WO2020164127A1

WO2020164127A1 - Communication method and communication device

Info

Publication number: WO2020164127A1
Application number: PCT/CN2019/075254
Authority: WO
Inventors: 毕文平; 余政; 程型清
Original assignee: 华为技术有限公司
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-08-20
Also published as: CN113396622B; CN113396622A

Abstract

Provided are a communication method and a communication device. The method comprises: a first apparatus receiving downlink control information sent by a second apparatus; the first apparatus determining, according to the downlink control information, a first repeat count and a first resource block quantity within a first narrow band, wherein the first resource block quantity is an element in a first resource block quantity set, the first resource block quantity set is one of multiple resource block quantity sets, each of the multiple resource block quantity sets is associated with a repeat count set, and the repeat count sets associated with different resource block quantity sets are different; and the first apparatus receiving, according to the first resource block quantity and the first repeat count, a downlink data channel sent by the second apparatus. In the invention, resource block quantity sets are associated with repeat count sets, thereby reducing DCI overhead, and facilitating enhancing performance of a system.

Description

Communication method and communication device

Technical field

This application relates to the communication field, and more specifically, to a communication method and communication device in the communication field.

Background technique

In wireless communication systems, the role of control information is very important. Two communication devices can realize information interaction through control information, and realize the control of one communication device to another communication device. Take the base station and user equipment as examples. In the downlink communication process, the base station sends downlink control information (DCI) to the terminal equipment. The downlink control information is used to schedule data channels or transport blocks (TB). The overhead of DCI saves transmission resources. One DCI can be used to schedule multiple transmission blocks. When DCI schedules more transmission blocks, more bits are required in DCI to indicate different transmission blocks or the transmission status of different transmission blocks. And so on, this will cause the DCI overhead to be relatively large, resulting in poor transmission performance of the system.

Summary of the invention

The present application provides a communication method and communication device, which can reduce the overhead of DCI and help improve the transmission performance of the system.

In a first aspect, a communication method is provided, including: a first device receives downlink control information sent by a second device; the first device determines a first number of repetitions and a first number of resource blocks according to the downlink control information, where the first resource The block quantity is an element in the first resource block quantity set. The first resource block quantity set includes one or more resource block quantities. The first resource block quantity set is a set of multiple resource block quantity sets, and multiple resources Each resource block quantity set in the block quantity set is associated with a set of repetition times, and the set of repetition times associated with different resource block quantity sets is different. The first repetition quantity is the first set of repetition times associated with the first resource block quantity set Elements in

The first device receives the downlink information sent by the second device according to the first resource block quantity and the first repetition number, the downlink information includes data and/or control information and/or reference signals and/or data channels, where the data channels include downlink data channels , The data includes downlink data.

Therefore, the communication method provided by the embodiment of the present application can associate the set of resource block numbers with the set of repetition times, thereby reducing the overhead of DCI and helping to improve the performance of the system.

It should be noted that there is no intersection between different resource block quantity sets. The number of elements included in different resource block quantity sets is different, or the number of elements included in different resource block quantity sets is the same but the value of no element in the different resource block quantity sets is the same.

Optionally, the first number of resource blocks may be the number of resource blocks in the first narrowband.

It should be noted that different sets of repetition times may or may not have intersections. Different sets of repetition times include different numbers of elements and different sets of repetition times may have part of the same elements, or different sets of repetition times include different numbers of elements and different sets of repetition times do not have the same elements, or, The number of elements included in different sets of repetition times is the same, but the value of at least one element in different resource block sets is different.

The number of resource blocks can be referred to as the number of resource blocks. The number of resource blocks can include the length of the resource block, that is, determine which resource blocks are used to transmit the downlink data channel. The starting position of the resource block and the length of the resource block can be used to determine which resources The block is used to transmit the downlink data channel; the number of resource blocks can also indicate the resource block index used to transmit the downlink data channel, so that the downlink data channel can be transmitted on the resource block indicated by the resource block index.

Optionally, the downlink control information may also schedule one or more transmission blocks.

Optionally, the first device may be a terminal device and the second device may be a network device; or the first device may be a terminal device and the second device may also be a terminal device. Optionally, the first device may be a device with a function of receiving information, and the second device may be a device with a function of sending information.

Optionally, the multiple length sets are predefined by the first device and the second device or configured by the second device.

For example, configuring multiple length sets for the second device may be: the second device configures system information or radio resource control (radio resource control, RRC) signaling or media access control control element (MAC CE) High-level signaling configuration such as signaling, or the second device may also configure multiple length sets through physical layer signaling. For example, the physical layer signaling may be downlink control information (DCI).

Optionally, the multiple sets of repetition times are predefined by the first device and the second device or configured by the second device.

For example, the second device may configure multiple sets of repetition times: the second device configures through system information or RRC signaling or media access control signaling MAC CE and other high-level signaling configuration, or the second device may also configure through the physical layer The signaling configures multiple length sets, for example, the physical layer signaling may be DCI.

In a possible implementation manner, the first number of repetitions is the number of repetitions of downlink control information transmission and/or the number of repetitions of data channel transmission scheduled by the downlink control information, where the data channel includes a downlink data channel.

In a possible implementation manner, the downlink control information is also used for the start position of the resource block of the first device in the first narrowband. For example, the start position of the resource block includes the index of the start resource block, and the method further includes : The first device determines the starting position of the resource block in the first narrowband according to the downlink control information.

In a possible implementation manner, the downlink control information includes first information and second information. The first information is used to indicate the starting position of the resource block and/or the number of the first resource block, and the second information is used for the first device in the The first repetition quantity is determined in the first repetition quantity set; the first device determines the starting position of the resource block in the first narrowband and/or the first resource block quantity according to the downlink control information, including:

The first device determines the starting position of the resource block and/or the number of the first resource block according to the first information;

The first device determines the first number of repetitions according to the downlink control information, including:

The first device determines the first repetition number according to the second information and the first repetition number set.

Optionally, the first device determines the first set of repetition times according to the first resource block quantity set where the first resource block quantity is located.

Optionally, the first device determines the first set of repetition times according to the first resource block quantity.

In a possible implementation manner, the first device determining the first repetition number according to the second information and the first repetition number set may be replaced with: the first device determines the first repetition number in the first repetition number set according to the second information

Optionally, the first bit field or the first field of the downlink control information is used to carry the first information, and the second bit field or the second field of the downlink control information is used to carry the second information.

In a possible implementation manner, for a terminal device with a better coverage level, for example, the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, the first information and The total number of bits included in the second information is 4 or 5. That is, only 4 bits or 5 bits can be used to indicate the start position of the resource block and/or the first resource block number and the first repetition number, thereby saving the overhead of the DCI.

In a possible implementation manner, for a terminal device with a poor coverage level, for example, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, the first information and the first device The total number of bits contained in the two messages is 1 or 2 or 3. That is, only 1 bit or 1 bit or 3 bits can be used to indicate the starting position of the resource block and/or the first resource block quantity and the first repetition number, thereby saving the overhead of DCI.

In a possible implementation manner, the second information is used to indicate the order or index of the first repetition quantity in the first repetition quantity set, and the first device determines the first repetition quantity in the first repetition quantity set according to the second information , Including: the first device determines the first repetition quantity in the first repetition quantity set according to the order or index indicated by the second information.

Optionally, the elements in the first set of repetition times may be arranged in a certain order, for example, from small to large or from large to small.

In a possible implementation manner, the first device determining the first repetition number according to the downlink control information includes: the first device determining the first repetition number set according to the first resource block quantity set where the first resource block quantity is located; the first device The first repetition quantity is determined in the first repetition quantity set according to the order or index indicated by the second information.

In a possible implementation manner, the first device determining the first number of repetitions according to the downlink control information includes:

The first device determines the first resource block quantity set where the first resource block quantity is located according to the first resource block quantity indicated by the first information;

The first device determines, according to the first resource block quantity set, a first set of repetition times associated with the first resource block quantity set;

The first device determines the first repetition quantity in the first repetition quantity set according to the order or index indicated by the second information.

In a possible implementation manner, the downlink control information includes third information, and the third information is used to indicate the number of first resource blocks and the first number of repetitions, or the third information is used to indicate the starting position of the resource block, the first The number of resource blocks and the first number of repetitions.

The first device may determine the first number of repetitions and the number of first resource blocks in the first narrowband according to the third information, or determine the first number of repetitions and the number of first resource blocks and resources in the first narrowband according to the third information The starting position of the block.

In a possible implementation manner, for a terminal device with a good coverage level, for example, the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment, and the third information includes The number of bits in is 4 or 5, that is, only 4 bits or 5 bits can be used to indicate the starting position of the resource block and/or the first resource block number and the first repetition number, thereby saving the overhead of DCI.

In a possible implementation manner, for terminal devices with poor coverage levels, for example, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal devices, the third information includes The number of bits is 1 or 2 or 3. That is, only 1 bit or 1 bit or 3 bits can be used to indicate the starting position of the resource block and/or the first resource block quantity and the first repetition number, thereby saving the overhead of DCI.

Optionally, the first narrowband includes a narrowband, and one narrowband includes 6 resource units. The resource unit may be a resource block (RB) or a physical resource block (PRB), or a subcarrier or resource element (resource block). element, RE) is either a resource element group (resource element group, REG), a sub-carrier group, or a sub-physical resource block (sub-PRB), and so on.

Optionally, the first narrowband is indicated by the second device. For example, the first device can indicate the first narrowband index according to the downlink control information sent by the second device, so that the first device can be based on the first narrowband index. The index determines the first narrowband.

