CN111670602B

CN111670602B - Data transmission method and related equipment

Info

Publication number: CN111670602B
Application number: CN201880088319.0A
Authority: CN
Inventors: 朱小松; 吴毅凌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2022-10-28
Anticipated expiration: 2038-02-09
Also published as: CN111670602A; WO2019153267A1

Abstract

The embodiment of the invention discloses a data transmission method and related equipment, wherein the method can comprise the following steps: the method comprises the steps that terminal equipment sends RRC connection request information to network equipment, wherein the RRC connection request information comprises first indication information, and the first indication information is used for indicating the service type of the terminal equipment; the terminal equipment receives an RRC connection establishment message sent by network equipment, wherein the RRC connection establishment message comprises second indication information, and the second indication information is used for indicating a scheduling mode matched with the service type; and the terminal equipment and the network equipment carry out data transmission according to the scheduling mode. By adopting the embodiment of the invention, different scheduling modes can be adopted for data transmission according to the service type of the terminal equipment.

Description

Data transmission method and related equipment

Technical Field

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

Background

With the development of the mobile Internet and Internet of Things industry, more and more mobile terminals are connected with each other and share richer data, and a Narrow-Band Internet of Things (NB-IoT) based on cellular becomes an important branch of the Internet of everything. The NB-IoT is constructed in a cellular network, consumes only about 180KHz bandwidth, and can be directly deployed in a global system for mobile communication (GSM) network, a Universal Mobile Telecommunications System (UMTS) network, or a Long Term Evolution (LTE) network, so as to reduce the deployment cost and achieve smooth upgrade. NB-IoT is an emerging technology in the IoT field, supports cellular data connectivity of Low-Power devices over Wide Area networks, and is also called Low-Power Wide-Area Network (LPWAN). NB-IoT supports efficient connection of devices with long standby time and high requirements for network connectivity.

Currently, in an NB-IoT system, uplink and Downlink data transmission is scheduled based on Downlink Control Information (DCI). Specifically, in the Downlink data transmission process, the terminal device blindly detects DCI in a Narrowband Physical Downlink Control Channel (NPDCCH), and receives Narrowband Physical Downlink Shared Channel (PDSCH) data according to Downlink authorization after the DCI is successfully received. In the Uplink data transmission process, the terminal device blindly detects DCI in a Narrowband Physical Downlink Control Channel (NPDCCH), prepares Narrowband Physical Uplink Shared Channel (NPUSCH) data according to an Uplink authorization indication after the DCI is successfully received, and transmits PUSCH data on an indicated time-frequency resource.

In the system based on scheduling, the uplink and downlink scheduling firstly sends the DCI and then transmits the PDSCH/PUSCH, and the DCI transmission occupies different time according to different coverage levels of the terminal equipment. Different services have different sensitivities to time delay, and for time delay sensitive services, the DCI transmission occupies too long time, so that the time delay cannot meet the requirement.

Disclosure of Invention

The embodiment of the invention provides a data transmission method and related equipment, which can adopt different scheduling modes to carry out data transmission according to the service type of terminal equipment, thereby improving the communication efficiency.

In a first aspect, an embodiment of the present invention provides a data transmission method, which may include:

the method comprises the steps that terminal equipment sends RRC connection request information to network equipment, wherein the RRC connection request information comprises first indication information, and the first indication information is used for indicating the service type of the terminal equipment; the terminal equipment receives an RRC connection establishment message sent by network equipment, wherein the RRC connection establishment message comprises second indication information, and the second indication information is used for indicating a scheduling mode matched with the service type; and the terminal equipment and the network equipment carry out data transmission according to the scheduling mode. In the embodiment of the present invention, the RRC connection request message at the terminal device side carries the service types of the terminal device that require data transmission, such as the delay sensitive service and the delay insensitive service, and the network device side carries the scheduling mode matched with the service type in the RRC connection setup message according to the service type reported by the terminal device, so that the terminal device performs data transmission according to the scheduling mode, that is, different scheduling modes are matched according to different service types, which is more flexible and improves communication efficiency.

In a possible implementation manner, when the service type is a first service, the scheduling mode matched with the first service is a downlink control information scheduling mode; the data transmission between the terminal device and the network device according to the scheduling mode includes: and the terminal equipment transmits uplink or downlink data with the network equipment according to the downlink control information sent by the network equipment. In the embodiment of the present invention, when the service type is the first service, for example, the first service is a delay insensitive service, the network device may instruct the terminal device to transmit data according to a downlink control information scheduling mode, that is, the terminal device receives downlink control information sent by the network device, and then transmits uplink or downlink data according to the relevant time-frequency resource information and the modulation and coding scheme in the downlink control information.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is an uplink non-scheduling mode; the second indication information comprises information of a first time-frequency resource and information of a first modulation and coding mode; the data transmission between the terminal device and the network device according to the scheduling mode includes: and the terminal equipment sends uplink data to the network equipment in the first modulation and coding mode on the first time-frequency resource according to the information of the first time-frequency resource and the information of the first modulation and coding mode. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay-sensitive service, the network device may indicate that the scheduling mode of the terminal device is an uplink non-scheduling mode, and in the uplink non-scheduling mode, the terminal device may send uplink data to the network device in a first modulation and coding manner on the first time-frequency resource according to information of the first time-frequency resource and information of the first modulation and coding manner in second indication information included in an RRC connection establishment message sent by the network device. Therefore, the time that the terminal equipment can send uplink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time-frequency resource and information of a second modulation and coding mode; the data transmission between the terminal device and the network device according to the scheduling mode includes: and the terminal equipment receives downlink data sent by the network equipment on the second time frequency resource in the second modulation and coding mode according to the information of the second time frequency resource and the information of the second modulation and coding mode. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay sensitive service, the network device may indicate, through second indication information included in the RRC connection setup message, that the scheduling mode of the terminal device is a downlink non-scheduling mode, and in the downlink non-scheduling mode, the terminal device may receive, in the second time-frequency resource, downlink data sent by the network device in the second modulation and coding mode according to information of the second time-frequency resource and information of the second modulation and coding mode in a system message sent by the network device before. Therefore, the time that the terminal equipment can receive the downlink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a possible implementation manner, when the service type is the second service, the second indication information is used to indicate that the scheduling mode matched with the second service is an uplink non-scheduling mode; the method further comprises the following steps: the terminal equipment receives a system message broadcasted by the network equipment, wherein the system message comprises information of a first time-frequency resource and information of a first modulation and coding mode; the data transmission between the terminal device and the network device according to the scheduling mode includes: and the terminal equipment sends uplink data to the network equipment in the first modulation and coding mode on the first time-frequency resource according to the information of the first time-frequency resource and the information of the first modulation and coding mode. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay sensitive service, the network device may indicate the scheduling mode of the terminal device as an uplink non-scheduling mode, and in the uplink non-scheduling mode, the terminal device may send uplink data to the network device in the first modulation and coding manner on the first time-frequency resource according to information of the first time-frequency resource and information of the first modulation and coding manner, which are indicated in a system message sent by the network device. Therefore, the time that the terminal equipment can send uplink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a possible implementation manner, when the service type is the second service, the second indication information is used to indicate that the scheduling mode matched with the second service is a downlink non-scheduling mode; the method further comprises the following steps: the terminal equipment receives a system message broadcasted by the network equipment, wherein the system message comprises information of a second time-frequency resource and information of a second modulation and coding mode; the data transmission between the terminal device and the network device according to the scheduling mode includes: and the terminal equipment receives downlink data sent by the network equipment on the second time frequency resource in the second modulation and coding mode according to the information of the second time frequency resource and the information of the second modulation and coding mode. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay sensitive service, the network device may indicate the scheduling mode of the terminal device as a downlink non-scheduling mode, and in the downlink non-scheduling mode, the terminal device may receive downlink data sent by the network device in a second modulation and coding mode on the second time-frequency resource according to information of the second time-frequency resource and information of the second modulation and coding mode indicated in a system message sent by the network device. Therefore, the time that the terminal equipment can receive the downlink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a second aspect, an embodiment of the present invention provides a data transmission method, which may include:

network equipment receives an RRC connection establishment request sent by terminal equipment, wherein the RRC connection establishment request comprises first indication information, and the first indication information is used for indicating the service type of the terminal equipment; the network equipment sends an RRC connection establishment message to the terminal equipment, wherein the RRC connection establishment message comprises second indication information, and the second indication information is used for indicating a scheduling mode matched with the service type; and the network equipment and the terminal equipment carry out data transmission according to the scheduling mode. In the embodiment of the present invention, the RRC connection request message at the terminal device side carries the service types of the terminal device that require data transmission, such as the delay sensitive service and the delay insensitive service, and the network device side carries the scheduling mode matched with the service type in the RRC connection setup message according to the service type reported by the terminal device, so that the terminal device performs data transmission according to the scheduling mode, that is, different scheduling modes are matched according to different service types, which is more flexible and improves communication efficiency.

