WO2018094652A1

WO2018094652A1 - Data transmission method and device

Info

Publication number: WO2018094652A1
Application number: PCT/CN2016/107120
Authority: WO
Inventors: 胡磊; 李振宇; 李汉涛
Original assignee: 华为技术有限公司
Priority date: 2016-11-24
Filing date: 2016-11-24
Publication date: 2018-05-31

Abstract

A data transmission method and device, the method being: determining a system radio frame number corresponding to a channel occupation section on a license-free spectrum and an uplink and downlink subframe ratio of the channel occupation section; according to the system radio frame number corresponding to the channel occupation section on the license-free spectrum and the uplink and downlink subframe ratio of the channel occupation section, determining a sending time of a scheduling request in the channel occupation section, which may ensure that a sending time position point of a scheduling request which is determined in an application scenario of the license-free spectrum falls exactly within a channel occupation time window which may be used by an uplink channel, thus increasing transmission efficiency of uplink data.

Description

Data transmission method and device

Technical field

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

Background technique

Currently, unlicensed (also known as unlicensed) spectrum resources are larger than licensed (also known as authorized) spectrum resources. Therefore, long term evolution (LTE) User Equipment (UE) applications are applied. In the license-free spectrum, not only can the use of unlicensed spectrum resources be effectively utilized, but also more efficient wireless access can be provided to meet the needs of the growing mobile broadband services. For example, the Licensed-Assisted Access Using Long Term Evolution (LAA-LTE) system can not only effectively utilize the unlicensed spectrum, but also provide more efficient wireless access to meet the growing demand for mobile broadband services. .

When LTE systems use unlicensed spectrum resources, they need to comply with the specifications of the license-free spectrum usage system.

Listening to Talk (LBT) is a coexistence strategy between systems. The characteristics of LBT are: Before each communication device sends a signal on a certain channel, it needs to detect whether the current channel is idle. If so, the communication device can send Signal, if not, the communication device is currently unable to transmit signals, therefore, based on the LBT rule, the data transmission of the LTE device in the license-free spectrum is opportunistic. After the opportunistic occupation of the unlicensed spectrum, the specific service data direction of the corresponding radio subframe in the channel occupation time window is flexible, that is, the downlink subframe that can serve the downlink transmission or the uplink subframe of the uplink transmission service. frame.

In order to perform uplink data transmission, the user equipment needs to first report a scheduling request (SR) to the base station, and the base station performs uplink authorization on the user equipment based on the received SR information, and the user equipment can perform uplink data transmission after receiving the authorization information. Therefore, the user equipment finds the SR time position that can be aligned with the base station as soon as possible, and reports the SR is a prerequisite for ensuring uplink data transmission efficiency between the base station and the user equipment.

Since the channel usage in the unlicensed spectrum is opportunistic, in the channel occupation time window available for the uplink channel, it is difficult to ensure that the time position of the existing periodic SR falls, and the uplink data cannot be transmitted, which seriously affects Uplink data transmission efficiency between the base station and the user equipment.

Summary of the invention

The embodiment of the present invention provides a data transmission method and apparatus, which are used to solve the problem that the location time of the periodic SR that is not in the unlicensed spectrum usage scenario is difficult to accurately fall into the available channel occupation time window of the uplink channel, resulting in failure to transmit. Uplink data affects the efficiency of uplink data transmission.

In a first aspect, a method of data transmission is provided, comprising:

Determining a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum and an uplink-downlink subframe ratio of the channel occupation interval;

And determining, according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval, a transmission time of the scheduling request in the channel occupation interval.

In this way, the position of the transmission time of the scheduling request determined in the unlicensed spectrum usage scenario can be accurately dropped into the available channel occupation time window of the uplink channel, the reporting probability of the scheduling request is increased, the uplink data transmission efficiency is improved, and the uplink capacity of the system is improved. .

In a possible design, the system radio frame number corresponding to the channel occupation interval on the unlicensed spectrum and the uplink-downlink subframe ratio of the channel occupation interval, including:

Determining a start time of the channel occupation interval;

Determining, in the system radio frame, a radio frame number of the radio frame into which the start time falls, as a system radio frame number corresponding to the channel occupation interval;

Determining a subframe boundary, a subframe number, and a number of subframes of the channel occupation interval, where a subframe boundary of the channel occupation interval is aligned with a subframe boundary of the system radio frame;

Determining an uplink-downlink subframe ratio of the channel occupation interval based on the number of subframes in the channel occupation interval and the uplink and downlink transmission time of the channel occupation interval, where uplink and downlink transmission time of the channel occupation interval is that the network side is in the channel Pre-configured when occupied.

