to reduce the transmit power of multiple uplink channels to obtain the actual transmit power of each uplink channel. The determined power reduction factor must ensure that the power of multiple uplink channels is less than the maximum transmit power of the terminal device.

[0225] In another embodiment, reducing the transmit power of the target uplink channel includes: reducing the transmit power of the active BWP where the target uplink channel is located.

[0226] It is understandable that the terminal device selects one or more uplink channels as the target uplink channel, and the terminal device autonomously reduces the transmit power of the active BWP where the target uplink channel is located.

[0227] In this embodiment, reducing the transmit power of multiple uplink channels can prevent the total transmit power of multiple uplink channels from exceeding the maximum transmit power of the device, thereby reducing the power consumption of the terminal device and meeting the electromagnetic radiation requirements.

[0228] In this embodiment of the application, the method further includes: determining a power margin based on the transmit power of multiple uplink channels on multiple active BWPs and the maximum transmit power of the device; and sending a sixth message, the sixth message including the power margin.

[0229] The multiple uplink channels include multiple PUSCHs. Based on the transmit power of the multiple uplink channels on multiple active BWPs and the maximum transmit power of the device, the power margin is determined, including: summing the transmit power of multiple PUSCHs to obtain a first power sum; and determining the power margin as the difference between the maximum transmit power of the device and the first power sum.

[0230] In scenarios where power margins are jointly reported, PH = Pcmax - P (PUSCH_1) -P (PUSCH_2) PH represents the power margin. For example, if there are m active BWPs, there are corresponding m PUSCHs, namely PUSCH_1, PUSCH_2, ..., PUSCH_m, where m is a positive integer. The i-th active BWP corresponds to PUSCH_i, then PH = Pcmax - P (PUSCH_1) -P (PUSCH_2) -…-P (PUSCH_m) .

[0231] In scenarios where power margin is reported individually, the power margin is reported separately for the frequency domain resources of each active BWP. For example, the target cell includes active BWP1, active BWP2, and active BWP3. Power margin PH1 can be reported for the frequency domain resources of active BWP1, power margin PH2 can be reported for the frequency domain resources of active BWP2, and power margin PH3 can be reported for the frequency domain resources of active BWP3.

[0232] It is understood that multiple uplink channels include PUSCH and PUCCH. For an active BWP in the target cell, the power margin is determined based on the transmit power of multiple uplink channels on multiple active BWPs and the maximum transmit power of the device. This includes: summing the transmit power of multiple PUSCHs and multiple PUCCHs to obtain a second power sum; and determining the power margin as the difference between the maximum transmit power of the device and the second power sum.

[0233] It is understandable that in scenarios where PUSCH and PUCCH are transmitted on different active BWPs, for example, PUSCH is transmitted on active BWP1, PUSCH is transmitted on active BWP2, and PUCCH is transmitted on active BWP3, PH = Pcmax - P (PUSCH) -P (PUCCH) , where P (PUSCH) P represents the total transmit power of the PUSCH corresponding to multiple activated BWPs. (PUCCH) Given the total transmit power of the PUCCH corresponding to multiple activated BWPs, and Pcmax as the maximum transmit power of the device, the power margin is the maximum transmit power of the device minus the sum of the total transmit power of the PUSCH and the total transmit power of the PUCCH.

[0234] Furthermore, if multiple uplink channels only partially overlap in the time domain, the determined actual transmit power can be applied to both the overlapping and non-overlapping parts of the time domain.

[0235] In one embodiment, the actual transmit power is determined according to the time domain overlap, which can be applied to the non-overlapping part of the time domain, that is, the actual transmit power of the same up channel does not jump in different time domain symbols.

[0236] In another embodiment, different time-domain symbols are included on the same channel. Some time-domain symbols are used to transmit resources, while others are not used to transmit resources. This application can allocate more transmit power to the time-domain symbols that transmit resources and introduce terms related to the number of time-domain symbols in the power control formula. For example, the symbol length corresponding to 15kHz SCS (Sub-carrier Spacing) is used as the basic unit.

[0237] The embodiments of this application can determine the power margin, so that the network device can determine the available power margin of the terminal device, which facilitates the network device to adjust the transmission power of the terminal device according to the power margin and reduce the power consumption of the terminal device.

[0238] In summary, in the embodiments of this application, when the target cell contains multiple requests to activate BWP, the actual transmit power of multiple uplink channels can be determined. This actual transmit power enables the terminal device to achieve accurate power control when transmitting on multiple uplink channels, thereby reducing the power consumption of the terminal device.

[0239] Figure 13 This is a schematic diagram of a communication device provided in an embodiment of this application. Please refer to [link / reference]. Figure 13 The communication device 130 may include a memory 1301 and a processor 1302. Exemplarily, the memory 1301 and the processor 1302 are interconnected via an interface 1303.

