CN111656843B - A data transmission method and device - Google Patents

Abstract

A data transmission method and device are used to solve the problem that the position of the narrowband divided in the existing system bandwidth is fixed, so that the terminal equipment supporting MTC can only transmit data in the narrowband, and the frequency resources used for data transmission are not flexible enough. In this application, the network device sends the first DCI to the terminal device, the first DCI includes a first field and a second field, the first field is used to indicate the first frequency resource, and the second field is used to indicate the second frequency resource and the first field. The offset state between frequency resources, the terminal device receives the first DCI, and determines the second frequency resource according to the first field and the second field included in the first DCI, and the network device sends downlink data to the terminal device on the second frequency resource , the terminal device receives downlink data on the second frequency resource, or the terminal device sends uplink data to the network device on the second frequency resource, and the network device receives the uplink data on the second frequency resource.

Description

A data transmission method and device

technical field

The present application relates to the field of communication technologies, and in particular, to a data transmission method and device.

Background technique

Existing long term evolution (long term evolution, LTE) systems can support machine type communication (machine type communication, MTC) services. MTC refers to the deployment of various devices with certain perception, calculation, execution and communication capabilities to obtain information in the physical world, and to realize information transmission, coordination and processing through the network, so as to realize the interconnection of people and things, and things. In the prior art, the transmission and reception bandwidth supported by the terminal equipment applied to MTC is smaller than the system bandwidth. In order to enable the LTE system to support the MTC service, the related art divides the system bandwidth into several narrowbands, so that the terminal equipment supporting MTC is in the narrowband. transfer data. In the following, in order to distinguish the terminal equipment that supports the MTC service, the terminal equipment that does not support the MTC service in the LTE system is referred to as the traditional terminal equipment.

In the existing transmission mechanism, the position of the narrowband divided in the system bandwidth is fixed. Therefore, the terminal equipment supporting MTC can only transmit data in the narrowband, resulting in insufficient frequency resources used for data transmission of the terminal equipment supporting MTC. Flexibility, which in turn may affect the data transmission of legacy end devices.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a data transmission method and device, which are used to solve the problem that the position of the narrowband divided in the existing system bandwidth is fixed, so that the terminal equipment supporting MTC can only transmit data in the narrowband, and the frequency resources used for data transmission are insufficient. Flexible questions.

In a first aspect, an embodiment of the present application provides a data transmission method, the method includes: a network device sends first downlink control information (DCI) to a terminal device, where the first DCI includes a first field and a first DCI. Two fields, the first field is used to indicate the first frequency resource, the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, the terminal device receives the first DCI sent by the network device, and according to the first DCI The first field and the second field included in a DCI determine the second frequency resource, the network device sends downlink data to the terminal device on the second frequency resource, and the terminal device receives the downlink data sent by the network device on the second frequency resource, or, The terminal device sends uplink data to the network device on the second frequency resource, and the network device receives the uplink data sent by the terminal device on the second frequency resource.

Through the above method, the network device can flexibly configure the frequency resources in the system bandwidth for the terminal device. Compared with the prior art that can only configure the first frequency resource in the narrowband for the terminal device, the method of the present application is the most efficient for the traditional terminal device. With the remaining physical resource blocks (PRBs), it is possible to maximize throughput. In addition, the terminal device can send or receive data on the second frequency resource. Compared with the method in the prior art that can only send or receive data on the first frequency resource, the method provided by the present application does not require the terminal device to transmit or receive data in a narrow band. data, the frequency resources used for data transmission are more flexible.

In a second aspect, an embodiment of the present application provides another data transmission method, the method comprising: when the network device determines that the coverage enhancement mode of the terminal device is the coverage enhancement mode B (CE mode B), sending a message to the terminal device sending a first DCI, where the first DCI includes a first field and a second field, the first field is used to indicate the first frequency resource, and the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, The terminal device receives the first DCI sent by the network device, and determines the second frequency resource according to the first field and the second field included in the first DCI. The downlink data sent by the network device is received on the second frequency resource, or the terminal device sends uplink data to the network device on the second frequency resource, and the network device receives the uplink data sent by the terminal device on the second frequency resource. And/or, when determining that the coverage enhancement mode of the terminal device is the coverage enhancement mode A (CE mode A), the network device sends a second DCI to the terminal device, where the second DCI includes a third field, and the third field is used for Indicates the third frequency resource, the third frequency resource includes N consecutive PRBs in the system bandwidth, N is one of 1, 2, 3, 4, 5 and 6, the terminal device receives the second DCI sent by the network device, and The third frequency resource is determined according to the third field included in the second DCI, the network device sends downlink data to the terminal device on the third frequency resource, and the terminal device receives the downlink data sent by the network device on the third frequency resource, or the terminal device The uplink data is sent to the network device on the third frequency resource, and the network device receives the uplink data sent by the terminal device on the third frequency resource.

Through the above method, the network device can determine which frequency resource is configured for the terminal device through the coverage enhancement mode of the terminal device. Specifically, when it is determined that the coverage enhancement mode of the terminal device is CE mode B, the second frequency resource is configured for the terminal device. The terminal device can send or receive data on the second frequency resource. Compared with the method in the prior art that can only send or receive data on the first frequency resource, the method provided by this application can flexibly configure the terminal device to send or receive data. The frequency resource for receiving data; and/or, when it is determined that the coverage enhancement mode of the terminal device is CE mode A, configure a third frequency resource for the terminal device, and the third frequency resource is N consecutive PRBs in the system bandwidth. The N PRBs may be PRBs in different narrowbands, and certainly not all PRBs in narrowbands. Compared with the method in the prior art that can only transmit or receive data at the first frequency resource, the method provided by the present application is for the terminal The device configures N consecutive PRBs in the system bandwidth, thereby realizing flexible configuration of frequency resources for sending or receiving data for the terminal device.

In this embodiment of the present application, how the second field indicates the offset state between the second frequency resource and the first frequency resource is not limited. For example, different offset states between the second frequency resource and the first frequency resource may be indicated by multiple bits mapped in the second field, or the second frequency may be indicated by different values corresponding to one bit mapped in the second field Different offset states between the resource and the first frequency resource.

In a possible implementation manner, the use of the second field to indicate the offset state between the second frequency resource and the first frequency resource includes: when the bit mapped in the second field takes the first value, the second field indicates The second frequency resource is not offset relative to the first frequency resource; when the bit mapped in the second field takes a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

In this embodiment of the present application, the bits mapped in the second field take different values to indicate that the second frequency resource is not offset or offset relative to the first frequency resource, and the network device can flexibly configure the transmission or reception of data for the terminal device through DCI. For the second frequency resource, compared with indicating the specific relative positional relationship between the second frequency resource and the first frequency resource through the DCI, the method of the present application can save the bit overhead of the DCI.

Optionally, when the second frequency resource is a resource within a narrowband, the value of the bit mapped in the second field is the first value; and/or, not all of the second frequency resource is a resource within a narrowband In the case of , the value of the bit mapped in the second field is the second value. That is, in the present application, when the second frequency resource is a resource within a narrowband, the second field indicates that the second frequency resource is not offset from the first frequency resource, and not all of the second frequency resource is a resource within a narrowband In the case of , the second field indicates the offset of the second frequency resource relative to the first frequency resource.

In a possible design, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit mapped in the second field takes a first value, determining the first frequency resource as the second frequency resource; when the value of the bit mapped in the second field is the second value, the second frequency resource is obtained by offsetting the first frequency resource in the first offset direction by a first offset.

Optionally, the first offset direction is preset, or the first offset direction is configured through high-layer signaling; and the first offset is a preset value, or the first offset is The value configured by higher layer signaling. In this application, when the second field indicates the offset of the second frequency resource relative to the first frequency resource, the terminal device can obtain the offset of the first frequency resource according to the preset first offset direction and the first offset. For the second frequency resource, the second frequency resource may also be obtained by offsetting the first frequency resource according to the first offset direction and the first offset amount configured by the network device through high-layer signaling.

Optionally, the number of bits mapped in the second field is 1.

In another possible implementation, the second field is used to indicate the offset state between the second frequency resource and the first frequency resource. Indicates that the second frequency domain resource is offset relative to the first frequency domain resource in the direction in which the PRB number decreases; when the bit mapped in the second field takes the second value, the second field indicates that the second frequency domain resource is relative to the first frequency domain. The resources are shifted in the direction of increasing PRB numbers.

In this embodiment of the present application, the bits mapped in the second field take different values to indicate that the second frequency resource is offset in the direction of decreasing PRB number and in the direction of increasing PRB number relative to the first frequency resource. The network device can The second frequency resource for sending or receiving data is flexibly configured for the terminal device through DCI, and the bit overhead of the DCI can be saved by the method of the present application compared to indicating the specific relative positional relationship between the second frequency resource and the first frequency resource through DCI .

In a possible design, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit mapped in the second field takes a first value, reducing the first frequency resource to the PRB number The second frequency resource is obtained by offsetting the second frequency resource in the direction of the Two frequency resources.

In a possible design, the second offset is a preset value, or the second offset is a value configured through high-layer signaling; and the third offset is a preset value, or, The third offset is a value configured through higher layer signaling. In this application, when the second frequency domain resource is offset in the direction of decreasing PRB number relative to the first frequency domain resource, the terminal device can offset the first frequency resource according to the preset second offset to obtain the second frequency domain resource. For the frequency resource, the second frequency resource can also be obtained by offsetting the first frequency resource according to the second offset configured by the network device through high-layer signaling. In the case where the second frequency domain resource is offset in the direction of increasing PRB number relative to the first frequency domain resource, the terminal device may offset the first frequency resource according to the preset third offset to obtain the second frequency resource, The second frequency resource may also be obtained by offsetting the first frequency resource according to the third offset configured by the network device through high-layer signaling.

In a possible design, before sending the first DCI to the terminal device, the network device may send the first signaling to the terminal device, and the terminal device receives the first signaling sent by the network device, and the first signaling is high-level signaling . The first signaling includes first information, and the first information is used to indicate that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource. The network device may indicate that the first DCI includes a second field for indicating an offset state of the second frequency resource relative to the first frequency resource by sending high-layer signaling to the terminal device. For example, the terminal device may be instructed to receive the first DCI through higher layer signaling, and of course, the terminal device may also be instructed through higher layer signaling to receive the DCI that does not include the second field. For another example, the second frequency resource may be indicated by high layer signaling to be offset relative to the first frequency resource, and of course, the second frequency resource may be indicated by high layer signaling that is not offset relative to the first frequency resource. For another example, the terminal equipment may be instructed to perform resource offset through high layer signaling, and of course, the terminal equipment may be instructed not to perform resource offset through high layer signaling. Specifically, when the high-layer signaling indicates that the second frequency resource is not offset relative to the first frequency resource, or when the high-layer signaling instructs the terminal device not to perform resource offset, the terminal device may not parse the first frequency resource in the first DCI. Two fields, or the terminal device receives DCI that does not include the second field. Specifically, when the second frequency resource is instructed to offset relative to the first frequency resource through high layer signaling, or when the terminal device is instructed to perform resource offset through high layer signaling, the terminal device receives the first DCI.

In a possible design, the first offset direction is the direction in which the PRB number decreases; or, the first offset direction is the direction in which the PRB number increases; or, when the first frequency resource is located at the center frequency point of the system bandwidth, the PRB In the case of the side where the number decreases, the first offset direction is the direction in which the PRB number decreases; and when the first frequency resource is located on the side of the system bandwidth center frequency point where the PRB number increases, the first offset The direction is the direction in which the PRB number increases; or, when the first frequency resource is located on the side where the PRB number of the center frequency point of the system bandwidth decreases, the first offset direction is the direction in which the PRB number increases; When the resource is located on the side where the PRB number of the center frequency of the system bandwidth increases, the first offset direction is the direction in which the PRB number decreases.

In a possible design, the first offset direction corresponds to at least one of a system bandwidth, a narrowband where the first frequency resource is located, or a type of the second frequency resource.

The types of the second frequency resources include physical uplink shared channel (PUSCH) frequency resources and physical downlink shared channel (physical downlink shared channel, PDSCH) frequency resources.

In a possible design, the first offset, the second offset and the third offset are respectively associated with at least one of the system bandwidth, the narrowband where the first frequency resource is located, and the type of the second frequency resource Correspondence.

The types of the second frequency resources include PUSCH frequency resources and PDSCH frequency resources.

In a third aspect, an embodiment of the present application provides a network device, where the network device has a function of implementing the behavior of the network device in the method example of the first aspect and the second aspect. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the network device includes a transceiver unit and a processing unit, and these units can perform the corresponding functions in the method examples in the first aspect and the second aspect. Do repeat.