In a possible implementation manner, when the service type is a first service, the scheduling mode matched with the first service is a downlink control information scheduling mode; the network device and the terminal device perform data transmission according to the scheduling mode, including: and the network equipment transmits uplink or downlink data with the terminal equipment according to the downlink control information sent to the terminal equipment. In the embodiment of the present invention, when the service type is the first service, for example, the first service is a delay insensitive service, the network device may instruct the terminal device to transmit data according to a downlink control information scheduling mode, that is, the terminal device receives downlink control information sent by the network device, and then transmits uplink or downlink data according to the relevant time-frequency resource information and the modulation and coding scheme in the downlink control information.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is an uplink non-scheduling mode; the second indication information comprises information of a first time-frequency resource and information of a first modulation and coding mode; the network device and the terminal device perform data transmission according to the scheduling mode, including: and the network equipment receives the uplink data sent by the terminal equipment on the first time-frequency resource in the first modulation and coding mode. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay sensitive service, the network device may indicate the scheduling mode of the terminal device as an uplink non-scheduling mode, and in the uplink non-scheduling mode, the terminal device may send uplink data to the network device in the first modulation and coding manner on the first time-frequency resource according to information of the first time-frequency resource and information of the first modulation and coding manner in second indication information included in an RRC connection establishment message sent by the network device. Therefore, the time that the terminal equipment can send the uplink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time frequency resource and information of a second modulation and coding mode; the network device and the terminal device perform data transmission according to the scheduling mode, including: and the network equipment sends downlink data to the terminal equipment on the second time-frequency resource in the second modulation and coding mode. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay sensitive service, the network device may indicate, through second indication information included in the RRC connection setup message, that the scheduling mode of the terminal device is a downlink non-scheduling mode, and in the downlink non-scheduling mode, the terminal device may receive, in the second time-frequency resource, downlink data sent by the network device in the second modulation and coding mode according to information of the second time-frequency resource and information of the second modulation and coding mode in the second indication information sent by the network device before. Therefore, the time that the terminal equipment can receive the downlink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a possible implementation manner, when the service type is the second service, the second indication information is used to indicate that the scheduling mode matched with the second service is an uplink non-scheduling mode; the method further comprises the following steps: the network equipment broadcasts a system message, wherein the system message comprises information of a first time-frequency resource and information of a first modulation and coding mode; the network device and the terminal device perform data transmission according to the scheduling mode, including: and the network equipment receives the uplink data sent by the terminal equipment on the first time-frequency resource in the first modulation and coding mode. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay-sensitive service, the network device may indicate the scheduling mode of the terminal device as an uplink non-scheduling mode, and in the uplink non-scheduling mode, the terminal device may send uplink data to the network device in a first modulation and coding manner on the first time-frequency resource according to information of the first time-frequency resource and information of the first modulation and coding manner indicated in a system message sent by the network device. Therefore, the time that the terminal equipment can send the uplink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a possible implementation manner, the service type is the second service, and the second indication information is used to indicate that the scheduling mode matched with the second service is a downlink non-scheduling mode; the method further comprises the following steps: the network equipment broadcasts a system message, wherein the system message comprises information of a second time-frequency resource and information of a second modulation and coding mode; the network device and the terminal device perform data transmission according to the scheduling mode, including: and the network equipment sends downlink data to the terminal equipment on the second time-frequency resource in the second modulation and coding mode. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay sensitive service, the network device may indicate the scheduling mode of the terminal device as a downlink non-scheduling mode, and in the downlink non-scheduling mode, the terminal device may receive downlink data sent by the network device in a second modulation and coding mode on the second time-frequency resource according to information of the second time-frequency resource and information of the second modulation and coding mode indicated in a system message sent by the network device. Therefore, the time that the terminal equipment can receive the downlink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a first modulation scheme supported by the terminal device, where the first modulation scheme includes any one of Binary Phase Shift Keying (BPSK), quadrature Phase Shift Keying (QPSK), 16 quadrature amplitude modulation (16 QAM), 64 quadrature amplitude modulation (64 QAM), and 256 quadrature amplitude modulation (256 QAM); the information of the first modulation and coding mode comprises modulation and coding Mode (MCS) indexes of a Physical Uplink Shared Channel (PUSCH), wherein the order of the modulation mode corresponding to the MCS index of the PUSCH is less than or equal to the order of the first modulation mode. In the embodiment of the present invention, the terminal device may indicate, in the RRC connection establishment request, a modulation scheme that the terminal device can support, in addition to the service type of the terminal device, and the network device may indicate, in the RRC connection establishment message, an MCS index of a PUSCH that matches the capability of the terminal device according to the modulation scheme that the terminal device supports, so as to configure a relevant parameter for uplink transmission according to the capability of the terminal device.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a maximum number M of channel bindings supported by the terminal device; the information of the first time-frequency resource comprises a channel binding number N of a PUSCH, wherein M and N are positive integers, and N is less than or equal to M. In the embodiment of the present invention, the terminal device indicates the maximum number M of channel bindings supported by the terminal device in addition to the service type of the terminal device in the RRC connection establishment request, and the network device may include the number N of channel bindings of the PUSCH in the information of the first time-frequency resource in the RRC connection establishment message according to the capability of the terminal device, so as to configure the relevant parameters of uplink transmission according to the capability of the terminal device.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a radio frequency bandwidth supported by the terminal device; the information of the first time-frequency resource comprises frequency hopping bandwidth of PUSCH, wherein the maximum value of the frequency hopping bandwidth is less than or equal to the value of the radio frequency bandwidth. In the embodiment of the present invention, the terminal device indicates, in the RRC connection establishment request, the radio frequency bandwidth supported by the terminal device in addition to the service type of the terminal device, and the network device may include, in the information of the first time-frequency resource in the RRC connection establishment message, the frequency hopping bandwidth of the PUSCH according to the capability of the terminal device, so as to configure the relevant parameters of the uplink transmission according to the capability of the terminal device.

With reference to any one of the foregoing implementation manners of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a first modulation scheme supported by the terminal device, where the first modulation scheme includes any one of binary phase shift keying BPSK, quadrature phase shift keying QPSK,16 quadrature amplitude modulation 16QAM, 64 quadrature amplitude modulation 64QAM, and 256 quadrature amplitude modulation 256 QAM; the information of the second modulation and coding scheme comprises a Modulation and Coding Strategy (MCS) index of a Physical Downlink Shared Channel (PDSCH), wherein the order of the modulation scheme corresponding to the MCS index of the PDSCH is less than or equal to the order of the first modulation scheme. In the embodiment of the present invention, the terminal device may indicate the service type of the terminal device in the RRC connection establishment request, and may also indicate the modulation mode that the terminal device can support, and the network device may indicate the MCS index of the PDSCH that is matched with the capability of the terminal device in the RRC connection establishment message according to the modulation mode that the terminal device supports, so as to configure the related parameters of downlink transmission according to the capability of the terminal device.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a maximum number M of channel bindings supported by the terminal device; the information of the second time-frequency resource comprises the channel binding number N of the PDSCH, wherein M and N are positive integers, and N is less than or equal to M. In the embodiment of the present invention, the terminal device indicates the service type of the terminal device in the RRC connection establishment request, and also indicates the maximum number M of channel bindings supported by the terminal device, and the network device may include the number N of channel bindings of the PDSCH in the information of the first time-frequency resource in the RRC connection establishment message according to the capability of the terminal device, so as to configure the related parameters of downlink transmission according to the capability of the terminal device.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a radio frequency bandwidth supported by the terminal device; the information of the second time-frequency resource comprises frequency hopping bandwidth of the PDSCH, wherein the maximum value of the frequency hopping bandwidth is less than or equal to the value of the radio frequency bandwidth. In the embodiment of the present invention, the terminal device indicates, in the RRC connection establishment request, the radio frequency bandwidth supported by the terminal device in addition to the service type of the terminal device, and the network device may include, in the information of the first time-frequency resource in the RRC connection establishment message, the frequency hopping bandwidth of the PDSCH according to the capability of the terminal device, so as to configure the related parameters of downlink transmission according to the capability of the terminal device.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the service type includes a first service and a second service, and a delay requirement of the second service is higher than that of the first service. According to the embodiment of the invention, the service types at the terminal equipment side are divided into the service with high time delay requirement and the service with low time delay requirement, so that different scheduling modes are matched for the services with different time delay requirements for data transmission.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, when the service type is a second service, the RRC connection setup message includes a physical uplink shared channel PUSCH resource configuration parameter and a physical HARQ indicator channel PHICH resource configuration parameter. In the embodiment of the present invention, when the service type is the second service and the corresponding scheduling mode may be the uplink non-scheduling mode, the RRC connection setup message includes the relevant configuration parameters for uplink transmission.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, when the service type is a second service, the RRC connection setup message includes PDSCH resource configuration information and PUCCH resource configuration information. In the embodiment of the present invention, when the service type is the second service and the corresponding scheduling mode may be a downlink non-scheduling mode, the RRC connection setup message includes the related configuration parameters for downlink transmission.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, when the service type is a first service; the RRC connection establishment message comprises a downlink physical control channel (PDCCH) configuration parameter and an uplink Scheduling Request (SR) configuration parameter. In the embodiment of the present invention, when the service type is the first service and the corresponding scheduling mode may be the uplink scheduling mode, the RRC connection setup message includes the relevant configuration parameters for uplink scheduling.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, when the service type is a first service; and the RRC connection establishment message packet contains a PDCCH configuration parameter. In the embodiment of the present invention, when the service type is the first service and the corresponding scheduling mode may be a downlink scheduling mode, the RRC connection setup message includes the relevant configuration parameters for downlink scheduling.

