CN109391424B

CN109391424B - Data sending method, equipment and system

Info

Publication number: CN109391424B
Application number: CN201710687217.8A
Authority: CN
Inventors: 贺传峰; 刘建琴
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2021-07-20
Anticipated expiration: 2037-08-11
Also published as: CN109391424A

Abstract

The embodiment of the invention discloses a data sending method, equipment and a system, relates to the technical field of communication, and aims to solve the problem that the blind detection times are increased when DCI is subjected to blind detection in the prior art. The specific scheme is as follows: the network equipment sends first Downlink Control Information (DCI) and second DCI to user equipment, wherein the first DCI is control information indicating a PDSCH, the PDSCH indicated by the first DCI is sent on a first type time unit containing SS block, the second DCI is also control information indicating the PDSCH, the PDSCH indicated by the second DCI is sent on a second type time unit not containing SS block, the first DCI and the second DCI have the same DCI format, the first DCI and the second DCI indicate different types of control information, the first DCI carries the first control information, and the second DCI carries the second control information. The embodiment of the invention is used for the data sending process.

Description

Data sending method, equipment and system

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a data sending method, equipment and a system.

Background

A fifth generation (5th-generation, 5G) mobile communication system (abbreviated as 5G system) is the most advanced mobile communication technology network at present, in the 5G system, in order to facilitate the ues in a cell to receive Synchronization Signals (SS) (such as Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSs) and Physical Broadcast Channel (PBCH)), the network device (such as a base station) may transmit SS to the ues through multiple beams (beams).

For example, a 5G system may implement SS transmission by defining SS cluster sets (burst sets), where one SS burst set includes one or more SS clusters (bursts), one SS burst includes one or more SS blocks, and one SS block is used for carrying transmission of one beam of SSs. As shown in fig. 1, two SS blocks are commonly carried in one slot (slot) for transmission, each SS block includes a PSS (symbol), an SSs (symbol), and a PBCH (symbol), where the SSs is located between the PBCH and the SSs.

In addition, in the 5G system, the network device may also send some other common information to the user equipment in a multi-beam manner, such as: remaining system information (RMSI), paging (paging) messages, etc., and these common messages are carried on a broadcast Physical Downlink Shared Channel (PDSCH). Specifically, the network device may transmit the SS and the common information by any one of the following manners: in the first mode, the PDSCH and the SS block are transmitted in the same time slot, for example: the PDSCH may be transmitted on the symbol on which the SS block is located; in the second mode, the PDSCH and the SS block are transmitted in different time slots.

When the PDSCH is transmitted, downlink control information (downlink control information) needs to be transmitted at the same time to indicate demodulation information related to the PDSCH. Since the PDSCH can be transmitted in the above two different manners, and the DCI formats (formats) corresponding to each manner are different, after receiving the DCI, the user equipment needs to use two different bit numbers to perform blind detection on the DCI, thereby increasing the number of blind detection times of the user equipment.

Disclosure of Invention

The embodiment of the invention provides a data transmission method, equipment and a system, which aim to solve the problem that blind detection times are increased when the existing user equipment blindly detects DCI.

In order to achieve the purpose, the embodiment of the invention adopts the following technical scheme:

in one aspect, an embodiment of the present invention provides a data sending method, where the method may include:

the network equipment sends first DCI to the user equipment and sends second DCI to the user equipment;

the first DCI is control information indicating a PDSCH, the PDSCH indicated by the first DCI is sent on a first type time unit, and the first type time unit comprises an SS block;

the second DCI is control information indicating the PDSCH, the PDSCH indicated by the second DCI is sent on a second type time unit, and the second type time unit does not contain SS block;

the first DCI and the second DCI have the same DCI format, the first DCI and the second DCI indicate different types of control information, the first DCI carries the first control information, and the second DCI carries the second control information.

Compared with the prior art, in the scheme provided by the embodiment of the invention, regardless of the mode of sending the PDSCH by the network equipment, the DCI with the unified DCI format is adopted to indicate the sending of the PDSCH, so that after the DCI is received by the user equipment, the DCI is blindly detected by the bit number corresponding to the DCI format, and the PDSCH is received according to the information contained in the DCI, that is, the user equipment only needs to blindly detect the DCI with one format, thereby reducing the number of blinding detections of the user equipment and further reducing the design complexity of the user equipment.

In combination with the above aspects, in one implementation, to increase resource utilization,

the SS block and the PDSCH may be transmitted on at least one same symbol when the PDSCH is transmitted on the first type time unit.

Optionally, the SS block and the PDSCH are transmitted on at least one same symbol of the same beam, such as: all symbols carrying SS block on a beam may be used to carry PDSCH, or some symbols carrying SS block may be used to carry PDSCH.

Therefore, the SS block and the PDSCH can be transmitted by adopting the same wave beam on the same symbol, and the resource utilization rate is improved.

With reference to the above aspect or the foregoing implementable manner, in an implementable manner, the first control information may include at least one of the following information:

the starting symbol of the PDSCH, the ending symbol of the PDSCH and indication information used for indicating whether the time frequency resources of the PDSCH contain the preset time frequency resources of the SS block.

The starting symbol of the PDSCH may refer to a symbol carrying the PDSCH first in the first type time unit, and the ending symbol of the PDSCH may refer to a symbol carrying the PDSCH last in the first type time unit.

The preset time-frequency resource of the SS block may be a time-frequency resource for transmitting the SS block, and in practical application, the preset time-frequency resource may be occupied by the SS block to transmit the SS block, or may be occupied by the PDSCH instead of the SS block to transmit the PDSCH.

The time frequency resource of the PDSCH including the preset time frequency resource of the SS block may refer to: the PDSCH is sent by using the preset time-frequency resource of the SS block, and the fact that the time-frequency resource of the PDSCH does not include the preset time-frequency resource of the SS block may refer to: and the PDSCH is sent without occupying the preset time-frequency resource of the SS block.

Optionally, the indication information for indicating whether the time frequency resource of the PDSCH includes the preset time frequency resource of the SS block is a numerical value of 1 bit, where the numerical value may be 0 or 1, for example: the time frequency resource of the PDSCH can be indicated to not contain the preset time frequency resource of the SS block by 0, and the time frequency resource of the PDSCH can be indicated to contain the preset time frequency resource of the SS block by 1.

Therefore, the user equipment can determine the time frequency resource position of the PDSCH in the first class of time unit according to the starting symbol of the PDSCH, the ending symbol of the PDSCH and/or the indication information of the preset time frequency resource for indicating whether the time frequency resource of the PDSCH contains the SS block, and receive the PDSCH from the time frequency resource position.

With reference to the foregoing aspect or any one of the foregoing implementation manners, in one implementation manner, to demodulate the received PDSCH, the method may further include:

the network device sends a data demodulation reference signal (DMRS) to the ue at a predetermined time-frequency resource location.

