CN111656843B

CN111656843B - Data transmission method and equipment

Info

Publication number: CN111656843B
Application number: CN201880088025.8A
Authority: CN
Inventors: 南方; 余政
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-02-14
Filing date: 2018-02-14
Publication date: 2022-05-10
Anticipated expiration: 2038-02-14
Also published as: WO2019157744A1; CN111656843A

Abstract

A data transmission method and equipment are used for solving the problems that terminal equipment supporting MTC can only transmit data in a narrow band and frequency resources adopted by data transmission are not flexible enough due to the fixed positions of the narrow bands divided in the bandwidth of an existing system. In this application, a network device sends a first DCI to a terminal device, where the first DCI includes a first field and a second field, the first field is used to indicate a first frequency resource, the second field is used to indicate an offset state between a second frequency resource and the first frequency resource, 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, the network device sends downlink data to the terminal device in the second frequency resource, and the terminal device receives the downlink data in the second frequency resource, or the terminal device sends uplink data to the network device in the second frequency resource, and the network device receives the uplink data in the second frequency resource.

Description

Data transmission method and equipment

Technical Field

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

Background

An existing Long Term Evolution (LTE) system may support Machine Type Communication (MTC) traffic. MTC is the process of acquiring information of the physical world by deploying various devices with certain sensing, computing, executing and communicating capabilities, and implementing information transmission, coordination and processing through a network, thereby implementing interconnection between people and objects, and between objects and objects. In the prior art, a supportable sending and receiving bandwidth of a terminal device applied to MTC is smaller than a system bandwidth, and in order to enable an LTE system to support MTC services, a related technology divides a plurality of narrow bands in the system bandwidth, so that the terminal device supporting MTC transmits data in the narrow bands. In the following, terminal devices that support MTC services are distinguished, and terminal devices that do not support MTC services in the LTE system are referred to as conventional terminal devices.

In the existing transmission mechanism, the positions of narrow bands divided in the system bandwidth are fixed, so that the terminal device supporting MTC can only transmit data in the narrow bands, which causes that the frequency resources used for data transmission of the terminal device supporting MTC are not flexible enough, thereby possibly affecting the data transmission of the conventional terminal device.

Disclosure of Invention

The embodiment of the application provides a data transmission method and equipment, which are used for solving the problems that terminal equipment supporting MTC can only transmit data in a narrow band and frequency resources adopted by data transmission are not flexible enough due to the fixed positions of the narrow bands divided in the bandwidth of the existing system.

In a first aspect, an embodiment of the present application provides a data transmission method, where the method includes: the network device sends first Downlink Control Information (DCI) to the terminal device, where the first DCI includes a first field and a second field, the first field is used to indicate a first frequency resource, the second field is used to indicate an offset state between a 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 network device sends downlink data to the terminal device on the second frequency resource, 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 method, the network equipment can flexibly configure the frequency resources in the system bandwidth for the terminal equipment, and compared with the prior art that the first frequency resources in the narrow band can only be configured for the terminal equipment, the method provides possibility for the traditional terminal equipment to maximally utilize the remaining Physical Resource Blocks (PRBs) and maximize the throughput. And the terminal device can send or receive data on the second frequency resource, compared with the method that the terminal device can only send or receive data on the first frequency resource in the prior art, the method provided by the application has the advantages that the terminal device does not need to limit the narrow band to transmit data, and the frequency resource adopted by data transmission is more flexible.

In a second aspect, an embodiment of the present application provides another data transmission method, where the method includes: the method includes that a network device sends first DCI to a terminal device when determining that a coverage enhancement mode of the terminal device is a coverage enhancement mode B (CE mode B), the first DCI includes a first field and a second field, the first field is used for indicating a first frequency resource, the second field is used for indicating an offset state between a 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 network device sends downlink data to the terminal device at the second frequency resource, the terminal device receives the downlink data sent by the network device at the second frequency resource, or the terminal device sends uplink data to the network device at the second frequency resource, and the network device receives the uplink data sent by the terminal device at the second frequency resource. And/or, in the case that the network device determines that the coverage enhancement mode of the terminal device is coverage enhancement mode a (ce mode a), transmitting a second DCI to the terminal device, the second DCI including a third field indicating a third frequency resource, the third frequency resource including N consecutive PRBs in the system bandwidth, N being one of 1, 2, 3, 4, 5, and 6, the terminal device receiving the second DCI transmitted by the network device, and determines a third frequency resource on which the network device transmits downlink data to the terminal device, and the terminal device receives the downlink data transmitted by the network device on the third frequency resource, or, the terminal device sends the 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.

By the method, the network device can determine what frequency resource is configured for the terminal device through the coverage enhancement mode of the terminal device, and specifically, when the coverage enhancement mode of the terminal device is determined to be CE mode B, the second frequency resource is configured for the terminal device, so that the terminal device can transmit or receive data on the second frequency resource, and compared with a method in the prior art in which data can be transmitted or received only in the first frequency resource, the method provided by the application can flexibly configure the frequency resource for transmitting or receiving data for the terminal device; and/or when it is determined that the coverage enhancement mode of the terminal device is CE mode a, configuring a third frequency resource for the terminal device, where the third frequency resource is N consecutive PRBs in the system bandwidth, and the N consecutive PRBs may be PRBs in different narrow bands, or certainly may not be all PRBs in narrow bands.

In the 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 a plurality of bits of the second field mapping, and different offset states between the second frequency resource and the first frequency resource may also be indicated by different values corresponding to 1 bit of the second field mapping.

In one possible implementation, the second field for indicating the offset state between the second frequency resource and the first frequency resource includes: when the bit value mapped by the second field is the first value, the second field indicates that the second frequency resource does not deviate relative to the first frequency resource; and when the bit mapped by the second field takes the second value, the second field indicates the offset of the second frequency resource relative to the first frequency resource.

In the embodiment of the application, the bits mapped by the second field take different values to indicate that the second frequency resource does not deviate or deviate relative to the first frequency resource, the network device can flexibly configure the second frequency resource for sending or receiving data through the DCI, and meanwhile, compared with the method for indicating the specific relative position relationship between the second frequency resource and the first frequency resource through the DCI, the method can save the bit overhead of the DCI.

Optionally, when the second frequency resource is a resource within a narrow band, the value of the bit mapped by the second field is the first value; and/or, 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 a second value. That is, in the present application, in the case where the second frequency resource is a resource within one narrowband, the second field indicates that the second frequency resource is not offset from the first frequency resource, and in the case where the second frequency resources are not all resources within one narrowband, the second field indicates that the second frequency resource is offset from the first frequency resource.

In one possible design, the determining, by the terminal device, the second frequency resource according to the first field and the second field includes: when the bit value mapped by the second field is a first value, determining the first frequency resource as a second frequency resource; and when the bit value mapped by the second field is a second value, offsetting the first frequency resource by the first offset in the first offset direction to obtain a second frequency resource.

Optionally, the first offset direction is preset, or the first offset direction is configured through a higher layer signaling; and, the first offset is a preset value, or the first offset is a value configured through a higher layer signaling. In this application, under the condition that the second field indicates that the second frequency resource is offset relative to the first frequency resource, the terminal device may offset the first frequency resource according to a preset first offset direction and a preset first offset to obtain the second frequency resource, or may offset the first frequency resource according to the first offset direction and the preset first offset configured by the network device through the high-level signaling to obtain the second frequency resource.

Optionally, the number of bits of the second field map is 1.

In another possible implementation, the second field for indicating the offset state between the second frequency resource and the first frequency resource includes: when the bit value mapped by the second field is the first value, the second field indicates that the second frequency domain resource deviates towards the direction of PRB number reduction relative to the first frequency domain resource; and when the bit value mapped by the second field is a second value, the second field indicates that the second frequency domain resource deviates towards the direction of PRB number increase relative to the first frequency domain resource.