In a third aspect, the present application provides a terminal device, where the terminal device has a function of implementing the terminal device in any one of the foregoing data transmission method embodiments. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fourth aspect, the present application provides a network device, where the network device has a function of implementing the network device in any one of the data transmission method embodiments. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fifth aspect, the present application provides a terminal device, where the terminal device includes a processor, and the processor is configured to support the terminal device to execute a corresponding function in the data transmission method provided in the first aspect. The terminal device may also include a memory, coupled to the processor, that stores program instructions and data necessary for the terminal device. The terminal device may also include a communication interface for the terminal device to communicate with other devices or a communication network.

In a sixth aspect, the present application provides a network device, where the network device includes a processor, and the processor is configured to support the network device to execute corresponding functions in the data transmission method provided in the second aspect. The network device may also include a memory, coupled to the processor, that stores program instructions and data necessary for the network device. The network device may also include a communication interface for the network device to communicate with other devices or a communication network.

In a seventh aspect, the present application provides a computer storage medium for storing computer software instructions for the terminal device provided in the fifth aspect, which contains a program designed to execute the above aspects.

In an eighth aspect, the present application provides a computer storage medium for storing computer software instructions for the network device of the above sixth aspect, which contains a program designed to execute the above aspects.

In a ninth aspect, an embodiment of the present invention provides a computer program, where the computer program includes instructions, and when the computer program is executed by a computer, the computer may execute the flow in the data transmission method in any one of the first aspect and the second aspect.

In a tenth aspect, the present application provides a chip system, which includes a processor for supporting a terminal device or a network device to implement the functions recited in the above aspects. In one possible implementation, the system-on-chip further includes a memory for storing necessary program instructions and data during the data transfer. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the embodiments or the background art of the present invention will be described below.

Fig. 1 is a schematic channel structure diagram of an NB-IoT communication system provided in an embodiment of the present invention;

fig. 2 is a diagram of a communication system architecture according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a random access process of a terminal device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a simplified network device structure according to an embodiment of the present invention.

Detailed Description

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

The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Hereinafter, some terms in the present application are explained to facilitate understanding by those skilled in the art.

(1) Logical channel: the logical channel describes the type of information, i.e. defines what information is transmitted. An interface between a Media Access Control (MAC) layer and a Radio Link Control (RLC) layer is a logical channel. The MAC layer provides services to the RLC layer through logical channels.

As shown in fig. 1, fig. 1 is a schematic diagram of a channel structure of an NB-IoT communication system according to an embodiment of the present invention, where logical channels are classified into 2 types: logical control channels and logical traffic channels. The logical control channel is used for transmitting control plane information, and may include: broadcast Control Channel (BCCH), PCCH (Paging Control Channel), CCCH (Common Control Channel), DCCH (Dedicated Control Channel). The logical traffic channel is used for transmitting user plane information, and may include: DTCH (Dedicated Traffic Channel).

(2) Transmission channel: the transmission channel describes the way in which information is transmitted, i.e. defines how information is transmitted. The interface between the Physical Layer (PHY) and the Medium Access Control (MAC) Layer is a transport channel. The PHY layer provides services to the MAC layer through transport channels. The transmission channels may be generally classified according to the manner in which signals are transmitted over the radio interface, such as channel coding strategy, modulation method, and antenna mapping.

As shown in fig. 1, the transmission channel may include: DL-SCH (Downlink Shared Channel), BCH (Broadcast Channel), PCH (Paging Channel), UL-SCH (Uplink Shared Channel), RACH (Random Access Channel).

(3) Physical channel: used by the physical layer for the transmission of specific signals. The physical channel corresponds to a Resource Element (RE) set carrying higher layer information. The basic entities constituting the physical channel are a Resource factor (RE) and a Resource Block (RB).

As shown in fig. 1, the physical channels may include: a Narrowband Physical Downlink Control Channel (NPDCCH), a Narrowband Physical Downlink Shared Channel (NPDSCH), a Narrowband Physical Random Access Control Channel (NPRACH), a Narrowband Physical Uplink Shared Channel (NPUSCH), a Narrowband Physical Broadcast Channel (NPBCH), a Narrowband Reference Signal (NRS), a Narrowband Positioning Reference Signal (NPRS).

In the LTE system, the physical channels may include: PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PBCH (Physical Broadcast Channel), PMCH (Physical Multicast Channel), PHICH (Physical Hybrid ARQ Indicator Channel), PCFICH (Physical Control Format Indicator Channel), PUCCH (Physical Uplink Control Channel), physical Uplink Shared Channel), PRACH (Physical Random Access Channel).

(4) ALOHA protocol is a random access or contention transmission protocol. Random access means a time at which its transmission cannot be expected for any station; contention transmission refers to the use of the channel by which all transmitting stations are free to contend. Aloha protocol or Aloha technology, aloha network. The Slotted ALOHA protocol (Slotted ALOHA) is an improvement over the pure ALOHA protocol, the idea being to use a clock to unify the data transmission of the users. The improvement is that it segments the channel in time, each transmission point being able to transmit only at the beginning of a segment. The user must wait until the next time slice each time data transmission begins, and the data transmitted each time must be less than or equal to one time segment of a channel. This greatly reduces collisions of the transmission channels. Therefore, the randomness of data transmission of users is avoided, the possibility of data collision is reduced, and the utilization rate of the channel is improved.

Embodiments of the present application are described below with reference to the drawings.

Referring to fig. 2, fig. 2 is a diagram of a communication system architecture according to an embodiment of the present invention, where the communication system architecture includes an Evolved Packet Core (EPC), a network device, and a terminal device. By way of example and not limitation, the terminal device is accessed by a network device (e.g., a base station) through an air interface Uu interface, and the network device is connected to the core network through an S1 interface to perform backhaul and forward transfer of data. Wherein the content of the first and second substances,

the terminal equipment is equipment with a wireless transceiving function. Can be deployed on land, including indoors or outdoors, hand-held, worn, or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), and so on. The embodiments of the present application do not limit the application scenarios. A terminal device may also be sometimes referred to as a User Equipment (UE), an access terminal device, a UE unit, a UE station, a mobile station, a distant station, a remote terminal device, a mobile device, a UE terminal, a wireless communication device, a UE agent, a UE device, or the like.

The network device may be a network element on a network side in the 5G communication system, for example, a gNB, and may also be an ACCESS POINT (ACCESS POINT, AP) in a WLAN, or a relay station or an ACCESS POINT, or a vehicle-mounted device, a wearable device, and a network device (G Node B, abbreviated as "gNB" or "gnnodeb") in a future 5G network or a network device in a future evolved PLMN network, and the like. And can also be an eNodeB in an NB-IoT system, and further can be an eNodeB in a 230MHz IoT system.