In a possible implementation manner, the multiple resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and any element value contained in the second resource block quantity set is smaller than the third resource block The value of any element contained in the number set;

The second set of repetition times associated with the second resource block quantity set contains P elements, and the third set of repetition times associated with the third resource block quantity set contains Q elements, where P is less than or equal to Q, and P and Q are greater than A positive integer of 0. For example, the second resource block quantity set is {4,6}, the {4,6} associated repetition number set includes 4 elements, and the third resource block quantity set is {2}, {2} associated repetition number The set includes 2 elements. For downlink transmission, the power is not limited. The greater the number of resource blocks, the worse the channel quality, or the greater the number of resource blocks to improve robustness. When the number of resource blocks is large, the set of elements included in the number of repetitions The more the number of repetitions is, the larger the range of repetition times can be selected. Conversely, the smaller the number of resource blocks, the better the current channel quality. The fewer elements included in the repetition number set, the smaller the range of repetition times can be selected. In this way, the overhead of DCI can be saved.

In a possible implementation, the second resource block quantity set is {a}, the third resource block quantity set is {b,c}, and the set of associated repetition times includes 2 elements, {b,c } The associated set of repetition times includes 4 elements, where a is less than b, and a is less than c, and a, b, and c are all positive integers. For example, a is 2, b is 4, and c is 6.

In a possible implementation, the second resource block quantity set is {a}, the third resource block quantity set is {b,c}, and the set of associated repetition times includes 3 elements, {b,c } The associated set of repetition times includes 4 elements, where a is less than b, and a is less than c, and a, b, and c are all positive integers. For example, a is 2, b is 4, and c is 6.

In a possible implementation manner, the second resource block quantity set is {a}, the third resource block quantity set is {b}, the set of associated repetition times of {a} includes 2 elements, and the associated repetition of {b} The order set includes 4 elements, where a is less than b, and both a and c are positive integers. For example, a is 4 and b is 6.

In a possible implementation, the second resource block quantity set is {a, b}, and the third resource block quantity set is {c, d}, and the set of associated repetition times of {a, b} includes 2 elements, {c,d} The associated set of repetitions includes 4 elements, where a and b are both less than c, and a and b are both less than d, and a, b, c, and d are all positive integers. For example, a is 1, b is 2, c is 4, and d is 6.

In a possible implementation, the multiple resource block quantity sets further include a fourth resource block quantity set, the second resource block quantity set is {a}, the third resource block quantity set is {b}, and the fourth resource block quantity set The quantity set is {c,d}. {a} The associated repetition number set includes 1 element, {b} the associated repetition number set includes 2 elements, and the {c,d} associated repetition number set includes 4 elements. Among them, a is less than b, b is less than c, b is less than d, and a, b, c, and d are all positive integers. For example, a is 2, b is 4, c is 5, and d is 6.

In a possible implementation manner, the first device may receive fourth information sent by the second device through higher layer signaling (such as RRC or MAC CE) or physical layer signaling (such as DCI), and the fourth information indicates a resource block The offset of the starting position. For example, if the starting position of the resource block is 2, the fourth information can indicate that the starting position of the resource block is offset by 1, and the starting position of the resource block can be changed from 2 to 3. The fourth information indicates that the starting position of the resource block is offset by 2, and the starting position of the resource block can be changed from 2 to 4. The start position determined by the physical layer signaling can be changed by the offset of the start position indicated by the fourth information.

In a second aspect, a communication method is provided, including: a second device determines downlink control information, and the downlink control information is further used by the first device to determine a first number of repetitions and a first number of resource blocks in a first narrowband, wherein, The first resource block quantity is an element in the first resource block quantity set, the first resource block quantity set includes one or more resource block quantities, and the first resource block quantity set is a set of multiple resource block quantity sets, Each resource block quantity set in the resource block quantity set is associated with a set of repetition times, and the set of repetition times associated with different resource block quantity sets is different, the first repetition quantity is the first repetition quantity associated with the first resource block quantity set The elements in the collection. The downlink control information sent by the second device to the first device, the second device sends downlink information to the first device according to the downlink control information, the downlink information includes data and/or control information and/or reference signals and/or data channels, and data channels Including downlink data channel, data includes downlink data.

Optionally, the downlink control information is used to schedule multiple transmission blocks.

Optionally, the second device is a network device, and the first device is a terminal device.

In a possible implementation manner, the downlink control information includes first information and second information. The first information is used to indicate the start position of the resource block and/or the number of the first resource block, and the second information is used to repeat the The first repetition number is determined in the number set.

In a possible implementation manner, the first device has coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and the number of bits contained in the first information and the second information is 4 or 5.

In a possible implementation manner, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal device, and the number of bits included in the first information and the second information is 1 or 2 or 3.

In a possible implementation manner, the multiple resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and the element values contained in the second resource block quantity set are all smaller than the third resource block quantity set. The element value contained in the number set;

The second set of repetition times associated with the second resource block quantity set contains P elements, and the third set of repetition times associated with the third resource block quantity set contains Q elements, where P is less than or equal to Q, and P and Q are greater than A positive integer of 0.

In a possible implementation, the second resource block quantity set is {a, b}, the third resource block quantity set is {c, d}, and the set of associated repetition times of {a, b} includes 2 elements, {c,d} The associated set of repetitions includes 4 elements, where a and b are both less than c, and a and b are both less than d, and a, b, c, and d are all positive integers. For example, a is 1, b is 2, c is 4, and d is 6.

In a third aspect, a communication device is provided, which includes a unit for executing each step in the method in the first aspect or any possible implementation of the first aspect.

In a fourth aspect, a communication device is provided, which includes a unit for executing each step in the method in the second aspect or any possible implementation manner of the second aspect.

In a fifth aspect, a communication device is provided, which includes a transceiver, a memory, and a processor. Wherein, the transceiver, the memory, and the processor communicate with each other through an internal connection path, the memory is used to store instructions, and the processor is used to execute the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , And when the processor executes the instructions stored in the memory, the execution causes the processor to execute the first aspect or the method in any possible implementation manner of the first aspect.

In a sixth aspect, a communication device is provided, which includes a transceiver, a memory, and a processor. Wherein, the transceiver, the memory, and the processor communicate with each other through an internal connection path, the memory is used to store instructions, and the processor is used to execute the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , And when the processor executes the instructions stored in the memory, the execution causes the processor to execute the second aspect or the method in any possible implementation manner of the second aspect.

In a seventh aspect, a communication system is provided, which includes the device provided in the third aspect and the device provided in the fourth aspect; or

The system includes the device provided in the fifth aspect and the device provided in the sixth aspect.

In an eighth aspect, a computer program product is provided. The computer program product includes a computer program. When the computer program is executed by a processor, the computer program is used to execute the first aspect or the method in any possible implementation manner of the first aspect.

In a ninth aspect, a computer program product is provided. The computer program product includes a computer program. When the computer program is executed by a processor, the computer program is used to execute the second aspect or any possible implementation of the second aspect.

In a tenth aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program. When the computer program is executed, it is used to execute the first aspect or any possible implementation of the first aspect method.

In an eleventh aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. When the computer program is executed, it is used to execute the first aspect or any possible implementation of the first aspect Methods.

Description of the drawings

Figure 1 shows a schematic diagram of an application scenario of an embodiment of the present application.

Fig. 2 shows a schematic diagram of a communication method provided by an embodiment of the present application.

Fig. 3 shows a schematic diagram of another communication method provided by an embodiment of the present application.

Fig. 4 shows a schematic block diagram of a communication device provided by an embodiment of the present application.

Fig. 5 shows a schematic block diagram of another communication device provided by an embodiment of the present application.

Fig. 6 shows a schematic block diagram of another communication device provided by an embodiment of the present application.

detailed description

The technical solution in this application will be described below in conjunction with the drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, and broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, the future fifth generation (5th generation, 5G) system or new radio (NR), etc.

First, the application scenario of this application is introduced. Fig. 1 is a schematic diagram of a communication system suitable for this application.

The communication system includes a network device 110, a terminal device 120, a terminal device 130, and a terminal device 140. , Terminal device 150, terminal device 160, and terminal device 170, which communicate with network device 110 through electromagnetic waves.

In FIG. 1, the network device 110 may send control information and/or transmission blocks to one or more of the above-mentioned 6 terminal devices. The terminal device 150, the terminal device 160, and the terminal device 170 can also form a communication system. In the communication system, the terminal device 160 can send control information and/or transmit control information to one or two of the terminal device 150 and the terminal device 170. Block, that is to say, the embodiments of the present application can be applied not only to the communication between the terminal device and the network device, but also to the communication between the terminal device and the terminal device.

It should be noted that the multiple terminal devices shown in the embodiments of the present application are for a better and more comprehensive description of the embodiments of the present application, but should not cause any limitation to the embodiments of the present application. In actual applications, there may be only one or More than one terminal device.

In this application, the aforementioned multiple terminal devices may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication equipment, User agent or user device. The terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), with wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (PLMN) Terminal equipment, etc., this embodiment of the present application does not limit this.

The network device 110 may be a base station defined by 3GPP, for example, a base station (gNB) in a 5G communication system. The network device 110 may also be a non-3GPP (non-3GPP) access network device, such as an access gateway (AGW). The network device 110 may also be a relay station, an access point, a vehicle-mounted device, a wearable device, and other types of devices.