In the embodiment of the application, bits mapped by the second field take different values to indicate that the second frequency resource has a direction offset that is decreased to the PRB number and a direction offset that is increased to the PRB number relative to the first frequency resource, and the network device can flexibly configure the second frequency resource for the terminal device through DCI to transmit or receive data.

In one possible design, the determining, by the terminal device, the second frequency resource according to the first field and the second field includes: when the bit value mapped by the second field is a first value, the first frequency resource is shifted to the direction of PRB number reduction by a second offset to obtain a second frequency resource; and when the bit value mapped by the second field is a second value, offsetting the first frequency resource by a third offset in the direction of increasing the PRB number to obtain a second frequency resource.

In a possible design, the second offset is a preset value, or the second offset is a value configured through a high-level signaling; and, the third offset is a preset value, or the third offset is a value configured through a high layer signaling. In the present application, under the condition that the second frequency domain resource is shifted in the direction of decreasing the PRB number relative to the first frequency domain resource, the terminal device may shift the first frequency resource according to a preset second offset to obtain the second frequency resource, and may also shift the first frequency resource according to the second offset configured by the network device through the high-level signaling to obtain the second frequency resource. Under the condition that the second frequency domain resource is offset towards the direction of increasing PRB number relative to the first frequency domain resource, the terminal equipment can offset the first frequency resource according to a preset third offset to obtain the second frequency resource, and can also offset the first frequency resource according to the third offset configured by the network equipment through a high-level signaling to obtain the second frequency resource.

In a possible design, before the network device sends the first DCI to the terminal device, the network device may send a first signaling to the terminal device, and the terminal device receives the first signaling sent by the network device, where the first signaling is a higher layer signaling. Wherein the first signaling comprises first information indicating that the second field is used for indicating the offset state between the second frequency resource and the first frequency resource. The network device may indicate that the first DCI includes the second field for indicating an offset state of the second frequency resource with respect to the first frequency resource by sending a higher layer signaling to the terminal device. For example, the terminal device may be instructed to receive the first DCI by higher layer signaling, and of course, the terminal device may also be instructed to receive DCI not including the second field by higher layer signaling. For another example, the higher layer signaling may indicate that the second frequency resource is shifted from the first frequency resource, or certainly, the higher layer signaling may indicate that the second frequency resource is not shifted from the first frequency resource. For another example, the terminal device may be instructed to perform resource offset through higher layer signaling, or of course, the terminal device may be instructed not to perform resource offset through higher layer signaling. Specifically, when the higher layer signaling indicates that the second frequency resource is not shifted with respect to the first frequency resource, or indicates that the terminal device does not perform resource shifting, the terminal device may not parse the second field in the first DCI, or receive the DCI not including the second field. Specifically, when the second frequency resource is indicated to be offset relative to the first frequency resource through the high-layer signaling, or the terminal device is indicated to perform resource offset through the high-layer signaling, the terminal device receives the first DCI.

In one possible design, the first offset direction is a direction in which PRB numbers decrease; or the first offset direction is a direction in which the PRB number increases; or, under the condition that the first frequency resource is located on the side where the number of the PRB of the central frequency point of the system bandwidth is reduced, the first offset direction is the direction where the number of the PRB is reduced; 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 increased PRB number; or, in the case that the first frequency resource is located on the side where the PRB number of the central frequency point of the system bandwidth is reduced, the first offset direction is a direction where the PRB number is increased; and under the condition that the first frequency resource is positioned on the side where the PRB number of the central frequency point of the system bandwidth is increased, the first offset direction is the direction in which the PRB number is decreased.

In one 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 type of the second frequency resource includes a Physical Uplink Shared Channel (PUSCH) frequency resource and a Physical Downlink Shared Channel (PDSCH) frequency resource.

In a possible design, 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.

Wherein the type of the second frequency resource comprises a PUSCH frequency resource and a PDSCH frequency resource.

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 examples of the first aspect and the second aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In a possible design, the network device includes a transceiver unit and a processing unit, and these units may perform corresponding functions in the method examples in the first aspect and the second aspect, which refer to the detailed description in the method examples, and are not described herein again.

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 examples of the first aspect and the second aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

In one possible design, the network device includes a memory, a transceiver, a processor, and a bus in its structure, where the memory, the transceiver, and the processor are connected through the bus; the processor calls the instructions stored in the memory to execute the method.

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

In a possible design, the terminal device includes a transceiver unit and a processing unit, and these units may perform corresponding functions in the method examples in the first aspect and the second aspect, for specific reference, detailed description in the method examples is given, and details are not repeated here.

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

In one possible design, the terminal device includes a memory, a transceiver, a processor, and a bus in its structure, where the memory, the transceiver, and the processor are connected through the bus; the processor calls the instructions stored in the memory to execute the method.

In a seventh aspect, an embodiment of the present application further provides 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 is caused to perform the method provided by the first aspect, the second aspect, or any one of the first aspect and the second aspect.

In an eighth aspect, an embodiment of the present application further provides a computer program product, where instructions are stored in the computer program product, and when the computer program product runs on a computer, the computer program product causes the computer to perform the method described in the foregoing first aspect, second aspect, or any one of the foregoing possible designs of the foregoing first aspect and second aspect.

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

Drawings

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application;

fig. 2 is a schematic diagram illustrating the division of a narrowband and an RBG in a system bandwidth according to 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 a schematic diagram of another resource allocation provided in the embodiment of the present application;

fig. 5 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 6 is a schematic flowchart of another data transmission method according to 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 a schematic diagram of another resource allocation provided in the embodiment of the present application;

fig. 9 is a schematic diagram of another resource allocation provided in the embodiment of the present application;

fig. 10 is a schematic diagram of another resource allocation provided in the embodiment of the present application;

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

fig. 12 is a schematic structural diagram of another network device according to 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 in the embodiment of the present application.

Detailed Description

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

First, some terms in the present application are explained so as to be easily understood by those skilled in the art.

1) A terminal device refers to a device providing voice and/or data connectivity to a user, and is also called a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and so on. Such as a handheld device, a vehicle-mounted device, etc., having a wireless connection function. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), a bandwidth-reduced low-complexity UE (base-bandwidth-complexity UE, BL UE), a coverage-enhanced UE (public CE), and the like.

2) A network device refers to a device in a wireless network, for example, a Radio Access Network (RAN) node (or device) for accessing a terminal device to the wireless network, and may also be referred to as a base station. Currently, some examples of RAN nodes are: a Node B (gnb) that continues to evolve, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) access point (access point, AP). In addition, in one network configuration, the RAN may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure separates the protocol layers of the eNB in a Long Term Evolution (LTE) system, the functions of part of the protocol layers are controlled in the CU in a centralized way, the functions of the rest part or all of the protocol layers are distributed in the DU, and the CU controls the DU in a centralized way.

3) In the description of the present application, unless otherwise indicated, "plurality" means two or more, and other terms are similar. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

4) The interactive process refers to a process of transmitting information to each other by two interactive parties, and the transmitted information may be the same or different. For example, the base station 1 and the base station 2 may be both interacting parties, and the base station 1 may request information from the base station 2, and the base station 2 may provide the information requested by the base station 1 to the base station 1. Of course, the base station 1 and the base station 2 may request each other for information, and the requested information may be the same or different.

5) The terms "network" and "system" are often used interchangeably, but are understood by those skilled in the art. Information (information), signal (signal), message (message), channel (channel) may sometimes be mixed, it should be noted that the intended meaning is consistent when the distinction is not emphasized. "of", "corresponding", and "corresponding" may sometimes be used in combination, it being noted that the intended meaning is consistent when no distinction is made.