In addition, in this embodiment of the present invention, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells), and the like, wherein the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

And the core network is mainly used for providing data support and related services for the communication system.

The embodiment of the invention can be applied to various communication systems, such as: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, an advanced long term evolution (LTE-a) system, a Universal Mobile Telecommunications System (UMTS), a next generation communication system such as a 5G Radio Access Technology in gpp nr system (5 GNR system), a Machine to Machine communication (M2M) system, an IoT-NB communication system, or a 230MHz communication system.

It should be noted that, since the data transmission method in the present application can be applied to the above various communication systems, there may be differences in the division and definition of the logical channels, the transport channels, and the physical channels in different communication systems. Some embodiments in the present application are described in a manner of dividing channels in LTE, but do not mean that the present application can only be applied to an LTE system, and when the data transmission method in the present application is applied to an NB-IoT communication system, for example, a PDSCH corresponds to NPDSCH, a PUSCH corresponds to NPUSCH, and a PDCCH corresponds to NPDCCH, the present application is not limited to this specifically. In summary, when the data transmission method in the present application is applied to different communication systems, the resource allocation parameters of the corresponding channels are adaptively adjusted according to the different communication systems.

It is understood that any system to which any data transmission method of the present application can be applied is within the scope of the present invention. The communication system architecture in fig. 2 is only an exemplary implementation manner in the embodiment of the present invention, and the communication system architecture in the embodiment of the present invention includes, but is not limited to, the above communication system architecture.

The technical problems set forth in the present application are analyzed and solved below in conjunction with embodiments of the data transmission method provided in the present application.

Referring to fig. 3, it is a schematic flow chart of a data transmission method provided by an embodiment of the present invention, which can be applied to the communication system described in fig. 2, and will be described below with reference to fig. 3 from an interaction side of a terminal device and a network device, where the method may include the following steps S301 to S303.

Step S301: the method comprises the steps that terminal equipment sends RRC connection request information to network equipment, wherein the RRC connection request information comprises first indication information, and the first indication information is used for indicating the service type of the terminal equipment; the network equipment receives an RRC connection establishment request sent by the terminal equipment.

Specifically, in the prior art, random access is a process initiated in an idle mode or a connected mode for establishing a radio connection between a terminal device and a network device, and is mainly used for completing uplink synchronization between the terminal device (e.g., UE) and the network device (e.g., base station) and applying for uplink resources, that is, for achieving synchronization between the UE and the network, resolving a conflict, and allocating Resources (RNTI) and uplink communication resources. Here, RRC (Radio Resource Control) refers to Radio Resource Control. As shown in fig. 4, fig. 4 is a schematic diagram of a random access process of a terminal device according to an embodiment of the present invention, which includes the following 5 steps:

step 1, UE sends Random Access preamble (MSG 1);

step 2, the base station sends a Random Access Response message (Random Access Response), which can be called as MSG2;

step 3, the UE sends an RRC Connection Request (RRC Connection Request), which can be called as MSG3;

step 4, the UE receives RRC Connection Setup (RRC Connection Setup), which can be called MSG4;

step 5, radio resource control Connection Complete (RRC Connection Complete) between the UE and the base station, which may be referred to as MSG5.

In the embodiment of the present invention, the RRC connection request message in step 3, that is, MSG3, carries the first indication information, where the first indication information is used to indicate the service type of the terminal device, and the service type may change in real time according to the service currently required by the terminal device. For example, it can be classified into a delay sensitive service and a delay insensitive service. See table 1.

TABLE 1

Table 1 shows the relevant traffic classes involved and the corresponding latency requirements when the 230MHz IoT system is applied to the power system. In a 230MHz IoT power system, the main solutions at present are power utilization, power distribution, and accurate load control services, and for these three types of services, specific service features are as follows:

(1) The power consumption is realized, the network side initiates, the uplink and the downlink are repeatedly small Bao Jiaohu, the process is complicated, and the delay tolerance is high.

(2) The power distribution (remote control, remote measurement, remote signaling, link test and communication time synchronization) network side initiation and terminal equipment side initiation are mixed, the size change range of a downlink packet and an uplink packet is large, certain requirements on time delay are met, and the capacity requirement is high.

(3) Accurate load control (remote control, remote measurement and remote signaling), wherein the remote control is a downlink service and requires that the time delay of a one-way transmission air interface is not more than 33ms; remote measurement and remote signaling are uplink services, and unidirectional transmission air interface delay is required to be not more than 50 ms.

As can be seen from table 1 above, the precise load control service may be classified as a delay sensitive service, and the electricity information collection service may be classified as a delay insensitive service. It is understood that the service types of the terminal devices may be divided into more types according to other standards, and this is not limited in this application.

Step S302: the network equipment sends an RRC connection establishment message to the terminal equipment, wherein the RRC connection establishment message comprises second indication information, and the second indication information is used for indicating a scheduling mode matched with the service type; and the terminal equipment receives an RRC connection establishment message sent by the network equipment.

Specifically, the RRC connection setup message in step 4, that is, the MSG3, carries second indication information, where the second indication information is used to indicate a scheduling mode of the terminal device, and the scheduling mode is matched with the service type reported in step S301. For example, the scheduling mode is a downlink control information scheduling and non-scheduling mode, where the delay-sensitive service may correspond to the non-scheduling mode, and the delay-insensitive service may correspond to the downlink control information scheduling mode. It can be understood that the network device may also configure relevant parameters corresponding to the scheduling mode according to requirements, for example, time-frequency resource parameters, modulation and coding mode parameters, and the like.

Step S303: and the terminal equipment and the network equipment carry out data transmission according to the scheduling mode. And the network equipment and the terminal equipment carry out data transmission according to the scheduling mode.

Specifically, data transmission is performed between the terminal device and the network device according to the scheduling mode indicated by the network device. Specifically, the following modes may be included. The following is exemplified in manner one, manner two, and manner three:

in the first mode, the service type is a first service (for example, a delay insensitive service), and the uplink and downlink scheduling modes are based on DCI:

in a possible implementation manner, when the service type is a first service, the scheduling mode matched with the first service is a downlink control information scheduling mode; the terminal device and the network device perform data transmission according to a scheduling mode, specifically: and the network equipment transmits uplink or downlink data with the terminal equipment according to the downlink control information sent to the terminal equipment. And the terminal equipment transmits uplink or downlink data with the network equipment according to the downlink control information sent by the network equipment. Wherein

In uplink transmission, if based on the downlink control information scheduling manner, MSG4 may include the following configuration parameters:

(1) PDCCH resource configuration parameters, such as carrier resource location, repetition number, start offset, etc.;

(2) SR resource configuration parameters such as carrier resource location, repetition number, period, start offset, duration, SR preamble start index, end index, etc.

In downlink transmission, if based on a downlink control information scheduling manner, MSG4 may include the following configuration parameters:

(1) PDCCH resource configuration parameters such as carrier resource location, number of bonded carriers, number of repetitions, start offset.

In the second mode, the service type is a second service (for example, delay sensitive service), and the uplink behavior is in a non-scheduling mode.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is an uplink non-scheduling mode; the second indication information comprises information of the first time-frequency resource and information of the first modulation and coding mode; the terminal device and the network device perform data transmission according to a scheduling mode, specifically: and the terminal equipment sends uplink data to the network equipment in the first modulation and coding mode on the first time-frequency resource according to the information of the first time-frequency resource and the information of the first modulation and coding mode. The network equipment receives uplink data sent by the terminal equipment on the first time-frequency resource in a first modulation and coding mode. For the uplink non-scheduling mode, a timeslot ALOHA mode may be used for uplink transmission to avoid timeslot collision. Wherein, the first and the second end of the pipe are connected with each other,

in uplink transmission, if based on the non-scheduling mode, MSG4 may include the following configuration parameters:

(1) PUSCH resource configuration parameters such as carrier resource location, number of bonded carriers, MCS index, number of bonded frames, number of repetitions, period, starting offset, duration, contention window length, etc.;

(2) PHICH resource configuration parameters such as carrier resource location, repetition number, MCS index, etc.

In a third mode, the service type is a second service (for example, a delay sensitive service), and the following behavior is in a non-scheduling mode:

in a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time-frequency resource and information of a second modulation and coding mode; the terminal device and the network device perform data transmission according to a scheduling mode, specifically: and the terminal equipment receives the downlink data sent by the network equipment on the second time-frequency resource in a second modulation and coding mode according to the information of the second time-frequency resource and the information of the second modulation and coding mode. And the network equipment transmits downlink data to the terminal equipment on the second time-frequency resource in a second modulation and coding mode.