In a fourth aspect, an embodiment of the present application provides a network device, where the network device has a function of implementing the behavior of the network device in the method example of the first aspect and the second aspect. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. The modules may be software and/or hardware.

In a possible design, the structure of the network device includes a memory, a transceiver, a processor and a bus, wherein the memory, the transceiver and the processor are connected through the bus; the processor calls are stored in The instructions in the memory execute the above method.

In a fifth aspect, an embodiment of the present application provides a terminal device, where the terminal device has a function of implementing the terminal device behavior in the method example of the first aspect and the second aspect. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the terminal device includes a transceiver unit and a processing unit, and these units can perform the corresponding functions in the method example in the first aspect and the second aspect. For details, please refer to the detailed description in the method example. Do repeat.

In a sixth aspect, an embodiment of the present application provides a terminal device, where the terminal device has a function of implementing the terminal device behavior in the method example of the first aspect and the second aspect. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. The modules may be software and/or hardware.

In a possible design, the structure of the terminal device includes a memory, a transceiver, a processor and a bus, wherein the memory, the transceiver and the processor are connected through the bus; the processor calls are stored in The instructions in the memory execute the above method.

In a seventh aspect, the embodiments of the present application further provide a computer storage medium, where the computer storage medium stores computer-executable instructions, and when the computer-executable instructions are invoked by a computer, the computer executes the first aspect , the second aspect, or the method provided by any one of the first aspect and the second aspect.

In an eighth aspect, the embodiments of the present application further provide a computer program product, where instructions are stored in the computer program product, and when the computer program product is run on a computer, the computer can execute the first aspect, the second aspect, or the first aspect described above. The method described in any one of the possible designs of the aspect and the second aspect.

In a ninth aspect, a communication apparatus is provided, and the communication apparatus is configured to perform the function of the behavior of the terminal device or the network device in the above method. These functions can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions.

Description of drawings

FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

2 is a schematic diagram of the division of narrowband and RBG in the system bandwidth provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of resource allocation according to an embodiment of the present application;

FIG. 4 is another schematic diagram of resource allocation provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart corresponding to a data transmission method provided by an embodiment of the present application;

FIG. 6 is a schematic flowchart corresponding to another data transmission method provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of resource allocation according to an embodiment of the present application;

FIG. 8 is another schematic diagram of resource allocation provided by an embodiment of the present application;

FIG. 9 is another schematic diagram of resource allocation provided by an embodiment of the present application;

FIG. 10 is another schematic diagram of resource allocation provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a network device according to an embodiment of the application;

FIG. 12 is a schematic structural diagram of another network device provided by an embodiment of the present application;

FIG. 13 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

FIG. 14 is a schematic structural diagram of another terminal device provided by an embodiment of the present application.

Detailed ways

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

First, some terms in this application will be explained so as to facilitate the understanding of those skilled in the art.

1), terminal equipment, refers to the equipment that provides voice and/or data connectivity to users, also known as user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) Wait. For example, handheld devices, in-vehicle devices, etc. with wireless connectivity. At present, some examples of terminals are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality ( augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid , wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, bandwidth-reduced low-complexity UE (BL) UE), coverage enhancement UE (coverage enhancement UE, CE UE), etc.

2) A network device refers to a device in a wireless network, such as a radio access network (RAN) node (or device) that accesses a terminal device to the wireless network, which may also be called a base station. At present, some examples of RAN nodes are: evolved Node B (gNB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), Baseband unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wifi) access point (accesspoint, AP), etc. Additionally, in one network structure, the RAN may include a centralized unit (CU) node and a distributed unit (DU) node. This structure separates the protocol layers of the eNB in the long term evolution (LTE) system. Some of the functions of the protocol layers are centrally controlled by the CU, and the remaining part or all of the functions of the protocol layers are distributed in the DU, which is controlled by the CU. Centralized control of DU.

3) In the description of this application, unless otherwise specified, "a plurality" refers to two or more, and other quantifiers are similar. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are an "or" relationship.

4) Interaction refers to the process of transmitting information to each other by both parties. The information transmitted here can be the same or different. For example, the two interacting parties are base station 1 and base station 2. It may be that base station 1 requests information from base station 2, and base station 2 provides base station 1 with the information requested by base station 1. Of course, the base station 1 and the base station 2 may also request information from each other, and the requested information here may be the same or different.

5) The terms "network" and "system" are often used interchangeably, but those skilled in the art can understand their meanings. Information (information), signal (signal), message (message), and channel (channel) can sometimes be mixed. "Of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be pointed out that when the difference is not emphasized, the meanings they intend to express are the same.

The data transmission method and device provided in the embodiments of the present application can be applied to a communication system, in which there are entities that send uplink and downlink data, and entities that receive uplink and downlink data. For the convenience of description in the embodiments of the present application, the entity sending downlink data is a network device, the entity receiving downlink data is a terminal device, the entity sending uplink data is a terminal device, and the entity receiving uplink data is a network device as an example for description. Of course it is not limited.

In a possible example, the data transmission method provided in the embodiment of the present application may be applied to an LTE system or an LTE-A system that supports MTC services. Referring to FIG. 1 , it is a possible system architecture diagram to which this application applies. As shown in FIG. 1 , the system architecture includes network equipment and terminal equipment 1 to terminal equipment 6 . In this system architecture, network equipment can be understood as an entity used to send or receive signals on the network side, and can send or receive signals to terminal equipment 1 ~ Terminal equipment 6 sends downlink data, and may also receive uplink data sent by terminal equipment 1 to terminal equipment 6 . Terminal equipment 1 to terminal equipment 6 can be any form of terminal equipment, such as BLUE, CE UE, etc. that support MTC service. In this application, in order to distinguish the terminal equipment that supports MTC service, the terminal equipment that does not support MTC service in the LTE system is used. The equipment is referred to as a traditional terminal equipment. Unless otherwise specified in the embodiments of this application, the involved terminal equipment refers to the terminal equipment supporting the MTC service.

It should be understood that the system architecture shown in FIG. 1 only takes one network device as an example for description, but the embodiments of the present application are not limited to this. For example, the system architecture may also include more network devices; similarly, the system The architecture may also include more terminal devices, and may also include other devices.

It can be understood that the communication system to which the solutions in the embodiments of the present application are applied may be an LTE system or an LTE-A system. Of course, the solutions in the embodiments of the present application can also be applied to other wireless communication systems, for example, can also be applied to 5G New Radio (NR) network. Corresponding names of network devices and terminal devices involved in the embodiments of the present application may be names of corresponding functions in a wireless communication network.

In the system architecture shown in FIG. 1 , the network device can communicate with any terminal device from the terminal device 1 to the terminal device 6 . In the application scenario supporting MTC services, taking the downlink transmission between the network device and the terminal device 3 as an example, assuming that the MTC service is transmitted between the network device and the terminal device 3, before the network device sends the downlink data to the terminal device 3, it needs to First, configure frequency resources for the terminal equipment 3 for transmitting downlink data through DCI, and then send downlink data to the terminal equipment 3 on the configured frequency resources, and the terminal equipment 3 can receive the downlink data on the configured frequency resources. The uplink transmission between the network device and the terminal device 3 is taken as an example. Before the terminal device 3 sends the uplink data to the network device, it needs to receive the frequency resources configured by the network device through the DCI for transmitting uplink data, and in the configured frequency resources. The uplink data is sent to the network device on the frequency resource, and the network device receives the uplink data on the frequency resource. In addition, in the system architecture shown in FIG. 1 , the terminal device 4 to the terminal device 6 may also form a communication subsystem. Taking the downlink transmission between network equipment and terminal equipment as an example, the network equipment sends downlink data to terminal equipment 1, terminal equipment 2, terminal equipment 3, terminal equipment 5, etc.; terminal equipment 5 can send downlink data to terminal equipment 4 and terminal equipment. Device 6; terminal device 4 and terminal device 6 receive downlink data sent by terminal device 5. In the prior art, the network equipment can only configure the frequency resources in the narrowband for the terminal equipment supporting the MTC service to transmit uplink or downlink data, and the position of the narrowband divided in the existing system bandwidth is fixed, resulting in the terminal equipment supporting the MTC service. Uplink or downlink data can only be transmitted in a narrow band, so that the frequency resources used for data transmission are not flexible enough, which may affect the data transmission of traditional terminal equipment.

个窄带，其中，

表示下行系统带宽中包含的下行PRB的个数，

表示向下取整运算。将系统带宽中的窄带按照PRB编号递增的顺序进行编号，即为窄带编号或窄带索引，窄带索引表示为

在各种系统带宽中的窄带划分，如图2所示，例如，对于3MHz的系统带宽，索引为0的窄带中包含编号是1～6的PRB。The system bandwidth of the LTE system, that is, the bandwidth supported by one carrier, can be one of 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, and 20MHz. 100 PRBs. In the release (Rel)-13 of the LTE system, the BL UE/CE UE can support a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH) bandwidth of 1.4 MHz. In the LTE system Rel-14, some BL UEs/CE UEs can support a PUSCH and/or PDSCH bandwidth of 5 MHz. In order for the LTE system to support the MTC service, the system bandwidth is divided into several narrow bands. A narrow band contains the frequency width of 6 consecutive PRBs in frequency. Take downlink transmission as an example, there are total in the downlink system bandwidth

a narrow band, where,

Indicates the number of downlink PRBs included in the downlink system bandwidth,

Represents a round-down operation. Number the narrowbands in the system bandwidth in the order of increasing PRB numbers, that is, the narrowband number or narrowband index. The narrowband index is expressed as

Narrowband division in various system bandwidths, as shown in FIG. 2 , for example, for a system bandwidth of 3 MHz, the narrowband with index 0 includes PRBs numbered 1-6.

The embodiments of the present application are described below by taking an example that the terminal device supporting the MTC service is the CE UE. For a CE UE that only supports a maximum PDSCH or PUSCH bandwidth of 1.4 MHz, the PDSCH or PUSCH resources allocated by the network device through DCI are resources within a narrow band. LTE Rel-13 provides two coverage enhancement modes for CE UEs, one is coverage enhancement mode A (CE mode A) for a smaller coverage enhancement degree, and the other is a coverage enhancement mode for a larger coverage enhancement degree B (CE mode B). For CE UEs in different coverage enhancement modes, the network device configures frequency resources for transmitting data for them through DCI in different formats. Specifically, the narrowband allocated for the CE UE and the PRB allocated in the narrowband are indicated by bits included in the DCI. Among them, the network equipment allocates PUSCH resources to CE UEs in CE mode A coverage mode through DCI format 6-0A, and for CE UEs supporting a maximum PUSCH bandwidth of 1.4MHz, the network equipment allocates 1, 2, 3, 4, 5, or 6 PRBs. The network device allocates PUSCH resources to CE UEs in CE mode B coverage mode through DCI format 6-0B, and allocates 1 or 2 PRBs within a narrowband for CE UEs supporting a maximum PUSCH bandwidth of 1.4 MHz. The network device allocates PDSCH resources to CE UEs in CE mode A coverage mode through DCI format 6-1A. For CE UEs supporting a maximum PDSCH bandwidth of 1.4MHz, allocate 1, 2, 3, 4, 5, or 6 PRBs. The network device allocates PDSCH resources to CE UEs in CE mode B coverage mode through DCI format 6-1B. For CE UEs supporting a maximum PDSCH bandwidth of 1.4 MHz, 4 or 6 PRBs within a narrowband are allocated.

在系统带宽包含的所有RBG中，有

个RBG包含的VRB数是P，如果

则有1个RBG包含的VRB数是

其中，

表示向上取整运算，mod表示取模运算，其中，P的取值和系统带宽有关，如表1所示。在各种系统带宽中的RBG划分，如图2所示。Due to the burstiness of mobile broadband services, it is likely that only one LTE legacy terminal device exists in some subframes. For the PDSCH resource allocation of traditional terminal equipment in the LTE system, resource allocation type 0 can provide the most efficient spectrum utilization and the highest throughput for a single terminal equipment, so it is a commonly used resource allocation type. Specifically, for resource allocation type 0, a resource block group (RBG) is divided in the system bandwidth, the resource block allocation information included in the DCI is used to indicate the RBG allocated for the PDSCH, and the resource block allocation information includes N _RBGs Bit, each bit corresponds to an RBG, and the value of each bit indicates whether the corresponding RBG is allocated to the PDSCH of the terminal device. An RBG consists of P consecutive centralized virtual resource blocks (virtual resource blocks, VRBs), and a VRB and a PRB have the same size. The centralized VRB is directly mapped to the PRB, and the VRB numbered n _VRB corresponds to the PRB numbered n _PRB . Among them, the number of RBGs included in the downlink system bandwidth is denoted as N _RBG ,

Among all RBGs included in the system bandwidth, there are

The number of VRBs contained in an RBG is P, if

Then the number of VRBs contained in 1 RBG is

in,

Represents an upward rounding operation, mod represents a modulo operation, where the value of P is related to the system bandwidth, as shown in Table 1. The RBG division in various system bandwidths is shown in Figure 2.