In a possible design, determining, according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval, determining a transmission time of the scheduling request in the channel occupation interval, including:

Determining an uplink subframe of the channel occupation interval according to an uplink and downlink subframe ratio of the channel occupation interval;

And determining, according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval, an uplink subframe in which the scheduling request is sent in the channel occupation interval.

In this design, it is ensured that the transmission timing of the scheduling request in the channel occupation interval falls in the uplink transmission portion, thereby improving data transmission efficiency and success rate.

In a possible design, determining, according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval, determining an uplink subroutine where the scheduling request is sent in the channel occupation interval Frames, including:

Determining, in the uplink subframe where the reporting time of the scheduling request in the radio frame corresponding to the radio frame number is located, the subframe that is not in the uplink subframe of the channel occupation interval;

The uplink subframe in the channel occupation interval is determined as a subframe in which the reporting time of the scheduling request in the channel occupation interval is located.

In this design, when the reporting time of the scheduling request in the radio frame corresponding to the system radio frame number cannot correspond to the uplink transmission part of the channel occupation interval, the reporting time of the scheduling request in the channel occupation interval is re-determined, and the scheduling request is avoided. Unable to report, seriously affecting the efficiency of data transmission.

In a possible design, the method further includes:

When the subframe in which the reporting time of the scheduling request in the radio frame corresponding to the system radio frame number is located can correspond to the uplink subframe of the channel occupation interval, the scheduling in the radio frame corresponding to the system radio frame number is maintained. The request for reporting is unchanged at the same time.

In a second aspect, an apparatus for data transmission is provided, including:

a first determining unit, configured to determine a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum and an uplink and downlink subframe ratio of the channel occupation interval;

And a second determining unit, configured to determine, according to the system radio frame number corresponding to the channel occupation interval and the uplink and downlink subframe ratio of the channel occupation interval, a sending moment of the scheduling request in the channel occupation interval.

In a possible design, the first determining unit is specifically configured to:

Determining a start time of the channel occupation interval;

In a possible design, the second determining unit is specifically configured to:

In a possible design, the second determining unit is further configured to:

In a third aspect, a data transmission method is provided, including:

The reporting time of the scheduling request corresponding to the channel occupation interval of the base station is configured;

The base station sends the configured reporting time of the scheduling request corresponding to the channel occupation interval to the user equipment.

In this design, the base station pre-configures the reporting time of the corresponding scheduling request in the channel occupation interval, and causes the reporting time of the scheduling request to fall into the uplink transmission part of the channel occupation interval with a large probability, thereby improving the data transmission success rate and efficiency. Increase system uplink capacity.

In a possible design, determining a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum, including:

Determining a start time of the channel occupation interval, and determining, in a system radio frame, a radio frame that falls in the start time as a system radio frame number corresponding to the channel occupation interval.

In a fourth aspect, a data transmission apparatus is provided, including:

a processing unit, configured to configure a reporting time of the scheduling request corresponding to the channel occupation interval;

And a sending unit, configured to send, to the user equipment, a reporting time of the scheduled scheduling request corresponding to the channel occupation interval.

In a fifth aspect, an apparatus is provided, the apparatus comprising a processor, a memory, a transmitter, and a receiver, wherein the memory stores a computer readable program, and the processor controls by running a program in the memory The transmitter and receiver implement the data transmission method involved in the first aspect.

In a sixth aspect, an apparatus is provided, the apparatus comprising a processor, a memory and a receiver, wherein the memory stores a computer readable program, and the processor controls the receiving by running a program in the memory The method of implementing the data related to the third aspect of the tea.

In a seventh aspect, a computer storage medium is provided for storing computer software instructions for use with the controller of the first aspect described above, comprising a program designed to perform the method of control implementation described above.

In an eighth aspect, the present application provides a computer storage medium for storing computer software instructions used by the base station in the foregoing third aspect, including a method for performing the foregoing implementation by a base station The program designed.