The data transmission method and the data transmission equipment provided by the embodiment of the application can be applied to a communication system, wherein the communication system comprises an entity for sending uplink data and an entity for receiving the uplink data and the downlink data. For convenience of description in the embodiment of the present application, an entity that sends downlink data is taken as a network device, an entity that receives downlink data is taken as a terminal device, an entity that sends uplink data is taken as a terminal device, and an entity that receives uplink data is taken as a network device, which is not limited, of course.

In a possible example, the data transmission method provided by 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, a diagram of one possible system architecture to which the present application may be applied is shown. As shown in fig. 1, the system architecture includes a network device and terminal devices 1 to 6, and in the system architecture, the network device may be understood as an entity for transmitting or receiving signals on a network side, and may transmit downlink data to the terminal devices 1 to 6 or receive uplink data transmitted by the terminal devices 1 to 6. The terminal devices 1 to 6 may be terminal devices of any form, for example, blus, CE UEs, etc. that support MTC services, and in this application, terminal devices that support MTC services are differentiated, and terminal devices that do not support MTC services in the LTE system are referred to as conventional terminal devices.

It should be understood that the system architecture shown in fig. 1 is described by way of example only as including one network device, but the embodiment of the present application is not limited thereto, for example, the system architecture may further include more network devices; similarly, more terminal devices may be included in the system architecture, and other devices may also be included.

It can be understood that the communication system to which the scheme in the embodiment of the present application is applied may be an LTE system or an LTE-a system, but the scheme in the embodiment of the present application may also be applied to other wireless communication systems, for example, may also be applied to a 5G New Radio (NR) network. The names of the network device and the terminal device related in the embodiment 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 one of the terminal devices 1 to 6. In an application scenario supporting MTC services, taking downlink transmission between a network device and a terminal device 3 as an example, assuming that MTC service transmission is performed between the network device and the terminal device 3, before the network device sends downlink data to the terminal device 3, it needs to configure a frequency resource for transmitting the downlink data for the terminal device 3 through DCI, and further transmits downlink data to the terminal device 3 on the configured frequency resources, and the terminal device 3 can receive the downlink data on the configured frequency resources, and similarly, taking uplink transmission between the network device and the terminal device 3 as an example, before the terminal device 3 sends uplink data to the network device, it needs to receive the frequency resource configured by the network device through DCI for transmitting the uplink data, and sending uplink data to the network device on the configured frequency resource, and the network device receiving the uplink data on the frequency resource. In the system architecture shown in fig. 1, the terminal devices 4 to 6 may also constitute a communication subsystem. Taking downlink transmission between the network device and the terminal device as an example, the network device sends downlink data to the terminal device 1, the terminal device 2, the terminal device 3, the terminal device 5 and the like; the terminal device 5 may send downlink data to the terminal device 4 and the terminal device 6; terminal device 4 and terminal device 6 receive the downlink data sent by terminal device 5. In the prior art, a network device can only configure frequency resources in a narrow band for a terminal device supporting an MTC service for transmitting uplink or downlink data, and the positions of the narrow bands divided in the bandwidth of the existing system are fixed, so that the terminal device supporting the MTC service can only transmit uplink or downlink data in the narrow band, and the frequency resources used for data transmission are not flexible enough, which may affect data transmission of a conventional terminal device.

The system bandwidth of the LTE system, i.e. the bandwidth supported by one carrier, may be one of 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz, and the system bandwidth includes 6, 15, 25, 50, 75 and 100 PRBs in frequency. In release-13 of the LTE system, the BL UE/CE UE may 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, part of BL UE/CE UE can support PUSCH and/or PDSCH bandwidth of 5 MHz. In order to enable the LTE system to support MTC services, several narrow bands are divided in the system bandwidth. A narrow band containing links in frequencyThe frequency width of the next 6 PRBs. Taking downlink transmission as an example, the bandwidth of the downlink system is shared

A narrow band of, among other things,

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

indicating a rounding down operation. Numbering the narrow bands in the system bandwidth according to the ascending order of PRB numbers, namely the narrow band numbers or narrow band indexes, wherein the narrow band indexes are expressed as the narrow band numbers or the narrow band indexes

In the narrowband division in various system bandwidths, as shown in fig. 2, for example, for a system bandwidth of 3MHz, PRBs with the number of 1-6 are included in the narrowband with the index of 0.

In the following, a terminal device supporting MTC services is taken as CE UE as an example to describe the embodiment of the present application. For CE UEs that support only 1.4MHz maximum PDSCH or PUSCH bandwidth, the PDSCH or PUSCH resources allocated by the network device through DCI are resources within one narrow band. LTE Rel-13 provides CE UEs with two coverage enhancement modes, one for a small degree of coverage enhancement mode a (CE mode a) and one for a large degree of coverage enhancement mode b (CE mode b). For CE UEs with different coverage enhancement modes, the network device configures frequency resources for transmitting data for the CE UEs through DCI with 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. The network equipment allocates PUSCH resources for the CE UE in the CE mode A coverage mode through the DCI format 6-0A, and for the CE UE supporting the maximum PUSCH bandwidth of 1.4MHz, the network equipment allocates 1, 2, 3, 4, 5 or 6 PRBs within a narrow band for the CE UE. The network equipment allocates PUSCH resources for CE UE in CE mode B coverage mode through DCI format 6-0B, and allocates 1 or 2 PRBs within a narrow band for CE UE supporting the maximum PUSCH bandwidth of 1.4 MHz. The network equipment allocates PDSCH resources to CE UE in CE mode A coverage mode through DCI format 6-1A, and allocates 1, 2, 3, 4, 5, or 6 PRBs within a narrow band for CE UE supporting the maximum PDSCH bandwidth of 1.4 MHz. The network equipment allocates PDSCH resources to CE UE in CE mode B coverage mode through DCI format 6-1B, and allocates 4 or 6 PRBs within a narrow band for CE UE supporting the maximum PDSCH bandwidth of 1.4 MHz.

Due to the bursty nature of mobile broadband traffic, it is likely that only 1 LTE legacy terminal device exists in some subframes. For PDSCH resource allocation of legacy terminal devices of the LTE system, resource allocation type 0 can provide the most efficient spectrum utilization and the highest throughput for a single terminal device, and is therefore a commonly used resource allocation type. Specifically, for resource allocation type 0, Resource Block Group (RBG) is divided in the system bandwidth, resource block allocation information included in DCI is used to indicate the RBG allocated for PDSCH, and the resource block allocation information includes N_RBGEach bit corresponds to one RBG, and the value of each bit indicates whether the corresponding RBG is allocated to the PDSCH of the terminal equipment. One RBG is composed of P consecutive localized Virtual Resource Blocks (VRBs), and one VRB and PRB have the same size. Wherein the centralized VRB is directly mapped to PRBs numbered n_VRBVRB of (2) corresponds to the number n_PRBThe PRB of (1). Wherein the number of RBGs included in the downlink system bandwidth is represented as N_RBG，

Among all RBGs contained in the system bandwidth, there are

The number of VRBs contained in an RBG is P if

Then there are 1 RBG containing VRB number of

Wherein,

denotes a rounding-up operation and mod denotes a modulo operation, where the value of P is related to the system bandwidth, as shown in table 1. RBG partitioning among various system bandwidths is illustrated in FIG. 2.

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

Since the boundary of the narrowband and the boundary of the RBGs may not be aligned, for example, as shown in fig. 3, taking a 10MHz system bandwidth as an example, when resources need to be allocated to legacy UEs and BL UE/CE UEs in one subframe, if a narrowband with an index of 1 is allocated to the BL UE/CE UEs for use, i.e., PRBs with numbers of 7 to 12 are allocated to the BL UE/CE UEs for use, then RBGs with numbers of 2, 3, and 4 cannot be allocated to the legacy UEs for use, and the legacy terminal devices cannot use the

PRBs

6, 13, and 14, i.e., the legacy terminal devices cannot use the remaining PRBs to the maximum extent, and cannot maximize throughput.