In downlink transmission, if based on a non-scheduling manner, MSG4 may include the following configuration parameters:

(1) PDSCH resource configuration parameters such as carrier resource location, number of bonded carriers, MCS index, number of bonded frames, number of repetitions, period, starting offset, duration, etc.;

(2) PUCCH resource configuration parameters such as carrier resource location, repetition number, etc.

It can be understood that the first time-frequency resource and the first modulation and coding scheme, and the second time-frequency resource and the second modulation and coding scheme may also be pre-agreed between the terminal device and the network device, that is, it is not necessary to go through the MSG4 again, that is, the MSG4 only indicates the specific scheduling mode through the second instruction, and the terminal device performs data transmission using the pre-agreed time-frequency resource and the modulation and coding scheme according to the specific scheduling mode indicated in the MSG 4.

In a possible implementation manner, when the service type is the second service, the second indication information is used to indicate that the scheduling mode matched with the second service is the uplink non-scheduling mode; the terminal equipment receives a system message broadcasted by the network equipment, wherein the system message comprises information of a first time-frequency resource and information of a first modulation and coding mode; the terminal device and the network device perform data transmission according to a scheduling mode, specifically: the terminal equipment sends uplink data to the network equipment in a first modulation and coding mode on the first time-frequency resource according to the information of the first time-frequency resource and the information of the first modulation and coding mode; correspondingly, the network device receives the uplink data sent by the terminal device in the first modulation and coding mode on the first time-frequency resource. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay-sensitive service, the network device may indicate the scheduling mode of the terminal device as an uplink non-scheduling mode, and in the uplink non-scheduling mode, the terminal device may send uplink data to the network device in a first modulation and coding manner on the first time-frequency resource according to information of the first time-frequency resource and information of the first modulation and coding manner indicated in a system message sent by the network device. Therefore, the time that the terminal equipment can send the uplink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a possible implementation manner, when the service type is the second service, the second indication information is used to indicate that the scheduling mode matched with the second service is a downlink non-scheduling mode; the terminal equipment receives a system message broadcasted by the network equipment, wherein the system message comprises information of a second time-frequency resource and information of a second modulation and coding mode; the terminal device and the network device perform data transmission according to a scheduling mode, specifically: the terminal equipment receives downlink data sent by the network equipment in a second modulation and coding mode on the second time frequency resource according to the information of the second time frequency resource and the information of the second modulation and coding mode; correspondingly, the network device sends downlink data to the terminal device in a second modulation and coding mode on the second time-frequency resource. In the embodiment of the present invention, when the service type is a second service, for example, the second service is a delay sensitive service, the network device may indicate the scheduling mode of the terminal device as a downlink non-scheduling mode, and in the downlink non-scheduling mode, the terminal device may receive downlink data sent by the network device in a second modulation and coding manner on the second time-frequency resource according to information of the second time-frequency resource and information of the second modulation and coding manner, where the information of the second time-frequency resource is indicated in a system message sent by the network device. Therefore, the time that the terminal equipment can receive the downlink data after receiving the downlink control information sent by the network equipment is saved, and the communication efficiency is improved.

In a possible implementation manner, the RRC connection establishment request further includes a first modulation mode supported by the terminal device, where the first modulation mode includes any one of binary phase shift keying BPSK, quadrature phase shift keying QPSK,16 quadrature amplitude modulation 16QAM, 64 quadrature amplitude modulation 64QAM, and 256 quadrature amplitude modulation 256 QAM; the information of the first modulation and coding scheme comprises Modulation and Coding Scheme (MCS) indexes of a Physical Uplink Shared Channel (PUSCH), wherein the order of the modulation scheme corresponding to the MCS index of the PUSCH is less than or equal to the order of the first modulation scheme. Wherein, the QPSK corresponds to an order of 2, the 16QAM corresponds to an order of 4, the 64QAM corresponds to an order of 6, and the 256QAM corresponds to an order of 8. For example, when the MSG3 reports that the modulation and demodulation scheme is QPSK, it indicates that only QPSK is supported, when 16QAM is reported, it indicates that QPSK and 16QAM are supported, and when 64QAM is reported, it indicates that QPSK,16QAM, and 64QAM are supported. And the base station configures the MCS of the PUSCH in the MSG4 based on an uplink non-scheduling mode according to the capability of the terminal equipment so that the order corresponding to the MCS does not exceed the capability of the UE. In the embodiment of the present invention, the terminal device may indicate, in addition to the service type of the terminal device, the modulation mode that the terminal device can support in the RRC connection establishment request, and the network device may indicate, in the RRC connection establishment message, the MCS index of the PUSCH that is matched with the capability of the terminal device according to the modulation mode that the terminal device supports, so as to configure the relevant parameters of uplink transmission according to the capability of the terminal device.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a maximum number M of channel bindings supported by the terminal device; the information of the first time-frequency resource comprises a channel binding number N of the PUSCH, wherein M and N are positive integers, and N is less than or equal to M. For example, MSG3 reports the maximum channel bonding number supported, which represents the number of channels that can be received simultaneously; and the base station configures the number of the binding channels of the PUSCH in the MSG4 based on an uplink non-scheduling mode according to the capability of the terminal equipment, wherein the number of the binding channels does not exceed the capability of the UE. In the embodiment of the present invention, the terminal device indicates the maximum number M of channel bindings supported by the terminal device in addition to the service type of the terminal device in the RRC connection establishment request, and the network device may include the number N of channel bindings of the PUSCH in the information of the first time-frequency resource in the RRC connection establishment message according to the capability of the terminal device, so as to configure the relevant parameters of uplink transmission according to the capability of the terminal device.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a radio frequency bandwidth supported by the terminal device; the information of the first time-frequency resource includes a frequency hopping bandwidth of the PUSCH, wherein a maximum value of the frequency hopping bandwidth is less than or equal to a value of the radio frequency bandwidth. For example, MSG3 reports a bandwidth supporting radio frequency support of the terminal device, for example, 180khz,1mhz, and 12mhz are supported; and the base station configures a hopping bitmap of a PUSCH (physical uplink shared channel) in the MSG4 according to the capacity of the terminal equipment and based on an uplink non-scheduling mode when the terminal equipment supports channel binding and the system supports frequency hopping, so that any two carrier positions bound by the channel do not exceed the bandwidth capacity supported by the terminal equipment at any moment. In the embodiment of the present invention, the terminal device indicates, in the RRC connection establishment request, the radio frequency bandwidth supported by the terminal device in addition to the service type of the terminal device, and the network device may include, in the information of the first time-frequency resource in the RRC connection establishment message, the frequency hopping bandwidth of the PUSCH according to the capability of the terminal device, so as to configure the relevant parameters of the uplink transmission according to the capability of the terminal device.

With reference to any one implementation manner of the first aspect or the second aspect, in a possible implementation manner, the RRC connection establishment request further includes a first modulation scheme supported by the terminal device, where the first modulation scheme includes any one of binary phase shift keying BPSK, quadrature phase shift keying QPSK,16 quadrature amplitude modulation 16QAM, 64 quadrature amplitude modulation 64QAM, and 256 quadrature amplitude modulation 256 QAM; the information of the second modulation and coding mode comprises Modulation and Coding Strategy (MCS) indexes of a Physical Downlink Shared Channel (PDSCH), wherein the order of the modulation mode corresponding to the MCS index of the PDSCH is less than or equal to the order of the first modulation mode. Wherein, the QPSK corresponds to an order of 2, the 16QAM corresponds to an order of 4, the 64QAM corresponds to an order of 6, and the 256QAM corresponds to an order of 8. For example, when the MSG3 reports that the modulation and demodulation scheme is QPSK, it indicates that only QPSK is supported, when 16QAM is reported, it indicates that QPSK and 16QAM are supported, and when 64QAM is reported, it indicates that QPSK,16QAM, and 64QAM are supported. And the base station configures the MCS of the PDSCH in the MSG4 based on a downlink non-scheduling mode according to the capability of the terminal equipment, so that the order corresponding to the MCS does not exceed the capability of the UE. In the embodiment of the present invention, the terminal device may indicate the service type of the terminal device in the RRC connection establishment request, and may also indicate the modulation mode that the terminal device can support, and the network device may indicate the MCS index of the PDSCH that is matched with the capability of the terminal device in the RRC connection establishment message according to the modulation mode that the terminal device supports, so as to configure the related parameters of downlink transmission according to the capability of the terminal device.