DRAWINGS

FIG. 1 is a flowchart of a data transmission method according to an embodiment of the present invention;

2 is a schematic diagram of a process of determining a system radio frame number corresponding to a channel occupation interval according to an embodiment of the present invention;

3 and FIG. 4 are schematic diagrams of adjusting a new SR reporting position according to an embodiment of the present invention;

FIG. 5 is a flowchart of a method for updating a reporting time of a scheduling request according to an embodiment of the present invention;

6 is a schematic structural diagram of a frame structure and a subframe structure of a channel occupied interval according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment of the present invention provides a data transmission method and apparatus, which are used to solve the problem that the location time of the periodic SR that is not in the unlicensed spectrum usage scenario is difficult to accurately fall into the available channel occupation time window of the uplink channel, resulting in failure to transmit. The uplink data affects the efficiency of the uplink data transmission. The solution provided by the embodiment of the present invention can increase the success rate of the scheduling request on the unlicensed spectrum under the premise of ensuring good coexistence between the systems, thereby improving the relationship between the base station and the user equipment. The efficiency of uplink data transmission increases the uplink capacity of the system.

The solution provided by the embodiment of the present invention is applied to a wireless communication system, and is particularly applicable to a licensed spectrum. The LTE system that assists access is a LAA-LTE (licensed-assisted access-LTE) system. The LTE system that permits spectrum-assisted access refers to an LTE system that uses licensed spectrum and unlicensed spectrum together by CA or non-CA. Specific: The mainstream deployment scenario is a scenario in which the licensed spectrum and the unlicensed spectrum are jointly used by the CA, that is, the licensed spectrum, or the carrier included in the licensed spectrum, or the cell operating on the licensed spectrum as the primary serving cell, and the license-free spectrum, The carrier included in the unlicensed spectrum or the cell operating on the unlicensed spectrum serves as the secondary serving cell. The primary serving cell and the secondary serving cell may be deployed in a common station or in a non-common station, and there is an ideal or non-ideal backhaul path between the two serving cells.

However, the embodiment of the present invention is not limited to the scenario of the foregoing CA. Other deployment scenarios include a stand-alone spectrum (standalone) scenario, that is, a scenario where the license-free operation is performed as an independent carrier, and the serving cell on the license-free spectrum is directly An independent access function can be provided without the assistance of a cell operating on the licensed spectrum.

In the embodiment of the present invention, the LTE/LTE-A system is taken as an example, but the present invention is not limited to the LTE system, and is also applicable to the WiFi, that is, the global interoperability for microwave access (WiMAX). Wideband code division multiple access (WCDMA), time division-synchronous code division multiple access (TD-SCDMA), global system for mobile communication (GSM) , Zigbee (Zigbee Protocol), Bluetooth and other wireless communication systems.

In the embodiment of the present invention, whether the licensed spectrum or the unlicensed spectrum may include one or more carriers, the licensed spectrum and the unlicensed spectrum are subjected to carrier aggregation, and may include one or more carriers included in the licensed spectrum and the unlicensed spectrum. Carrier aggregation is performed on one or more carriers included.

The network element involved in the embodiment of the present invention mainly includes a base station (or an access point) and a user equipment working on the unlicensed spectrum. The cell in the embodiment of the present invention may be a cell corresponding to the base station, and the cell may belong to the macro base station, or may belong to the base station corresponding to the small cell, where the small cell may include: a metro cell, Micro cell, pico cell, femto cell, etc., these small cells have small coverage and transmit power Low feature, suitable for providing high-speed data transmission services. In the embodiment of the present invention, the concept of the carrier and the cell in the LTE system is the same. For example, the UE accesses one carrier and accesses one cell, which is equivalent to the concept of the cell in the embodiment of the present invention.

In the embodiment of the present invention, the communication device capable of performing data communication with the base station can be regarded as a user equipment, such as a terminal, a relay, etc., and is described in a general sense by the UE in the embodiment of the present invention. Similar to this, it is not listed here.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A data transmission method provided by an embodiment of the present invention is shown in FIG. 1 , and the method includes:

Step 11: The first device determines a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum and an uplink-downlink subframe ratio of the channel occupation interval.

In an implementation, the first device may be a base station or a user equipment.

Specifically, determining the system radio frame number corresponding to the channel occupation interval on the unlicensed spectrum and the uplink-downlink subframe ratio of the channel occupation interval may be implemented by the following process:

S111: Determine a start time of the channel occupation interval.

S112: Determine, in the system radio frame, a radio frame number of the radio frame into which the start time falls, as a system radio frame number corresponding to the channel occupation interval.