The communication system 100 is only an example, and the communication system applicable to the present application is not limited to this. For example, the number of network devices and terminal devices included in the communication system 100 may also be other numbers.

The following describes the terminal device as the first device and the network device 110 as the second device as an example. The terminal device can be any of the above-mentioned terminal devices, but the embodiment of the application is not limited to this, and the second device can also be a terminal device. .

It should be noted that the embodiment of the present application only uses sending downlink data as an example, but the embodiment of the present application is not limited to this, and the present application can also be used to send uplink data. Therefore, the embodiment of the present application only describes the following line control information as an example, but the embodiment of the present application may also be the control information sent between the terminal device and the terminal device.

It should be noted that, in this embodiment of the application, the second device sends the downlink data channel to the first device according to the downlink control information as an example, but the embodiment of this application is not limited to this. The second device may send the first device to the first device according to the downlink control information. The device sends data and/or control information and/or reference signals, etc.

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

FIG. 2 shows a communication method 200 provided by an embodiment of the present application, including:

S210: The first device receives the DCI sent by the second device. Optionally, DCI can also schedule one or more transmission blocks.

Optionally, the first device may be a terminal device and the second device may be a network device; or the first device may be a terminal device and the second device may also be a terminal device.

S220: The first device determines the first number of repetitions and the first number of resource blocks in the first narrowband according to the DCI, where the first number of resource blocks is an element in the first set of resource block numbers, and the first set of resource block numbers Including one or more resource block quantities, the first resource block quantity set is a set of multiple resource block quantity sets, each resource block quantity set in the multiple resource block quantity sets is associated with a set of repetition times, and different resources The set of repetition times associated with the block quantity set is different, and the first repetition quantity is an element in the first repetition quantity set associated with the first resource block quantity set.

It should be noted that, in the embodiment of this application, the first resource block quantity is used as the first narrowband resource block quantity description, but the embodiment of this application is not limited to this, and the first resource block quantity may not be the resource block quantity in the narrowband. .

It should be noted that different sets of repetition times may or may not have intersections. Different sets of repetition times include different numbers of elements and different sets of repetition times may have part of the same elements, or different sets of repetition times include different numbers of elements and different sets of repetition times do not have the same elements, or, The number of elements included in different sets of repetition times is the same, but the value of at least one element in different resource block sets is different. Optionally, the elements in the set of repetition times may be arranged in a certain order, for example, from small to large or from large to small.

Specifically, the second device may configure multiple length sets as follows: the second device configures through system information configuration or higher layer signaling such as RRC signaling or MAC CE signaling, or the second device may also configure through physical layer signaling Multiple length sets, for example, the physical layer signaling may be DCI.

Specifically, the second device may configure multiple sets of repetition times: the second device configures the system information or RRC signaling or media access control signaling MAC CE and other high-level signaling configuration, or the second device may also configure The physical layer signaling configures multiple length sets, for example, the physical layer signaling may be DCI.

The number of resource blocks can be called the number of resource blocks. The number of resource blocks can include the length of the resource block, that is, determine which resource blocks are used to transmit the downlink data channel. Which ones can be determined by the starting position of the resource block and the length of the resource block The resource block is used to transmit the downlink data channel; the number of resource blocks may also indicate the resource block index used to transmit the downlink data channel, so that the downlink data channel can be transmitted on the resource block indicated by the resource block index.

In some possible implementation manners, the first number of repetitions is the number of repetitions of downlink control information transmission and/or the number of repetitions of data channel transmission scheduled by the downlink control information, where the data channel includes a downlink data channel.

The number of resource blocks can include the length of the resource block, that is, determine which resource blocks are used to transmit the downlink data channel. The starting position of the resource block and the length of the resource block can be used to determine which resource blocks are used to transmit the downlink data channel; the number of resource blocks It can also indicate the resource blocks used to transmit the downlink data channel, so that the downlink data channel can be transmitted on these resource blocks.

Among them, S220 includes at least two implementation modes:

In the first implementation manner, the first device first determines the number of first resource blocks in the first narrowband according to DCI, or first determines the number of first resource blocks in the first narrowband and the start position of the resource blocks according to DCI; A device determines the first number of repetitions according to the number of the first resource blocks and the downlink control information.

Specifically, the downlink control information includes first information and second information. The first information is used to indicate the starting position of the resource block, or the first information is used to indicate the number of the first resource block, or the first information is used to indicate the resource. The block start position and the first resource block data, the second information is used to determine the first repetition number in the first set of repetition times; if the first information indicates the start position of the resource block, the first device can determine according to the first information The starting position of the resource block. If the first information indicates the first resource block quantity, the first device may determine the first resource block quantity according to the first information. If the first information indicates the resource block starting position and the first resource block quantity , The first device determines the number of the first resource block and the starting position of the resource block according to the first information.

After the first device determines the first resource block quantity, the first device may determine the first resource block quantity set in which the first resource block quantity is located according to the first resource block quantity, because the first resource block quantity corresponds to the first repetition quantity set , The first device may determine the first set of repetition times according to the first set of resource block numbers, and the second information is used by the first device to determine the first repetition times in the first set of repetition times. For example, the second information may indicate The order of the first repetition number in the first repetition number set, so that the first device can determine the first repetition number.

In the first implementation manner, for a terminal device with a better coverage level, for example, the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, the first information and the first information The total number of bits included in the two pieces of information is 4 or 5. That is, only 4 bits or 5 bits can be used to indicate the starting position of the resource block and/or the first resource block number and the first repetition number, thereby saving the overhead of the DCI. For a terminal device with a poor coverage level, for example, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, the number of bits contained in the first information and the second information is 1 Or 2 or 3. That is, only 1 bit or 1 bit or 3 bits can be used to indicate the starting position of the resource block and/or the number of the first resource block and the first number of repetitions, thereby saving the overhead of the DCI.

Therefore, in the embodiment of the present application, the resource block quantity set has a corresponding repetition number set, and the DCI overhead can be reduced through the association between the resource block quantity set and the repetition number set. For example, one bit in the DCI is used to indicate the first resource The first device can determine the first resource block number set after determining the first resource block number. The first device can determine the first set of repetition times according to the first resource block number set, and then use 1 bit in the DCI to indicate the first set of repetitions. An order of the number of repetitions in the first set of repetitions, so that the first device can determine the first number of repetitions in the first set of repetitions, thereby effectively reducing the overhead of the DCI.

That is, in the first implementation manner, it can be separately indicated, the first information is used to indicate the number of the first resource block, and the second information is used to determine the first repetition number in the first repetition number set, which can effectively reduce the DCI overhead .

In the second implementation manner, the downlink control information includes third information, and the third information is used to indicate the number of first resource blocks and the first number of repetitions, or the third information is used to indicate the starting position of the resource block and the number of first resource blocks And the first number of repetitions. The first device determines the number of first resource blocks and the first number of repetitions according to the third information, or the first device determines the number of first resource blocks, the starting position of the resource block, and the first number of repetitions according to the third information.

In a possible implementation manner, the multiple resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set (here the second resource block quantity set or the third resource block quantity set may be the aforementioned The first resource block quantity set), and any element value contained in the second resource block quantity set is less than any element value contained in the third resource block quantity set; the second number of repetitions associated with the second resource block quantity set The set contains P elements, and the third set of repetition times associated with the third resource block quantity set contains Q elements, where P is less than or equal to Q, and P and Q are positive integers greater than 0. For example, the second resource block quantity set is {4,6}, the {4,6} associated repetition number set includes 4 elements, and the third resource block quantity set is {2}, {2} associated repetition number The set includes 2 elements. For downlink transmission, the power is not limited. The greater the number of resource blocks, the worse the channel quality, or the greater the number of resource blocks to improve robustness. When the number of resource blocks is large, the set of elements included in the number of repetitions The more the number of repetitions is, the larger the range of repetition times can be selected. Conversely, the smaller the number of resource blocks, the better the current channel quality. The fewer elements included in the repetition number set, the smaller the range of repetition times can be selected. In this way, the overhead of DCI can be saved.

In the first implementation manner, for terminal devices with better coverage levels, for example, the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal devices, and the third information includes The number of bits in is 4 or 5, that is, only 4 bits or 5 bits can be used to indicate the starting position of the resource block and/or the first resource block number and the first repetition number, thereby saving the overhead of DCI. For terminal devices with poor coverage levels, for example, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, the number of bits contained in the third information is 1 or 2 or 3. . That is, only 1 bit or 1 bit or 3 bits can be used to indicate the starting position of the resource block and/or the first resource block quantity and the first repetition number, thereby saving the overhead of DCI.

In the above two implementations, the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and the first resource block number determined according to the downlink control information is {1, 2,3,4,5,6} elements in the proper subset, for example, the number of the first resource block is one element in {1,2,4,6}, etc. For example, the first number of repetitions is the number of repetitions of the data channel. The first number of repetitions may be elements in {n1, n2, n3, n4}, and n1, n2, n3, and n4 are positive integers.

The first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal device, and the number of first resource blocks determined according to downlink control information is elements in {4, 6}. For example, the first number of repetitions is the number of repetitions of the data channel. The first number of repetitions can be elements in {n1, n2, n3, n4, n5, n6, n7, n8}, where n1, n2, n3, n4, n5, n6, n7, n8 are positive integers

The first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal device, or coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and The first repetition count is the repetition count of the downlink control information, and the first repetition count is the element in {r1, r2, r3, r4}, where r1>r2>r3>r4, r1, r2, r3, r4 are positive integers .