In a possible implementation manner, the RRC connection establishment request further includes a maximum number M of channel bindings supported by the terminal device; the information of the second time-frequency resource comprises a channel binding number N of the PDSCH, wherein M and N are positive integers, and N is less than or equal to M. For example, MSG3 reports the maximum channel bonding number supported, which represents the number of channels that can be received simultaneously; and the base station configures the number of binding channels of the PDSCH in the MSG4 based on a downlink non-scheduling mode according to the capability of the terminal equipment, wherein the number of the binding channels does not exceed the capability of the UE. In the embodiment of the invention, the terminal equipment indicates the maximum number M of the channel bindings supported by the terminal equipment in addition to the service type of the terminal equipment in the RRC connection establishment request, and the network equipment can include the number N of the channel bindings of the PDSCH in the information of the first time-frequency resource in the RRC connection establishment message according to the capability of the terminal equipment, so that the related parameters of downlink transmission can be configured according to the capability of the terminal equipment.

In one possible implementation, the RRC connection establishment request further includes a radio frequency bandwidth supported by the terminal device; the information of the second time-frequency resource includes a frequency hopping bandwidth of the PDSCH, wherein a maximum value of the frequency hopping bandwidth is less than or equal to a value of the radio frequency bandwidth. For example, MSG3 reports a bandwidth supporting radio frequency support of the terminal device, for example, 180khz,1mhz, and 12mhz are supported; and the base station configures a frequency hopping bitmap of the PDSCH in the MSG4 according to the capacity of the terminal equipment and based on a downlink non-scheduling mode when the terminal equipment supports channel bonding and the system supports frequency hopping, so as to ensure that any two carrier positions bound by the channel do not exceed the bandwidth capacity supported by the terminal equipment at any moment. In the embodiment of the present invention, the terminal device indicates, in the RRC connection establishment request, the radio frequency bandwidth supported by the terminal device in addition to the service type of the terminal device, and the network device may include, in the information of the first time-frequency resource in the RRC connection establishment message, the frequency hopping bandwidth of the PDSCH according to the capability of the terminal device, so as to configure the related parameters of downlink transmission according to the capability of the terminal device.

In a possible implementation manner, the service type includes a first service and a second service, and the delay requirement of the second service is higher than that of the first service. According to the embodiment of the invention, the service type of the terminal equipment side is divided into the service with high time delay requirement and the service with low time delay requirement, so that different scheduling modes are matched for the services with different time delay requirements for data transmission. For example, the first service corresponds to uplink and downlink scheduling based on downlink control information in the above-described manner one, the second service may correspond to a manner two and/or in a possible implementation manner, when the service type is the second service, the RRC connection setup message includes a physical uplink shared channel PUSCH resource configuration parameter and a physical HARQ indicator channel PHICH resource configuration parameter. In the embodiment of the present invention, when the service type is the second service and the corresponding scheduling mode may be the uplink non-scheduling mode, the RRC connection setup message includes the relevant configuration parameters for uplink transmission.

In a possible implementation manner, when the service type is the second service, the RRC connection setup message includes PDSCH resource configuration information and PUCCH resource configuration information. In the embodiment of the present invention, when the service type is the second service and the corresponding scheduling mode may be a downlink non-scheduling mode, the RRC connection setup message includes the related configuration parameters of downlink transmission.

In one possible implementation, when the service type is a first service; the RRC connection setup message includes a downlink physical control channel PDCCH configuration parameter and an uplink Scheduling Request (SR) configuration parameter. In the embodiment of the present invention, when the service type is the first service and the corresponding scheduling mode may be the uplink scheduling mode, the RRC connection setup message includes the relevant configuration parameters for uplink scheduling.

In one possible implementation, when the service type is a first service; and the RRC connection establishment message packet contains a Physical Downlink Control Channel (PDCCH) configuration parameter. In the embodiment of the present invention, when the service type is the first service and the corresponding scheduling mode may be a downlink scheduling mode, the RRC connection setup message includes the relevant configuration parameters for downlink scheduling.

It can be understood that the uplink and downlink scheduling modes may be combined with each other according to the actual service requirement of the terminal device, and the network device side may simultaneously indicate the uplink and downlink scheduling modes in the MSG4, or may only indicate the uplink or downlink scheduling modes. As shown in table 2 below, the scheduling Mode corresponding to the Transmission Mode (TM) may separately indicate uplink and downlink, or perform a combined indication according to the service type of the terminal device, which is not limited in this application.

TABLE 2

In the embodiment of the present invention, the RRC connection request message at the terminal device side carries the service types of the terminal device that require data transmission, such as the delay sensitive service and the delay insensitive service, and the network device side carries the scheduling mode matched with the service type in the RRC connection setup message according to the service type reported by the terminal device, so that the terminal device performs data transmission according to the scheduling mode, that is, different scheduling modes are matched according to different service types, which is more flexible and improves communication efficiency. When the service type of the terminal equipment is the delay sensitive service, the delay can be further reduced, and the data transmission efficiency is improved.

The method of the embodiments of the present invention is explained in detail above, and the related apparatus of the embodiments of the present invention is provided below.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention, and the terminal device 10 may include a sending unit 101, a receiving unit 102, and a processing unit 103, where details of each unit are described as follows.

A sending unit 101, configured to send an RRC connection request message to a network device by a terminal device, where the RRC connection request message includes first indication information, and the first indication information is used to indicate a service type of the terminal device;

a receiving unit 102, configured to receive an RRC connection setup message sent by a network device, where the RRC connection setup message includes second indication information, and the second indication information is used to indicate a scheduling mode matched with the service type;

a processing unit 103, configured to perform data transmission with the network device according to the scheduling mode.

In a possible implementation manner, when the service type is a first service, the scheduling mode matched with the first service is a downlink control information scheduling mode; the processing unit 103 is specifically configured to: and according to the downlink control information sent by the network equipment, transmitting uplink or downlink data with the network equipment.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is an uplink non-scheduling mode; the second indication information comprises information of a first time-frequency resource and information of a first modulation and coding mode; the processing unit 103 is specifically configured to: and sending uplink data to the network equipment in the first modulation and coding mode on the first time-frequency resource according to the information of the first time-frequency resource and the information of the first modulation and coding mode.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time-frequency resource and information of a second modulation and coding mode; the processing unit 103 is specifically configured to: and receiving downlink data sent by the network equipment on the second time frequency resource in the second modulation and coding mode according to the information of the second time frequency resource and the information of the second modulation and coding mode.

In a possible implementation manner, the RRC connection establishment request further includes a first modulation scheme supported by the terminal device, where the first modulation scheme includes any one of binary phase shift keying BPSK, quadrature phase shift keying QPSK,16 quadrature amplitude modulation 16QAM, 64 quadrature amplitude modulation 64QAM, and 256 quadrature amplitude modulation 256 QAM; the information of the first modulation and coding scheme comprises Modulation and Coding Scheme (MCS) indexes of a Physical Uplink Shared Channel (PUSCH), wherein the order of the modulation scheme corresponding to the MCS index of the PUSCH is less than or equal to the order of the first modulation scheme.

In a possible implementation manner, the RRC connection establishment request further includes a maximum number M of channel bindings supported by the terminal device; the information of the first time-frequency resource comprises a channel binding number N of a PUSCH, wherein M and N are positive integers, and N is less than or equal to M.

In one possible implementation, the RRC connection establishment request further includes a radio frequency bandwidth supported by the terminal device; the information of the first time-frequency resource comprises a frequency hopping bandwidth of a PUSCH, wherein the maximum value of the frequency hopping bandwidth is less than or equal to the value of the radio frequency bandwidth.

In a possible implementation manner, the RRC connection establishment request further includes a first modulation scheme supported by the terminal device, where the first modulation scheme includes any one of binary phase shift keying BPSK, quadrature phase shift keying QPSK,16 quadrature amplitude modulation 16QAM, 64 quadrature amplitude modulation 64QAM, and 256 quadrature amplitude modulation 256 QAM; the information of the second modulation and coding scheme comprises Modulation and Coding Scheme (MCS) indexes of a Physical Downlink Shared Channel (PDSCH), wherein the order of the modulation scheme corresponding to the MCS index of the PDSCH is smaller than or equal to the order of the first modulation scheme.