The DMRS is a reference signal for demodulating the PDSCH, and the predetermined time-frequency resource location may be a predetermined resource element in a resource block where the PDSCH is located, or a time-frequency resource on a predetermined symbol in a symbol where the PDSCH is located.

Therefore, the user equipment can acquire the DMRS at a preset time-frequency resource position and demodulate the PDSCH according to the acquired DMRS.

With reference to the above aspect, in yet another implementable manner, the second control information may contain configuration information of the DMRS, the configuration information including at least one of location information of the DMRS and number information of the DMRS;

the DMRS is a reference signal used for demodulating the PDSCH, and may include a first DMRS (front loaded DMRS) and an added DMRS (additional DMRS), where the front loaded DMRS may include 1-2 symbols, positions and numbers of the symbols where the additional DMRS is located are not fixed, and correspondingly, the DMRS configuration information may include information about positions and numbers of the additional DMRSs and information about the numbers and/or positions of the front loaded DMRSs.

The location information of the DMRS may be: the identification of the symbol where the DMRS is located or a bit map, wherein the bit map comprises at least one bit, the bit map corresponds to the candidate time-frequency resource position of the DMRS, and part or all of the candidate time-frequency resource position of the DMRS is a resource position for bearing the DMRS.

Therefore, the user equipment can acquire the DMRS according to the configuration information of the DMRS and demodulate the PDSCH according to the acquired DMRS.

In one aspect, an embodiment of the present invention provides a network device, including:

a transmitting unit, configured to transmit a first DCI to a user equipment, and transmit a second DCI to the user equipment;

The specific implementation manner of the network device may refer to the behavior function of the network device in the data transmission method provided in the foregoing aspect or the possible implementation manners of the foregoing aspect, and details are not described here again. Therefore, the network device provided by this aspect can achieve the same advantageous effects as those of the above-described aspect.

On one hand, embodiments of the present invention provide a network device, where the network device may implement the functions performed by the network device in the foregoing method embodiments, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions.

In one possible design, the network device includes a processor and a communication interface, and the processor is configured to support the network device to perform the corresponding functions of the method. The communication interface is used for supporting communication between the network equipment and other network elements. The network device may also include a memory, coupled to the processor, that stores program instructions and data necessary for the network device.

In one aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the network device, where the computer software instructions include a program for executing the solution described in the above aspect.

In one aspect, an embodiment of the present invention provides a computer program product, where the computer program product stores computer software instructions for the network device, and the computer software instructions include a program for executing the solution described in the above aspect.

In one aspect, an embodiment of the present invention provides an apparatus, which exists in the form of a chip product, and the apparatus includes a processor and a memory, where the memory is configured to be coupled to the processor and store necessary program instructions and data of the apparatus, and the processor is configured to execute the program instructions stored in the memory, so that the apparatus performs functions corresponding to the network device in the foregoing method.

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

the method comprises the steps that user equipment receives first Downlink Control Information (DCI) sent by network equipment, wherein the first DCI is control information indicating a Physical Downlink Shared Channel (PDSCH), the PDSCH indicated by the first DCI is sent on a first time unit, and the first time unit comprises a synchronization signal block (SS block);

the user equipment receives second DCI sent by the network equipment, wherein the second DCI is control information used for indicating a PDSCH, the PDSCH with the second indication is sent on a second type time unit, and the second type time unit does not contain SS block;

the user equipment receives the PDSCH according to the first DCI;

the user equipment receives the PDSCH according to the second DCI;

the first DCI and the second DCI have the same downlink control information format DCI format;

the first DCI carries first control information, the second DCI carries second control information, and the first DCI and the second DCI indicate different types of control information.

Compared with the prior art, in the scheme provided by the embodiment of the invention, regardless of the mode of sending the PDSCH by the network equipment, the DCI with the unified DCI format is adopted to indicate the sending of the PDSCH, after the DCI is received by the user equipment, the DCI is blindly detected by the user equipment by adopting the bit number corresponding to the DCI format, and the PDSCH is received according to the information contained in the DCI, that is, the user equipment only needs to blindly detect the DCI with one format, so that the blind detection times of the user equipment are reduced, and the design complexity of the user equipment is further reduced.

the SS block and the PDSCH are transmitted on at least one same symbol when the PDSCH is transmitted on a first type of time unit.

and the user equipment receives the DMRS sent by the network equipment at a preset time-frequency resource position.

the DMRS is a reference signal used for demodulating the PDSCH, and may include a front loaded DMRS and an additional DMRS, where the front loaded DMRS may include 1-2 symbols, positions and numbers of the symbols where the additional DMRS is located are not fixed, and correspondingly, the DMRS configuration information may include information about positions and numbers of the additional DMRS, and information about the numbers and/or positions of the front loaded DMRS.

In another aspect, an embodiment of the present invention provides a user equipment, including:

a receiving unit, configured to receive first downlink control information DCI sent by a network device, where the first DCI is control information indicating a physical downlink shared channel PDSCH, the PDSCH indicated by the first DCI is sent in a first class time unit, and the first class time unit includes a synchronization signal block SS block;

receiving second DCI sent by the network equipment, wherein the second DCI is control information used for indicating a PDSCH, the PDSCH with the second indication is sent on a second type time unit, and the second type time unit does not contain SS block;

an obtaining unit, configured to receive the PDSCH according to the first DCI;

and receiving the PDSCH according to the second DCI;

The specific implementation manner of the ue may refer to the behavior function of the ue in the data transmission method provided in the foregoing aspect or the possible implementation manner of the foregoing aspect, and is not described herein again. Therefore, the user equipment provided by the aspect can achieve the same beneficial effects as the aspect described above.

In another aspect, an embodiment of the present invention provides a user equipment, where the user equipment may implement the function executed by the user equipment in the foregoing method embodiment, and the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions.

In one possible design, the structure of the ue includes a processor and a transceiver, and the processor is configured to support the ue to perform the corresponding functions of the method. The transceiver is for supporting communication between the user equipment and other network elements. The user equipment may also include a memory for coupling with the processor that retains program instructions and data necessary for the user equipment.

In yet another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the user equipment, where the computer software instructions include a program for executing the scheme of the above aspect.

In yet another aspect, an embodiment of the present invention provides a computer program product, which stores computer software instructions for the user equipment, where the computer software instructions include a program for executing the solution described in the above aspect.

In still another aspect, an embodiment of the present invention provides an apparatus, which exists in the form of a chip product, and the apparatus includes a processor and a memory, where the memory is configured to be coupled to the processor and store necessary program instructions and data of the apparatus, and the processor is configured to execute the program instructions stored in the memory, so that the apparatus performs the functions corresponding to the user equipment in the method.