The following examples describe the relationship between multiple resource block quantity sets and multiple repetition times sets.

In the first example, the second resource block quantity set is {a}, and the third resource block quantity set is {b,c}. The set of associated repetition times for {a} includes 2 elements, {b,c} is associated repetition The order set includes 4 elements, for example, as shown in Table 1, where a is less than b, and a is less than c, and a, b, and c are all positive integers.

For example, if a is 2, b is 4, and c is 6, take Table 2 as an example. That is, the third resource block number set {4, 6} composed of resource block numbers 4 and 6 corresponds to the third repetition number set, and the third repetition number set includes 4 elements, for example, {1, 4, 16, 32}. When the number of resource blocks is 4, it is assumed that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5, respectively. Then the starting position of the resource block can be 0 or 2. If the starting position is 0, it is the four RBs of 0, 1, 2, 3, and if the starting position is 2, it is 2, 3, 4, 5 These four RBs. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband. The second resource block quantity set {2} composed of the resource block quantity 2 corresponds to the second set of repetition times, and the second set of repetition times includes 2 elements, which may be {16, 32}, for example. When the number of resource blocks is 2, the starting position of the resource block can be {2, 4} or {0, 4} or {1, 4} or {0, 2}, assuming the starting position is 2, It is the two RBs of 2, 3; assuming the starting position is 4, it is the two RBs of 4 and 5; assuming the starting position is 1, then it is the two RBs of 1, and assuming the starting position is 0 , It is the two RBs of 0 and 1.

Optionally, when the number of resource blocks is 2, it corresponds to the second set of repetition times. The second set of repetition times includes 2 elements, and the 2 elements can be {n2,n4} or {n1,n3} or {n1,n2} , N1<n2<n3<n4, n1, n2, n3, n4 are positive integers. When the number of resource blocks is 4, the four elements included in the second set of repetition times may be {n1, n2, n3, n4}. When the number of resource blocks is 6, the four elements included in the second set of repetition times may be {n1, n2, n3, n4}.

When the number of resource blocks is 4, the starting position of the resource block can be designed to be 0 or 2, when the number of resource blocks is 2, the starting position of the resource block can be designed to be 4 or 0, and when the number of resource blocks is 6, the starting position of the resource block The starting position can only be designed as 0. The design of the starting position of the resource block needs to consider some factors. In the design process, if RB is 4, the starting position of the resource block can be designed as 0, so that the four of 0, 1, 2, 3 The RB is allocated to one device. If the RB is 2, the starting position of the resource block can be set to 4, so that the two RBs 4 and 5 can be allocated to another device, so that the two devices can be in a narrowband Transmission can improve resource utilization. In the design process, if the number of RBs is 4, the starting position of the resource block can be designed as 2, so that the four RBs 2, 3, 4, and 5 can be allocated to one device. If the RB is 2, The start position of the resource block can be set to 0, so that the two RBs 0 and 1 can be allocated to another device. In this way, the two devices can transmit in a narrow band, which can improve resource utilization.

Therefore, in Table 2, when the number of RBs is 4, the starting position of the resource block can be designed to be 0 or 2, and the set of repetition times can include 4 elements, so there are 8 combinations; when the number of RBs is 6, the resource block The starting position of the block can only be 0, the set of repetitions can include 4 elements, so there are 4 combinations; when the number of RBs is 2, the starting position of the resource block can be 0 or 4, and the set of repetitions can include 2. In this way, there are 4 combinations and a total of 8+4+4=16 combinations, which can be indicated by 4 bits. Of course, Table 2 is just an example. When the number of RBs is 2, the starting position of the resource block can also be an element in {2,4}, or the starting position of the resource block can be in {1,4} An element of, or the starting position of the resource block can be an element in {0,2}

It should be noted that in Table 2, when RB is 4 or 6, it corresponds to the same set of repetition times. In practical applications, different RB numbers can also correspond to different repetition times, that is, different resource block quantity sets correspond to Different sets of repetition times, different elements in the same resource block quantity set may correspond to the same set of repetition times or different sets of repetition times, which is not limited in the embodiment of the present application.

Optionally, Table 2 may apply to coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment.

Table 1

Table 2

In the second example, the second resource block quantity set is {a}, and the third resource block quantity set is {b,c}. The set of associated repetition times of {a} includes 3 elements, and the associated repetition of {b,c} The order set includes 4 elements. For example, as shown in Table 3, a is less than b, and a is less than c, and a, b, and c are all positive integers.

For example, if a is 2, b is 4, and c is 6, take Table 4 as an example. That is, the third resource block number set {4, 6} composed of resource block numbers 4 and 6 corresponds to the third repetition number set, and the third repetition number set includes 4 elements, for example, {1, 4, 16, 32}. Assume that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5 respectively. When the number of resource blocks is 4, the starting position of the resource block can be 0, 1, 2, and if the starting position is 0, it will be the four RBs of 0, 1, 2 and 3. If the starting position is 1, It is the four RBs of 1, 2, 3, and 4. If the starting position is 2, it is the four RBs of 2, 3, 4, and 5. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband. The second resource block quantity set {2} composed of the resource block quantity 2 corresponds to the second set of repetition times, and the second set of repetition times includes 3 elements, for example, {2, 16, 32}. When the number of resource blocks is 2, the starting position of the resource block can be the value in {0, 1, 2, 3, 4}, assuming that the starting position is 0, then it is the two RBs of 0, 1. If the starting position is 1, it is the two RBs 1, 2; assuming the starting position is 2, it is the two RBs 2, 3; assuming the starting position is 3, it is the two RBs of 3 and 4; The starting position is 4, then the two RBs of 4 and 5.

In Table 4, when the number of RBs is 4, the starting position of the resource block can be designed to be 0 or 1 or 2. The set of repetition times can include 4 elements, so there are 12 combinations; when the number of RBs is 6, the resource block The starting position of the block can only be 0, and the set of repetition times can include 4 elements, so there are 4 combinations; when the number of RBs is 2, the starting position of the resource block can be designed as {0, 1, 2, 3, 4}, the set of repetition times can include 3 elements, so there are 15 combinations, and there are a total of 12+4+15=31 combinations, which can be indicated by 5 bits.

It should be noted that in Table 4, when RB is 4 or 6, it corresponds to the same set of repetition times. In practical applications, different RB numbers can also correspond to different repetition times, that is, different resource block quantity sets correspond to Different sets of repetition times, different elements in the same resource block quantity set may correspond to the same set of repetition times or different sets of repetition times, which is not limited in the embodiment of the present application.

Optionally, Table 4 may be applicable to coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment.

table 3

Table 4

In the third example, the second resource block quantity set is {a}, the third resource block quantity set is {b}, the set of repetition times associated with {a} includes 2 elements, and the set of repetition times associated with {b} includes 4 Elements, as shown in Table 5, where a is less than b, and both a and b are positive integers. For example, a is 4 and b is 6.

For example, if a is 4 and b is 6, take Table 5 as an example. That is, the third resource block quantity set {6} composed of the resource block quantity 6 corresponds to the third repetition count set, and the third repetition count set includes 2 elements, which may be {16, 32}, for example. The second resource block quantity set {4} formed by the resource block quantity is 4 corresponds to the second set of repetition times, and the second set of repetition times includes 4 elements. Assume that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5 respectively. When the number of resource blocks is 4, the starting position of the resource block can be 0 or 1. If the starting position is 0, it is the four RBs of 0, 1, 2 and 3. If the starting position is 1, it is 1,2,3,4 these four RBs. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband.

Optionally, Table 6 may be applicable to coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment.

In Table 6, when the number of RBs is 4, the starting position of the resource block can be designed to be 0 or 1, and the set of repetition times can include 2 elements, so there are 4 combinations; when the number of RBs is 6, the resource block The starting position can only be 0, and the set of repetitions can include 4 elements, so there are 4 combinations. In this way, there are 4 combinations and a total of 4+4=8 combinations, which can be indicated by 3 bits.

table 5

Table 6

In the fourth example, the second resource block quantity set is {a, b}, and the third resource block quantity set is {c, d}. The set of associated repetition times includes 2 elements, {c, d } The associated set of repetitions includes 4 elements, as shown in Table 7, where a and b are both less than c, and a and b are both less than d, and a, b, c, and d are all positive integers.

For example, a is 1, b is 2, c is 4, and d is 6. Take Table 8 as an example. That is, the third resource block number set {4, 6} composed of resource block numbers 4 and 6 corresponds to the third repetition number set, and the third repetition number set includes 4 elements, for example, {1, 4, 16, 32}. When the number of resource blocks is 4, it is assumed that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5, respectively. Then the starting position of the resource block can be 0, and if the starting position is 0, it is the four RBs of 0, 1, 2, and 3. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband. The second resource block number set {1, 2} composed of resource block numbers 2 and 1 corresponds to the second set of repetition times, and the second set of repetition times includes 2 elements, which may be {16, 32}, for example. When the number of resource blocks is 2, the starting position of the resource block can be {2, 4} or {0, 4} or {1, 4} or {0, 2}, assuming that the starting position is 2. It is the two RBs of 2, 3; assuming the starting position is 4, it is the two RBs of 4 and 5; assuming the starting position is 1, then it is the two RBs of 1, and assuming the starting position is 0 , It is the two RBs of 0 and 1. When the number of resource blocks is 1, the starting position of the resource block can be 0 or 4. Assuming the starting position is 0, it is the two RBs of 0 and 1; assuming the starting position is 4, it is 4,5. Two RBs.