S113: Determine a subframe boundary, a subframe number, and a number of subframes of the channel occupation interval, where a subframe boundary of the channel occupation interval is aligned with a subframe boundary of the system radio frame.

S114: Determine, according to the number of subframes in the channel occupation interval and the uplink and downlink transmission time of the channel occupation interval, the uplink and downlink subframe ratio of the channel occupation interval, where the uplink and downlink transmission time of the channel occupation interval is the network side Pre-configured when the channel is occupied.

Through the foregoing process, the subframe structure can be divided for the channel occupation time on the unlicensed spectrum. Since the subframe boundary of the channel occupation interval is aligned with the subframe boundary of the system radio frame, the first subframe of the channel occupation interval is That is, the subframe boundary of the subframe #0 whose subframe number is 0 is incomplete, and the subsequent subframe length of the channel occupation interval is the same as the subframe length of the system radio frame until the end of the channel occupation interval.

Step 12: Determine a transmission time of the scheduling request in the channel occupation interval according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval.

Specifically, when determining the sending time of the scheduling request in the channel occupation interval according to the system radio frame number corresponding to the channel occupation interval and the uplink and downlink subframe ratio of the channel occupation interval, the following process may be implemented:

S121: Determine an uplink subframe of the channel occupation interval according to an uplink and downlink subframe ratio of the channel occupation interval.

S122: Determine an uplink subframe in which the scheduling request is sent in the channel occupation interval according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval.

Optionally, before the step 12 is performed, that is, according to the system radio frame number corresponding to the channel occupation interval and the uplink and downlink subframe ratio of the channel occupation interval, before the sending time of the scheduling request in the channel occupation interval is determined, It is further required to: determine that the subframe in which the reporting time of the scheduling request in the radio frame corresponding to the radio frame number is located cannot correspond to the uplink subframe of the channel occupation interval.

Further, if it is determined that the subframe in which the scheduling request of the scheduling request in the radio frame corresponding to the system radio frame number is located can correspond to the uplink subframe of the channel occupation interval, the wireless corresponding to the system radio frame number is maintained. The reporting time of the scheduling request in the frame does not change.

For example, for the base station of the LAA system, performing CCA on the unlicensed spectrum, detecting that the channel on the unlicensed spectrum is idle, and occupying the channel, first determining the system radio frame number corresponding to the occupied area of the channel, as shown in FIG. 2 Shown.

Since the start time of the channel occupation interval (burst) is not more than the backward offset of 10 ms from the nearest wireless subframe #0 before the start time, since the length of the radio frame is 10 ms, the start time falls. The radio frame is the system radio frame number corresponding to the channel occupation interval. In FIG. 2, the system radio frame number corresponding to the channel occupation interval is the radio frame N-1.

Further, the channel occupation interval is aligned according to the subframe boundary of the system radio frame, and the subframes of the channel occupation interval are numbered from the small frame to the large frame to obtain the subframe structure of the channel occupation interval. , that is, the incomplete subframe before the first subframe boundary is encoded as subframe #0, The subsequent occupation time is divided by the number from the sub-frame #1 of the alignment system wireless sub-frame boundary until the current channel occupies the burst tail. And determining, according to the subframe structure of the channel occupation interval and the uplink and downlink transmission time of the channel occupation interval, determining an uplink and downlink subframe ratio of the channel occupation interval.

According to the system radio frame number corresponding to the channel occupation interval, all the opportunity moments in which the SR needs to be reported in the radio frame are obtained, and the minimum subframe number is obtained from all the obtained SR reporting times, which is defined as the SR initial report message in the radio frame. The frame is obtained by using a subframe that belongs to the same radio frame before the earliest reported subframe as a starting subframe for calculating an offset position.

The obtained SR reporting time points are sequentially numbered in order of the relative starting point subframe time.

At the same time, according to the obtained time points reported by the SR in the radio frame, the number of the largest uplink subframes required is obtained, and the number of uplink subframes to be used in the current channel occupation interval is adjusted by using the number information. a number, thereby updating the reporting time of the scheduling request in the radio frame in the channel occupation interval

It should be noted that, in the channel occupation interval, the base station initially informs the uplink and downlink subframe configuration in the current channel occupation interval of the user equipment by using the downlink transmission, so that the base station and the user equipment can report the time points according to the determined SRs. The number is associated with the location of the uplink subframe in the channel occupation interval, and the new SR reporting position in the channel occupation interval is obtained, and the user equipment reports the SR at the new location.