Table 1: Example of the correspondence between the value of P and the number of PRBs included in the system bandwidth

Since the boundary of the narrowband and the boundary of the RBG may not be aligned, for example, as shown in Figure 3, taking the 10MHz system bandwidth as an example, when resources need to be allocated for legacy UEs and BL UEs/CE UEs in one subframe, if the index The narrowband of 1 is allocated to the BL UE/CE UE, that is, the PRBs numbered 7 to 12 are allocated to the BL UE/CE UE, and the RBGs numbered 2, 3, and 4 cannot be allocated to the traditional UE. The traditional terminal equipment PRB6, PRB13 and PRB14 cannot be used, that is, the traditional terminal equipment cannot utilize the remaining PRBs at the most, and cannot maximize the throughput.

For uplink data of traditional terminal equipment, continuous PRBs need to be allocated in the system bandwidth. According to the existing narrowband division, the uplink PRB in the narrowband is allocated to the BL UE/CE UE, which may cause fragmentation of uplink resources in the system bandwidth. As shown in Figure 4, taking 10MHz system bandwidth as an example, if the narrowband with index 1 is allocated to BLUE/CE UE, that is, PRBs numbered 7 to 12 are allocated to BL UE/CE UE, and the numbers are 0 to 5 The PRB is a physical random access channel (PRACH) resource, so the PRB numbered 6 and the PRBs numbered 13 to 49 are discontinuous and cannot be used as uplink resources of the same traditional terminal equipment at the same time, so the traditional terminal equipment cannot The maximum utilization of the remaining PRBs cannot maximize throughput.

According to the above content, in the existing transmission mechanism, the position of the narrowband divided in the system bandwidth is fixed. Therefore, the terminal equipment supporting MTC can only transmit data in the narrowband, resulting in the data transmission of the terminal equipment supporting MTC using The frequency resources of the system are not flexible enough, which may cause the fragmentation of the frequency resources in the system bandwidth, and thus the traditional terminal equipment cannot make the most of the remaining PRBs and cannot maximize the throughput.

Based on this, the present application provides a data transmission method, which is used to solve the problem that the position of the narrowband divided in the existing system bandwidth is fixed, so that the terminal equipment supporting MTC can only transmit data in the narrowband, and the frequency resources used for data transmission are not flexible enough. This further leads to the problem that the traditional terminal equipment cannot make the most of the remaining PRBs and cannot maximize the throughput.

In this embodiment of the present application, for convenience of description, the frequency resource within the narrow band allocated by the network device to the terminal device may be referred to as the first frequency resource.

FIG. 5 is a schematic flowchart corresponding to a data transmission method provided by the present application. As shown in Figure 5, including:

S101: The network device sends the first DCI to the terminal device, and the terminal device receives the first DCI sent by the network device.

The first DCI includes a first field and a second field, the first field is used to indicate the first frequency resource, and the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

Specifically, the offset state between the second frequency resource and the first frequency resource may include: the second frequency resource is offset relative to the first frequency resource, and the second frequency resource is not offset relative to the first frequency resource; or, The second frequency resource is shifted in the direction of decreasing PRB number with respect to the first frequency resource, and the second frequency resource is shifted in the direction of increasing PRB number with respect to the first frequency resource.

In this embodiment of the present application, by including a second field in the first DCI sent by the network device to the terminal device to indicate the offset state between the second frequency resource and the first frequency resource, the terminal device can and the offset state indicated by the second field determines the location of the second frequency resource, and then sends uplink data or receives downlink data on the second frequency resource.

It should be noted that if the terminal device sends uplink data on the second frequency resource, the second frequency resource is the PUSCH resource, and if the terminal device receives downlink data on the second frequency resource, the second frequency resource is the PDSCH resource.

S102: The terminal device determines the second frequency resource according to the first field and the second field included in the first DCI.

In this embodiment of the present application, after receiving the first DCI sent by the network device, the terminal device may determine the second frequency resource according to the first field and the second field included in the first DCI. Specifically, the first frequency resource may be determined according to the indication of the first field, and then the second frequency resource may be determined according to the first frequency resource and an offset state of the second frequency resource relative to the first frequency resource.

S103a: The network device sends downlink data to the terminal device on the second frequency resource, and the terminal device receives the downlink data sent by the network device on the second frequency resource.

In this embodiment of the present application, after the terminal device determines the second frequency resource according to the first field and the second field included in the first DCI, it can receive downlink data sent by the network device on the second frequency resource. At this time, the second frequency resource Compared with the method in which downlink data can only be received on the first frequency resource, the network device can flexibly configure frequency resources for receiving downlink data for the terminal device according to the actual application according to the method of the present application.

S103b: The terminal device sends uplink data to the network device on the second frequency resource, and the network device receives the uplink data sent by the terminal device on the second frequency resource.

In the embodiment of the present application, after the terminal device determines the second frequency resource according to the first field and the second field included in the first DCI, it can send uplink data to the network device on the second frequency resource. At this time, the second frequency resource is Compared with the method of sending uplink data only on the first frequency resource, the method of the present application enables the network device to flexibly configure the terminal device with frequency resources for sending uplink data according to practical applications.

In this embodiment of the present application, whether S103a or S103b is specifically performed depends on the type of the second frequency resource. Specifically, when the second frequency resource is the frequency resource of PUSCH, S103b is executed, and when the second frequency resource is the frequency resource of PDSCH, S103a is executed.

FIG. 6 is a schematic flowchart corresponding to another data transmission method provided by the present application. As shown in Figure 6, including:

S201: In the case that the network device determines that the coverage enhancement mode of the terminal device is CE mode B, the network device sends the first DCI to the terminal device, and the terminal device receives the first DCI sent by the network device.

The first DCI includes a first field and a second field, the first field is used to indicate the first frequency resource, and the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

Specifically, the offset state between the second frequency resource and the first frequency resource may include: the second frequency resource is offset relative to the first frequency resource, and the second frequency resource is not offset relative to the first frequency resource; or, The second frequency resource is shifted in the direction of decreasing PRB number with respect to the first frequency resource, and the second frequency resource is shifted in the direction of increasing PRB number with respect to the first frequency resource.

In this embodiment of the present application, the first DCI sent by the network device to the terminal device includes a second field indicating the offset state between the second frequency resource and the first frequency resource, so that the terminal device can The offset state indicated by the field determines the location of the second frequency resource, and then sends uplink data or receives downlink data on the second frequency resource.

S202: The terminal device determines the second frequency resource according to the first field and the second field included in the first DCI.

In this embodiment of the present application, after receiving the first DCI sent by the network device, the terminal device may determine the second frequency resource according to the first field and the second field included in the first DCI. Specifically, according to the indication of the first field, it may determine the second frequency resource. The first frequency resource is determined, and then the second frequency resource may be determined according to the first frequency resource and an offset state of the second frequency resource relative to the first frequency resource.

S203a: The network device sends downlink data to the terminal device on the second frequency resource, and the terminal device receives the downlink data sent by the network device on the second frequency resource.

In this embodiment of the present application, after determining the second frequency resource according to the first field and the second field included in the first DCI, the terminal device can receive downlink data sent by the network device on the second frequency resource. At this time, the second frequency resource Compared with the method of receiving downlink data only on the first frequency resource, the network device can flexibly configure the frequency resource for receiving downlink data for the terminal device according to the actual application according to the method of the present application.

S203b: The terminal device sends uplink data to the network device on the second frequency resource, and the network device receives the uplink data sent by the terminal device on the second frequency resource.

In the embodiment of the present application, after the terminal device determines the second frequency resource according to the first field and the second field included in the first DCI, it can send uplink data to the network device on the second frequency resource. At this time, the second frequency resource is Compared with the method of sending uplink data only on the first frequency resource, the method of the present application enables the network device to flexibly configure the terminal device with frequency resources for sending uplink data according to practical applications.

In this embodiment of the present application, whether S203a or S203b is specifically performed depends on the type of the second frequency resource. Specifically, when the second frequency resource is a PUSCH frequency resource, S203b is performed, and when the second frequency resource is a PDSCH frequency resource, S203a is performed.

S204: In the case that the network device determines that the coverage enhancement mode of the terminal device is CE mode A, the network device sends the second DCI to the terminal device, and the terminal device receives the second DCI sent by the network device.

Wherein, the second DCI includes a third field, and the third field is used to indicate a third frequency resource. The third frequency resource includes N consecutive PRBs in the system bandwidth, and N is one of 1, 2, 3, 4, 5, and 6. A sort of. The third field may indicate N consecutive PRBs anywhere in the system bandwidth.

S205: The terminal device determines the third frequency resource according to the third field included in the second DCI.

In this embodiment of the present application, after receiving the second DCI sent by the network device, the terminal device may determine the third frequency resource according to the third field included in the second DCI.

S206a: The network device sends downlink data to the terminal device on the third frequency resource, and the terminal device receives the downlink data sent by the network device on the third frequency resource.

In this embodiment of the present application, after the terminal device determines the third frequency resource according to the third field included in the second DCI, it can receive downlink data sent by the network device on the third frequency resource, compared to only the first frequency resource. In the method for receiving downlink data, with the method of the present application, the network device can flexibly configure frequency resources for receiving downlink data for the terminal device according to the actual application.

S206b: The terminal device sends uplink data to the network device on the third frequency resource, and the network device receives the uplink data sent by the terminal device on the third frequency resource.

In the embodiment of the present application, after the terminal device determines the third frequency resource according to the third field included in the second DCI, it can send uplink data to the network device on the third frequency resource, compared to only sending the uplink data on the first frequency resource In the method for uplink data, through the method of the present application, the network device can flexibly configure the terminal device with frequency resources for sending uplink data according to the actual application.

In this embodiment of the present application, whether to perform S206a or S206b specifically depends on the type of the third frequency resource. Specifically, when the third frequency resource is the frequency resource of PUSCH, S206b is executed, and when the third frequency resource is the frequency resource of PDSCH, S206a is executed.

In this embodiment of the present application, S201, S202, and S203a (S203b) are performed when the coverage enhancement mode of the terminal device is CEmode B. S204, S205, and S206a (S206b) are performed when the coverage enhancement mode of the terminal device is CEmode A. The sequence of executing S201, S202, S203a (S203b) when the coverage enhancement mode of the terminal device is CE mode B and executing S204, S205, S206a (S206b) when the coverage enhancement mode of the terminal device is CE mode A The embodiments of the present application are not limited.

个比特，第二比特包括5个比特。对于CE mode B的PUSCH资源分配，第一比特包括

个比特，第二比特包括3个比特。对于CE mode A的PDSCH资源分配，第一比特包括

个比特，第二比特包括5个比特。对于CE mode B的PDSCH资源分配，第一比特包括

个比特，第二比特包括1个比特。或者，第一字段映射的比特为支持5MHz最大PDSCH或PUSCH带宽的终端设备分配资源。当第一字段为支持5MHz最大PDSCH或PUSCH带宽的终端设备分配资源时，分配的资源最多包括4个窄带。所述第一字段对资源的分配方式和DCI格式6-0A、6-0B、6-1A、或者6-1B中的比特对资源的分配方式相同。其中，

表示上行系统带宽中包含的上行PRB的个数。In the embodiment of the present application, the first field allocates resources for terminal equipment that supports a maximum PDSCH or PUSCH bandwidth of 1.4 MHz, and the bits mapped in the first field include the first bit used to indicate the narrowband corresponding index allocated for the terminal equipment, and the first bit used for Indicates the second bit of the PRB allocated in the allocated narrowband. For PUSCH resource allocation for CE mode A, the first bit includes

bits, and the second bit includes 5 bits. For PUSCH resource allocation for CE mode B, the first bit includes

bits, and the second bit includes 3 bits. For PDSCH resource allocation for CE mode A, the first bit includes

bits, and the second bit includes 5 bits. For PDSCH resource allocation for CE mode B, the first bit includes

bits, and the second bit includes 1 bit. Alternatively, the bits mapped in the first field allocate resources for terminal equipment that supports a maximum PDSCH or PUSCH bandwidth of 5 MHz. When the first field allocates resources for a terminal device supporting a maximum PDSCH or PUSCH bandwidth of 5MHz, the allocated resources include at most 4 narrowbands. The resource allocation manner of the first field is the same as the allocation manner of the bits in the DCI format 6-0A, 6-0B, 6-1A, or 6-1B to resources. in,

Indicates the number of uplink PRBs included in the uplink system bandwidth.