In another aspect, an embodiment of the present invention provides a data transmission system, including: a network device according to the above aspect or any possible implementation manner of the above aspect, and a user equipment according to the above aspect or any possible implementation manner of the above aspect.

Drawings

FIG. 1 is a schematic diagram of a conventional SS block;

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

fig. 3 is a schematic diagram illustrating a network device according to an embodiment of the present invention;

fig. 4 is a schematic composition diagram of a ue according to an embodiment of the present invention;

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

fig. 5a is a schematic diagram of transmitting PDSCH and SS block according to an embodiment of the present invention;

fig. 5b is a schematic diagram of another PDSCH and SS block transmission according to the embodiment of the present invention;

fig. 5c is a schematic diagram of another PDSCH and SS block transmission according to an embodiment of the present invention;

fig. 6 is a flowchart of another data transmission method according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a network device according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an apparatus according to an embodiment of the present invention;

fig. 9 is a schematic composition diagram of a ue according to an embodiment of the present invention;

fig. 10 is a schematic composition diagram of an apparatus according to an embodiment of the present invention.

Detailed Description

The embodiment of the invention provides a data transmission method, which has the following basic principles: no matter what mode is adopted by the network equipment to send the PDSCH, the unified DCI format is adopted to indicate the control information of the PDSCH, so that after the DCI is received by the user equipment, the DCI is received only by adopting the bit number corresponding to the DCI format, and the PDSCH is received according to the information contained in the DCI, namely, the user equipment only needs to blindly detect the DCI of one format, the number of blindly detecting times of the user equipment is reduced, and the design complexity of the user equipment is further reduced.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The data transmission method provided in the embodiment of the present invention may be applied to the communication system shown in fig. 2, where the communication system may be a fifth generation (5G) mobile communication system, may also be a Long Term Evolution (LTE) system, and may also be another actual mobile communication system, which is not limited.

As shown in fig. 2, the communication system may include: user equipment, network equipment, and a Data Network (DN). The user equipment in fig. 2 may be configured to connect to a network device deployed by an operator through a wireless air interface, and then access to a data network; the network device may include an access network device and a core network device.

The User Equipment (UE) in fig. 2 may be: a cell phone, a computer, a wireless phone, a Session Initiation Protocol (SIP) phone, a smart phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a computer, a laptop computer, a handheld communication device, a handheld computing device, a satellite radio device, a wireless modem card, a Set Top Box (STB), a Customer Premises Equipment (CPE), and/or other devices for communicating over a wireless system. The access network equipment is mainly used for realizing wireless physical layer functions, resource scheduling and wireless resource management, wireless access control and mobility management functions; the access network device may be AN Access Network (AN)/Radio Access Network (RAN) device, a network composed of a plurality of 5G-AN/5G-RAN nodes, or a base station (nodeB, NB), AN evolved base station (eNB), where the 5G-AN/5G-RAN node may be: an access node, a next generation base station (gNB), a Transmission Receive Point (TRP), a Transmission Point (TP), or some other access node. The core network equipment is mainly used for equipment registration, security authentication, mobility management and location management of the user equipment, and establishing a channel with the user equipment, and forwarding a data packet between the user equipment and an external data network on the channel; specifically, the core network device may include: access and mobility management function (AMF), Session Management Function (SMF), Policy Control Function (PCF), Mobility Management Entity (MME), Policy and Charging Rules Function (PCRF), User Plane Function (UPF), which may work independently or may be combined together to implement some control functions, such as: the combination of these functional units can complete access control and mobility management functions such as access authentication, security encryption, location registration, etc. of the user equipment, session management functions such as establishment, release and change of a user plane transmission path, and functions of analyzing data (such as congestion) related to some slices (slices) and data related to the user equipment.

In particular, the network device of fig. 2 may include the components shown in fig. 3. Fig. 3 is a schematic diagram illustrating a network device according to an embodiment of the present invention, and as shown in fig. 3, the network device may include at least one processor 31, a memory 32, a communication interface 33, and a communication bus 34. It should be noted that the device structure shown in fig. 3 does not constitute a limitation of the network device, and may include more or less components than those shown in the drawings, or combine some components, or arrange different components, which is not limited by the embodiment of the present invention. The following describes each component of the network device in detail with reference to fig. 3:

the processor 31 is a control center of the network device, and may be a single processor or a collective term for multiple processing elements. For example, the processor 31 is a Central Processing Unit (CPU), or may be an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention, such as: one or more microprocessors (digital signal processors, DSPs), or one or more Field Programmable Gate Arrays (FPGAs). The processor 31 may perform various functions of the network device by running or executing software programs stored in the memory 32, and calling data stored in the memory 32, among other things.

In particular implementations, processor 31 may include one or more CPUs such as CPU0 and CPU1 shown in fig. 3 as one example. In particular implementations, network device may include multiple processors, such as processor 31 and processor 35 shown in FIG. 3, for example, as an embodiment. Each of these processors may be a single-Core Processor (CPU) or a multi-Core Processor (CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

The memory 32 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 32 may be separate and coupled to the processor 31 via a communication bus 34. The memory 32 may also be integrated with the processor 31. The memory 32 is used for storing software programs for executing the schemes provided by the embodiments of the present invention, and is controlled by the processor 31 to execute the schemes.

A communication interface 33 for communicating with other devices or a communication network, the communication interface 33 may include a receiving unit implementing a receiving function, and a transmitting unit implementing a transmitting function. Alternatively, the communication interface 33 may be a radio frequency module composed of an antenna array.

The communication bus 34 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 3, but this does not mean only one bus or one type of bus.

The network device shown in fig. 3 may execute the functions executed by the network device in the data transmission method provided by the embodiment of the present invention, such as: the communication interface 33 in the network device may be configured to send, to the user equipment, first DCI indicating control information of a PDSCH, and second DCI indicating control information of the PDSCH, where the PDSCH indicated by the first DCI is sent on a first class time unit that includes an SS block, the PDSCH indicated by the second DCI is sent on a second class time unit that does not include the SS block, the first DCI and the second DCI have the same DCI format, the first DCI and the second DCI indicate different types of control information, the first DCI carries the first control information, and the second DCI carries the second control information.

In particular, the user equipment in fig. 2 may contain the components shown in fig. 4. Fig. 4 is a schematic composition diagram of a user equipment according to an embodiment of the present invention, and as shown in fig. 4, the user equipment may include at least one processor 41, a memory 42, a transceiver 43, and a communication bus 44. It should be noted that the device structure shown in fig. 4 does not constitute a limitation of the user equipment, and may include more or less components than those shown in the drawings, or combine some components, or arrange different components, which is not limited by the embodiment of the present invention. The following describes each component of the user equipment in detail with reference to fig. 4:

the processor 41 is a control center of the user equipment, and may be a single processor or a collective term for a plurality of processing elements. For example, processor 41 is a CPU, may be an ASIC, or may be one or more integrated circuits configured to implement embodiments of the present invention, such as: one or more DSPs, or one or more FPGAs. Processor 41 may perform various functions of the user equipment by, among other things, running or executing software programs stored in memory 42 and invoking data stored in memory 42.