As shown in FIG. 3, TDD-LTE is adopted, and subframe configuration 1 is adopted. The reporting position of four SRs in the radio frame N where the channel occupancy interval starts is updated, and the uplink occupies 4 subframes, and the subframe is taken. 1 is the starting subframe, and the four uplink subframes #2, #3, #7, and #8 are sequentially numbered as position 1, position 2, position 3, and position 4, and the relationship in the positive order is used in the channel occupation burst. Position 1 is on subframe #6 of the channel occupation burst, position 2 is on subframe #7 of the channel occupation burst, position 3 is on subframe #8 of the channel occupation burst, and position 4 is on the subframe occupying burst of the channel # 9 on.

Further, depending on some factors, the uplink occupied portion of the channel occupation interval is limited. For example, in the case of a maximum of one uplink subframe, the reporting location resource concentration of each SR can be adjusted to one uplink subframe. Above, as shown in Figure 4.

The embodiment of the invention further provides a data transmission method, as shown in FIG. 5, the method includes:

Step 51: The base station determines a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum.

Step 52: The base station configures the reporting time of the scheduling request corresponding to the channel occupation interval, and sends the configured reporting time of the scheduling request corresponding to the channel occupation interval to the user equipment.

Step 53: The user equipment updates the reporting time of the scheduling request in the system radio frame number corresponding to the channel occupation interval to the reporting time of the scheduling request corresponding to the configured channel occupation interval.

Specifically, when determining, by the base station, a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum, determining a start time of the channel occupation interval, determining, in the system radio frame, the radio frame falling in the start time as The system radio frame number corresponding to the channel occupation interval.

Specifically, before the base station configures the reporting time of the scheduling request corresponding to the channel occupation interval, the frame structure and the subframe structure need to be designed for the channel occupied interval. As shown in FIG. 6 , the channel occupied burst reference system frame mode is independently numbered. The first occupation starts, numbered as burst frame #0, followed by burst frame #1, ..., burst frame #N, 1024 is its frame period. The channel occupying the burst frame number and the subframe number in the burst are used as the time domain input of the SR calculation, and a relatively periodic SR reporting time configuration is established on the burst.

Specifically, the reporting time of the scheduling request corresponding to the channel occupation interval configured by the base station may be sent by the user when the user accesses, or the user equipment is notified by the downlink part when each channel is occupied, and the SR position of the base station and the user equipment is aligned. The delivery mode includes but is not limited to RRC signaling, MAC signaling, and DCI indication.

Optionally, before the step 53 is performed, the reporting time of the scheduling request in the system radio frame number corresponding to the channel occupation interval is updated to the reporting time of the scheduling request corresponding to the channel occupation interval, and the execution time needs to be performed. And determining that the reporting time of the scheduling request in the system radio frame number corresponding to the channel occupation interval cannot correspond to the uplink transmission part of the channel occupation interval.

Further, if it is determined that the reporting time of the scheduling request in the system radio frame number corresponding to the channel occupation interval can correspond to the uplink transmission part of the channel occupation interval, the system radio frame number corresponding to the channel occupation interval is maintained. The reporting time of the scheduling request does not change.

Optionally, if the user equipment has uplink data to be sent, but the SR exceeds the threshold and the opportunity is not reported, the user equipment side actively performs a short CCA at the latest reporting opportunity to try Report the opportunity to the channel and report the SR.

Based on the same concept, FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention, which is used to execute the data transmission method flow shown in FIG. 1 . As shown in FIG. 7 , the data transmission apparatus 700 includes:

a first determining unit 701, configured to determine a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum and an uplink and downlink subframe ratio of the channel occupation interval;

The second determining unit 702 is configured to determine, according to the system radio frame number corresponding to the channel occupation interval and the uplink and downlink subframe ratio of the channel occupation interval, a transmission time of the scheduling request in the channel occupation interval.