In this embodiment of the present application, the number of bits mapped to the second field is not limited. In one possible design, the number of bits mapped by the second field is one.

Optionally, only when the system bandwidth is greater than 1.4 MHz, the network device sets the second field in the first DCI.

In this embodiment of the present application, how the second field indicates the offset state between the second frequency resource and the first frequency resource is not limited. Specifically, this application provides the following two possible situations:

In the first case, the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, including:

When the bit mapped in the second field takes a value of the first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource. When the bits mapped in the second field take the second value, the second field indicates the offset of the second frequency resource relative to the first frequency resource. For example, assuming that the number of bits mapped in the second field is 1, the value of 1 bit mapped in the second field can be set to 0 to indicate that the second frequency resource is not offset relative to the first frequency resource, and the 1 bit mapped in the second field can be set to 0. A value of 1 indicates that the second frequency resource is offset relative to the first frequency resource; of course, the value of 1 bit mapped by the second field can also be used to indicate that the second frequency resource is not offset relative to the first frequency resource, and the second field The value of the mapped 1-bit value is 0 to indicate the offset of the second frequency resource relative to the first frequency resource, and this application specifies the value of the bit mapped by the second field to indicate the offset between the second frequency resource and the first frequency resource. The shift state is not limited. The fact that the second frequency resource is not offset relative to the first frequency resource means that the second frequency resource and the first frequency resource are the same frequency resource. The offset of the second frequency resource relative to the first frequency resource means that the second frequency resource and the first frequency resource are different frequency resources. The offset of the second frequency resource relative to the first frequency resource indicates that the number of resource blocks included in the second frequency resource is the same as the number of resource blocks included in the first frequency resource, but the position of the second frequency resource in the system bandwidth is the same as that of the first frequency resource. Resources do not have the same location in the system bandwidth.

Optionally, in the case where the second frequency resource is a resource within a narrowband, the value of the bit mapped in the second field is the first value, and/or, not all of the second frequency resource is a resource within a narrowband In the case of , the value of the bit mapped in the second field is the second value. That is, in the present application, when the second frequency resource is a resource within a narrowband, the second field indicates that the second frequency resource is not offset from the first frequency resource, and not all of the second frequency resource is a resource within a narrowband In the case of , the second field indicates the offset of the second frequency resource relative to the first frequency resource.

In this implementation manner, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit mapped in the second field takes a first value, determining the first frequency resource as the second frequency resource , when the value of the bit mapped in the second field is the second value, the second frequency resource is obtained by offsetting the first frequency resource in the first offset direction by a first offset.

In this embodiment of the present application, the first offset direction may be preset or configured through high-layer signaling. The first offset may be a preset value or a value configured through high-layer signaling, which is not limited in this application for comparison. For example, in the present application, in the case where the second field indicates the offset of the second frequency resource relative to the first frequency resource, the terminal device may convert the first frequency resource according to the preset first offset direction and the first offset The second frequency resource is obtained by the resource offset, and the second frequency resource can also be obtained by offsetting the first frequency resource according to the first offset direction and the first offset amount configured by the network device through high-layer signaling.

In this embodiment of the present application, the first offset direction is not limited. Specifically, this application provides the following two possible situations:

Case 1: There is a correspondence between the first offset direction and at least one of the system bandwidth, the narrowband where the first frequency resource is located, or the type of the second frequency resource. The types of the second frequency resources include PUSCH frequency resources and PDSCH frequency resources.

Case 2: The first offset direction is the direction in which the PRB number decreases. Alternatively, the first offset direction is the direction in which the PRB number increases. Or, when the first frequency resource is located on the side where the PRB number of the center frequency point of the system bandwidth decreases, the first offset direction is the direction in which the PRB number decreases, and when the first frequency resource is located at the center frequency point of the system bandwidth PRB number When the number increases, the first offset direction is the direction in which the PRB number increases. Or, when the first frequency resource is located on the side where the PRB number of the system bandwidth center frequency point decreases, the first offset direction is the direction in which the PRB number increases, and when the first frequency resource is located at the system bandwidth center frequency point PRB number In the case of the increasing side, the first offset direction is the direction in which the PRB number decreases.

In this embodiment of the present application, the first offset corresponds to at least one of the system bandwidth, the narrowband where the first frequency resource is located, and the type of the second frequency resource. The types of the second frequency resources include PUSCH frequency resources and PDSCH frequency resources.

In the embodiments of the present application, the above implementation process is described below with specific examples.

Example one:

It is assumed that the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication method in the first case above, and the first offset direction is the direction in which the PRB number decreases. An offset corresponds to the system bandwidth.

In this application, the corresponding relationship between the first offset and the system bandwidth is not limited. For example, it is assumed that in Example 1, the corresponding relationship between the first offset and the system bandwidth is, optionally, when the system bandwidth is one or more of 3MHz, 5MHz, 10MHz, and 15MHz, the corresponding first offset The value is 1 PRB. Optionally, when the system bandwidth is 20 MHz, the corresponding first offset value is 2 PRBs.

Assuming that the system bandwidth used by the network device to communicate with the terminal device in Example 1 is 20MHz, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit value mapped in the second field is the first value , the first frequency resource is determined as the second frequency resource, and when the bit value mapped in the second field is the second value, the second frequency resource is obtained by offsetting the first frequency resource by 2 PRBs in the direction of decreasing PRB number.

Example two:

Assuming that the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication method in the first case above, and that the first offset direction is the direction in which the PRB number increases, the first An offset corresponds to the system bandwidth. Assuming that the corresponding relationship between the first offset and the system bandwidth in Example 2 is, optionally, when the system bandwidth is one or more of 3MHz, 5MHz, and 15MHz, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is one or more of 10 MHz and 20 MHz, the corresponding first offset value is 2 PRBs.

Assuming that the system bandwidth used for communication between the network device and the terminal device in Example 2 is 5MHz, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit value mapped in the second field is the first value , the first frequency resource is determined as the second frequency resource, and when the bit value mapped in the second field takes the second value, the second frequency resource is obtained by offsetting the first frequency resource by 1 PRB in the direction of increasing the PRB number.

Example three:

It is assumed that the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication method in the first case above, and the first offset direction is the direction in which the PRB number decreases. An offset has a corresponding relationship with the system bandwidth and the narrowband where the first frequency resource is located.

In this application, the correspondence between the first offset and the system bandwidth and the existence of the narrowband where the first frequency resource is located is not limited. For example, it is assumed that in Example 3, the corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is, optionally, when the system bandwidth is 3MHz, and the narrowband index is 0 for the first frequency resource, the corresponding first offset value is 1 PRB; when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband whose narrowband index is 1, the corresponding first offset value is 0 or 2 PRBs. Optionally, when the system bandwidth is 5MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0 and 1, the corresponding first offset takes a value of 0 or 2 PRBs; when the system The bandwidth is 5MHz, and for the first frequency resource in at least one of the narrowbands whose narrowband indices are 2 and 3, the corresponding first offset takes a value of 1 PRB. Optionally, when the system bandwidth is 10MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0, 1, 2, 3, 4, 5, 6, and 7, the corresponding first offset The value is 1 PRB. Optionally, when the system bandwidth is 15MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0, 1, 2, 3, 4, and 5, the corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 6, 7, 8, 9, 10, and 11, the corresponding first offset value is 2 PRBs. Optionally, when the system bandwidth is 20MHz, and the narrowband index is at least one of the narrowbands of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15 For the first frequency resource in the narrowband, the corresponding first offset value is 2 PRBs.

Assuming that the system bandwidth used for communication between the network device and the terminal device in Example 3 is 3MHz, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit value mapped in the second field is the first value , the first frequency resource is determined as the second frequency resource, and when the bit value mapped in the second field is the second value, if the narrowband index where the first frequency resource is located is 0, the first frequency resource is reduced to the PRB number The second frequency resource is obtained by offsetting the first frequency resource by 1 PRB in the direction of . When the value of the first offset is 0, the terminal device offsets the first frequency resource by 0 PRBs in the direction in which the PRB number decreases to obtain the second frequency resource, that is, the terminal device determines the first frequency resource as the second frequency resource. frequency resource.

As shown in FIG. 7 , for different system bandwidths and first frequency resources in different narrowbands, when the bits mapped in the second field take the first value or the second value, the first frequency resource is shifted after the schematic diagram.

Example four:

Assuming that the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication method in the first case above, and that the first offset direction is the direction in which the PRB number increases, the first An offset has a corresponding relationship with the system bandwidth and the narrowband where the first frequency resource is located.

In this application, the correspondence between the first offset and the system bandwidth and the existence of the narrowband where the first frequency resource is located is not limited. For example, it is assumed that in Example 4, the corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is, optionally, when the system bandwidth is 3MHz, and the narrowband index is 0 for the first narrowband in the narrowband frequency resource, the corresponding first offset value is 1 PRB; when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband whose narrowband index is 1, the corresponding first offset value is 0 or 1 PRB. Optionally, when the system bandwidth is 5MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0 and 1, the corresponding first offset takes a value of 0 or 2 PRBs; when the system The bandwidth is 5MHz, and for the first frequency resource in at least one of the narrowbands whose narrowband indices are 2 and 3, the corresponding first offset takes a value of 1 PRB. Optionally, when the system bandwidth is 10MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0, 1, 2, 3, 4, 5, and 6, the corresponding first offset is taken as the first frequency resource. The value is 2 PRBs; when the system bandwidth is 10 MHz, and for the first frequency resource in the narrowband whose narrowband index is 7, the corresponding first offset value is 1 or 2 PRBs. Optionally, when the system bandwidth is 15MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0, 1, 2, 3, 4, and 5, the corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 6, 7, 8, 9, and 10, the corresponding first offset value is 2 PRB; when the system bandwidth is 15MHz, and for the first frequency resource in the narrowband whose narrowband index is 11, the corresponding first offset takes a value of 1 or 2 PRBs. Optionally, when the system bandwidth is 20MHz, and the narrowband indices are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15 in the narrowband For the first frequency resource in at least one narrowband, the corresponding first offset takes a value of 2 PRBs.

Assuming that the system bandwidth used for communication between the network device and the terminal device in Example 4 is 20MHz, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit value mapped in the second field is the first value , the first frequency resource is determined as the second frequency resource, and when the bit value mapped in the second field is the second value, if the narrowband index where the first frequency resource is located is 12, the first frequency resource is increased to the PRB number The second frequency resource is obtained by offsetting the direction of 2 PRBs. When the first offset value is 0, the terminal device offsets the first frequency resource by 0 PRBs in the direction of increasing PRB number to obtain the second frequency resource, that is, the terminal device determines the first frequency resource as the second frequency resource. frequency resource.

As shown in FIG. 8 , for different system bandwidths and first frequency resources in different narrowbands, when the bits mapped in the second field take the first value or the second value, the first frequency resource is shifted after the schematic diagram.

In this application, the first offsets in the above examples 1 to 4 may also have a corresponding relationship with the type of the second frequency resource. Optionally, the first offsets in the above examples 1 to 4 also have a corresponding relationship with the PDSCH frequency resources, that is, when the type of the second frequency resource is PDSCH frequency resources, the network device can use the methods of the first to fourth examples as: The terminal equipment allocates frequency resources for receiving downlink data.

In the embodiment of the present application, by using the above resource allocation method, the first frequency resource can be aligned with the boundary of the RBG in the system bandwidth after the offset. When the network device allocates PDSCH frequency resources to the terminal device in one subframe, it can avoid resource fragmentation caused by the division of the remaining resources. Further, the remaining resources can be maximized to be used by the traditional terminal equipment, thereby ensuring the maximum throughput of the traditional terminal equipment. Moreover, in this application, the terminal equipment is instructed to determine the second frequency resource through the first field and the second field, and the resource allocation method of the first field can reuse the existing DCI formats 6-0A, 6-0B, 6-1A, Or how the bits in 6-1B are allocated to resources. The embodiment of the present application may be applied to the frequency resource indicated by the first field being a resource in one narrowband, or may be applied to the frequency resource indicated by the first field being the resource in multiple narrowbands.