In particular implementations, processor 41 may include one or more CPUs such as CPU0 and CPU1 shown in fig. 4 as one example. In particular implementations, the user equipment may include multiple processors, such as processor 41 and processor 45 shown in fig. 4, as one embodiment. Each of these processors may be a single-CPU or a multi-CPU. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

Memory 42 may be, but is not limited to, a ROM or other type of static storage device that can store static information and instructions, a RAM or other type of dynamic storage device that can store information and instructions, an EEPROM, a CD-ROM or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 42 may be separate and coupled to the processor 41 via a communication bus 44. The memory 42 may also be integrated with the processor 41. The memory 42 is used for storing software programs for executing the schemes provided by the embodiments of the present invention, and is controlled by the processor 41 to execute the software programs.

The transceiver 43 is used for communicating with other devices or communication networks, and the transceiver 43 may include a receiving unit to implement a receiving function and a transmitting unit to implement a transmitting function. Alternatively, the transceiver 43 may be a radio frequency module composed of an antenna array.

The communication bus 44 may be an ISA bus, a PCI bus, an EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 4, but this does not indicate only one bus or one type of bus.

It should be noted that fig. 4 is only a diagram illustrating a user equipment, and the user equipment may further include components such as a display, a sensor, and a WiFi module, in addition to the components shown in fig. 4, which is not limited in this embodiment of the present invention.

The ue shown in fig. 4 may perform the functions performed by the ue in the data transmission method provided in the embodiment of the present invention, such as: the transceiver 44 in the user equipment may be configured to receive a first DCI indicating control information of a PDSCH sent by the network device and a second DCI indicating control information of the PDSCH, where the PDSCH indicated by the first DCI is sent on a first class time unit containing an SS block, the PDSCH indicated by the second DCI is sent on a second class time unit not containing the SS block, the first DCI and the second DCI have the same DCI format, the first DCI and the second DCI indicate different types of control information, the first DCI carries the first control information, and the second DCI carries the second control information; the processor 41 in the user equipment may be configured to receive the PDSCH according to the first DCI and to receive the PDSCH according to the second DCI.

The following describes a data transmission method according to an embodiment of the present invention in detail with reference to the communication system shown in fig. 2, where the apparatus in the following method embodiment may correspondingly include the constituent elements shown in fig. 3 and fig. 4. It should be noted that although a logical order is shown in the method flow diagrams described below, in some cases, the steps shown or described may be performed in an order different than here.

Fig. 5 is a flowchart of a data transmission method provided by an embodiment of the present invention, which is executed by the user equipment and the network equipment shown in fig. 2 interactively, as shown in fig. 5, the method may include:

step 501: the network equipment sends first DCI to the user equipment, and the user equipment receives the first DCI sent by the network equipment and receives the PDSCH according to the first DCI.

The network device may be the network device shown in fig. 2, and the user equipment may be the user equipment shown in fig. 2.

The first DCI may be control information indicating a PDSCH, and the first DCI may adopt any one of various existing DCI formats, which is not described herein again.

The first DCI may indicate multiple types of control information, for example, the first DCI may carry first control information including a starting symbol of a PDSCH and an ending symbol of the PDSCH and/or indicating information indicating whether a time-frequency resource of the PDSCH includes a preset time-frequency resource of an SS block, where the following description may be referred to for a related description of the first control information, and is not repeated here.

The PDSCH indicated by the first DCI may be transmitted in a first type of time unit including SS block, that is, the PDSCH and the SS block may be simultaneously transmitted in the first type of time unit, for example: all symbols carrying SS block on a beam may be used to carry PDSCH, or some symbols carrying SS block may be used to carry PDSCH.

The first type of time unit may be a time slot, a subframe, a time interval, and the like, and the first type of time unit includes at least one symbol, where the symbol may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, the symbol may be used to carry common information, a synchronization signal, a channel, or data, and the number of symbols included in the first type of time unit may be determined according to a communication protocol, for example: can contain 7, 14 and 28 symbols.

In each embodiment of the present invention, an SS block may include, as shown in fig. 1, a PSS with one symbol, an SSs with one symbol, and a PBCH with two symbols, where an arrangement position of each symbol in the SS block includes, but is not limited to, the form shown in fig. 1, and may also be in other arrangement forms, which is not limited in this embodiment of the present invention.

Optionally, the network device may send, to the user equipment, a first DCI through a Physical Downlink Control Channel (PDCCH), where the first DCI may be sent in a first type of time unit where the PDSCH is located, where the first DCI is: the first DCI may be transmitted in a symbol before the symbol in which the PDSCH is located, or may be transmitted in a time unit before the first type time unit in which the PDSCH is located.

Optionally, the receiving, by the user equipment, the PDSCH according to the first DCI includes:

and the user equipment blindly detects the DCI according to the bit number corresponding to the DCI format of the first DCI, acquires first control information from the first DCI after the blind detection is successful, and receives the PDSCH from the first time unit according to the first control information.

Specifically, the user equipment may refer to the prior art for blind detection of the DCI according to the bit number corresponding to the DCI format of the first DCI, which is not described herein again.

The user equipment may acquire the first control information from the first DCI from a field in which the first control information is located.

The manner of receiving the PDSCH from the first type time unit according to the first control information may refer to the following related description, and is not repeated herein.

It should be noted that, in step 501, the process of receiving the PDSCH by the user equipment according to the first DCI is an optional process, that is, after receiving the first DCI, the user equipment only blindly detects the DCI according to the bit number corresponding to the DCI format of the first DCI to obtain the first DCI, but does not receive the PDSCH according to the first DCI, or after receiving the first DCI, the user equipment blindly detects the DCI according to the bit number corresponding to the DCI format of the first DCI to obtain the first DCI, and receives the PDSCH according to the first DCI.

For example, as shown in fig. 5a, a first class of time cells comprises 14 symbols: symbol 0 to symbol 13, the network device may send PDSCH and SS block together in this type of time unit, for example: and sending DCI for indicating the PDSCH to be sent in the first type time unit at a symbol 0, sending the PDSCH and one SS block at symbols 2-5, and sending the PDSCH and one SS block at symbols 8-11, wherein after receiving the DCI and successfully performing blind detection, the user equipment receives the PDSCH and the SS block from the first type time unit according to the indication of the DCI.