For uplink data of a conventional terminal device, continuous PRBs need to be allocated in a system bandwidth. Uplink PRBs in the narrowband are allocated to BL UE/CE UE according to the existing narrowband partition, which may cause fragmentation of uplink resources in the system bandwidth. As shown in fig. 4, taking a 10MHz system bandwidth as an example, if a narrowband with index 1 is allocated to a BLUE/CE UE, that is, PRBs with numbers of 7-12 are allocated to a BL/CE UE, and PRBs with numbers of 0-5 are Physical Random Access Channel (PRACH) resources, a PRB with number 6 and a PRB with number of 13-49 are not consecutive and cannot be simultaneously used as uplink resources of the same legacy terminal device, so that the legacy terminal device cannot use the remaining PRBs to the maximum, and cannot maximize throughput.

As can be seen from the above, in the existing transmission mechanism, the positions of the narrow bands divided in the system bandwidth are fixed, and therefore, the terminal device supporting MTC can only transmit data in the narrow bands, which may cause the frequency resources adopted for data transmission of the terminal device supporting MTC to be inflexible, may cause fragmentation of the frequency resources in the system bandwidth, and further cause the conventional terminal device not to utilize the remaining PRBs to the maximum extent, and cannot maximize throughput.

Based on this, the application provides a data transmission method, which is used for solving the problems that the narrow bands divided in the existing system bandwidth are fixed in position, so that terminal equipment supporting MTC can only transmit data in the narrow bands, and frequency resources adopted by data transmission are not flexible enough, so that the traditional terminal equipment cannot utilize the remaining PRB most, and throughput cannot be maximized.

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

Fig. 5 is a schematic flowchart of a data transmission method provided in the present application. As shown in fig. 5, includes:

s101: the network equipment sends the first DCI to the terminal equipment, and the terminal equipment receives the first DCI sent by the network equipment.

Wherein the first DCI includes a first field for indicating the first frequency resource and a second field for indicating 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; alternatively, the second frequency resource is offset in a direction in which the PRB number decreases with respect to the first frequency resource, and the second frequency resource is offset in a direction in which the PRB number increases with respect to the first frequency resource.

In the embodiment of the application, the first DCI sent by the network device to the terminal device includes the second field indicating the offset state between the second frequency resource and the first frequency resource, so that the terminal device determines the position of the second frequency resource according to the first frequency resource and the offset state indicated by the second field, and further sends uplink data or receives downlink data on the second frequency resource.

It should be noted that, if the terminal device transmits uplink data on the second frequency resource, the second frequency resource is a PUSCH resource, and if the terminal device receives downlink data on the second frequency resource, the second frequency resource is a 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, 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 the second frequency resource may be determined according to the first frequency resource and an offset state of the second frequency resource with respect to the first frequency resource.

S103 a: and the terminal equipment receives the downlink data sent by the network equipment 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 may receive downlink data sent by the network device on the second frequency resource, where the second frequency resource is a PDSCH resource, and compared with a method that can only receive downlink data on the first frequency resource, by using the method of the present application, the network device may flexibly configure, according to actual applications, a frequency resource for receiving downlink data for the terminal device.

S103 b: and the network equipment receives the uplink data sent by the terminal equipment at 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 may send uplink data to the network device on the second frequency resource, where the second frequency resource is a PUSCH resource, and compared with a method that only sends uplink data on the first frequency resource, by using the method of the present application, the network device may flexibly configure, according to actual applications, a frequency resource for sending uplink data for the terminal device.

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

Fig. 6 is a schematic flow chart of another data transmission method provided in the present application. As shown in fig. 6, includes:

s201: the network equipment transmits first DCI to the terminal equipment under the condition that the coverage enhancement mode of the terminal equipment is determined to be CE mode B, and the terminal equipment receives the first DCI transmitted by the network equipment.

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

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 application, after receiving a first DCI sent by a network device, a terminal device may determine a second frequency resource according to a first field and a second field included in the first DCI, specifically, may determine a first frequency resource according to an indication of the first field, and further may determine the second frequency resource according to the first frequency resource and an offset state of the second frequency resource with respect to the first frequency resource.

S203 a: and the network equipment sends downlink data to the terminal equipment on the second frequency resource, and the terminal equipment receives the downlink data sent by the network equipment on the second frequency resource.

S203 b: and the network equipment receives the uplink data sent by the terminal equipment at the second frequency resource.

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

S204: and the network equipment transmits second DCI to the terminal equipment under the condition that the coverage enhancement mode of the terminal equipment is determined to be CE mode A, and the terminal equipment receives the second DCI transmitted by the network equipment.

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

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

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

S206 a: and the network equipment sends downlink data to the terminal equipment on the third frequency resource, and the terminal equipment receives the downlink data sent by the network equipment on the third frequency resource.

In this embodiment of the application, after the terminal device determines the third frequency resource according to the third field included in the second DCI, the terminal device may receive the downlink data sent by the network device on the third frequency resource, and compared with a method that the downlink data can only be received on the first frequency resource, by using the method of the application, the network device may flexibly configure, according to practical application, the frequency resource for receiving the downlink data for the terminal device.

S206 b: and the network equipment receives the uplink data sent by the terminal equipment on the third frequency resource.

In this embodiment of the present application, after determining the third frequency resource according to the third field included in the second DCI, the terminal device may send uplink data to the network device on the third frequency resource, and compared with the method that only the uplink data can be sent on the first frequency resource, by using the method of the present application, the network device may flexibly configure the frequency resource for sending the uplink data for the terminal device according to actual application.

In the embodiment of the present application, whether S206a or S206b is specifically performed depends on the type of the third frequency resource. Specifically, S206b is executed if the third frequency resource is a frequency resource of the PUSCH, and S206a is executed if the third frequency resource is a frequency resource of the PDSCH.

In the embodiment of the present application, S201, S202, and S203a (S203B) are executed when the coverage enhancement mode of the terminal device is CE mode B. S204, S205, S206a (S206b) are performed in the case where the coverage enhancement mode of the terminal device is CE mode a. The sequence of executing S201, S202, and S203a (S203B) when the coverage enhancement mode of the terminal device is CE mode B and executing S204, S205, and S206a (S206B) when the coverage enhancement mode of the terminal device is CE mode a is not limited in this embodiment of the present application.

In the embodiment of the application, a first field allocates resources for a terminal device supporting a 1.4MHz maximum PDSCH or PUSCH bandwidth, and bits mapped by the first field include a first bit for indicating a narrowband corresponding index allocated for the terminal device and a second bit for indicating a PRB allocated in the allocated narrowband. For PUSCH resource allocation for CE mode A, the first bit comprises

One bit, the second bit comprising 5 bits. For PUSCH resource allocation of CE mode B, the first bit comprises

One bit, the second bit comprising 3 bits. For PDSCH resource allocation of CE mode A, the first bit comprises

One bit, the second bit comprising 5 bits. For PDSCH resource allocation of CE mode B, the first bit comprises

One bit, the second bit comprising 1 bit. Or the bits mapped by the first field allocate resources for the terminal equipment supporting the 5MHz maximum PDSCH or PUSCH bandwidth. When the first field allocates resources for a terminal device supporting a maximum PDSCH or PUSCH bandwidth of 5MHz, the allocated resources include 4 narrow bands at most. The allocation mode of the first field to resources and bit pairs in DCI formats 6-0A, 6-0B, 6-1A or 6-1BThe resources are allocated in the same way. Wherein,

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

In the embodiment of the present application, the number of bits mapped by the second field is not limited. The number of bits mapped by the second field is 1 in one possible design.