Example five:

It is assumed that the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication method in the above-mentioned first case, and it is assumed that the PRB number decreases when the first frequency resource is located at the center frequency of the system bandwidth. In the case of the smaller side, the first offset direction is the direction in which the PRB number decreases, and when the first frequency resource is located on the side of the system bandwidth center frequency point where the PRB number increases, the first offset direction is The direction in which the PRB number increases, and it is assumed that the first offset has a corresponding relationship with the system bandwidth and the narrowband where the first frequency resource is located.

In this application, the correspondence between the first offset and the system bandwidth and the existence of the narrowband where the first frequency resource is located is not limited. For example, it is assumed that in Example 5, the corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is: Frequency resource, the corresponding first offset value is 1 PRB; when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband whose narrowband index is 1, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is 5MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0 and 1, the corresponding first offset takes a value of 0 or 2 PRBs; when the system The bandwidth is 5MHz, and for the first frequency resource in at least one of the narrowbands whose narrowband indices are 2 and 3, the corresponding first offset takes a value of 1 PRB. Optionally, for the system bandwidths of 10 MHz and 15 MHz, there may be two corresponding relationships in this example. For the system bandwidth of 10MHz, the following two options are available: when the system bandwidth is 10MHz, and for the first frequency resource in at least one of the narrowbands whose narrowband indices are 0, 1, 2, and 3, the corresponding first frequency resource The offset value is 1 PRB; when the system bandwidth is 10MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices 4, 5, 6, and 7, the corresponding first offset value is Value is 1 or 2 PRBs. Or, when the system bandwidth is 10MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0, 1, 2, and 3, the corresponding first offset value is 1 PRB; when the system The bandwidth is 10MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices 4, 5, and 6, the corresponding first offset value is 2 PRBs; when the system bandwidth is 10MHz, and for For the first frequency resource in the narrowband whose narrowband index is 7, the corresponding first offset value is 1 or 2 PRBs. For the system bandwidth of 15MHz, the following two correspondences can be selected: when the system bandwidth is 15MHz, and the first frequency in at least one of the narrowbands whose narrowband indices are 0, 1, 2, 3, 4, and 5 resource, the corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and the narrowband indices are 6, 7, 8, 9, 10, and 11, the first frequency in at least one narrowband resource, and the corresponding first offset is 1 or 2 PRBs. Or, when the system bandwidth is 15MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0, 1, 2, 3, 4, and 5, the corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 6, 7, 8, 9, and 10, the corresponding first offset value is 2 PRBs; When the system bandwidth is 15MHz, and for the first frequency resource in the narrowband whose narrowband index is 11, the corresponding first offset value is 1 or 2 PRBs. Optionally, when the system bandwidth is 20MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 0, 1, 2, 3, 4, 5, 6, and 7, the corresponding first offset The value is 2 PRBs; when the system bandwidth is 20MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 8, 9, 10, 11, 12, 13, 14, and 15, the corresponding The value of the first offset is 2 PRBs.

Assuming that in Example 5, the system bandwidth used for communication between the network device and the terminal device is 20MHz, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit value mapped in the second field is the first value , the first frequency resource is determined as the second frequency resource, and when the bit value mapped in the second field is the second value, if the narrowband index where the first frequency resource is located is 12, the first frequency resource is increased to the PRB number The second frequency resource is obtained by offsetting the direction of 2 PRBs. When the value of the first offset is 0, the terminal device offsets the first frequency resource by 0 PRBs in the direction of increasing or decreasing the PRB number to obtain the second frequency resource, that is, the terminal device determines the first frequency resource. is the second frequency resource.

As shown in FIG. 9 , for different system bandwidths and first frequency resources in different narrowbands, when the bits mapped in the second field take the first value or the second value, the first frequency resource is shifted after the schematic diagram.

In this application, the first offset in the fifth example may also have a corresponding relationship with the type of the second frequency resource. Optionally, the first offset in the fifth example above also has a corresponding relationship with the PUSCH frequency resource, that is, when the type of the second frequency resource is the PUSCH frequency resource, the network device can use the method in the fifth example to allocate it to the terminal device. Frequency resource for sending uplink data.

For the resource allocation method in the fifth example, in a possible implementation manner, for a system bandwidth of 10 MHz, for the first frequency resource in at least one narrowband of narrowbands with narrowband indices 4, 5, 6, and 7, if If the first frequency resource is a PDSCH frequency resource, the corresponding first offset value is 2 PRBs, and if the first frequency resource is a PUSCH frequency resource, the corresponding first offset value is 1 PRB.

For the resource allocation method in the fifth example, in a possible implementation manner, for the system bandwidth of 10 MHz, for the first frequency resource in the narrowband with the narrowband index of 7, if the first frequency resource is the PDSCH frequency resource, the corresponding The value of the first offset is 2 PRBs, and if the first frequency resource is a PUSCH frequency resource, the corresponding first offset is 1 PRB.

With regard to the resource allocation method in the fifth example, in a possible implementation manner, for a system bandwidth of 15 MHz, for at least one narrowband with narrowband indices of 6, 7, 8, 9, 10, and 11, the first one in the narrowband Frequency resource, if the first frequency resource is a PDSCH frequency resource, the corresponding first offset value is 2 PRBs; if the first frequency resource is a PUSCH frequency resource, the corresponding first offset value is 1 PRBs.

Regarding the resource allocation method in the fifth example, in a possible implementation manner, for the system bandwidth of 15 MHz, for the first frequency resource in the narrowband with the narrowband index of 11, if the first frequency resource is the PDSCH frequency resource, the corresponding The value of the first offset is 2 PRBs, and if the first frequency resource is a PUSCH frequency resource, the corresponding first offset is 1 PRB.

Example six:

It is assumed that the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication method in the above-mentioned first case, and it is assumed that the PRB number decreases when the first frequency resource is located at the center frequency of the system bandwidth. In the case of the smaller side, the first offset direction is the direction in which the PRB number increases, and when the first frequency resource is located on the side of the system bandwidth center frequency point where the PRB number increases, the first offset direction is the PRB number. The direction in which the number decreases, and it is assumed that the first offset has a corresponding relationship with the system bandwidth and the narrowband where the first frequency resource is located.

In this application, the correspondence between the first offset and the system bandwidth and the existence of the narrowband where the first frequency resource is located is not limited. The following description will be given by taking an example in which the number of PRBs included in the frequency range of the system bandwidth is an odd number. For example, it is assumed that in Example 6, the corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is, optionally, when the system bandwidth is 3MHz, for the first frequency in the narrowband whose narrowband index is 0 resource, the corresponding first offset value is 1 PRB; when the system bandwidth is 3MHz, for the first frequency resource in the narrowband whose narrowband index is 1, the corresponding first offset value is 0 or 2 PRB. Optionally, when the system bandwidth is 5MHz, for the first frequency resource in at least one of the narrowbands whose narrowband indices are 0 and 1, the corresponding first offset takes a value of 0 or 2 PRBs; when the system bandwidth is is 5MHz, and for the first frequency resource in at least one of the narrowbands whose narrowband indices are 2 and 3, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is 15MHz, for the first frequency resource in at least one of the narrowbands whose narrowband indices are 0, 1, 2, 3, 4, and 5, the corresponding first offset takes a value of 1. PRBs; when the system bandwidth is 15MHz, and for the first frequency resource in at least one of the narrowbands with narrowband indices of 6, 7, 8, 9, 10, and 11, the corresponding first offset value is 0 or 2 PRBs. When the value of the first offset is 0, the terminal device offsets the first frequency resource by 0 PRBs in the direction of increasing or decreasing the PRB number to obtain the second frequency resource, that is, the terminal device determines the first frequency resource. is the second frequency resource.

In this embodiment of the present application, the network device may re-determine the second frequency resource for sending uplink data or receiving downlink data for the terminal device, and determine the offset state between the second frequency resource and the first frequency resource, and then use the The second field in a DCI indicates the offset state between the second frequency resource and the first frequency resource, and the terminal device offsets the first frequency resource according to the offset state indicated by the second field, and obtains a value for sending uplink data. Or receive the second frequency resource of downlink data.

In the second case, the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, including:

When the bit value mapped in the second field is the first value, the second field indicates that the second frequency domain resource is offset relative to the first frequency domain resource in a direction in which the PRB number decreases. When the bit value mapped in the second field is the second value, the second field indicates that the second frequency domain resource is offset relative to the first frequency domain resource in a direction in which the PRB number increases. For example, assuming that the number of bits mapped in the second field is 1, the value of 1 bit mapped in the second field can be set to 0 to indicate that the second frequency domain resources are offset relative to the first frequency domain resources in the direction in which the PRB number decreases. , the value of 1 bit mapped in the second field is 1 to indicate that the second frequency domain resource is offset in the direction in which the PRB number increases relative to the first frequency domain resource; of course, the value of 1 bit mapped by the second field can also be 1 Indicates that the second frequency domain resource is offset in the direction of decreasing PRB number relative to the first frequency domain resource, and the value of 1 bit mapped in the second field is 0 to indicate that the second frequency domain resource is relative to the first frequency domain resource. The PRB number is increased in the direction The present application does not limit the value of the bits mapped in the second field to indicate the offset state between the second frequency resource and the first frequency resource.

In this implementation manner, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit mapped in the second field takes a value of the first value, reducing the first frequency resource to the number of PRBs. The direction is shifted by the second offset to obtain the second frequency resource, and when the bit value mapped in the second field takes the second value, the first frequency resource is shifted in the direction of increasing the PRB number by the third offset to obtain the second frequency resource. frequency resource.

In this embodiment of the present application, the second offset may be a preset value, or may be a value configured through high-layer signaling. The third offset may be a preset value or a value configured through high-layer signaling, which is not limited in this application for comparison. For example, in the present application, when the second frequency domain resource is offset relative to the first frequency domain resource in the direction of decreasing PRB number, the terminal device can offset the first frequency resource according to the preset second offset. The second frequency resource can also be obtained by offsetting the first frequency resource according to the second offset configured by the network device through high layer signaling to obtain the second frequency resource.

In this embodiment of the present application, before sending the first DCI to the terminal device, the network device may send the first signaling to the terminal device, and the terminal device receives the first signaling sent by the network device, where the first signaling is high-level signaling. The first signaling includes first information, and the first information is used to indicate that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource. The network device may indicate that the first DCI includes a second field for indicating an offset state of the second frequency resource relative to the first frequency resource by sending high-layer signaling to the terminal device. For example, the terminal device may be instructed to receive the first DCI through higher layer signaling, and of course, the terminal device may also be instructed through higher layer signaling to receive the DCI that does not include the second field. For another example, the second frequency resource may be indicated by high layer signaling to be offset relative to the first frequency resource, and of course, the second frequency resource may be indicated by high layer signaling that is not offset relative to the first frequency resource. For another example, the terminal equipment may be instructed to perform resource offset through high layer signaling, and of course, the terminal equipment may be instructed not to perform resource offset through high layer signaling. Specifically, when the high-layer signaling indicates that the second frequency resource is not offset relative to the first frequency resource, or when the high-layer signaling instructs the terminal device not to perform resource offset, the terminal device may not parse the first frequency resource in the first DCI. Two fields, or the terminal device receives DCI that does not include the second field. Specifically, when the second frequency resource is instructed to offset relative to the first frequency resource through high layer signaling, or when the terminal device is instructed to perform resource offset through high layer signaling, the terminal device receives the first DCI.

It can be understood that the high-layer signaling is not limited in this application, for example, it may be RRC signaling.

In the embodiment of the present application, the second offset and the third offset have a corresponding relationship with at least one of the system bandwidth, the narrowband where the first frequency resource is located, and the type of the second frequency resource. The types of the second frequency resources include PUSCH frequency resources and PDSCH frequency resources.

In the embodiments of the present application, the above implementation process is described below with specific examples.

Example seven:

It is assumed that the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication method in the second case above, and it is assumed that the second offset and the third offset are related to the system bandwidth There is a corresponding relationship.

In this application, the corresponding relationship between the second offset and the third offset and the system bandwidth is not limited. For example, it is assumed that the corresponding relationship between the second offset and the third offset and the system bandwidth in Example 7 is, optionally, when the system bandwidth is one or more of 3MHz, 5MHz, 10MHz, and 15MHz, The corresponding second offset value is 1 PRB, and the corresponding third offset value is 1 PRB. Optionally, when the system bandwidth is 20 MHz, the corresponding second offset value is 2 PRBs, and the corresponding third offset value is 2 PRBs.