[0240] The communication interface is used to receive signals from other communication devices and transmit them to the processor, or to send signals from the processor to other communication devices.

[0241] The processor is used to execute programs or instructions to cause the communication device to perform the aforementioned communication method.

[0242] Figure 13 The communication device shown in the embodiments can execute the technical solutions shown in the above method embodiments. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0243] This application provides a chip, which includes at least one processor and an interface circuit. The interface circuit is connected to at least one processor, and the processor implements the above-described communication method by running program instructions.

[0244] This application provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the above-described communication method when executed by a processor.

[0245] This application embodiment may also provide a computer program product, including a computer program that, when executed by a processor, can implement the above-described communication method.

[0246] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0247] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. Multitasking and parallel processing may be advantageous in certain environments. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this application. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0248] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

Claims

1. A communication method, characterized in that, include: Receive first information, the first information being used to indicate the time-frequency resources that have been preempted on multiple active bandwidth portions (BWPs) in a target cell, wherein the target cell is a cell containing multiple frequency domain resources, or the target cell is a cell containing multiple carriers; Based on the first information, downlink reception on the preempted time-frequency resources is cancelled, wherein the time-frequency resources used for downlink reception overlap with the preempted time-frequency resources; or, based on the first information, uplink transmission is cancelled, wherein the time-frequency resources used for uplink transmission overlap with the preempted time-frequency resources.

2. The communication method according to claim 1, characterized in that, The first information is carried in downlink control information (DCI), which includes multiple downlink preemption indication (DLPI) fields. Each DLPI field corresponds to an active BWP, and each DLPI field is used to indicate the time-frequency resources preempted on the corresponding active BWP.

3. The communication method according to claim 2, characterized in that, Also includes: Receive second information, the second information including multiple first identification information and multiple first location information; Each first identification information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell, and each first location information indicates the position of the DL PI field corresponding to the active BWP that has experienced time-frequency resource preemption in the first information.

4. The communication method according to claim 1, characterized in that, The first information is carried in the DCI, which includes multiple uplink cancellation indication UL CI fields. Each UL CI field corresponds to an active BWP, and each of the multiple UL CI fields is used to indicate the preempted time and frequency resources on the corresponding active BWP.

5. The communication method according to claim 4, characterized in that, Also includes: Receive third information, the third information including at least one of multiple second identification information, multiple second location information, multiple first field length information and / or multiple reference uplink area indication information; Each second identification information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell; each second location information indicates the position of the UL CI field corresponding to the active BWP that has experienced time-frequency resource preemption in the first information; each first field length information indicates the field length of the UL CI field corresponding to the active BWP that has experienced time-frequency resource preemption; each reference uplink area indication information is used to indicate the time domain range and frequency domain range of the reference uplink area corresponding to an active BWP; and the preempted time-frequency resource is located within the corresponding reference uplink area.

6. The communication method according to claim 1, characterized in that, The first information is carried in DCI. The first information includes multiple first sub-information. Each first sub-information contains a first field and a second field. The first field is used to indicate the identification information of the corresponding active BWP, and the second field is used to indicate the time-frequency resources that have been preempted on the corresponding active BWP.

7. The communication method according to claim 6, characterized in that, In the case where the second field is a UL CI field, it also includes: Receive fourth information, which includes multiple second field length information and multiple reference uplink reference area information. Each second field length information indicates the field length of a second field, and each reference uplink reference area information indicates the time domain range and frequency domain range of the reference uplink area corresponding to one of the second fields. The preempted time and frequency resources indicated by the second field are located within the corresponding reference uplink area.

8. The communication method according to any one of claims 1 to 7, characterized in that, The communication method further includes: The actual transmit power of the multiple uplink channels is determined based on the transmit power of the multiple uplink channels on the multiple active BWPs and the maximum transmit power of the device.

9. The communication method according to claim 8, characterized in that, The maximum back-off power (MPR) corresponding to the maximum transmit power of the device is the maximum value of the MPR corresponding to all uplink channels in the target cell.

10. The communication method according to claim 8, characterized in that, The step of determining the actual transmit power of the multiple uplink channels based on the transmit power of the multiple uplink channels on the multiple active BWPs and the maximum transmit power of the device includes: If the sum of the transmit powers of the plurality of uplink channels is less than or equal to the maximum transmit power of the device, the actual transmit power of each of the plurality of uplink channels is determined based on the transmit power of the uplink channels transmitted on the plurality of active BWPs; and / or, If the sum of the transmit power of the plurality of uplink channels is greater than the maximum transmit power of the device, the transmit power of the target uplink channel is reduced, wherein the target uplink channel is one or more of the plurality of uplink channels.

11. The communication method according to claim 10, characterized in that, The target uplink channel is determined based on the priority information and / or transmission parameters corresponding to the plurality of uplink channels respectively; The priority information includes at least one of the following: the service priority of the uplink channel, the priority of the content carried by the uplink channel, the priority of the frequency domain resources where the uplink channel is located, or the priority of the active BWP where the uplink channel is located. The transmission parameters include at least one of the following: modulation and coding scheme (MCS), bandwidth, and transport block (TB) size.