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

In the 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, the present application presents two possible scenarios:

in the first case, the second field for indicating the offset status between the second frequency resource and the first frequency resource includes:

and when the bit mapped by the second field takes the first value, the second field indicates that the second frequency resource is not offset relative to the first frequency resource. And when the bit mapped by the second field takes the second value, the second field indicates the offset of the second frequency resource relative to the first frequency resource. For example, if the number of bits mapped by the second field is 1, it may be indicated that the second frequency resource is not shifted relative to the first frequency resource by setting a value of 1 bit mapped by the second field to 0, and it may be indicated that the second frequency resource is shifted relative to the first frequency resource by setting a value of 1 bit mapped by the second field to 1; of course, it may also be indicated that the second frequency resource does not shift relative to the first frequency resource by setting the value of 1 bit mapped by the second field to 1, and the value of 1 bit mapped by the second field to 0 indicates that the second frequency resource shifts relative to the first frequency resource. The second frequency resource being not offset from the first frequency resource means that the second frequency resource and the first frequency resource are the same frequency resource. The second frequency resource offset from the first frequency resource means that the second frequency resource and the first frequency resource are different frequency resources. The second frequency resource is shifted from the first frequency resource, which means 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 different from the position of the first frequency resource in the system bandwidth.

Optionally, when the second frequency resource is a resource within a narrow band, the value of the bit mapped by the second field is a first value, and/or when the second frequency resource is not a resource within a narrow band, the value of the bit mapped by the second field is a second value. That is, in the present application, in the case where the second frequency resource is a resource within one narrowband, the second field indicates that the second frequency resource is not offset from the first frequency resource, and in the case where the second frequency resources are not all resources within one narrowband, the second field indicates that the second frequency resource is offset from the first frequency resource.

In this implementation, the determining, by the terminal device, the second frequency resource according to the first field and the second field includes: and when the bit value mapped by the second field is a second value, the first frequency resource is determined as a second frequency resource, and when the bit value mapped by the second field is a first value, the first frequency resource is shifted to a first shift direction by a first shift amount to obtain a second frequency resource.

In this embodiment of the present application, the first offset direction may be preset, or may be configured through a higher layer signaling. The first offset may be a preset value or a value configured through a high-level signaling, and this application is not limited in this respect. For example, in the present application, when the second field indicates that the second frequency resource is offset relative to the first frequency resource, the terminal device may offset the first frequency resource according to a preset first offset direction and a preset first offset to obtain the second frequency resource, or may offset the first frequency resource according to the first offset direction and the preset first offset configured by the network device through the higher layer signaling to obtain the second frequency resource.

In the embodiment of the present application, the first offset direction is not limited. Specifically, the present application presents two possible scenarios:

in the first case: the first offset direction has a corresponding relationship with at least one of a system bandwidth, a narrowband where the first frequency resource is located, or a type of the second frequency resource. Wherein the type of the second frequency resource comprises a PUSCH frequency resource and a PDSCH frequency resource.

In the second case: the first offset direction is a direction in which the PRB number decreases. Alternatively, the first offset direction is a direction in which the PRB number increases. Or, in the case that the first frequency resource is located on the side where the system bandwidth center frequency point PRB number decreases, the first offset direction is the direction where the PRB number decreases, and in the case that the first frequency resource is located on the side where the system bandwidth center frequency point PRB number increases, the first offset direction is the direction where the PRB number increases. Or, the first offset direction is a direction in which the PRB number increases when the first frequency resource is located on the side where the system bandwidth center frequency point PRB number decreases, and the first offset direction is a direction in which the PRB number decreases when the first frequency resource is located on the side where the system bandwidth center frequency point PRB number increases.

In this embodiment of the application, the first offset corresponds to at least one of a system bandwidth, a narrowband where the first frequency resource is located, and a type of the second frequency resource. Wherein the type of the second frequency resource comprises a PUSCH frequency resource and a PDSCH frequency resource.

In the embodiments of the present application, the above implementation processes are described below by specific examples.

Example one:

the second field is assumed to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the first case, and the first offset direction is assumed to be the direction of PRB number reduction, and there is a corresponding relationship between the first offset and the system bandwidth.

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

Assuming that the system bandwidth used by the network device for communicating with the terminal device is 20MHz in the first example, the terminal device determines the second frequency resource according to the first field and the second field, including: and when the bit value mapped by the second field is a second value, offsetting the first frequency resource by 2 PRBs towards the direction of reducing the PRB number to obtain the second frequency resource.

Example two:

the second field is assumed to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the first case, and the first offset direction is assumed to be the direction of increasing PRB number, and there is a corresponding relationship between the first offset and the system bandwidth. It is assumed in the second example that the corresponding relationship between the first offset and the system bandwidth is optional, and when the system bandwidth is one or more of 3MHz, 5MHz, and 15MHz, the corresponding first offset takes the value of 1 PRB. Optionally, when the system bandwidth is one or more of 10MHz and 20MHz, the corresponding first offset value is 2 PRBs.

Assuming that a system bandwidth used by the network device for communicating with the terminal device is 5MHz in the second example, the terminal device determines the second frequency resource according to the first field and the second field, including: and when the bit value mapped by the second field is a second value, the first frequency resource is determined as a second frequency resource, and the first frequency resource is shifted by 1 PRB to the direction of increasing the PRB number to obtain the second frequency resource.

Example three:

the second field is assumed to be used for indicating the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the first case, and the first offset direction is assumed to be the direction of PRB number reduction, and there is a corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located.

The corresponding relationship between the first offset and the system bandwidth and the narrow band where the first frequency resource is located is not limited in the present application. For example, assume that, in the third example, the corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is optional, and when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband with a narrowband index of 0, the corresponding first offset takes the value of 1 PRB; when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband with the narrowband index of 1, the corresponding first offset value is 0 or 2 PRBs. Optionally, when the system bandwidth is 5MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0 and 1, the corresponding first offset value is 0 or 2 PRBs; when the system bandwidth is 5MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 2 and 3, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is 10MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, 5, 6, and 7, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, and 5, a corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 6, 7, 8, 9, 10, and 11, the corresponding first offset value is 2 PRBs. Optionally, when the system bandwidth is 20MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15, the corresponding first offset is 2 PRBs.

Assuming that the system bandwidth used by the network device for communicating with the terminal device is 3MHz in the third example, the terminal device determines the second frequency resource according to the first field and the second field, including: and when the bit value mapped by the second field is a first value, determining the first frequency resource as a second frequency resource, and when the bit value mapped by the second field is a second value, if the narrowband index where the first frequency resource is located is 0, shifting the first frequency resource by 1 PRB in the direction of PRB number reduction to obtain the second frequency resource, and if the narrowband index where the first frequency resource is located is 1, shifting the first frequency resource by 0 or 2 PRBs in the direction of PRB number reduction to obtain the second frequency resource. When the first offset value is 0, the terminal equipment offsets the first frequency resource by 0 PRBs in the direction of decreasing the PRB number to obtain a second frequency resource, that is, the terminal equipment determines the first frequency resource as the second frequency resource.

As shown in fig. 7, for different system bandwidths and for first frequency resources in different narrow bands, when a bit mapped by a second field takes a first value or a second value, the first frequency resources are shifted.

Example four:

the second field is assumed to be used for indicating an offset state between the second frequency resource and the first frequency resource, which is an indication manner in the first case, and the first offset direction is assumed to be a direction in which a PRB number increases, and there is a corresponding relationship between the first offset and a system bandwidth and a narrowband where the first frequency resource is located.