Optionally, the first determining unit 701 is specifically configured to:

Determining a start time of the channel occupation interval;

Optionally, the second determining unit 702 is specifically configured to:

Optionally, the second determining unit 702 is further configured to:

It should be understood that the division of each unit in the above data transmission device 700 is only a division of a logical function, and may be integrated into one physical entity in whole or in part, or may be physically separated. For example, each of the above units may be a separately set processing element, or may be integrated in a chip of a base station or a terminal, or may be stored in a storage code of a base station or a terminal in the form of program code, by a base station or a terminal. One of the processing elements invokes and performs the functions of each of the above units. In addition, the individual units can be integrated or implemented independently. The processing elements described herein can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software. The processing element may be a general-purpose processor, such as a central processing unit (CPU), or may be one or more integrated circuits configured to implement the above method, for example, one or more specific integrated circuits (Application Specific) Integrated Circuit (ASIC), or one or more digital singal processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

It should be noted that the function implementation and the interaction mode of the various units of the apparatus 700 in the embodiment of the present invention may be further referred to the description of the related method embodiments, and details are not described herein again.

Based on the same concept, FIG. 8 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention, which is used to execute the data transmission method process shown in FIG. 1 . As shown in FIG. 8 , the device 800 includes: a processor. 801, memory 802, transmitter 803, receiver 804, program code for carrying out the inventive solution is stored in memory 802, and is controlled by processor 801 for execution.

The program stored in the memory 802 is used by the instruction processor 801 to perform a data transmission method, including: Determining a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum and an uplink-downlink subframe ratio of the channel occupation interval; and determining, according to the system radio frame number corresponding to the channel occupation interval, an uplink and downlink of the channel occupation interval The subframe ratio determines the transmission timing of the scheduling request in the channel occupation interval.

Optionally, the processor 801 is specifically configured to:

Determining a start time of the channel occupation interval;

Optionally, the processor 801 is specifically configured to:

Optionally, the processor 801 is further configured to: when the subframe where the reporting time of the scheduling request in the radio frame corresponding to the system radio frame number is located can be corresponding to the uplink subframe of the channel occupation interval, The reporting time of the scheduling request in the radio frame corresponding to the system radio frame number does not change.

It can be understood that the device 800 of this embodiment can be used to implement the foregoing method embodiments. For the specific implementation of the second base station, refer to the description of the method for performing the second base station in the foregoing method embodiment, and details are not described herein again.

It is to be understood that the processor involved in the foregoing apparatus 800 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more. An integrated circuit for controlling the execution of the program of the present invention. One or more memories included in the computer system, which may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM) or Other types of dynamic storage devices that store information and instructions may also be disk storage. These memories are connected to the processor via a bus.

The receiver and transmitter can perform their functions through a transceiver, which can be a physical module capable of transceiving functions to communicate with other devices or communication networks.

A memory, such as a RAM, holds an operating system and a program for executing the inventive scheme. The operating system is a program that controls the running of other programs and manages system resources.

These memories, transmitters and receivers can be connected to the processor via a bus or can also be connected to the processor via dedicated connection lines.

By programming the processor, the code corresponding to the method shown below is solidified into the chip, so that the chip can perform the method shown in FIG. 1 while it is running. How to design and program the processor is a technique well known to those skilled in the art, and details are not described herein.

Based on the same concept, FIG. 9 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention, for performing the execution flow of a base station in the data transmission method shown in FIG. 5, as shown in FIG. Apparatus 900 includes:

The processing unit 901 is configured to configure a reporting time of the scheduling request corresponding to the channel occupation interval,

The sending unit 902 is configured to send the reporting time of the scheduled scheduling request corresponding to the channel occupation interval to the user equipment.

Based on the same inventive concept, the embodiment of the present invention further provides a network device 1000, which is used to perform the execution process of the base station in the foregoing data transmission method embodiment of FIG. 5, as shown in FIG. The device 1000 includes a processor 1001, a memory 1002, a receiver 1004, and a transmitter 1003. The program code for executing the solution of the present invention is stored in the memory 1002 for instructing the processor 1001 to cooperate with the receiver 1004 and the transmitter 1003. The data transmission method shown in 5.

It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be performed by a program, and the program may be stored in a computer readable storage medium, which is non-transitory ( English: non-transitory) media, such as random access memory, read-only memory, flash memory, hard disk, solid state disk, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), CD (English: optical disc) And any combination thereof.