Assuming that the system bandwidth used for communication between the network device and the terminal device in Example 7 is 20MHz, the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit value mapped in the second field is the first value , offset the first frequency resource by 2 PRBs in the direction of decreasing PRB number, and when the bit mapped in the second field takes the second value, offset the first frequency resource by 2 PRB in the direction of increasing PRB number .

Example eight:

It is assumed that the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication method in the second case above, and it is assumed that the second offset and the third offset are related to the system bandwidth There is a corresponding relationship with the narrowband where the first frequency resource is located.

In this application, the correspondence between the second offset and the third offset and the system bandwidth and the existence of the narrowband where the first frequency resource is located is not limited. For example, suppose that in Example 8, the corresponding relationship between the second offset and the third offset and the system bandwidth and the narrowband where the first frequency resource is located is, optionally, when the system bandwidth is 3MHz, for the narrowband index of 0 For the first frequency resource in the narrowband, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 1 PRB; when the system bandwidth is 3MHz, for the narrowband index of 1 in the narrowband For the first frequency resource, the corresponding second offset value is 2 PRBs, and the corresponding third offset value is 1 PRB. Optionally, when the system bandwidth is 5MHz, for the first frequency resource in at least one of the narrowbands with narrowband indices of 0 and 1, the corresponding second offset is 2 PRBs, and the corresponding third offset is 2 PRBs. The offset value is 2 PRBs; when the system bandwidth is 5MHz, for the first frequency resource in at least one of the narrowbands with narrowband indices 2 and 3, the corresponding second offset value is 1 PRB, The corresponding third offset takes a value of 1 PRB. Optionally, for the system bandwidths of 10 MHz and 15 MHz, there may be two corresponding relationships in this example. For the system bandwidth of 10MHz, the following two options are available: when the system bandwidth is 10MHz, for at least one of the narrowbands with narrowband indices of 0, 1, 2, 3, 4, 5, 6, and 7, the first For frequency resources, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 2 PRBs. Or, when the system bandwidth is 10MHz, for the first frequency resource in at least one of the narrowbands whose narrowband indices are 0, 1, 2, 3, 4, 5, and 6, the corresponding second offset value is 1 The corresponding third offset value is 2 PRBs; when the system bandwidth is 10MHz, for the first frequency resource in the narrowband whose narrowband index is 7, the corresponding second offset value is 1 PRB , and the corresponding third offset value is 1 PRB. For the system bandwidth of 15MHz, the following two correspondences can be selected: when the system bandwidth is 15MHz, for the first frequency resource in at least one of the narrowbands whose narrowband indices are 0, 1, 2, 3, 4, and 5 , the corresponding second offset value is 1 PRB, and the corresponding third offset value is 1 PRB; when the system bandwidth is 15MHz, the narrowband indices are 6, 7, 8, 9, 10, 11 For the first frequency resource in at least one narrowband of the narrowbands, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 2 PRBs. Or, when the system bandwidth is 15MHz, for the first frequency resource in at least one of the narrowbands with narrowband indices of 0, 1, 2, 3, 4, and 5, the corresponding second offset value is 1 PRB , the corresponding third offset is 1 PRB; for the first frequency resource in at least one of the narrowbands with narrowband indices 6, 7, 8, 9, and 10, the corresponding second offset is The value is 2 PRBs, and the corresponding third offset value is 2 PRBs; for the first frequency resource in the narrowband whose narrowband index is 11, the corresponding second offset value is 2 PRBs, and the corresponding The value of the third offset is 1 PRB. Optionally, when the system bandwidth is 20MHz, for the first frequency resource in at least one of the narrowbands with narrowband indices of 8, 9, 10, 11, 12, 13, 14, and 15, the corresponding second offset The value is 2 PRBs, and the corresponding third offset is 2 PRBs.

It should be noted that in the second case where the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, the second field indicates that the second frequency domain resource is relative to the first frequency domain resource to the PRB The offset in the direction of decreasing number, or the method of indicating the offset of the second frequency domain resource in the direction of increasing PRB number relative to the first frequency domain resource, may be directed to resources in a part of the narrowband in the system bandwidth. For example, when the system bandwidth is 3MHz, it can only be applied to the first frequency resource in the narrowband with index 0; when the system bandwidth is 5MHz, it can only be applied to the narrowband with indexes 2, 3 or 1, 2, and 3 The first frequency resource in .

Assuming that in Example 8, the system bandwidth used for communication between the network device and the terminal device is 5MHz, the terminal device determines the second frequency resource according to the first field and the second field, including: if the narrowband index where the first frequency resource is located is 1, the first frequency resource is 1. When the bit value of the two-field mapping is the first value, the first frequency resource is shifted by 2 PRBs in the direction of decreasing the PRB number. When the bit value of the second field mapping is the second value, the first frequency resource is The resources are shifted by 2 PRBs in the direction of increasing PRB numbers. When the second offset or the third offset takes a value of 0, the terminal device offsets the first frequency resource by 0 PRBs to obtain the second frequency resource, that is, the terminal device determines the first frequency resource as the second frequency resource.

As shown in FIG. 10 , for different system bandwidths and first frequency resources in different narrowbands, when the bits mapped in the second field take the first value or the second value, the first frequency resource is shifted after the schematic diagram.

In the embodiments of the present application, the same resource allocation method can be used for different system bandwidths, and of course, different methods in the above-mentioned example 1 to example 8 can be respectively used. For example, for system bandwidths of 3MHz, 5MHz, and 15MHz, example 5 or In Example 6, Example 7 or Example 8 can be used for system bandwidths of 10MHz and 20MHz.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various nodes. It can be understood that, in order to realize the above-mentioned functions, the network device and the terminal device include corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or in the form of a combination of hardware and computer software, in conjunction with the algorithm steps of the examples described in the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, the network device and the terminal device can be divided into functional modules according to the foregoing method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

In the case of using an integrated unit, FIG. 11 shows a possible exemplary block diagram of a network device involved in the embodiment of the present invention. In FIG. 11 , the network device 1100 includes: a processing unit 1102 and a communication unit 1103 . The processing unit 1102 is used to control and manage the actions of the network device 1100 . The communication unit 1103 is used to support the communication between the network device 1100 and other network entities (eg, terminals). The network device 1100 may further include a storage unit 1101 for storing program codes and data of the network device 1100 .

The processing unit 1102 may be a processor or a controller, for example, may be a general-purpose central processing unit (CPU), general-purpose processor, digital signal processing (digital signal processing, DSP), application specific integrated circuits (application specific integrated circuits) , ASIC), field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure. The processing unit 1102 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 1103 may be a communication interface, a transceiver or a transceiver circuit, etc., where the communication interface is a general term, and in a specific implementation, the communication interface may include multiple interfaces, for example, may include: an interface between a network device and a terminal device , an interface between a network device and other network elements, and/or other interfaces. The storage unit 1101 may be a memory.

When the processing unit 1102 is a processor, the communication unit 1103 is a communication interface, and the storage unit 1101 is a memory, the network device 1100 involved in this embodiment of the present invention may be the network device 1200 shown in FIG. 12 .

Referring to FIG. 12 , the network device 1200 includes: at least one processor 1201 . In this embodiment of the present application, the processor 1201 is configured to control and manage the actions of the network device 1200. For example, the processor 1201 is configured to support the network device 1200 to determine the first frequency resource, the second frequency resource, and the first frequency resource in the embodiment. The relevant steps of a DCI, etc. Optionally, the network device 1200 may further include a memory 1202 and a communication interface 1203 . The processor 1201 , the communication interface 1203 , and the memory 1202 may be connected to each other or to each other through a bus 1204 . Wherein, the memory 1202 is used for storing codes and data of the network device 1200 . The communication interface 1203 is used to support the network device 1200 to communicate.

The following describes the components of the network device 1200 in detail:

The processor 1201 is the control center of the network device 1200, and may be a processor or a general term for multiple processing elements. For example, the processor 1201 is a central processing unit (central processing unit, CPU), may also be a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or is configured to implement one or more integrated circuits of the embodiments of the present invention , for example: one or more microprocessors (digital signal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA).

The processor 1201 can execute various functions of the network device 1200 by running or executing software programs stored in the memory 1202 and calling data stored in the memory 1202 .

Memory 1202 may be read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (RAM), or other type of static storage device that can store information and instructions The dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a CompactDisc Read-Only Memory (CD-ROM) or other optical disk storage, optical disk storage ( including compact discs, laser discs, compact discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being stored by a computer any other medium taken, but not limited to this. The memory 1202 can exist independently and is connected to the processor 1201 through the communication bus 1204 . The memory 1202 may also be integrated with the processor 1201.

The communication interface 1203, using any device such as a transceiver, is used for communication with other nodes in the systems shown in FIG. 5 and FIG. 6, such as other terminals and the like. It can also be used to communicate with communication networks, such as Ethernet, radio access network (RAN), wireless local area network (Wireless Local Area Networks, WLAN). The communication interface 1203 may include a receiving unit to implement a receiving function, and a transmitting unit to implement a transmitting function.

The communication bus 1204 may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external network device interconnection (Peripheral Component, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus or the like. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is shown in FIG. 12, but it does not mean that there is only one bus or one type of bus.

The device structure shown in FIG. 12 does not constitute a limitation on the network device, and may include more or less components than shown, or combine some components, or arrange different components.

In the case of using an integrated unit, FIG. 13 shows a possible exemplary block diagram of a terminal device involved in the embodiment of the present invention. In FIG. 13 , the terminal device 1300 includes: a processing unit 1302 and a communication unit 1303 . The processing unit 1302 is used to control and manage the actions of the terminal device 1300 . The communication unit 1303 is used to support the communication between the terminal device 1300 and other network entities (eg, terminals). The terminal device 1300 may further include a storage unit 1301 for storing program codes and data of the terminal device 1300 .

The processing unit 1302 may be a processor or a controller, for example, may be a general-purpose central processing unit (CPU), general-purpose processor, digital signal processing (DSP), application specific integrated circuits (application specific integrated circuits) , ASIC), field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure. The processing unit 1302 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 1303 may be a communication interface, a transceiver or a transceiver circuit, etc., where the communication interface is a general term, and in a specific implementation, the communication interface may include multiple interfaces, for example, may include: an interface between a terminal device and a terminal device , the interface between the terminal equipment and other network elements, and/or other interfaces. The storage unit 1301 may be a memory.

When the processing unit 1302 is a processor, the communication unit 1303 is a communication interface, and the storage unit 1301 is a memory, the terminal device 1300 involved in the embodiment of the present invention may be the terminal device 1400 shown in FIG. 14 .

Referring to FIG. 14 , the terminal device 1400 includes: at least one processor 1401 . In this embodiment of the present application, the processor 1401 is configured to control and manage the actions of the terminal device 1400. For example, the processor 1401 is configured to support the terminal device 1400 in the embodiment according to the first field and the first field indicated in the first DCI. The second field determines the relevant steps of the second frequency resource, etc. Optionally, the terminal device 1400 may further include a memory 1402 and a communication interface 1403 . The processor 1401 , the communication interface 1403 , and the memory 1402 may be connected to each other or to each other through a bus 1404 . Among them, the memory 1402 is used to store codes and data of the terminal device. The communication interface 1403 is used to support the terminal device 1400 to communicate.

Each component of the terminal device 1400 is introduced in detail below:

The processor 1401 is the control center of the terminal device 1400, and may be a processor or a general term for multiple processing elements. For example, the processor 1401 is a central processing unit (central processing unit, CPU), may also be a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or is configured to implement one or more integrated circuits of the embodiments of the present invention , for example: one or more microprocessors (digital signal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA).

The processor 1401 can execute various functions of the terminal device 1400 by running or executing software programs stored in the memory 1402 and calling data stored in the memory 1402 .

Memory 1402 may be read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (RAM), or other type of static storage device that can store information and instructions The dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a CompactDisc Read-Only Memory (CD-ROM) or other optical disk storage, optical disk storage ( including compact discs, laser discs, compact discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being stored by a computer any other medium taken, but not limited to this. The memory 1402 can exist independently and is connected to the processor 1401 through the communication bus 1404 . The memory 1402 may also be integrated with the processor 1401.

The communication interface 1403, using any device such as a transceiver, is used for communication with other nodes in the systems shown in FIG. 5 and FIG. 6, such as other network devices. It can also be used to communicate with communication networks, such as Ethernet, radio access network (RAN), wireless local area network (Wireless Local Area Networks, WLAN). The communication interface 1203 may include a receiving unit to implement a receiving function, and a transmitting unit to implement a transmitting function.