The design of the starting position of the resource block needs to consider some factors. For example, if the number of RBs is 4, try to make the starting position of the resource block start from 0 as much as possible, so that the four RBs of 0, 1, 2 and 3 can be allocated For a device, when the RB is 2, try to make the starting position of the resource block 4 as much as possible, so that the two RBs 4 and 5 can be allocated to another device, so that the two devices can transmit in a narrow band. Improve resource utilization.

Therefore, in Table 8, when the number of RBs is 4, the starting position of the resource block can be designed to be 0, and the set of repetition times can include 4 elements, so there are 4 combinations; when the number of RBs is 6, the resource block The starting position can only be 0, and the set of repetition times can include 4 elements, so there are 4 combinations; when the number of RBs is 2, the starting position of the resource block can be designed as {2,4}{0,4}{ One of 1,4}{0,2}, the set of repetition times can include 2 elements, so there are 4 combinations; when the number of RBs is 1, the starting position of the resource block is 0 or 4, and the set of repetition times It can include 2 elements, so there are 4 combinations, a total of 4+4+4+4=16 combinations, and 4 bits are needed to indicate. When the number of resource blocks is 4, the starting position of the resource block can be designed to be 0, when the number of resource blocks is 1, the starting position of the resource block can be designed to be 4, and when the number of resource blocks is 6, the starting position of the resource block is only Can be designed as 0. The design of the starting position of the resource block needs to consider some factors. In the design process, if RB is 4, the starting position of the resource block can be designed as 0, so that the four of 0, 1, 2, 3 RB is allocated to one device. If RB is 1, the starting position of the resource block can be set to 4, so that 4RB can be allocated to another device. In this way, two devices can transmit in a narrow band, which can improve resource efficiency. Utilization rate. In the design process, if the number of RBs is 4, the starting position of the resource block can be designed as 2, so that the four RBs 2, 3, 4, and 5 can be allocated to one device. If the RB is 1, Then the starting position of the resource block can be set to 0, so that the RB of 0 can be allocated to another device. In this way, the two devices can transmit in a narrow band, which can improve resource utilization.

It should be noted that in Table 8, RB is 4 or 6 corresponds to the same set of repetitions, and RB is 1 or 2 corresponds to the same set of repetitions. In practical applications, different RB numbers can also correspond to different The number of repetitions, that is, different sets of resource block numbers correspond to different sets of repetition times, and different elements in the same resource block number set can correspond to the same set of repetition times or different sets of repetition times, which is not limited in this embodiment of the application.

Optionally, Table 8 may be applicable to coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment.

Table 7

Table 8

In the fifth example, multiple resource block quantity sets also include a fourth resource block quantity set. The second resource block quantity set is {a}, the third resource block quantity set is {b}, and the fourth resource block quantity set is { c,d}. {a} The associated repetition number set includes 1 element, {b} the associated repetition number set includes 2 elements, and the {c,d} associated repetition number set includes 4 elements. As shown in Table 9, where a is less than b, b is less than c, b is less than d, and a, b, c, and d are all positive integers.

For example, a is 2, b is 4, c is 5, and d is 6. Take Table 10 as an example. That is, the fourth resource block quantity set {5, 6} composed of resource block quantities of 5 and 6 corresponds to the fourth set of repetition times, and the fourth set of repetition times includes 4 elements, which may be {1, 4, 16, 32}, for example. The third resource block quantity set {4} composed of resource block quantity 4 corresponds to the third repetition number set, and the third repetition number set includes 2 elements, which may be {16, 32}, for example. The second resource block quantity set {2} composed of the resource block quantity is 2 corresponds to the second set of repetition times, and the second set of repetition times includes 1 element. Assume that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5 respectively. When the number of resource blocks is 4, the starting position of the resource block can be 0 or 1. If the starting position is 0, it is the four RBs of 0, 1, 2 and 3. If the starting position is 1, it is 1,2,3,4 these four RBs. When the number of resource blocks is 5, the starting position of the resource block is 0. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband. When the number of resource blocks is 2, the starting position of the resource block can be 0,1,2,4, if the starting position is 0, it is the two RBs of 0,1; if the starting position is 1, it is The two RBs 1, 2; if the starting position is 2, the two RBs 2, 3; if the starting position is 4, the two RBs 4 and 5.

Optionally, Table 10 may be applicable to coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment.

In Table 10, when the number of RBs is 2, the starting position of the resource block can be designed to be 0 or 1 or 2 or 4. The set of repetition times can include 1 element, so there are 4 combinations; when the number of RBs is 4 , The starting position of the resource block can be designed to be 0 or 1, the set of repetition times can include 2 elements, so there are 4 combinations; when the number of RBs is 6, the starting position of the resource block can only be 0, and the set of repetition times It can include 4 elements, so there are 4 combinations; when the number of RBs is 5, the starting position of the resource block can be designed to be 0, and the set of repetition times can include 4 elements. In this way, there are 4 combinations and a total of 4+4+4+4=16 combinations, which can be indicated by 4 bits.

Table 9

Table 10

In the sixth example, the second resource block quantity set is {a}, and the third resource block quantity set is {b}. {a} The associated second set of repetitions includes 4 elements, and {b} the associated third set of repetitions includes 4 elements. As shown in Table 11, where a is less than b, and both a and b are positive integers.

For example, if a is 4 and b is 6, take Table 12 as an example. That is, the second resource block quantity set {4} composed of the resource block quantity 4 corresponds to the second repetition number set, and the second repetition number set includes 4 elements, which may be {1,4,16,32}, for example. The third resource block quantity set {6} composed of the resource block quantity 6 corresponds to the third repetition number set, and the third repetition number set includes 4 elements, which may be {4, 16, 32, 48}, for example. Assume that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5 respectively. When the number of resource blocks is 4, the starting position of the resource block can be 0 or 1 or 2. If the starting position is 0, it is the four RBs of 0, 1, 2 and 3. If the starting position is 1, The four RBs are 1, 2, 3, and 4. If the starting position is 2, it is the four RBs 2, 3, 4, and 5. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband.

Optionally, Table 12 may be applicable to coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment.

In Table 12, when the number of RBs is 4, the starting position of the resource block can be designed to be 0, 1 or 2, and the set of repetition times can include 4 elements, so there are 12 combinations; when the number of RBs is 6, the resource block The starting position of the block can only be 0, and the set of repetition times can include 4 elements, so there are 4 combinations. In this way, there are 4 combinations and a total of 12+4=16 combinations, which can be indicated by 4 bits.

The second set of repetitions and the third set of repetitions in Tables 11 and 12 include the same number of elements, but there is at least one element difference between the second set of repetitions and the third set of repetitions, that is, the two sets of repetitions belong to A collection of different repetition times.

Table 11

Table 12

In the seventh example, the second set of repetitions associated with the number of resource blocks a includes 4 elements, and the second set of repetitions associated with the number of resource blocks b also includes 4 elements. As shown in Table 13, where a is less than b, and both a and b are positive integers.

Optionally, for coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment, a and b are elements in the proper subset of {1,2,3,4,5,6}. Optionally, the elements in the set of repetition times corresponding to a and b are less than or equal to 4. For example, a is 4, b is 6

Optionally, for coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, a and b are elements in a proper subset or subset of {4, 6}. Optionally, the number of repetitions corresponding to a and b is less than or equal to 8.

For example, if a is 4 and b is 6, take Table 13 as an example. That is, the second set of repetition times corresponding to the number of resource blocks of 4 includes 4 elements, which may be {1, 4, 16, 32}, for example. The number of resource blocks 6 also corresponds to the second set of repetition times, for example, {1, 4, 16, 32}. Assume that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5 respectively. When the number of resource blocks is 4, the starting position of the resource block can be 0 or 1 or 2. If the starting position is 0, it is the four RBs of 0, 1, 2 and 3. If the starting position is 1, The four RBs are 1, 2, 3, and 4. If the starting position is 2, it is the four RBs 2, 3, 4, and 5. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband.

Optionally, Table 13 may be applicable to coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment.

In Table 13, when the number of RBs is 4, the starting position of the resource block can be designed to be 0 or 1 or 2, and the set of repetition times can include 4 elements, so there are 12 combinations; when the number of RBs is 6, the resource block The starting position of the block can only be 0, and the set of repetition times can include 4 elements, so there are 4 combinations. In this way, there are 4 combinations and a total of 12+4=16 combinations, which can be indicated by 4 bits. For example, the control information includes a third field, and the third field includes 4 bits. The 4 bits of the third field can indicate that the number of the first resource block, the starting position of the resource block, and the first number of repetitions are among the 16 combinations What kind of combination.

The number of resource blocks 4 or 6 in Table 13 corresponds to the same second set of repetition times. For example, when the number of resource blocks is 4 or 6, the four elements included in the second set of repetition times may be {n1, n2, n3, n4} n1, n2, n3, n4 are positive integers.

Optionally, the control information includes a first field and a second field. The first field includes 2 bits. The first field is used to indicate the number of the first resource block and the start position of the resource block. The second field includes 2 bits. The second field is used to indicate the first number of repetitions. Taking Table 13 as an example, the first field is 2 bits, and the first field is used to indicate the start position of 3 possible resource blocks corresponding to the number of resource blocks of 4, and the start position of 1 resource block corresponding to the number of resource blocks of 6, then There are 4 combinations of the number of resource blocks and the starting position of the resource blocks, that is, 2 bits can indicate which of these 4 combinations the resource is allocated. The second field is 2 bits, and the second set of repetition times includes 4 elements, and 2 bits are needed to indicate which element of the four elements the first repetition number is.