The present invention has been described with reference to the respective flowcharts and block diagrams of the method and apparatus of the embodiments of the invention. It will be understood that each flow and block of the flowchart illustrations. FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. A device that implements the functions specified in one or more blocks of a flowchart or a plurality of flows and block diagrams.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A method for data transmission, comprising:

Determining a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum and an uplink-downlink subframe ratio of the channel occupation interval;

And determining, according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval, a transmission time of the scheduling request in the channel occupation interval.
The method according to claim 1, wherein the determining the system radio frame number corresponding to the channel occupation interval on the unlicensed spectrum and the uplink-downlink subframe ratio of the channel occupation interval comprises:

Determining a start time of the channel occupation interval;

Determining, in the system radio frame, a radio frame number of the radio frame into which the start time falls, as a system radio frame number corresponding to the channel occupation interval;

Determining a subframe boundary, a subframe number, and a number of subframes of the channel occupation interval, where a subframe boundary of the channel occupation interval is aligned with a subframe boundary of the system radio frame;

Determining an uplink-downlink subframe ratio of the channel occupation interval based on the number of subframes in the channel occupation interval and the uplink and downlink transmission time of the channel occupation interval, where uplink and downlink transmission time of the channel occupation interval is that the network side is in the channel Pre-configured when occupied.
The method according to claim 2, wherein determining the transmission of the scheduling request in the channel occupation interval according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval Moments, including:

Determining an uplink subframe of the channel occupation interval according to an uplink and downlink subframe ratio of the channel occupation interval;

And determining, according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval, an uplink subframe in which the scheduling request is sent in the channel occupation interval.
The method of claim 3, wherein the channel occupancy interval is corresponding to The system radio frame number and the uplink-downlink subframe ratio of the channel occupation interval, and determining an uplink subframe in which the scheduling request is sent in the channel occupation interval, including:

Determining, in the uplink subframe where the reporting time of the scheduling request in the radio frame corresponding to the radio frame number is located, the subframe that is not in the uplink subframe of the channel occupation interval;

The uplink subframe in the channel occupation interval is determined as a subframe in which the reporting time of the scheduling request in the channel occupation interval is located.
The method of claim 4, wherein the method further comprises:

When the subframe in which the reporting time of the scheduling request in the radio frame corresponding to the system radio frame number is located can correspond to the uplink subframe of the channel occupation interval, the scheduling in the radio frame corresponding to the system radio frame number is maintained. The request for reporting is unchanged at the same time.
A device for data transmission, comprising:

a first determining unit, configured to determine a system radio frame number corresponding to a channel occupation interval on the unlicensed spectrum and an uplink and downlink subframe ratio of the channel occupation interval;

And a second determining unit, configured to determine, according to the system radio frame number corresponding to the channel occupation interval and the uplink and downlink subframe ratio of the channel occupation interval, a sending moment of the scheduling request in the channel occupation interval.
The device according to claim 6, wherein the first determining unit is specifically configured to:

Determining a start time of the channel occupation interval;

Determining, in the system radio frame, a radio frame number of the radio frame into which the start time falls, as a system radio frame number corresponding to the channel occupation interval;

Determining a subframe boundary, a subframe number, and a number of subframes of the channel occupation interval, where a subframe boundary of the channel occupation interval is aligned with a subframe boundary of the system radio frame;

Determining an uplink-downlink subframe ratio of the channel occupation interval based on the number of subframes in the channel occupation interval and the uplink and downlink transmission time of the channel occupation interval, where uplink and downlink transmission time of the channel occupation interval is that the network side is in the channel Pre-configured when occupied.
The device according to claim 7, wherein the second determining unit is specifically configured to:

Determining the channel occupation interval according to the uplink-downlink subframe ratio of the channel occupation interval Row subframe

And determining, according to the system radio frame number corresponding to the channel occupation interval and the uplink-downlink subframe ratio of the channel occupation interval, an uplink subframe in which the scheduling request is sent in the channel occupation interval.
The apparatus according to claim 8, wherein the second determining unit is specifically configured to:

Determining, in the uplink subframe where the reporting time of the scheduling request in the radio frame corresponding to the radio frame number is located, the subframe that is not in the uplink subframe of the channel occupation interval;

The uplink subframe in the channel occupation interval is determined as a subframe in which the reporting time of the scheduling request in the channel occupation interval is located.
The device according to claim 9, wherein the second determining unit is further configured to:

When the subframe in which the reporting time of the scheduling request in the radio frame corresponding to the system radio frame number is located can correspond to the uplink subframe of the channel occupation interval, the scheduling in the radio frame corresponding to the system radio frame number is maintained. The request for reporting is unchanged at the same time.