The communication bus 1404 may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external terminal device interconnect (Peripheral Component, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, or the like. The bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is shown in FIG. 14, but it does not mean that there is only one bus or one type of bus.

The device structure shown in FIG. 14 does not constitute a limitation to the terminal device, and may include more or less components than shown, or combine some components, or arrange different components.

Based on the same concept as the above method embodiments, the embodiments of the present application further provide a computer storage medium, where the computer storage medium stores computer-executable instructions, and when the computer-executable instructions are called by a computer, the computer The data transmission method provided by the first aspect or any one of the designs of the first aspect is executed. In the embodiment of the present application, the computer-readable storage medium is not limited, for example, it may be RAM (random-access memory, random access memory), ROM (read-only memory, read-only memory), and the like.

Based on the same concept as the above method embodiments, the embodiments of the present application further provide a computer program product, where instructions are stored in the computer program product, and when the computer program product is run on a computer, the computer can execute the above-mentioned first aspect or the above-mentioned first aspect. A data transfer method provided in any one of the possible designs on the one hand.

Embodiments of the present application further provide a communication apparatus (eg, an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above method. An apparatus implementing the power tracker and/or powered generator described herein may be a self-contained device or may be part of a larger device. A device may be (i) a self-contained IC; (ii) a collection of one or more ICs, which may include a memory IC for storing data and/or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter (iv) ASICs, such as mobile station modems; (v) modules that may be embedded within other devices; (vi) receivers, cellular phones, wireless devices, handsets, or mobile units; (vii) others, etc. Wait.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), and the like.

The various illustrative logic units and circuits described in the embodiments of this application may be implemented by general purpose processors, digital signal processors, application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, Discrete gate or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions. A general-purpose processor may be a microprocessor, or alternatively, the general-purpose processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other similar configuration. accomplish.

The steps of the method or algorithm described in the embodiments of this application may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two. A software unit may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. Illustratively, a storage medium may be coupled to the processor such that the processor may read information from, and store information in, the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and storage medium may be provided in the ASIC, and the ASIC may be provided in the terminal device. Alternatively, the processor and the storage medium may also be provided in different components in the terminal device.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Although the invention has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the invention. Accordingly, this specification and drawings are merely illustrative of the invention as defined by the appended claims, and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (66)

1. A data transmission method is applied to network equipment and is characterized by comprising the following steps:

transmitting first Downlink Control Information (DCI) to a terminal device, wherein the first DCI comprises a first field and a second field, the first field is used for indicating a first frequency resource, and the second field is used for indicating an offset state between a second frequency resource and the first frequency resource;

receiving uplink data sent by the terminal device on the second frequency resource, or sending downlink data to the terminal device on the second frequency resource;

the second field is used for indicating an offset state between a second frequency resource and the first frequency resource and comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource deviates towards the direction of PRB number reduction relative to the first frequency resource;

when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource deviates towards the direction of PRB number increase relative to the first frequency resource;

before the sending the first DCI to the terminal device, the method further includes:

sending a first signaling to the terminal equipment, wherein the first signaling is a high-level signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

2. The method of claim 1, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

3. The method of claim 2, wherein the bits mapped by the second field take on the first value if the second frequency resource is a resource within a narrowband; and/or the presence of a gas in the gas,

and under the condition that the second frequency resources are not all resources in one narrow band, the value of the bit mapped by the second field is the second value.

4. The method of any of claims 1-3, wherein the number of bits of the second field map is 1.

5. A data transmission method is applied to network equipment and is characterized by comprising the following steps:

under the condition that the coverage enhancement mode of the terminal equipment is determined to be a coverage enhancement mode B, sending first Downlink Control Information (DCI) to the terminal equipment, wherein the first DCI comprises a first field and a second field, the first field is used for indicating a first frequency resource, and the second field is used for indicating an offset state between a second frequency resource and the first frequency resource;

receiving uplink data sent by the terminal equipment on the second frequency resource; or, sending downlink data to the terminal device on the second frequency resource;

and/or sending second Downlink Control Information (DCI) to the terminal equipment under the condition that the coverage enhancement mode of the terminal equipment is determined to be a coverage enhancement mode A, wherein the second DCI comprises a third field, the third field is used for indicating a third frequency resource, the third frequency resource comprises N continuous Physical Resource Blocks (PRBs) in a system bandwidth, and N is one of 1, 2, 3, 4, 5 and 6;

receiving uplink data sent by the terminal equipment on the third frequency resource; or, sending downlink data to the terminal device on the third frequency resource;

wherein a format of the first DCI is different from a format of the second DCI.

6. The method of claim 5, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

7. The method of claim 6, wherein the bits mapped by the second field take on the first value if the second frequency resource is a resource within a narrowband; and/or the presence of a gas in the gas,

and under the condition that the second frequency resources are not all resources in one narrow band, the value of the bit mapped by the second field is the second value.

8. The method of claim 5, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource deviates towards the direction of PRB number reduction relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is shifted towards the direction of increasing the PRB number relative to the first frequency resource.

9. The method of claim 8, wherein prior to the sending of the first DCI to the terminal device, the method further comprises:

sending a first signaling to the terminal equipment, wherein the first signaling is a high-level signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

10. The method of any of claims 5-8, wherein the number of bits of the second field map is 1.

11. A method of data transmission, comprising:

receiving first Downlink Control Information (DCI) sent by a network device, wherein the first DCI comprises a first field and a second field, the first field is used for indicating a first frequency resource, and the second field is used for indicating an offset state between a second frequency resource and the first frequency resource;

determining the second frequency resource according to the first field and the second field;

sending uplink data to the network device on the second frequency resource, or receiving downlink data sent by the network device on the second frequency resource;

the second field is used for indicating an offset state between a second frequency resource and the first frequency resource and comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource deviates towards the direction of PRB number reduction relative to the first frequency resource;

when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource deviates towards the direction of PRB number increase relative to the first frequency resource;

before receiving the first DCI transmitted by the network device, the method further includes:

receiving a first signaling sent by network equipment, wherein the first signaling is a high-level signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

12. The method of claim 11, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

13. The method of claim 12, wherein the determining the second frequency resource from the first field and the second field comprises:

when the bit value mapped by the second field is the first value, determining the first frequency resource as the second frequency resource;

and when the bit value mapped by the second field is the second value, offsetting the first frequency resource by a first offset in a first offset direction to obtain a second frequency resource.

14. The method of claim 13, wherein the first offset direction is preset or configured through higher layer signaling; and the number of the first and second electrodes,

the first offset is a preset value, or the first offset is a value configured through a high-level signaling.

15. The method of claim 11, wherein the determining the second frequency resource from the first field and the second field comprises:

when the bit value mapped by the second field is the first value, shifting the first frequency resource by a second offset amount in the direction of PRB number reduction to obtain a second frequency resource;

and when the bit value mapped by the second field is the second value, shifting the first frequency resource by a third offset in the direction of increasing the PRB number to obtain the second frequency resource.

16. The method of claim 11 or 15, wherein prior to determining the second frequency resource from the first field and the second field, further comprising:

receiving a first signaling sent by the network equipment, wherein the first signaling is a high-level signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

17. The method of claim 15, wherein the second offset is a preset value or a value configured through higher layer signaling; and the number of the first and second electrodes,

the third offset is a preset value, or the third offset is a value configured through a high-level signaling.

18. The method of claim 13, wherein the first offset direction is a direction of PRB number reduction; or, the first offset direction is a direction in which PRB numbers increase; or,

under the condition that the first frequency resource is positioned on one side of the system bandwidth with the reduced PRB number of the central frequency point, the first offset direction is the direction of the reduced PRB number; and under the condition that the first frequency resource is positioned at one side of the system bandwidth with the increased PRB number of the central frequency point, the first offset direction is the direction of the increased PRB number; or,

under the condition that the first frequency resource is positioned on one side of the system bandwidth with the reduced PRB number of the central frequency point, the first offset direction is the direction of the increased PRB number; and under the condition that the first frequency resource is positioned on one side of the system bandwidth with the increased PRB number of the central frequency point, the first offset direction is the direction of the decreased PRB number.

19. The method of claim 13, wherein the first offset direction corresponds to at least one of a system bandwidth, a narrowband in which the first frequency resource is located, or a type of the second frequency resource;

the types of the second frequency resources comprise Physical Uplink Shared Channel (PUSCH) frequency resources and Physical Downlink Shared Channel (PDSCH) frequency resources.

20. The method according to claim 11 or 15, wherein the first offset, the second offset and the third offset respectively have a corresponding relationship with at least one of a system bandwidth, a narrowband where the first frequency resource is located and a type of the second frequency resource;

the types of the second frequency resources comprise Physical Uplink Shared Channel (PUSCH) frequency resources and Physical Downlink Shared Channel (PDSCH) frequency resources.

21. The method of any of claims 11-15 or 17-19, wherein the number of bits of the second field map is 1.

22. A method of data transmission, comprising:

receiving first Downlink Control Information (DCI) sent by a network device when a coverage enhancement mode is a coverage enhancement mode B, wherein the first DCI comprises a first field and a second field, the first field is used for indicating a first frequency resource, and the second field is used for indicating an offset state between a second frequency resource and the first frequency resource; determining the second frequency resource according to the first field and the second field; sending uplink data to the network device on the second frequency resource, or receiving downlink data sent by the network device on the second frequency resource; and/or the presence of a gas in the gas,

receiving second Downlink Control Information (DCI) sent by a network device when a coverage enhancement mode is a coverage enhancement mode A, where the second DCI includes a third field, the third field is used to indicate a third frequency resource, the third frequency resource includes N consecutive Physical Resource Blocks (PRBs) in a system bandwidth, and N is one of 1, 2, 3, 4, 5, and 6;

sending uplink data to the network device on the third frequency resource, or receiving downlink data sent by the network device on the third frequency resource;

wherein a format of the first DCI is different from a format of the second DCI.

23. The method of claim 22, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

24. The method of claim 23, wherein the determining the second frequency resource from the first field and the second field comprises:

when the bit value mapped by the second field is the first value, determining the first frequency resource as the second frequency resource;

and when the bit value mapped by the second field is the second value, offsetting the first frequency resource by a first offset in a first offset direction to obtain a second frequency resource.

25. The method of claim 24, wherein the first offset direction is preset or configured through higher layer signaling; and the number of the first and second electrodes,

the first offset is a preset value, or the first offset is a value configured through a high-level signaling.

26. The method of claim 22, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource deviates towards the direction of PRB number reduction relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is shifted towards the direction of increasing the PRB number relative to the first frequency resource.

27. The method of claim 26, wherein the determining the second frequency resource from the first field and the second field comprises:

when the bit value mapped by the second field is the first value, shifting the first frequency resource by a second offset amount in the direction of PRB number reduction to obtain a second frequency resource;

and when the bit value mapped by the second field is the second value, shifting the first frequency resource by a third offset in the direction of increasing the PRB number to obtain the second frequency resource.

28. The method of claim 26 or 27, wherein prior to determining the second frequency resource from the first field and the second field, further comprising:

receiving a first signaling sent by the network equipment, wherein the first signaling is a high-level signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

29. The method of claim 27, wherein the second offset is a preset value or a value configured through higher layer signaling; and the number of the first and second electrodes,

the third offset is a preset value, or the third offset is a value configured through a high-level signaling.

30. The method of claim 24, wherein the first offset direction is a direction of PRB number reduction; or, the first offset direction is a direction in which PRB numbers increase; or,

under the condition that the first frequency resource is positioned on one side of the system bandwidth with the reduced PRB number of the central frequency point, the first offset direction is the direction of the reduced PRB number; and under the condition that the first frequency resource is positioned at one side of the system bandwidth with the increased PRB number of the central frequency point, the first offset direction is the direction of the increased PRB number; or,

under the condition that the first frequency resource is positioned on one side of the system bandwidth with the reduced PRB number of the central frequency point, the first offset direction is the direction of the increased PRB number; and under the condition that the first frequency resource is positioned on one side of the system bandwidth with the increased PRB number of the central frequency point, the first offset direction is the direction of the decreased PRB number.

31. The method of claim 24, wherein the first offset direction corresponds to at least one of a system bandwidth, a narrowband in which the first frequency resource is located, or a type of the second frequency resource;

the types of the second frequency resources comprise Physical Uplink Shared Channel (PUSCH) frequency resources and Physical Downlink Shared Channel (PDSCH) frequency resources.