The corresponding relationship between the first offset and the system bandwidth and the narrow band where the first frequency resource is located is not limited in the present application. For example, assume that, in the fourth example, the corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is optional, and when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband with a narrowband index of 0, the corresponding first offset takes the value of 1 PRB; when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband with the narrowband index of 1, the corresponding first offset value is 0 or 1 PRB. Optionally, when the system bandwidth is 5MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0 and 1, the corresponding first offset value is 0 or 2 PRBs; when the system bandwidth is 5MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 2 and 3, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is 10MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, 5, and 6, the corresponding first offset value is 2 PRBs; when the system bandwidth is 10MHz, and for the first frequency resource in the narrowband with the narrowband index of 7, the corresponding first offset value is 1 or 2 PRBs. Optionally, when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, and 5, a corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes 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 with the narrowband index of 11, the corresponding first offset value is 1 or 2 PRBs. Optionally, when the system bandwidth is 20MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15, the corresponding first offset value is 2 PRBs.

Assuming that the system bandwidth used by the network device for communicating with the terminal device in the fourth example is 20MHz, the terminal device determines the second frequency resource according to the first field and the second field, including: and when the bit value mapped by the second field is a first value, determining the first frequency resource as the second frequency resource, and when the bit value mapped by the second field is a second value, if the narrowband index where the first frequency resource is located is 12, shifting the first frequency resource by 2 PRBs in the direction of increasing the PRB number to obtain the second frequency resource. When the first offset value is 0, the terminal equipment offsets the first frequency resource by 0 PRBs in the direction of increasing the PRB number to obtain a second frequency resource, namely, the terminal equipment determines the first frequency resource as the second frequency resource.

As shown in fig. 8, for different system bandwidths and for first frequency resources in different narrow bands, when a bit mapped by a second field takes a first value or a second value, the first frequency resources are shifted.

In this application, the first offset of the first to fourth examples may further correspond to the type of the second frequency resource. Optionally, the first offsets of the first to fourth examples further have a corresponding relationship with PDSCH frequency resources, that is, when the type of the second frequency resource is PDSCH frequency resources, the network device may allocate frequency resources for receiving downlink data to the terminal device by using the methods of the first to fourth examples.

In the embodiment of the present application, by using the resource allocation method, the first frequency resource may be aligned with a boundary of an RBG in a system bandwidth after being shifted. When the network equipment allocates the PDSCH frequency resources for the terminal equipment in one subframe, the resource fragmentation caused by the segmentation of the residual resources can be avoided. And then the residual resources can be used by the traditional terminal equipment to the maximum extent, and the throughput of the traditional terminal equipment is further ensured to the maximum extent. In addition, in the application, the terminal device is instructed to determine the second frequency resource through the first field and the second field, and the allocation manner of the first field to the resource may multiplex the allocation manner of bits in the existing DCI format 6-0A, 6-0B, 6-1A, or 6-1B to the resource. The embodiment of the present application may be applied that the frequency resource indicated by the first field is a resource in one narrow band, and may also be applied that the frequency resource indicated by the first field is a resource in multiple narrow bands.

Example five:

it is assumed that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource, which is an indication manner in the first case, and it is assumed that the first offset direction is a direction in which the PRB number decreases when the first frequency resource is located on a side in which the PRB number of the system bandwidth center frequency point decreases, and the first offset direction is a direction in which the PRB number increases when the first frequency resource is located on a side in which the PRB number of the system bandwidth center frequency point increases, and it is assumed that there is a correspondence relationship between the first offset and the system bandwidth and the narrowband in which the first frequency resource is located.

The corresponding relationship between the first offset and the system bandwidth and the narrow band where the first frequency resource is located is not limited in the present application. For example, assume that, in the fifth example, the corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is optional, and when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband with a narrowband index of 0, the corresponding first offset takes the value of 1 PRB; when the system bandwidth is 3MHz, and for the first frequency resource in the narrowband with the narrowband index of 1, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is 5MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0 and 1, the corresponding first offset value is 0 or 2 PRBs; when the system bandwidth is 5MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 2 and 3, the corresponding first offset value is 1 PRB. Alternatively, there may be two correspondences for system bandwidths of 10MHz and 15MHz, respectively, in this example. For a system bandwidth of 10MHz, the following two options are available: when the system bandwidth is 10MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, and 3, the corresponding first offset value is 1 PRB; when the system bandwidth is 10MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 4, 5, 6, and 7, the corresponding first offset value is 1 or 2 PRBs. Or, when the system bandwidth is 10MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, and 3, the corresponding first offset value is 1 PRB; when the system bandwidth is 10MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 4, 5 and 6, the corresponding first offset value is 2 PRBs; when the system bandwidth is 10MHz, and for the first frequency resource in the narrowband with the narrowband index of 7, the corresponding first offset value is 1 or 2 PRBs. For the system bandwidth of 15MHz, the following two corresponding relationships are available: when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, and 5, the corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 6, 7, 8, 9, 10, and 11, the corresponding first offset value is 1 or 2 PRBs. Or, when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, and 5, the corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes 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 with the narrowband index of 11, the corresponding first offset value is 1 or 2 PRBs. Optionally, when the system bandwidth is 20MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, 5, 6, and 7, the corresponding first offset value is 2 PRBs; when the system bandwidth is 20MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 8, 9, 10, 11, 12, 13, 14, and 15, the corresponding first offset value is 2 PRBs.

Assuming that a system bandwidth used by the network device for communicating with the terminal device is 20MHz in the fifth example, the terminal device determines the second frequency resource according to the first field and the second field, including: and when the bit value mapped by the second field is a first value, determining the first frequency resource as the second frequency resource, and when the bit value mapped by the second field is a second value, if the narrowband index where the first frequency resource is located is 12, shifting the first frequency resource by 2 PRBs in the direction of increasing the PRB number to obtain the second frequency resource. When the first offset value is 0, the terminal equipment offsets the first frequency resource by 0 PRB in the direction of increasing or decreasing the PRB number to obtain a second frequency resource, that is, the terminal equipment determines the first frequency resource as the second frequency resource.

As shown in fig. 9, for different system bandwidths and for first frequency resources in different narrow bands, when a bit mapped by a second field takes a first value or a second value, the first frequency resources are shifted.

In this application, the first offset of the fifth example may further have a corresponding relationship with the type of the second frequency resource. Optionally, the first offset of the fifth example further has a corresponding relationship with a PUSCH frequency resource, that is, when the type of the second frequency resource is a PUSCH frequency resource, the network device may allocate, by using the method of the fifth example, the frequency resource for sending the uplink data to the terminal device.

For the resource allocation method in the fifth example, in a possible implementation manner, for a system bandwidth of 10MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 4, 5, 6, and 7, 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 a system bandwidth of 10MHz, for a first frequency resource in a narrowband with a narrowband index of 7, 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 a system bandwidth of 15MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 6, 7, 8, 9, 10, and 11, 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 a system bandwidth of 15MHz, for a first frequency resource in a narrowband with a narrowband index of 11, 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.

Example six:

it is assumed that the second field is used for indicating a shift state between the second frequency resource and the first frequency resource, and is an indication manner in the first case, and it is assumed that the first shift direction is a direction in which a PRB number increases when the first frequency resource is located on a side where a PRB number of a central frequency point of the system bandwidth decreases, and the first shift direction is a direction in which the PRB number decreases when the first frequency resource is located on a side where the PRB number of the central frequency point of the system bandwidth increases, and it is assumed that there is a correspondence between the first shift amount and the system bandwidth and a narrowband where the first frequency resource is located.