12. The communication method according to claim 10, characterized in that, The reduction of the target uplink channel transmit power includes: The transmit power of the plurality of uplink channels is reduced according to the power reduction factor.

13. The communication method according to claim 12, characterized in that, Also includes: Receive fifth information, which is used to indicate the power reduction factor.

14. The communication method according to any one of claims 1 to 7, characterized in that, Also includes: The power margin is determined based on the transmit power of the multiple uplink channels on the multiple active BWPs and the maximum transmit power of the device; Send a sixth message, which includes the power margin.

15. The communication method according to claim 14, characterized in that, The multiple uplink channels include multiple Physical Uplink Shared Channels (PUSCH). Power margin is determined based on the transmit power of the multiple uplink channels on the multiple active BWPs and the device's maximum transmit power, including: The transmit power of the plurality of PUSCHs is summed to obtain the first total power; The power margin is determined to be the difference between the maximum transmit power of the device and the sum of the first power.

16. The communication method according to claim 14, characterized in that, The multiple uplink channels include the PUSCH and the Physical Uplink Control Channel (PUCCH). Determining the power margin based on the transmit power of the multiple uplink channels on the multiple active BWPs and the device's maximum transmit power includes: The transmit power of the plurality of PUSCHs and the transmit power of the plurality of PUCCHs are summed to obtain the second total power; The power margin is determined to be the difference between the maximum transmit power of the device and the sum of the second power.

17. A communication method, characterized in that, include: Send first information, which is used to indicate the preempted time-frequency resources on multiple active bandwidth portions (BWPs) in a target cell, wherein the target cell is a cell containing multiple frequency domain resources, or the target cell is a cell containing multiple carriers.

18. The communication method according to claim 17, characterized in that, The first information is carried in downlink control information (DCI), which includes multiple downlink preemption indication (DLPI) fields. Each DLPI field corresponds to an active BWP, and each DLPI field is used to indicate the time-frequency resources preempted on the corresponding active BWP.

19. The communication method according to claim 18, characterized in that, Also includes: Send a second message, the second message including multiple first identification information and multiple first location information; Each first identification information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell, and each first location information indicates the position of the DL PI field corresponding to the active BWP that has experienced time-frequency resource preemption in the first information.

20. The communication method according to claim 17, characterized in that, The first information is carried in the DCI, which includes multiple uplink cancellation indication UL CI fields. Each UL CI field corresponds to an active BWP, and each of the multiple UL CI fields is used to indicate the preempted time and frequency resources on the corresponding active BWP.

21. The communication method according to claim 20, characterized in that, Also includes: Send third information, the third information including at least one of multiple second identification information, multiple second location information, multiple first field length information and / or multiple reference uplink area indication information; Each second identification information indicates the identifier of an active BWP that has experienced time-frequency resource preemption in the target cell; each second location information indicates the position of the UL CI field corresponding to the active BWP that has experienced time-frequency resource preemption in the first information; each first field length information indicates the field length of the UL CI field corresponding to the active BWP that has experienced time-frequency resource preemption; each reference uplink area indication information is used to indicate the time domain range and frequency domain range of the reference uplink area corresponding to an active BWP; and the preempted time-frequency resource is located within the corresponding reference uplink area.

22. The communication method according to claim 17, characterized in that, The first information is carried in DCI. The first information includes multiple first sub-information. Each first sub-information contains a first field and a second field. The first field is used to indicate the identification information of at least one active BWP, and the second field is used to indicate the time-frequency resources that have been preempted on the corresponding active BWP.

23. The communication method according to claim 22, characterized in that, In the case where the second field is a UL CI field, it also includes: Send a fourth message, which includes multiple second field length messages and multiple reference uplink reference area messages. Each second field length message indicates the length of a second field, and each reference uplink reference area message indicates the time domain range and frequency domain range of the reference uplink area corresponding to one of the second fields. The preempted time and frequency resources indicated by the second field are located within the corresponding reference uplink area.

24. A communication device, characterized in that, include: Includes processor, memory, and communication interface; The memory is used to store programs or instructions; The communication interface is used to receive signals from other communication devices and transmit them to the processor, or to send signals from the processor to other communication devices. The processor is used to execute the program or instructions to enable the communication device to implement the communication method as described in any one of claims 1 to 23.

25. A chip, characterized in that, The chip includes at least one processor and an interface circuit, the interface circuit being connected to the at least one processor, the processor executing program instructions to perform the communication method as described in any one of claims 1 to 23.

26. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the communication method as described in any one of claims 1 to 23.

27. A computer program product, characterized in that, Includes a computer program that, when run, causes a computer to perform the communication method as described in any one of claims 1 to 23.

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