In a possible implementation manner, the RRC connection establishment request further includes a maximum number M of channel bindings supported by the terminal device; the information of the second time-frequency resource comprises the channel binding number N of the PDSCH, wherein M and N are positive integers, and N is less than or equal to M.

In one possible implementation, the RRC connection establishment request further includes a radio frequency bandwidth supported by the terminal device; the information of the second time-frequency resource comprises frequency hopping bandwidth of the PDSCH, wherein the maximum value of the frequency hopping bandwidth is less than or equal to the value of the radio frequency bandwidth.

It should be noted that, for the functions of each functional unit in the terminal device 10 described in the embodiment of the present invention, reference may be made to the related description of the method embodiment described in fig. 1 to fig. 4, and details are not described herein again.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention, and the network device 20 may include a receiving unit 201, a sending unit 202, and a processing unit 203, where details of each unit are described below.

A receiving unit 201, configured to receive an RRC connection establishment request sent by a terminal device, where the RRC connection establishment request includes first indication information, and the first indication information is used to indicate a service type of the terminal device;

a sending unit 202, configured to send an RRC connection setup message to the terminal device, where the RRC connection setup message includes second indication information, and the second indication information is used to indicate a scheduling mode matched with the service type;

a processing unit 203, configured to perform data transmission with the terminal device according to the scheduling mode.

In a possible implementation manner, when the service type is a first service, the scheduling mode matched with the first service is a downlink control information scheduling mode; the processing unit 203 is specifically configured to:

and according to the downlink control information sent to the terminal equipment, transmitting uplink or downlink data with the terminal equipment.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is an uplink non-scheduling mode; the second indication information comprises information of a first time-frequency resource and information of a first modulation and coding mode; the processing unit 203 is specifically configured to:

and receiving uplink data sent by the terminal equipment on the first time-frequency resource in the first modulation and coding mode.

In a possible implementation manner, when the service type is a second service, the scheduling mode matched with the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time-frequency resource and information of a second modulation and coding mode; the processing unit 203 is specifically configured to:

and the network equipment sends downlink data to the terminal equipment on the second time-frequency resource in the second modulation and coding mode.

In a possible implementation manner, the RRC connection establishment request further includes a first modulation scheme supported by the terminal device, where the first modulation scheme includes any one of binary phase shift keying BPSK, quadrature phase shift keying QPSK,16 quadrature amplitude modulation 16QAM, 64 quadrature amplitude modulation 64QAM, and 256 quadrature amplitude modulation 256 QAM;

the information of the first modulation and coding mode comprises modulation and coding Mode (MCS) indexes of a Physical Uplink Shared Channel (PUSCH), wherein the order of the modulation mode corresponding to the MCS index of the PUSCH is less than or equal to the order of the first modulation mode.

the information of the second modulation and coding scheme comprises a Modulation and Coding Strategy (MCS) index of a Physical Downlink Shared Channel (PDSCH), wherein the order of the modulation scheme corresponding to the MCS index of the PDSCH is less than or equal to the order of the first modulation scheme.

It should be noted that, for the functions of each functional unit in the network device 20 described in the embodiment of the present invention, reference may be made to the description related to the method embodiment described in fig. 1 to fig. 4, and details are not described herein again.

Fig. 7 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present invention. For easy understanding and illustration, in fig. 7, the terminal device is exemplified by a mobile phone. As shown in fig. 7, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly configured to process a communication protocol and communication data, control the terminal device, execute a software program, process data of the software program, and the like, for example, to control the mobile phone to execute the steps executed by the terminal device in fig. 3, which may be specifically referred to the description of the relevant parts above. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 7. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present invention.

In the embodiment of the present invention, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 7, the terminal device includes a transceiving unit 301 and a processing unit 302. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. The processing unit may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP. The processing unit may further comprise a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof. Optionally, a device for implementing a receiving function in the transceiving unit 301 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 301 may be regarded as a transmitting unit, that is, the transceiving unit 301 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc. When the communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.

Fig. 8 is a schematic diagram of a simplified network device structure according to an embodiment of the present invention. Specifically, for example, a base station. The base station includes a portion 401 and a portion 402. The 401 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 402 section is mainly used for baseband processing, base station control, and the like. Portion 401 may be generally referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc. Part 402 is typically the control center of the base station, which may be generally referred to as a processing unit, for controlling the base station to perform the steps described above with respect to the network device in fig. 3. Reference is made in particular to the description of the relevant part above.

The transceiver unit of part 401, which may also be referred to as a transceiver, or a transceiver, etc., includes an antenna and a radio frequency unit, where the radio frequency unit is mainly used for radio frequency processing. Optionally, a device used for implementing the receiving function in the part 401 may be regarded as a receiving unit, and a device used for implementing the sending function may be regarded as a sending unit, that is, the part 401 includes the receiving unit and the sending unit. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and a transmitting unit may be referred to as a transmitter, a transmitting circuit, or the like.

Section 402 may include one or more boards, each of which may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the base station. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an alternative implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

The communication device may be a chip comprising a transceiver unit and a processing unit. The transceiver unit may be an input/output circuit or a communication interface of the chip; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. The chip can be applied to the network equipment and supports the network equipment to execute the method.

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

Although the present application has been described herein with reference to various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the present application as claimed herein.

The embodiment of the present invention further provides a chip, where the chip includes a communication interface and a processor, and the processor is configured to control the communication interface to receive or send a signal, and is configured to process a signal received by the communication interface or generate a signal to be sent by the communication interface.

Specifically, the processor is configured to execute a procedure or a step on the terminal device side in the data transmission method provided in the foregoing method embodiment; or the processor is configured to execute the flow or steps on the network device side in the data transmission method provided in the foregoing method embodiment.

Optionally, the chip further comprises a storage module, the storage module storing instructions. The processing module executes the relevant operation by reading the instruction stored by the storage module, and controls the communication interface to carry out the relevant transceiving operation.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

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

One of ordinary skill in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, and when executed, may include the processes of the above method embodiments. And the aforementioned storage medium includes: various media that can store program codes, such as a read-only memory (ROM) or a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Claims

1. The data transmission method is applied to an NB-IoT power system, wherein the NB-IoT power system comprises terminal equipment meeting the NB-IoT power system communication requirements; the method comprises the following steps:

the terminal equipment sends an RRC connection request message to network equipment, wherein the RRC connection request message comprises first indication information, and the first indication information is used for indicating the service type of the terminal equipment; the service types comprise delay sensitive service and delay insensitive service;

the terminal equipment receives an RRC connection establishment message sent by network equipment, wherein the RRC connection establishment message comprises second indication information, and the second indication information is used for indicating a scheduling mode matched with the service type; the delay sensitive service corresponds to a non-scheduling mode, and the delay insensitive service corresponds to a downlink control information scheduling mode;

and the terminal equipment and the network equipment carry out data transmission according to the scheduling mode.

2. The method of claim 1, wherein when the service type is a first service, the scheduling mode matched to the first service is a downlink control information scheduling mode; the data transmission between the terminal device and the network device according to the scheduling mode includes:

and the terminal equipment transmits uplink or downlink data with the network equipment according to the downlink control information sent by the network equipment.

3. The method of claim 1, wherein when the service type is a second service, the scheduling mode matched to the second service is an uplink non-scheduling mode; the second indication information comprises information of a first time-frequency resource and information of a first modulation and coding mode; the terminal device and the network device perform data transmission according to the scheduling mode, including:

and the terminal equipment transmits uplink data to the network equipment in the first modulation and coding mode on the first time-frequency resource according to the information of the first time-frequency resource and the information of the first modulation and coding mode.

4. The method of claim 1, wherein when the service type is a second service, the scheduling mode matched to the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time-frequency resource and information of a second modulation and coding mode; the terminal device and the network device perform data transmission according to the scheduling mode, including:

and the terminal equipment receives downlink data sent by the network equipment on the second time frequency resource in the second modulation and coding mode according to the information of the second time frequency resource and the information of the second modulation and coding mode.

5. The data transmission method is applied to an NB-IoT power system, wherein the NB-IoT power system comprises network equipment meeting the NB-IoT power system communication requirements; the method comprises the following steps:

the network equipment receives an RRC connection establishment request sent by terminal equipment, wherein the RRC connection establishment request comprises first indication information, and the first indication information is used for indicating the service type of the terminal equipment; the service types comprise delay sensitive service and delay insensitive service;

the network equipment sends an RRC connection establishment message to the terminal equipment, wherein the RRC connection establishment message comprises second indication information, and the second indication information is used for indicating a scheduling mode matched with the service type; the delay sensitive service corresponds to a non-scheduling mode, and the delay insensitive service corresponds to a downlink control information scheduling mode;

and the network equipment and the terminal equipment carry out data transmission according to the scheduling mode.