Table 13

In the embodiment of this application, since the downlink power is not limited, the terminal device with limited coverage may not support all the resource block numbers, for example, only supports the sub-types in {1,2,3,4,5,6} The number of concentrated resource blocks. For example, in the seventh example, since the downlink power is not limited, the terminal device with limited coverage may not support the situation that the number of resource blocks is small. For example, the terminal device with the first coverage may only support The number of resource blocks is 4 and 6, so that in the process of resource allocation, the overhead of DCI can be saved. In addition, terminal devices with limited coverage can only support common repetition times, which can also save DCI overhead.

In the eighth example, the second set of number of resource blocks {a} formed by the number a of resource blocks and the associated second set of repetition times includes 2 elements. As shown in Table 14, where a is a positive integer.

Optionally, for coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, a can be an element in {4, 6}, for example, a is 6.

For example, if a is 6, take Table 15 as an example. The set of repetition times corresponding to the number of resource blocks of 6 includes two elements. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband.

In Table 15, when the number of RBs is 6, the starting position of the resource block can only be 0, and the set of repetition times can include 2 elements, so there are 2 combinations, and 1 bit is needed to indicate.

Table 14

Table 15

In the ninth example, the second set of repetition times associated with the second set of resource block numbers {a} composed of the number a of resource blocks includes 4 elements. As shown in Table 16, where a is a positive integer.

For example, if a is 6, take Table 17 as an example. The set of repetition times corresponding to the number of resource blocks of 6 includes four elements. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband.

In Table 17, when the number of RBs is 6, the starting position of the resource block can only be 0, and the set of repetition times can include 4 elements, so there are 4 combinations, and 2 bits are needed to indicate.

Table 16

Table 17

In the tenth example, the second set of repetition times associated with the second set of resource block numbers {a} composed of the number a of resource blocks includes 8 elements. As shown in Table 18, where a is a positive integer.

For example, if a is 6, take Table 19 as an example. The set of repetition times corresponding to the number of resource blocks of 6 includes four elements. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband.

In Table 19, when the number of RBs is 6, the starting position of the resource block can only be 0, and the set of repetition times can include 8 elements, so there are 8 combinations, and 3 bits are needed to indicate.

Table 18

Table 19

In the eleventh example, the second resource block quantity set is {a}, the third resource block quantity set is {b}, the set of associated repetitions of {a} includes 2 elements, and the set of associated repetitions of {b} includes Two elements, as shown in Table 20, where a is less than b, and both a and b are positive integers. For example, a is 4 and b is 6.

For example, if a is 4 and b is 6, take Table 21 as an example. That is, the third resource block quantity set {6} composed of the resource block quantity 6 corresponds to the third repetition count set, and the third repetition count set includes 2 elements. The second resource block quantity set {4} formed by the resource block quantity is 4 corresponds to the second set of repetition times, and the second set of repetition times includes 2 elements. Assume that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5 respectively. When the number of resource blocks is 4, the starting position of the resource block can be 0, and if the starting position is 0, it is the four RBs of 0, 1, 2, and 3. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband.

Optionally, Table 21 may be applicable to coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment.

In Table 21, when the number of RBs is 4, the starting position of the resource block can be designed to be 0, and the set of repetition times can include 2 elements, so there are 2 combinations; when the number of RBs is 6, the starting position of the resource block The position can only be 0, and the set of repetitions can include 2 elements, so there are 2 combinations. In this way, there are a total of 2+2=4 combinations, which can be indicated by 2 bits.

Table 20

Table 21

In the twelfth example, the second resource block quantity set is {a}, the third resource block quantity set is {b}, the set of associated repetition times of {a} includes 2 elements, and the set of associated repetition times of {b} includes 4 elements, as shown in Table 22, where a is less than b, and both a and b are positive integers. For example, a is 4 and b is 6.

For example, if a is 4 and b is 6, take Table 23 as an example. That is, the third resource block quantity set {6} composed of the resource block quantity 6 corresponds to the third repetition number set, which includes 4 elements. The second resource block quantity set {4} formed by the resource block quantity is 4 corresponds to the second set of repetition times, and the second set of repetition times includes 2 elements. Assume that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5 respectively. When the number of resource blocks is 4, the starting position of the resource block can be 0 or 1. If the starting position is 0, it is the four RBs of 0, 1, 2 and 3; if the starting position is 1, it is 1,2,3,4 these four RBs. When the number of resource blocks is 6, the starting position of the resource block can only be 0, which is the RB on the entire narrowband.

Optionally, Table 23 may be applicable to coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment.

In Table 23, when the number of RBs is 4, the start position of the resource block can be designed to be 0 or 1, and the set of repetition times can include 2 elements, so there are 4 combinations; when the number of RBs is 6, the resource block The starting position can only be 0, and the set of repetitions can include 4 elements, so there are 4 combinations. In this way, there are a total of 4+4=8 combinations, which can be indicated by 3 bits.

Table 22

Table 23

It should be noted that the starting position in the preceding table is {a, b}, and the second device can indicate which value in {a, b} the starting position is through DCI.

S230: The first device receives the downlink channel sent by the second device according to the first number of repetitions and the first number of resource blocks in the first narrowband. The downlink information includes data and/or control information and/or reference signals and/or data channels, where the data channel includes the downlink data channel, and the data includes the downlink data. In this way, the second device can determine the resource block for sending the downlink data channel according to the DCI, and the first device can also determine the starting position of the resource block and the number of the first resource block according to the DCI, and the first device can determine the starting position of the resource block and The first number of resource blocks can determine which resource blocks are used to receive the downlink data channel. This can ensure normal reception and transmission of the downlink data channel.

It should be noted that in the embodiment of the present application, the first narrowband may include 6 resource blocks (resource blocks, RB). If the number of the first resource blocks is 6, then the DCI does not need to indicate the starting position of the resource block. If the number of the first resource block is less than 6, for example, 4, the starting position of the resource block needs to be indicated, for example, which resource block to start from, and 4 resource blocks. Assume that the numbers of the 6 RBs in the first narrowband are 0, 1, 2, 3, 4, and 5 respectively.

Optionally, the number of the first resource block is 1, then the starting RB number of 1 RB in the narrowband is {0,3} or {0,1} or {0,2} or {4,5} or { 0,4}.

Optionally, the number of the first resource block is 2, then the starting RB number of the two RBs in the narrowband is {0, 2, 4}, or {1, 4}, or {1, 3, 5} value.

Optionally, if the number of the first resource block is 4, the starting RB number of the 4 RBs in the narrowband is 0.

Optionally, the number of the first resource block is 6, and the starting RB number of the 6 RBs in the narrowband is 0.

In a possible implementation manner, the first device may receive fourth information sent by the second device through high-layer signaling, the fourth information indicating the offset of the start position of the resource block, for example, if the start position of the resource block If it is 2, the fourth information can indicate that the start position of the resource block is offset by 1, and the start position of the resource block can be changed from 2 to 3. If the fourth information indicates that the start position of the resource block is offset by 2, the resource block The starting position can then be changed from 2 to 4. The start position determined by the physical layer signaling can be changed by the offset of the start position indicated by the fourth information.

FIG. 3 shows a communication method 300 provided by an embodiment of the present application, including:

S310. The second device determines the DCI, where the DCI is used by the first device to determine the first number of repetitions and the first resource block quantity in the first narrowband, where the first resource block quantity is an element in the first resource block quantity set , The first resource block quantity set includes one or more resource block quantities, the first resource block quantity set is a set of multiple resource block quantity sets, and each resource block quantity set in the multiple resource block quantity sets is associated with one Sets of repetition times, and different sets of resource block quantity are associated with different sets of repetition times. The first repetition quantity is an element in the first set of repetition times associated with the first resource block quantity set.

As an optional embodiment, the first number of repetitions is the number of repetitions of downlink control information transmission and/or the number of repetitions of data channel transmission scheduled by downlink control information, where the data channel includes a downlink data channel.

As an optional embodiment, the downlink control information includes first information and second information. The first information is used to indicate the starting position of the resource block and/or the number of the first resource block, and the second information is used to set the first repetition count. Determine the first number of repetitions.

As an optional embodiment, the downlink control information includes third information, the third information is used to indicate the number of the first resource block and the first repetition number, or the third information is used to indicate the start position of the resource block, the first resource block Number and number of first repetitions.

The multiple resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and the element values contained in the second resource block quantity set are all smaller than the element values contained in the third resource block quantity set;

As an optional embodiment, the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and the number of bits included in the first information and the second information is 4 or 5; Alternatively, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal device, and the number of bits included in the first information and the second information is 1 or 2 or 3.

As an optional embodiment, the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and the number of bits contained in the third information is 4 or 5; or, the first device For coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, the third information contains a total of 1 or 2 or 3 bits

S320: The second device sends DCI to the first device.

S330: The second device sends downlink information to the first device according to the DCI. The downlink information includes data and/or control information and/or reference signals and/or data channels, where the data channel includes the downlink data channel, and the data includes the downlink data.

For a detailed description of the method 300, refer to the method 200, and in order to avoid repetitive description, it will not be detailed here.

The above describes the communication method provided by this application mainly from the perspective of the first device. The processing procedure of the second device corresponds to the processing procedure of the first device. For example, the first device receives information from the second device, which means that the first device receives information from the second device. The second device sent the information; the first device sent the information to the second device, which means that the second device received the information from the first device. Therefore, even if the processing procedure of the second device is not explicitly stated in the above individual places, those skilled in the art can clearly understand the processing procedure of the second device based on the processing procedure of the first device.