Alternatively, as shown in fig. 5b, the network device may send PDSCH and SS block on this type of time unit, such as: and sending DCI used for indicating the PDSCH to be sent in the first type time unit at a symbol 0, sending SS block at a symbol 2-a symbol 5, sending the PDSCH at a symbol 7-a symbol 11, and receiving the PDSCH and the SS block from the first type time unit according to the indication of the DCI after the user equipment receives the DCI and successfully performs blind detection.

Step 502: and the network equipment sends second DCI to the user equipment, and the user equipment receives the second DCI sent by the network equipment and receives the PDSCH according to the second DCI.

The second DCI may be control information indicating a PDSCH, the second DCI may use the same DCI format as the first DCI, the second DCI may also indicate multiple types of control information, except that the second DCI and the first DCI indicate different types of control information, where the different types of control information may include control information with different meanings, for example, control information indicating DMRS configuration information and control information indicating start and end symbols of the PDSCH are different types of control information. Optionally, the second DCI may carry second control information including configuration information of the DMRS. Specifically, the following description may be referred to for the description of the second control information, and is not repeated herein.

The PDSCH indicated by the second DCI may be transmitted in a second type of time unit that does not include SS block, that is, the PDSCH and SS block may be transmitted in different time units, for example: SS block may be sent on time element 1, PDSCH may be sent on time element 2, and time elements 1 and 2 are different time elements.

Wherein, the second kind of time unit can refer to the related description of the first kind of time unit, such as: the second time unit may be a time slot, a subframe, a time interval, etc., and the second type of time unit also includes at least one symbol, where the symbol may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and the symbol may be used to carry common information, a synchronization signal, a channel, or data, etc., and the number of symbols included in the second type of time unit may be determined according to a communication protocol, such as: can contain 7, 14 and 28 symbols.

Optionally, the network device may send, to the user equipment, a second DCI through the PDCCH, where the second DCI may be sent in a second type time unit where the PDSCH is located, where the second DCI is as follows: the second DCI may be transmitted in a symbol before the symbol in which the PDSCH is located, or may be transmitted in a time unit before the second type time unit in which the PDSCH is located.

Optionally, the receiving, by the user equipment, the PDSCH according to the second DCI includes:

and the user equipment blindly detects the DCI according to the bit number corresponding to the DCI format of the second DCI, acquires second control information from the second DCI after the blind detection is successful, and receives the PDSCH from the second type time unit according to the second control information.

Specifically, the user equipment may refer to the prior art for blind detection of the DCI according to the bit number corresponding to the DCI format of the second DCI, which is not described herein again.

The user equipment may acquire the second control information from the second DCI from a field in which the second control information is located.

The manner of receiving PDSCH from the second type time unit according to the second control information may refer to the following related description, and is not repeated herein.

It should be noted that, in step 502, the process of receiving the PDSCH by the user equipment according to the second DCI is an optional process, that is, after receiving the second DCI, the user equipment only blindly detects the DCI according to the bit number corresponding to the DCI format of the second DCI to obtain the second DCI, but does not receive the PDSCH according to the second DCI, or after receiving the second DCI, the user equipment blindly detects the DCI according to the bit number corresponding to the DCI format of the second DCI to obtain the second DCI, and receives the PDSCH according to the second DCI.

For example, as shown in fig. 5c, a first class of time cells comprises 7 symbols: symbol 0-symbol 6, a second type of time cell contains 7 symbols: the network equipment sends DCI used for indicating the PDSCH to be sent in the first type time unit at the symbol 0 of the first type time unit, sends the PDSCH at the symbol 1 to the symbol 5 of the first type time unit, and sends SS block at the symbol 2 to the symbol 5 of the second type time unit, and after the user equipment receives the DCI and the blind detection is successful, the PDSCH is received from the first type time unit according to the indication of the DCI, and the SS block is received from the second type time unit.

It should be noted that, a field of the first DCI carrying the first control information may be the same as a field of the second DCI carrying the second control information, such as: first control information may be carried in bits 1-2 of the first DCI, and second control information may be carried in bits 1-2 of the second DCI; or, a field of the first DCI carrying the first control information may be different from a field of the second DCI carrying the second control information, without limitation.

The field carrying the first control information and the second control information may be carried by an idle field in DCI, or may be a field configured in a network preset.

It should be noted that, in addition to the sequential execution shown in fig. 5, in an implementation manner, step 502 may be executed first, and then step 501 may be executed; in yet another implementation manner, step 501 and step 502 may also be performed simultaneously; in still another implementation manner, only step 501 or step 502 may be performed, and is not limited herein.

In addition, the scheme shown in fig. 5 is only an exemplary scheme in a PDSCH and SS block transmission scenario, and when a PDSCH and other signals or channels are transmitted, the DCI format for indicating the transmission of the PDSCH may also be adopted, which is not described herein again.

Compared with the prior art, in the scheme shown in fig. 5, regardless of the method used by the network device to transmit the PDSCH, the DCI with the unified DCI format is used to indicate the transmission of the PDSCH, so that after the DCI is received by the user equipment, the DCI is blind-checked only by using the bit number corresponding to the DCI format, and the PDSCH is received according to the information contained in the DCI, that is, the user equipment only needs to blind-check the DCI with one format, thereby reducing the blind-check times of the user equipment, and further reducing the design complexity of the user equipment.

Optionally, the first control information may include at least one of the following information:

a starting symbol of the PDSCH and an ending symbol of the PDSCH, wherein the starting symbol of the PDSCH may refer to: the PDSCH symbol is first carried in time order in the first type time unit, and the PDSCH end symbol may refer to: the symbols of the PDSCH are carried last in time order in the time units of the first type. It should be noted that the first type time unit may include at least one set of a starting symbol of the PDSCH and an ending symbol of the PDSCH, where the starting symbol of the PDSCH, a symbol between the starting symbol of the PDSCH and the ending symbol of the PDSCH in each set, and the ending symbol of the PDSCH form a symbol that continuously carries the PDSCH, such as: as shown in fig. 5a, the two sets of the starting symbol of PDSCH and the ending symbol of PDSCH are included: the starting symbol of PDSCH is 2 and the ending character is 5, and the starting character of PDSCH is 8 and the ending character is 11.

And indicating information used for indicating whether the time frequency resources of the PDSCH contain the preset time frequency resources of the SS block.

Correspondingly, the receiving, by the user equipment, the PDSCH from the first class time unit according to the first control information may include at least one of the following manners:

the first method is as follows: the first control information includes a starting symbol of the PDSCH and an ending symbol of the PDSCH, and the user equipment receives the PDSCH from the starting symbol of the PDSCH to the ending symbol of the PDSCH according to the starting symbol of the PDSCH and the ending symbol of the PDSCH.

For example, as shown in fig. 5a, the PDSCH has a start symbol of 2 and an end character of 5, and the PDSCH has a start character of 8 and an end character of 11. After receiving the DCI and blindly detecting the DCI, the ue may receive the PDSCH from symbol 2 to symbol 5 and receive the PDSCH from symbol 8 to symbol 11 according to the indication of the first control information in the DCI.