6. The method of claim 5, wherein when the service type is a first service, the scheduling mode matched to the first service is a downlink control information scheduling mode; the network device and the terminal device perform data transmission according to the scheduling mode, including:

and the network equipment transmits uplink or downlink data with the terminal equipment according to the downlink control information sent to the terminal equipment.

7. The method of claim 5, wherein when the service type is a second service, the scheduling mode matched to the second service is an uplink non-scheduling mode; the second indication information comprises information of a first time-frequency resource and information of a first modulation and coding mode; the network device and the terminal device perform data transmission according to the scheduling mode, including:

and the network equipment receives the uplink data sent by the terminal equipment on the first time-frequency resource in the first modulation and coding mode.

8. The method of claim 5, wherein when the service type is a second service, the scheduling mode matched to the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time-frequency resource and information of a second modulation and coding mode; the network device and the terminal device perform data transmission according to the scheduling mode, including:

9. The method of claim 7, wherein the RRC connection setup request further includes a first modulation scheme supported by the terminal device, the first modulation scheme including any one of binary phase shift keying, BPSK, QPSK,16 quadrature amplitude modulation, 16QAM, 64 quadrature amplitude modulation, 64QAM, and 256 quadrature amplitude modulation, 256 QAM;

10. The method of claim 7, wherein the RRC connection setup request further comprises a maximum number of channel bonding M supported by the terminal device; the information of the first time-frequency resource comprises a channel binding number N of a PUSCH, wherein M and N are positive integers, and N is less than or equal to M.

11. The method of claim 7, wherein the RRC connection setup request further includes a radio frequency bandwidth supported by the terminal device; the information of the first time-frequency resource comprises a frequency hopping bandwidth of a PUSCH, wherein the maximum value of the frequency hopping bandwidth is less than or equal to the value of the radio frequency bandwidth.

12. The method according to claim 8, wherein the RRC connection setup request further includes a first modulation scheme supported by the terminal device, the first modulation scheme including any one of binary phase shift keying, BPSK, QPSK,16 quadrature amplitude modulation, 16QAM, 64 quadrature amplitude modulation, 64QAM, and 256 quadrature amplitude modulation, 256 QAM;

the information of the second modulation and coding scheme comprises Modulation and Coding Strategy (MCS) indexes of a Physical Downlink Shared Channel (PDSCH), wherein the order of the modulation scheme corresponding to the MCS index of the PDSCH is less than or equal to the order of the first modulation scheme.

13. The method of claim 8, wherein the RRC connection setup request further comprises a maximum number of channel bonding M supported by the terminal device; the information of the second time-frequency resource comprises the channel binding number N of the PDSCH, wherein M and N are positive integers, and N is less than or equal to M.

14. The method of claim 8, wherein the RRC connection setup request further includes a radio frequency bandwidth supported by the terminal device; the information of the second time-frequency resource comprises frequency hopping bandwidth of the PDSCH, wherein the maximum value of the frequency hopping bandwidth is less than or equal to the value of the radio frequency bandwidth.

15. A terminal device is applied to an NB-IoT power system, and the terminal device is a terminal device in the NB-IoT power system, wherein the terminal device meets the NB-IoT power system communication requirement; the terminal device includes:

a sending unit, configured to send, by a terminal device, an RRC connection request message to a network device, where the RRC connection request message includes first indication information, and the first indication information is used to indicate a service type of the terminal device; the service types comprise delay sensitive service and delay insensitive service;

a receiving unit, configured to receive an RRC connection setup message sent by a network device, where the RRC connection setup message includes second indication information, and the second indication information is used to indicate a scheduling mode matched with the service type; the delay sensitive service corresponds to a non-scheduling mode, and the delay insensitive service corresponds to a downlink control information scheduling mode;

and the processing unit is used for carrying out data transmission with the network equipment according to the scheduling mode.

16. The terminal device of claim 15, wherein when the service type is a first service, the scheduling mode matched to the first service is a downlink control information scheduling mode; the processing unit is specifically configured to:

and according to the downlink control information sent by the network equipment, transmitting uplink or downlink data with the network equipment.

17. The terminal device of claim 15, wherein when the service type is a second service, the scheduling mode matched to the second service is an uplink non-scheduling mode; the second indication information comprises information of a first time-frequency resource and information of a first modulation and coding mode; the processing unit is specifically configured to:

and sending uplink data to the network equipment in the first modulation and coding mode on the first time-frequency resource according to the information of the first time-frequency resource and the information of the first modulation and coding mode.

18. The terminal device of claim 15, wherein when the service type is a second service, the scheduling mode matched to the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time-frequency resource and information of a second modulation and coding mode; the processing unit is specifically configured to:

and receiving downlink data sent by the network equipment on the second time frequency resource in the second modulation and coding mode according to the information of the second time frequency resource and the information of the second modulation and coding mode.

19. A network device applied to an NB-IoT power system, wherein the network device is a network device in the NB-IoT power system that meets the NB-IoT power system communication requirements; the network device includes:

a receiving unit, configured to receive an RRC connection establishment request sent by a terminal device, where the RRC connection establishment request includes first indication information, and the first indication information is used to indicate a service type of the terminal device; the service types comprise delay sensitive service and delay insensitive service;

a sending unit, configured to send an RRC connection setup message to the terminal device, where the RRC connection setup message includes second indication information, and the second indication information is used to indicate a scheduling mode matched with the service type; the delay sensitive service corresponds to a non-scheduling mode, and the delay insensitive service corresponds to a downlink control information scheduling mode;

and the processing unit is used for carrying out data transmission with the terminal equipment according to the scheduling mode.

20. The network device of claim 19, wherein when the service type is a first service, the scheduling mode matched to the first service is a downlink control information scheduling mode; the processing unit is specifically configured to:

21. The network device of claim 19, wherein when the service type is a second service, the scheduling mode matched to the second service is an uplink non-scheduling mode; the second indication information comprises information of a first time-frequency resource and information of a first modulation and coding mode; the processing unit is specifically configured to:

22. The network device of claim 19, wherein when the service type is a second service, the scheduling mode matched to the second service is a downlink non-scheduling mode; the second indication information comprises information of a second time frequency resource and information of a second modulation and coding mode; the processing unit is specifically configured to:

23. The network device of claim 21, wherein the RRC connection setup request further includes a first modulation scheme supported by the terminal device, the first modulation scheme including any one of binary phase shift keying, BPSK, QPSK,16 quadrature amplitude modulation, 16QAM, 64 quadrature amplitude modulation, 64QAM, and 256 quadrature amplitude modulation, 256 QAM;

24. The network device of claim 21, wherein the RRC connection setup request further includes a maximum number of channel bindings M supported by the terminal device; the information of the first time-frequency resource comprises a channel binding number N of a PUSCH, wherein M and N are positive integers, and N is less than or equal to M.

25. The network device of claim 21, wherein the RRC connection setup request further includes a radio frequency bandwidth supported by the terminal device; the information of the first time-frequency resource comprises a frequency hopping bandwidth of a PUSCH, wherein the maximum value of the frequency hopping bandwidth is less than or equal to the value of the radio frequency bandwidth.

26. The network device of claim 22, wherein the RRC connection setup request further includes a first modulation scheme supported by the terminal device, the first modulation scheme including any one of binary phase shift keying, BPSK, QPSK,16 quadrature amplitude modulation, 16QAM, 64 quadrature amplitude modulation, 64QAM, and 256 quadrature amplitude modulation, 256 QAM;

27. The network device of claim 22, wherein the RRC connection setup request further includes a maximum number of channel bonding M supported by the terminal device; the information of the second time-frequency resource comprises the channel binding number N of the PDSCH, wherein M and N are positive integers, and N is less than or equal to M.

28. The network device of claim 22, wherein the RRC connection setup request further includes a radio frequency bandwidth supported by the terminal device; the information of the second time-frequency resource comprises frequency hopping bandwidth of the PDSCH, wherein the maximum value of the frequency hopping bandwidth is less than or equal to the value of the radio frequency bandwidth.

29. A chip system, comprising at least one processor, a memory, and an interface circuit, the memory, the interface circuit, and the at least one processor interconnected by a line, the at least one memory having instructions stored therein; the method of any of claims 1-14 when executed by the processor.