The communication method provided by the embodiment of the present application is described in detail above with reference to Figs. 1 to 3, and the communication device provided by the embodiment of the present application is described in detail below with reference to Figs. 4 to 6.

FIG. 4 shows a schematic block diagram of a communication device 400 provided by an embodiment of the present application. The device 400 may correspond to the first device described in the foregoing method, or may correspond to a chip or component of the first device, and the device 400 Each module or unit may be used to execute each action or processing procedure performed by the first device in the foregoing method. As shown in FIG. 4, the apparatus 400 for transmitting data may include a transceiver unit 410 and a processing unit 420.

The transceiver unit 410 is configured to receive downlink control information sent by the second device;

The processing unit 420 is configured to determine the first number of repetitions and the first number of resource blocks in the first narrowband according to the downlink control information, where the first resource block number is an element in the first resource block number set, and the first resource The block quantity set includes one or more resource block quantities, the first resource block quantity set is a set of multiple resource block quantity sets, and each resource block quantity set in the multiple resource block quantity sets is associated with a repetition number set, Moreover, different sets of resource block quantity are associated with different sets of repetition times, and the first repetition quantity is an element in the first set of repetition times associated with the first resource block quantity set;

The transceiver unit 410 is further configured to receive the downlink data channel sent by the second device according to the first resource block quantity and the first repetition number.

As an optional embodiment, the first number of repetitions is the number of repetitions of downlink control information transmission and/or the number of repetitions of downlink data channel transmission scheduled by downlink control information.

As an optional embodiment, the processing unit 420 is further configured to determine the starting position of the resource block in the first narrowband according to the downlink control information.

As an optional embodiment, the downlink control information includes first information and second information. The first information is used to indicate the starting position of the resource block and/or the number of the first resource block, and the second information is used to set the first repetition count. The processing unit 420 is specifically configured to determine the starting position of the resource block and/or the number of the first resource block according to the first information; the processing unit 420 is specifically configured to: the first device according to the second information and the first A set of repetitions determines the first repetition.

As an optional embodiment, the multiple resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and the element values contained in the second resource block quantity set are all smaller than those contained in the third resource block quantity set Element value; the second set of repetitions associated with the second resource block quantity set contains P elements, and the third set of repetitions associated with the third resource block quantity set contains Q elements, where P is less than or equal to Q, P and Q is a positive integer greater than zero.

As an optional embodiment, the apparatus 400 has coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal equipment, and the total number of bits contained in the first information and the second information is 4 or 5; or , The apparatus 400 has coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, and the number of bits included in the first information and the second information is 1 or 2 or 3.

As an optional embodiment, the apparatus 400 has coverage enhancement level 0, or is coverage enhancement level 1, or is a terminal device in coverage enhancement mode A, and the number of bits contained in the third information is 4 or 5; or, the apparatus 400 is Coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, the third information contains 1 or 2 or 3 bits in total.

It should be understood that, for the specific process of each unit in the apparatus 400 performing the foregoing corresponding steps, please refer to the foregoing description in conjunction with the first device in the method embodiment. For the sake of brevity, details are not repeated here.

FIG. 5 shows a schematic block diagram of a communication device 500 provided by an embodiment of the present application. The device 500 may correspond to the second device described in the above method, or may correspond to the chip or component of the second device, and the device 500 Each module or unit may be used to execute each action or processing procedure performed by the second device in the foregoing method. As shown in FIG. 5, the apparatus 500 for transmitting data may include a processing unit 510 and a transceiver unit 520.

The processing unit 510 is configured to determine downlink control information, where the downlink control information is used by the first device to determine the first number of repetitions and the first number of resource blocks in the first narrowband, where the first resource block number is the first resource block number An element in the set, the first resource block quantity set includes one or more resource block quantities, the first resource block quantity set is a set of multiple resource block quantity sets, and each resource in the multiple resource block quantity sets The block quantity set is associated with a set of repetition times, and different resource block quantity sets are associated with different repetition times sets, and the first repetition times are elements in the first repetition times set associated with the first resource block quantity sets;

The transceiver unit is configured to send downlink control information to the first device;

The transceiver unit is further configured to send a downlink data channel to the first device according to the downlink control information.

As an optional embodiment, the multiple resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and the element values contained in the second resource block quantity set are all smaller than the third resource block quantity set Contained element value;

As an optional embodiment, the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and the number of bits contained in the third information is 4 or 5; or, the first device For coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal equipment, the third information contains 1 or 2 or 3 bits in total.

It should be understood that, for the specific process of each unit in the apparatus 500 performing the above corresponding steps, please refer to the foregoing description in conjunction with the second device in the method embodiment, and for the sake of brevity, it will not be repeated here.

The apparatus 400 of each of the foregoing solutions has the function of implementing the corresponding steps performed by the first device in the foregoing method, and the apparatus 50 of each of the foregoing solutions has the function of implementing the corresponding steps performed by the second device in the foregoing method; the functions may be implemented by hardware or Implement the corresponding software through hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the sending unit can be replaced by a transmitter, the receiving unit can be replaced by a receiver, and other units, such as a determining unit, can be replaced by a processor, and each method is executed separately Transceiving operations and related processing operations in the embodiment.

In a specific implementation process, the processor can be used to perform, for example, but not limited to, baseband related processing, and the transceiver can be used to perform, for example, but not limited to, radio frequency transceiving. The above-mentioned devices may be respectively arranged on independent chips, or at least partly or fully arranged on the same chip. For example, the processor can be further divided into an analog baseband processor and a digital baseband processor. The analog baseband processor and the transceiver can be integrated on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be combined with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) Integrated on the same chip. Such a chip may be called a system on chip (SOC). Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the specific needs of product design. The embodiment of the present application does not limit the specific implementation form of the foregoing device.

It can be understood that the processor involved in the foregoing embodiments can execute program instructions through a hardware platform with a processor and a communication interface to implement the functions involved in any design of the foregoing embodiments of this application, based on this As shown in FIG. 6, an embodiment of the present application provides a schematic block diagram of a communication device 600. The device 600 includes a processor 610, a transceiver 620, and a memory 630. The processor 610, the transceiver 620, and the memory 630 communicate with each other through an internal connection path. The memory 630 is used to store instructions, and the processor 610 is used to execute instructions stored in the memory 630 to control the transceiver 620 to send signals and / Or receive signal.

Wherein, in a possible implementation manner, if the apparatus 600 is the first device, the transceiver 620 is configured to receive downlink control information sent by the second device; the processor 610 is configured to determine the first device according to the downlink control information. The number of repetitions and the first number of resource blocks in the first narrowband, where the first resource block number is an element in a first resource block number set, and the first resource block number set includes one or more resources The number of blocks, the first set of resource block numbers is a set of a plurality of resource block number sets, and each resource block number set in the plurality of resource block number sets is associated with a set of repetition times, and different resource block numbers The sets of repetition times associated with the sets are different, and the first repetition times are elements in the first set of repetition times associated with the first resource block quantity set; the transceiver 620 is further configured to perform according to the first resource block quantity and Receiving the downlink data channel sent by the second device at the first number of repetitions.

Wherein, in a possible implementation manner, if the apparatus 600 is the second device, the processor 610 is used to determine downlink control information, and the downlink control information is used by the first device to determine the first number of repetitions and the first narrowband The first resource block quantity within the first resource block quantity, wherein the first resource block quantity is an element in a first resource block quantity set, the first resource block quantity set includes one or more resource block quantities, and the first resource block quantity A resource block quantity set is a set of a plurality of resource block quantity sets, each resource block quantity set in the plurality of resource block quantity sets is associated with a set of repetition times, and a set of repetition times associated with different resource block quantity sets Different, the first repetition count is an element in the first repetition count set associated with the first resource block quantity set; the transceiver 620 is configured to send the downlink control information to the first device; the transceiver 620 is also configured to The downlink control information sends a downlink data channel to the first device

It should be understood that the apparatus in FIG. 4 or the apparatus in FIG. 5 in the embodiment of the present application may be implemented by the apparatus 600 in FIG. 6, and may be used to execute the steps corresponding to the first device and the second device in the foregoing method embodiment. And/or process.

It can be understood that the methods, processes, operations, or steps involved in the various designs described in the embodiments of the present application can be implemented in a one-to-one correspondence manner through computer software, electronic hardware, or a combination of computer software and electronic hardware. Corresponding realization. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. For example, considering the good versatility, low cost, software and hardware decoupling, etc., they can be implemented by executing program instructions, for example , Considering system performance and reliability, etc., it can be realized by using a dedicated circuit. Ordinary technicians can use different methods for each specific application to implement the described functions, which are not limited here.

According to the method provided in the embodiments of the present application, the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes the method in the above embodiment . The various embodiments in this application can also be combined with each other.

According to the method provided in the embodiments of the present application, the present application also provides a computer-readable medium with a program code stored in the computer-readable interpretation, and when the program code runs on a computer, the computer executes the method in the foregoing embodiment .

In the embodiments of the present application, it should be noted that the foregoing method embodiments in the embodiments of the present application may be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. There are many different types of RAM, such as static RAM (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate Synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and direct memory bus random memory Take memory (direct rambus RAM, DR RAM).

It should be understood that, in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application. The implementation process constitutes any limitation.