The second method comprises the following steps: the first control information comprises indication information used for indicating whether the time frequency resources of the PDSCH comprise the preset time frequency resources of the SS block or not, the user equipment determines whether the time frequency resources of the PDSCH comprise the preset time frequency resources of the SS block or not according to the indication information used for indicating whether the time frequency resources of the PDSCH comprise the preset time frequency resources of the SS block or not, and when the time frequency resources of the PDSCH comprise the preset time frequency resources of the SS block, the PDSCH is received from the preset time frequency resources of the SS block.

For example, if the preset time-frequency resource 1 of the SS block is the symbol 1-symbol 5 in the first-class time unit shown in fig. 5c, the indication information included in the first control information may be 1, which is used to indicate that the time-frequency resource of the PDSCH includes the preset time-frequency resource 1 of the SS block, after the user equipment obtains the indication information, it is determined that the symbol 1-symbol 5 in the first-class time unit carries the PDSCH, and the PDSCH is received from the symbol 1-symbol 5.

Further optionally, when the PDSCH is transmitted in the first type time unit, in order to demodulate the received PDSCH, the method further includes:

and the network equipment transmits the DMRS to the user equipment on a preset time-frequency resource position.

In this way, after obtaining the location of the PDSCH according to the first control information, the user equipment may obtain the DMRS from the predetermined resource element in the resource block where the PDSCH is located or the time-frequency resource on the predetermined symbol in the symbol where the PDSCH is located, and demodulate the received PDSCH according to the obtained DMRS.

Optionally, the second control information may include configuration information of the DMRS, where the configuration information includes at least one of location information of the DMRS and information of the number of the DMRS.

The DMRS is a reference signal used for demodulating the PDSCH, and may include a front loaded DMRS and an additional DMRS, where the front loaded DMRS may include 1-2 symbols, positions and numbers of the symbols where the additional DMRS is located are not fixed, and correspondingly, the DMRS configuration information may include information about positions and numbers of the additional DMRS and information about the numbers and/or positions of the front loaded DMRS.

The location information of the DMRS may be: an identification of a symbol where the DMRS is located, or a bitmap (bitmap);

the bit map comprises at least one bit, the bit map corresponds to a candidate time-frequency resource position of the DMRS, and part or all of the candidate time-frequency resource position of the DMRS is a resource position for bearing the DMRS, that is, the candidate time-frequency resource position of the DMRS may be used to transmit the DMRS.

The identifier of the symbol where the DMRS is located is used to identify the symbol where the DMRS is located, and the identifier may be a number or a letter or other symbols, without limitation, such as: the number 1 may be used to identify that the symbol where the DMRS is located is symbol 1.

The bit map may include at least one bit, each bit may be identified by 0 or 1, the bit map may correspond to a candidate time-frequency resource location of the DMRS, a part or all of the candidate time-frequency resource location of the DMRS may be resource locations for carrying the DMRS, and the candidate time-frequency resource location may not be in the same symbol as the PDSCH, where the candidate time-frequency resource location of the DMRS and a correspondence between the bit map and the candidate time-frequency resource location of the DMRS may be pre-configured to the user equipment by the network device. Such as: the candidate time frequency resource positions of the DMRS are 4: position 1, position 2, position 3, and position 4, the bitmap may contain 2 bits, i.e., the bitmap may have 4 representations: 00. 01, 10, and 11, wherein 00 may correspond to position 1, 01 may correspond to position 2, 10 may correspond to position 3, and 11 may correspond to position 4, and in this case, if the position information of the DMRS is 00, it is identified that the position where the DMRS is located is position 1.

Therefore, the user equipment determines the position of the DMRS according to the position information and the number of the DMRS in the second control information, acquires the DMRS from the position of the DMRS, and demodulates the received PDSCH according to the DMRS.

Optionally, the receiving, by the ue, the PDSCH from the second type time unit according to the second control information includes:

and the user equipment determines a starting symbol of the PDSCH according to the CORESET configuration information, determines an ending symbol of the PDSCH according to the time unit type of the second type time unit, and receives the PDSCH from the determined starting symbol of the PDSCH to the ending symbol of the PDSCH.

The above-mentioned manner in which the ue determines the starting symbol of the PDSCH according to the CORESET configuration information and determines the ending symbol of the PDSCH according to the type of the time unit of the second type of time unit may refer to the prior art, and is not described herein again.

Taking the network device as the base station, the user equipment as the UE, and the first DCI and the second DCI all adopt DCI format1 as an example, where DCI format1 may be any existing DCI format, and details of the scheme provided in the embodiment of the present invention are described below.

Fig. 6 is a further data transmission method according to an embodiment of the present invention, as shown in fig. 6, where the data transmission method may include:

step 601: and the base station determines that the DCI uniformly adopts the DCI format 1.

That is, the base station adopts the format of DCI format1 no matter under which condition the DCI is issued to the UE.

The base station may determine that the DCI uniformly adopts the DCI format1 according to the pre-configuration or the network configuration or the protocol specification.

The preconfiguration may refer to: the configuration carried in the special configuration signaling, and the configuration can be refreshed and changed; the protocol specification may refer to: the standard specified by the communication protocol and cannot be refreshed or changed.

Step 602: the base station configures the first DCI as DCI format 1.

The first DCI is control information indicating a PDSCH, and the first DCI may carry indication information including a starting symbol of the PDSCH and an ending symbol of the PDSCH, or indication information indicating whether a time-frequency resource of the PDSCH includes a preset time-frequency resource of an SS block, or the starting symbol of the PDSCH and the ending symbol of the PDSCH, and the first control information indicating the indication information indicating whether the time-frequency resource of the PDSCH includes the preset time-frequency resource of the SS block.

The first DCI and the first control information may refer to the related description in fig. 5, and are not described herein again.

The manner in which the base station configures the first DCI into the DCI format1 may refer to the prior art, and is not described herein again.

Step 603: the base station sends the first DCI to the UE, and the UE receives the first DCI from the base station and receives the PDSCH according to the first DCI.

In step 603, reference may be made to the related description of step 501, which is not described herein again.

Wherein the receiving, by the UE, the PDSCH according to the first DCI may include:

the UE blindly detects the first DCI by using the bit number corresponding to the DCI format1, and receives the PDSCH according to the first control information carried by the first DCI.

For the UE to blindly detect the first DCI by using the bit number corresponding to the DCI format1, reference may be made to the prior art, which is not described herein again.

The manner in which the UE receives the PDSCH according to the first control information carried in the first DCI may refer to the relevant description in fig. 5, and is not described herein again.

Step 604: and the base station configures DCI format1 with the format of the second DCI.

The second DCI is control information indicating a PDSCH, and the second DCI may carry second control information including configuration information of the DRMS.