The corresponding relationship between the first offset and the system bandwidth and the narrow band where the first frequency resource is located is not limited in the present application. The following description will be given taking as an example a case where the number of PRBs included in the frequency range of the system bandwidth is odd. For example, assume that, in the sixth example, the corresponding relationship between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is optional, and when the system bandwidth is 3MHz, for the first frequency resource in the narrowband with a narrowband index of 0, the corresponding first offset takes the value of 1 PRB; when the system bandwidth is 3MHz, for a first frequency resource in a narrowband with a narrowband index of 1, the corresponding first offset value is 0 or 2 PRBs. Optionally, when the system bandwidth is 5MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0 and 1, the corresponding first offset value is 0 or 2 PRBs; when the system bandwidth is 5MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 2 and 3, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is 15MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, and 5, a corresponding first offset value is 1 PRB; when the system bandwidth is 15MHz, and for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 6, 7, 8, 9, 10, and 11, the corresponding first offset value is 0 or 2 PRBs. When the first offset value is 0, the terminal equipment offsets the first frequency resource by 0 PRB in the direction of increasing or decreasing the PRB number to obtain a second frequency resource, that is, the terminal equipment determines the first frequency resource as the second frequency resource.

In this embodiment, the network device may re-determine, for the terminal device, a second frequency resource used for transmitting the uplink data or receiving the downlink data, and determine an offset state between the second frequency resource and the first frequency resource, and then indicate, through a second field in the first DCI, 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, to obtain the second frequency resource used for transmitting the uplink data or receiving the downlink data.

In a second case, the second field for indicating the offset status between the second frequency resource and the first frequency resource includes:

and when the bit value mapped by the second field is the first value, the second field indicates that the second frequency domain resource deviates towards the direction of PRB number reduction relative to the first frequency domain resource. And when the bit value mapped by the second field is a second value, the second field indicates that the second frequency domain resource deviates towards the direction of PRB number increase relative to the first frequency domain resource. For example, if the number of bits mapped by the second field is 1, a 1-bit value mapped by the second field is 0 to indicate that the second frequency-domain resource is shifted in the direction of increasing the PRB number relative to the first frequency-domain resource, and a 1-bit value mapped by the second field is 1 to indicate that the second frequency-domain resource is shifted in the direction of increasing the PRB number relative to the first frequency-domain resource; of course, a 1-bit value mapped by the second field being 1 may also indicate that the second frequency-domain resource is shifted in the direction of decreasing the PRB number relative to the first frequency-domain resource, and a 1-bit value mapped by the second field being 0 indicates that the second frequency-domain resource is shifted in the direction of increasing the PRB number relative to the first frequency-domain resource.

In this implementation, the determining, by the terminal device, the second frequency resource according to the first field and the second field includes: and when the bit value mapped by the second field is a second value, shifting the first frequency resource by a third offset in the direction of increasing the PRB number to obtain a second frequency resource.

In this embodiment of the present application, the second offset may be a preset value or a value configured through a higher layer signaling. The third offset may be a preset value or a value configured through a high-level signaling, and this application is not limited in this respect. For example, in the present application, when the second frequency domain resource is shifted in a direction in which the PRB number is reduced relative to the first frequency domain resource, the terminal device may shift the first frequency resource according to a preset second offset to obtain the second frequency resource, and may also shift the first frequency resource according to the second offset configured by the network device through the high-level signaling to obtain the second frequency resource.

In this embodiment, before the network device sends the first DCI to the terminal device, a first signaling may be sent to the terminal device, and the terminal device receives the first signaling sent by the network device, where the first signaling is a high-level signaling. Wherein the first signaling comprises first information indicating that the second field is used for indicating the offset state between the second frequency resource and the first frequency resource. The network device may indicate that the first DCI includes the second field for indicating an offset state of the second frequency resource with respect to the first frequency resource by sending a higher layer signaling to the terminal device. For example, the terminal device may be instructed to receive the first DCI by higher layer signaling, and of course, the terminal device may also be instructed to receive DCI not including the second field by higher layer signaling. For another example, the higher layer signaling may indicate that the second frequency resource is shifted from the first frequency resource, or certainly, the higher layer signaling may indicate that the second frequency resource is not shifted from the first frequency resource. For another example, the terminal device may be instructed to perform resource offset through higher layer signaling, or of course, the terminal device may be instructed not to perform resource offset through higher layer signaling. Specifically, when the higher layer signaling indicates that the second frequency resource is not shifted with respect to the first frequency resource, or indicates that the terminal device does not perform resource shifting, the terminal device may not parse the second field in the first DCI, or receive the DCI not including the second field. Specifically, when the second frequency resource is indicated to be offset relative to the first frequency resource through the high-layer signaling, or the terminal device is indicated to perform resource offset through the high-layer signaling, the terminal device receives the first DCI.

It is to be understood that the higher layer signaling is not limited in this application, and may be RRC signaling, for example.

In this embodiment of the application, the second offset and the third offset 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. Wherein the type of the second frequency resource comprises a PUSCH frequency resource and a PDSCH frequency resource.

Example seven:

the second field is assumed to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the second case, and the second offset and the third offset are assumed to have a corresponding relationship with the system bandwidth.

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

Assuming that a system bandwidth used by the network device for communicating with the terminal device is 20MHz in the seventh example, the terminal device determines the second frequency resource according to the first field and the second field, including: and when the bit value mapped by the second field is a second value, the first frequency resource is shifted by 2 PRBs in the direction of increasing the PRB number.

Example eight:

the second field is assumed to be used for indicating the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the second case, and the second offset and the third offset are assumed to have a corresponding relationship with the system bandwidth and the narrowband where the first frequency resource is located.

In the present application, the correspondence between the second offset and the third offset and the system bandwidth and the narrow band where the first frequency resource is located are not limited. For example, assume that, in example eight, the corresponding relationships between the second offset and the third offset and the system bandwidth and the narrowband where the first frequency resource is located are optional, when the system bandwidth is 3MHz, for the first frequency resource in the narrowband with a narrowband index of 0, the corresponding second offset takes on 1 PRB, and the corresponding third offset takes on 1 PRB; when the system bandwidth is 3MHz, for a first frequency resource in a narrowband with a narrowband index of 1, 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 a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0 and 1, the corresponding second offset value is 2 PRBs, and the corresponding third offset value is 2 PRBs; when the system bandwidth is 5MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 2 and 3, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 1 PRB. Alternatively, there may be two correspondences for system bandwidths of 10MHz and 15MHz, respectively, in this example. For a system bandwidth of 10MHz, the following two options are available: when the system bandwidth is 10MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, 5, 6, and 7, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 2 PRB. Or, when the system bandwidth is 10MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, 5, and 6, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 2 PRB; when the system bandwidth is 10MHz, for a first frequency resource in a narrowband with a narrowband index of 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 corresponding relationships are available: when the system bandwidth is 15MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 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, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 6, 7, 8, 9, 10, and 11, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 2 PRB. Or, when the system bandwidth is 15MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 0, 1, 2, 3, 4, and 5, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 1 PRB; for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 6, 7, 8, 9 and 10, the corresponding second offset value is 2 PRBs, and the corresponding third offset value is 2 PRBs; for the first frequency resource in the narrowband with the narrowband index of 11, the corresponding second offset value is 2 PRBs, and the corresponding third offset value is 1 PRB. Optionally, when the system bandwidth is 20MHz, for a first frequency resource in at least one of the narrow bands with the narrow band indexes of 8, 9, 10, 11, 12, 13, 14, and 15, the corresponding second offset value is 2 PRBs, and the corresponding third offset value 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 the offset of the second frequency resource from the first frequency resource in the direction of decreasing PRB number, or indicates the offset of the second frequency resource from the first frequency resource in the direction of increasing PRB number, which may be for resources in a partial narrowband in the system bandwidth. For example, when the system bandwidth is 3MHz, it may be applied only to the first frequency resource in the narrow band with index 0; when the system bandwidth is 5MHz, it may be applied only to the first frequency resource in the narrowband with

index

2, 3 or 1, 2, 3.