The terms "first" and "second" appearing in this application are only used to distinguish different objects, and "first" and "second" themselves do not limit the actual order or function of the objects they modify. Any embodiment or design solution described as "exemplary", "example", "for example", "optionally" or "in certain implementations" in this application should not be construed as being better than other implementations. Examples or design solutions are more preferred or more advantageous. To be precise, these words are used to present related concepts in a concrete way.

Various messages/information/equipment/network elements/systems/devices/operations that may appear in this application have been assigned names. It is understandable that these specific names do not constitute a reference to related objects. Limited, the assigned name can be changed according to factors such as the scene, context, or usage habits. The understanding of the technical meaning of the technical terms in this application should be determined mainly from the functions and technical effects embodied/implemented in the technical solution .

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product may include one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic disk), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that it comprises:

The first device receives the downlink control information sent by the second device;

The first device determines a first number of repetitions and a first number of resource blocks in a first narrowband according to the downlink control information, where the first number of resource blocks is an element in a first set of resource block numbers, The first resource block quantity set includes one or more resource block quantities, the first resource block quantity set is a set of a plurality of resource block quantity sets, and each resource in the plurality of resource block quantity sets The block quantity set is associated with a set of repetition times, and different resource block quantity sets are associated with different repetition times sets, and the first repetition times are elements in the first repetition times set associated with the first resource block quantity sets;

The first device receives the downlink data channel sent by the second device according to the first resource block quantity and the first repetition count.
The method according to claim 1, wherein the first number of repetitions is the number of repetitions of the downlink control information transmission and/or the number of repetitions of the downlink data channel transmission scheduled by the downlink control information.
The method according to claim 1 or 2, wherein the method further comprises:

The first device determines the starting position of the resource block in the first narrowband according to the downlink control information.
The method according to any one of claims 1 to 3, wherein the downlink control information includes first information and second information, and the first information is used to indicate a starting position of a resource block and/or The first resource block quantity, and the second information is used to determine the first repetition quantity in the first repetition quantity set;

The first device determining the starting position of the resource block in the first narrowband and/or the number of the first resource block according to the downlink control information includes:

Determining, by the first device, the starting position of the resource block and/or the number of the first resource block according to the first information;

The determining, by the first device, the first number of repetitions according to the downlink control information includes:

The first device determines the first repetition number according to the second information and the first repetition number set.
The method according to any one of claims 1 to 3, wherein the downlink control information includes third information, and the third information is used to indicate the number of the first resource block and the first repetition Or, the third information is used to indicate the starting position of the resource block, the number of the first resource block, and the first repetition number.
The method according to any one of claims 1 to 5, characterized in that:

The multiple resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and the element values contained in the second resource block quantity set are all smaller than the element values contained in the third resource block quantity set;

The second set of repetitions associated with the second set of resource block numbers includes P elements, and the third set of repetitions associated with the third set of resource block numbers includes Q elements, where P is less than or equal to Q , P and Q are positive integers greater than 0.
The method according to claim 4, wherein the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, the first information and the second information The total number of bits included is 4 or 5; or, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal device, and the first information and the second information share the same The number of bits included is 1 or 2 or 3.
The method according to claim 5, wherein the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and the bits contained in the third information The number is 4 or 5; or, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal device, and the number of bits contained in the third information is 1 or 2. Or 3.
A communication method, characterized in that it comprises:

The second device determines downlink control information, where the downlink control information is used by the first device to determine the first number of repetitions and the first number of resource blocks in the first narrowband, where the first number of resource blocks is the first resource block An element in a quantity set, the first resource block quantity set includes one or more resource block quantities, the first resource block quantity set is a set of a plurality of resource block quantity sets, the multiple resource blocks Each resource block quantity set in the quantity set is associated with a set of repetition times, and the sets of repetition times associated with different resource block quantity sets are different, and the first repetition times are the first repetition times associated with the first resource block quantity set Elements in the collection;

Sending, by the second device, the downlink control information to the first device;

The second device sends a downlink data channel to the first device according to the downlink control information.
The method according to claim 9, wherein the first number of repetitions is the number of repetitions of the downlink control information transmission and/or the number of repetitions of the downlink data channel transmission scheduled by the downlink control information.
The method according to claim 9 or 10, wherein the downlink control information includes first information and second information, and the first information is used to indicate a starting position of a resource block and/or the first resource The number of blocks, and the second information is used to determine the first number of repetitions in the set of the first number of repetitions.
The method according to claim 9 or 10, wherein the downlink control information includes third information, and the third information is used to indicate the number of the first resource blocks and the first number of repetitions, or, The third information is used to indicate the starting position of the resource block, the number of the first resource block, and the first number of repetitions.
The method according to any one of claims 9 to 12, characterized in that:

The plurality of resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and the element values contained in the second resource block quantity set are all smaller than the elements contained in the third resource block quantity set value;

The second set of repetitions associated with the second set of resource block numbers includes P elements, and the third set of repetitions associated with the third set of resource block numbers includes Q elements, where P is less than or equal to Q , P and Q are positive integers greater than 0.
The method according to claim 11, wherein the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and the first information and the second information The total number of bits included is 4 or 5; or, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal device, and the first information and the second information share the same The number of bits included is 1 or 2 or 3.
The method according to claim 12, wherein the first device is coverage enhancement level 0, or coverage enhancement level 1, or coverage enhancement mode A terminal device, and the number of bits contained in the third information 4 or 5; or, the first device is coverage enhancement level 2, or coverage enhancement level 3, or coverage enhancement mode B terminal device, and the number of bits contained in the third information is 1 or 2 or 3.
A communication device, characterized by comprising:

A transceiver unit, configured to receive downlink control information sent by the second device;

A processing unit, configured to determine a first number of repetitions and a first number of resource blocks in a first narrowband according to the downlink control information, where the first number of resource blocks is an element in a first set of resource block numbers, The first resource block quantity set includes one or more resource block quantities, the first resource block quantity set is a set of a plurality of resource block quantity sets, and each resource in the plurality of resource block quantity sets The block quantity set is associated with a set of repetition times, and different resource block quantity sets are associated with different repetition times sets, and the first repetition times are elements in the first repetition times set associated with the first resource block quantity sets;

The transceiving unit is further configured to receive the downlink data channel sent by the second device according to the number of the first resource blocks and the first number of repetitions.
The apparatus according to claim 16, wherein the first number of repetitions is the number of repetitions of the downlink control information transmission and/or the number of repetitions of the downlink data channel transmission scheduled by the downlink control information.
The device according to claim 16 or 17, wherein the processing unit is further configured to:

Determining the starting position of the resource block in the first narrowband according to the downlink control information.
The apparatus according to any one of claims 16 to 18, wherein the downlink control information includes first information and second information, and the first information is used to indicate the starting position of a resource block and/or The first resource block quantity, and the second information is used to determine the first repetition quantity in the first repetition quantity set;

The processing unit is specifically used for:

Determining the starting position of the resource block and/or the number of the first resource block according to the first information;

The processing unit is specifically used for:

The first device determines the first repetition number according to the second information and the first repetition number set.
The apparatus according to any one of claims 16 to 18, wherein the downlink control information comprises third information, and the third information is used to indicate the number of the first resource block and the first repetition Or, the third information is used to indicate the starting position of the resource block, the number of the first resource block, and the first repetition number.
The apparatus according to any one of claims 16 to 20, wherein the multiple resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and the second resource block quantity set The element values contained in the quantity set are all less than the element values contained in the third resource block quantity set;

The second set of repetitions associated with the second set of resource block numbers includes P elements, and the third set of repetitions associated with the third set of resource block numbers includes Q elements, where P is less than or equal to Q , P and Q are positive integers greater than 0.
A communication device, characterized by comprising:

A processing unit, configured to determine downlink control information, where the downlink control information is used by the first device to determine the first number of repetitions and the first number of resource blocks in the first narrowband, where the first number of resource blocks is the first An element in a resource block quantity set, the first resource block quantity set includes one or more resource block quantities, the first resource block quantity set is a set of a plurality of resource block quantity sets, the multiple Each resource block quantity set in the resource block quantity set is associated with a set of repetition times, and the set of repetition times associated with different resource block quantity sets is different, and the first repetition quantity is the first associated with the first resource block quantity set. Elements in the set of repetition times;

A transceiver unit, configured to send the downlink control information to the first device;

The transceiver unit is further configured to send a downlink data channel to the first device according to the downlink control information.
The apparatus according to claim 22, wherein the first number of repetitions is the number of repetitions of the downlink control information transmission and/or the number of repetitions of the downlink data channel transmission scheduled by the downlink control information.
The apparatus according to claim 22 or 23, wherein the downlink control information includes first information and second information, and the first information is used to indicate a starting position of a resource block and/or the first resource The number of blocks, and the second information is used to determine the first number of repetitions in the set of the first number of repetitions.
The apparatus according to claim 22 or 23, wherein the downlink control information comprises third information, and the third information is used to indicate the number of the first resource blocks and the first number of repetitions, or, The third information is used to indicate the starting position of the resource block, the number of the first resource block, and the first number of repetitions.
The device according to any one of claims 22 to 25, wherein:

The plurality of resource block quantity sets include at least a second resource block quantity set and a third resource block quantity set, and the element values contained in the second resource block quantity set are all smaller than the elements contained in the third resource block quantity set value;

The second set of repetitions associated with the second set of resource block numbers includes P elements, and the third set of repetitions associated with the third set of resource block numbers includes Q elements, where P is less than or equal to Q , P and Q are positive integers greater than 0.