The second DCI and the second control information may refer to the related description in fig. 5, and are not described herein again.

The manner in which the base station configures the second DCI into the DCI format1 may refer to the prior art, and is not described herein again.

Step 605: and the base station sends the second DCI to the UE, and the UE receives the second DCI from the base station and receives the PDSCH according to the second DCI.

Step 605 may refer to the related description of step 502, which is not described herein again.

Wherein the receiving, by the UE, the PDSCH according to the second DCI may include:

and the UE blindly detects second DCI by using the bit number corresponding to the DCI format1 and carries second control information according to the second DCI.

The UE may refer to the prior art in a manner of blindly detecting the second DCI by using the bit number corresponding to the DCI format1, and details are not repeated herein.

The manner in which the UE receives the PDSCH according to the second control information carried in the second DCI may refer to the relevant description in fig. 5, and is not described herein again.

It should be noted that, in the scheme shown in fig. 6, the steps 602 to 603 and the steps 604 to 605 may be executed simultaneously, or may be executed according to the sequence shown in fig. 6, or may be executed first through the steps 602 to 603 and then through the steps 604 to 605, or may be executed only through the steps 602 to 603 or the steps 604 to 605, which is not limited.

The above description mainly introduces the scheme provided by the embodiment of the present invention from the perspective of interaction between the nodes. It is understood that each node, for example, a network device, a user equipment, etc., contains corresponding hardware structures and/or software modules for performing each function in order to realize the functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, in conjunction with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

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

In the case of dividing the functional modules by corresponding functions, fig. 7 shows a schematic diagram of a possible composition of a network device, which can be used to execute the functions of the network device mentioned in the above embodiments. As shown in fig. 7, the network device may include: a transmitting unit 70;

the sending unit 70 is configured to support the network device to execute step 501, step 502, step 603, and step 605.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The network device provided by the embodiment of the invention is used for executing the data transmission method, so that the same effect as the data transmission method can be achieved.

In the case of an integrated unit, fig. 8 shows an apparatus, which exists in the product form of a chip, for performing the functions of the network device in the above embodiments, and as shown in fig. 8, the apparatus may include: a processing module 80 and a communication module 81.

The processing module 80 is used to control and manage the actions of the device, e.g., the processing module 80 is used to support the device to perform other processes of the techniques described herein. The communication module 81 is used to support communication between the apparatus and other network entities, for example, the functional modules or network entities shown in fig. 2. The apparatus may also include a storage module 82 for storing program codes and data for the apparatus.

The processing module 80 may be a processor or a controller, among others. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module 81 may be a transceiver circuit or a communication interface, etc. The storage module 82 may be a memory.

When the processing module 80 is a processor, the communication module 81 is a communication interface, and the storage module 82 is a memory, the apparatus according to the embodiment of the present invention may be the apparatus shown in fig. 3.

In the case of dividing the functional modules according to the respective functions, fig. 9 shows a possible composition diagram of the user equipment, which can be used to execute the functions of the user equipment mentioned in the above embodiments. As shown in fig. 9, the user equipment may include: a receiving unit 90, an acquiring unit 91;

the receiving unit 90 is configured to support the user equipment to perform step 501, step 502, step 603, and step 605.

An obtaining unit 91, configured to support the user equipment to perform step 501, step 502, step 603, and step 605.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The user equipment provided by the embodiment of the invention is used for executing the data transmission method, so that the same effect as the data transmission method can be achieved.

In the case of an integrated unit, fig. 10 shows a device in the form of a chip product for performing the functions of the user equipment in the above-described embodiments. As shown in fig. 10, the apparatus may include: a processing module 100 and a communication module 101.

The processing module 100 is used to control and manage the actions of the device, e.g., the processing module 100 is used to support the device to perform other processes of the techniques described herein. The communication module 101 is used to support communication between the apparatus and other network entities, for example, the functional modules or network entities shown in fig. 2. The apparatus may also include a storage module 102 for storing program code and data for the apparatus.

The processing module 100 may be a processor or a controller, among others. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module 101 may be a communication interface, a transceiver, etc. The storage module 102 may be a memory.

When the processing module 100 is a processor, the communication module 101 is a transceiver, and the storage module 102 is a memory, the apparatus according to the embodiment of the present invention may be the apparatus shown in fig. 4.

In the following, a further embodiment of the invention will be described. The embodiment includes a method embodiment and an apparatus embodiment.

The user equipment acquires configuration information, wherein the configuration information contains DCI types received in the same DCI format. Optionally, the configuration information may be obtained by receiving a configuration message of the network side device, or may be determined directly by reading a memory or a storage unit in the user equipment. The type of the DCI comprises first type DCI and second type DCI, wherein the first type DCI indicates control information of a Physical Downlink Shared Channel (PDSCH), the PDSCH indicated by the first type DCI is transmitted on a first type time unit, and the first type time unit comprises a synchronization signal block (SS block). The second DCI indicates control information of the PDSCH, the PDSCH indicated by the second DCI is sent on a second time unit, and the second time unit does not contain SS block.

In an embodiment, the DCI type received by the ue in the same downlink control information format DCI format may receive two configurations for a time unit, where the configuration for the time unit may be a subframe configuration, for example, a first type subframe and a second type subframe are configured, where the first type subframe is associated with the first type DCI, and the second type subframe is associated with the second type DCI.

And the user equipment receives DCI according to the configuration information, and determines the first type of DCI or the second type of DCI according to the DCI.

It should be understood that this embodiment may also be combined with the above embodiments, for example, before the UE receives the downlink control information sent by the network side device. Or when the PDSCH is transmitted on a first type of time unit, the SS block and the PDSCH are transmitted on at least one same symbol,

or the first control information may be configured to include at least one of the following information:

the PDSCH comprises a starting symbol of the PDSCH, an ending symbol of the PDSCH and indication information used for indicating whether time-frequency resources of the PDSCH contain preset time-frequency resources of SS block or not;

or configuring the network equipment to send a data demodulation reference signal (DMRS) to the user equipment on a predetermined time-frequency resource position;

wherein the DMRS is a reference signal for demodulating the PDSCH.

Or the second control information may be configured to include configuration information of the DMRS, where the configuration information includes at least one of position information of the DMRS and information on the number of the DMRS;

wherein the DMRS is a reference signal for demodulating the PDSCH.

Or the location information of the DMRS may be configured as: an identity of a symbol, or a bitmap, in which the DMRS is located;

the bit map comprises at least one bit, the bit map corresponds to the candidate time-frequency resource position of the DMRS, and part or all of the candidate time-frequency resource position of the DMRS is used for bearing the resource position of the DMRS.