Assuming that the system bandwidth used by the network device for communicating with the terminal device is 5MHz in the example eight, the terminal device determines the second frequency resource according to the first field and the second field, including: if the index of the narrow band where the first frequency resource is located is 1 and the bit value mapped by the second field is a first value, the first frequency resource is shifted by 2 PRBs in the direction of PRB number reduction, and when the bit value mapped by the second field is a second value, the first frequency resource is shifted by 2 PRBs in the direction of PRB number increase. When the second offset or the third offset is 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 for first frequency resources in different narrow bands, when a bit mapped by a second field takes a first value or a second value, the first frequency resources are shifted.

In the embodiment of the present application, the same resource allocation method may be adopted for different system bandwidths, and of course, different methods from the above example one to example eight may also be adopted, for example, example five or example six may be adopted for the system bandwidths of 3MHz, 5MHz, and 15MHz, and example seven or example eight may be adopted for the system bandwidths of 10MHz and 20 MHz.

The above-mentioned scheme provided by the embodiments of the present application is mainly introduced from the perspective of interaction between the nodes. It is understood that the network device and the terminal device include hardware structures and/or software modules for performing the respective functions in order to implement the functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the network device and the terminal device may be divided into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

With integrated units, fig. 11 shows a possible exemplary block diagram of a network device involved in an embodiment of the present invention. In fig. 11, a network device 1100 includes: a processing unit 1102 and a communication unit 1103. The processing unit 1102 is configured to control and manage actions of the network device 1100. The communication unit 1103 is used to support communication between the network device 1100 and other network entities (e.g., terminals). The network device 1100 may also 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, such as a general Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processing unit 1102 may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication unit 1103 may be a communication interface, a transceiver circuit, or the like, where the communication interface is generally referred to, and in a specific implementation, the communication interface may include a plurality of interfaces, which may include, for example: 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 according to the 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 an embodiment of the present application, the processor 1201 is configured to control and manage an action of the network device 1200, for example, the processor 1201 is configured to support, in the embodiment, a relevant step of the network device 1200 determining the first frequency resource, the second frequency resource, and the first DCI, and the like. Optionally, the network device 1200 may also 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. The memory 1202 is used for storing codes and data of the network device 1200. The communication interface 1203 is used for supporting the communication of the network device 1200.

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

the processor 1201 is a control center of the network device 1200, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 1201 is a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention, such as: one or more microprocessors (digital signal processors, DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

Among other things, the processor 1201 can perform various functions of the network device 1200 by running or executing software programs stored in the memory 1202, as well as invoking data stored in the memory 1202.

The Memory 1202 may be, but is not limited to, a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), a magnetic Disc storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 1202, which may be separate, is coupled to the processor 1201 through the communication bus 1204. The memory 1202 may also be integrated with the processor 1201.

Communication interface 1203, using any transceiver or the like, is used for communication with other nodes in the system shown in fig. 5 and 6, such as: other terminals, etc. And may also be used to communicate with communications Networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc. The communication interface 1203 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.

The communication bus 1204 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 12, but this is not intended to represent only one bus or type of bus.

The device architecture shown in fig. 12 does not constitute a limitation of network devices and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

In case of an integrated unit, fig. 13 shows a possible exemplary block diagram of a terminal device involved in an embodiment of the present invention. In fig. 13, a terminal apparatus 1300 includes: a processing unit 1302 and a communication unit 1303. The processing unit 1302 is configured to control and manage the operation of the terminal apparatus 1300. The communication unit 1303 is used to support communication between the terminal device 1300 and other network entities (e.g., terminals). Terminal apparatus 1300 can also include a storage unit 1301 for storing program codes and data of terminal apparatus 1300.

The processing unit 1302 may be a processor or a controller, such as a general Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processing unit 1302 may also be a combination of computing functions, e.g., comprising one or more microprocessors, a combination of a DSP and a microprocessor, or the like. The communication unit 1303 may be a communication interface, a transceiver circuit, or the like, where the communication interface is generically referred to, and in a specific implementation, the communication interface may include a plurality of interfaces, which may include, for example: an interface between the terminal device and the terminal device, an interface between the terminal device and other network elements, and/or other interfaces. The storage unit 1301 may be a memory.

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

Referring to fig. 14, the terminal apparatus 1400 includes: at least one processor 1401. In the embodiment of the present application, the processor 1401 is configured to control and manage the action of the terminal device 1400, for example, the processor 1401 is configured to support, in the embodiment, a related step in which the terminal device 1400 determines the second frequency resource according to the first field and the second field indicated in the first DCI, and the like. Optionally, the terminal device 1400 may further comprise 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. The memory 1402 is used for storing codes and data of the terminal device. The communication interface 1403 is used for supporting the terminal device 1400 to communicate.

The following specifically describes each constituent element of the terminal apparatus 1400:

processor 1401 is the control center of terminal 1400, and may be a single processor or a combination of multiple processing elements. For example, processor 1401 is a Central Processing Unit (CPU), or may be an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention, such as: one or more microprocessors (digital signal processors, DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

The processor 1401 can perform, among other things, 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.

The Memory 1402 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory 1402 may be separate and coupled to the processor 1401 via a communication bus 1404. Memory 1402 may also be integrated with processor 1401.

Communication interface 1403, using any transceiver-like device for communication with other nodes in the systems of fig. 5 and 6, such as: other network devices, etc. And may also be used to communicate with communications Networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc. The communication interface 1203 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.

The communication bus 1404 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 14, but this is not intended to represent only one bus or type of bus.

The device architecture shown in fig. 14 does not constitute a limitation of the terminal device and may include more or fewer components than those shown, or some of the components may be combined, or a different arrangement of components.

Based on the same concept as that of the method embodiment, an embodiment of the present application further provides 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 is caused to execute the data transmission method provided by the first aspect or any design of the first aspect. In the embodiment of the present application, the computer-readable storage medium is not limited, and may be, for example, a RAM (random-access memory), a ROM (read-only memory), and the like.

Based on the same concept as the method embodiment, an embodiment of the present application further provides a computer program product, where instructions are stored, and when the computer program product runs on a computer, the computer program product causes the computer to execute the data transmission method provided in the first aspect or any one of the possible designs of the first aspect.

Embodiments of the present application also provide a communication apparatus (e.g., an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above method. The apparatus implementing the power tracker and/or the power supply generator described herein may be a standalone device or may be part of a larger device. The device may be (i) a free-standing IC; (ii) a set of one or more 1C, which may include a memory IC for storing data and/or instructions; (iii) RFICs, such as RF receivers or RF transmitter/receivers; (iv) an ASIC, such as a mobile station modem; (v) a module that may be embedded within other devices; (vi) a receiver, cellular telephone, wireless device, handset, or mobile unit; (vii) others, and so forth.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The various illustrative logical units and circuits described in this application may be implemented or operated upon by design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be disposed in a terminal device. In the alternative, the processor and the storage medium may reside as discrete components in a terminal device.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the invention has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the invention. Accordingly, the specification and figures are merely exemplary of the invention as defined in the appended claims and are intended 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 changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such 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 such modifications and variations.

Claims

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:

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,

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:

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:

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;

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;

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:

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;

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;

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:

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

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,

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:

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

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:

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,

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,

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;

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;

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 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;

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:

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,

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;

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:

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,

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:

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

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;

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 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;

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:

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

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,

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

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;

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,

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,

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;

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;

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;

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:

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

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,

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:

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

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

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,

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,

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;

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;

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