32. The method according to claim 24 or 27, wherein the first offset, the second offset and the third offset respectively have a corresponding relation with at least one of a system bandwidth, a narrowband where the first frequency resource is located and a type of the second frequency resource;

the types of the second frequency resources comprise Physical Uplink Shared Channel (PUSCH) frequency resources and Physical Downlink Shared Channel (PDSCH) frequency resources.

33. The method of any of claims 22-27 or 29-31, wherein the number of bits of the second field map is 1.

34. A network device comprising a memory, a transceiver, and a processor;

the memory stores a computer program;

the processor is used for calling the computer program stored in the memory to execute:

controlling the transceiver to transmit first Downlink Control Information (DCI) to a terminal device, wherein the first DCI comprises a first field and a second field, the first field is used for indicating a first frequency resource, and the second field is used for indicating an offset state between a second frequency resource and the first frequency resource;

controlling the transceiver to receive uplink data sent by the terminal device on the second frequency resource, or controlling the transceiver to send downlink data to the terminal device on the second frequency resource;

the second field is used for indicating an offset state between a second frequency resource and the first frequency resource and comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource deviates towards the direction of PRB number reduction relative to the first frequency resource;

when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource deviates towards the direction of PRB number increase relative to the first frequency resource;

the processor is further configured to:

before the processor controls the transceiver to send the first DCI to the terminal equipment, controlling the transceiver to send a first signaling to the terminal equipment, wherein the first signaling is a high-layer signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

35. The apparatus of claim 34, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

36. The apparatus of claim 35, wherein the bits mapped by the second field take on the first value if the second frequency resource is a resource within a narrowband; and/or the presence of a gas in the gas,

and under the condition that the second frequency resources are not all resources in one narrow band, the value of the bit mapped by the second field is the second value.

37. The apparatus of any one of claims 34-36, wherein the second field map has a number of bits of 1.

38. A network device comprising a memory, a transceiver, and a processor;

the memory stores a computer program;

the processor is used for calling the computer program stored in the memory to execute:

controlling the transceiver to transmit first Downlink Control Information (DCI) to a terminal device under the condition that a coverage enhancement mode of the terminal device is determined to be a coverage enhancement mode B, wherein the first DCI comprises a first field and a second field, the first field is used for indicating a first frequency resource, and the second field is used for indicating an offset state between a second frequency resource and the first frequency resource; and controlling the transceiver to receive uplink data sent by the terminal equipment on the second frequency resource; or, controlling the transceiver to transmit downlink data to the terminal device on the second frequency resource;

and/or, under the condition that the coverage enhancement mode of the terminal device is determined to be the coverage enhancement mode a, controlling the transceiver to send second downlink control information DCI to the terminal device, where the second DCI includes a third field, the third field is used to indicate a third frequency resource, the third frequency resource includes N consecutive physical resource blocks PRB in a system bandwidth, and N is one of 1, 2, 3, 4, 5, and 6; and controlling the transceiver to receive uplink data sent by the terminal equipment on the third frequency resource; or, controlling the transceiver to transmit downlink data to the terminal device on the third frequency resource;

wherein a format of the first DCI is different from a format of the second DCI.

39. The apparatus of claim 38, wherein the second field for indicating an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

40. The apparatus of claim 39, wherein the bits mapped by the second field take on the first value if the second frequency resource is a resource within a narrowband; and/or the presence of a gas in the gas,

and under the condition that the second frequency resources are not all resources in one narrow band, the value of the bit mapped by the second field is the second value.

41. The apparatus of claim 38, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource deviates towards the direction of PRB number reduction relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is shifted towards the direction of increasing the PRB number relative to the first frequency resource.

42. The device of claim 41, wherein the processor is further configured to:

before the processor controls the transceiver to send the first DCI to the terminal equipment, controlling the transceiver to send a first signaling to the terminal equipment, wherein the first signaling is a high-layer signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

43. The apparatus of any one of claims 38-42, wherein the second field map has a number of bits of 1.

44. A terminal device comprising a memory, a transceiver, and a processor;

the memory stores a computer program;

the transceiver is configured to receive first downlink control information DCI transmitted by a network device, where the first DCI includes a first field and a second field, the first field is used to indicate a first frequency resource, and the second field is used to indicate an offset state between a second frequency resource and the first frequency resource;

the processor is used for calling the computer program stored in the memory to execute:

determining the second frequency resource according to the first field and the second field, and controlling the transceiver to transmit uplink data to the network device on the second frequency resource, or controlling the transceiver to receive downlink data transmitted by the network device on the second frequency resource;

the second field is used for indicating an offset state between a second frequency resource and the first frequency resource and comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource deviates towards the direction of PRB number reduction relative to the first frequency resource;

when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource deviates towards the direction of PRB number increase relative to the first frequency resource;

the processor is further configured to:

before the processor controls the transceiver to receive a first DCI sent by network equipment, controlling the transceiver to receive a first signaling sent by the network equipment, wherein the first signaling is a high-level signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

45. The apparatus of claim 44, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

46. The apparatus of claim 45, wherein the processor determines the second frequency resource from the first field and the second field as follows:

when the bit value mapped by the second field is the first value, determining the first frequency resource as the second frequency resource;

and when the bit value mapped by the second field is the second value, offsetting the first frequency resource by a first offset in a first offset direction to obtain a second frequency resource.

47. The apparatus of claim 46, wherein the first offset direction is preset or is configured through higher layer signaling; and the number of the first and second electrodes,

the first offset is a preset value, or the first offset is a value configured through a high-level signaling.

48. The apparatus of claim 44, wherein the processor determines the second frequency resource from the first field and the second field as follows:

when the bit value mapped by the second field is the first value, shifting the first frequency resource by a second offset amount in the direction of PRB number reduction to obtain a second frequency resource;

and when the bit value mapped by the second field is the second value, shifting the first frequency resource by a third offset in the direction of increasing the PRB number to obtain the second frequency resource.

49. The device of claim 44 or 48, wherein the transceiver is further configured to:

before the processor determines the second frequency resource according to the first field and the second field, receiving a first signaling sent by the network equipment, wherein the first signaling is a higher layer signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

50. The apparatus of claim 48, wherein the second offset is a preset value or a value configured through higher layer signaling; and the number of the first and second electrodes,

the third offset is a preset value, or the third offset is a value configured through a high-level signaling.

51. The apparatus of claim 46, wherein the first offset direction is a direction of PRB number decrease; or, the first offset direction is a direction in which PRB numbers increase; or,

under the condition that the first frequency resource is positioned on one side of the system bandwidth with the reduced PRB number of the central frequency point, the first offset direction is the direction of the reduced PRB number; and under the condition that the first frequency resource is positioned at one side of the system bandwidth with the increased PRB number of the central frequency point, the first offset direction is the direction of the increased PRB number; or,

under the condition that the first frequency resource is positioned on one side of the system bandwidth with the reduced PRB number of the central frequency point, the first offset direction is the direction of the increased PRB number; and under the condition that the first frequency resource is positioned on one side of the system bandwidth with the increased PRB number of the central frequency point, the first offset direction is the direction of the decreased PRB number.

52. The apparatus of claim 46, wherein the first offset direction corresponds to at least one of a system bandwidth, a narrowband in which the first frequency resource is located, or a type of the second frequency resource;

the types of the second frequency resources comprise Physical Uplink Shared Channel (PUSCH) frequency resources and Physical Downlink Shared Channel (PDSCH) frequency resources.

53. The apparatus according to claim 46 or 48, wherein the first offset, the second offset and the third offset respectively have a correspondence with at least one of a system bandwidth, a narrowband where the first frequency resource is located and a type of the second frequency resource;

the types of the second frequency resources comprise Physical Uplink Shared Channel (PUSCH) frequency resources and Physical Downlink Shared Channel (PDSCH) frequency resources.

54. The apparatus of any of claims 44-48 or 50-52, wherein the number of bits of the second field map is 1.

55. A terminal device comprising a memory, a transceiver, and a processor;

the memory stores a computer program;

the processor is used for calling the computer program stored in the memory to execute:

controlling the transceiver to receive first Downlink Control Information (DCI) transmitted by a network device when a coverage enhancement mode is a coverage enhancement mode B, wherein the first DCI comprises a first field and a second field, the first field is used for indicating a first frequency resource, and the second field is used for indicating an offset state between a second frequency resource and the first frequency resource; determining the second frequency resource according to the first field and the second field, and controlling the transceiver to transmit uplink data to the network device on the second frequency resource, or controlling the transceiver to receive downlink data transmitted by the network device on the second frequency resource; and/or the presence of a gas in the gas,

controlling the transceiver to receive second Downlink Control Information (DCI) sent by a network device when a coverage enhancement mode is a coverage enhancement mode A, where the second DCI includes a third field, the third field is used to indicate a third frequency resource, the third frequency resource includes N consecutive Physical Resource Blocks (PRBs) in a system bandwidth, and N is one of 1, 2, 3, 4, 5, and 6; controlling the transceiver to send uplink data to the network device on the third frequency resource, or controlling the transceiver to receive downlink data sent by the network device on the third frequency resource;

wherein a format of the first DCI is different from a format of the second DCI.

56. The apparatus of claim 55, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is offset relative to the first frequency resource.

57. The apparatus of claim 56, wherein the processor determines the second frequency resource from the first field and the second field as follows:

when the bit value mapped by the second field is the first value, determining the first frequency resource as the second frequency resource;

and when the bit value mapped by the second field is the second value, offsetting the first frequency resource by a first offset in a first offset direction to obtain a second frequency resource.

58. The apparatus of claim 57, wherein the first offset direction is preset or is configured through higher layer signaling; and the number of the first and second electrodes,

the first offset is a preset value, or the first offset is a value configured through a high-level signaling.

59. The apparatus of claim 55, wherein the second field to indicate an offset state between a second frequency resource and the first frequency resource comprises:

when the bit value mapped by the second field is a first value, the second field indicates that the second frequency resource deviates towards the direction of PRB number reduction relative to the first frequency resource;

and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency resource is shifted towards the direction of increasing the PRB number relative to the first frequency resource.

60. The apparatus of claim 59, wherein the processor determines the second frequency resource from the first field and the second field as follows:

when the bit value mapped by the second field is the first value, shifting the first frequency resource by a second offset amount in the direction of PRB number reduction to obtain a second frequency resource;

and when the bit value mapped by the second field is the second value, shifting the first frequency resource by a third offset in the direction of increasing the PRB number to obtain the second frequency resource.

61. The device of claim 59 or 60, wherein the transceiver is further configured to:

before the processor determines the second frequency resource according to the first field and the second field, receiving a first signaling sent by the network equipment, wherein the first signaling is a higher layer signaling;

the first signaling includes first information indicating that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.

62. The apparatus of claim 60, wherein the second offset is a preset value or a value configured through higher layer signaling; and the number of the first and second electrodes,

the third offset is a preset value, or the third offset is a value configured through a high-level signaling.

63. The apparatus of claim 57, wherein the first offset direction is a direction of PRB number decrease; or, the first offset direction is a direction in which PRB numbers increase; or,

under the condition that the first frequency resource is positioned on one side of the system bandwidth with the reduced PRB number of the central frequency point, the first offset direction is the direction of the reduced PRB number; and under the condition that the first frequency resource is positioned at one side of the system bandwidth with the increased PRB number of the central frequency point, the first offset direction is the direction of the increased PRB number; or,

under the condition that the first frequency resource is positioned on one side of the system bandwidth with the reduced PRB number of the central frequency point, the first offset direction is the direction of the increased PRB number; and under the condition that the first frequency resource is positioned on one side of the system bandwidth with the increased PRB number of the central frequency point, the first offset direction is the direction of the decreased PRB number.

64. The apparatus of claim 57, wherein the first offset direction corresponds to at least one of a system bandwidth, a narrowband in which the first frequency resource is located, or a type of the second frequency resource;

the types of the second frequency resources comprise Physical Uplink Shared Channel (PUSCH) frequency resources and Physical Downlink Shared Channel (PDSCH) frequency resources.

65. The apparatus according to claim 57 or 60, wherein the first offset, the second offset and the third offset respectively have a correspondence with at least one of a system bandwidth, a narrowband where the first frequency resource is located and a type of the second frequency resource;

the types of the second frequency resources comprise Physical Uplink Shared Channel (PUSCH) frequency resources and Physical Downlink Shared Channel (PDSCH) frequency resources.

66. The apparatus of any of claims 55-60 or 62-64, wherein the second field map has a number of bits of 1.

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