In another embodiment, the network side device obtains configuration information, where the configuration information includes DCI types received in the same downlink control information format DCI format. Optionally, the configuration information may be obtained by receiving a configuration message of another network element, or may be determined directly by reading a memory or a storage unit in the network device. The type of the DCI comprises first type DCI and second type DCI, wherein the first type DCI indicates control information of a Physical Downlink Shared Channel (PDSCH), the PDSCH indicated by the first type DCI is transmitted on a first type time unit, and the first type time unit comprises a synchronization signal block (SS block). The second DCI indicates control information of the PDSCH, the PDSCH indicated by the second DCI is sent on a second time unit, and the second time unit does not contain SS block.

In an embodiment, the network device may acquire two time unit configurations, where the DCI types sent in the same DCI format include the acquisition configuration information, and the time unit configuration may be a subframe configuration, for example, a first type subframe and a second type subframe are configured, where the first type subframe is associated with the first type DCI, and the second type subframe is associated with the second type DCI.

It should be understood that this embodiment may also be combined with the above embodiments, for example, before the ue receives the downlink control information sent by the network side device.

Or the configuration may be that when the PDSCH is transmitted on a first type time unit, the SS block and the PDSCH are transmitted on at least one same symbol.

the starting symbol of the PDSCH, the ending symbol of the PDSCH and indication information used for indicating whether the time frequency resources of the PDSCH contain preset time frequency resources of the SS block.

Or configuring the user equipment to receive a data demodulation reference signal (DMRS) sent by the network equipment at a predetermined time-frequency resource position;

wherein the DMRS is a reference signal for demodulating the PDSCH.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, 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 be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. 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 invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be essentially or partially contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A data transmission method, comprising:

the network equipment sends first Downlink Control Information (DCI) to user equipment, wherein the first DCI is control information indicating a Physical Downlink Shared Channel (PDSCH), the PDSCH indicated by the first DCI is sent on a first type time unit, and the first type time unit comprises a synchronization signal block (SS block);

the network equipment sends second DCI to user equipment, wherein the second DCI is control information indicating a PDSCH, the PDSCH indicated by the second DCI is sent on a second type time unit, and the second type time unit does not contain SS block;

the first DCI and the second DCI have the same downlink control information format (DCI format);

2. The method of claim 1,

when the PDSCH is transmitted on a first type of time unit, the SS block and the PDSCH are transmitted on at least one same symbol.

3. The method according to claim 1 or 2, wherein the first control information comprises at least one of the following information:

4. The method of claim 3, further comprising:

the network equipment transmits a data demodulation reference signal (DMRS) to the user equipment at a preset time-frequency resource position;

wherein the DMRS is a reference signal for demodulating the PDSCH.

5. The method of claim 1, wherein the second control information contains configuration information of the DMRS, the configuration information including at least one of position information of the DMRS and number information of the DMRS;

wherein the DMRS is a reference signal for demodulating the PDSCH.

6. The method of claim 5,

the position information of the DMRS is as follows: an identity of a symbol, or a bitmap, in which the DMRS is located;

7. A data transmission method, comprising:

user equipment receives first Downlink Control Information (DCI) sent by network equipment, wherein the first DCI is control information indicating a Physical Downlink Shared Channel (PDSCH), the PDSCH indicated by the first DCI is sent on a first type time unit, and the first type time unit comprises a synchronization signal block (SS block);

the user equipment receives second DCI sent by the network equipment, wherein the second DCI is control information used for indicating a PDSCH, the PDSCH indicated by the second DCI is sent on a second type time unit, and the second type time unit does not contain SS block;

the user equipment receives a PDSCH according to the first DCI;

the user equipment receives the PDSCH according to the second DCI;

8. The method of claim 7,

9. The method according to claim 7 or 8, wherein the first control information comprises at least one of the following information:

10. The method of claim 9, further comprising:

the user equipment receives a data demodulation reference signal (DMRS) sent by the network equipment at a preset time-frequency resource position;

wherein the DMRS is a reference signal for demodulating the PDSCH.

11. The method of claim 7, wherein the second control information contains configuration information of the DMRS, and wherein the configuration information includes at least one of position information of the DMRS and number information of the DMRS;

wherein the DMRS is a reference signal for demodulating the PDSCH.

12. The method of claim 10,

13. A network device, comprising:

a sending unit, configured to send first downlink control information DCI to user equipment, where the first DCI is control information indicating a physical downlink shared channel PDSCH, the PDSCH indicated by the first DCI is sent in a first class time unit, and the first class time unit includes a synchronization signal block SS block;

the sending unit is further configured to send a second DCI to the user equipment, where the second DCI is control information indicating a PDSCH, the PDSCH indicated by the second DCI is sent on a second type time unit, and the second type time unit does not include an SS block;

14. The network device of claim 13,

15. The network device of claim 13 or 14, wherein the first control information comprises at least one of the following information:

16. The network device of claim 15,

the sending unit is further configured to send a data demodulation reference signal DMRS to the user equipment at a predetermined time-frequency resource location;

wherein the DMRS is a reference signal for demodulating the PDSCH.

17. The network device of claim 13, wherein the second control information contains configuration information for the DMRS, the configuration information including at least one of location information for the DMRS and number information for the DMRS;

wherein the DMRS is a reference signal for demodulating the PDSCH.

18. The network device of claim 17,

19. A user device, comprising:

the receiving unit is further configured to receive a second DCI sent by the network device, where the second DCI is control information indicating a PDSCH, the PDSCH indicated by the second DCI is sent on a second type of time unit, and the second type of time unit does not include an SS block;

an obtaining unit, configured to receive a PDSCH according to the first DCI;

the obtaining unit is further configured to receive the PDSCH according to the second DCI;

20. The user equipment of claim 19,

21. The UE of claim 19 or 20, wherein the first control information comprises at least one of the following information:

22. The user equipment of claim 21,

the receiving unit is further configured to receive a data demodulation reference signal DMRS sent by the network device at a predetermined time-frequency resource location;

wherein the DMRS is a reference signal for demodulating the PDSCH.

23. The user equipment of claim 19, wherein the second control information contains configuration information for the DMRS, the configuration information including at least one of position information for the DMRS and number information for the DMRS;

wherein the DMRS is a reference signal for demodulating the PDSCH.

24. The user equipment of claim 23,

25. A communication device, comprising: at least one processor, and a memory; it is characterized in that the preparation method is characterized in that,

the memory is configured to store a computer program such that the computer program when executed by the at least one processor implements the data transmission method of any one of claims 1-6.

26. A computer storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the data transmission method according to any one of claims 1 to 6.

27. A communication device, comprising: at least one processor, and a memory; it is characterized in that the preparation method is characterized in that,

the memory is configured to store a computer program such that the computer program when executed by the at least one processor implements the data transmission method according to any one of claims 7-12.

28. A computer storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the data transmission method according to any one of claims 7-12.